CN112489405B

CN112489405B - Metering device and management system based on Internet of things and block chain

Info

Publication number: CN112489405B
Application number: CN202011309330.0A
Authority: CN
Inventors: 张化冰
Original assignee: XI'AN FLAG ELECTRONICS CO Ltd
Current assignee: XI'AN FLAG ELECTRONICS CO Ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-12-24
Anticipated expiration: 2040-11-20
Also published as: CN112489405A

Abstract

The invention belongs to the technical field of metering instruments, and particularly relates to a metering instrument and a management system based on the Internet of things and a block chain, which comprise a main body, wherein an upper cover is arranged above the main body; a sleeve is arranged in the main body; an upper cavity is arranged in the main body; an impeller is installed in the sleeve, and a rotating shaft of the impeller penetrates into the upper cavity; a bulge is arranged in the upper cavity body; a turntable is arranged in the bulge, and a first magnetic block is arranged at the edge of the turntable; a first mounting hole and a second mounting hole are formed in the side wall of the bulge; a first sensor is arranged in the first mounting hole; a second sensor and a second magnetic block are arranged in the second mounting hole; an electronic module is arranged in the upper cavity; the invention has simple structure, good sealing performance and anti-disassembly performance, and high accuracy of the measurement data, can ensure that the firmware of the measurement instrument is not distorted, monitors the state and integrity of the measurement instrument, and ensures that the data transmitted by the system using the technology of the Internet of things is not distorted.

Description

Metering device and management system based on Internet of things and block chain

Technical Field

The invention belongs to the technical field of metering instruments, and particularly relates to a metering instrument and a management system based on the Internet of things and a block chain.

Background

The existing intelligent water meter has two metering modes, one is mechanical, namely, an impeller is placed in a water flow channel, a gear mechanism is connected above the impeller, the gear mechanism displays corresponding numbers on a dial plate, and the numbers are water consumption. Another way is to perform the measurement by a sensor, that is, the measurement is realized by sensing the number of turns of a measuring sensing pointer by a magnetic measuring sensor, and the measuring sensing pointer has magnetic or magnetic conductivity. For the water meter which carries out measurement through the sensor, some lawless persons use a strong magnet to place on a shell of a water meter in order to steal water, and the interference magnetic sensor receives signals of the measurement sensor, so that the measurement of the water meter generates errors or stops measurement. Therefore, there is a need for an improved water meter that prevents the effects of electromagnetic interference on water metering and users from violently disassembling the water meter and tampering with the metering data.

The technical scheme includes that the device comprises a meter shell, a filter screen is fixed inside the meter shell, a base is fixed inside the filter screen, an impeller is arranged inside the base, a magnet is fixed at the upper end of the impeller, an outer cover is arranged above the impeller, a groove is formed in the bottom of the outer cover, the magnet at the upper end of the impeller extends into the groove, an inner cover made of copper is fixed inside the outer cover, a meter core is arranged inside the inner cover and comprises a mounting frame, a circuit board is fixed inside the mounting frame, a meter disc is fixed above the mounting frame, a gear shaft I is arranged at the bottom of the mounting frame, and the gear shaft I extends from the bottom of the mounting frame to the meter disc and is connected with a gear mechanism inside the meter disc; a magnetic steel I is fixed at the bottom end of the gear shaft I and can drive the gear shaft to rotate along with the magnet; a snap ring is arranged above the watch case, a transparent cover is arranged on the snap ring, and the water quantity is accurately measured; but the water gauge is dismantled inconveniently after sealing in this scheme, is difficult to go on when overhauing the water gauge, simultaneously, the water gauge easily receives external magnetic interference in the use.

Disclosure of Invention

In order to make up for the defects of the prior art, improve the disassembly resistance and the instrument sealing performance of the instrument and prevent water vapor permeation on the basis of ensuring the convenience in maintenance, the invention provides a metering instrument and a management system based on the Internet of things and a block chain.

The technical scheme adopted by the invention for solving the technical problems is as follows: the metering instrument based on the Internet of things and the block chain comprises a main body, wherein the main body is hollow; an upper cover is arranged above the main body; a sleeve is arranged in the main body; a blocking ring is arranged in the middle of the sleeve; the blocking ring is tightly attached to the inner wall of the main body, and sealing is kept between the blocking ring and the main body; a water inlet pipe is arranged on the left side of the main body; a water outlet pipe is arranged on the right side of the main body; the water inlet pipe is positioned below the blocking ring; the water outlet pipe is positioned above the blocking ring; a filter screen is arranged outside the sleeve; the filter screen is fixedly connected to the lower surface of the blocking ring; a gap is formed between the filter screen and the inner wall of the main body; a gap is formed between the filter screen and the outer wall of the sleeve; a flow guide hole is formed in the side wall of the sleeve along the tangential direction; the flow guide holes above and below the blocking ring are opposite in direction; an upper cavity is arranged in the main body; the upper end of the sleeve is fixedly connected to the bottom surface of the upper cavity through a screw; an impeller is arranged in the sleeve; the impeller is provided with a rotating shaft; the upper end of the rotating shaft is positioned in the upper cavity; a bulge is arranged on the inner bottom surface of the upper cavity; the inner part of the bulge is hollow; a rotary disc is rotatably arranged in the bulge; the rotating shaft is connected with the rotating disc through a spline; the edge of the rotary table is uniformly provided with a first magnetic block; the number of the first magnetic blocks is even; a first mounting hole and a second mounting hole are formed in the side wall of the bulge; the first mounting hole and the second mounting hole are positioned on the same straight line; the central line of the first mounting hole and the first magnetic block are positioned on the same horizontal plane; threads are arranged on the inner side surfaces of the first mounting hole and the second mounting hole; a first sensor is installed in the first installation hole through threads; the first sensor is a Hall sensor; a second sensor is installed in the second installation hole through threads; a second magnetic block is arranged in the second mounting hole in a sliding manner; the magnetic block II and the magnetic block I are opposite in like magnetic pole; a spring is arranged in the second mounting hole; the spring is positioned between the second magnetic block and the second sensor; the second sensor is a piezoelectric film sensor; an electronic module is arranged in the upper cavity; the electronic module comprises a power supply unit, an NB-IOT unit, a processor unit and a display unit; the display unit may display the related data on the upper cover; the first sensor and the second sensor are both electrically connected with a processor unit in the electronic module; the NB-IOT unit transmits data back to a management unit through the Internet of things for cost statistics, and simultaneously, the uploaded data are synchronously stored in a block chain network;

when the water-consumption meter works, a metering instrument is connected into a pipeline through a water inlet pipe and a water outlet pipe on a main body, after the water-consumption meter is used, the water in the pipeline flows into the main body, the water flows into the main body and pushes an impeller to rotate, the impeller rotates and drives a rotating shaft to rotate, the rotating shaft is connected with a rotating disc through a spline, the rotating disc rotates along with the rotating shaft after the rotating shaft rotates, meanwhile, a first magnetic block uniformly arranged on the rotating disc rotates along with the rotating disc, the first magnetic block is driven to act as a first sensor of a Hall sensor after rotating due to the fact that a first sensor is arranged on a protrusion, pulses are generated, then the generated pulses are transmitted to a processor unit and are calculated and processed, water consumption data are obtained, meanwhile, the first magnetic block rotates along with the rotating disc, the second magnetic block in a mounting hole is periodically subjected to repulsive force from the first magnetic block, and the second magnetic block periodically moves, the second sensor is extruded when the second magnetic block moves, and the second sensor is a piezoelectric film sensor, so that the second sensor generates pulses after being extruded by the second magnetic block, the generated pulses are transmitted to the processor unit and are calculated and processed to obtain water consumption data, meanwhile, after two groups of water consumption data are obtained, the processor unit compares the two groups of water consumption data to ensure that the water consumption data are accurate, if the two groups of water consumption data have deviation exceeding an error range, an overhaul signal is sent to a management unit through the Internet of things to remind a worker to overhaul, meanwhile, when part of users with lower quality intentionally place magnets on the water meter for low payment, when the normal work of the water meter is interfered, the two groups of water consumption data must have larger errors, and then the worker can be timely reminded to overhaul through the sent overhaul signal, the illegal operation of the user is prevented in time, the stealing and missing of the payment of the user are prevented, meanwhile, the upper cavity is arranged in the main body, the electronic part of the metering instrument can be separated from the mechanical part, the electronic part of the instrument is prevented from being out of order, the instrument needs to be completely disassembled when the maintenance is carried out, the operation difficulty is increased, meanwhile, the electronic part is separated from the mechanical part, the permeation of water vapor is effectively isolated, the drying of the working environment of the electronic part is ensured, the service life of the electronic part is prolonged, meanwhile, after the metering data are transmitted to a management unit through the internet of things by the metering instrument, the metering data are synchronously stored in a master right block chain network, when the management unit carries out water fee collection, the payment due amount is calculated according to the metering data which are stored and uploaded to the master right block chain network, and the payment amount is shared to a payment system for the user to inquire and pay fees, meanwhile, a user can log in a block chain network for storing metering data by himself to inquire the metering data by himself, meanwhile, the operation of uploading the metering data by the metering instrument through the NB-IOT unit is carried out at random intervals in a metering period, the uploaded metering data is marked as period intermediate data, the final metering data of the period is uploaded at the end of the metering period, the period intermediate data and the final metering data uploaded by the metering instrument are stored in the master block chain network according to the uploading time sequence, the metering data is prevented from being tampered and damaged through the block chain network, the metering expense is caused to be deviated, meanwhile, the period intermediate data are uploaded at random intervals in the metering period, the metering data can be effectively prevented from being tampered by individual users, the payment expense is avoided, unreasonable positions of the metering data at positions can be clearly searched, and the fact that the metering data are stolen and unreasonable positions are found in time, The users who do not pay fees are simultaneously provided with the periodic intermediate data at intervals of random time, so that the working time and the working frequency of the NB-IOT unit are reduced, the consumption of electric quantity in the power supply unit is reduced, the service time of the metering instrument after the power supply unit is replaced once is prolonged, and the use cost is reduced.

Preferably, an elastic membrane is arranged in the first mounting hole and the second mounting hole; the elastic membrane is tightly attached to the inner walls of the two mounting holes, and the two mounting holes are sealed; the elastic membrane is positioned between the second magnetic block and the second sensor; the second sensor is tightly attached to the surface of the second sensor; the spring is positioned between the elastic membrane and the second sensor; the diameter of an opening of the mounting hole in the hole cavity inside the bulge is smaller than that of the second magnetic block;

during operation, magnetic block two takes place to remove under the effect of magnetic block one, extrude the elastic membrane when magnetic block two removes, make the elastic membrane take place to warp, thereby extrude sensor two, make sensor two produce pulse signal, and simultaneously, through setting up the elastic membrane, keep apart sensor two and the interior space of arch, prevent that steam from corroding sensor two and steam from two infiltration of mounting hole and going into in the cavity, and simultaneously, when sensor two breaks down and needs to be changed, can guarantee that the liquid in the instrument does not flow out through the mounting hole, guarantee to keep apart between liquid and external environment, thereby under keeping the normal operating condition of instrument, maintain sensor two, change, remove the restriction that the instrument must dismantle the back could be maintained, reduce the maintenance degree of difficulty.

Preferably, the inner side surface of the main body is provided with threads; the outer side surface of the upper cavity is provided with threads; the upper cavity is fixedly connected in the main body through threads; a first through hole is formed in the side wall of the upper cavity; a first fixing groove is formed in the inner side surface of the main body; the first through hole corresponds to the first fixing groove; an electromagnet I is arranged in the upper cavity; an extension rod I of the electromagnet I can penetrate through the through hole I and be inserted into the fixing groove I; the first extension rod of the electromagnet keeps an extension state under a normal state; the first extension rod is made of plastic materials; a thin metal wire is arranged in the first extension rod; the fine metal wire is electrically connected with a processor unit in the electronic module; the upper end of the upper cavity is tightly attached to the lower surface of the upper cover; a second sealing ring is arranged between the main body and the upper cover; the inner side surface of the upper cavity is uniformly provided with a first clamping groove at the same height; the edge position of the upper cover is uniformly provided with a second clamping groove;

when the multifunctional instrument is in work, after the instrument is installed, the upper cavity is fixedly connected in the main body through threads, the electromagnet I is closed, the extension rod I keeps in an extension state and penetrates through the through hole I to be inserted into the fixing groove I to prevent the upper cavity and the main body from rotating, so that a part of users with low quality are prevented from forcibly opening the instrument to destroy or change instrument metering data, meanwhile, when the upper cavity is forcibly rotated by external force, the extension rod I is broken by shearing force between the upper cavity and the main body after being opened, so that thin metal wires in the extension rod I are broken, after the processor unit receives signals, an alarm signal is sent through the Internet of things to inform workers of processing, the users are prevented from illegally opening the instrument to modify the metering data and avoid payment, and meanwhile, when the multifunctional instrument needs to be overhauled, the workers send signals to the processor unit through the terminal, the utility model discloses a safety measurement instrument, including the measuring instrument, the instrument is provided with the main part, the processor unit control electro-magnet is opened, make first extension bar withdrawal, the locking between cavity and main part in the contact, and simultaneously, if the instrument breaks down, the first retraction of uncontrollable extension bar, because first extension bar is made for plastic materials, staff can twist off first extension bar by force, open the instrument and overhaul, prevent that the instrument from because unable opening overhauls, lead to the instrument directly to scrap, thereby reduce use cost, and simultaneously, when the staff opened the instrument, go into draw-in groove one and draw-in groove two through the specialized tool card, open the instrument in proper order, and simultaneously, can guarantee the security of measuring instrument firmware in the use of measuring instrument through thin wire, avoid the measuring instrument to receive the falsifying by illegal opening and the firmware in the measuring instrument.

Preferably, the upper end of the outer side surface of the upper cavity is provided with an annular groove; the lower surface of the upper cover is provided with an inner layer plate and an outer layer plate; the diameter of the inner layer plate is smaller than that of the outer layer plate; a gap is formed between the inner layer plate and the outer layer plate; the upper end of the upper cavity is inserted into a gap between the inner plate and the outer plate; the outer layer plate and an annular groove arranged at the upper end of the outer side surface of the upper cavity are mutually wedged; the outer diameter of the outer layer plate is the same as that of the upper cavity; the upper end of the inner side surface of the upper cavity is provided with threads; the outer side surface of the inner-layer plate is provided with threads; the inner plate is fixed on the inner side of the upper cavity through threads; the direction of the threads on the inner side surface of the upper cavity body is opposite to that of the threads on the outer side surface of the upper cavity body; a second through hole is formed in the inner layer plate; the second through hole penetrates through the outer layer plate; a second fixing groove is formed in the inner side wall of the main body; the second fixing groove corresponds to the second through hole; an electromagnet II is arranged in the upper cavity; an extension rod II of the electromagnet II can penetrate through the through hole II and be inserted into the fixing groove II; the second extension rod of the electromagnet keeps an extension state under a normal state; the second extension rod is made of plastic materials; a fine metal wire is arranged in the second extension rod; the fine metal wire is electrically connected with a processor unit in the electronic module; a first sealing ring is arranged between the outer layer plate and the upper cavity body;

when the electronic module works, the upper end of the upper cavity is inserted between the inner layer plate and the outer layer plate, the sealing performance inside the upper cavity is further enhanced, vapor is prevented from permeating into the upper cavity to influence the work of the electronic module, meanwhile, the threads arranged on the inner layer plate and the inner layer of the upper cavity fix the upper cover and the upper cavity mutually, the threads in the direction opposite to the inner side surface of the main body further improve the fixing effect, the user is prevented from violently disassembling during the use process and tampering metering data, meanwhile, the second extension rod of the electromagnet is inserted into the second fixing groove through the second extension rod, the upper cover, the upper cavity and the main body are relatively fixed, the disassembling difficulty is improved, meanwhile, when the instrument is violently disassembled, the second extension rod is broken, the thin metal wires in the second extension rod are broken, the processor unit receives signals and sends alarm signals through the Internet of things to inform a worker to process, avoid the illegal instrument of opening of user, modify metering data, avoid collecting fee, and the like, when needing to overhaul, the staff sends signals to the processor unit through the terminal, processor unit control electro-magnet two is opened, make two retractions of extension bar, the contact upper cover, go up the locking between cavity and main part, and simultaneously, because extension bar two is made by plastic materials, break down at the instrument, when leading to extension bar two can not retract, the staff accessible breaks the extension bar two by force and opens the instrument, overhaul the instrument, avoid because can't open the instrument, lead to the instrument directly to scrap, and simultaneously, can further promote the control of metering device to self integrality through the thin wire that sets up, guarantee the security of metering device self firmware, avoid the firmware of metering device to falsify and suffer.

Preferably, a vertical cylinder is arranged in the middle of the bulge; the interior of the vertical cylinder is hollow; a rotating ring is rotatably arranged in the vertical cylinder; the periphery of the upper end of the side surface of the rotating ring is provided with a unidirectional chute; a plurality of reeds are fixedly arranged on the inner wall of the vertical cylinder; the reed can enter the unidirectional inclined groove; a rotating rod is rotatably arranged in the vertical cylinder; the rotating rod penetrates through the rotating ring and can rotate mutually; the lower end of the rotating rod is positioned in the bulge; the lower end of the rotating rod is provided with a transverse rod; the rotating rod is not contacted with the rotating disc; the upper surface of the turntable is provided with a stop lever; the stop lever is contacted with the transverse lever; the upper end of the rotating ring is provided with a sliding claw; a transverse push rod is arranged at the upper end of the rotating rod; the push rod is positioned in the gap of the sliding claw; a third magnetic block is arranged at the upper end of the rotating rod; a third sensor is arranged at the top of the vertical cylinder; the sensor III is electrically connected with a processor unit in the electronic module; the sensor III is a Hall sensor;

when the rotating ring rotates forwards, the transverse pushing rod on the rotating rod is clamped in a gap hole between the sliding claws, so that the rotating ring is pushed by the sliding claws to move forwards along with the rotating rod; when liquid in a pipeline reversely flows, the impeller is pushed to reversely rotate, so that the rotating shaft reversely rotates, the rotating disc is driven to reversely rotate, the rotating rod reversely rotates under the action of the stop lever on the rotating disc, when the rotating rod reversely rotates, the transverse push rod on the rotating rod moves along the arc surface of the sliding claw, no pushing force exists on the sliding claw, meanwhile, when the rotating ring reversely rotates, the reed on the inner wall of the vertical cylinder is clamped into the unidirectional inclined groove when the unidirectional inclined groove passes through, the rotating ring is prevented from rotating, meanwhile, the rotating rod generates displacement in the vertical direction, the distance between the magnetic block III and the sensor III on the rotating rod is changed, the sensor III generates pulses, then, generated pulse signals are sent to the processor unit, after the processor unit receives the signals, the metering data generated when the pulse signals exist is marked as reverse metering data, and the metering data generated when the pulse signals do not exist is marked as forward metering data, meanwhile, the forward metering data and the reverse metering data are recorded separately, so that the forward flow and the reverse flow in a pipeline are effectively distinguished, the metering accuracy is improved, meanwhile, the forward metering data and the reverse metering data are recorded separately, an individual user can be prevented from reversely connecting an instrument through the reverse connection instrument, the instrument is enabled to be reversely rotated, the reading of the instrument is reduced, and the payment due to the fee is avoided.

Preferably, a plastic layer is arranged on the upper surface of the upper cover; a signal antenna is arranged in the plastic layer; the signal antenna is electrically connected with a processor unit in the electronic module; the signal antenna is connected with the NB-IOT unit after being transferred by the processor unit;

when in work, the signal antenna arranged on the surface of the upper cover can effectively improve the connection stability of the instrument and the Internet of things, improve the speed and power consumption during data transmission, meanwhile, the signal antenna has certain redundancy, the signal transmitting capability can still be maintained in the event of partial damage, and therefore, in the event of a breach of the meter cover, the signal antenna on the surface of the upper cover is damaged, the processor unit can detect the damage through the signal antenna, thereby sending a reminding signal to prompt the staff to carry out the treatment and the maintenance, avoiding the individual user from modifying the metering data and avoiding the due payment by damaging the upper cover and opening the meter, and simultaneously, in the using process, the damaged or damaged instrument is timely maintained or replaced by judging whether the signal antenna is damaged or not and judging the integrity of the signal antenna and monitoring the state of the metering instrument.

The management system of the metering instrument based on the Internet of things and the block chain comprises a master block chain network serving as a subordinate functional module and a payment system; the management system comprises an analysis and statistics module and an authentication control module; the analysis and statistics module is used for analyzing the metering data uploaded by the metering instrument and the state monitoring data of the metering instrument; the analysis and statistics module analyzes the metering data according to the time axis sequence, and sends an alarm signal to prompt a worker to go to overhaul when the metering data behind the time axis is smaller than the metering data in front of the time axis; when the metering instrument uploads metering data through the NB-IOT unit, the metering instrument sends hardware information inside the metering instrument along with the metering data; the hardware information sent by the metering instrument along with the metering data at a single time is the hardware information of random hardware in the metering instrument; when the metering instrument is initially networked through the Internet of things, sending hardware information of all hardware of the metering instrument to the authentication control module; when the metering data is uploaded by the metering instrument, the hardware information attached to the metering data is authenticated through the authentication control module, and after the authentication is passed, the hardware of the metering instrument is judged not to be tampered, and the metering data is credible; if the authentication is not passed, the authentication control module sends out an alarm signal to inform a worker to go to overhaul; the authentication control module can remotely control the opening and closing of the first electromagnet and the second electromagnet in the metering instrument; the authentication control module synchronously stores the remote control information of the metering instrument into a master block chain network;

when the system works, the metering instrument sends the metering data to the master authority block chain network through the NB-IOT unit for a user to check, and simultaneously, random hardware information synchronously sent when the metering instrument sends the metering data can further ensure the integrity of the metering instrument, thereby avoiding that an individual user modifies the metering instrument by using a technical means, further modifying the metering data and avoiding paying fee evasion, simultaneously, along with the hardware information synchronously sent by the metering data, the system can further judge whether the firmware of the metering instrument is modified, and when the modification occurs, a worker is informed to timely process the firmware, and simultaneously, in the using process, the metering data is analyzed by analyzing the time axis sequence of the installation of the statistical module, whether the metering data is credible or not and whether the metering data is modified or not, thereby ensuring the accuracy and the safety of the metering data transmitted to the system through the Internet of things technology, avoid the user to falsify the measurement data, avoid paying the fee, simultaneously, when the measuring instrument need change power supply unit or the measuring instrument breaks down and needs to be maintained, send control information to the measuring instrument through the authentication control module, control the action of electro-magnet one and electro-magnet two, remove the inside locking of instrument, the staff of being convenient for opens the measuring instrument and operates, simultaneously, the control record of authentication control module to the measuring instrument will be preserved, prevent that user and staff from uniting, falsify the measuring instrument, avoid paying the fee.

The invention has the following beneficial effects:

1. according to the metering instrument based on the Internet of things and the block chain, the main body, the upper cavity and the upper cover are arranged, so that a mechanical part and an electronic part in the instrument are separated, the electronic part of the water meter is prevented from contacting water in a pipeline in the use process, meanwhile, water vapor in the pipeline is prevented from permeating into the upper cavity, the working environment of the electronic part is ensured to be dry, the service life of an electronic device is prolonged, meanwhile, the water meter is prevented from being disassembled violently on the basis of convenient disassembly and maintenance through the arranged extension rod I and the extension rod II, and a notice is sent in time when the water meter is disassembled violently, so that the metering data is prevented from being tampered.

2. According to the metering instrument based on the Internet of things and the block chain, the stop lever, the vertical cylinder, the rotating lever, the magnetic block III, the sliding claw and the sensor III are arranged, so that the forward flow and the reverse flow can be distinguished when the water meter is used for metering, the metering accuracy is improved, meanwhile, the situation that a water meter is reversely installed by a single user and is reversely rotated is avoided, the metering data is reduced, and the payment due cost is avoided.

3. According to the metering instrument based on the Internet of things and the block chain, the NB-IOT unit is used for uploading the metering data to the master block chain network through the Internet of things, so that the accuracy of the data is guaranteed, the metering data is prevented from being tampered by workers midway, meanwhile, the NB-IOT unit uploads the metering data to the master block chain network once at random intervals in a metering period, the data in the metering instrument can be effectively prevented from being tampered by a user in the use process of the metering instrument, meanwhile, unreasonable metering data can be timely found through the recording of the block chain, and users who steal or miss payment of fees can be found out.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is an enlarged view of a portion of FIG. 1 at C;

FIG. 5 is a system flow diagram of the present invention;

in the figure: the water inlet pipe comprises a main body 1, a water inlet pipe 11, a water outlet pipe 12, a first clamping groove 13, an upper cover 2, a second clamping groove 21, an inner layer plate 22, an outer layer plate 23, a sleeve 3, a filter screen 31, an impeller 32, a rotating shaft 33, an upper cavity 4, a first electromagnet 41, a first extension rod 411, a second electromagnet 42, a second extension rod 421, a first sealing ring 43, a second sealing ring 44, a protrusion 5, a rotating disc 51, a first magnetic block 511, a first cavity 52, a first mounting hole 53, a first sensor 54, a second mounting hole 55, a second magnetic block 551, a spring 552, an elastic membrane 553, a second sensor 56, a baffle rod 57, a vertical cylinder 6, a rotating ring 61, a unidirectional inclined groove 611, a reed 612, a rotating rod 62, a third magnetic block 622, a sliding claw 63, a third sensor 64 and an electronic module 7.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, the metering device based on the internet of things and the block chain comprises a main body 1, wherein the main body 1 is hollow; an upper cover 2 is arranged above the main body 1; a sleeve 3 is arranged in the main body 1; a blocking ring is arranged in the middle of the sleeve 3; the blocking ring is tightly attached to the inner wall of the main body 1, and the blocking ring and the main body are sealed; a water inlet pipe 11 is arranged at the left side of the main body 1; a water outlet pipe 12 is arranged on the right side of the main body 1; the water inlet pipe 11 is positioned below the blocking ring; the water outlet pipe 12 is positioned above the blocking ring; a filter screen 31 is arranged outside the sleeve 3; the filter screen 31 is fixedly connected to the lower surface of the barrier ring; a gap is formed between the filter screen 31 and the inner wall of the main body 1; a gap is formed between the filter screen 31 and the outer wall of the sleeve 3; a flow guide hole is formed in the side wall of the sleeve 3 along the tangential direction; the flow guide holes above and below the blocking ring are opposite in direction; an upper cavity 4 is arranged in the main body 1; the upper end of the sleeve 3 is fixedly connected to the bottom surface of the upper cavity 4 through a screw; an impeller 32 is arranged in the sleeve 3; the impeller 32 is provided with a rotating shaft 33; the upper end of the rotating shaft 33 is positioned in the upper cavity 4; a bulge 5 is arranged on the inner bottom surface of the upper cavity 4; the bulge 5 is hollow and provided with a first cavity 52; a rotary disc 51 is rotatably arranged in the bulge 5; the rotating shaft 33 is connected with the rotating disc 51 through a spline; the edge of the turntable 51 is uniformly provided with a first magnetic block 511; the number of the magnetic blocks I511 is even; a first mounting hole 53 and a second mounting hole 55 are formed in the side wall of the bulge 5; the first mounting hole 53 and the second mounting hole 55 are positioned on the same straight line; the central line of the first mounting hole 53 and the first magnetic block 511 are positioned on the same horizontal plane; the inner side surfaces of the first mounting hole 53 and the second mounting hole 55 are provided with threads; a first sensor 54 is installed in the first mounting hole 53 through threads; the first sensor 54 is a Hall sensor; a second sensor 56 is installed in the second mounting hole 55 through threads; a second magnetic block 551 is slidably mounted in the second mounting hole 55; the second magnetic block 551 and the first magnetic block 511 are opposite in like magnetic pole; a spring 552 is arranged in the second mounting hole 55; the spring 552 is positioned between the second magnetic block 551 and the second sensor 56; the second sensor 56 is a piezoelectric film sensor; an electronic module 7 is arranged in the upper cavity 4; the electronic module 7 comprises a power supply unit, an NB-IOT unit, a processor unit and a display unit; the display unit may display the relevant data on the upper cover 2; the first sensor 54 and the second sensor 56 are both electrically connected with the processor unit in the electronic module 7; the NB-IOT unit transmits data back to a management unit through the Internet of things for cost statistics, and simultaneously, the uploaded data are synchronously stored in a block chain network;

when the water-saving device works, a metering instrument is connected to a pipeline through a water inlet pipe 11 and a water outlet pipe 12 on a main body 1, after the water-saving device is used, water in the pipeline flows into the main body 1, the water flows into the main body 1 and then pushes an impeller 32 to rotate, the impeller 32 rotates and then drives a rotating shaft 33 to rotate, as the rotating shaft 33 is connected with a rotating disc 51 through a spline, the rotating disc 51 rotates along with the rotating shaft 33, meanwhile, a first magnetic block 511 uniformly arranged on the rotating disc 51 rotates along with the rotating disc 51, as a first sensor 54 is arranged on a bulge 5, the first magnetic block 511 rotates to cause the action of a first sensor 54 serving as a Hall sensor to generate pulses, then the generated pulses are transmitted to a processor unit to be calculated and processed, water consumption data are obtained, and meanwhile, as the first magnetic block 511 rotates along with the rotating disc 51, a second magnetic block 551 positioned in a second mounting hole 55 periodically receives repulsive force from the first magnetic block 511, therefore, the second magnetic block 551 periodically moves, the second magnetic block 551 extrudes the second sensor 56 when moving, the second sensor 56 is a piezoelectric film sensor, the second sensor 56 generates pulses after being extruded by the second magnetic block 551, the generated pulses are transmitted to the processor unit and are calculated and processed to obtain water consumption data, meanwhile, after two groups of water consumption data are obtained, the processor unit compares the two groups of water consumption data to ensure that the water consumption data are accurate, if the two groups of water consumption data exceed the error range, an overhaul signal is sent to a management unit through the Internet of things to remind a worker to overhaul, meanwhile, when partial users with low quality intentionally place magnets on the water meter to reduce the payment, when the normal work of the water meter is interfered, the two groups of water consumption data have larger errors certainly, then, the transmitted maintenance signal can remind the staff to perform maintenance in time, prevent illegal operation of the user in time and prevent the user from stealing and missing payment, meanwhile, the upper cavity 4 is arranged in the main body 1, the electronic part of the measuring instrument can be separated from the mechanical part, the electronic part of the instrument is prevented from being out of order, the instrument needs to be completely disassembled when the maintenance is performed, the operation difficulty is increased, meanwhile, the electronic part and the mechanical part are separated, the penetration of water vapor is effectively isolated, the drying of the working environment of the electronic part is ensured, the service life of the electronic part is prolonged, meanwhile, after the measuring instrument transmits the measuring data to a management unit through the internet of things, the measuring data is synchronously stored in the master authority block chain network, when the management unit collects water charges, the payment due fee is calculated according to the measuring data stored and uploaded to the master authority block chain network, the amount of money to be paid is shared into a payment system for users to inquire and pay, meanwhile, the users can log in a block chain network for storing metering data by themselves to inquire the metering data by themselves, meanwhile, a metering instrument uploads the metering data through an NB-IOT unit at random intervals in a metering period, the uploaded metering data is marked as period intermediate data, the final metering data of the period is uploaded at the end of the metering period, the period intermediate data and the final metering data uploaded by the metering instrument are stored in a master authority block chain network according to an uploading time sequence, the metering data is prevented from being tampered and damaged through the block chain network, the deviation of the metering fee is caused, meanwhile, the period intermediate data are uploaded at random intervals in the metering period, the individual users can be effectively prevented from tampering the metering data, and the payment can be avoided, meanwhile, periodic intermediate data are uploaded at random intervals, so that the working time and working frequency of the NB-IOT unit are reduced, the consumption of electric quantity in the power supply unit is reduced, the service time of the metering instrument after the power supply unit is replaced once is prolonged, and the use cost is reduced.

As an embodiment of the present invention, an elastic film 553 is installed inside the first mounting hole 53 two; the elastic membrane 553 is tightly attached to the inner wall of the second mounting hole 55, and the two parts are kept sealed; the elastic membrane 553 is positioned between the second magnetic block 551 and the second sensor 56; the second sensor 56 is tightly attached to the surface of the second sensor 56; the spring 552 is located between the elastic membrane 553 and the second sensor 56; the diameter of the opening of the mounting hole in the hole cavity inside the bulge 5 is smaller than that of the second magnetic block 551;

during operation, the second magnetic block 551 moves under the action of the first magnetic block 511, the second magnetic block 551 extrudes the elastic membrane 553 when moving, so that the elastic membrane 553 deforms, thereby extruding the second sensor 56, so that the second sensor 56 generates a pulse signal, meanwhile, the second sensor 56 is isolated from the space in the bulge 5 by arranging the elastic membrane 553, the second sensor 56 is prevented from being corroded by water vapor and the water vapor permeates into the upper cavity 4 from the second mounting hole 55, meanwhile, when the second sensor 56 breaks down and needs to be replaced, the liquid in the instrument can be ensured not to flow out through the second mounting hole 55, the isolation between the liquid and the external environment is ensured, thereby maintaining and replacing the second sensor 56 under the normal working state of the instrument, the limitation that the instrument can be maintained after being disassembled is removed, and the maintenance difficulty is reduced.

As an embodiment of the present invention, the inner side surface of the main body 1 is provided with a thread; the outer side surface of the upper cavity 4 is provided with threads; the upper cavity 4 is fixedly connected in the main body 1 through threads; a first through hole is formed in the side wall of the upper cavity 4; a first fixing groove is formed in the inner side surface of the main body 1; the first through hole corresponds to the first fixing groove; an electromagnet I41 is arranged in the upper cavity 4; an extension rod I411 of the electromagnet I41 can be inserted into a first fixing groove through a first through hole; the first extension rod 411 of the electromagnet I41 keeps in an extension state under a normal state; the first extension rod 411 is made of plastic materials; a thin metal wire is arranged in the first extension rod 411; the fine wire is electrically connected with a processor unit in the electronic module 7; the upper end of the upper cavity 4 is tightly attached to the lower surface of the upper cover 2; a second sealing ring 44 is arranged between the main body 1 and the upper cover 2; the inner side surface of the upper cavity 4 is uniformly provided with a first clamping groove 13 at the same height; the edge of the upper cover 2 is uniformly provided with a second clamping groove 21;

when the device works, after the instrument is installed, the upper cavity 4 is fixedly connected in the main body 1 through threads, the electromagnet I41 is closed, the extension rod I411 keeps an extension state and penetrates through the through hole I to be inserted into the fixing groove I to prevent the upper cavity 4 and the main body 1 from rotating, so that a part of users with lower quality are prevented from forcibly opening the instrument to destroy or change instrument metering data, meanwhile, when the upper cavity 4 is forcibly rotated by external force, after the upper cavity is opened, the extension rod I411 is broken by shearing force between the upper cavity 4 and the main body 1, so that thin metal wires in the extension rod I411 are broken, after the processor unit receives signals, an alarm signal is sent through the Internet of things to inform a worker to process, the user is prevented from illegally opening the instrument to modify the metering data, payment is avoided, and when the device needs to be overhauled, the worker sends signals to the processor unit through the terminal, the processor unit controls the electromagnet I41 to be opened, the extension rod I411 retracts, locking between the cavity 4 and the main body 1 is achieved in contact, meanwhile, if the instrument breaks down, the extension rod I411 cannot be controlled to retract, the extension rod I411 can be forcibly twisted off by a worker, the instrument is opened to be overhauled, the instrument cannot be directly scrapped due to the fact that the instrument cannot be opened to be overhauled, use cost is reduced, meanwhile, when the instrument is opened by the worker, the instrument is clamped into the first clamping groove 13 and the second clamping groove 21 through special tools, the instrument is opened in sequence, meanwhile, safety of a measuring instrument firmware can be guaranteed in the using process of the measuring instrument through thin metal wires, and the measuring instrument is prevented from being illegally opened and the firmware in the measuring instrument is prevented from being tampered.

As an embodiment of the present invention, an annular groove is formed at the upper end of the outer side surface of the upper cavity 4; the lower surface of the upper cover 2 is provided with an inner layer plate 22 and an outer layer plate 23; the diameter of the inner layer plate 22 is smaller than that of the outer layer plate 23; a gap is formed between the inner layer plate 22 and the outer layer plate 23; the upper end of the upper cavity 4 is inserted into a gap between the inner plate 22 and the outer plate 23; the outer plate 23 and the annular groove arranged at the upper end of the outer side surface of the upper cavity 4 are mutually wedged; the outer diameter of the outer plate 23 is the same as that of the upper cavity 4; the upper end of the inner side surface of the upper cavity 4 is provided with threads; the outer side surface of the inner-layer plate 22 is provided with threads; the inner plate 22 is fixed on the inner side of the upper cavity 4 through threads; the direction of the threads on the inner side surface of the upper cavity 4 is opposite to that of the threads on the outer side surface of the upper cavity 4; a second through hole is formed in the inner layer plate 22; the second through hole penetrates through the outer layer plate 23; a second fixing groove is formed in the inner side wall of the main body 1; the second fixing groove corresponds to the second through hole; the upper cavity 4 is internally provided with a second electromagnet 42; a second extending rod 421 of the second electromagnet 42 can be inserted into the second fixing groove through the second through hole; the second extension rod 421 of the second electromagnet 42 keeps an extended state in a normal state; the second extension rod 421 is made of plastic material; a fine metal wire is arranged in the second extension rod 421; the fine wire is electrically connected with a processor unit in the electronic module 7; a first sealing ring 43 is arranged between the outer layer plate 23 and the upper cavity 4;

when the electronic module works, the upper end of the upper cavity 4 is inserted between the inner layer plate 22 and the outer layer plate 23, the sealing performance inside the upper cavity 4 is further enhanced, vapor is prevented from permeating into the upper cavity 4, the work of the electronic module 7 is influenced, meanwhile, the threads arranged on the inner layer plate 22 and the inner layer of the upper cavity 4 fix the upper cover 2 and the upper cavity 4 mutually, the fixing effect is further improved through the threads opposite to the inner side surface of the main body 1, the user is prevented from violently disassembling in the using process, metering data are falsified, meanwhile, the extension rod II 421 of the electromagnet II 42 penetrates through the extension rod II to be inserted into the fixing groove II, the upper cover 2, the upper cavity 4 and the main body 1 are relatively fixed, the disassembling difficulty is improved, meanwhile, when the instrument is violently disassembled, the extension rod II 421 is broken, the thin metal wires in the extension rod II 421 are broken, the processor unit receives signals and sends alarm signals through the Internet of things, the staff is informed to process, thus avoiding the user from illegally opening the meter, modifying the metering data and avoiding payment, and simultaneously, when the maintenance is needed, the worker sends a signal to the processor unit through the terminal, the processor unit controls the electromagnet II 42 to be opened, so that the extension rod II 421 retracts to contact the upper cover 2, the upper cavity body 4 and the main body 1 to be locked, meanwhile, because the extension rod II 421 is made of plastic materials, when the instrument fails and the second extension bar 421 cannot retract, the staff can open the instrument by forcibly breaking the second extension bar 421, the instrument is overhauled to avoid direct scrapping of the instrument due to the fact that the instrument cannot be opened, and simultaneously, the monitoring of the measuring instrument on the integrity of the measuring instrument can be further improved through the arranged thin metal wires, the safety of the firmware of the measuring instrument is guaranteed, and the firmware of the measuring instrument is prevented from being tampered.

As an embodiment of the present invention, a vertical cylinder 6 is installed in the middle of the protrusion 5; the vertical cylinder 6 is hollow inside; a rotating ring 61 is rotatably arranged in the vertical cylinder 6; a unidirectional inclined groove 611 is formed in the upper end periphery of the side surface of the rotating ring 61; a plurality of reeds 612 are fixedly arranged on the inner wall of the vertical cylinder 6; the reed 612 can enter the unidirectional inclined groove 611; a rotating rod 62 is rotatably arranged in the vertical cylinder 6; the rotating rod 62 penetrates through the rotating ring 61, and the rotating rod and the rotating ring can rotate mutually; the lower end of the rotating rod 62 is positioned inside the bulge 5; the lower end of the rotating rod 62 is provided with a transverse rod; the rotating rod 62 is not in contact with the turntable 51; a stop lever 57 is arranged on the upper surface of the turntable 51; the stop lever 57 is in contact with the transverse lever; the upper end of the rotating ring 61 is provided with a sliding claw 63; a transverse push rod is arranged at the upper end of the rotating rod 62; the push rod is positioned in the gap of the sliding claw 63; a third magnetic block 622 is arranged at the upper end of the rotating rod 62; the top of the vertical cylinder 6 is provided with a third sensor 64; the third sensor 64 is electrically connected with the processor unit in the electronic module 7; the third sensor 64 is a Hall sensor;

when the device works, when liquid in a pipeline flows in the forward direction, the impeller 32 is pushed to rotate in the forward direction, the rotating shaft 33 is enabled to rotate in the forward direction, the rotating disc 51 is driven to rotate in the forward direction, the rotating rod 62 rotates in the forward direction under the action of the stop lever 57 on the rotating disc, when the rotating rod 62 rotates in the forward direction, the transverse push rod on the rotating rod 62 is clamped in a gap hole between the sliding claws 63, so that the rotating ring 61 is pushed to move forward along with the rotating rod 62 through the sliding claws 63, at the moment, the rotating rod 62 does not have vertical displacement, the distance between the magnetic block III 622 on the rotating rod 62 and the sensor III 64 does not change, the sensor III 64 does not generate pulse, and meanwhile, in the forward rotation process of the rotating ring 61, the reed 612 on the inner wall of the vertical cylinder 6 bounces when the unidirectional inclined groove 611 passes through, and no acting force is applied to the unidirectional inclined groove 611; when the liquid in the pipeline flows reversely, the impeller 32 is pushed to rotate reversely, the rotating shaft 33 is made to rotate reversely, the rotating disc 51 is driven to rotate reversely, the rotating rod 62 rotates reversely under the action of the stop lever 57 on the rotating disc, when the rotating rod 62 rotates reversely, the transverse push rod on the rotating rod 62 moves along the arc surface of the sliding claw 63, no pushing force is applied to the sliding claw 63, meanwhile, when the rotating ring 61 rotates reversely, the reed 612 on the inner wall of the vertical cylinder 6 is clamped into the unidirectional inclined groove 611 when the unidirectional inclined groove 611 passes through, the rotating ring 61 is prevented from rotating, meanwhile, the rotating rod 62 generates displacement in the vertical direction, the distance between the magnetic block three 622 on the rotating rod 62 and the sensor three 64 is changed, the sensor three 64 generates pulse, then, the generated pulse signal is sent to the processor unit, and after the processor unit receives the signal, the metering data generated when the pulse signal exists is marked as reverse metering data, the metering data mark that produces when not having this pulse signal is forward metering data, simultaneously, forward metering data separately records with reverse metering data, thereby forward flow and reverse flow in the effectual differentiation pipeline, improve the accuracy of measurement, simultaneously, separately record through forward metering data and reverse metering data, can avoid the individual user to pass through reverse connection instrument, make the instrument reversal, reduce the instrument reading, thereby avoid the due payment expense, simultaneously, the sensor three 64 and the sensor two 56 that set up can monitor the magnetic field environment in the instrument, improve the measuring ability of instrument to magnetic field interference, avoid the individual user to prevent strong magnet outside the instrument, disturb the normal work of instrument, thereby avoid paying the expense.

As an embodiment of the present invention, the upper surface of the upper cover 2 is provided with a plastic layer; a signal antenna is arranged in the plastic layer; the signal antenna is electrically connected with a processor unit in the electronic module 7; the signal antenna is connected with the NB-IOT unit after being transferred by the processor unit;

when in work, the signal antenna arranged in the surface of the upper cover 2 can effectively improve the connection stability of the instrument and the Internet of things, improve the speed and power consumption during data transmission, meanwhile, the signal antenna has certain redundancy, the signal transmitting capability can be maintained even when partial damage occurs, and therefore, when the meter upper cover 2 is damaged, the signal antenna on the surface of the upper cover 2 is damaged, the processor unit can detect the damage through the signal antenna, thereby sending a reminding signal to prompt the staff to carry out the treatment and the maintenance, avoiding the individual user from modifying the metering data and avoiding the payment due by destroying the upper cover 2 and opening the meter, and simultaneously, in the using process, the damaged or damaged instrument is timely maintained or replaced by judging whether the signal antenna is damaged or not and judging the integrity of the signal antenna and monitoring the state of the metering instrument.

The management system of the metering instrument based on the Internet of things and the block chain comprises a master block chain network serving as a subordinate functional module and a payment system; the management system comprises an analysis and statistics module and an authentication control module; the analysis and statistics module is used for analyzing the metering data uploaded by the metering instrument and the state monitoring data of the metering instrument; the analysis and statistics module analyzes the metering data according to the time axis sequence, and sends an alarm signal to prompt a worker to go to overhaul when the metering data behind the time axis is smaller than the metering data in front of the time axis; when the metering instrument uploads metering data through the NB-IOT unit, the metering instrument sends hardware information inside the metering instrument along with the metering data; the hardware information sent by the metering instrument along with the metering data at a single time is the hardware information of random hardware in the metering instrument; when the metering instrument is initially networked through the Internet of things, sending hardware information of all hardware of the metering instrument to the authentication control module; when the metering data is uploaded by the metering instrument, the hardware information attached to the metering data is authenticated through the authentication control module, and after the authentication is passed, the hardware of the metering instrument is judged not to be tampered, and the metering data is credible; if the authentication is not passed, the authentication control module sends out an alarm signal to inform a worker to go to overhaul; the authentication control module can remotely control the opening and closing of the first electromagnet 41 and the second electromagnet 42 in the metering instrument; the authentication control module synchronously stores the remote control information of the metering instrument into a master block chain network;

when the system works, the metering instrument sends the metering data to the master authority block chain network through the NB-IOT unit for a user to check, and simultaneously, random hardware information synchronously sent when the metering instrument sends the metering data can further ensure the integrity of the metering instrument, thereby avoiding that an individual user modifies the metering instrument by using a technical means, further modifying the metering data and avoiding paying fee evasion, simultaneously, along with the hardware information synchronously sent by the metering data, the system can further judge whether the firmware of the metering instrument is modified, and when the modification occurs, a worker is informed to timely process the firmware, and simultaneously, in the using process, the metering data is analyzed by analyzing the time axis sequence of the installation of the statistical module, whether the metering data is credible or not and whether the metering data is modified or not, thereby ensuring the accuracy and the safety of the metering data transmitted to the system through the Internet of things technology, the metering data is prevented from being tampered by a user, payment due is avoided, meanwhile, when the metering instrument needs to be replaced by a power supply unit or the metering instrument breaks down and needs to be maintained, control information is sent to the metering instrument through the authentication control module, the first electromagnet 41 and the second electromagnet 42 are controlled to act, the locking inside the instrument is released, a worker can conveniently open the metering instrument to operate, meanwhile, the control record of the authentication control module on the metering instrument is stored, the user is prevented from being combined with the worker, the metering instrument is tampered, and payment due is avoided.

The specific working process is as follows:

when the water-saving device works, a metering instrument is connected to a pipeline through a water inlet pipe 11 and a water outlet pipe 12 on a main body 1, after the water-saving device is used, water in the pipeline flows into the main body 1, the water flows into the main body 1 and then pushes an impeller 32 to rotate, the impeller 32 rotates and then drives a rotating shaft 33 to rotate, as the rotating shaft 33 is connected with a rotating disc 51 through a spline, the rotating disc 51 rotates along with the rotating shaft 33, meanwhile, a first magnetic block 511 uniformly arranged on the rotating disc 51 rotates along with the rotating disc 51, as a first sensor 54 is arranged on a bulge 5, the first magnetic block 511 rotates to cause the action of a first sensor 54 serving as a Hall sensor to generate pulses, then the generated pulses are transmitted to a processor unit to be calculated and processed, water consumption data are obtained, and meanwhile, as the first magnetic block 511 rotates along with the rotating disc 51, a second magnetic block 551 positioned in a second mounting hole 55 periodically receives repulsive force from the first magnetic block 511, the second magnetic block 551 periodically moves, the second sensor 56 is extruded when the second magnetic block 551 moves, and the second sensor 56 is a piezoelectric film sensor, so that the second sensor 56 generates pulses after being extruded by the second magnetic block 551, and the generated pulses are transmitted to the processor unit for calculation and processing to obtain water consumption data; the second magnetic block 551 moves under the action of the first magnetic block 511, and the second magnetic block 551 presses the elastic membrane 553 when moving, so that the elastic membrane 553 is deformed, and is pressed to the second sensor 56, and the second sensor 56 generates a pulse signal; after the instrument is installed, the upper cavity 4 is fixedly connected in the main body 1 through threads, the electromagnet I41 is closed, the extension rod I411 keeps an extension state and penetrates through the through hole I to be inserted into the fixing groove I, meanwhile, when the upper cavity 4 rotates forcibly under the action of external force and is opened, the extension rod I411 is broken under the action of shearing force between the upper cavity 4 and the main body 1, thin metal wires in the extension rod I411 are broken, and after the processor unit receives signals, alarm signals are sent through the Internet of things to inform workers of processing; the upper end of the upper cavity 4 is inserted between the inner layer plate 22 and the outer layer plate 23, meanwhile, threads on the inner layer of the inner layer plate 22 and threads on the inner layer of the upper cavity 4 are arranged, the upper cover 2 and the upper cavity 4 are fixed with each other, meanwhile, an extension rod II 421 of the electromagnet II 42 penetrates through the extension rod II to be inserted into a fixing groove II, the upper cover 2, the upper cavity 4 and the main body 1 are fixed relatively, meanwhile, when the instrument is disassembled violently, the extension rod II 421 is broken, thin metal wires in the extension rod II 421 are broken, the processor unit receives signals and sends alarm signals through the Internet of things to inform a worker of processing, and meanwhile, when the instrument needs to be overhauled, the worker sends signals to the processor unit through the terminal, the processor unit controls the electromagnet II 42 to be opened, the extension rod II 421 is retracted, and the locking between the upper cover 2, the upper cavity 4 and the main body 1 is contacted; when the liquid in the pipeline flows forwards, the impeller 32 is pushed to rotate forwards, so that the rotating shaft 33 rotates forwards to drive the rotating disc 51 to rotate forwards, the rotating rod 62 rotates forwards under the action of the stop lever 57 on the rotating disc, when the rotating rod 62 rotates forwards, the transverse pushing rod on the rotating rod 62 is clamped in a gap hole between the sliding claws 63, so that the rotating ring 61 is pushed by the sliding claws 63 to move forwards along with the rotating rod 62, at the moment, the rotating rod 62 does not have vertical displacement, the distance between the magnetic block III 622 on the rotating rod 62 and the sensor III 64 does not change, the sensor III 64 does not generate pulse, and meanwhile, in the forward rotation process of the rotating rod 61, the reed 612 on the inner wall of the vertical cylinder 6 bounces when passing through the unidirectional inclined groove 611, and no action force is applied to the unidirectional inclined groove 611; when the liquid in the pipeline flows reversely, the impeller 32 is pushed to rotate reversely, the rotating shaft 33 is made to rotate reversely, the rotating disc 51 is driven to rotate reversely, the rotating rod 62 rotates reversely under the action of the stop lever 57 on the rotating disc, when the rotating rod 62 rotates reversely, the transverse push rod on the rotating rod 62 moves along the arc surface of the sliding claw 63, no pushing force is applied to the sliding claw 63, meanwhile, when the rotating ring 61 rotates reversely, the reed 612 on the inner wall of the vertical cylinder 6 is clamped into the unidirectional inclined groove 611 when the unidirectional inclined groove 611 passes through, the rotating ring 61 is prevented from rotating, meanwhile, the rotating rod 62 generates displacement in the vertical direction, the distance between the magnetic block three 622 on the rotating rod 62 and the sensor three 64 is changed, the sensor three 64 generates pulse, then, the generated pulse signal is sent to the processor unit, and after the processor unit receives the signal, the metering data generated when the pulse signal exists is marked as reverse metering data, marking the metering data generated in the absence of the pulse signal as forward metering data; when the instrument upper cover 2 suffers destruction, the signal antenna on the surface of the upper cover 2 is damaged, and the processor unit can detect destruction through the signal antenna, so that a reminding signal is sent to prompt a worker to process and overhaul.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Metering device based on thing networking and block chain, including main part (1), its characterized in that: the main body (1) is hollow inside; an upper cover (2) is arranged above the main body (1); a sleeve (3) is arranged in the main body (1); a blocking ring is arranged in the middle of the sleeve (3); the blocking ring is tightly attached to the inner wall of the main body (1), and the blocking ring and the main body are sealed; a water inlet pipe (11) is arranged on the left side of the main body (1); a water outlet pipe (12) is arranged on the right side of the main body (1); the water inlet pipe (11) is positioned below the blocking ring; the water outlet pipe (12) is positioned above the blocking ring; a filter screen (31) is arranged on the outer side of the sleeve (3); the filter screen (31) is fixedly connected to the lower surface of the blocking ring; a gap is formed between the filter screen (31) and the inner wall of the main body (1); a gap is formed between the filter screen (31) and the outer wall of the sleeve (3); a flow guide hole is formed in the side wall of the sleeve (3) along the tangential direction; the flow guide holes above and below the blocking ring are opposite in direction; an upper cavity (4) is arranged in the main body (1); the upper end of the sleeve (3) is fixedly connected to the bottom surface of the upper cavity (4) through a screw; an impeller (32) is arranged in the sleeve (3); a rotating shaft (33) is arranged on the impeller (32); the upper end of the rotating shaft (33) is positioned in the upper cavity (4); a bulge (5) is arranged on the inner bottom surface of the upper cavity (4); the bulge (5) is hollow and provided with a first cavity (52); a rotary disc (51) is rotatably arranged in the bulge (5); the rotating shaft (33) is connected with the rotating disc (51) through a spline; the edge of the rotary table (51) is uniformly provided with a first magnetic block (511); the number of the magnetic blocks I (511) is even; a first mounting hole (53) and a second mounting hole (55) are formed in the side wall of the bulge (5); the first mounting hole (53) and the second mounting hole (55) are positioned on the same straight line; the central line of the first mounting hole (53) and the first magnetic block (511) are positioned on the same horizontal plane; threads are arranged on the inner side surfaces of the first mounting hole (53) and the second mounting hole (55); a first sensor (54) is installed in the first installation hole (53) through threads; the first sensor (54) is a Hall sensor; a second sensor (56) is installed in the second mounting hole (55) through threads; a second magnetic block (551) is arranged in the second mounting hole (55) in a sliding manner; the second magnetic block (551) and the first magnetic block (511) are opposite in like magnetic pole; a spring (552) is arranged in the second mounting hole (55); the spring (552) is positioned between the second magnetic block (551) and the second sensor (56); the second sensor (56) is a piezoelectric film sensor; an electronic module (7) is arranged in the upper cavity (4); the electronic module (7) comprises a power supply unit, an NB-IOT unit, a processor unit and a display unit; the display unit can display related data on the upper cover (2); the first sensor (54) and the second sensor (56) are both electrically connected with a processor unit in the electronic module (7); and the NB-IOT unit transmits the data back to a management unit through the Internet of things for cost statistics, and simultaneously, the uploaded data are synchronously stored in the master block chain network.

2. The internet of things and blockchain based metering device of claim 1, wherein: an elastic membrane (553) is arranged in the first mounting hole (53) and the second mounting hole; the elastic membrane (553) is tightly attached to the inner wall of the second mounting hole (55), and the elastic membrane and the inner wall of the second mounting hole are kept sealed; the elastic membrane (553) is positioned between the second magnetic block (551) and the second sensor (56); the second sensor (56) is tightly attached to the surface of the second sensor (56); the spring (552) is located between the elastic membrane (553) and the second sensor (56); the diameter of the opening of the mounting hole in the hole cavity inside the bulge (5) is smaller than that of the second magnetic block (551).

3. The internet of things and blockchain based metering device of claim 1, wherein: the inner side surface of the main body (1) is provided with threads; the outer side surface of the upper cavity (4) is provided with threads; the upper cavity (4) is fixedly connected in the main body (1) through threads; a first through hole is formed in the side wall of the upper cavity (4); a first fixing groove is formed in the inner side surface of the main body (1); the first through hole corresponds to the first fixing groove; an electromagnet I (41) is arranged in the upper cavity (4); an extension rod I (411) of the electromagnet I (41) can be inserted into the fixing groove I through the through hole I; the first extension rod (411) of the first electromagnet (41) keeps in an extension state in a normal state; the first extension rod (411) is made of plastic materials; a thin metal wire is arranged in the first extension rod (411); the fine metal wire is electrically connected with a processor unit in the electronic module (7); the upper end of the upper cavity (4) is tightly attached to the lower surface of the upper cover (2); a second sealing ring (44) is arranged between the main body (1) and the upper cover (2); the inner side surface of the upper cavity (4) is uniformly provided with a first clamping groove (13) at the same height; and a second clamping groove (21) is uniformly formed in the edge position of the upper cover (2).

4. The internet of things and blockchain based metering device of claim 3, wherein: the upper end of the outer side surface of the upper cavity (4) is provided with an annular groove; the lower surface of the upper cover (2) is provided with an inner layer plate (22) and an outer layer plate (23); the diameter of the inner layer plate (22) is smaller than that of the outer layer plate (23); a gap is formed between the inner layer plate (22) and the outer layer plate (23); the upper end of the upper cavity (4) is inserted into a gap between the inner plate (22) and the outer plate (23); the outer layer plate (23) and an annular groove formed in the upper end of the outer side surface of the upper cavity (4) are mutually wedged; the outer diameter of the outer layer plate (23) is the same as that of the upper cavity (4); the upper end of the inner side surface of the upper cavity (4) is provided with threads; the outer side surface of the inner-layer plate (22) is provided with threads; the inner layer plate (22) is fixed on the inner side of the upper cavity (4) through threads; the direction of the threads on the inner side surface of the upper cavity (4) is opposite to that of the threads on the outer side surface of the upper cavity (4); a second through hole is formed in the inner layer plate (22); the second through hole penetrates through the outer layer plate (23); a second fixing groove is formed in the inner side wall of the main body (1); the second fixing groove corresponds to the second through hole; a second electromagnet (42) is arranged in the upper cavity (4); a second extension rod (421) of the second electromagnet (42) can penetrate through the second through hole to be inserted into the second fixing groove; the second extension rod (421) of the second electromagnet (42) keeps an extension state in a normal state; the second extension rod (421) is made of plastic materials; a fine metal wire is arranged in the second extension rod (421); the fine metal wire is electrically connected with a processor unit in the electronic module (7); and a first sealing ring (43) is arranged between the outer layer plate (23) and the upper cavity (4).

5. The internet of things and blockchain based metering device of claim 1, wherein: a vertical cylinder (6) is arranged in the middle of the bulge (5); the vertical cylinder (6) is hollow; a rotating ring (61) is rotatably arranged in the vertical cylinder (6); a unidirectional inclined groove (611) is formed in the upper end periphery of the side face of the rotating ring (61); a plurality of reeds (612) are fixedly arranged on the inner wall of the vertical cylinder (6); the reed (612) can enter the unidirectional inclined groove (611); a rotating rod (62) is rotatably arranged in the vertical cylinder (6); the rotating rod (62) penetrates through the rotating ring (61), and the rotating rod and the rotating ring can rotate mutually; the lower end of the rotating rod (62) is positioned in the bulge (5); the lower end of the rotating rod (62) is provided with a transverse rod; the rotating rod (62) is not in contact with the rotating disc (51); a stop lever (57) is arranged on the upper surface of the rotary disc (51); the gear lever (57) is in contact with the transverse lever; the upper end of the rotating ring (61) is provided with a sliding claw (63); the upper end of the rotating rod (62) is provided with a transverse pushing rod; the push rod is positioned in the gap of the sliding claw (63); a third magnetic block (622) is arranged at the upper end of the rotating rod (62); a third sensor (64) is arranged at the top of the vertical cylinder (6); the sensor three (64) is electrically connected with a processor unit in the electronic module (7); and the third sensor (64) is a Hall sensor.

6. The internet of things and blockchain based metering device of claim 1, wherein: a plastic layer is arranged on the upper surface of the upper cover (2); a signal antenna is arranged in the plastic layer; the signal antenna is electrically connected with a processor unit in the electronic module (7); and the signal antenna is connected with the NB-IOT unit after being transferred by the processor unit.