CN111447585A

CN111447585A - Internet of things intrinsic safety rescue watch capable of being detected through fast networking and design method

Info

Publication number: CN111447585A
Application number: CN202010407371.7A
Authority: CN
Inventors: 陈骋; 李延富; 孙晓东; 邹晓旭; 白雪; 刘小菊; 冯智鹏; 刘宇; 邰伟卫; 祝启; 花铭池; 孙娜; 曹鹏; 朱明亮; 赫广杰; 王国辉; 侯君卫; 游建祥; 李政
Original assignee: Shenyang Coal Science Institute Co ltd
Current assignee: Shenyang Coal Science Institute Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2020-07-24

Abstract

An Internet of things intrinsic safety rescue watch with a fast networking function and capable of being detected comprises a screen, a shell and a core assembly; the shell comprises an upper cover plate, a lower cover plate and a middle frame; the movement assembly comprises a main board and a heart rate blood pressure board; the front surface of the screen is embedded into a frame groove of the upper cover plate, and the chip is connected with a connecting seat on the mainboard; the core assembly is formed by connecting a heart rate blood pressure plate and a main board through a half-cut hole soldering tin connecting point. The design method of the Internet of things intrinsic safety rescue watch with the rapid networking capability is characterized in that watch hardware is designed according to functions, then module programs are compiled, and finally the whole machine programs are optimized; and the early warning information identification of the equipment is realized by programming the network and the early warning information is shared with the watch. The invention has the advantages that: the system has the functions of monitoring the heart rate and the blood pressure and alarming the abnormal vital signs, and realizes attendance checking of personnel. Through bluetooth MESH function, also can realize with wifi MESH, when the circuit is pounded the fracture in the pit through throwing into the wrist-watch with the network is expanded fast, realize the quick network deployment rescue of MESH.

Description

Internet of things intrinsic safety rescue watch capable of being detected through fast networking and design method

Technical Field

The invention relates to the fields of rescue equipment, mine safety, wireless intelligent safety monitoring and positioning, equipment monitoring, personnel vital sign monitoring, individual protection and occupational disease hazard, in particular to an Internet of things intrinsic safety rescue watch capable of being quickly networked and detected and a design method.

Background

At present, part of coal mines still measure the blood pressure of miners before going down the well by using a sphygmomanometer, and the vital signs of the miners cannot be monitored in real time. At present, safety guarantee equipment of miners is weak, the miners cannot sense the physical conditions of the miners before going into the well, go into the well with diseases, cannot ask for help of surrounding personnel or remind dispatching personnel on the well in time when the miners are in sudden diseases, personal accidents are easy to happen, and monitoring and early warning of vital sign states of the miners can be realized by no equipment at present;

the device for realizing centralized monitoring of equipment information, early warning of internet of things and real-time transmission to inspection personnel is lacked. The underground coal mine equipment is various, underground on-duty personnel cannot be adhered to in real time, and when the equipment is abnormal, maintenance personnel cannot timely know the early warning information of the equipment, so that the equipment is further damaged, and production is delayed. The existing equipment monitoring can only be uploaded to the well for centralized monitoring, so that the decision period is long, the effective time of equipment maintenance is prolonged, and no equipment can realize centralized monitoring of the early warning information of the equipment and transmit the early warning information to inspection personnel in real time.

When the field collapses after the disaster, the existing network mostly belongs to a single-hop network, the communication is interrupted when an individual transmission node is damaged, and no network can be used when a power supply line is broken; the power consumption of the technology is still large, the cost is high, the technology is not suitable for equipment internet of things application, base stations are mostly transmitted to a well in a wiring mode, and the base stations are easy to break after a disaster, so that secondary disaster hidden dangers are generated.

The existing coal mine safety protection equipment based on the above has the following three problems:

1) the life safety protection aspect of the miners is as follows:

① miners before going down the well can not sense their own physical condition;

② the condition of coal mine hypertension is serious, and people around the mine cannot be called for help in time when the disease is suddenly caused;

③ when the miner is in danger and asks for help by one key, the vital sign information of the miner cannot be obtained on the well.

The device capable of realizing real-time monitoring and early warning of vital sign states of miners is absent!

2) In the aspect of quick search and rescue of personnel after disaster:

① after disaster, the local base station or circuit is damaged, the communication is interrupted, the mesh network expansion can not be realized, the underground information can not be fed back and extracted in time, the rescue real-time performance is poor, and the trapped personnel can not be rescued in time;

② the base station is not powered by battery, the exposed wire end is easy to short circuit after disaster, hidden danger exists, and rescue is threatened;

③ the existing personnel are positioned, the detection error is large, and the rapid and accurate positioning and information identification of personnel can not be realized when the circuit is broken after a disaster.

3) In the aspect of perception and early warning of equipment and environmental information internet of things:

① the existing equipment can not effectively extract the equipment and environment information, when the emergency condition threatens life safety, the miners can not sense in time and deal with in advance;

② the underground equipment is various and can not be monitored in a centralized way on site, and only centralized dispatching can be carried out on the ground, and the early warning decision time is long when a problem occurs, so that the equipment is further damaged and the production is influenced;

the portable wearable product capable of monitoring the body blood pressure and the heart rate and being interconnected and intercommunicated with peripheral equipment is lacked, meanwhile, once mine accidents occur, communication can be guaranteed, the network can be easily expanded, the stability and the safety can be realized in the communication technology, and the portable wearable product capable of supplying power to the lithium battery base station with low power consumption and data transmission cannot be influenced under the condition that a mine collapses.

At present, the prior art can ensure the life safety of miners to a certain extent, but the prior art also has a plurality of problems which cannot be solved in the three aspects of emergency rescue, the life safety monitoring of the miners and the sensing and early warning of environmental information and internet of things. The system is partially paralyzed or the equipment is powered off, so that the search and rescue cannot be accurately detected; miners cannot early warn and quickly ask for help in time when encountering sudden diseases and environmental or equipment threats; when seeking help by one key, a dispatcher cannot acquire vital signs of miners and the dispatching arrangement is influenced; the rescue workers and the person to be rescued can not get in contact in time.

Disclosure of Invention

The invention aims to solve the technical problem that the existing coal mine safety protection equipment is difficult to solve and overcome the defects of the prior art, provides an Internet of things intrinsic safety rescue watch with a function of fast networking and being capable of being detected, can change passive rescue into active rescue calling, has the functions of Internet of things perception early warning, vital sign monitoring and fast networking, has important significance for guaranteeing the life safety of operating miners, and particularly provides the Internet of things intrinsic safety rescue watch with the function of fast networking and being capable of being detected and a design method.

The invention provides an Internet of things intrinsic safety rescue watch capable of realizing fast networking and being detected, which is characterized in that: the Internet of things intrinsic safety rescue watch with the fast networking function and capable of being detected comprises a screen 500, a shell 700, a movement assembly 800, a watchband 697 and a battery 900;

wherein: the housing 700 comprises an upper cover plate 701, a lower cover plate 699 and a middle frame 702; the movement assembly 800 comprises a main board 600 and a heart rate blood pressure board 601; the main board 600 includes a positioning hole 603, a button 604, and a connecting seat 606; the front surface of the screen 500 is embedded into a frame groove of the upper cover plate 701, the back surface of the screen is bonded with a glass panel with gum, and a chip is connected with a connecting seat 606 on the mainboard 600; the movement assembly 800 is formed by connecting a heart rate blood pressure plate 601 and a main board 600 through a half-cut hole solder connection point 602; the battery 900 is placed between the movement assembly 800 and the screen 500, and the positive and negative electrodes are connected to the main board 600; watchband 697 is connected with upper cover plate 701 through watch shaft 698, upper cover plate 701 is connected with lower cover plate 699 by center frame 702, movement assembly 800 is fixed with watch lower cover plate 699 through four screw holes 704.

The Internet of things intrinsic safety rescue watch with the fast networking function and capable of being detected takes a core data processing unit 6 as a control core, and is electrically connected with a battery and protection unit 8, an SOS alarm interaction unit 4, a low-power-consumption power supply management unit 7, a personnel motion monitoring unit 5, a man-machine interaction unit 3, a Mesh network and Bluetooth transmission communication unit 1, and a PPG and ECG heart rate and blood pressure resolving and vital sign monitoring module 2;

wherein: the PPG and ECG heart rate and blood pressure resolving and vital sign monitoring module 2 adopts a photoelectric pulse sensor and a biological electrocardio sensing module to realize the detection of one path of ECG and one path of PPG signals, processes the electrocardiogram pulse signals by combining an electrocardio data SDK algorithm base on the basis of a wave velocity method, and transmits data to monitor the well;

the Mesh network and Bluetooth transmission communication unit 1 consists of a Bluetooth B L E module or a radio frequency singlechip Bluetooth part in a core data processing unit, an ESP32 Bluetooth WIFI module, an antenna and a science and university communication fly voice module;

the personnel movement monitoring unit 5 monitors the posture and movement of personnel through an acceleration sensor 51 and a gyroscope sensor 52, and can analyze the activity condition of the personnel through data messages;

the man-machine interaction unit 3 can operate the watch through a key touch screen, and can realize issuing information broadcast reception and uploading one-key help seeking information by combining the SOS alarm interaction unit 4;

the low-power-consumption power supply management unit 7 consists of a functional module starting control 71, a no-operation detection circuit 72 and a charging monitor 73;

the function module starting control 71 circuit can realize that each module supplies power and realize the power supply control of the function module through MOS, and the no-operation detection 72 can automatically close the screen backlight after the no-key operation is carried out for a certain time through the circuit, thereby saving energy; the charging monitoring 73 circuit can realize continuous monitoring of the battery voltage and indicate whether to access the charger or not and display the charging identifier through software;

the function module starting control circuit can open or close the PPG and ECG heart rate and blood pressure calculation set vital sign monitoring module 2, the personnel movement monitoring unit 5 and the Mesh and Bluetooth transmission communication unit 1 through menu operation, namely, each function module is started according to the current requirement and is configured into watches with different functions;

the battery and protection unit 8 is composed of a lithium manganate battery core 81, a dual protection plate 82 and a glue sealing shell 83, wherein the glue sealing shell 83 is designed to meet the intrinsic safety requirement and is not electrically connected with the mainboard;

the battery protection unit 8 adopts a built-in MOSFET lithium battery protection IC to realize the protection of overcharge, discharge overcurrent, charge overcurrent, overdischarge and short circuit of the battery;

the UHF passive attendance checking unit 9 is realized by an antenna 91 and a UHF RFID chip 92 through a PCB binding process or a soft PCB binding process; the UHF RFID chip can adopt an RFID chip of American Italian technology company or an RFID related chip of American English-frequency-Jack; the unit is in no-power connection with other units and adopts passive power supply.

The Internet of things intrinsic safety rescue watch capable of being detected by fast networking comprises a detected module;

the Bluetooth and Bluetooth mesh or wifi and wifi mesh or L ora and L ora mesh network transmission unit 906 has the functions of acquiring vital sign information such as heart rate and blood pressure of a person wearing the Internet of things intrinsic safety rescue watch which is capable of being fast networked and detected through mesh connection, realizing active detection and active information identification, enabling rescue personnel and a person to be rescued to perform voice interaction or upload information and also identifying and uploading detected passive information through a mesh network, and the man-machine interaction unit 901 can send broadcast dialogue information to surrounding people through a broadcast detection mode.

The Internet of things intrinsic safety rescue watch with the fast networking capability to be detected has the functions of acousto-optic search and rescue and MESH fast networking;

the watch has a quick ad hoc network function by programming the core data processing unit 6, and signals comprise heart rate and blood pressure information of personnel and a set energy value. When a disaster occurs, rescue workers monitor peripheral Bluetooth information by carrying detection equipment, identity recognition of miners and vital sign parameter checking are achieved, the distance and the direction are estimated through received energy values, and rapid search and rescue of the workers are achieved; the watch can also select a mesh networking function to realize one-key help seeking, and when the underground network is broken down, the mesh network is rapidly expanded by putting in watch nodes, so that the underground and aboveground rapid networking is realized. The Bluetooth 5.0 transmission theoretical distance can reach 300 meters, and the positioning accuracy can be within 1 meter by combining with the RSSI signal strength, so that the device is suitable for being used underground. Through binding the passive RFID wafer on the PCB board, through PCB antenna design, increase a plurality of via holes, improve the sensitivity of signal reception direction, combine highly integrated single-chip scheme. The module is embedded into a watch or other equipment, power supply is not needed, personnel information can be written into a memory of the module in advance, and the problem that the miners cannot be detected and rescued when the existing equipment is powered off and the condition is severe is solved.

The Internet of things intrinsic safety rescue watch with the fast networking function and capable of being detected is provided with an attendance checking module, an ultrahigh frequency UHF passive RFID tag is placed in the watch, the diameter of the ultrahigh frequency passive RFID tag is 1cm or the rectangular shape is 0.6 cm by 1cm, the ultrahigh frequency passive RFID tag is embedded into the watch, the ultrahigh frequency passive RFID tag induces an ultrahigh frequency 915M RFID reader-writer, the coded information of people written in the tag in advance can be identified by swiping the card within the range of 3cm, and the coded information is used for checking attendance by combining software.

The Internet of things intrinsic safety rescue watch with the fast networking function and capable of being detected is provided with an attendance checking module, and is realized by combining an NFC function with a Bluetooth single chip microcomputer and an antenna.

The IOT intrinsic safety rescue watch with the fast networking function and capable of being detected is internally provided with an anti-metal tag, the tag is small in size, can be anti-metal, can also be an RFID electronic tag adhesive UHF tag, can also realize the NFC card function by combining an NFC anti-metal sticker with an MCU, and is matched with an NFC reader to realize the attendance function.

A design method of an Internet of things intrinsic safety rescue watch capable of being detected by fast networking is characterized by comprising the following steps: firstly, designing watch hardware according to functions, then compiling module programs, and finally optimizing the whole machine programs; in the aspect of hardware, firstly, component and sensor type selection is carried out according to the functions of a core board and the requirements of intrinsic safety and low power consumption; designing a core board circuit schematic diagram and a vital sign detection circuit schematic diagram by using the AultiumDesigner software, and performing circuit optimization in the comprehensive evaluation of the charging cut-off voltage and the discharging cut-off voltage of the battery and the standby condition of the circuit; after the circuit is designed, the PCB wiring is carried out according to the size of a board in a laminated graph, and because the size of the board is small, 8-layer boards are adopted for PCB design and after design, the PCB is subjected to surface mounting processing;

the method comprises the steps of extracting a sample plate, compiling programs according to various functional modules, realizing a passive UHF small-area detection, search and rescue and positioning function by combining software programming, realizing equipment early warning information identification by B L E Bluetooth mesh networking programming and sharing early warning information with a watch, realizing heart rate and blood pressure data extraction by programming and improving detection data precision by combining a certain algorithm, optimizing the whole machine program after realizing the functions of the modules, comprehensively considering the real-time performance of various realization targets, and planning to adopt a Free Free RTOS real-time operating system with the number of applications ranked first at present to design a program framework so as to finally complete the software and hardware functions of the watch;

the research on the double-protection explosion-proof battery and the electric quantity evaluation method thereof comprises the following steps:

the battery consists of a double protection plate and a battery core; firstly, selecting types of usable lithium manganate or lithium iron phosphate cores according to the requirements of the coal industry, wherein the existing battery cores are difficult to find due to the small size of the battery for the watch, and the mass production is ensured by considering the mould, the processing period and the minimum initial amount in the type selection;

after the battery core is selected, through research and test on the SOC of the battery, the optimal discharge threshold value of the battery and the energy capacity of the high-energy storage battery are determined, and then key parameters of voltage limiting, current limiting, discharge stopping and charge stopping of the battery dual protection boards are designed; the battery dual protection board is designed autonomously by adopting a four-layer board, after a current battery core or a customized battery core in the market is found, the battery is assembled, and finally, the whole battery is subjected to explosion suppression and performance test;

the laminated watch is constructed and designed in a sealing, damping and lightweight mode:

the design of the shell is carried out by comparing zinc alloy and plastic materials with the processes of oil injection, electroplating and the like; after materials are selected, the mechanical structure and the waterproof structure of the watch are fully considered, and then SolidWork is used for carrying out structural design and final laminated structural design of each part of the 3D shell; finally, the structure design of circuit board size, battery size and screen fixation is carried out, and the structure of a charging interface is also designed;

the design of the shell needs to consider sealing, shock absorption and lightweight design, after the shell is designed, 3D printing, electroplating and oil spraying are carried out to watch the actual effect of the shell, parts such as a circuit board, a screen, a battery, a cover plate and a button are trial-installed according to a laminated structure, and a charging interface is tested; if the parts are unstable in fixation or poor in contact, improving local design, if the hierarchical structure is inconvenient to produce and install, adjusting, and performing 3D printing trial assembly after improvement until an actually-desired effect is achieved; after the design of the drawing is finished, a mold manufacturer is found, the processing conditions are communicated, mold opening is carried out according to the production process, the shell is modified according to the process conditions of the manufacturer if a local problem exists, mold opening is carried out after modification, and trial assembly and plate setting are carried out after the mold is opened.

By adopting the design of a double protection circuit, because the device is used in the underground coal mine, the battery protection requirement needs to meet the requirements of standards GB 3836-. The charger has the functions of single battery overcharge voltage protection, single battery overdischarge voltage protection and charging overcurrent protection, and when the charger has the function of charging overcurrent protection, the product does not have the functions of discharge overcurrent double protection and output short circuit protection. The design method comprises the steps that a multi-strategy low-power-consumption graded impact-resistant energy-saving design scheme is adopted, in order to prevent overlarge power supply impact caused by capacitance short circuit at the starting moment of the watch, the watch is designed to be graded in starting, namely, power is firstly supplied to a core processing unit, and a single chip microcomputer is started to operate stably and then a heart rate and blood pressure calculation unit, a screen and a six-axis acceleration unit are started; in order to save energy, the core data processing unit selects nRF52832 Soc, a Cortex-M4F inner core is adopted, and a Balun chip is arranged in the core data processing unit, so that the core data processing unit is smaller in size and lower in power consumption;

the MESH fast networking transmission unit and the personnel detection unit can be realized only by matching the Soc with an external antenna RF, and the sensitivity of the system is-96 dBm; the chip integrates the functions of a single chip microcomputer and Bluetooth, and a Bluetooth chip does not need to be selected again for Bluetooth design, so that the space is saved; a single-chip multifunctional low-power solution is realized; when the watch is used for rescue detection or quick networking, corresponding functions can be opened through software, and different functional configurations can be opened through different applications; in order to adapt to different occasions of coal mines, a vibration alarm unit is added besides an acousto-optic circuit, an independent 3-way controllable alarm is adopted, when the watch is used for equipment inspection, the controller is configured to only open vibration and close acousto-optic;

the PPG and ECG heart rate and blood pressure calculating unit is designed to realize the heart rate and blood pressure calculating unit; the heart rate and blood pressure monitoring adopts a photoelectric pulse sensor and a bioelectricity sensing sensor to realize the detection of one path of ECG and one path of PPG signals; the blood pressure measurement technology combining ECG and PPG is that the blood pressure is estimated by using the time interval between the transmission of the same arterial pulse wave from an electrocardio R wave to a PPG characteristic point as PPT; as long as the elastic modulus of the blood vessel wall remains constant, the variation of the systolic pressure can be represented by a high-frequency component, wherein the high-frequency component is calculated by taking the electrocardio R wave as a starting point to the time interval PTT of a PPG characteristic point, and the low-frequency component is systolic pressure data measured intermittently by auscultation or oscillometry; the high frequency components are combined with the low frequency components to calculate the systolic pressure. The watch can also select a mesh networking function to realize one-key help seeking, and when the underground network is broken down, the mesh network is rapidly expanded by putting in watch nodes, so that the underground and aboveground rapid networking is realized. The Bluetooth 5.0 transmission theoretical distance can reach 300 meters, and the positioning accuracy can be within 1 meter by combining with the RSSI signal strength, so that the device is suitable for being used underground. Through binding the passive RFID wafer on the PCB board, through PCB antenna design, increase a plurality of via holes, improve the sensitivity of signal reception direction, combine highly integrated single-chip scheme. The module is embedded into a watch or other equipment, power supply is not needed, personnel information can be written into a memory of the module in advance, and the problem that the miners cannot be detected and rescued when the existing equipment is powered off and the condition is severe is solved.

The watch mainly controls the core by 6 bits of a core data processing unit, and an electric connection battery and protection unit 8, an SOS alarm interaction unit 4, a low-power consumption power supply management unit 7, a personnel movement monitoring unit 5, a man-machine interaction unit 3, a Mesh network and Bluetooth transmission communication unit 1, a PPG and ECG heart rate and blood pressure resolving and vital sign monitoring module 2 are connected. The UHF passive rescue positioning and passive attendance checking unit 9 is in non-electric connection with other units and adopts passive power supply. The functions of each module of the watch are designed based on the design ideas of low power consumption, high reliability, simple operation, convenience and practicability.

The working principle is as follows:

the Internet of things intrinsic safety rescue watch and the peripheral equipment are interconnected and intercommunicated, the rapid networking can be detected, the active bidirectional positioning and rapid networking functions are realized, communication can be guaranteed once mine disasters occur, rescuers can detect rescue equipment by carrying person searching rescue, peripheral Bluetooth information is monitored, identity recognition and vital sign parameter checking of miners are realized, the distance and the direction are estimated by receiving energy, and rapid searching and rescuing of the staffs are realized. Under the condition of no electricity, the watch can also realize one-key help seeking through a mesh networking transmission function, can quickly lock a person to be saved in the detection fence, and when the underground network is paralyzed, the extension of the mesh network is realized in a mode of putting nodes into the detection fence, so that the underground network recovery is realized on the well. And personnel information is sent to the detector in time, so that the rescue efficiency is improved.

The active search and rescue using method comprises the following steps:

the rescue workers carry the watch and send out sound and light alarm through broadcasting the information of the data base of the workers in the well, when the watch carried by the miners is electrified, the rescuers can accurately find out whether the surrounding personnel to be rescued exist or not according to the sound.

Use and operation: charging on the well. When the electric quantity of the battery is confirmed to be sufficient and the watch state is good, the following operations are carried out:

1) opening: and in the power-off state, the power-on is realized by long-pressing the first button on the side surface. And 6S, automatically dimming the screen after no operation is performed on any interface, and turning off the screen after no operation is performed for 2S.

2) Closing: in the power-on state, the interface prompt of the first button on the long-time pressing side indicates whether to power off, and the button touch determines whether to power off.

3) Switching: and in a starting state, the middle button is pressed for a short time to switch to a time/date display picture, the first button is pressed for a short time to realize a numerical value increasing function, the third button is pressed for a short time to realize a numerical value decreasing function, and the middle button is pressed for a long time on any menu picture to realize the return to the main menu interface.

And the related function sub-interfaces are provided with use prompts, so that the man-machine interaction is convenient.

The technology of mesh networking, Internet of things environment sensing, rapid networking, vital sign monitoring and the like is researched, and the Internet of things intrinsic safety rescue watch with the advantages that the rapid networking can be detected is developed. The system has the functions of one-key help seeking in distress, heart rate and blood pressure monitoring, on-well monitoring, quick networking and environmental internet of things early warning. The vital signs of miners can be monitored in real time, and the problems that coal mine operators cannot be timely rescued or early warned due to self diseases or environmental threats and equipment threats underground, and line paralysis after disasters causes the problems of incapability of detection, quick positioning and rescue and the like are solved. Further improving the life safety guarantee of the miners.

1) The Mesh technology and the UHF passive attendance technology are applied to the watch, and can solve the problems existing in the application of the technologies in the underground coal mine:

2) each watch is a transmission node, data can be transmitted and received in a multi-hop non-line-of-sight mode, information transmission such as vital signs and the like is not affected by damage of individual watch nodes, and after a disaster, people to be saved can be quickly networked by only putting the watch nodes into the system, and voice and video communication can be achieved.

3) The passive attendance technology can detect personnel and identify personnel information under the condition that the watch is not electrified. After key technologies are researched, → product software and hardware, an explosion-proof battery and a mechanical laminated structure are designed → the functions of one-key help seeking, vital sign monitoring, on-well monitoring, quick networking, Internet of things environmental information perception early warning and the like are realized → finally, complete machine assembly → performance testing → improvement shaping → the development of the Internet of things type life safety aviation protection rescue watch is completed.

The innovation points are as follows: the Internet of things intrinsic safety rescue watch with the rapid networking function and the detectable networking function has the Internet of things interconnection function, the vital sign monitoring function, the rapid networking function and the environmental information early warning function, and is the initiative in the field of coal mine wearable.

① provides a wearable watch terminal for mining based on mesh networking, which has the functions of blood pressure and heart rate monitoring, post-disaster active bidirectional positioning and quick networking, and solves the problems that the miner can not quickly detect, position and rescue the sudden diseases and post-disaster line paralysis caused by hypertension;

② the watches are convenient to network, after a disaster, several watches can be put into the system and automatically access to the Mesh network as AP nodes, the network coverage is expanded to cover a collapsed tunnel, and the problem of breaking communication when the existing base station collapses is solved;

③ the damage of partial watch does not affect the smooth circuit, the communication circuit is more robust, the watch is good and can transmit the vital sign state of the miner;

④, the monitoring of the physical signs of miners can be realized, and rescue workers can be more reasonably scheduled on abnormal wells;

⑤ after disaster, the mine collapse can be positioned in two directions quickly to assist rescue, the buried watch is networked by using the watch as AP node, and the sound and light alarm of the far-end watch can be started by broadcasting, so as to position quickly;

⑥ can make voice, which is convenient for communication between the rescue personnel and the person to be rescued as well as between the rescue personnel and the person to be rescued.

The invention has the advantages that:

according to the Internet of things intrinsic safety rescue watch capable of being rapidly networked and detected, the watch has low power consumption and is standby for 48 hours; the device has the functions of on-well monitoring of heart rate and blood pressure transmission and acousto-optic alarm of abnormal vital signs; the system has the functions of equipment and internet of things, can move and patrol peripheral equipment and prompt information and alarm information of an environmental sensor, and can upload vital sign data (body temperature, heart rate and blood pressure) of a miner per se through a wireless gateway of fixed equipment. The voice rescue system has the functions of voice rescue linkage and quick networking. When some nodes are damaged due to various accidents and self problems, many-to-many multi-hop transmission can be realized, individual damage does not influence network expansion, and a wireless mesh network can be led out by throwing a watch, so that rescue is facilitated. The watch has the advantages that the watch is implanted with the label into the watchband or the shell, so that the function of detecting the power failure of the watch is realized; the reading of the relevant information of the built-in personnel is realized; can combine the host computer to realize personnel's attendance through passive label, through bluetooth mesh function, the circuit is pounded when breaking down in the pit and is expanded the network fast through dropping into the wrist-watch, realizes the quick network deployment rescue of mesh, also can realize through wifimesh.

Drawings

The invention is described in further detail below with reference to the following figures and embodiments:

fig. 1 is an overall schematic diagram of an internet-of-things intrinsic safety rescue watch with fast networking capability to be detected;

FIG. 2 is a rear view of an IOT intrinsic safety rescue watch with fast networking detection;

FIG. 3 is a block diagram of a core data processing unit and peripheral circuitry;

FIG. 4 is a schematic diagram of a UHF passive attendance unit;

FIG. 5 is a schematic diagram of a PCB antenna;

FIG. 6 is a front view of a motherboard layout;

fig. 7 is a rear view of the motherboard layout.

Detailed Description

Examples

The invention provides an Internet of things intrinsic safety rescue watch capable of realizing fast networking and being detected, which is characterized in that: the Internet of things intrinsic safety rescue watch with the fast networking function and capable of being detected comprises a screen 500, a shell 700, a movement assembly 800, a watchband 697 and a battery 900; wherein: the housing 700 comprises an upper cover plate 701, a lower cover plate 699 and a middle frame 702; the movement assembly 800 comprises a main board 600 and a heart rate blood pressure board 601; the main board 600 includes a positioning hole 603, a button 604, and a connecting seat 606; the front surface of the screen 500 is embedded into a frame groove of the upper cover plate 701, the back surface of the screen is bonded with a glass panel with gum, and a chip is connected with a connecting seat 606 on the mainboard 600; the movement assembly 800 is formed by connecting a heart rate blood pressure plate 601 and a main board 600 through a half-cut hole solder connection point 602; the battery 900 is placed between the movement assembly 800 and the screen 500, and the positive and negative electrodes are connected to the main board 600; a watchband 697 is connected with an upper cover plate 701 through a watch shaft 698, the upper cover plate 701 is connected with a lower cover plate 699 through a middle frame 702, and a movement assembly 800 and the watch lower cover plate 699 are fixed through four screw holes 704; the fixed post of fixed department penetrates the locating hole and holds level with core assembly upper surface, and is fixed with screw in, and this design can avoid fixed post expansion crack, solves the conventional product and puts the board on the post fixed mode and lead to the wrist-watch double-screw bolt to twist the condition that just damages several times.

The Internet of things intrinsic safety rescue watch with the fast networking function and capable of being detected is characterized in that a core data processing unit 6 is used as a control core, a battery and protection unit 8, an SOS alarm interaction unit 4, a low-power-consumption power supply management unit 7, a personnel movement monitoring unit 5, a man-machine interaction unit 3, a Mesh network and Bluetooth transmission communication unit 1, a PPG and ECG heart rate blood pressure calculation and vital sign monitoring module 2 are electrically connected, wherein the PPG and ECG heart rate blood pressure calculation and vital sign monitoring module 2 adopts a photoelectric pulse sensor and a biological electrocardio sensing module to realize detection of one path of ECG and one path of PPG signals and adopts a wave velocity method as a basis, and combines an electrocardio data SDK algorithm base to process the electrocardio pulse signals, the Mesh network and Bluetooth transmission communication unit 1 is composed of a Bluetooth B L E module or a radio frequency Bluetooth part in the core data processing unit, an ESP32 Bluetooth WIFI module, an antenna and a science communication voice module, the Mesh network can be composed of Bluetooth, a Mesh network and a Mesh network can be used for realizing data transmission through WIFI, other Mesh network, after other pieces of information are sent to other pieces, the watch, the Mesh network can be conveniently connected, and the Mesh network can be conveniently positioned, and the Mesh network can be conveniently sent to a computer, so that a plurality of Mesh network can be conveniently sent to a plurality of Mesh network can be connected, and a computer can be conveniently sent to a Mesh network, and a.

The person detection rescue method is that a watch sends out Bluetooth B L E broadcast signals every second, the signals comprise heart rate and blood pressure information of persons and set energy values, when a disaster happens, rescuers monitor peripheral Bluetooth information by carrying detection equipment to realize identity identification of miners and check vital sign parameters, and the distance and the direction are estimated by receiving energy to realize quick search and rescue of the persons.

The low-power-consumption power supply management unit 7 is composed of a function module start control 71, a no-operation detection circuit 72, and a charge monitor 73. The function module starting control 71 circuit can realize power supply of each module, realize power supply control of the function module through MOS, and the no-operation detection 72 circuit can realize automatic closing of screen backlight after no-key operation for a certain time, thereby saving energy. The charge monitor 73 circuit can continuously monitor the battery voltage and indicate whether the charger is connected or not and display the charge identifier through software.

The function module starting control circuit can open or close the PPG and ECG heart rate and blood pressure calculation set vital sign monitoring module 2, open and close the personnel movement monitoring unit 5, open and close the Mesh network and the Bluetooth transmission communication unit 1 through menu operation, namely, each function module is started according to the current requirement, and the watch with different functions is configured.

The battery and protection unit 8 is composed of a lithium manganate battery core 81, a dual protection plate 82 and a glue sealing shell 83, wherein the glue sealing shell 83 is designed to meet the requirement of intrinsic safety and is not electrically connected with the main board.

The battery protection unit 8 adopts a built-in MOSFET lithium battery protection IC to realize the protection of overcharge, discharge overcurrent, charge overcurrent, overdischarge and short circuit of the battery.

The UHF passive attendance unit 9 is implemented by the antenna 91 and the UHF RFID chip 92 through a PCB bonding process or a flexible PCB bonding process. The UHF RFID chip can be an American Italian technologies RFID chip or an American Invitrogen RFID-related chip. The unit is in no-power connection with other units and adopts passive power supply.

This module can type personnel's information in advance, realizes personnel's information attendance through the UHF RFID read write line, and its advantage is in that the size is little, imbeds in the wrist-watch, and is multi-functional in an organic whole. The volume of the wireless sensor is small without a large coil, which is equal to 1/20 of the volume of the traditional 2.4G RFID, and the wireless sensor can be embedded into any equipment, and the module can realize the detection and positioning through a passive search and rescue module.

The Internet of things intrinsic safety rescue watch with the fast networking function and capable of being detected is provided with an attendance checking module, an ultrahigh frequency UHF passive RFID tag is placed in the watch, the diameter of the ultrahigh frequency passive RFID tag is 1cm or the rectangular shape is 0.6 cm by 1cm, the ultrahigh frequency passive RFID tag is embedded into the watch, the ultrahigh frequency passive RFID tag induces an ultrahigh frequency 915M RFID reader-writer, the coded information of people written in the tag in advance can be identified by swiping the card within the range of 3cm, and the coded information is used for checking attendance by combining software. Inductive power supply and energy conservation, which are not done at present.

the Bluetooth and Bluetooth mesh or wifi and wifi mesh or L ora and L ora mesh network transmission unit 906 has the functions of acquiring vital sign information such as heart rate and blood pressure of a person wearing the Internet of things intrinsic safety rescue watch which is capable of being detected by fast networking through mesh connection, realizing active detection and active information identification, and also being capable of carrying out voice interaction on rescue personnel and a person to be rescued through a mesh network or uploading information and also being capable of identifying and uploading detected passive information.

The human-computer interaction unit 901: broadcast dialogue information can be sent to surrounding people by a broadcast detection mode, for example: as soon as it comes, and displays the sender name. Information to be sent is preset in the detector and the detected equipment, and information codes such as information values in the sent messages are used for communicating with each other.

The method is used for realizing the information transmission between the devices to replace the fussy function of key editing Chinese under the complex environment. And recording the main information in advance.

after the functions of the modules are realized, the whole machine program is optimized, the real-time performance of each realization target is comprehensively considered, the program framework design is carried out by adopting a Free RTOS real-time operating system with the application quantity arranged in the first at present, and finally the software and hardware functions of the watch are finished;

The detected information module core processor 908 adopts an Italian technology Higgs IC series passive RFID chip or other manufacturer passive RFID chips, adopts an RFID UHF frequency band, and is bound on a PCB antenna board or a flexible PCB antenna through a binding processing technology; the detected information module core processor 909 antenna 910 adopts a PCB antenna or a PCB flex cable; the detected information module core processor 908 improves the sensitivity of the signal receiving direction by designing an antenna on a flexible flat cable or a PCB and adding a plurality of via holes 912 on the PCB, which is not found at present and is an innovation point; the chip of the antenna 910 directly bonds the wafer on the PCB board through the bonding process; the module can be embedded into any product, does not need to be powered, can write personnel information into a memory of the module in advance, and can transmit the information when the detector detects the personnel information.

The working principle is as follows: the Internet of things intrinsic safety rescue watch capable of being detected by fast networking and peripheral equipment are interconnected and communicated, once a mine disaster happens, communication can be guaranteed, rescue workers monitor peripheral Bluetooth information by carrying rescue detection rescue equipment, the identity recognition and vital sign parameter checking of miners are achieved, the distance and the direction are estimated by receiving energy, and the rapid search and rescue of the workers are achieved. Under the condition of no electricity, the watch can also realize one-key help seeking through a mesh networking transmission function, can quickly lock a person to be saved in the detection fence, and when the underground network is paralyzed, the extension of the mesh network is realized in a mode of putting nodes into the detection fence, so that the underground network recovery is realized on the well. And personnel information is sent to the detector in time, so that the rescue efficiency is improved.

The active search and rescue using method comprises the following steps: the rescue workers carry the watch and send out sound and light alarm through broadcasting the information of the data base of the workers in the well, when the watch carried by the miners is electrified, the rescuers can accurately find out whether the surrounding personnel to be rescued exist or not according to the sound.

3) Switching: and in a starting state, the middle button is pressed for a short time to switch to a time/date display picture, the first button is pressed for a short time to realize a numerical value increasing function, the third button is pressed for a short time to realize a numerical value decreasing function, and the middle button is pressed for a long time on any menu picture to realize the return to the main menu interface. And the related function sub-interfaces are provided with use prompts, so that the man-machine interaction is convenient.

The technology of mesh networking, Internet of things environment sensing, vital sign monitoring and the like is researched, and the Internet of things intrinsic safety rescue watch which has the advantages that the fast networking can be detected is developed. The system has the functions of one-key help seeking in distress, heart rate and blood pressure monitoring and environmental internet of things early warning. The vital signs of miners can be monitored in real time, and the problems that coal mine operators cannot be timely rescued or early warned due to self diseases or environmental threats and equipment threats underground, and line paralysis after disasters causes the problems of incapability of detection, quick positioning and rescue and the like are solved. Further improving the life safety guarantee of the miners.

1) The Mesh technology is applied to the watch, and can solve the problems existing in the application of the technology under a coal mine:

2) each watch is a transmission node, data can be transmitted and received in a multi-hop non-line-of-sight mode, information transmission such as vital signs and the like is not affected by damage of individual watch nodes, networking with a person to be saved can be achieved only by putting watch nodes after a disaster, and voice and video communication can be achieved.

After key technologies are researched, → product software and hardware, an explosion-proof battery and a mechanical laminated structure are designed → functions of one-key help seeking, vital sign monitoring, Internet of things environmental information perception early warning and the like are realized → finally, whole machine assembly → performance test → improvement and shaping → the development of an Internet of things life safety navigation rescue watch is completed.

Claims

1. The utility model provides an thing networking intrinsic safety rescue wrist-watch that can be surveyed with fast network deployment which characterized in that: the Internet of things intrinsic safety rescue watch with the fast networking function and capable of being detected comprises a screen (500), a shell (700), a movement assembly (800), a watchband (697) and a battery (900);

wherein: the shell (700) comprises an upper cover plate (701), a lower cover plate (699) and a middle frame (702); the movement assembly (800) comprises a main board (600) and a heart rate blood pressure board (601); the main board (600) comprises a positioning hole (603), a button (604) and a connecting seat (606); the front surface of the screen (500) is embedded into a frame groove of the upper cover plate (701), the back surface of the screen is bonded with a glass panel with gum, and the chip is connected with a connecting seat (606) on the mainboard (600); the movement assembly (800) is formed by connecting a heart rate blood pressure plate (601) and a main board (600) through a half-cut hole tin welding connection point (602); the battery (900) is arranged between the machine core assembly (800) and the screen (500), and the positive electrode and the negative electrode are connected to the main board (600); the watch band (697) is connected with the upper cover plate (701) through the watch shaft (698), the upper cover plate (701) is connected with the lower cover plate (699) through the middle frame (702), and the movement assembly (800) is fixed with the watch lower cover plate (699) through four screw holes (704).

2. The internet of things intrinsically safe rescue watch with fast networking detectability according to claim 1, wherein: the Internet of things intrinsic safety rescue watch with the fast networking function and capable of being detected takes a core data processing unit (6) as a control core, and is electrically connected with a battery and protection unit (8), an SOS alarm interaction unit (4), a low-power-consumption power supply management unit (7), a personnel movement monitoring unit (5), a man-machine interaction unit (3), a Mesh network and Bluetooth transmission communication unit (1), and a PPG and ECG heart rate and blood pressure resolving and vital sign monitoring module (2);

wherein: the PPG and ECG heart rate and blood pressure resolving and vital sign monitoring module (2) adopts a photoelectric pulse sensor and a biological electrocardio sensing module to realize the detection of one path of ECG and one path of PPG signals, processes the electrocardiogram pulse signals by combining an electrocardio data SDK algorithm base on the basis of a wave velocity method, and transmits data to monitor on the well;

the Mesh network and Bluetooth transmission communication unit (1) consists of a Bluetooth B L E module or a radio frequency singlechip Bluetooth part in a core data processing unit, an ESP32 Bluetooth WIFI module, an antenna and a science and university news flying voice module;

the personnel motion monitoring unit (5) realizes the posture and motion monitoring of personnel by an acceleration sensor (51) and a gyroscope sensor (52), and can analyze the activity condition of the personnel through data messages;

the man-machine interaction unit 3 can operate the watch through a key touch screen, and can realize issuing information broadcast reception and uploading one-key help seeking information by combining with the SOS alarm interaction unit (4);

the low-power-consumption power supply management unit (7) consists of a function module starting control (71), a no-operation detection circuit (72) and a charging monitoring (73);

the function module starting control (71) circuit can realize that each module supplies power and realize the power supply control of the function module through MOS, and the no-operation detection (72) can realize that the screen backlight is automatically closed after no-key operation is carried out for a certain time through the circuit, thereby saving energy; the charging monitoring (73) circuit can realize continuous monitoring of the battery voltage and indicate whether to access the charger or not and display a charging identifier through software;

the function module starting control circuit can open or close the PPG and ECG heart rate and blood pressure calculation set vital sign monitoring module (2), the personnel movement monitoring unit (5), the Mesh network and the Bluetooth transmission communication unit (1) through menu operation, namely, all function modules are started according to the current requirements and are configured into watches with different functions;

the battery and protection unit (8) is composed of a lithium manganate battery cell (81), a dual protection plate (82) and a glue sealing shell (83), wherein the glue sealing shell (83) is designed to meet the intrinsic safety requirement and is not electrically connected with the mainboard;

the battery protection unit (8) adopts a built-in MOSFET lithium battery protection IC to realize the protection of overcharge, discharge overcurrent, charge overcurrent, overdischarge and short circuit of the battery;

the UHF passive attendance checking unit (9) is realized by an antenna (91) and a UHF RFID chip (92) through a PCB binding process or a soft PCB binding process; the UHF RFID chip can adopt an RFID chip of American Italian technology company or an RFID related chip of American English-frequency-Jack; the unit is in no-power connection with other units and adopts passive power supply.

3. The internet of things intrinsically safe rescue watch with fast networking detectability according to claim 1, wherein: the Internet of things intrinsic safety rescue watch with the fast networking function and capable of being detected comprises passive attendance;

the Bluetooth and Bluetooth mesh or wifi and wifi mesh or L ora and L ora mesh network transmission unit (906) has the functions of acquiring vital sign information such as heart rate and blood pressure of a person wearing the Internet of things intrinsic safety rescue watch which is provided with a fast networking function and can be detected through mesh connection, realizing active detection and active information identification, performing voice interaction on rescue personnel and the person to be rescued through a mesh network, or uploading information, and also identifying and uploading detected passive information, and a man-machine interaction unit (901) can send broadcast dialogue information to surrounding people through a broadcast detection mode.

4. The internet of things intrinsically safe rescue watch with fast networking detectability according to claim 1, wherein: the Internet of things intrinsic safety rescue watch with the fast networking capability to be detected has the functions of acousto-optic search and rescue and MESH fast networking;

the watch has a quick ad hoc network function by programming the core data processing unit 6, and signals comprise heart rate and blood pressure information of personnel and a set energy value. When a disaster occurs, rescue workers monitor peripheral Bluetooth information by carrying detection equipment, identity recognition of miners and vital sign parameter checking are achieved, the distance and the direction are estimated through received energy values, and rapid search and rescue of the workers are achieved; the watch can also select a mesh networking function to realize one-key help seeking, and when the underground network is broken down, the mesh network is rapidly expanded by putting in watch nodes, so that the underground and aboveground rapid networking is realized. The Bluetooth 5.0 transmission theoretical distance can reach 300 meters, and the positioning accuracy can be within 1 meter by combining with the RSSI signal strength, so that the device is suitable for being used underground. Through binding the passive RFID wafer on the PCB board, through PCB antenna design, combine highly integrated single-chip scheme. The module is embedded into a watch or other equipment, power supply is not needed, personnel information can be written into a memory of the module in advance, and the problem that the miners cannot be detected and rescued when the existing equipment is powered off and the condition is severe is solved.

5. The internet of things intrinsically safe rescue watch with fast networking detectability according to claim 1, wherein: the Internet of things intrinsic safety rescue watch with the fast networking function and capable of being detected is provided with an attendance checking module, an ultrahigh frequency UHF passive RFID tag is placed in the watch, the diameter of the ultrahigh frequency passive RFID tag is 1cm or the rectangular shape is 0.6 cm by 1cm, the ultrahigh frequency passive RFID tag is embedded into the watch, the ultrahigh frequency passive RFID tag induces an ultrahigh frequency 915M RFID reader-writer, the coded information of people written in the tag in advance can be identified by swiping the card within the range of 3cm, and the coded information is used for checking attendance by combining software.

6. The internet of things intrinsically safe rescue watch with fast networking detectability according to claim 1, wherein: the Internet of things intrinsic safety rescue watch with the fast networking function and capable of being detected is provided with an attendance checking module, and is realized by combining an NFC function with a Bluetooth single chip microcomputer and an antenna.

7. The internet of things intrinsically safe rescue watch with fast networking detectability according to claim 1, wherein: the IOT intrinsic safety rescue watch with the fast networking function and capable of being detected is internally provided with an anti-metal tag, the tag is small in size, can be anti-metal, can also be an RFID electronic tag adhesive UHF tag, can also realize the NFC card function by combining an NFC anti-metal sticker with an MCU, and is matched with an NFC reader to realize the attendance function.

8. A design method of an internet of things intrinsic safety rescue watch with fast networking detection function as claimed in claim 1, wherein the design method comprises the following steps: firstly, designing watch hardware according to functions, then compiling module programs, and finally optimizing the whole machine programs; in the aspect of hardware, firstly, component and sensor type selection is carried out according to the functions of a core board and the requirements of intrinsic safety and low power consumption; designing a core board circuit schematic diagram and a vital sign detection circuit schematic diagram by using the Aultium Designer software, and performing circuit optimization in the comprehensive evaluation of the charging cut-off voltage and the discharging cut-off voltage of the battery and the standby condition of the circuit; after the circuit is designed, the PCB wiring is carried out according to the size of a board in a laminated graph, and because the size of the board is small, 8-layer boards are adopted for PCB design and after design, the PCB is subjected to surface mounting processing;

9. The design method of the Internet of things intrinsic safety rescue watch with the capability of fast networking and detection according to claim 7, characterized in that: the detected information module core processor (908) adopts an Italian technology Higgs IC series passive RFID chip or other manufacturer passive RFID chips, adopts an RFID UHF frequency band, and is bound on a PCB antenna board or a soft PCB antenna through a binding processing technology; wherein the antenna (910) of the detected information module core processor (909) adopts a PCB antenna or a PCB flexible flat cable; the detected information module core processor (908) improves the sensitivity of the signal receiving direction by designing an antenna on a flexible flat cable or a PCB and adding a plurality of through holes (912) on the PCB, and the design is not discovered at present and is an innovation point; the chip of the antenna (910) directly bonds the wafer on the PCB board through a bonding process; the module can be embedded into any product, does not need to be powered, can write personnel information into a memory of the module in advance, and can transmit the information when the detector detects the personnel information.

10. The design method of the Internet of things intrinsic safety rescue watch with the capability of fast networking and detection according to claim 7, characterized in that: by adopting a double protection circuit design, because the device is used in a coal mine underground, the battery protection requirement needs to meet the requirements of standards GB3836-2010 and MT/T1051-; the charger has the functions of single battery overcharge voltage protection, single battery overdischarge voltage protection and charge overcurrent protection, and when the charger has the function of charge overcurrent protection, the product does not have the functions of discharge overcurrent double protection and output short circuit protection;

the design method comprises the steps that a multi-strategy low-power-consumption graded impact-resistant energy-saving design scheme is adopted, in order to prevent overlarge power supply impact caused by capacitance short circuit at the starting moment of the watch, the watch is designed to be graded in starting, namely, power is firstly supplied to a core processing unit, and a single chip microcomputer is started to operate stably and then a heart rate and blood pressure calculation unit, a screen and a six-axis acceleration unit are started; in order to save energy, the core data processing unit selects nRF52832 Soc, a Cortex-M4F inner core is adopted, and a Balun chip is arranged in the core data processing unit, so that the core data processing unit is smaller in size and lower in power consumption;

the PPG and ECG heart rate and blood pressure calculating unit is designed to realize the heart rate and blood pressure calculating unit; the heart rate and blood pressure monitoring adopts a photoelectric pulse sensor and a bioelectricity sensing sensor to realize the detection of one path of ECG and one path of PPG signals; the blood pressure measurement technology combining ECG and PPG is that the blood pressure is estimated by using the time interval between the transmission of the same arterial pulse wave from an electrocardio R wave to a PPG characteristic point as PPT; as long as the elastic modulus of the blood vessel wall remains constant, the variation of the systolic pressure can be represented by a high-frequency component, wherein the high-frequency component is calculated by taking the electrocardio R wave as a starting point to the time interval PTT of a PPG characteristic point, and the low-frequency component is systolic pressure data measured intermittently by auscultation or oscillometry; the high frequency components are combined with the low frequency components to calculate the systolic pressure.