CN210518384U - Intelligent gateway of Internet of things - Google Patents
Intelligent gateway of Internet of things Download PDFInfo
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- CN210518384U CN210518384U CN201922138007.0U CN201922138007U CN210518384U CN 210518384 U CN210518384 U CN 210518384U CN 201922138007 U CN201922138007 U CN 201922138007U CN 210518384 U CN210518384 U CN 210518384U
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Abstract
The utility model relates to the technical field of industrial Ethernet transmission, and discloses an intelligent gateway of the Internet of things with good expansibility and high intelligent degree, an intelligent sensor is used for acquiring data information of a pipeline, and a GPS (global positioning system) positioner is used for determining a positioning signal of the intelligent sensor; the RS-485 communication interface is used for transmitting data information and positioning signals, the communication end of the control circuit is connected with the RS-485 communication interface, the data information and the positioning signals are input into the control circuit through the RS-485 communication interface, the signal input end of the NB-IOT wireless circuit is coupled to the signal output end of the control circuit, the NB-IOT wireless circuit receives the data information and the positioning signals output by the control circuit, and the data information and the positioning signals are uploaded to a remote server or a client through the NB-IOT wireless circuit.
Description
Technical Field
The utility model relates to an industrial ethernet transmission technology field, more specifically say, relate to a thing networking intelligent gateway.
Background
Gateways (gateways) are also called internetwork connectors and protocol converters, and realize network interconnection above a network layer, are complex network interconnection equipment and are only used for interconnection of two networks with different high-level protocols. At present, the traditional gateway in China takes a computer as a gateway, takes a transmission function as a main part, can only carry out simple filtration, storage and transmission on transmitted data, and has the defects of high price, large volume, poor compatibility, poor expansibility, low intelligent degree and the like.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned compatibility of prior art poor, the expansibility is poor and intelligent degree low defect, provide a thing networking intelligent gateway that expansibility is good and intelligent degree is high.
The utility model provides a technical scheme that its technical problem adopted is: an intelligent gateway of the internet of things is constructed, and the intelligent gateway of the internet of things is provided with:
the intelligent sensor is arranged on one side of the bottom of the pipeline to be detected and used for collecting data information of the pipeline;
at least one GPS locator configured on one side of the smart sensor, the GPS locator for determining a positioning signal of the smart sensor;
at least one RS-485 communication interface which is connected with the intelligent sensor and the signal output end of the GPS locator and is used for transmitting the data information and the positioning signal;
the communication end of the control circuit is connected with the RS-485 communication interface, and the data information and the positioning signal are input into the control circuit through the RS-485 communication interface;
an NB-IOT wireless circuit having a signal input coupled to the signal output of the control circuit, the NB-IOT wireless circuit receiving the data information and the positioning signal output by the control circuit; and uploading the data information and the positioning signal to a remote server or a client through the NB-IOT wireless circuit.
In some embodiments, the control circuit is provided with a main control chip, and a communication end of the main control chip is in communication connection with the intelligent sensor, the GPS locator, the NB-IOT wireless circuit, and the remote server, respectively.
In some embodiments, the intelligent sensor comprises a temperature and humidity sensor and a film pressure sensor,
the temperature and humidity sensor and the film type pressure sensor are respectively arranged at every fifty meters, corners or variable diameter positions of the pipeline to be detected; wherein the content of the first and second substances,
the temperature and humidity sensor is used for acquiring the temperature and humidity value of the peripheral environment of the pipeline to be detected;
the film type pressure sensor is used for collecting the pressure value of the position where the pipeline to be detected is located.
In some embodiments, the signal output ends of the temperature and humidity sensor and the thin film pressure sensor are respectively connected with the RS-485 communication interface.
In some embodiments, the system further comprises an MBUS communication module circuit, a signal input end of the MBUS communication module circuit is connected with an output end of the main control chip, and is used for receiving the instruction data output after being demodulated by the main control chip;
the MBUS communication module circuit is in communication connection with the RSRS-485 communication interface of the meter to be measured through the RSRS-485 communication interface; and receiving the gauge head data acquired by the gauge to be tested.
In some embodiments, the signal output terminal of the MBUS communication module circuit is connected to the signal input terminal of the NB-IOT wireless circuit via the RS-485 communication interface;
and the MBUS communication module circuit transmits the header data to the NB-IOT wireless circuit and transmits the header data to the remote server or the client through the NB-IOT wireless circuit.
In some embodiments, the control circuit further comprises a crystal oscillation circuit, and the crystal oscillation circuit is connected with the crystal oscillation end of the main control chip and is used for generating oscillation frequency.
The utility model discloses an intelligent gateway of internet of things, which is provided with an intelligent sensor for collecting data information of a pipeline, and a GPS locator for determining a positioning signal of the intelligent sensor; the RS-485 communication interface is connected with the intelligent sensor and the signal output end of the GPS positioner and is used for transmitting data information and positioning signals; the communication end of the control circuit is connected with the RS-485 communication interface, and data information and positioning signals are input into the control circuit through the RS-485 communication interface; the signal input end of the NB-IOT wireless circuit is coupled with the signal output end of the control circuit, the NB-IOT wireless circuit receives the data information and the positioning signal output by the control circuit, and the NB-IOT wireless circuit uploads the data information and the positioning signal to a remote server or a client. Compared with the prior art, on one hand, the intelligent sensor is matched with the GPS positioner for use, so that the problem that whether the pipeline leaks or not can only be detected but the specific leakage position cannot be detected in the prior art can be effectively solved; on the other hand, the RS-485 communication interface and the NB-IOT wireless circuit are adopted to upload data to the server or the client, so that the use cost is reduced, the compatibility and the intelligent degree can be improved, and the problem of poor compatibility of the traditional gateway is solved.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a control circuit diagram of an embodiment of an intelligent gateway of the internet of things provided by the present invention;
fig. 2a is a circuit diagram of a part of NB-IOT wireless circuit according to an embodiment of the present invention;
fig. 2b is another circuit diagram of the NB-IOT wireless circuit according to an embodiment of the internet of things intelligent gateway provided by the present invention;
fig. 3 is a circuit diagram of a GPS locator according to an embodiment of the internet of things intelligent gateway provided by the present invention;
fig. 4 is a circuit diagram of an RS-485 communication interface according to an embodiment of the internet of things intelligent gateway provided by the present invention;
fig. 5 is a circuit diagram of the MBUS communication module circuit of an embodiment of the internet of things intelligent gateway.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a control circuit diagram of an embodiment of an intelligent gateway of the internet of things provided by the present invention; fig. 2a is a circuit diagram of a part of NB-IOT wireless circuit according to an embodiment of the present invention; fig. 2b is another circuit diagram of the NB-IOT wireless circuit according to an embodiment of the internet of things intelligent gateway provided by the present invention; fig. 3 is a circuit diagram of a GPS locator according to an embodiment of the internet of things intelligent gateway provided by the present invention; fig. 4 is a circuit diagram of an RS-485 communication interface according to an embodiment of the internet of things intelligent gateway provided by the present invention; fig. 5 is a circuit diagram of the MBUS communication module circuit of an embodiment of the internet of things intelligent gateway. As shown in fig. 1 to 5, in the first embodiment of the internet of things intelligent gateway of the present invention, the internet of things intelligent gateway mainly includes a control circuit 100, NB-IOT (Narrow Band internet of things) -circuits (200a and 200b), at least one intelligent sensor (not shown in the figure), at least one GPS locator 300, at least one RS-485 communication interface 400, and an MBUS (simple MBUS-remote meter reading system) communication module circuit 500.
The control circuit 100 is mainly composed of a main control chip U1, a crystal oscillation circuit 101, and a reset system circuit 102.
The main control chip U1 is an embedded microcontroller integrated circuit, the core size is 32 bits, the speed is 72MHz, the program memory capacity is 256KB, the program memory type is FLASH, and the RAM capacity is 48K.
The main control chip U1 starts to work under the push of the crystal oscillation circuit 101 and the reset system circuit 102, and is connected with other functional modules for communication and controls each functional module.
The intelligent sensor (not shown in the figure) has the functions of collecting, processing and exchanging information, and also has the characteristics of capability of realizing high-precision information collection through a software technology, certain programming automation capability and function diversification.
In which the smart sensor can store various physical quantities detected and process the data according to instructions to create new data. The intelligent sensors can exchange information with each other, and can self-determine data to be transmitted and complete analysis.
The intelligent sensor is configured at one side of the bottom of the pipeline to be detected (a liquid pipe and an air pipe), specifically, the intelligent sensor is arranged at every fifty meters, corners or variable diameter positions radially laid on the pipeline to be detected, and records the number and the corresponding position of the intelligent sensor, so that the position can be conveniently confirmed in the later period. The intelligent sensors are arranged at equal intervals and at the turning or reducing positions of the pipelines, so that the intelligent sensors can acquire data information of the pipelines to be detected more accurately.
Further, the GPS locator 300 may provide an accurate geographic location anywhere and in near-earth space. Specifically, the GPS locator 300 is disposed at one side of the smart sensor, or the GPS locator 300 is bundled with each smart sensor, and the GPS locator 300 is used to determine the specific position of the smart sensor and form a positioning signal to be transmitted to the main control chip U1 of the control circuit 100 through the RS-485 communication interface 400.
The RS-485 communication interface 400 is defined to balance the drivers and receivers in a digital multipoint system.
Specifically, the RS-485 communication interface 400 is connected to the signal output end of the intelligent sensor and the GPS locator 300, receives the data information of the pipeline and the positioning signal of the corresponding pipeline, which are collected by the intelligent sensor, through the RS-485 communication interface 400, and transmits the data information and the positioning signal to the main control chip U1 of the control circuit 100 through the RS-485 communication interface 400.
Specifically, the communication end of the control circuit 100 is connected to the RS-485 communication interface 400, data transmission and interaction can be achieved through the RS-485 communication interface 400, and the data information and the positioning signal are modulated by the main control chip U1 and then output to the NB-IOT wireless circuits (200a and 200 b).
The NB-IOT radio circuits (200a and 200b) are constructed based on a cellular network, consume approximately 180KHz of bandwidth, and can be deployed directly in a GSM network, a UMTS network, or an LTE network.
Specifically, the NB-IOT radio circuits (200a and 200b) have signal input terminals coupled to the signal output terminals of the control circuit 100, and the NB-IOT radio circuits (200a and 200b) receive the data information and the positioning signal output by the control circuit 100 and upload the data information and the positioning signal to a remote server or a client via the NB-IOT radio circuits (200a and 200 b).
For example, when the master control chip U1 sends data to the remote server, the data of the master control chip U1 may be transmitted to the processing chips U2A and U2B (i.e., BC95) of the NB-IOT wireless circuit (200a and 200b) through the serial port TX (transmit-transmit) pin and RX (receive-receive) pin, and then transmitted to the remote server through the channels of the NB-IOT wireless circuit (200a and 200b) by the processing chips U2A and U2B (i.e., BC95), so as to complete the uploading of the data.
By the cooperation of the intelligent sensor and the GPS positioner 300, the problem that in the prior art, only leakage of a pipeline can be detected, but a specific leakage place cannot be detected can be effectively solved; on the other hand, the RS-485 communication interface 400 and the NB-IOT wireless circuits (200a and 200b) are adopted to upload data to a server or a client, so that the use cost is reduced, the compatibility and the intelligent degree can be effectively improved, and the problem of poor compatibility of the traditional gateway is solved.
In some embodiments, to improve the signal processing performance of the control circuit 100, a master control chip U1 may be provided in the control circuit 100. Specifically, the communication terminal of the main control chip U1 is communicatively connected to the smart sensor, the GPS locator 300, the NB-IOT wireless circuits (200a and 200b), and the remote server, respectively. More specifically, a communication terminal (corresponding to the PC6 terminal — that is, the 37 pin) of the main control chip U1 is connected to a signal input terminal of the smart sensor, and data parameters acquired by the smart sensor are input to the main control chip U1 through the serial PC 6.
The communication end (corresponding to the PC7 end, namely the 38 feet) of the main control chip U1 is connected with the signal output end (corresponding to the TXD1 end) of the GPS locator 300, and the positioning signal of the intelligent sensor corresponding to the GPS locator 300 is output to the main control chip U1, so that the client can accurately acquire the specific position of the intelligent sensor.
The communication end (TX-transmitting end, corresponding to pin 42) of the main control chip U1 is connected to the receiving end (RXD end, corresponding to pin 29) of the NB-IOT wireless circuit 200a, the main control chip U1 modulates the data parameters and the positioning signals, and outputs the modulated data parameters and positioning signals to the NB-IOT wireless circuit 200a, and the NB-IOT wireless circuit 200a uploads the modulated signals to a remote server or a client.
In some embodiments, in order to improve the accuracy of the intelligent sensor in the pipeline data acquisition, the intelligent sensor may be a temperature and humidity sensor (not shown) and a thin film pressure sensor (not shown), respectively.
And the temperature and humidity sensor is used for collecting the temperature and humidity value of the peripheral environment of the pipeline to be detected.
The film type pressure sensor is used for collecting the pressure value of the position where the pipeline to be detected is located.
Specifically, the temperature and humidity sensor and the film type pressure sensor are respectively arranged at the position every fifty meters or the corner (turning) or the diameter-changing position of the pipeline to be detected, which is embedded in the radial direction.
The signal output ends of the temperature and humidity sensor and the film pressure sensor are connected with the signal input end (corresponding to the PC10 end and the PC11 end) of the main control chip U1 through the RS-485 communication interface 400, and the pipeline data parameters acquired by the temperature and humidity sensor and the film pressure sensor are output to the main control chip U1.
It should be noted that the signals collected by the temperature and humidity sensor and the film pressure sensor are analog signals.
In some embodiments, in order to obtain consumption data of the pipeline terminal, the MBUS communication module circuit 600 may be disposed in the intelligent gateway circuit, where the MBUS communication module circuit 600 is a hierarchical system and includes a master device, a plurality of slave devices, and a pair of connection cables, all the slave devices are connected in parallel to the bus, and the master device controls all serial communication processes on the bus.
The MBUS communication module circuit 600 is designed for a data bus for transmitting information of consumption measuring instruments and counters, and the MBUS has various applications in building and industrial energy consumption data acquisition.
The signal input end of the MBUS communication module circuit 600 is connected to the output end of the main control chip U1, and is configured to receive instruction data (for example, header data of a heat meter, an electric meter, or an air source heat pump unit) output after being demodulated by the main control chip U1.
The MBUS communication module circuit 600 is in communication connection with an RSRS-485 interface (not shown) of the meter to be tested through the RSRS-485 interface (not shown), and transmits the instruction data to the meter to be tested (such as a heat meter, an electric meter or an air source heat pump unit) through the RSRS-485 interface (not shown).
MBUS communication module circuit 600 is to the strapping table output instruction data that awaits measuring (gather heat meter, ammeter or air source heat pump set's gauge outfit data promptly), and instruction data are used for triggering the strapping table that awaits measuring and acquire its gauge outfit data to gauge outfit data is fed back to concentrator or customer end, and then realizes long-range checking meter.
In some embodiments, in order to improve the stability of data transmission, a corresponding RS-485 communication interface 400 may be configured in the signal transmission path of the MBUS communication module circuit 600.
Specifically, the signal output terminal of the MBUS communication module circuit 600 is connected to the signal input terminal (RXD terminal, corresponding to 29 pins) of the NB-IOT wireless circuit (200a and 200b) through the RS-485 communication interface 400.
Further, the MBUS communication module circuit 600 transmits header data acquired by the pipeline terminal to the input terminals (TXD terminals, corresponding to 30 pins) of the NB-IOT wireless circuits (200a and 200b) through the RS-485 communication interface 400, and then uploads the data parameters and the positioning signals to the remote server or the client through the NB-IOT wireless circuits (200a and 200 b).
In some embodiments, in order to ensure the reliability of the operation of the control circuit 100, a crystal oscillation circuit 101 may be provided in the control circuit 100, which has the function of generating an oscillation frequency, and generates a standard pulse signal in cooperation with other components.
The crystal oscillation circuit 101 includes a crystal oscillator Y1, a second capacitor C2, and a third capacitor C3, and specifically, the second capacitor C2 is connected in series with the third capacitor C3, and is connected in parallel with the crystal oscillator Y1.
The crystal oscillation circuit 101 is connected to a crystal oscillation terminal (corresponding to PD0 and PD1 terminals) of the main control chip U1, and more specifically, one end of the crystal oscillation Y1 is connected to a crystal oscillation terminal of the main control chip U1, and the other end of the crystal oscillation Y1 is connected to another crystal oscillation terminal of the main control chip U1, so as to generate an oscillation frequency for the operation of the main control chip U1 through the crystal oscillation Y1.
In some embodiments, in order to improve the accuracy of the control circuit 100 executing instructions, a reset circuit 102 may be disposed in the control circuit 100, and the circuit controls the reset state of the main control chip U1 during power-on or reset, so that the main control chip U1 remains in the reset state during the period of time, rather than operating upon power-on or reset, thereby preventing the main control chip U1 from issuing erroneous instructions or performing erroneous operations.
The reset circuit 102 includes a tact switch K1, a tenth resistor R10, a fifth capacitor C5, and a sixth capacitor C6.
Specifically, one end of the reset circuit 102 is connected to the reset terminal (corresponding to the NRST terminal) of the main control chip U1, and the other end of the reset circuit 102 is coupled to the analog ground terminal (corresponding to the VSSA terminal) of the main control chip U1. More specifically, one end of the tact switch K1 is connected to the reset terminal (corresponding to the NRST terminal) of the main control chip U1, and the other end of the tact switch K1 is coupled to the analog ground terminal (corresponding to the VSSA terminal) of the main control chip U1.
One end of the tenth resistor R10 is commonly connected to one end of the fifth capacitor C5 and the reset terminal (corresponding to the NRST terminal) of the main control chip U1, the other end of the fifth capacitor C5 is commonly connected to one end of the sixth capacitor C6 and the analog ground terminal (corresponding to the VSSA terminal) of the main control chip U1, and the other end of the sixth capacitor C6 is connected to the analog electrical terminal (corresponding to the VDDA terminal) of the main control chip U1.
When the circuit is powered on, the circuit can be restored to the initial state by pressing the tact switch K1, so as to prevent the main control chip U1 from sending out wrong instructions and executing wrong operations.
In some embodiments, in order to improve the data transmission performance of the NB-IOT wireless circuits (200a and 200b), a second controller (U2A, U2B — i.e., BC95), a first transistor Q1, a second crystal Y2, a third controller U3, a fourth controller U4, and a fifth controller U5 may be disposed in the NB-IOT wireless circuits (200a and 200 b).
Specifically, the second controller (U2A, U2B-namely BC95) is a high-performance and low-power NB-IoT wireless communication module, has the characteristics of ultra-low power consumption and ultra-high sensitivity, and is used for wireless meter reading.
A receiving end (RXD end) of the second controller U2A is connected with a transmitting end (TX end) of the main control chip U1.
Specifically, when the master control chip U1 sends data to the remote server, the data of the master control chip U1 can be transmitted to the second controller (U2A, U2B, that is, BC95) of the NB-IOT wireless circuit (200a and 200b) through the serial port TX and RX pins, and then transmitted to the remote server through the NBIOT channel by the second controller (U2A, U2B, that is, BC95), so as to complete uploading of the data.
Further, the base of the first transistor Q1 is connected to the reset terminal (corresponding to pin 15) of the second controller (U2A, U2B — i.e., BC95), and the emitter of the first transistor Q1 is connected to the common terminal of the circuit.
The transmitting end (TXD1 end) of the third controller U3 is connected to the receiving end (RXD end) of the second controller (U2A, U2B, namely BC95), and the receiving end (RXD1 end) of the third controller U3 is connected to the transmitting end (TXD end) of the second controller (U2A, U2B, namely BC 95).
The clock signal terminal of the fourth controller U4 is connected to the clock signal terminal (corresponding to 4 pins) of the second controller (U2A, U2B — i.e., BC 95).
A transmitting end (TXD0 end) and a receiving end (RXD0 end) of the fifth controller U5 are respectively connected with a receiving end (RXD0 end) and a transmitting end (TXD0 end) of the second controller (U2A, U2B, namely BC95), and data transmission interaction is realized through the receiving end and the transmitting end.
In some embodiments, in order to improve the accuracy of positioning the pipeline measuring point positions, a seventh controller U7 may be disposed in the GPS locator 300, which has the characteristics of high sensitivity, low power consumption, miniaturization, and the like, and its extremely high tracking sensitivity greatly expands the coverage area of its positioning.
A transmitting end (TXD1 end) and a receiving end (RXD1 end) of the seventh controller U7 are connected to a receiving end (RX end) and a transmitting end (TX end) of the main control chip U1, respectively, and data transmission interaction is achieved through the receiving end and the transmitting end. By using the GPS technology, artificial intelligence can be realized, and then the accurate positioning function can be realized.
In some embodiments, in order to improve the stability of data transmission of the RS-485 communication interface 400, an eighth controller U8, a ninth controller U9, a first transient voltage suppression diode TVS1, a second transient voltage suppression diode TVS2, a third transient voltage suppression diode TVS3 and a fourth transient voltage suppression diode TVS4 may be disposed in the RS-485 communication interface 400 circuit.
The eighth controller U8 and the ninth controller U9 are differential transceivers with transient voltage suppression.
Specifically, a receiving end (corresponding to the D end) of the eighth controller U8 is connected to a transmitting end (RX end) of the main control chip U1, and a transmitting end (corresponding to the R end) of the eighth controller U8 is connected to a receiving end (TX end) of the main control chip U1.
A receiving end (corresponding to the D end) of the ninth controller U9 is connected to a transmitting end (RX end) of the main control chip U1, and a transmitting end (corresponding to the R end) of the ninth controller U9 is connected to a receiving end (TX end) of the main control chip U1.
A first TVS1 and a second TVS2 are disposed between the signal output terminals of the eighth controller U8.
A third TVS3 and a fourth TVS4 are disposed between the signal output terminals of the ninth controller U9.
A first signal output terminal (corresponding to UP458-A) of the eighth controller U8 is connected to the external device through a forty-seventeenth resistor R47, and a second signal output terminal (corresponding to UP458-B) of the eighth controller U8 is connected to the external device through a forty-sixteenth resistor R46.
A first signal output terminal (corresponding to DOWM458-A) of the ninth controller U9 is connected to the external device through a fifteenth resistor R55, and a second signal output terminal (corresponding to DOWM458-B) of the ninth controller U9 is connected to the external device through a fourteenth resistor R54.
Specifically, after an external device with an RS-485 bus interface is connected to the gateway, data sent by the external device is internally converted by the eighth controller U8 and the ninth controller U9, the RS-485 level is converted into a TTL (Transistor-Transistor Logic integrated circuit) level, the master control chip U1 is transmitted, the processing result is sent to the eighth controller U8 and the ninth controller U9 after being processed by the master control chip U1, and the TTL level is converted into an RS-485 level by the eighth controller U8 and the ninth controller U9 and sent to the external device.
In some embodiments, in order to improve the accuracy of the remote meter reading data, a dual voltage comparator (composed of a1 and a 2), a first high-speed optocoupler U2A and an optocoupler U2B may be provided in the MBUS communication module circuit 600, where the dual voltage comparator (composed of a1 and a 2) has the characteristics of wide common-mode input voltage range and output that an or gate may be connected with an open collector.
The high-speed optical coupler has temperature, current and voltage compensation functions.
The dual voltage comparator includes a first voltage comparator A1 and a second voltage comparator A2.
The non-inverting inputs of the first voltage comparator A1 and the second voltage comparator A2 are coupled to the output of a header collector (not shown).
The output end of the first voltage comparator a1 is connected with the input end of the first high-speed optical coupler U2A through a sixty-four resistor R64, the output end of the first high-speed optical coupler U2A is coupled to a signal receiving end (corresponding to a BUS-RX end) of the main control chip U1, the gauge head data of the gauge to be measured acquired by the gauge head collector is output to the main control chip U1 through an RSRS-485 interface (not shown in the figure), and then is fed back to the client end through the main control chip U1.
The output end of the second voltage comparator A2 is connected with the input end of the photoelectric coupler U2B, and the output end of the photoelectric coupler U2B is connected with the external interrupt application input end (corresponding to the INT1 end) of the main control chip U1.
For example, when the master U1 normally operates, it is required to continuously execute its program, and when a signal (i.e., a low level or a falling edge) is input to the external interrupt request input terminal (INT1 port), the master U1 temporarily stops the program being executed, and then transfers the program to a pre-programmed or other program.
In some embodiments, in order to improve the output quality of the header data, a second high-speed optocoupler U2C, a third transistor Q3, a fourth transistor Q4, a fifth transistor Q5, a voltage regulator U10, and a fifth TVS5 may be disposed in the MBUS communication module circuit 600.
The triode has the functions of switching and amplifying, and the fifth transient voltage suppression diode TVS5 has the function of protecting electrical equipment from voltage spikes introduced by a lead.
Specifically, the input terminal of the second high-speed optocoupler U2C is coupled to the signal transmitter (corresponding to BUS-TX) of the main control chip U1.
The base of the third transistor Q3 is coupled to the output of the second high speed optocoupler U2C, and the collector of the third transistor Q3 is connected to the base of the fourth transistor Q4.
The collector of the third transistor Q3 is connected to the base of the fifth transistor Q5 through an eighth twelve resistor R82, and the emitter of the fifth transistor Q5 is connected to the emitter of the fourth transistor Q4.
The adjusting end of the voltage stabilizer U10 is connected to the collector of the fourth transistor Q4, the output end of the voltage stabilizer U10 is connected to the anode of the fifth TVS5 through an eighteenth resistor R88, and the anode of the fifth TVS5 is connected to the emitters of the third transistor Q3 and the fourth transistor Q4.
In some embodiments, in order to reduce the power consumption of the internet of things intelligent gateway, the internet of things intelligent gateway adopts a periodic wake-up working mode, collects data at intervals, is in a low-power-consumption sleep mode at ordinary times, and cuts off all peripheral circuit power supplies during sleep so as to really achieve low power consumption.
It should be noted that the communication function module is only used when the external device has the RS-485 communication interface 400 and is connected with the NB-IOT intelligent gateway through the RS-485 communication interface 400.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (7)
1. The utility model provides a thing networking intelligent gateway which characterized in that possesses:
the intelligent sensor is arranged on one side of the bottom of the pipeline to be detected and used for collecting data information of the pipeline;
at least one GPS locator configured on one side of the smart sensor, the GPS locator for determining a positioning signal of the smart sensor;
at least one RS-485 communication interface which is connected with the intelligent sensor and the signal output end of the GPS locator and is used for transmitting the data information and the positioning signal;
the communication end of the control circuit is connected with the RS-485 communication interface, and the data information and the positioning signal are input into the control circuit through the RS-485 communication interface;
an NB-IOT wireless circuit, a signal input end of which is coupled to a signal output end of the control circuit, receives the data information and the positioning signal output by the control circuit, and uploads the data information and the positioning signal to a remote server or a client through the NB-IOT wireless circuit.
2. The intelligent gateway of the Internet of things of claim 1,
the control circuit is provided with a main control chip, and a communication end of the main control chip is in communication connection with the intelligent sensor, the GPS positioner, the NB-IOT wireless circuit and the remote server respectively.
3. The intelligent gateway of the Internet of things of claim 2,
the intelligent sensor comprises a temperature and humidity sensor and a film type pressure sensor,
the temperature and humidity sensor and the film type pressure sensor are respectively arranged at the position every fifty meters, the corner or the reducing position of the pipeline to be detected, wherein,
the temperature and humidity sensor is used for acquiring the temperature and humidity value of the peripheral environment of the pipeline to be detected;
the film type pressure sensor is used for collecting the pressure value of the position where the pipeline to be detected is located.
4. The intelligent gateway of the Internet of things of claim 3,
and the signal output ends of the temperature and humidity sensor and the film type pressure sensor are respectively connected with the RS-485 communication interface.
5. The intelligent gateway of the Internet of things of claim 4,
the signal input end of the MBUS communication module circuit is connected with the output end of the main control chip and used for receiving the instruction data output after being demodulated by the main control chip;
the MBUS communication module circuit is in communication connection with the RS-485 communication interface of the meter to be tested through the RS-485 communication interface and receives meter head data acquired by the meter to be tested.
6. The intelligent gateway of the Internet of things of claim 5,
the signal output end of the MBUS communication module circuit is connected with the signal input end of the NB-IOT wireless circuit through the RS-485 communication interface;
and the MBUS communication module circuit transmits the header data to the NB-IOT wireless circuit and transmits the header data to the remote server or the client through the NB-IOT wireless circuit.
7. The intelligent gateway of the Internet of things of claim 4,
the control circuit further comprises a crystal oscillation circuit, and the crystal oscillation circuit is connected with the crystal oscillation end of the main control chip and used for generating oscillation frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922138007.0U CN210518384U (en) | 2019-12-03 | 2019-12-03 | Intelligent gateway of Internet of things |
Applications Claiming Priority (1)
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