CN215935112U - NB-Iot-based low-power-consumption infrared communication equipment for state grid electric meter data acquisition - Google Patents
NB-Iot-based low-power-consumption infrared communication equipment for state grid electric meter data acquisition Download PDFInfo
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- CN215935112U CN215935112U CN202122416423.XU CN202122416423U CN215935112U CN 215935112 U CN215935112 U CN 215935112U CN 202122416423 U CN202122416423 U CN 202122416423U CN 215935112 U CN215935112 U CN 215935112U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model discloses a low-power-consumption infrared communication device for state network electric meter data acquisition based on NB-Iot, which comprises an infrared transceiving unit for reading electric meter data, an NB-Iot module for uploading electric parameter information to a cloud platform, a battery for providing a power supply and an MCU for processing data, wherein the output end of the battery is connected with the power supply input end of the MCU, the MCU is respectively and electrically connected with the infrared transceiving unit and the NB-Iot module, and the battery is respectively connected with the infrared transceiving unit and the power supply input end of the NB-Iot module through a power supply control circuit. According to the utility model, the uplink communication adopts an NB-Iot transmission mode to realize data interaction with the cloud platform, the downlink communication adopts an infrared communication mode to acquire ammeter information, power failure is not required in the installation process, the low power consumption of the acquisition device is realized, a laminating mode is adopted, complicated installation is not required, the field deployment time is greatly simplified, and the construction cost is reduced.
Description
Technical Field
The utility model relates to the technical field of data communication, in particular to low-power-consumption infrared communication equipment for state grid electric meter data acquisition based on NB-Iot.
Background
With the rapid development of economy, the number of the special transformer users is more and more, and meanwhile, the requirements on the intelligent operation and maintenance level and the safe power utilization of the electric equipment of the special transformer users are higher and higher. How to collect and upload data of the state network intelligent charging electric meter to a cloud platform for data analysis at low cost, monitor the power utilization state of a special transformer user, synchronously perform energy efficiency analysis and energy utilization adjustment, and improve the intelligent operation and maintenance level of the special transformer user becomes a problem which needs to be paid attention to and solved at present.
Under the traditional mode, the state net intelligent charging ammeter of a special transformer user is connected with a state net acquisition terminal through a 485 bus, the acquisition terminal directly uploads user data to a state net platform through a special net every 15 minutes, and the user cannot obtain own detailed power utilization data in real time. In order to monitor own power consumption information data in real time, a special transformer user mainly obtains the data in the following two ways: 1) a mutual inductor and an intelligent electric meter are installed below the national grid charging electric meter again, so that the cost is high, and power failure is needed in the construction process; 2) general data in the state net ammeter is read through infrared acquisition unit, but infrared acquisition unit needs additionally to supply power at present, and the wiring is more, has the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide the low-power-consumption infrared communication equipment for state grid electric meter data acquisition based on NB-Iot, so that the field deployment time is simplified, and the construction cost is reduced.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows.
The low-power-consumption infrared communication equipment comprises an infrared receiving and transmitting unit for reading electric meter data, an NB-Iot module for uploading power utilization parameter information to a cloud platform, a battery for providing a power supply and an MCU for processing data, wherein the output end of the battery is connected with the power supply input end of the MCU, the MCU is respectively and electrically connected with the infrared receiving and transmitting unit and the NB-Iot module, and the battery is respectively connected with the infrared receiving and transmitting unit and the power supply input end of the NB-Iot module through a power supply control circuit.
The low-power-consumption infrared communication device based on the NB-Iot and used for national grid electric meter data acquisition comprises an infrared transmitting end used for transmitting infrared carrier signals to an electric meter, an infrared receiving end used for acquiring electric meter return data and a peripheral circuit.
The low-power consumption infrared communication equipment based on the NB-Iot and used for national grid electric meter data acquisition comprises an infrared emission head used for emitting infrared signals to an electric meter and a customized optical fiber used for transmitting signals, wherein the infrared emission head is connected with the electric meter through the customized optical fiber.
According to the low-power-consumption infrared communication device based on the NB-Iot and used for national grid ammeter data acquisition, the infrared emission head is coated with the light-blocking coating material.
The low-power consumption infrared communication equipment for state grid electric meter data acquisition based on the NB-Iot is characterized in that the battery is a No. 5 battery with 2 batteries connected in series.
Due to the adoption of the technical scheme, the technical progress of the utility model is as follows.
According to the utility model, the uplink communication adopts an NB-Iot transmission mode to realize data interaction with the cloud platform, the downlink communication adopts an infrared communication mode to acquire ammeter information, power failure is not required in the installation process, the low power consumption of the acquisition device is realized, a laminating mode is adopted, complicated installation is not required, the field deployment time is greatly simplified, and the construction cost is reduced.
Drawings
FIG. 1 is an overall frame diagram of the present invention;
FIG. 2 is a block diagram of the present invention;
FIG. 3 is a schematic structural diagram of an infrared emission unit according to the present invention;
FIG. 4 is a circuit diagram of an IR transmitting terminal according to the present invention;
FIG. 5 is a circuit diagram of an infrared receiving end according to the present invention;
FIG. 6 is a circuit diagram of a power control circuit according to the present invention;
FIG. 7 is a circuit diagram of an NB-Iot module according to the present invention;
FIG. 8 is a power-up flow diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The overall frame diagram of the low-power-consumption infrared communication equipment based on NB-Iot and used for national grid electric meter data acquisition is shown in fig. 1, infrared communication is carried out between the infrared communication equipment and an electric meter, and signal transmission is carried out between the infrared communication equipment and a cloud platform through NB-Iot. The low-power consumption acquisition equipment performs data exchange with the ammeter through infrared communication, awakens once every 15 minutes, reads the voltage, current, active power, reactive power, power factors and active and reactive frozen readings of the time node, uploads read information through NB-Iot after reading correct data, and uploads the read information by adopting an MQTT protocol.
The structural block diagram of the infrared communication equipment is shown in fig. 2 and comprises an infrared transceiving unit, an NB-Iot module, a battery and an MCU, wherein the infrared transceiving unit is used for reading ammeter data, the NB-Iot module is used for uploading the read electricity utilization parameters to a cloud platform, the battery is used for providing a power supply, the MCU is used for carrying out data processing, the output end of the battery is connected with the power supply input end of the MCU, the MCU is respectively and electrically connected with the infrared transceiving unit and the NB-Iot module for carrying out data exchange, and the battery is respectively connected with the power supply input ends of the infrared transceiving unit and the NB-Iot module through a power supply control circuit.
The schematic structural diagram of the infrared transceiving unit is shown in fig. 3, and the infrared transceiving unit comprises an infrared transmitting end, an infrared receiving end and a peripheral circuit, wherein the infrared transmitting end is used for transmitting an infrared carrier signal to the electric meter, and the infrared receiving end is used for acquiring data returned by the electric meter. The circuit diagrams of the infrared transmitting end and the infrared receiving end are respectively shown in fig. 4 and 5, the transmitting end controls the on-off of the triode Q7 through a DATA _ OUT pin to transmit binary DATA '0' or '1', and controls the triode Q8 through a PWM1 pin to modulate a 38kHz signal, so that the function of transmitting DATA at 38kHz by the infrared transmitting tube D10 is realized; the receiving end demodulates the received infrared signal through the U5, sets the DATA _ IN pin as input capture, decodes the pulse signal, and completes the DATA reception.
The infrared transmitting end comprises an infrared transmitting head and a customized optical fiber, the infrared transmitting head is connected with the electric meter through the customized optical fiber, the infrared transmitting head is used for transmitting infrared signals to the electric meter, and the customized optical fiber is used for transmitting optical signals to the electric meter.
The overhead coating of one deck of infrared emission has closed light coating material, prevent that photoelectric emission pipe is to the light leak all around, simultaneously through customization optic fibre, with the direct collection head to the ammeter of infrared emission head, change the light transmission return circuit through optic fibre, the light signal of transmission passes through the infrared receiving head of optic fibre direct transmission to the ammeter, the loss of light signal has been reduced at this in-process, the interference killing feature of communication has been strengthened, less light loss means lower communication light intensity, simultaneously with the help of the flexibility of optic fibre, make the collection equipment needn't just to the place ahead of ammeter, simple to operate.
During infrared communication, the infrared receiving and transmitting unit requests ammeter data by transmitting 38kHz infrared carrier signals, various parameter information of the ammeter is called, the infrared transmitting head of the infrared receiving and transmitting unit sends an instruction, the infrared receiving head of the intelligent ammeter returns data to the infrared receiving tube of the infrared receiving and transmitting unit through the infrared transmitting tube after receiving a correct instruction, and the infrared receiving tube transmits the returned data to the MCU for analysis.
The battery is 2 batteries of No. 5 batteries connected in series for the equipment power supply, and supply voltage is 3V, and the battery directly supplies power for low-power consumption MCU, and the battery supplies power for infrared transceiver unit and NB-Iot module respectively through power control circuit, and MCU passes through control pin control power supply circuit's break-make. The circuit diagram of the power supply control circuit is shown in fig. 6, the power supply part is a BUCK voltage reduction circuit, the working and closing states of U10 and U11 are controlled through VCC _ EN and VDD _ EN pins respectively, power supply control of the infrared communication part and the NB-Iot module part is carried out, the infrared communication part and the NB-Iot module part are enabled to be in working and dormant states, and the purpose of low power consumption is achieved.
The NB-Iot module is used for receiving and transmitting network data between the MCU and the cloud platform, the MCU reads power utilization parameter information in the ammeter through the infrared receiving and transmitting unit, the power utilization parameter information is transmitted to the NB-Iot module after being packaged by an MQTT protocol, and the NB-Iot module re-packages the data according to a COAP protocol and transmits the data to the cloud platform through a cellular network. The circuit diagram of the NB-Iot module is shown in FIG. 7, an M5311 industrial NB-Iot communication module is adopted to communicate with a main control chip through a UART1 serial port to transmit DATA, and the NB-Iot module communicates with a SIM card through SIM _ DATA and SIM _ CLK to upload packaged DATA to a network terminal. The U9 is a level conversion chip, so that modules in different power domains can normally communicate with a main control chip or an external debugging and upgrading port.
After the upper data of the NB-Iot module is transmitted to the network terminal, the NB-Iot module enters an idle state, the PSM is requested to enter at the moment, the network terminal configures a T3324 timer value in a response message and returns the timer to the module, the timer is started, after the timer is overtime, the module enters a PSM mode, most networking activities are closed under the state, the lower data can not be reached, but the T3412 timer can still continue to work, the network terminal still retains the information of the NB module, when the module is awakened from the PSM, the module can directly enter a connection state, and the module has 2 modes to exit the PSM state: one is that the module needs active uplink data (needs wakeup operation), and the other is that the TAU is started after the T3412 timer expires. By using the mode, the module can keep a dormant state under most conditions, and is awakened only when uplink data is needed and the connection with the network end needs to be kept after the uplink data and the network end are idle for a period of time, so that the power consumption of the module is greatly reduced.
MCU reads ammeter information through infrared communication module, handles data after receiving, and rethread serial ports send data to NB-Iot module. When the equipment is in an idle state, the MCU cuts off the power supply of the infrared receiving and transmitting unit through the related control power supply control circuit, so that unnecessary electric energy loss of the power supply of the receiving and transmitting unit is reduced, and low power consumption is achieved. For the NB-Iot module part, whether to cut off the NB-Iot power supply is intelligently selected through an equipment control mode, and the specific calculation formula is as follows: power consumption 1, NB-Iot module sleep quiescent current power supply voltage device wake-up time every two times; power consumption 2, NB-Iot module start-up average current supply voltage start-up time + module capacitor charging loss. And calculating an optimal control mode by calculating the values of the power consumption 1 and the power consumption 2 so as to realize low power consumption. Meanwhile, the low-power consumption MCU is configured into a timing awakening mode, and the whole equipment is in dormancy in an idle state.
The power-up flow diagram of the present invention is shown in figure 8,
1) and starting power-on, and initializing parameters of the equipment. And the MCU sends a corresponding AT command to the NB-Iot module through the LPUART serial port to initialize the module.
2) After the initialization of each functional module is completed, reading each configuration data stored in the FLASH inside the MCU, such as: the system comprises a communication cloud platform, a communication cloud platform network address, an electric meter address communicated with the communication cloud platform, infrared communication frequency, equipment uploading time and the like.
3) After the configuration information is read, the equipment firstly obtains the address of the electric meter through the infrared interface at the appointed communication frequency, when the electric meter can not effectively respond, the equipment carries out self-adaptive verification through a self-adaptive frequency program according to a preset algorithm until the electric meter effectively responds and feeds back the address of the electric meter.
4) And when the electric meter address is read correctly, the equipment compares the read address with a pre-stored address, and if the address parameters are inconsistent, the newly acquired data is written into the FLASH in the MCU chip.
5) And after the handshaking communication between the equipment and the ammeter is completed, performing a cloud platform handshaking communication test.
6) After the equipment and the cloud platform are in handshake communication, the MCU enters a normal working state, sends a data reading command to the ammeter through the infrared communication module by setting a frequency designated address, and then waits for receiving data responded by the ammeter.
7) After the ammeter data are received, analyzing the data, extracting an effective data part, carrying out MQTT protocol encapsulation, then sending a corresponding command to the NB-Iot module through a serial port, sending the data out of the module, completing one-time ammeter data acquisition, and then enabling the equipment to enter a low-power consumption sleep mode. After 15 minutes, the device periodically wakes up and repeats the operations of 6 steps to 7 steps.
When downlink data exist AT the network end, the NB-Iot module analyzes and processes the downlink data, converts the downlink data into corresponding AT commands and then sends the AT commands to the processor through the serial port, wakes up the processor, receives and processes the data, executes corresponding operations, and enters a low power consumption mode again after the execution is finished.
The NB-Iot module also enters a PSM mode after the uplink data is finished, and then exits the PSM mode after waiting for the uplink data or the timeout of the timer.
Claims (5)
1. A low-power consumption infrared communication equipment for state net electric meter data acquisition based on NB-Iot, its characterized in that: the electric meter comprises an infrared receiving and transmitting unit for reading electric meter data, an NB-Iot module for uploading power utilization parameter information to a cloud platform, a battery for providing a power supply and an MCU for processing data, wherein the output end of the battery is connected with the power supply input end of the MCU, the MCU is respectively and electrically connected with the infrared receiving and transmitting unit and the NB-Iot module, and the battery is respectively connected with the power supply input ends of the infrared receiving and transmitting unit and the NB-Iot module through a power supply control circuit.
2. The NB-Iot based low power consumption infrared communication device for state grid power meter data collection according to claim 1, characterized in that: the infrared receiving and transmitting unit comprises an infrared transmitting end used for transmitting infrared carrier signals to the electric meter, an infrared receiving end used for acquiring return data of the electric meter and a peripheral circuit.
3. The NB-Iot based low power consumption infrared communication device for state grid power meter data collection according to claim 2, characterized in that: the infrared transmitting end comprises an infrared transmitting head used for transmitting infrared signals to the electric meter and a customized optical fiber used for transmitting the signals, and the infrared transmitting head is connected with the electric meter through the customized optical fiber.
4. The NB-Iot based low power consumption infrared communication device for state grid power meter data collection according to claim 3, characterized in that: and the infrared emission head is coated with a layer of light-blocking coating material.
5. The NB-Iot based low power consumption infrared communication device for state grid power meter data collection according to claim 1, characterized in that: the battery is 2 batteries of No. 5 connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122416423.XU CN215935112U (en) | 2021-10-08 | 2021-10-08 | NB-Iot-based low-power-consumption infrared communication equipment for state grid electric meter data acquisition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122416423.XU CN215935112U (en) | 2021-10-08 | 2021-10-08 | NB-Iot-based low-power-consumption infrared communication equipment for state grid electric meter data acquisition |
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| Publication Number | Publication Date |
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| CN215935112U true CN215935112U (en) | 2022-03-01 |
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| CN202122416423.XU Expired - Fee Related CN215935112U (en) | 2021-10-08 | 2021-10-08 | NB-Iot-based low-power-consumption infrared communication equipment for state grid electric meter data acquisition |
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| CN (1) | CN215935112U (en) |
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2021
- 2021-10-08 CN CN202122416423.XU patent/CN215935112U/en not_active Expired - Fee Related
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Granted publication date: 20220301 |