CN212966519U - Remote meter reading system based on GPS - Google Patents
Remote meter reading system based on GPS Download PDFInfo
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- CN212966519U CN212966519U CN202021971809.6U CN202021971809U CN212966519U CN 212966519 U CN212966519 U CN 212966519U CN 202021971809 U CN202021971809 U CN 202021971809U CN 212966519 U CN212966519 U CN 212966519U
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Abstract
The utility model relates to a GPS technical field discloses a higher and higher based on GPS remote meter reading system of data accuracy of transmission efficiency, possesses: the data acquisition unit (101) is used for acquiring the electric quantity data information of the electric meter; the signal input end of the concentrator (U101) is coupled with the signal input end of the data collector (101) and is used for receiving the electric quantity data information and processing the electric quantity data information; the input end of the photoelectric coupler (U1A) is connected with the signal output end of the intermediate collector (U101); and the input end of the Microcontroller (MCU) is connected with the output end of the photoelectric coupler (U1A), and the microcontroller is used for collecting the electric quantity data information of each data collector (101) and sending the electric quantity data information to the management center.
Description
Technical Field
The utility model relates to a GPS technical field, more specifically say, relate to a remote meter reading system based on GPS.
Background
The GPS remote meter reading is realized based on electric quantity metering or information acquisition, information remote transmission, background software processing and analysis. At present, when the GPS remote meter reading system in the prior art acquires the electric quantity information, the information is uploaded to a server, and in the data transmission process, the transmission efficiency of the system is low and the power consumption is high, so that the accuracy of the electric quantity information is low.
Therefore, how to improve the accuracy of data transmission of the GPS remote meter reading system becomes a technical problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, the transmission efficiency to the above-mentioned system of prior art is lower and the consumption is higher, leads to the lower defect of accuracy of electric quantity information, provides the higher and data accuracy higher based on GPS long-range system of checking meter of transmission efficiency.
The utility model provides a technical scheme that its technical problem adopted is: a GPS-based remote meter reading system is constructed, and the GPS-based remote meter reading system is provided with:
the data acquisition unit is used for acquiring electric quantity data information of the electric meter;
the signal input end of the concentrator is coupled with the signal input end of the data collector and used for receiving the electric quantity data information and processing the electric quantity data information;
the input end of the photoelectric coupler is connected with the signal output end of the intermediate collector;
and the input end of the microcontroller is connected with the output end of the photoelectric coupler and is used for collecting the electric quantity data information of each data acquisition unit and sending the electric quantity data information to a management center.
In some embodiments, the system further comprises a communication module circuit, an input terminal of the communication module circuit is coupled to the signal output terminal of the microcontroller,
the communication module circuit is used for acquiring the electric quantity data information output by the microcontroller and sending the electric quantity data information to a management center.
In some embodiments, the communication module circuit comprises an RS-485 transceiver, and a signal input terminal of the RS-485 transceiver is connected with a signal output terminal of the microcontroller.
In some embodiments, the optocoupler includes a first optocoupler and a second optocoupler,
the input end of the first photoelectric coupler is connected with the high-frequency synchronous output end of the intermediate collector, and the output end of the first photoelectric coupler is connected with one input end of the microcontroller;
and the input end of the second photoelectric coupler is connected with the reference output end of the intermediate collector.
In some embodiments, the device further comprises a first resistor and a second resistor, one end of the first resistor is connected with an output end of the data collector, the other end of the first resistor is connected with an input end of the concentrator,
one end of the second resistor is connected with the other output end of the data collector, and the other end of the second resistor is connected with the other input end of the concentrator.
In some embodiments, the oscillator further comprises a crystal oscillator circuit, one end of the crystal oscillator circuit is connected with one clock signal end of the concentrator, and the other end of the crystal oscillator circuit is connected with the other clock signal end of the concentrator.
Based on long-range system of checking meter of GPS in, including at least one data collection station, well collector and the microcontroller that is used for acquireing the electric quantity data information of ammeter, wherein, the signal input part of well collector is coupled in data collection station's signal input part for receive electric quantity data information, its electric quantity data information that is used for collecting each data collection station of microcontroller, and pass through wireless communication transmission to management center with electric quantity data information. Compared with the prior art, the method has the advantages that the plurality of data collectors used for acquiring the electric quantity data information are arranged, the collected electric quantity data information is processed through the concentrator (for example, missing data and abnormal data are automatically subjected to verification and correction to ensure the continuity and the integrity of the data), and then the processed electric quantity data information is transmitted to the management center, so that the problem that the accuracy of the data information is low in the data transmission process is solved.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a circuit diagram of a local meter reading communication module according to an embodiment of the GPS remote meter reading system of the present invention;
fig. 2 is a circuit diagram of a communication module according to an embodiment of the present invention, which is based on a GPS remote meter reading system;
fig. 3 is an interface peripheral circuit diagram of the embodiment of the GPS remote meter reading system of the present invention.
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.
As shown in fig. 1 to fig. 3, in the first embodiment of the GPS-based remote meter reading system of the present invention, the GPS-based remote meter reading system includes a local meter reading communication module circuit 100, a communication module circuit 200, and an interface peripheral circuit 300.
The local meter reading communication module circuit 100 is used for acquiring and processing electric quantity data information of the electric meter.
The local meter reading communication module circuit 100 comprises at least one data collector 101, a central collector U101, photocouplers (U1A, U1B) and a microcontroller MCU.
The data collector 101 has real-time collection, instant feedback and automatic transmission functions.
The aggregator U101 has the functions of automatic missing data supplement and automatic abnormal data check and correction, so as to ensure the continuity and integrity of data.
The photocouplers (U1A, U1B) mainly function to isolate the grounds of the analog circuit and the digital circuit, thereby suppressing the interference of the analog circuit.
The microcontroller MCU performs arithmetic operations according to a sequence of instructions written by a programmer, manages the data streams and generates control signals.
Specifically, the data collector 101 is configured in the electric meter to be detected, and is configured to obtain electric quantity data information of the electric meter to be obtained, and send the electric quantity data information to the concentrator U101.
The signal input end (corresponding to the V1P and V1V ends) of the intermediate collector U101 is connected to the signal input end of the data collector 101, and is configured to receive the electric quantity data information output by the data collector 101 and process the input electric quantity data information.
Specifically, during data transmission, data may be lost, automatic supplementary recording is performed on the missing data or automatic check correction is performed on abnormal data through the concentrator U101 to ensure continuity and integrity of the data, and then the processed electric quantity data information is output to a photocoupler (corresponding to U1A).
The input end (corresponding to the CF end) of the photocoupler (corresponding to U1A) is connected with the signal output end (corresponding to the CF end) of the intermediate collector U101, and is used for isolating the input data signal and then outputting the data signal to the microcontroller MCU.
The input end (corresponding to the P1.0 end) of the microcontroller MCU is connected with the output end of the photoelectric coupler (corresponding to the U1A), and the microcontroller MCU is used for collecting electric quantity data information of each data acquisition unit 101 which is isolated and output by the photoelectric coupler (corresponding to the U1A), and then sending the electric quantity data information to the management center through the wireless communication circuit.
For example, after the data acquisition unit 101 receives a meter reading instruction of the concentrator U101, the data acquisition unit 101 performs electric quantity data signal acquisition on a meter head to be read according to the meter reading instruction, and then feeds back the electric quantity data signal to the concentrator U101.
The central collector U101 collects the data of each data collector 101, records, analyzes, and processes the data (i.e., automatically performs additional recording or automatic abnormal data verification and correction), and sends the data to the microcontroller MCU, and the microcontroller MCU transmits the processed data to the management center.
By using the technical scheme, the plurality of data collectors 101 for acquiring the electric quantity data information are arranged, the collected electric quantity data information is processed (such as automatic missing data supplement and abnormal data automatic check and correction) through the concentrator U101, and then the processed electric quantity data information is transmitted to the management center, so that the problem of low accuracy of the data information in the data transmission process is solved.
In some embodiments, in order to improve the accuracy of data transmission, a communication module circuit 200 may be disposed in the system, which uses an RS-485 interface for data interaction, and through the combination of a balanced driver and a differential receiver, the RS-485 interface has the advantages of stable data transmission, high reliability, long transmission distance, high speed, strong interference resistance, and the like.
Specifically, an input end (corresponding to the RO end) of the communication module circuit 200 and a signal output end of the microcontroller MCU, the communication module circuit 200 is configured to obtain the electric quantity data information output by the microcontroller MCU, and send the electric quantity data information to the management center.
Specifically, one signal terminal (corresponding to the RO port) of the communication module circuit 200 is connected to a P3.5 (corresponding to the RXD) pin of the microcontroller MCU, and the other signal terminal (corresponding to the DI port) is connected to a P3.4 (corresponding to the TXD) pin of the microcontroller MCU; the P1.6 pin of the microcontroller MCU controls the enabling end (corresponding to the DE end) of the communication module circuit 200, the A ports of all RS-485 transceivers U201 (belonging to the communication module circuit 200) of all users are connected to the A bus, the B port is connected to the B bus, and then data interaction is realized.
In some embodiments, to improve the performance of the communication module circuit 200, an RS-485 transceiver U201, a clamping circuit, a first inductor L201, and a second inductor L202 may be disposed in the communication module circuit 200.
The RS-485 transceiver U201 is used for receiving and transmitting data signals.
The clamping circuit is used for protecting the RS-485 transceiver U201 so as to avoid high-voltage damage generated when the RS-485 transceiver U201 is interfered by the outside (lightning stroke and surge).
The first inductor L201 and the second inductor L202 are used to improve the electromagnetic interference performance of the circuit.
Specifically, a signal input end (corresponding to the RO end) of the RS-485 transceiver U201 is connected with a signal output end (corresponding to the P3.4 end) of the microcontroller MCU,
a signal output end (corresponding to the DI end) of the RS-485 transceiver U201 is connected with a signal input end (corresponding to the P3.5 end) of the microcontroller MCU,
an enabling end (corresponding to the DE end) of the RS-485 transceiver U201 is connected with a signal output end (corresponding to the P1.6 end) of the microcontroller MCU.
In some embodiments, for stability of the input power data information, photo couplers may be provided as the first photo coupler U1A and the second photo coupler U1B, wherein the main role of the photo couplers is to isolate the grounds of the analog circuit and the digital circuit, thereby suppressing interference of the analog circuit.
Specifically, the input end of the first photocoupler U1A is connected to the high frequency synchronization output end (corresponding to the CF end) of the intermediate collector U101, and the output end of the first photocoupler U1A is connected to an input end (corresponding to P1.0) of the microcontroller MCU.
The microcontroller MCU counts the high-frequency synchronous output end (corresponding to the CF end) within the integral time set by the internal timer, and the electric quantity data information can be obtained according to the counted number.
The input end of the second photocoupler U1B is connected to the reference output end (corresponding to the REVP end) of the intermediate collector U101.
In some embodiments, in order to perfect the performance of the circuit, a first resistor R101 and a second resistor R102 may be disposed in the circuit, wherein one end of the first resistor R101 is connected to an output terminal (corresponding to 2 pins) of the data collector 101, and the other end of the first resistor is connected to an input terminal (corresponding to V1P terminal) of the combiner U101.
One end of the second resistor R102 is connected to the other output end (corresponding to pin 3) of the data collector 101, and the other end of the second resistor R102 is connected to the other input end (corresponding to terminal V1V) of the concentrator U101.
Namely, the electric meter electricity quantity data information acquired by the data acquisition unit 101 is input into the concentrator U101 through the first resistor R101 and the second resistor R102.
In some embodiments, a crystal oscillator circuit is further included for generating the clock pulse signal.
Specifically, one end of the crystal oscillator circuit is connected to a clock signal terminal (corresponding to the CLKO terminal) of the repeater U101, and the other end of the crystal oscillator circuit is connected to another clock signal terminal (corresponding to the CLK1 terminal) of the repeater U101.
The crystal oscillator circuit is formed by connecting a crystal oscillator Y101, a ninth capacitor C109, and a tenth capacitor C110.
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 (6)
1. A GPS-based remote meter reading system is characterized by comprising:
the data acquisition unit is used for acquiring electric quantity data information of the electric meter;
the signal input end of the concentrator is coupled with the signal input end of the data collector and used for receiving the electric quantity data information and processing the electric quantity data information;
the input end of the photoelectric coupler is connected with the signal output end of the intermediate collector;
and the input end of the microcontroller is connected with the output end of the photoelectric coupler and is used for collecting the electric quantity data information of each data acquisition unit and sending the electric quantity data information to a management center.
2. The GPS-based remote meter reading system according to claim 1,
the microcontroller also comprises a communication module circuit, one input end of the communication module circuit is coupled with the signal output end of the microcontroller,
the communication module circuit is used for acquiring the electric quantity data information output by the microcontroller and sending the electric quantity data information to a management center.
3. The GPS-based remote meter reading system according to claim 2,
the communication module circuit comprises an RS-485 transceiver, and the signal input end of the RS-485 transceiver is connected with the signal output end of the microcontroller.
4. The GPS-based remote meter reading system according to claim 1,
the photoelectric coupler comprises a first photoelectric coupler and a second photoelectric coupler,
the input end of the first photoelectric coupler is connected with the high-frequency synchronous output end of the intermediate collector, and the output end of the first photoelectric coupler is connected with one input end of the microcontroller;
and the input end of the second photoelectric coupler is connected with the reference output end of the intermediate collector.
5. The GPS-based remote meter reading system according to any one of claims 1 to 3,
the device also comprises a first resistor and a second resistor, wherein one end of the first resistor is connected with one output end of the data collector, the other end of the first resistor is connected with one input end of the concentrator,
one end of the second resistor is connected with the other output end of the data collector, and the other end of the second resistor is connected with the other input end of the concentrator.
6. The GPS-based remote meter reading system according to claim 5,
the crystal oscillator circuit is characterized by further comprising a crystal oscillator circuit, one end of the crystal oscillator circuit is connected with one clock signal end of the middle collector, and the other end of the crystal oscillator circuit is connected with the other clock signal end of the middle collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021971809.6U CN212966519U (en) | 2020-09-10 | 2020-09-10 | Remote meter reading system based on GPS |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021971809.6U CN212966519U (en) | 2020-09-10 | 2020-09-10 | Remote meter reading system based on GPS |
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| CN212966519U true CN212966519U (en) | 2021-04-13 |
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| CN202021971809.6U Active CN212966519U (en) | 2020-09-10 | 2020-09-10 | Remote meter reading system based on GPS |
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