A test tooling system for a small current branch identification module

Abstract

The present invention relates to the technical field of small current identification, and specifically relates to a test tooling system for a small current branch identification module, including a first live wire and a first neutral wire. The output ends of the first live wire and the first neutral wire are electrically connected to a module under test, and the first live wire and the first neutral wire are used for the power supply of the test tooling. The output end of the first live wire is electrically connected to a tooling main board module. In the present invention, the calculation chip analyzes the data of the signal, and the tooling main board module transmits it to the upper computer module through a communicator. The upper computer module receives the data of the tooling main board module and makes a data judgment. If so, it is determined that the detection is qualified; if not, it is determined that the detection is unqualified. Since the switching current is determined in this method, the value of the current is always guaranteed to be constant, and the obtained judgment result is accurate. There is no need to perform multiple detections to accurately determine the result, improving the detection efficiency of small current signals.

Description

Technical Field

[0001] The present invention relates to the technical field of small current identification, and specifically relates to a test tooling system for a small current branch identification module. Background Art

[0002] In the mid-station identification of the HPLC communication unit, small current signal detection technology and power line carrier communication are used for branch identification of substations. This method includes a disturbance loading step and a disturbance detection step, and includes the following functions:

[0003] The central node controls the target branch node to send a disturbance current signal. The branch node detects the disturbance current signal and sends the detection result to the central node. The central node calculates the topological structure of the to-be-tested substation according to the detection result.

[0004] The existing technical solutions design an algorithm for collecting current, collect the current on the L and N power lines, and calculate whether the magnitude of the current is within the calculated theoretical current value range. If it is within the range, it is determined to be qualified; if not, it is determined to be unqualified. The determination result obtained by this method is relatively inaccurate, and multiple detections are required to accurately determine the result, which reduces the detection efficiency of small current signals. Summary of the Invention

[0005] Therefore, the present invention provides a test tooling system for a small current branch identification module to solve the above problems.

[0006] The present invention provides the following technical solutions: A test tooling system for a small current branch identification module includes a first live wire and a first neutral wire. The output ends of the first live wire and the first neutral wire are electrically connected to a module under test, and the first live wire and the first neutral wire are used for power supply of the test tooling.

[0007] The output end of the first live wire is electrically connected to a tooling main board module. The tooling main board module is used to measure the effective values of current and voltage of each phase, power factor, frequency, and phase parameters. The receiving end of the tooling main board module is electrically connected to a second live wire, and the receiving end of the tooling main board module is electrically connected to a second neutral wire. The second live wire and the second neutral wire are used for power supply of the tooling main board module body.

[0008] As a preferred solution of the present invention, the tooling main board module further includes a metering chip. The acquisition end of the metering chip is electrically connected to the output end of the first live wire, the output end of the first neutral wire is electrically connected to the acquisition end of the metering chip, the output ends of the second live wire and the second neutral wire are both electrically connected to the receiving end of the metering chip, the second live wire and the second neutral wire are used for power supply of the metering chip, and the output ends of the first live wire and the first neutral wire are electrically connected to a copy control module. The metering chip is used to collect the electrical signals transmitted by the first live wire and the first neutral wire.

[0009] As a preferred solution of the present invention, the output end of the metering chip is electrically connected to a serial peripheral interface, the output end of the serial peripheral interface is electrically connected to a transmission line, the output end of the transmission line is electrically connected to a calculation chip, the output ends of the second live wire and the second neutral wire are electrically connected to the receiving end of the serial peripheral interface, the second live wire and the second neutral wire are used for power supply of the serial peripheral interface, the output ends of the second live wire and the second neutral wire are electrically connected to the receiving end of the calculation chip, and the second live wire and the second neutral wire are used for power supply of the calculation chip. The output end of the reading and control module is electrically connected to a communicator.

[0010] As a preferred solution of the present invention, the output end of the calculation chip is electrically connected to a communicator, the output end of the communicator is electrically connected to a host computer module, the output end of the host computer module is electrically connected to the receiving end of the communicator, and the output end of the communicator is electrically connected to the receiving end of the reading and control module.

[0011] As a preferred solution of the present invention, the chip model of the metering chip is a three-phase metering chip. The metering chip is used to provide combined phase and active power, reactive power, apparent power, active energy and reactive energy of each phase, and the metering chip is used to measure the effective values of current and voltage of each phase, power factor, frequency and phase parameters.

[0012] As a preferred solution of the present invention, the chip model of the calculation chip is a main chip. The calculation chip is used to collect the information collected by the metering chip and analyze the information collected by the metering chip.

[0013] As a preferred solution of the present invention, the reading and control module is used to detect whether the module to be measured is in place.

[0014] As a preferred solution of the present invention, the tooling main board module supports a display interface standard.

[0015] As a preferred solution of the present invention, the tooling main board module supports a display interface standard.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] In the present invention, the copying controller module sends an HPLC carrier signal to the module under test through the first live wire and the first neutral wire to start the small current function test. Since the current in the first live wire is constantly switched, the metering circuit inside the tooling main board module detects the change in current at this time and automatically identifies the waveform of the small current. The waveform signal is transmitted to the calculation chip in the tooling main board module through the transmission line via the internal serial peripheral interface. The calculation chip analyzes the data of the signal, and the tooling main board module transmits it to the host computer module through the communicator. The host computer module receives the data from the tooling main board module and makes a data judgment. If so, it determines that the detection is qualified; if not, it determines that the detection is unqualified. In this method, since the current in the first live wire 3 is constantly switched at 833HZ, the value of the current is always kept constant, and the obtained judgment result is accurate, with the error within the tolerance range. There is no need to perform multiple detections to accurately determine the result, which improves the detection efficiency of the small current signal. Description of the Drawings

[0018] Figure 1 It is the overall structure system flowchart of the present invention;

[0019] Figure 2 It is the system flowchart of the tooling main board module in the present invention.

[0020] In the figure: 1. Second live wire; 2. Second neutral wire; 3. First live wire; 4. First neutral wire; 5. Host computer module; 6. 485 communicator; 7. 232 communicator; 8. Module under test; 9. Tooling main board module; 901. Metering chip; 902. Serial peripheral interface; 903. Transmission line; 904. Calculation chip. Detailed Embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figure 1-2 The technical solutions provided by the present invention specifically include the following embodiments:

[0023] Embodiment 1: A test tooling system for a small current branch identification module, including a first live wire 3 and a first neutral wire 4. The output ends of the first live wire 3 and the first neutral wire 4 are electrically connected to the module under test 8. The first live wire 3 and the first neutral wire 4 are used for the power supply of the test tooling. L1 represents the first live wire 3, and N1 represents the first neutral wire 4. The output end of the first live wire 3 is electrically connected to a tooling main board module 9. The tooling main board module 9 is used to measure the effective values of current and voltage of each phase, power factor, frequency, and phase parameters. The receiving end of the tooling main board module 9 is electrically connected to a second live wire 1 and a second neutral wire 2. The second live wire 1 and the second neutral wire 2 are used for the power supply of the board body of the tooling main board module 9. The tooling main board module 9 supports the display interface standard.

[0024] The tooling main board module 9 further includes a metering chip 901. The acquisition end of the metering chip 901 is electrically connected to the output end of the first live wire 3. The output end of the first neutral wire 4 is electrically connected to the acquisition end of the metering chip 901. The output ends of the second live wire 1 and the second neutral wire 2 are both electrically connected to the receiving end of the metering chip 901. The second live wire 1 and the second neutral wire 2 are used for the power supply of the metering chip 901. The output ends of the first live wire 3 and the first neutral wire 4 are electrically connected to a copy control module 10. The metering chip 901 is used to collect the electrical signals transmitted by the first live wire 3 and the first neutral wire 4. The output end of the metering chip 901 is electrically connected to a serial peripheral interface 902. The output end of the serial peripheral interface 902 is electrically connected to a transmission line 903. The output end of the transmission line 903 is electrically connected to a calculation chip 904. The output ends of the second live wire 1 and the second neutral wire 2 are connected to the receiving end of the serial peripheral interface 902. The second live wire 1 and the second neutral wire 2 are used for the power supply of the serial peripheral interface 902. The output ends of the second live wire 1 and the second neutral wire 2 are connected to the receiving end of the calculation chip 904. The second live wire 1 and the second neutral wire 2 are used for the power supply of the calculation chip 904. The output end of the copy control module 10 is electrically connected to a 232 communicator 7.

[0025] The tooling main board module 9, the copy control module 10, and the upper computer module are inserted between the module under test 8 and the electric meter, and utilize the HPLC power line carrier communication principle to fully simulate the actual on-site application scenario. The copy control module 10 uses the carrier communication of HPLC to transmit carrier information. The tooling main board module 9 uses a metering circuit to collect small current characteristic signals and uses the Fourier transform algorithm to decode the small current characteristic signals. At the same time, a method combining the power line current metering function and the Fourier algorithm decoding function is designed. It has multiple stable communication channels, a reliable acquisition and calculation module, and a determination mechanism, and has the advantages of stability, low cost, and high efficiency.

[0026] The output terminal of the calculation chip 904 is electrically connected to the 485 communicator 6. The output terminal of the 485 communicator 6 is electrically connected to the host computer module 5. The output terminal of the host computer module 5 is electrically connected to the receiving end of the 232 communicator 7. The output terminal of the 232 communicator 7 is electrically connected to the receiving end of the copy control module 10. The chip model of the metering chip 901 is the V9203 three-phase metering chip. The metering chip 901 is used to provide the combined phase and the active power, reactive power, apparent power, active energy and reactive energy of each phase. The metering chip 901 is used to measure the effective values of the current and voltage of each phase, power factor, frequency and phase parameters. The chip model of the calculation chip 904 is the M481 main chip. The calculation chip 904 is used to collect the information collected by the metering chip 901. The calculation chip 904 is used to analyze the information collected by the metering chip 901. The copy control module 10 is used to detect whether the measured module 8 is in place.

[0027] The host computer module 5 sends a signal to the copy control module 10 through the 232 communicator 7 to detect whether the measured module 8 is in place. The copy control module 10 continuously sends HPLC carrier signals through the first live wire 3 and the first neutral wire 4 to detect the measured module 8. If the copy control module 10 detects that the measured module 8 is not in place, the host computer module 5 sends a command to the copy control module 10 to detect whether the measured module 8 is in place. When the copy control module 10 detects that the measured module 8 is in place, the copy control module 10 responds to the host computer module 5 through the 232 communicator 7. The measured module 8 is in place. The host computer module 5 sends a command to the copy control module 10 through the 232 communicator 7 to start the small current function test. The copy control module 10 sends HPLC carrier signals to the measured module 8 through the first live wire 3 and the first neutral wire 4 to start the small current function test. Since the current of the first live wire 3 is continuously switched, the metering circuit inside the tooling main board module 9 detects the change of the current at this time, and automatically identifies the waveform of the small current. The waveform signal is transmitted to the calculation chip 904 in the tooling main board module 9 through the transmission line 903 through the internal serial peripheral interface 902. The calculation chip 904 analyzes the data of the signal. The tooling main board module 9 transmits it to the host computer module 5 through the 485 communicator 6. The host computer module 5 receives the data of the tooling main board module 9 and makes a data judgment. If so, it is determined that the detection is qualified; if not, it is determined that the detection is unqualified. Since the switching current is determined in this method, the value of the current is always kept constant, and the obtained judgment result is accurate. There is no need to perform multiple detections to accurately determine the result, which improves the detection efficiency of small current signals.

[0028] When the small current branch identification module test tooling system of this solution is working, after the host computer module 5 clicks to start the test, the host computer module 5 sends a signal to detect whether the module under test 8 is in place to the data collector and controller module 10 through the 232 communicator 7. The data collector and controller module 10 continuously sends HPLC carrier signals through the first live wire 3 and the first neutral wire 4 to detect the module under test 8. If the data collector and controller module 10 detects that the module under test 8 is not in place, the host computer module 5 sends an instruction to the data collector and controller module 10 to detect whether the module under test 8 is in place every 500 ms until the detection is successful and the next action is taken. When the data collector and controller module 10 detects that the module under test 8 is in place, the data collector and controller module 10 responds to the host computer module 5 through the 232 communicator 7 that the module under test 8 is in place. The host computer module 5 notifies the tooling main board module 9 to prepare to detect the small current signal through the 485 communicator 6. The host computer module 5 sends an instruction to the data collector and controller module 10 through the 232 communicator 7 to start the small current function test with a frequency of 833 HZ and data of AAE9. The data collector and controller module 10 sends an HPLC carrier signal to the module under test 8 through the first live wire 3 and the first neutral wire 4, and the module under test 8 is required to generate a signal with a frequency of 833 HZ and data of AAE9. The AAE9 signal is generated by the small current circuit of the module under test 8 switching the current at a frequency of 833 HZ. At this time, the small current function test starts. Since the current of the first live wire 3 switches continuously at 833 HZ, the metering circuit inside the tooling main board module 9 detects the change of the current at this time, and automatically identifies the waveform of the small current. The waveform signal is transmitted to the calculation chip 904 in the tooling main board module 9 through the transmission line 903 through the internal serial peripheral interface 902. The calculation chip 904 receives the waveform signal and performs Fourier transform to analyze the data of the signal. The tooling main board module 9 transmits it to the host computer module 5 through the 485 communicator 6. The host computer module 5 receives the data from the tooling main board module 9 and judges whether it is AAE9 data. If it is, the detection is determined to be qualified; if not, the detection is determined to be unqualified. The tooling main board module 9, the data collector and controller module 10, and the host computer module are inserted into the module under test 8 and the electricity meter, and the principle of HPLC power line carrier communication is utilized to fully simulate the actual application scenario on site. The data collector and controller module 10 uses the carrier communication of HPLC to transmit carrier information. The tooling main board module 9 uses the metering circuit to collect the small current characteristic signal, and uses the Fourier transform algorithm to decode the small current characteristic signal, and transmits it to the host computer module 5. The host computer module 5 judges the signal. The traditional communication method of the 485 communicator 6 and the 232 communicator 7 is combined with the power line carrier communication method of HPLC, and the method of combining the power line current metering function and the Fourier algorithm decoding function is designed. It has multiple stable communication channels, reliable acquisition and calculation modules and judgment mechanisms, and has the advantages of stability, low cost and high efficiency.

Claims

1. A test tooling system for a small current branch identification module, characterized in that: It includes a first live wire (3) and a first neutral wire (4). The output ends of the first live wire (3) and the first neutral wire (4) are electrically connected to a module under test (8). The first live wire (3) and the first neutral wire (4) are used for the power supply of the test tooling. The output end of the first live wire (3) is electrically connected to a tooling main board module (9). The tooling main board module (9) is used for measuring the effective values of current and voltage of each phase, power factor, frequency, and phase parameters. The receiving end of the tooling main board module (9) is electrically connected to a second live wire (1), and the receiving end of the tooling main board module (9) is electrically connected to a second neutral wire (2). The second live wire (1) and the second neutral wire (2) are used for the power supply of the board body of the tooling main board module (9). The tooling main board module (9) further includes a metering chip (901). The acquisition end of the metering chip (901) is electrically connected to the output end of the first live wire (3), and the output end of the first neutral wire (4) is electrically connected to the acquisition end of the metering chip (901). The output ends of the second live wire (1) and the second neutral wire (2) are both electrically connected to the receiving end of the metering chip (901). The second live wire (1) and the second neutral wire (2) are used for the power supply of the metering chip (901). The output ends of the first live wire (3) and the first neutral wire (4) are electrically connected to a copy control module (10). The metering chip (901) is used for acquiring the electrical signals transmitted by the first live wire (3) and the first neutral wire (4). The output end of the metering chip (901) is electrically connected to a serial peripheral interface (902). The output end of the serial peripheral interface (902) is electrically connected to a transmission line (903). The output end of the transmission line (903) is electrically connected to a computing chip (904). The output ends of the second live wire (1) and the second neutral wire (2) are electrically connected to the receiving end of the serial peripheral interface (902). The second live wire (1) and the second neutral wire (2) are used for the power supply of the serial peripheral interface (902). The output ends of the second live wire (1) and the second neutral wire (2) are electrically connected to the receiving end of the computing chip (904). The second live wire (1) and the second neutral wire (2) are used for the power supply of the computing chip (904). The output end of the copy control module (10) is electrically connected to a 232 communicator (7).

2. The test tooling system for a small current branch identification module according to claim 1, characterized in that: The output end of the computing chip (904) is electrically connected to a 485 communicator (6). The output end of the 485 communicator (6) is electrically connected to a host computer module (5). The output end of the host computer module (5) is electrically connected to the receiving end of the 232 communicator (7). The output end of the 232 communicator (7) is electrically connected to the receiving end of the copy control module (10).

3. The test tooling system for a small current branch identification module according to claim 1, characterized in that: The chip model of the metering chip (901) is V9203 three-phase metering chip. The metering chip (901) is used for providing the combined phase and the active power, reactive power, apparent power, active energy, and reactive energy of each phase. The metering chip (901) is used for measuring the effective values of current and voltage of each phase, power factor, frequency, and phase parameters.

4. The test tooling system for a small current branch identification module according to claim 1, characterized in that: The chip model of the computing chip (904) is the M481 main chip. The computing chip (904) is used to collect the information collected by the metering chip (901), and the computing chip (904) is used to analyze the information collected by the metering chip (901).

5. A test tooling system for a small current branch identification module according to claim 1, characterized in that: The copying and controlling module (10) is used to detect whether the module to be measured (8) is in place.

6. The test tooling system for a small current branch identification module according to claim 1, characterized in that: The tooling main board module (9) supports the display interface standard.

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