CN-122017534-A - Detection system and method for microcomputer protection device

CN122017534ACN 122017534 ACN122017534 ACN 122017534ACN-122017534-A

Abstract

The invention relates to the technical field of microcomputer protection device detection, in particular to a detection system and method of a microcomputer protection device, comprising a computer host, upper computer software and a detection device, wherein the detection device is connected with the computer host through at least one industry standard interface, the detection device is electrically connected with the microcomputer protection device to be detected and then detects the microcomputer protection device to be detected, the upper computer software runs on the computer host and is used for controlling the detection device according to a preset detection flow, the detection device and the microcomputer protection device to be detected are used for carrying out interaction of digital signals and analog signals, and can analyze the digital signals and the analog signals fed back by the microcomputer protection device to be detected to complete automatic detection of a hardware circuit in the microcomputer protection device to be detected, and the detection device comprises a combinable probe which is correspondingly connected with an external terminal of the microcomputer protection device to be detected and is electrically connected with the computer host through a board card inside the detection device.

Inventors

BI JIANGUANG
LI DAXIANG
REN ZHIQIANG
BI LUCHAO
WANG XIAOPENG

Assignees

北京北斗银河科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260225

Claims (10)

1. The detection system of the microcomputer protection device is characterized by comprising a computer host, upper computer software and a detection device, wherein the detection device is connected with the computer host through at least one industry standard interface, and the detection device is electrically connected with the microcomputer protection device to be detected and then detects the microcomputer protection device to be detected; The upper computer software is operated on the computer host and used for controlling the detection device according to a preset detection flow, the upper computer software and the microcomputer protection device to be detected perform data interaction through a standard Modbus-RTU protocol, the detection device and the microcomputer protection device to be detected perform interaction of digital signals and analog signals, and the digital signals and the analog signals fed back by the microcomputer protection device to be detected can be analyzed to complete automatic detection of hardware circuits in the microcomputer protection device to be detected; the detection device comprises a combinable probe (2), the combinable probe (2) is correspondingly connected with an external terminal of the microcomputer protection device to be detected, and the combinable probe (2) is electrically connected with a computer host through a board card inside the detection device.
2. The detection system of the microcomputer protection device according to claim 1, wherein the combinable probe (2) comprises a power supply probe set, a digital signal generation probe set, an analog signal generation probe set and a signal acquisition probe set which are mutually independent, wherein the power supply probe set supplies power to the microcomputer protection device to be detected, the digital signal generation probe set realizes generation of digital signals, the analog signal generation probe set realizes generation of analog signals, and the signal acquisition probe set is used for receiving the digital signals and the analog signals fed back by the microcomputer protection device to be detected; the industry standard interface comprises at least one of a DB37 interface and an RS485 interface.
3. The detection system of the microcomputer protection device according to claim 1, wherein a multifunctional data acquisition card is arranged in the computer host, a PCI board is arranged outside the detection device, a Total board, a 4-20mA communication board and a signal source board are arranged inside the detection device, the multifunctional data acquisition card is electrically connected with the PCI board, the PCI board is electrically connected with the Total board inside the detection device and used for realizing data transmission between the multifunctional data acquisition card and the Total board, the Total board is electrically connected with the 4-20mA communication board, the signal source board and the combinable probe (2) respectively, and the 4-20mA communication board, the signal source board and the combinable probe (2) realize signal interaction through the Total board.
4. The detection system of the microcomputer protection device according to claim 1, wherein the detection device further comprises a pull rod (1), a fixing module (3) and an upper cover plate (4), the upper cover plate (4) is installed on a host case of the detection device, the fixing module (3) is installed on the upper cover plate (4), the microcomputer protection device to be detected is installed on the fixing module (3), the pull rod (1) is installed on one side of the upper cover plate (4), the combinable probe (2) is installed at one end of the pull rod (1), and the pull rod (1) can drive the combinable probe (2) to translate on the upper cover plate (4).
5. A microcomputer protection device detection method based on the detection system according to any one of claims 1-4, characterized by comprising the steps of: S1, detecting EEPROM of a device to be detected by upper computer software through a detection device; s2, detecting Flash of the device to be detected by the upper computer software through the detection device; s3, detecting LCD of the device to be detected by the upper computer software through the detection device; s4, the upper computer software detects a KEY (KEY) of the device to be detected through the detection device; s5, the upper computer software detects the LED lamp of the device to be detected through the detection device; S6, the upper computer software detects a digital signal input (on) pin and a digital signal output (on) pin of the device to be detected through the detection device; S7, detecting an analog signal acquisition (ADC sampling) function of the device to be detected by the upper computer software through the detection device; S8, detecting an analog signal generation (4-20 mA output) function of the device to be detected by the upper computer software through the detection device; And S9, the upper computer software automatically records the results of all detection items and judges whether the microcomputer protection device to be detected is qualified or not according to a preset standard.
6. The method according to claim 5, wherein the upper computer software sends a memory self-test command and a communication interface dedicated test command to the microcomputer protection device to be tested through the detection device at the beginning of detection, comprehensively judges whether the communication interface is normal according to the return results of the two sets of commands, and when judging that the communication interface is abnormal, suspends the subsequent detection flow and records the detection result of the finished detection item.
7. The method for detecting microcomputer protection device according to claim 6, wherein the upper computer software outputs different logic states to the digital signal input pin of the microcomputer protection device to be detected through the detecting device, reads the corresponding input states through the communication interface to complete closed loop detection of the digital signal, and judges that the digital signal input function is normal when the read input states are consistent with the output logic states; The upper computer software controls the digital signal output state of the microcomputer protection device to be tested, the detection device collects the state of the output pin of the microcomputer protection device to be tested so as to finish closed loop detection of digital signal output, and when the collected output state is consistent with the controlled output state, the digital signal output function is judged to be normal.
8. The method according to claim 6, wherein the upper computer software controls the detecting device to output standard analog signals to an analog signal acquisition pin of the microcomputer protecting device to be detected, and reads corresponding sampling data through the communication interface to detect an analog signal acquisition function.
9. The method according to claim 8, wherein the upper computer software calculates a correction parameter according to the read analog signal sampling data, writes the correction parameter into an internal parameter of the microcomputer protection device to be tested, and then performs the detection again to determine whether the preset error range is satisfied.
10. The method according to claim 6, wherein the upper computer software controls the detecting device to detect the 4-20mA analog signal output function of the microcomputer protecting device to be detected, and calculates and verifies the correction parameters in the 4mA and 20mA output states, respectively.

Description

Detection system and method for microcomputer protection device Technical Field The invention relates to the technical field of detection of microcomputer protection devices, in particular to a detection system and method of a microcomputer protection device. Background The microcomputer protection device is used as core equipment for guaranteeing safe and stable operation of the power system, and the performance and reliability of the microcomputer protection device are directly related to the overall safety of the power grid. Therefore, before the device is shipped, it must be thoroughly and strictly tested. Along with the continuous expansion of the scale of the power system in China and the continuous improvement of the intelligent level, the functional requirements on the microcomputer protection device are increased. In order to meet the operation requirement of a complex power grid, the modern microcomputer protection device integrates more advanced protection, monitoring, communication and control functions, the hardware structure of the modern microcomputer protection device tends to be complex, and the number of acquisition ports and output ports is increased obviously. On the one hand, the comprehensive performance of the device is improved, on the other hand, the number of detection projects of a factory is increased, the detection flow is heavy, and higher requirements are put on the coverage and efficiency of the test. However, in the current actual detection work, the tests of the hardware circuit and the functions of each port still rely on a great deal of inspectors to perform manual operation, visual observation and manual judgment. The traditional detection mode is time-consuming and labor-consuming, subjective errors are easily introduced due to fatigue or experience difference of personnel, efficiency bottlenecks are increasingly prominent when the detection is conducted on a large number of devices with multiple types, and the requirements of modern production rhythm and power systems on equipment for quick operation are difficult to adapt. In the prior art, a microcomputer protection device detection system integrating automatic closed-loop detection, modularized probe adaptation and online calibration functions cannot meet the requirements of efficiency and precision of batch detection. Under the above circumstances, in order to overcome the above technical problems, the present invention provides a detection system and method for a microcomputer protection device, which solves the above technical problems. Disclosure of Invention The invention aims to provide a detection system and a detection method of a microcomputer protection device, which solve the technical problems of low efficiency, large error, poor universality and the like caused by the fact that the detection of the conventional microcomputer protection device depends on manual operation. In order to achieve the technical purpose, the invention provides the following technical scheme: the detection system of the microcomputer protection device comprises a computer host, upper computer software and a detection device, wherein the detection device is connected with the computer host through at least one industry standard interface, and is electrically connected with the microcomputer protection device to be detected and then used for detecting the microcomputer protection device to be detected; The upper computer software is operated on the computer host and used for controlling the detection device according to a preset detection flow, the upper computer software and the microcomputer protection device to be detected perform data interaction through a standard Modbus-RTU protocol, the detection device and the microcomputer protection device to be detected perform interaction of digital signals and analog signals, and the digital signals and the analog signals fed back by the microcomputer protection device to be detected can be analyzed to complete automatic detection of hardware circuits in the microcomputer protection device to be detected; The detection device comprises a combinable probe, the combinable probe is correspondingly connected with an external terminal of the microcomputer protection device to be detected, and the combinable probe is electrically connected with a computer host through a board card inside the detection device. As one of preferred embodiments, the combinable probes include a power supply probe set, a digital signal generation probe set, an analog signal generation probe set, and a signal acquisition probe set that are independent of each other; The power supply probe set supplies power to the microcomputer protection device to be tested, the digital signal generation probe set realizes generation of digital signals, the analog signal generation probe set realizes generation of analog signals, and the signal acquisition probe set is used for receiving the digital signals and the analog signals