CN-122017329-A - Intelligent wiring terminal equipment integrating multi-parameter detection and state monitoring method

CN122017329ACN 122017329 ACN122017329 ACN 122017329ACN-122017329-A

Abstract

The application relates to the technical field of intelligent monitoring, in particular to intelligent wiring terminal equipment integrating multi-parameter detection and a state monitoring method, wherein the equipment comprises a main control module, and a voltage measurement module, an infrared temperature measurement module and a pressure detection module which are respectively connected with the main control module, wherein the voltage measurement module is used for attenuating high voltages at two ends of a metal terminal to a safe range in proportion, conducting impedance isolation and then transmitting the high voltages to the main control module, the infrared temperature measurement module is used for non-contact detection of the temperature of a metal terminal contact and transmitting the temperature to the main control module, the pressure detection module is used for detecting a pressure signal representing the fastening state of a wire pressing screw, and the main control module is used for processing and cooperatively analyzing the received voltage, temperature and pressure signals so as to realize comprehensive monitoring and fault early warning of the connection state of the metal terminal. The main control module is used for cooperatively processing the multi-source signals, so that misjudgment risks of single parameter monitoring are avoided.

Inventors

CHEN HAO
JIA YUJIAN
ZHANG RUIZHE
LI YUAN
ZHANG JIAQI
YU SHANHAI
GAO TIEZHU

Assignees

山东鲁软数字科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260212

Claims (10)

1. The intelligent wiring terminal equipment integrating the multi-parameter detection comprises an insulating shell, a metal terminal, a wire pressing screw, a main control module, a voltage measurement module, an infrared temperature measurement module and a pressure detection module, wherein the voltage measurement module, the infrared temperature measurement module and the pressure detection module are respectively connected with the main control module; The voltage measurement module is used for proportionally attenuating the high voltages at the two ends of the metal terminal to a safe range and transmitting the high voltages to the main control module after impedance isolation; The infrared temperature measurement module is used for non-contact detection of the temperature of the metal terminal contact and sending the temperature to the main control module; The pressure detection module is used for detecting a pressure signal representing the fastening state of a line pressing screw, and comprises a resistance type strain gauge and a strain measuring circuit, wherein the resistance type strain gauge is adhered to the bottom stress position of the metal terminal, and is connected into a Wheatstone bridge formed by the strain measuring circuit; the main control module is used for processing and cooperatively analyzing the received voltage, temperature and pressure signals so as to realize comprehensive monitoring and fault early warning of the connection state of the metal terminals.
2. The intelligent wiring terminal device for integrated multi-parameter detection according to claim 1, wherein the strain force measurement circuit converts a resistance strain gauge deformation resistor into a voltage signal through kirchhoff's law and a wheatstone bridge structure, converts the voltage signal into a digital pulse signal through a two-channel pressure converter, and sends the digital pulse signal to a main control module for processing, and the fastening state of a wire pressing screw is judged according to the processing result.
3. The integrated multi-parameter detection intelligent terminal device of claim 2, wherein the two resistive strain gages are a first resistive strain gage and a second resistive strain gage, respectively; The strain force measurement circuit comprises a Wheatstone bridge structure consisting of a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15 and a resistor R16; One end of the first resistance strain gauge is connected with a second power supply, and the other end of the first resistance strain gauge is grounded through a fuse F4 and a resistor R12, one end of the resistor R11 is connected to the second power supply, and the other end of the resistor R11 is grounded through a resistor R13; One end of the second resistance strain gauge is connected to the second power supply, and the other end of the second resistance strain gauge is grounded through a fuse F6 and a resistor R15, and one end of the resistor R14 is connected to the second power supply, and the other end of the second resistance strain gauge is grounded through a resistor R16; The two output channels of the Wheatstone bridge structure are respectively connected to the two input channels of the two-channel pressure converter, the power end of the two-channel pressure converter outputs a second power supply to supply power to the resistance strain gauge through the voltage stabilizing circuit, the output end of the two-channel pressure converter is connected to the main control module, and the main control module judges the fastening state of the line pressing screw according to the digital pulse signals output by the two-channel pressure converter.
4. The intelligent wiring terminal device for integrated multiparameter detection according to claim 1, wherein the voltage measurement module comprises two input channels with the same circuit structure, wherein the two input channels are respectively suitable for voltage monitoring of different terminals; The input of one input channel comes from the input interface J6 of high voltage signal, and input interface J6 is connected with multistage bleeder circuit through fuse F1, multistage bleeder circuit includes series connection's resistance R6, resistance R7, resistance R23, resistance R7 and resistance R23's tie point is connected with first power through resistance R22, resistance R23 and resistance R7's tie point is still through filter capacitor C20 ground, resistance R6 and resistance R7's tie point is connected to voltage follower's forward input, voltage follower's reverse input and output are connected, voltage follower's power supply is connected to first power, voltage follower's forward input still is grounded through zener diode D1, voltage follower's output is connected to main control module.
5. The intelligent binding post equipment integrating multi-parameter detection according to claim 1, further comprising a communication module and a power supply module, wherein the input end of the communication module is connected with the output end of the main control module, and is used for uploading the monitoring data processed by the main control module to an upper system; The power module supplies power to the main control module, the voltage measurement module, the infrared temperature measurement module, the pressure detection module and the communication module respectively.
6. The intelligent terminal device of claim 5, further comprising a bicolor indicator connected to the main control module for displaying device status or fault information according to the determination result of the main control module.
7. The intelligent terminal device of claim 1, wherein the main control module is configured to cooperatively analyze and process the multi-source signal, and the specific process is as follows: performing time sequence alignment and data filtering processing on the voltage signal, the temperature signal and the pressure signal to eliminate noise interference; comparing the processed voltage signal with a preset normal voltage range, and judging that the voltage is abnormal if the voltage exceeds the range; comparing the processed temperature signal with a preset temperature alarm threshold value, and judging that the temperature is abnormal if the processed temperature signal exceeds the threshold value; analyzing the processed pressure signal, including calculating the difference between the current pressure value and the preset qualified fastening pressure reference value, and/or analyzing the change trend of the pressure signal in a set time window, and judging that the pressure is abnormal if the difference exceeds the allowable deviation range or the change trend shows that the pressure continuously drops; And generating a comprehensive state zone bit according to the judging result, wherein the zone bit at least comprises three state information of normal/abnormal voltage, normal/abnormal temperature and normal/abnormal pressure.
8. The intelligent terminal device of claim 7, wherein the main control module is further configured to execute a predetermined fault logic determination rule according to the comprehensive status flag, the rule comprising: a) If only the pressure signal is judged to be abnormal, screw loosening early warning information is generated, and the early warning level is a prompt level; b) If the temperature signal is judged to be abnormal, generating over-temperature alarm information no matter the state of other signals, wherein the early warning level is an emergency level; c) If the voltage signal is judged to be abnormal, generating voltage abnormality alarm information, and determining an early warning grade according to the abnormality type; d) If the pressure signal abnormality and the temperature signal abnormality occur simultaneously, generating comprehensive fault alarm information of overheat caused by connection looseness, wherein the early warning level is an emergency level.
9. The intelligent terminal device for integrated multiparameter detection according to claim 1, further comprising a slider detection module, wherein an output end of the slider detection module is connected to the main control module, and is configured to detect a connection or disconnection state of a slider in the middle of the metal terminal, and transmit the state signal to the main control module; the trigger mechanism of the slider detection module is mechanically coupled to the moving part of the slider such that the electrical contact state of the slider detection module is changed when the slider is switched between the on position and the off position.
10. A terminal status monitoring method based on the intelligent terminal apparatus of any one of claims 1 to 9, characterized by comprising the steps of: S1, acquiring voltage signals at two ends of a metal terminal in real time through a voltage measurement module; s2, acquiring temperature signals of the metal terminal contacts in real time in a non-contact mode through an infrared temperature measuring module; s3, acquiring a pressure signal representing the fastening state of the line pressing screw in real time through a pressure detection module; The method comprises the steps of S4, a main control module receives a voltage signal, a temperature signal and a pressure signal, and performs collaborative analysis and processing on the multi-source signal, wherein the method specifically comprises the steps of comparing the voltage signal with a preset normal voltage range, judging whether voltage abnormality occurs, comparing the temperature signal with a preset temperature threshold, judging whether temperature abnormality occurs, analyzing the change trend of the pressure signal or comparing the pressure signal with the preset pressure threshold, and judging whether a line pressing screw is loosened or not enough in fastening force; and S5, judging whether the connection state of the metal terminal is abnormal or not based on the analysis processing result, and generating fault early warning information when judging the abnormality.

Description

Intelligent wiring terminal equipment integrating multi-parameter detection and state monitoring method Technical Field The application relates to the technical field of intelligent monitoring, in particular to intelligent wiring terminal equipment integrating multi-parameter detection and a state monitoring method. Background The connecting terminal is used as a core basic element for electric connection and has the functions of stabilizing a connecting wire and guaranteeing reliable transmission of current and voltage signals. The traditional binding post adopts the mechanical combination of metal conducting strip and insulating housing, and the function is single, does not possess any state sensing ability. In actual operation, the hidden troubles of terminal overheating, poor contact, unstable connection, wiring error and the like are easily caused due to the reasons of increased contact resistance, overcurrent load, loosening of screws, electrochemical corrosion of different metals and the like. If the insulation is not found and processed in time, insulation aging is accelerated, signal transmission is interrupted, and even an electrical fire is caused. Attempts have been made in the prior art to improve upon such as monitoring high temperatures by incorporating temperature sensors in the terminal strip or by using pressure sensors to detect whether the screw is tightened. However, these solutions have a single function, can only solve specific problems, and generally do not have a data remote reporting function, and are complex to install or have potential safety hazards. More importantly, the capability of synchronously collecting and cooperatively analyzing multiple parameters such as voltage, temperature, pressure and the like is lacking, comprehensive, intelligent and real-time monitoring and early warning of the running state of the wiring terminal cannot be realized, manual periodic inspection is still highly relied on, high maintenance cost and response lag are caused, and the requirement of intelligent operation and maintenance of a modern power system cannot be met. Disclosure of Invention In order to solve the problems, the invention provides intelligent wiring terminal equipment integrating multi-parameter detection and a state monitoring method, which realize real-time monitoring and fault early warning of the operation state of the wiring terminal, thereby solving the problems that the traditional wiring terminal cannot automatically detect the operation state, lacks data reporting capability, has low safety, high maintenance cost and the like. In a first aspect, the technical scheme of the invention provides intelligent wiring terminal equipment integrating multi-parameter detection, which comprises an insulating shell, a metal terminal, a wire pressing screw, a main control module, a voltage measurement module, an infrared temperature measurement module and a pressure detection module, wherein the voltage measurement module, the infrared temperature measurement module and the pressure detection module are respectively connected with the main control module; The voltage measurement module is used for proportionally attenuating the high voltages at the two ends of the metal terminal to a safe range and transmitting the high voltages to the main control module after impedance isolation; The infrared temperature measurement module is used for non-contact detection of the temperature of the metal terminal contact and sending the temperature to the main control module; The pressure detection module is used for detecting a pressure signal representing the fastening state of a line pressing screw, and comprises a resistance type strain gauge and a strain measuring circuit, wherein the resistance type strain gauge is adhered to the bottom stress position of the metal terminal, and is connected into a Wheatstone bridge formed by the strain measuring circuit; the main control module is used for processing and cooperatively analyzing the received voltage, temperature and pressure signals so as to realize comprehensive monitoring and fault early warning of the connection state of the metal terminals. The detection module and the main control module of three key physical quantities of voltage, temperature and pressure are integrated in the single wiring terminal equipment, so that the crossing from passive connection to active sensing is realized, and the real-time state monitoring and preliminary fault diagnosis capability of the traditional wiring terminal are provided. The infrared non-contact temperature measurement is arranged, so that the electrical safety risk of direct contact temperature measurement on the high-voltage electrified body is effectively avoided. By monitoring the fastening force of the line pressing screw, the problem of screw loosening caused by vibration, expansion due to heat, contraction due to cold and the like can be found in advance, and early warning is carried out bef