CN218037207U - Relay test platform based on motion characteristic distribution rule - Google Patents

Abstract

The utility model discloses a relay test platform based on action characteristic distribution law, belonging to the technical field of relay test; the intelligent temperature-sensing power supply comprises a load module, a relay, a power module, a temperature sensor, a wiring group, a driving acquisition control unit and a data acquisition and man-machine interface, wherein the load module, the relay and the power module are respectively and electrically connected with the wiring group; the utility model discloses relay test platform, convenient operation not only, the function is abundant moreover. The platform can realize the characteristic of monitoring relay parameters while running, provides a large amount of valuable technical support for field maintenance, provides technical accumulation for determining fault reasons, and provides technical support for improving operation management.

Description

Relay test platform based on motion characteristic distribution rule

Technical Field

The utility model relates to a relay test platform especially relates to a relay test platform based on motion characteristic distribution law, belongs to relay test technical field.

Background

A relay is an electrical control device that has an interactive relationship between a control system (also known as an input loop) and a controlled system (also known as an output loop). The device is generally applied to an automatic control circuit, and plays roles of automatic regulation, safety protection, driving, electrical isolation and the like in the circuit. A large number of relays are used in the subway system to complete corresponding control functions, and the reliability of the relays is required to be very high due to the very high requirement of the subway system on the reliability. The requirement for high reliability of the relay is that high-quality devices are adopted in a design and model selection link, and the analysis and the study and judgment of the state of the relay in the later period are also very important.

The conventional method is used for testing the relay, usually, parameters such as contact resistance, action delay, action voltage (current), return voltage (current), winding resistance and the like of the relay contact are collected, and a fault part or a spare part is tested in an equipment operation and maintenance mechanism, and the condition for primarily measuring the function quality of the relay is usually only provided. For example, when an electromagnetic relay normally operates, clamping stagnation, action delay, attraction failure and the like can occur, but clamping stagnation and delay exist sporadically and uncertainties, and the situation that the failure cause cannot be found out due to low failure recurrence frequency or failure incapability is large, generally, a failure phenomenon is eliminated after a suspected failure part is replaced, normal operation of equipment is maintained, and the phenomenon that a failure device is inaccurately positioned or spare parts are replaced in a transitional manner is easily caused. The critical devices are treated by adopting a regular replacement mode, so that the usable relay is replaced due to the fact that the replacement period is limited, and the maintenance cost is wasted.

In addition, the fault of the relay generally needs to be disassembled to see the defects of the internal parts of the relay on the geometric dimension, the fault is destructive, and generally, special measuring tools such as an oscilloscope and a multimeter are used for checking and measuring the contact points of the relay one by one, so that the troubleshooting is long in time consumption, the measuring error is large, and the measuring result can be inaccurate.

The operation and maintenance of numerous relay control devices faced by subway operation enterprises at present often disturb the operation order due to sudden failure of devices, and have large influence and high maintenance cost. Along with the development of science and technology, more automatic testing devices of electromagnetic relays appear in China, but these detection devices all have the detection cost height, and the check out test set is inflexible, and the relay model that can detect is single, and not strong, unable detection relay action time delay characteristic's uniformity to multiple model relay adaptability, there is very strong limitation at subway equipment operation and maintenance in-process.

The performance of the relay as an electric control device of the subway equipment determines the reliability of the system. The invention discloses a relay test platform, which aims to find out the reasons of faults, analyze the service life and fatigue characteristics of a relay, improve the reliability of a system where the relay is located and reduce the equipment fault occurrence rate.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of above-mentioned prior art, the utility model provides a relay test platform based on action characteristic distribution law.

The utility model adopts the technical proposal that: designing a relay test platform based on an action characteristic distribution rule, which comprises a load module, a relay, a power module, a temperature sensor, a wiring group, a drive acquisition control unit and a data acquisition and man-machine interface, wherein the load module, the relay and the power module are respectively and electrically connected with the wiring group, the temperature sensor and the wiring group are respectively and electrically connected with the drive acquisition control unit, the temperature sensor is arranged close to the relay, the test platform acquires the temperature/environment temperature of a relay coil through the temperature sensor and can display and record the temperature/environment temperature of the coil, the drive acquisition control unit consists of an embedded system with an MCU (microprogrammed control unit) as a core, the drive acquisition control unit is connected with the data acquisition and man-machine interface through a communication line to realize data bidirectional transmission, the data acquisition and man-machine interface consists of hardware and software, the hardware is realized by an industrial computer, and the wiring group is in a matrix type; the matrix type wiring effectively avoids the overlapping and winding of wires, improves the wiring efficiency, reduces the probability of wire mixing and wire staggering, and is easy to switch different loads for testing; the testing device has the advantages that the testing of the relay action characteristics of the relay group, the relays and the contacts is realized, the defect that a single relay is tested one by one is effectively overcome, the fatigue characteristics and the service life of the relay group are tested flexibly and conveniently, and the universality is extremely strong.

The relay test platform can control the relay under set parameters, collects important data such as contact actuation release delay and the like, and can display the maximum value, the minimum value, the average value, the contact action times, an actuation delay distribution diagram and a release delay distribution diagram of each contact actuation delay/release delay of the relay in real time.

Furthermore, the wiring group comprises fixed wiring, a plurality of disconnectable terminal blocks are connected in series on the fixed wiring, and external equipment is convenient to connect.

Further, the wiring group still includes portable wiring and miniature circuit breaker (play short circuit or overcurrent protection's MCB), miniature circuit breaker sets up and is connected one end in fixed wiring and drive acquisition control unit, load module, relay, power module are connected with the terminal row that can break through portable wiring respectively.

Furthermore, the wiring group also comprises a DIN guide rail, and the temperature sensor, the load module, the relay and the power supply module are respectively arranged on the DIN guide rail, so that the installation, integration and test operation of components and parts are convenient.

Furthermore, the drive acquisition control unit comprises an output drive module, a signal acquisition module and a data return module.

Furthermore, the data acquisition and human-computer interface comprises a data acquisition and storage unit, a test parameter setting unit and a data visualization unit, and the data acquisition and storage unit can ensure that the equipment runs for a long time and has a power-down storage function. Even if power failure and the like are happened in a test task for several days or even weeks, test data can be ensured not to be lost, and repeated tests caused by power failure or unstable power supply are avoided. The test parameter setting unit realizes repeated test (load or no-load) and recording of each parameter of the relay, highly visualized action characteristic distribution is formed after the discrete data expressed by each parameter in repeated tests is processed by a specific mathematical tool of the data visualization unit, and the current state of the relay can be indirectly obtained by studying and judging the action characteristic distribution, so that the on-site equipment maintenance work is guided.

When the relay test platform works specifically, the relay is installed on a DIN guide rail, a relay coil is connected to an output wiring terminal of a drive acquisition control unit through a lead, a corresponding external drive power supply and an analog load (combined with an application field) are configured for a single relay or a relay group, and meanwhile, each acquisition point is connected to a specific detection terminal. Test parameters corresponding to the configuration of the human-computer interface are acquired through data, a communication cable is connected, and the relay can be tested by clicking to start the test.

In the test process, the system can automatically calculate and display the action times and the average values of time delay and attraction of each contact, the action characteristic distribution map of each contact can be seen through the image control (data visualization unit) function of the data acquisition and human-computer interface, the current state of the relay can be preliminarily judged according to the action characteristic distribution map and other real-time parameters, the data stored in the background can completely record the action time and each acquisition parameter in each time in the whole test process, and a complete analysis material is provided.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The utility model discloses relay test platform can control the relay under the parameter of setting for, gathers important data such as contact actuation release time delay, coil temperature, realizes that the probability distribution of key parameter under the repetitious conditions is visual many times, and each item parameter under the action condition of synchronous storage every time is in order to be equipped with the backstage analysis. And contact voltage and current waveform diagrams of multiple groups of contacts can be synchronously observed. The method comprises the steps of monitoring and storing relay characteristic parameters, autonomously setting threshold values, delay time, regulating action times, recording failure time and the like, performing statistical analysis on collected delay and abnormal clamping stagnation data, and deducing the current state of relay equipment by observing the parameter distribution rule of each action parameter of the relay after repeated times.

(2) In order to achieve convenient wiring and clear circuit in the testing process, realize short circuit automatic protection and measure various electrical parameters in the testing circuit, a matrix-like wiring table is designed for rapidly deploying testing devices and auxiliary devices thereof, conveniently establishing an electrical loop, visually checking the circuit and carrying out experiments. Meanwhile, a matrix wiring group is adopted, the matrix principle is introduced into wiring, the matrix wiring facilitates various relays to be connected into a test circuit, and the process that equipment such as a universal meter and an oscilloscope is connected with the relays to measure other parameters is greatly simplified.

(3) The utility model discloses relay test platform, convenient operation not only, the function is abundant moreover, both can carry out the test analysis to trouble relay group, can carry out the analysis verification for the lectotype of novel relay again. The platform can realize the characteristic of monitoring the relay parameter while running, provides a great amount of valuable technical support for field maintenance, and simultaneously provides technical support for the promotion of operation management.

(4) The testing platform realizes the relay action characteristic test of the relay group, the relays and the contacts, effectively avoids the defect that a single relay is tested one by one, and is flexible, convenient and extremely high in universality for the fatigue characteristic and the service life of the relay group. The reason analysis can be effectively carried out to trouble relay group, also can carry out the analysis verification to the lectotype of novel relay.

(5) This test platform can carry out no-load experiment again and can carry out the area experiment to test relay contact performance, no-load experiment can obtain the mechanical life of relay, and the area carries the experiment and can obtain the electric life of relay.

(6) The utility model discloses test platform can constantly survey the parameter of relay equipment actual state, carries out analysis, judgement to the parameter of surveying, makes the evaluation whether break down and trouble type, fault degree; and (4) estimating the development trend of the relay state, judging the fault reason or estimating the optimal maintenance opportunity. The running state of the equipment can be indirectly analyzed, the occurrence period of abrasion and aging is found, and a corresponding maintenance plan is formulated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic layout diagram of the present invention.

Fig. 2 is a schematic diagram of the data acquisition and human-computer interface module of the present invention.

In the figure: the system comprises a load module 1, a relay 2, a power supply module 3, a drive acquisition control unit 4, a data acquisition and human-computer interface 5, a fixed wiring 6, a disconnectable terminal row 7, a movable wiring 8, a miniature circuit breaker 9 and a DIN guide rail 10.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1: a relay test platform based on an action characteristic distribution rule comprises a load module 1, a relay 2, a power module 3, a temperature sensor, a wiring group, a driving acquisition control unit 4 and a data acquisition and man-machine interface 5, wherein the driving acquisition control unit 4 comprises an output driving module, a signal acquisition module and a data return module; the data acquisition and man-machine interface 5 comprises a data acquisition and storage unit, a test parameter setting unit and a data visualization unit. Load module 1, relay 2 and power module 3 are connected with wiring group electricity respectively, temperature sensor and wiring group are connected with 4 electricity of drive collection the control unit respectively to relay coil setting is pressed close to temperature sensor, drive collection the control unit 4 and data acquisition and human-computer interface 5 pass through the communication line and are connected, wiring group is the matrix and lays wire.

The wiring group includes fixed wiring 6, movable wiring 8, miniature circuit breaker 9 and DIN guide rail 10, be connected with a plurality of terminal row 7 that can break on the fixed wiring 6, be connected with a miniature circuit breaker 9 on the fixed wiring 6, miniature circuit breaker 9 sets up and is connected one end in fixed wiring 6 and drive acquisition control unit 4, load module 1, relay 2, power module 3 are connected with terminal row 7 that can break through movable wiring 8 respectively. The temperature sensor, the load module 1, the relay 2 and the power module 3 are respectively installed on the DIN guide rail 10 and are integrated into a whole.

As shown in fig. 2: the data acquisition and man-machine interface 5 comprises a hardware part and a software part, the hardware adopts an industrial computer and at least comprises a main control unit, and the main control unit is connected with a communication interface, an acquisition circuit input and a drive circuit output; meanwhile, the main control unit controls and collects the operation information of the relay coil, the relay contact and the load; the software part can display characteristic parameters of pull-in delay/release delay of each contact of the relay in real time and the like; the system is matched with hardware and has the functions of database operation (collected data storage), test parameter setting, test parameter distribution rule display and the like.

The relay test platform of the embodiment can realize the characteristics of monitoring the relay parameters while running by combining with an independently developed algorithm, and realizes the relay action characteristic test of a relay group, a plurality of relays and a plurality of contacts; the fatigue characteristic and the service life of the relay set can be tested, and the method is flexible, convenient and highly universal; the reason analysis can be effectively carried out on the fault relay group, and the type selection of the novel relay can also be analyzed and verified; the test platform can be used for carrying out no-load experiments and on-load experiments. Meanwhile, a matrix wiring group is adopted, the matrix principle is introduced into wiring, various relays are convenient to access into the testing circuit through the matrix wiring, and the process that equipment such as a universal meter and an oscilloscope is connected with the relays to measure other parameters is greatly simplified.

The drive acquisition control part of the relay test platform consists of an embedded system with an MCU as a core and has the functions of output drive, signal acquisition, data return and the like. The overlapping and winding of wires are effectively avoided in matrix type wiring, the wiring efficiency is improved, the probability of mixed wires and wrong wires is reduced, and different loads are easily switched to test. The testing device has the advantages that the testing of the relay action characteristics of the relay group, the relays and the contacts is realized, the defect that a single relay is tested one by one is effectively overcome, the testing of the service life and the fatigue characteristics of the relay group is flexible and convenient, and the universality is extremely strong. The test platform can be used for carrying out no-load experiments and on-load experiments. The test system realizes repeated test (load or no-load) and recording of each parameter of the relay, forms a highly visual action characteristic distribution diagram after being processed by a specific mathematical tool, and can indirectly obtain the current state of the relay by studying and judging the action characteristic distribution so as to guide the field equipment maintenance work. Through an independently developed algorithm, the collected delay and jamming data can be analyzed and calculated to obtain a Gaussian kernel distribution diagram of relay contact delay, and whether the relay breaks down or not is judged according to the distribution rule of the Gaussian kernel distribution diagram; meanwhile, the influence of the temperature rise of the coil on the action delay of the relay can be obtained. The data monitored by the test platform is combined with an independently developed algorithm to obtain the distribution characteristic of the relay action, so that whether the relay breaks down or delays is judged, and the relay is visual and highly persuasive.

The present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit and scope of the present invention.

Claims (6)

1. The utility model provides a relay test platform based on motion characteristic distribution rule which characterized in that: including load module (1), relay (2), power module (3), temperature sensor, wiring group, drive collection control unit (4) and data acquisition and human-computer interface (5), load module (1), relay (2) and power module (3) are connected with wiring group electricity respectively, temperature sensor and wiring group gather control unit (4) electricity with the drive respectively and are connected to temperature sensor presses close to the relay setting, drive collection control unit (4) are connected through the communication line with data acquisition and human-computer interface (5), wiring group is the matrix wiring.

2. The relay test platform based on the action characteristic distribution rule of claim 1, wherein: the wiring group comprises a fixed wiring (6), and a plurality of disconnectable terminal strips (7) are connected to the fixed wiring (6).

3. The relay test platform based on the action characteristic distribution rule of claim 2, wherein: the wiring group is still including portable wiring (8) and miniature circuit breaker (9), miniature circuit breaker (9) set up and gather the control unit (4) in fixed wiring (6) and drive and be connected one end, load module (1), relay (2), power module (3) are connected with terminal row (7) that can break through portable wiring (8) respectively.

4. The relay test platform based on the action characteristic distribution rule of claim 3, wherein: the wiring group further comprises a DIN guide rail (10), and the temperature sensor, the load module (1), the relay (2) and the power module (3) are respectively installed on the DIN guide rail (10).

5. The relay test platform based on the action characteristic distribution rule according to any one of claims 1 to 4, wherein: the drive acquisition control unit (4) comprises an output drive module, a signal acquisition module and a data return module.

6. The relay test platform based on the action characteristic distribution rule of claim 5, wherein: the data acquisition and man-machine interface (5) comprises a data acquisition and storage unit, a test parameter setting unit and a data visualization unit.

Images