Test platform of electric heat storage device control system

Abstract

The invention relates to the technical field of electric heating control, and provides a test platform of a heat storage type electric heating device control system, which comprises an intelligent control unit, a signal generation module, a communication simulation module and a monitoring module. The intelligent control unit controls the signal generation module to generate various simulation signals according to preset scripts or manually, the simulation signals are transmitted to the tested control system, the monitoring module monitors and collects output response of the tested control system, and therefore whether control logic and functions of the tested control system meet design requirements or not is evaluated. The platform integrates various signal generating and monitoring assemblies, has communication simulation capability, covers automatic testing and calibration of various heat storage type electric heating device control systems with PLCs, single-chip microcomputers and the like as cores, is accurate and visual in testing result, remarkably shortens the testing time in product research, development and manufacturing, reduces the testing cost, and improves the testing efficiency. And the test efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric heating control, and particularly relates to a test platform for testing a control system of a heat storage type electric heating device. BACKGROUND

[0002] The heat storage type electric heating device is increasingly widely applied due to its high energy efficiency, stable operation, peak load shifting and other advantages, and the customization demand of users for control functions is also increasing. In the research and manufacturing process, the functions of the control system with PLC, single-chip microcomputer and the like as the core need to be verified and tested. The traditional test method usually needs to build a physical test environment or directly test the finished product, some physical quantities such as temperature change slowly in the test process, and some physical quantities such as leakage current will not exceed the standard in the normal state, a long time and complex operation are needed to complete one test, the hardware cost is high, and if the program is modified for retest, the whole test time is longer.

[0003] Therefore, a universal test platform is needed to reduce the time and economic cost of control system testing. SUMMARY

[0004] The present application aims to solve the problems of long test period, high cost and low efficiency of the control system of the heat storage type electric heating device in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides a test platform for the control system of an electric heat storage device, comprising: an intelligent control unit, a signal generation module, a communication simulation module and a monitoring module. The intelligent control unit generates various simulation signals according to a predetermined script or manually controls the signal generation module to generate various simulation signals, which are transmitted to the control system under test, and the monitoring module listens to and collects the output response of the control system under test, so as to evaluate whether the control logic and function of the control system under test meet the design requirements. The platform integrates a variety of signal generation and monitoring components, has communication simulation capability, covers the automatic testing and calibration of various heat storage type electric heating device control systems with PLC, single-chip microcomputer and the like as the core, the test results are accurate and intuitive, the test time in product research and manufacturing is significantly shortened, the test cost is reduced, and the test efficiency is improved.

[0006] A test platform for the control system of a heat storage type electric heating device, comprising:

[0007] A signal generation module for generating a plurality of types of simulation signals to simulate external input signals collected by the control system under test;

[0008] A monitoring module for listening to and collecting the output response of the control system under test;

[0009] A communication simulation module for simulating external signals received by the control system under test through a communication interface;

[0010] An intelligent control unit is configured to control the signal generation module, the monitoring module and the communication simulation module, and automatically execute a test procedure.

[0011] Further, the signal generation module comprises one or more switching value generation components, one or more analog value generation components and a leakage current generation component, which are respectively configured to provide switching value signals, analog value signals and leakage current signals to the control system under test.

[0012] Further, the monitoring module comprises one or more switching value monitoring components and one or more analog value monitoring components.

[0013] Further, the interface of the communication simulation module is one or more of a serial interface (RS-485, RS-232) or a standard Ethernet (TCP / IP).

[0014] Further, the test platform further comprises a power module configured to complete an AC / DC function and provide power to each module of the test platform.

[0015] Further, the intelligent control unit is provided with a computer communication interface configured to interact with an external computer, receive a test script prepared by the computer and upload test data and logs.

[0016] Preferably, the computer communication interface of the intelligent control unit is a USB.

[0017] Preferably, the switching value generation component outputs a passive switching signal, and the analog value generation component outputs one or more of a variable resistance signal, a DC 0-5V voltage signal, a DC 0-10V voltage signal or a 0-22mA current signal.

[0018] Preferably, the leakage current generation component outputs a resistance value representing the strength of a current leakage channel.

[0019] Preferably, the switching value monitoring component can accept one or more of a passive switching signal, a DC 5-24V voltage signal or an AC 24-220V voltage signal, and the analog value monitoring component can accept one or more of a DC 0-5V voltage signal, a DC 0-10V voltage signal or a 0-22mA current signal.

[0020] Further, the signal generation module, the monitoring module and the communication simulation module all have an electrical isolation function to ensure that the signals are independent of each other and prevent interference.

[0021] Further, the signal generation component is provided with an operation physical button and signal display to support direct manual operation, and the monitoring component is provided with signal display to display monitoring data in real time.

[0022] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0023] This invention simulates the real physical signal input of the control system under test through a signal generation module, avoiding test delays caused by slow changes in physical quantities. It can conveniently simulate signals that will not exceed the limits under normal conditions, enabling rapid testing.

[0024] The testing platform integrates multiple types of signal generation and monitoring components and has communication simulation capabilities, covering the testing needs of control systems for various heat storage electric heating devices.

[0025] The testing platform supports automated testing processes and enables flexible configuration and batch execution of test scripts through computer programming, significantly improving testing efficiency and consistency.

[0026] The testing platform adopts a modular design, features electrical isolation and manual / automatic dual-mode operation, has good scalability and maintainability, and has good versatility and application value. Attached Figure Description

[0027] Fig. 1 A system diagram of a test platform for a thermal storage electric heating device control system provided by the present invention;

[0028] Fig. 2 A circuit diagram illustrating an implementation example of a test platform for a thermal storage electric heating device control system provided by this invention;

[0029] Legend:

[0030] 101. Intelligent Control Unit; 102. Computer Interface; 201. Signal Generation Module; 202. Leakage Current Generation Component; 203. Switch Quantity Generation Component; 204. Variable Resistance Analog Quantity Generation Component; 205. 0-22mA Analog Quantity Generation Component; 301. Monitoring Module; 302. AC220V Switch Quantity Monitoring Component; 303. 0-22mA Analog Quantity Monitoring Component; 401. Communication Simulation Module; 501. Power Supply Module; 502. Power Switch; 503. Power Indicator. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figs. 1-2As shown: The test platform of the thermal storage electric heating device control system described in this embodiment includes an intelligent control unit 101, a signal generation module 201, a monitoring module 301, a communication simulation module 401, a power supply module 501, and a computer communication interface 102. Each module is connected to the system under test through electrical isolation to ensure that the signals are independent of each other and to prevent interference.

[0033] 1. Further, the power module 501 includes:

[0034] The power supply module 501 is preferably an AC220V / DC24V switching power supply, which controls the power supply of the platform through the power switch 502 and displays the working status through the power indicator 503, providing a stable DC power supply for each module of the test platform.

[0035] 2. Furthermore, the intelligent control unit 101 and the computer communication interface 102:

[0036] The intelligent control unit 101 is the core of the test platform, responsible for executing test scripts, controlling the operation of the signal generation module 201, monitoring module 301, and communication simulation module 401 according to a predetermined program, and recording data. The computer communication interface 102 preferably uses a USB interface for connecting to a computer, enabling the uploading of test scripts and the downloading of test data.

[0037] 3. Furthermore, the signal generation module 201 is used to simulate various external input signals of the control system under test, and includes the following components:

[0038] Leakage current generation component 202: preferably a resistor of 7.2kΩ, to simulate phase-to-ground leakage current and to test the leakage protection function of the control system;

[0039] Switch quantity generation component 203: preferably a relay, generates a passive switching signal to simulate the switch quantity input of the control system under test;

[0040] Variable resistance analog signal generation component 204: preferably an electric potentiometer, used to simulate the temperature signal of a resistance temperature sensor such as PT100.

[0041] 0-22mA analog signal generation component 205: preferably a 0-22mA constant current generator with display, which simulates the analog input of the control system under test, and supports manual knob adjustment and programmable adjustment.

[0042] 4. Further, the monitoring module 301 is used to acquire the output signal of the control system under test, including:

[0043] AC220V switch quantity monitoring component 302: Preferably a voltage detection circuit with indicator lights, which displays the switch quantity output status in real time and can send the signal to the intelligent control unit 101 for recording.

[0044] 0-22mA analog quantity monitoring component 303: preferably a current acquisition unit with display and communication interface, which displays the current value in real time and supports the intelligent control unit 101 to read and store data.

[0045] 5. Furthermore, the communication simulation module 401 supports RS-485 communication and can simulate external devices sending data to the system under test using a specified communication protocol to test the communication processing capability of the control system. Its communication protocol is set by the intelligent control unit 101.

[0046] 6. Testing process and operation methods:

[0047] During the testing process, the user uses a computer to create a test script, which is then downloaded to the intelligent control unit 101 via the computer interface 102. After the test is started, the intelligent control unit 101 automatically controls the signal generation module 201 to generate various switching, analog, and leakage current signals according to a preset program. These signals are then sequentially transmitted to the control system under test. Some analog signals are transmitted sequentially to the control system under test via the communication simulation module 401. The monitoring module 301 listens to and collects the output response of the control system under test. The intelligent control unit 101 determines whether the information collected by the monitoring module meets the requirements specified in the test script, thereby determining whether the function of the system under test is normal. Simultaneously, it records a log for the user to download for further analysis. The user can also manually operate the signal generation component via physical buttons and displays, and observe the real-time response data of the control system under test through the display of the monitoring component, enabling rapid debugging and verification of each function.

[0048] Through the collaborative work of the above modules, this test platform can quickly and comprehensively test the control logic, signal response, and protection functions of the control system of the thermal storage electric heating device. It avoids the test delay caused by the slow change of physical quantities in traditional tests, can easily simulate signals that will not exceed the standard under normal conditions, realize rapid testing, significantly improve test efficiency, reduce test costs, and ensure the accuracy and reliability of test results.

[0049] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A test platform for a control system of a regenerative electric heating device, characterized in that, It comprises: a signal generation module for generating various types of simulation signals to simulate the external input signals collected by the control system under test; a monitoring module for monitoring and collecting the output response of the control system under test; a communication simulation module for simulating the external signals received by the control system under test through the communication interface; an intelligent control unit for controlling the signal generation module, the monitoring module and the communication simulation module, and automatically executing the test process.

2. The test platform of a control system of a regenerative electric heating device according to claim 1, characterized in that: The signal generation module comprises one or more switching value generation components, one or more analog value generation components and a leakage current generation component, which are respectively used to provide switching value signals, analog value signals and leakage current signals to the control system under test.

3. The test platform of a regenerative thermal device according to claim 1, wherein: The monitoring module comprises one or more switching value monitoring components and one or more analog value monitoring components.

4. The test platform for the control system of the heat storage type electric heating device according to claim 1, characterized in that: the interface of the communication simulation module is one or more of serial interface (RS-485, RS-232) or standard Ethernet (TCP / IP); and the test platform further comprises a power module to complete the AC / DC function and supply power to each module of the test platform.

5. The test platform of a control system of a regenerative electric heating device according to claim 1, characterized in that: The intelligent control unit is provided with a computer communication interface for data interaction with an external computer, receiving the test script prepared by the computer and uploading the test data and log.

6. The test platform for a regenerative electric heating device of claim 2, wherein: The switching value generation component outputs passive switching signals, and the analog value generation component outputs one or more of variable resistance signals, DC 0-5V voltage signals, DC 0-10V voltage signals or 0-22mA current signals.

7. The test platform for a regenerative electric heating device of claim 2, wherein: The leakage current generation component outputs a resistance value representing the strength of the current leakage channel.

8. The test platform for a regenerative electric heating device of claim 3, wherein: The switching value monitoring component can accept one or more of passive switching signals, DC 5-24V voltage signals or AC 24-220V voltage signals, and the analog value monitoring component can accept one or more of DC 0-5V voltage signals, DC 0-10V voltage signals or 0-22mA current signals.

9. The test platform of a control system of a regenerative electric heating device according to claim 1, characterized in that: The signal generation module, the monitoring module and the communication simulation module all have electrical isolation function to ensure that the signals are independent of each other and prevent interference.

10. The test platform of a control system of a regenerative electric heating device according to claim 1, characterized in that: The signal generation component is provided with operation physical buttons and signal display to support manual direct operation, and the monitoring component is provided with signal display for real-time display of monitoring data.

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