CN112666930A - Comprehensive test bed for train air-conditioning control system - Google Patents
Comprehensive test bed for train air-conditioning control system Download PDFInfo
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- CN112666930A CN112666930A CN202011620909.9A CN202011620909A CN112666930A CN 112666930 A CN112666930 A CN 112666930A CN 202011620909 A CN202011620909 A CN 202011620909A CN 112666930 A CN112666930 A CN 112666930A
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Abstract
本发明涉及空调测试设备领域，公开了一种用于列车空调控制***的综合试验台，以便于对空调控制器进行准确检测。本发明包括PLC、人机交互模块、空调控制器、电流模拟调节器以及温度模拟调节器；PLC的通信接口和人机交互模块相连，PLC的输出接口和空调控制器的输入接口相连，PLC的输入接口和空调控制器的输出接口相连，空调控制器的电流接口和电流模拟调节器相连，空调控制器的温度接口和温度模拟调节器相连。本发明适用于列车空调控制***检修测试。
The invention relates to the field of air-conditioning testing equipment, and discloses a comprehensive test bench for a train air-conditioning control system, so as to facilitate accurate detection of an air-conditioning controller. The invention includes a PLC, a human-computer interaction module, an air-conditioning controller, a current simulation regulator and a temperature simulation regulator; the communication interface of the PLC is connected with the human-computer interaction module, the output interface of the PLC is connected with the input interface of the air-conditioning controller, and the PLC's communication interface is connected with the input interface of the air-conditioning controller. The input interface is connected with the output interface of the air conditioner controller, the current interface of the air conditioner controller is connected with the current analog regulator, and the temperature interface of the air conditioner controller is connected with the temperature analog regulator. The invention is suitable for the maintenance test of the air-conditioning control system of the train.
Description
Technical Field
The invention relates to the field of air conditioner test equipment, in particular to a comprehensive test bed for a train air conditioner control system.
Background
The working condition of the train air conditioner directly influences the riding experience of passengers, the air conditioning system breaks down on the positive line, but the faults can not reappear after the air conditioning system returns to the warehouse, the maintainers are difficult to analyze and process the faults, the fault cause is difficult to find out abnormally, the problem that the fault rate and the complaints of the passengers are high can not be solved effectively in time, and the vehicle maintenance work faces great pressure.
In addition, train use units such as subway operating companies typically do not have the capability of detecting, analyzing, and maintaining core components and vital parts. If the air conditioner control system is in failure, the mode that all relevant parts are replaced by new parts is mainly adopted, and the maintenance cost is increased while the problem is not thoroughly solved.
At present, a product similar to a comprehensive test bed of a train air-conditioning control system is not found. The main defects of the existing air conditioner detection mode are as follows:
1. the existing air conditioner detection equipment cannot simulate the faults of the train air conditioner. After the train returns to the warehouse, the fault usually disappears, and the fault can not be reproduced in a fault simulation mode, so that the vehicle maintainer can not accurately analyze and judge the fault. Generally, the method of increasing the equipment inspection frequency is adopted, the goal of reducing the failure rate is expected to be achieved, but the practical effect is very little, and the failure of the air conditioner control system cannot be effectively solved for a long time.
2. The existing air conditioner detection equipment cannot carry out autonomous maintenance on the core elements of the train air conditioner. The air conditioner controller is a core component in a train air conditioning system, and generally has a market price of about 4 ten thousand yuan/set. If the air conditioner control system fails, the air conditioner control system can only be replaced with a new one, so that the maintenance cost of the air conditioner control system is high.
3. The existing air conditioner detection equipment has single function and poor practicability. Air conditioner check out test set on the market generally can only detect the operating mode of parts such as ventilation blower, condensation fan, compressor, and also only test its operating voltage, current isoparametric usually, can not test air conditioner controller or partial air conditioner control system component, more can not simulate various faults, verify trouble or technical improvement scheme, and the limitation is big, and the practicality is not high.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the comprehensive test bed for the train air-conditioning control system is provided, so that the air-conditioning controller can be accurately detected.
In order to solve the problems, the invention adopts the technical scheme that: the comprehensive test bed for the train air-conditioning control system comprises a human-computer interaction module, an air-conditioning controller, a current simulation regulator, a temperature simulation regulator and a PLC (programmable logic controller) for simulating interface state signals of controlled elements; the communication interface of PLC links to each other with man-machine interaction module, and PLC's output interface and air conditioner controller's input interface link to each other, and PLC's input interface and air conditioner controller's output interface link to each other, and air conditioner controller's current interface and current simulation regulator link to each other, and air conditioner controller's temperature interface and temperature simulation regulator link to each other.
Further, the current simulation regulator is used for providing virtual compressor currents under different working conditions for the air conditioner controller; the temperature simulation regulator is used for providing virtual fresh air and return air temperature data of the air conditioner for the air conditioner controller; the human-computer interaction module is used for realizing the human-computer interaction function between the user and the comprehensive test bed, and comprises user instruction issuing and test result displaying;
when the air conditioner controller is used as the detected equipment, the PLC is used for simulating an interface state signal of the controlled element, providing the simulated signal to the air conditioner controller, detecting whether an output signal of the air conditioner controller is normal or not and outputting a detection result to the man-machine interaction module; wherein the controlled element refers to an element controlled by an air conditioner controller in an air conditioning system;
when the air conditioner controller participates in the test of the controlled element in the air conditioning system in the non-tested equipment identity, the PLC is used for simulating interface state signals of other elements except the element to be tested in the air conditioning system, detecting whether the interface state signals of the element to be tested are normal or not, and outputting the detection result to the man-machine interaction module.
Specifically, the current analog regulator provides a virtual compressor current for the compressor during open circuit, light load, medium load, and overload conditions.
Specifically, the PLC can be in a model number of S7-1200.
Specifically, the current analog regulator switches 4 germanium diodes connected in series through a multi-gear master switch to form 5 gears of 0V, 0.2V, 0.4V, 0.8V and 1.2V, and the 5 gears respectively correspond to working currents of the compressors 0A, 4A, 8A, 12A and 16A.
The invention has the beneficial effects that: on one hand, various running states of an air conditioner control system interface can be comprehensively simulated through the PLC, so that a fault point can be conveniently and quickly confirmed, and the problem of difficult faults of the air conditioner is solved. On the other hand, the system can also carry out physical test and functional verification, provides convenience for the maintenance of core components, and effectively solves the problems existing at present.
Drawings
FIG. 1 is a block diagram of the present invention.
Fig. 2 is a block diagram of the embodiment.
Fig. 3 is a block diagram of a current analog regulator according to an embodiment.
Detailed Description
In order to accurately detect the air conditioner controller, the invention discloses a comprehensive test bed which can be used for a train air conditioner control system. As shown in fig. 1, the device comprises a PLC, a man-machine interaction module, an air conditioner controller, a current analog regulator and a temperature analog regulator; the PLC is a digital operation Controller with a microprocessor for automatic control, and can load control instructions into a memory at any time for storage and execution, and the Programmable Controller is composed of a CPU, an instruction and data memory, an input/output interface, a power supply, and a digital-to-analog conversion functional unit. According to the invention, a communication interface of the PLC is connected with a human-computer interaction module, an output interface of the PLC is connected with an input interface of an air conditioner controller, the input interface of the PLC is connected with an output interface of the air conditioner controller, a current interface of the air conditioner controller is connected with a current simulation regulator, and a temperature interface of the air conditioner controller is connected with the temperature simulation regulator.
The current simulation regulator is used for providing virtual compressor current under different working conditions for the air conditioner controller, such as the virtual compressor current of the compressor under the states of open circuit, light load, medium load and overload heavy load;
the temperature simulation regulator is used for providing virtual fresh air and return air temperature data of the air conditioner for the air conditioner controller;
the human-computer interaction module is used for realizing the human-computer interaction function between the user and the comprehensive test bed, and comprises user instruction issuing and test result displaying;
when the air conditioner controller is used as the detected equipment, the PLC is used for simulating an interface state signal of the controlled element, providing the simulated signal to the air conditioner controller, detecting whether an output signal of the air conditioner controller is normal or not and outputting a detection result to the man-machine interaction module; wherein the controlled element refers to an element controlled by an air conditioner controller in an air conditioning system;
when the air conditioner controller participates in the test of the controlled element in the air conditioning system in the non-tested equipment identity, the PLC is used for simulating interface state signals of other elements except the element to be tested in the air conditioning system, detecting whether the interface state signals of the element to be tested are normal or not, and outputting the detection result to the man-machine interaction module.
The invention is further illustrated by the following examples and figures.
Examples
The embodiment provides a comprehensive test bed for a train air-conditioning control system, as shown in fig. 2, the comprehensive test bed mainly comprises a PLC, a human-computer interaction module HMI, an air-conditioning controller, a current simulation regulator, a temperature simulation regulator and a computer, wherein a communication interface of the PLC is connected with the human-computer interaction module, an output interface of the PLC is connected with an input interface of the air-conditioning controller, the input interface of the PLC is connected with an output interface of the air-conditioning controller, the current interface of the air-conditioning controller is connected with the current simulation regulator, the temperature interface of the air-conditioning controller is connected with the temperature simulation regulator, and the computer is connected with the communication interface of the air-conditioning controller. The functions of each part are as follows:
1. human-machine interaction module HMI
The human-computer interaction module HMI is used as a human-computer interaction interface and used for realizing the human-computer interaction function between the user and the comprehensive test bed, and comprises the steps of receiving the test instruction of the user, displaying the test result, displaying the working state of an air conditioner control system interface and the like. In the embodiment, the man-machine interaction module can display the working states of elements such as a compressor, a ventilator, a condensing fan and the like in the air conditioning system on a home page of the man-machine interaction module, and displays the faults of main interface elements in a rolling mode in real time; the working state of the main interface element can be displayed on the second page and the third page, and the input signal can be manually controlled; the third page is an alarm information page, which can automatically generate specific information and time when alarming, and is convenient for maintenance personnel to analyze and process faults.
2、PLC
And the PLC is used for simulating and generating the running state of the train air-conditioning control system interface to the air-conditioning controller according to the test instruction and detecting an instruction signal output to the controlled element by the air-conditioning controller. In an embodiment, the PLC is a SIEMENS S7-1200 component.
3. Current analog regulator
The current simulation regulator is used for simulating and generating virtual compressor currents under different working conditions to the air conditioner controller. As shown in fig. 3, the current simulation regulator in the embodiment may utilize the characteristic that the germanium diode voltage D1-D4 is reduced to 0.2V, and switch the 4 diodes connected in series through the multi-step master switch to form 5 steps of 0V, 0.2V, 0.4V, 0.8V, and 1.2V, where the 5 steps correspond to the operating currents of the compressors 0A, 4A, 8A, 12A, and 16A, so as to meet the requirement of the experiment table on the operating current of the compressors.
4. Temperature simulation regulator
The temperature simulation regulator is used for providing virtual fresh air and return air temperature data of the air conditioner for the air conditioner controller. The range of the air conditioner working temperature of the subway train is-35-45 ℃, the recognizable limit temperature of an air conditioner control system is-50-100 ℃, and the temperature simulation regulator can realize continuous regulation in the limit temperature range and meet the requirements of a test bed on normal temperature environment and limit temperature environment tests. When the air temperature is high, the temperature simulation regulator is used for reducing the recognition temperature of the air conditioner controller, so that the heating of the air conditioner is realized; when the air temperature is low, the temperature simulation regulator is used for increasing the recognition temperature of the air conditioner controller, so that the refrigeration of the air conditioner is realized, and the requirements of fault simulation, test and maintenance are met.
5. Air conditioner controller
The air conditioner controller is used for generating a corresponding control instruction signal to a controlled element in the air conditioner according to the test instruction signal output by the PLC. The air conditioner controller can be used as detected equipment, and the equipment state of the air conditioner controller is detected by a comprehensive test bed of the train air conditioner control system; the device can also be used as a part of a comprehensive test bed of the train air-conditioning control system to simulate the operation state of the interface element of the train air-conditioning control system. Meanwhile, other physical elements of the train air-conditioning control system can be conveniently connected into the test bed to participate in fault simulation or performance test. Specifically, when the air conditioner controller is used as a detected device, the PLC is configured to simulate an interface state signal of a controlled element, provide the simulated signal to the air conditioner controller, detect whether an output signal of the air conditioner controller is normal, and output a detection result to the human-computer interaction module; wherein the controlled element refers to an element controlled by an air conditioner controller in an air conditioning system; when the air conditioner controller participates in the test of the controlled element in the air conditioning system in the non-tested equipment identity, the PLC is used for simulating interface state signals of other elements except the element to be tested in the air conditioning system, detecting whether the interface state signals of the element to be tested are normal or not, and outputting the detection result to the man-machine interaction module.
6. Computer with a display
The computer is used as a participating experimental device and can collect data in the air conditioner controller so as to be called when a test result is analyzed subsequently.
The embodiment can realize the independent test or the comprehensive test of a real object and a virtual object through the comprehensive test bed formed by the modules, and can directly observe the response condition of the air conditioning system; all input signals and output load faults can be simulated, and the air conditioner controller can be tested and maintained; the software simulation test can be carried out, and the physical test can be accessed to carry out mutual verification, so that the detection accuracy is improved; the working process is dynamically displayed, and the states and working conditions of switches, sensors, motors, valves and the like can be directly observed.
Claims (5)
1. The comprehensive test bed for the train air-conditioning control system is characterized by comprising a human-computer interaction module, an air-conditioning controller, a current simulation regulator, a temperature simulation regulator and a PLC (programmable logic controller) for simulating interface state signals of controlled elements; the communication interface of PLC links to each other with man-machine interaction module, and PLC's output interface and air conditioner controller's input interface link to each other, and PLC's input interface and air conditioner controller's output interface link to each other, and air conditioner controller's current interface and current simulation regulator link to each other, and air conditioner controller's temperature interface and temperature simulation regulator link to each other.
2. The integrated test bed for train air-conditioning control system according to claim 1, wherein the current simulation regulator is used for providing virtual compressor current under different working conditions to the air-conditioning controller;
the temperature simulation regulator is used for providing virtual fresh air and return air temperature data of the air conditioner for the air conditioner controller;
the human-computer interaction module is used for realizing the human-computer interaction function between the user and the comprehensive test bed, and comprises user instruction issuing and test result displaying;
when the air conditioner controller is used as the detected equipment, the PLC is used for simulating an interface state signal of the controlled element, providing the simulated signal to the air conditioner controller, detecting whether an output signal of the air conditioner controller is normal or not and outputting a detection result to the man-machine interaction module; wherein the controlled element refers to an element controlled by an air conditioner controller in an air conditioning system;
when the air conditioner controller participates in the test of the controlled element in the air conditioning system in the non-tested equipment identity, the PLC is used for simulating interface state signals of other elements except the element to be tested in the air conditioning system, detecting whether the interface state signals of the element to be tested are normal or not, and outputting the detection result to the man-machine interaction module.
3. The integrated test stand for a train air conditioning control system according to claim 1 or 2, wherein the PLC has a model number of S7-1200.
4. The integrated test bed for train air conditioning control system of claim 2, wherein the current analog regulator provides virtual compressor currents for the compressor during open circuit, light load, medium load and overload conditions.
5. The integrated test bed for the train air-conditioning control system according to claim 2, wherein the current simulation regulator switches the 4 germanium diodes connected in series through a multi-gear master switch to form 5 gears of 0V, 0.2V, 0.4V, 0.8V and 1.2V, and the 5 gears respectively correspond to the working currents of the compressors 0A, 4A, 8A, 12A and 16A.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004905A (en) * | 2016-07-28 | 2016-10-12 | 中车建设工程有限公司 | Train air conditioner control method achieving quick response |
| WO2019127201A1 (en) * | 2017-12-27 | 2019-07-04 | 中车长春轨道客车股份有限公司 | Rail train and air conditioning control system thereof |
| CN110673585A (en) * | 2019-10-15 | 2020-01-10 | 新誉轨道交通科技有限公司 | Test method, test device and test system for train air conditioning system |
| CN111223349A (en) * | 2019-11-08 | 2020-06-02 | 中车长春轨道客车股份有限公司 | Intelligent debugging and training system and method for heating and ventilation control of urban railway passenger car |
| CN213876428U (en) * | 2020-12-31 | 2021-08-03 | 成都地铁运营有限公司 | Comprehensive test bed for train air-conditioning control system |
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- 2020-12-31 CN CN202011620909.9A patent/CN112666930B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004905A (en) * | 2016-07-28 | 2016-10-12 | 中车建设工程有限公司 | Train air conditioner control method achieving quick response |
| WO2019127201A1 (en) * | 2017-12-27 | 2019-07-04 | 中车长春轨道客车股份有限公司 | Rail train and air conditioning control system thereof |
| CN110673585A (en) * | 2019-10-15 | 2020-01-10 | 新誉轨道交通科技有限公司 | Test method, test device and test system for train air conditioning system |
| CN111223349A (en) * | 2019-11-08 | 2020-06-02 | 中车长春轨道客车股份有限公司 | Intelligent debugging and training system and method for heating and ventilation control of urban railway passenger car |
| CN213876428U (en) * | 2020-12-31 | 2021-08-03 | 成都地铁运营有限公司 | Comprehensive test bed for train air-conditioning control system |
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