Air conditioner air valve detection device

Abstract

The utility model discloses a kind of air-conditioning air valve detection devices, comprising: control module, touch screen, drive module and power module;Control module is connected with touch screen, drive module, power module, to-be-measured air valve, drive module is connected with power module, to-be-measured air valve, power module is connected with touch screen;Touch screen receives detection signal, and sends to control module, control module generates drive signal sent to drive module according to detection signal, and drive module drives to-be-measured air valve work according to drive signal;To-be-measured air valve feedback operating state to control module, and control module generates detection result sent to touch screen according to operating state.The utility model does not need to disassemble air conditioner cover plate and does not need to use subway vehicle storage battery, also can realize the rapid detection to air valve fault, effectively improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air valve detection technology, and in particular to an air conditioning air valve detection device. Background Technology

[0002] The air conditioning valves in subway trains are an important component of the air conditioning system. They are mainly used to regulate the airflow distribution and temperature control in the carriage. The air conditioning controller controls the opening of the fresh air valve and the return air valve to regulate the air volume and temperature. They are key components to ensure a comfortable environment in the carriage.

[0003] However, in the routine maintenance of the air conditioning system of subway cars, it is necessary to disassemble the air conditioning main control box to measure whether the air valve feedback signal is normal, and the battery self-test needs to be switched on and off frequently to detect the fault. The fault finding is cumbersome, time-consuming and inefficient. At the same time, there are safety risks that may be caused by disassembling and assembling the cover.

[0004] Therefore, there is an urgent need for a detection device that can quickly detect air valve malfunctions without removing the air conditioner cover or using subway car batteries, in order to improve detection efficiency. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an air conditioning valve detection device that can quickly detect valve failures without disassembling the air conditioning cover or using the subway car battery, thus effectively improving detection efficiency.

[0006] To solve the above problems, this utility model is implemented according to the following solution:

[0007] An air conditioning valve detection device is provided, comprising: a control module, a touch screen, a drive module, and a power module; the control module is connected to the touch screen, the drive module, the power module, and the valve under test; the drive module is connected to the power module and the valve under test; and the power module is connected to the touch screen.

[0008] The touch screen receives the detection signal and sends it to the control module. The control module generates a drive signal based on the detection signal and sends it to the drive module. The drive module drives the air valve under test to work based on the drive signal.

[0009] The working status of the valve under test is fed back to the control module, and the control module generates a detection result based on the working status and sends it to the touch screen.

[0010] Compared with the prior art, the beneficial effects of the air conditioning valve detection device of this utility model are as follows: by receiving the detection signal sent by the staff through the touch screen, the control module generates the corresponding drive signal according to the detection signal to drive the corresponding valve under test to work, and determines the detection result according to its working status. It can realize the rapid detection of valve failure without disassembling the air conditioning cover or using the subway car battery, and effectively improves the detection efficiency.

[0011] Optionally, the drive module includes a relay drive unit, a main relay circuit, and a slave relay circuit;

[0012] The relay drive unit is connected to the control module, the main relay circuit, the slave relay circuit, and the power supply module. The slave relay circuit is connected to the main relay circuit, the power supply module, and the air valve under test. The main relay circuit is connected to the power supply module.

[0013] Optionally, the main relay circuit includes a main relay;

[0014] One end of the coil of the main relay is connected to the relay drive circuit, and the other end is connected to the power supply module; one end of the normally open contact of the main relay is connected to the power supply module, and the other end is connected to the slave relay circuit.

[0015] Optionally, the relay circuit includes a slave relay;

[0016] One end of the coil of the slave relay is connected to the relay drive circuit, and the other end is connected to the power module; the common terminal of the slave relay is connected to the main relay circuit; the air valve under test is connected to the normally open contact and the normally closed contact of the slave relay.

[0017] Optionally, the power module includes two power conversion circuits with identical structures and which are redundant with each other.

[0018] The power conversion circuit is connected to the control module, the drive module, and the touch screen.

[0019] Optionally, the control module includes a main control unit; the main control unit is connected to the touch screen, the drive module, and the air valve under test.

[0020] Optionally, the main control unit is an STM32F103C8T6 microcontroller. Attached Figure Description

[0021] Figure 1 This is a structural block diagram of the detection device of this utility model;

[0022] Figure 2This is a circuit diagram of the control module of this utility model;

[0023] Figure 3 This is a circuit diagram of the touch screen of this utility model;

[0024] Figure 4 This is a circuit diagram of the relay drive unit of this utility model;

[0025] Figure 5 This is a schematic diagram of the main relay circuit of this utility model;

[0026] Figure 6 This is a schematic diagram of the relay circuit of this utility model;

[0027] Figure 7 This is a circuit diagram of the power module of this utility model;

[0028] The attached diagram shows the following labels: 1. Control module; 2. Touch screen; 3. Drive module; 301. Relay drive unit; 302. Main relay circuit; 303. Slave relay circuit; 4. Power supply module; 5. Air valve under test. Detailed Implementation

[0029] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0030] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] See Figure 1-3 As shown, an air conditioning valve detection device includes: a control module 1, a touch screen 2, a drive module 3, and a power module 4; the control module 1 is connected to the touch screen 2, the drive module 3, the power module 4, and the valve under test 5; the drive module 3 is connected to the power module 4 and the valve under test 5; and the power module 4 is connected to the touch screen 2.

[0032] In one embodiment of this utility model, the control module 1 includes a main control unit; the main control unit is connected to the touch screen 2, the drive module 3, and the air valve under test 5; the main control unit is a single-chip microcomputer of STM32F103C8T6.

[0033] Touch screen 2 receives the detection signal and sends it to control module 1. Control module 1 generates a drive signal based on the detection signal and sends it to drive module 3. Drive module 3 drives the air valve under test 5 to work based on the drive signal. The air valve under test 5 feeds back its working status to control module 1. Control module 1 generates a detection result based on the working status and sends it to touch screen 2.

[0034] In one embodiment of this utility model, see Figure 4-6 As shown, the drive module 3 includes a relay drive unit 301, a main relay circuit 302, and a slave relay circuit 303. The relay drive unit 301 is connected to the control module 1, the main relay circuit 302, the slave relay circuit 303, and the power supply module 4. The slave relay circuit 303 is connected to the main relay circuit 302, the power supply module 4, and the air valve under test 5. The main relay circuit 302 is connected to the power supply module 4.

[0035] The main relay circuit 302 includes a main relay; one end of the coil of the main relay is connected to the relay drive circuit, and the other end is connected to the power supply module 4; one end of the normally open contact of the main relay is connected to the power supply module 4, and the other end is connected to the slave relay circuit 303.

[0036] The relay circuit 303 includes a slave relay; one end of the coil of the slave relay is connected to the relay drive circuit, and the other end is connected to the power supply module 4; the common terminal of the slave relay is connected to the main relay circuit 302; the air valve under test 5 is connected to the normally open contact and the normally closed contact of the slave relay.

[0037] exist Figure 5 The main relay circuit 302 is shown. Figure 5 The signal FF7+ is used to control the opening and closing of the slave relay circuit 303. When the drive signal GPIO_FF7 generated by the control module 1 controls the connection of the common terminal of the main relay to the normally open contact via the signal FF7 generated by the relay drive unit 301, the normally open contact of the main relay outputs the 24V voltage provided by the power supply module 4 as the overall control for the opening and closing of the slave relay circuit 303. When the common terminal of the main relay is connected to the normally closed contact, its normally open contact has no output. At this time, even if the drive signal generated by the control module 1 includes the signal to open the slave relay circuit 303, it is impossible to drive the tested air valve 5 to work.

[0038] exist Figure 6 Only one path from relay circuit 303 is shown. Figure 6The signals FFi / FFi- / FFi+ and the value of i in the relay RLYi are all 1, 2, 3, 4, 5, and 6, respectively, corresponding to 6 identical relay circuits 303. Each relay circuit 303 is used to control one air valve 5 under test, that is, the number of relay circuits 303 is the same as the number of air valves 5 under test. The signal FFi- is used to control the air valve 5 under test to close, and the signal FFi+ is used to control the air valve 5 under test to open. That is, when the common terminal of the relay is connected to the normally closed contact, and the normally closed contact outputs the signal FFi- to the air valve 5 under test, the air valve 5 under test stops working. When the common terminal of the relay is connected to the normally open contact, and the normally open contact outputs the signal FFi+ to the air valve 5 under test, the air valve 5 under test starts working.

[0039] In one embodiment of this utility model, see Figure 7 As shown, the power module 4 includes two power conversion circuits with identical structures and redundancy; the power conversion circuits are connected to the control module 1, the drive module 3, and the touch screen 2.

[0040] The working process of the detection device of this utility model will be described in detail below:

[0041] Take, for example, a slave relay circuit 303 that includes a slave relay RLY1 and is connected to the air valve A1.

[0042] The operator selects air valve A1 as the detection object on touch screen 2. Touch screen 2 receives the detection signal for air valve A1. Control module 1 generates drive signals for the main relay circuit 302 and the slave relay circuit 303, including slave relay RLY1, based on the detection signal. Specifically:

[0043] Control module 1 generates drive signals GPIO_FF1 to GPIO_FF7 to relay drive unit 301. Relay drive unit 301 generates signals FF1 to FF7 based on the drive signals. Signal FF1 energizes the coil of slave relay RLY1, and signal FF7 energizes the coil of master relay RLY7, causing the normally open contact of master relay RLY7 to output a 24V voltage to the common terminal of slave relay RLY1. This ensures that the normally open contact output signal FF1+ of slave relay RLY1 can be used to drive the normal operation of air valve A1. FF2 to FF6 de-energize the coils of slave relays RLYi (i = 2, 3, 4, 5, 6), causing the normally closed contact of slave relays RLYi (i = 2, 3, 4, 5, 6) to output signal FFi- (i = 2, 3, 4, 5, 6) to control the other air valves to stop working. This ensures that the drive unit only drives air valve A1, avoiding the simultaneous operation of multiple air valves and affecting the detection results.

[0044] When the air valve A1 reaches the preset opening degree, it sends a signal including the working state to the control module 1. The control module 1 pauses the output of the drive signal and sends the detection result that the air valve A1 is in a normal state to the touch screen 2. After the preset time (e.g., 10s) is reached, the control module 1 continues to open the air valve A1 to the maximum opening degree. At this time, the control module 1 generates a drive signal to stop the air valve A1 from working.

[0045] When the control module 1 does not receive a signal from the air valve A1 indicating its working status, the control module 1 generates a detection result indicating that the air valve A1 is in a fault state and displays it on the touch screen 2.

[0046] The detection device of this invention can effectively improve the inspection efficiency of air conditioning valves in subway cars and save labor costs. It can also quickly detect whether the air conditioning valves are faulty without disassembling the subway car cover or using the car battery, thus improving the detection efficiency.

[0047] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An air conditioning valve detection device, characterized in that, include: Control module, touch screen, driver module and power supply module; The control module is connected to the touch screen, the drive module, the power module, and the air valve under test; the drive module is connected to the power module and the air valve under test; and the power module is connected to the touch screen. The touch screen receives the detection signal and sends it to the control module. The control module generates a drive signal based on the detection signal and sends it to the drive module. The drive module drives the air valve under test to work based on the drive signal. The working status of the valve under test is fed back to the control module, and the control module generates a detection result based on the working status and sends it to the touch screen.

2. The air conditioning valve detection device according to claim 1, characterized in that, The drive module includes a relay drive unit, a main relay circuit, and a slave relay circuit; The relay drive unit is connected to the control module, the main relay circuit, the slave relay circuit, and the power supply module. The slave relay circuit is connected to the main relay circuit, the power supply module, and the air valve under test. The main relay circuit is connected to the power supply module.

3. The air conditioning valve detection device according to claim 2, characterized in that, The main relay circuit includes a main relay; One end of the coil of the main relay is connected to the relay drive circuit, and the other end is connected to the power supply module; one end of the normally open contact of the main relay is connected to the power supply module, and the other end is connected to the slave relay circuit.

4. The air conditioning valve detection device according to claim 2, characterized in that, The relay circuit includes a slave relay; One end of the coil of the slave relay is connected to the relay drive circuit, and the other end is connected to the power module; the common terminal of the slave relay is connected to the main relay circuit; the air valve under test is connected to the normally open contact and the normally closed contact of the slave relay.

5. The air conditioning valve detection device according to claim 1, characterized in that, The power module includes two power conversion circuits with identical structures and which are redundant with each other. The power conversion circuit is connected to the control module, the drive module, and the touch screen.

6. The air conditioning valve detection device according to claim 1, characterized in that, The control module includes a main control unit; the main control unit is connected to the touch screen, the drive module, and the air valve to be tested.

7. The air conditioning valve detection device according to claim 6, characterized in that, The main control unit is an STM32F103C8T6 microcontroller.

Images