Detection device for closing time of quick closing mechanism

Abstract

The utility model relates to a device for detecting the closing time of a quick closing mechanism, which comprises a closing mechanism module provided with a closing mechanism valve, test point units are arranged at the upper end and the lower end of the closing mechanism valve, and the test point units can be conducted when the closing mechanism valve is closed; the power supply module is connected with the closing mechanism module; and the detection module is used for capturing a level signal generated when the closing mechanism valve is switched from the on state to the off state. The method comprises the following steps: firstly capturing a time point when a CH1 channel changes from a low level to a high level through an oscilloscope when a closing mechanism valve is electrified; then the closing mechanism valve falls down, the closing mechanism is closed, the CH2 channel is conducted and triggered at the moment, and the time point when the CH2 channel changes from the low level to the high level is captured; the time difference between the two time points is the closing time of the closing mechanism module which is accurately detected.

Description

Technical Field

[0001] The utility model relates to the technical field of rapid response detection, in particular to a detection device for the closing time of a rapid closing mechanism. Background Art

[0002] Military special vehicles are often equipped with air inlet shutoff mechanisms to ensure fresh air flow into the cabin. In the event of an emergency, such as one involving toxic agents or radiation, these shutoff mechanisms often need to be able to shut down within 150 milliseconds.

[0003] When testing the closing time of such quick-closing mechanisms, the rapid closing time makes accurate detection difficult. To overcome this problem, a method currently uses a position switch to capture the switch's on signal, then uses software or a host computer to collect the time. While this method can still detect the closing time, it is more complex and requires a combination of software and hardware to collect the relevant signals. For military special vehicles used in field operations, a simpler and faster method is needed to detect the closing time of quick-closing mechanisms. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to accurately detect the closing time of the quick closing mechanism.

[0005] In order to solve the above technical problems, the utility model provides a device for detecting the closing time of a quick closing mechanism, comprising:

[0006] A closing mechanism module, comprising a closing mechanism valve, wherein test point units are provided at the upper and lower ends of the closing mechanism valve, and the test point units can be turned on when the closing mechanism valve is closed;

[0007] a power supply module, the power supply module being connected to the closing mechanism module;

[0008] The detection module is used to capture the level signal when the valve of the closing mechanism changes from being opened to being closed.

[0009] Furthermore, the closing mechanism valve is connected to an aviation plug.

[0010] Furthermore, the detection module includes an oscilloscope having a CH1 probe and a CH2 probe.

[0011] Furthermore, the closing mechanism module also includes a control circuit breaker, the lower end of which is connected to the two pins of the aviation plug and the CH1 probe respectively; the upper end of which is connected to the positive pole of the power module.

[0012] Furthermore, the negative pole of the power module is connected to pin 3 of the aviation plug, the CH1 probe, and the CH2 probe respectively.

[0013] Furthermore, the test point unit includes an upper test point and a lower test point, and the upper test point and the lower test point are respectively located at the upper end of the closing mechanism valve and the lower end of the closing mechanism valve.

[0014] Furthermore, the upper test point is connected to the CH2 probe via a cable; and the lower test point is connected to the positive electrode of the power module via a cable.

[0015] Furthermore, the power supply module is a 24V DC power supply.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The utility model first captures the time point when the CH1 channel changes from a low level to a high level when the closing mechanism valve is energized through an oscilloscope; then the closing mechanism valve falls, the closing mechanism is closed, and the CH2 channel is triggered to be turned on, capturing the time point when the CH2 channel changes from a low level to a high level; the time difference between the two time points is the closing time of the closing mechanism module for accurate detection. This solution is simple, does not require software, and has fast detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a circuit disclosed in an embodiment of the present utility model;

[0019] Figure 2 This is a diagram of the oscilloscope interface disclosed in an embodiment of the present utility model.

[0020] In the figure: 10, power module; 20, closing mechanism module; 21, closing mechanism valve; 22, control circuit breaker; 23, aviation plug; 30, detection module. DETAILED DESCRIPTION

[0021] In order to make the technical solution and technical effect of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments.

[0022] The utility model aims to provide a detection device for the closing time of a quick closing mechanism, which is used for accurately detecting the closing time of the quick closing mechanism.

[0023] refer to Figure 1The detection device mainly includes a power module 10, a closing mechanism module 20, and a detection module 30. The power module 10 is connected to the closing mechanism module 20. Preferably, the power module 10 is a 24V DC power supply. The closing mechanism module 20 has a closing mechanism valve 21 and a control circuit breaker 22. Test point units are provided at the upper and lower ends of the closing mechanism valve 21, and the test point units can be turned on when the closing mechanism valve 21 is closed. The closing mechanism valve 21 is also connected to an aviation plug 23. The detection module 30 includes an oscilloscope connected to a CH1 probe and a CH2 probe. The detection module 30 is used to capture the level signal when the closing mechanism valve 21 changes from being turned on to being turned off.

[0024] The test point unit includes an upper test point and a lower test point, located at the upper and lower ends of the closing mechanism valve 21, respectively. When the closing mechanism valve 21 is closed, the upper and lower test points are electrically connected. Two cables are then connected to the upper and lower test points, respectively, and extend outward. Furthermore, the upper test point is connected to the CH2 probe via the cable, while the lower test point is also connected to the positive terminal of the power module 10 via the cable.

[0025] The lower end of the control circuit breaker 22 is connected to pin 2 of the aviation plug 23 and the CH1 probe respectively; the upper end of the control circuit breaker 22 is connected to the positive terminal of the power module 10. The negative terminal of the power module 10 is connected to pin 3 of the aviation plug 23, the CH1 probe, and the CH2 probe respectively.

[0026] The technical principle of this embodiment is: using an oscilloscope to capture the level signals of two state points: the moment when the closing mechanism valve 21 starts to close and the moment when the closing mechanism valve 21 closes, and accurately detecting the closing time of the closing mechanism module 20 through the time difference between the two state points.

[0027] The parameters of the oscilloscope in this embodiment are set as follows:

[0028] 1. Trigger settings: Trigger type is edge; signal source is selected as CH2 channel; slope is rising; trigger mode is normal; coupling is DC.

[0029] 2. The vertical resolution is 5V / grid; the horizontal resolution is set to 10ms; the trigger voltage of CH1 is set to 10V.

[0030] The operating steps of the utility model include:

[0031] Step 1: Check whether the closing mechanism module 20 is in an open state. If the closing mechanism module 20 is in a closed state, manually open the closing mechanism module 20;

[0032] Step 2: Turn on the power module 10 and close the control circuit breaker 22. At this time, CH1 is triggered and the CH1 channel changes from low level to high level.

[0033] Step 3: When the closing mechanism valve 21 falls and the closing mechanism module 20 is closed, the upper test point and the lower test point are connected, and CH2 is triggered, and the CH2 channel changes from low level to high level;

[0034] Step 4: Observe the oscilloscope window. The interval from the rising edge of CH1 to the rising edge of CH2 is the closing time of the closing mechanism valve 21. Figure 2 In the figure, there are 3 grid distances between CH1 and CH2. According to the setting of each grid time to 25ms, it can be calculated that the interval between CH1 and CH2 is 3×25ms=75ms, and the closing time of the closing mechanism is 75ms.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the closing time of a quick closing mechanism, characterized in that: include: A closing mechanism module (20) has a closing mechanism valve (21), and test point units are provided at the upper and lower ends of the closing mechanism valve (21), and the test point units can be turned on when the closing mechanism valve (21) is closed; a power supply module (10), the power supply module (10) being connected to the closing mechanism module (20); The detection module (30) is used to capture the level signal when the closing mechanism valve (21) changes from being on to being closed.

2. The device for detecting the closing time of a quick closing mechanism according to claim 1, characterized in that: The closing mechanism valve (21) is connected to an aviation plug (23).

3. The device for detecting the closing time of a quick closing mechanism according to claim 2, characterized in that: The detection module (30) comprises an oscilloscope, and the oscilloscope is connected to a CH1 probe and a CH2 probe.

4. The device for detecting the closing time of a quick closing mechanism according to claim 3, characterized in that: The closing mechanism module (20) further includes a control circuit breaker (22), the lower end of which is respectively connected to the two pins of the aviation plug (23) and the CH1 probe; and the upper end of which is connected to the positive electrode of the power module (10).

5. The device for detecting the closing time of a quick closing mechanism according to claim 3, characterized in that: The negative pole of the power module (10) is respectively connected to the three pins of the aviation plug (23), the CH1 probe, and the CH2 probe.

6. The device for detecting the closing time of a quick closing mechanism according to claim 3, characterized in that: The test point unit comprises an upper test point and a lower test point, and the upper test point and the lower test point are respectively located at the upper end of the closing mechanism valve (21) and the lower end of the closing mechanism valve (21).

7. The device for detecting the closing time of a quick closing mechanism according to claim 6, characterized in that: The upper test point is connected to the CH2 probe via a cable; and the lower test point is connected to the positive electrode of the power module (10) via a cable.

8. The device for detecting the closing time of a quick closing mechanism according to claim 1, characterized in that: The power supply module (10) is a 24V DC power supply.

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