CN115031771A - Life testing device and system - Google Patents
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- CN115031771A CN115031771A CN202210663688.6A CN202210663688A CN115031771A CN 115031771 A CN115031771 A CN 115031771A CN 202210663688 A CN202210663688 A CN 202210663688A CN 115031771 A CN115031771 A CN 115031771A
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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Abstract
The invention provides a life test device and a life test system, which comprise: the device comprises a testing machine mechanism, a groove-shaped photoelectric switch, a signal processing module and a control module; the testing machine mechanism, the groove-shaped photoelectric switch and the signal processing module are all in communication connection with the control module; the testing machine mechanism is used for fixing the photoelectric sensor to be tested and intermittently reflecting optical signals to the photoelectric sensor; the photoelectric sensor is used for outputting a test signal based on the intermittent optical signal; the signal processing module is used for acquiring a test signal and sending the test signal to the control module; the groove-shaped photoelectric switch is used for outputting a switch signal and sending the switch signal to the control module; the switching signal represents the intermittent output condition of the optical signal; the control module is used for determining whether the service life testing device and the photoelectric sensor are in normal output states or not based on the testing signal and the switching signal. Can carry out high-efficient test to diffuse reflection type's photoelectric sensor to real-time monitoring photoelectric sensor's output state, user's experience is felt higher.
Description
Technical Field
The invention relates to the technical field of product testing, in particular to a service life testing device and system.
Background
At present, a service life tester of the photoelectric sensor on the market cannot test the service life of the diffuse reflection type photoelectric sensor. In addition, the life tester on the market cannot monitor the digital output of the product in real time during testing, and the photoelectric sensor needs to be disassembled to check whether the output function is normal. Therefore, the life tester cannot detect whether or not the output of the photosensor at the time of testing is normal, and cannot detect a temporary abnormality. In addition, the service life tester on the market has low testing efficiency, long testing period and poor user experience.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a life test device and system, which can perform an efficient test on a diffuse reflection type photoelectric sensor, monitor an output state of the photoelectric sensor in real time, and provide a user with a high experience.
In a first aspect, an embodiment of the present invention provides a life test apparatus, where the life test apparatus includes: the device comprises a testing machine mechanism, a groove-shaped photoelectric switch, a signal processing module and a control module; the testing machine mechanism, the groove-shaped photoelectric switch and the signal processing module are all in communication connection with the control module; the testing machine mechanism is used for fixing the photoelectric sensor to be tested and intermittently reflecting optical signals to the photoelectric sensor; the photoelectric sensor is used for outputting a test signal based on the intermittent optical signal; the signal processing module is used for acquiring a test signal and sending the test signal to the control module; the groove-shaped photoelectric switch is used for outputting a switch signal and sending the switch signal to the control module; the switching signal represents the intermittent output condition of the optical signal; the control module is used for determining whether the service life testing device and the photoelectric sensor are in normal output states or not based on the testing signal and the switching signal.
In a preferred embodiment of the present application, the life test apparatus further includes: the servo motor is in communication connection with the control module; the testing machine mechanism comprises a base, a turntable rotating device and a test product fixing device; the photoelectric sensor is arranged on the test product fixing device, and the groove type photoelectric switch is arranged on the turntable rotating device; the turntable rotating device comprises a turntable; the turntable comprises a black area and a white area; the servo motor is used for controlling the rotation of the turntable; if the optical axis between the optical signal and the photoelectric sensor is shielded by a white area, the photoelectric sensor outputs a first test signal, and if the optical axis is shielded by a black area, the photoelectric sensor outputs a second test signal; if the optical axis is shielded by the white area, the groove-type photoelectric switch outputs a first switching signal; if the optical axis is blocked by the black area, the groove-type photoelectric switch outputs a second switching signal.
In a preferred embodiment of the present invention, the photoelectric sensors are symmetrically installed along a horizontal vertical line of a central axis of the turntable.
In a preferred embodiment of the present application, a slide rail is disposed on the base of the testing machine mechanism, and the test product fixing device slides along the slide rail.
In a preferred embodiment of the present application, the life test apparatus further includes: the industrial control touch screen is in communication connection with the control module; the industrial control touch screen is used for responding to parameter setting operation of a user and determining a first test parameter of the service life testing device; the servo motor controls the rotation of the turntable based on the first test parameter; the industrial control touch screen is also used for responding to the output display operation of a user, acquiring the test signal and the switch signal from the control module and displaying the test signal and the switch signal.
In a preferred embodiment of the present application, the control module is further configured to send an alarm signal if the life testing device or the photoelectric sensor is not in a normal output state.
In a second aspect, an embodiment of the present invention further provides a life test system, where the life test system includes: the upper computer and the service life testing device are arranged on the base; the upper computer is connected with the service life testing device; the upper computer is used for sending the second test parameters to the service life testing device; the tester mechanism of the life test device is used for adjusting the light signal reflected to the photoelectric sensor intermittently based on the second test parameter.
In a preferred embodiment of the present application, the control module of the life testing apparatus is further configured to send a test signal and a switch signal to an upper computer; the upper computer is also used for drawing a test chart of the photoelectric sensor based on the test signal and the switch signal.
In a preferred embodiment of the present invention, the life test system further includes: the server is connected with the upper computer; the upper computer is also used for sending the test signal and the switch signal to the server.
In a preferred embodiment of the present application, the life test system further includes a camera device, and the camera device is connected to the server; the camera device is used for collecting a test video of the service life testing device and sending the test video to the server.
The embodiment of the invention has the following beneficial effects:
according to the service life testing device and system provided by the embodiment of the invention, the testing machine mechanism intermittently reflects the optical signal to the photoelectric sensor; the photoelectric sensor outputs a test signal based on the intermittent optical signal; the signal processing module collects a test signal and sends the test signal to the control module; the groove-type photoelectric switch outputs a switching signal representing the intermittent output condition of the optical signal and sends the switching signal to the control module; the control module determines whether the service life testing device and the photoelectric sensor are in normal output states or not based on the testing signal and the switching signal. In this mode, can carry out high-efficient test to the photoelectric sensor of diffuse reflection type to monitor photoelectric sensor's output state in real time, user's experience is felt highly.
Additional features and advantages of the disclosure will be set forth in the description which follows, or in part may be learned by the practice of the above-described techniques of the disclosure, or may be learned by practice of the disclosure.
In order to make the aforementioned objects, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with figures are described in detail below.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a life testing apparatus according to an embodiment of the present invention;
fig. 2 is a front view of a life testing apparatus according to an embodiment of the present invention;
FIG. 3 is a side view of a life testing apparatus according to an embodiment of the present invention;
fig. 4 is a top view of a life testing apparatus according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of a life test system according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a life test system according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, a service life tester of the photoelectric sensor on the market cannot test the service life of the diffuse reflection type photoelectric sensor. In addition, the life test machine on the market can not monitor the digital output of the product in real time during testing, and the photoelectric sensor needs to be disassembled to check whether the output function is normal. Therefore, the life tester cannot detect whether or not the output of the photosensor during the test is normal, and cannot detect a temporary abnormality. In addition, the service life testing machine on the market has the advantages of low testing efficiency, long testing period and poor user experience.
Based on this, the embodiment of the invention provides a life test device and system, and particularly provides an intelligent life test machine for a diffuse reflection photoelectric switch sensor, which can be applied to reliability life test of the diffuse reflection photoelectric switch sensor. The testing machine system provided by the embodiment is composed of an upper computer and a lower computer, and is matched with each other to realize efficient testing of the diffuse reflection type photoelectric sensor and monitor the output state of a product in real time.
For the convenience of understanding the present embodiment, a life test device disclosed in the embodiment of the present invention will be described in detail first.
The first embodiment is as follows:
an embodiment of the present invention provides a life testing apparatus, referring to a schematic structural diagram of a life testing apparatus shown in fig. 1, the life testing apparatus includes: the device comprises a testing machine mechanism, a groove-shaped photoelectric switch, a signal processing module and a control module; the testing machine mechanism, the groove-shaped photoelectric switch and the signal processing module are all in communication connection with the control module.
The testing machine mechanism is used for fixing the photoelectric sensor to be tested and intermittently reflecting optical signals to the photoelectric sensor; the photoelectric sensor is used for outputting a test signal based on the intermittent optical signal; the signal processing module is used for acquiring a test signal and sending the test signal to the control module; the groove-shaped photoelectric switch is used for outputting a switch signal and sending the switch signal to the control module; the switching signal represents the intermittent output condition of the optical signal; the control module is used for determining whether the service life testing device and the photoelectric sensor are in normal output states or not based on the testing signal and the switching signal.
The photoelectric sensor in this embodiment may be a diffuse-reflective photoelectric switch sensor, and the control module in this embodiment may be a PLC (Programmable Logic Controller). The photoelectric sensor can be arranged in the testing machine mechanism, the testing machine mechanism intermittently reflects light signals to the photoelectric sensor, the photoelectric sensor can feed back test signals when receiving the light signals, the test signals are received by the signal processing module, and the signal processing module sends the test signals to the control module.
The switching signal output by the groove-type photoelectric switch can represent the intermittent output condition of the optical signal, and can be as follows: the groove-type photoelectric switch outputs a switching signal only when an optical signal is output. The control module may obtain the switching signal.
Therefore, the control module may determine whether the life test device and the photosensor are both in a normal output state based on the test signal and the switching signal. For example: the test signal and the switch signal are intermittently increased or decreased at the same time, and it can be understood that the life test device and the photoelectric sensor are both in a normal output state. If the test signal and the switching signal are different, or are not intermittently increased or decreased, it is understood that at least one of the life test device and the photosensor is not in a normal output state.
According to the service life testing device provided by the embodiment of the invention, a testing machine mechanism intermittently reflects optical signals to a photoelectric sensor; the photoelectric sensor outputs a test signal based on the intermittent optical signal; the signal processing module collects a test signal and sends the test signal to the control module; the groove-type photoelectric switch outputs a switching signal representing the intermittent output condition of the optical signal and sends the switching signal to the control module; the control module determines whether the service life testing device and the photoelectric sensor are in normal output states or not based on the testing signal and the switching signal. In this mode, can carry out high-efficient test to the photoelectric sensor of diffuse reflection type to the output state of photoelectric sensor is monitored in real time, and user's experience is felt highly.
Example two:
an embodiment of the present invention provides another life testing device, which is shown in a front view of the life testing device shown in fig. 2, a side view of the life testing device shown in fig. 3, and a top view of the life testing device shown in fig. 4. As shown in fig. 2 to 4, the life test apparatus further includes: the servo motor is in communication connection with the control module, and the test machine mechanism comprises a base, a turntable rotating device and a test product fixing device; the photoelectric sensor is arranged on the test product fixing device, and the groove type photoelectric switch is arranged on the turntable rotating device; the turntable rotating device comprises a turntable; the turntable comprises a black area and a white area; the servo motor is used for controlling the rotation of the turntable.
If an optical axis between the optical signal and the photoelectric sensor is shielded by a white area, the photoelectric sensor outputs a first test signal, and if the optical axis is shielded by a black area, the photoelectric sensor outputs a second test signal; if the optical axis is shielded by the white area, the groove-type photoelectric switch outputs a first switching signal; if the optical axis is blocked by the black area, the groove-type photoelectric switch outputs a second switching signal.
The service life testing device of the embodiment can be used for testing the reliability service life of the diffuse reflection photoelectric sensor. As shown in fig. 2 to 4, the mechanism part of the present embodiment includes a base, a turntable rotating device, and a test product fixing device; the electric control part consists of an upper computer, a lower computer (a PLC, an industrial control touch screen and the like) and a control element (a servo motor).
The service life testing device drives the rotary table to rotate, the rotating speed can be accurately controlled, matt white paper (a diffuse reflection photoelectric sensor standard detection material) is arranged ON the surface of the rotary table, as shown in fig. 2, the white paper is printed in black and white at intervals in a full circle of 4 equal parts, and when an optical axis of a tested product (namely a photoelectric sensor) is located at a white area position, normal reflection light is received and output as ON (when a default setting is carried out, namely a first testing signal); when the optical axis of the test product is at the black area position, only a very small amount of reflected light is received and output as OFF due to black absorption (at the default setting, i.e., the second test signal). Therefore, the rotary disc only needs to rotate in one direction to realize the ON/OFF alternative output of the diffuse reflection photoelectric sensor, namely the alternative output of the first test signal and the second test signal.
The control module can monitor real-time output conditions of various test products under respective test voltage levels through the connected signal processing module. In addition, the control module can control the servo motor to work through a program and can also receive a first switching signal and a second switching signal which are sent by the groove type photoelectric switch.
Specifically, the photoelectric sensors in this embodiment are symmetrically installed on both sides along the horizontal and vertical line of the central axis of the turntable. Can install 3 photoelectric sensor on one side, can test 6 photoelectric sensor simultaneously, the carousel size that can significantly reduce is installed like this, and then reduces motor power and reduce equipment volume.
Specifically, the base of the testing machine mechanism of the embodiment is provided with a slide rail, and the test product fixing device slides along the slide rail to adapt to the test of diffuse reflection photoelectric sensor products with different detection distances.
Specifically, the life test apparatus of the present embodiment further includes: the industrial control touch screen is in communication connection with the control module; the industrial control touch screen is used for responding to parameter setting operation of a user and determining a first test parameter of the service life testing device; the servo motor controls the rotation of the turntable based on the first test parameter; the industrial control touch screen is also used for responding to the output display operation of a user, acquiring the test signal and the switch signal from the control module and displaying the test signal and the switch signal.
The control module (such as PLC) can be connected with the industrial control touch screen through an RS232 serial port to interact interface data. The tester can set parameters such as testing speed, testing target period, detection feedback type and the like on an industrial control touch screen interface, and check the current testing state and start and stop of the operating equipment.
In addition, if the service life testing device or the photoelectric sensor is not in a normal output state, the control module is also used for sending out an alarm signal. The alarm signal may be a sound signal or a light signal to remind the user to find as soon as possible.
Example three:
an embodiment of the present invention provides a life test system, referring to a schematic structural diagram of the life test system shown in fig. 5, where the life test apparatus includes: the service life testing device comprises an upper computer and a service life testing device; the upper computer is used for sending the second test parameters to the service life testing device; the tester mechanism of the life test device is used for adjusting the light signal reflected to the photoelectric sensor intermittently based on the second test parameter.
The tester can also set test parameters such as test target period, speed, feedback detection type and the like as second test parameters on a Labview (laboratory virtual instrument engineering platform) software interface of the upper computer, the second test parameters are written into a PLC (control module) of the lower computer through a USB-RS 232 serial port, and the PLC of the lower computer controls a servo motor to drive a turntable to rotate through programs and the set parameters, so that a test product can work alternately between normal reflected light and little reflected light.
The PLC of the lower computer can set a target test period through a program to automatically and circularly test, collect feedback signals of a test product, automatically judge a test result, upload test data to the upper computer and transmit the test data to the server through the upper computer.
Particularly, the PLC of the lower computer collects ON/OFF output signals (namely test signals) of test products through a signal processing module, collects switch signals of a groove-shaped photoelectric switch installed ON a rotary disc rotating device, judges whether the test products are in a white area position or a black area position of the rotary disc, further judges whether the output of the test products is normal, stops testing immediately once the test is abnormal, sends out alarm sound to prompt a worker to check a test site in time, and uploads the test site to the upper computer.
The service life testing device provided by the embodiment of the invention provides diffuse reflection photoelectric sensor service life testing equipment controlled by an upper computer and a lower computer in a combined manner, and can realize reliability testing of a diffuse reflection photoelectric sensor; the high-efficiency test of 50 times/second alternation can be realized; the ON/OFF output state of the product can be detected in real time, and when abnormal output is detected, an alarm is triggered immediately; the device action and test interface can be monitored in real time. The intelligent life test device of the diffuse reflection photoelectric sensor integrates the functions.
This embodiment can adopt servo motor to drive the carousel rotatory, but test speed accurate control and digit set for. The surface of the turntable provided by the embodiment is matt white paper (standard detection material of diffuse reflection photoelectric switch), the white paper is divided into 4 equal circles, black and white are printed alternately, and the turntable can realize ON/OFF alternate output of the diffuse reflection photoelectric sensor only by rotating in one direction.
This embodiment can test 6 photoelectric sensor simultaneously, divides both sides symmetry installation photoelectric sensor on the horizontal perpendicular line along the carousel center pin on test product fixing device, can install 3 photoelectric sensor on one side, can reduce the carousel size greatly like this, and then reduces motor power and reduce the equipment volume. This embodiment can be equipped with the slide rail on the base, and test product fixing device can freely slide on the slide rail to the test of the diffuse reflection photoelectric sensor product of different detection distances is adapted.
Example four:
an embodiment of the present invention provides a life test system, referring to a schematic diagram of a life test system shown in fig. 6, where the life test apparatus further includes: the method comprises the following steps: the server is connected with the upper computer; the upper computer is also used for sending the test signal and the switch signal to the server. The upper computer can be connected with the server through the Ethernet and uploads the test signal and the switch signal as test data.
Specifically, the control module of the life test device is also used for sending a test signal and a switch signal to an upper computer; the upper computer is also used for drawing a test chart of the photoelectric sensor based on the test signal and the switch signal.
The upper computer can be communicated with the control module in an interactive mode through a USB-RS 232 interface to acquire the test signals and the switch signals, and after the test signals and the switch signals uploaded by the control module are acquired, an intuitive curve chart can be formed on the control interface of the upper computer and uploaded to a server for relevant personnel to check.
As shown in fig. 6, the life test system further includes a camera device, and the camera device is connected to the server; the camera device is used for collecting a test video of the service life testing device and sending the test video to the server.
The image pickup Device may be a CCD (Charge-coupled Device) camera, and the CCD camera may be connected to the server through the ethernet, and the test condition recorded by the CCD may be uploaded to the server, so that the user may record and remotely view the test condition.
The action of the life test system can be remotely monitored through the camera device. Therefore, the current test condition and the test condition of each time period before selection can be observed in real time outside, and a test interface can be remotely viewed through a webpage. Integrated visual surveillance with real-time remote sharing of data.
The life test system provided by the embodiment can be composed of an upper computer and a lower computer, and the upper computer and the lower computer are matched with each other to complete the setting of test conditions and the acquisition and judgment of data, and generate documents such as test records, reports and the like. The ON/OFF alternating output of 50 cycles can be completed at most every second. And whether the output of the test product is normal or not is monitored in real time under the high-speed test. And the test data is collected by the upper computer and uploaded to the server to realize remote monitoring and sharing.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the intelligent life testing system described above may refer to the corresponding process in the embodiment of the intelligent life testing apparatus, and is not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the following descriptions are only illustrative and not restrictive, and that the scope of the present invention is not limited to the above embodiments: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A life test apparatus, characterized in that the life test apparatus comprises: the device comprises a testing machine mechanism, a groove-shaped photoelectric switch, a signal processing module and a control module; the testing machine mechanism, the groove-shaped photoelectric switch and the signal processing module are all in communication connection with the control module;
the testing machine mechanism is used for fixing a photoelectric sensor to be tested and intermittently reflecting optical signals to the photoelectric sensor;
the photoelectric sensor is used for outputting a test signal based on the light signal intermittently;
the signal processing module is used for acquiring the test signal and sending the test signal to the control module;
the groove-shaped photoelectric switch is used for outputting a switch signal and sending the switch signal to the control module; wherein the switching signal characterizes an intermittent output condition of the optical signal;
the control module is used for determining whether the service life testing device and the photoelectric sensor are in normal output states or not based on the testing signal and the switching signal.
2. The life span testing device of claim 1, further comprising: the servo motor is in communication connection with the control module; the testing machine mechanism comprises a base, a turntable rotating device and a test product fixing device; the photoelectric sensor is arranged on the test product fixing device, and the groove-shaped photoelectric switch is arranged on the turntable rotating device;
the turntable rotating device comprises a turntable; the turntable comprises a black area and a white area; the servo motor is used for controlling the rotation of the turntable;
if an optical axis between the optical signal and the photoelectric sensor is shielded by the white area, the photoelectric sensor outputs a first test signal, and if the optical axis is shielded by the black area, the photoelectric sensor outputs a second test signal;
if the optical axis is shielded by the white area, the groove-type photoelectric switch outputs a first switch signal; and if the optical axis is shielded by the black area, the groove-type photoelectric switch outputs a second switch signal.
3. The life span testing device of claim 2, wherein the photoelectric sensors are symmetrically installed along a horizontal vertical line of a central axis of the turntable.
4. The life test device of claim 2, wherein a slide rail is disposed on a base of the tester mechanism, and the test product fixture slides along the slide rail.
5. The life span testing device of claim 4, further comprising: the industrial control touch screen is in communication connection with the control module;
the industrial control touch screen is used for responding to parameter setting operation of a user and determining a first test parameter of the service life testing device; the servo motor controls the rotary disc to rotate based on the first test parameter;
the industrial control touch screen is also used for responding to the output display operation of a user, acquiring the test signal and the switch signal from the control module and displaying the test signal and the switch signal.
6. The life testing device of claim 1, wherein the control module is further configured to send an alarm signal if the life testing device or the photoelectric sensor is not in the normal output state.
7. A life testing system, comprising: a host computer and the life testing device of any one of claims 1-6; the upper computer is connected with the service life testing device;
the upper computer is used for sending a second test parameter to the life test device;
the tester mechanism of the life test device is used for adjusting the light signals intermittently reflected to the photoelectric sensor based on the second test parameters.
8. The life test system of claim 7, wherein the control module of the life test device is further configured to send a test signal and a switch signal to the upper computer;
and the upper computer is also used for drawing a test chart of the photoelectric sensor based on the test signal and the switch signal.
9. The life testing system of claim 8, further comprising: the server is connected with the upper computer;
the upper computer is also used for sending the test signal and the switch signal to the server.
10. The life test system of claim 9, further comprising a camera device, the camera device being connected to the server;
the camera device is used for collecting the test video of the service life testing device and sending the test video to the server.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210663688.6A CN115031771A (en) | 2022-06-10 | 2022-06-10 | Life testing device and system |
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| CN202210663688.6A CN115031771A (en) | 2022-06-10 | 2022-06-10 | Life testing device and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116242414A (en) * | 2023-05-12 | 2023-06-09 | 深圳深浦电气有限公司 | Response time detection system and detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116242414A (en) * | 2023-05-12 | 2023-06-09 | 深圳深浦电气有限公司 | Response time detection system and detection device |
| CN116242414B (en) * | 2023-05-12 | 2023-08-11 | 深圳深浦电气有限公司 | Response time detection system and detection device |
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