Proximity switch performance test system

Abstract

The invention provides a proximity switch performance test system, which comprises a base on which a proximity switch is arranged; the test fluted disc is rotationally arranged on the base, and the detection end of the proximity switch is arranged opposite to the test fluted disc in the radial direction of the test fluted disc; the driving mechanism is arranged on the base, and the power output end of the driving mechanism is connected with the power input end of the test fluted disc; the signal input end of the control module is connected with the signal output end of the proximity switch, and the signal output end of the control module is connected with the signal input end of the driving mechanism. According to the proximity switch performance test system, the control module controls the driving mechanism to drive the test fluted disc to rotate and collects the detection signal of the proximity switch, so that the response time, the action distance and the action stability of the proximity switch are obtained, and comprehensive performance index test of the proximity switch is achieved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of proximity switch testing, in particular to a proximity switch performance testing system. BACKGROUND

[0002] A proximity switch is a sensor that can detect position without mechanical contact with moving parts, widely used in automation equipment, such as equipment distance detection, speed measurement, limit control, etc. in power plants. It outputs a detection signal by sensing the proximity state of a target object, and has the advantages of reliable action, stable performance, fast response, strong anti-interference ability, long service life, and waterproof, shockproof, corrosion-resistant, etc.

[0003] However, in order to ensure the reliability and stability of the proximity switch in actual application, it must be periodically tested for performance. The current detection methods are mostly manual testing or using simple circuit boards for function verification, and the performance indicators of the test are not comprehensive, for example, only whether the switch acts can be detected, and key performance parameters such as response time and action distance of the proximity switch cannot be recorded, making it difficult to meet the performance testing needs of the proximity switch. SUMMARY

[0004] The present disclosure aims to at least partially solve one of the technical problems in the related art.

[0005] To this end, the purpose of the present disclosure is to provide a proximity switch performance testing system.

[0006] To achieve the above purpose, the present disclosure provides a proximity switch performance testing system, comprising: a base, the proximity switch is arranged on the base; a test gear disc, the test gear disc is rotationally arranged on the base, and the detection end of the proximity switch is arranged opposite to the test gear disc along the radial direction of the test gear disc; a driving mechanism, the driving mechanism is arranged on the base, and the power output end of the driving mechanism is connected to the power input end of the test gear disc; a control module, the signal input end of the control module is connected to the signal output end of the proximity switch, and the signal output end of the control module is connected to the signal input end of the driving mechanism, the control module is used to control the driving mechanism to drive the test gear disc to rotate, and collect the detection signal of the proximity switch, so as to obtain the response time, action distance and action stability of the proximity switch.

[0007] Optionally, the system further comprises a three-axis motion platform, the three-axis motion platform is arranged on the base, and the proximity switch is arranged on the moving end of the three-axis motion platform, the three-axis motion platform is used to drive the proximity switch to move in three axes; and a distance acquisition unit, the distance acquisition unit is arranged on the moving end of the three-axis motion platform, and the distance acquisition unit is used to acquire the distance from the detection end of the proximity switch to the test gear disc; wherein the signal output end of the control module is connected with the signal input end of the three-axis motion platform, and the signal input end of the control module is connected with the signal output end of the distance acquisition unit, the control module is used to control the driving mechanism to drive the test gear disc to rotate, and control the three-axis motion platform to drive the proximity switch to move in the direction of approaching the test gear disc until the proximity switch outputs a detection signal, and record the current distance from the detection end of the proximity switch to the test gear disc as the action distance of the proximity switch.

[0008] Optionally, the control module is further used to control the three-axis motion platform to drive the proximity switch to reciprocate in the direction of approaching or moving away from the test gear disc, so as to obtain multiple sets of distances from the detection end of the proximity switch to the test gear disc, and take the average value of the multiple sets of distances as the final action distance of the proximity switch.

[0009] Optionally, the system further comprises an encoder, the detection end of the encoder is connected with the test gear disc, and the encoder is used to detect the rotation angle of the test gear disc; wherein the signal input end of the control module is connected with the signal output end of the encoder, and the control module is used to control the driving mechanism to drive the test gear disc to rotate, record the first time when the target tooth tip of the test gear disc reaches the detection position based on the rotation angle of the test gear disc, record the second time when the proximity switch detects the target tooth tip and outputs a detection signal, and take the time difference between the first time and the second time as the response time of the proximity switch.

[0010] Optionally, the control module is used to record the third time when the detection signal is received, and remove the circuit delay time between the proximity switch and the control module from the third time, so as to obtain the second time.

[0011] Optionally, the control module is used to control the driving mechanism to drive the test gear disc to rotate, calculate the theoretical trigger number of the proximity switch according to the number of teeth and the number of turns of the test gear disc, record the actual trigger number of the proximity switch according to the detection signal output by the proximity switch, and evaluate the action stability of the proximity switch according to the proportion of the actual trigger number in the theoretical trigger number.

[0012] Optionally, the control module is further configured to compare the proportion of the actual triggering times in the theoretical triggering times with a preset proportion, and determine that the action stability of the proximity switch is not up to standard when the proportion of the actual triggering times in the theoretical triggering times is less than the preset proportion.

[0013] Optionally, the control module comprises a collection unit, a signal input end of the collection unit being connected with a signal output end of the proximity switch; and a control unit, a signal input end of the control unit being connected with a signal output end of the collection unit, and a signal output end of the control module being connected with a signal input end of the driving mechanism, the control unit being configured to control the driving mechanism to drive the test gear disc to rotate, and collect the detection signal of the proximity switch by using the collection unit, so as to obtain the response time, action distance and action stability of the proximity switch.

[0014] Optionally, the control module further comprises a touch display unit, a signal input end of the touch display unit being connected with a signal output end of the control unit, and the touch display unit being configured to display the response time, action distance and action stability of the proximity switch, and a signal output end of the touch display unit being connected with a signal input end of the control unit, and the touch display unit being configured to input a control instruction to the control unit.

[0015] Optionally, the system further comprises a power module, a power output end of the power module being connected with a power input end of the driving mechanism and a power input end of the control module respectively.

[0016] The technical scheme provided by the present disclosure can include the following beneficial effects:

[0017] Since the detection end of the proximity switch is arranged along the radial direction of the test gear disc and opposite to the test gear disc, and the power output end of the driving mechanism is connected with the power input end of the test gear disc, the driving mechanism can drive the test gear disc to rotate, so that the tooth top and tooth groove of the test gear disc pass through the detection end of the proximity switch in turn, and the detection signal of the proximity switch is output. In addition, since the signal input end of the control module is connected with the signal output end of the proximity switch, and the signal output end of the control module is connected with the signal input end of the driving mechanism, the control module can control the driving mechanism to drive the test gear disc to rotate, and collect the detection signal of the proximity switch, so as to obtain the response time, action distance and action stability of the proximity switch, and thus the comprehensive performance index test of the proximity switch is realized.

[0018] Additional aspects and advantages of the present disclosure will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above mentioned and / or additional aspects and advantages of the present disclosure will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings:

[0020] Figure 1 is a structural schematic diagram of a proximity switch performance test system according to an embodiment of the present disclosure;

[0021] As shown in the figure: 1, base, 2, test gear, 3, drive mechanism, 4, control module, 41, acquisition unit, 42, control unit, 5, touch display unit;

[0022] 100, proximity switch. DETAILED DESCRIPTION

[0023] The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present disclosure, and cannot be understood as a limitation of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0024] As Figure 1 shown, the present disclosure provides a proximity switch performance test system, comprising: a base 1, a test gear 2, a drive mechanism 3 and a control module 4, a proximity switch 100 is arranged on the base 1, the test gear 2 is rotatably arranged on the base 1, and the detection end of the proximity switch 100 is arranged along the radial direction of the test gear 2 and opposite to the test gear 2, the drive mechanism 3 is arranged on the base 1, and the power output end of the drive mechanism 3 is connected to the power input end of the test gear 2, the signal input end of the control module 4 is connected to the signal output end of the proximity switch 100, and the signal output end of the control module 4 is connected to the signal input end of the drive mechanism 3, the control module 4 is used to control the drive mechanism 3 to drive the test gear 2 to rotate, and acquire the detection signal of the proximity switch 100, so as to obtain the response time, action distance and action stability of the proximity switch 100.

[0025] It can be understood that, since the detection end of the proximity switch 100 is arranged along the radial direction of the test gear disc 2 and opposite to the test gear disc 2, and the power output end of the driving mechanism 3 is connected to the power input end of the test gear disc 2, the driving mechanism 3 can drive the test gear disc 2 to rotate, so that the tooth top and tooth groove of the test gear disc 2 pass through the detection end of the proximity switch 100 in turn, and the proximity switch 100 outputs a detection signal. In addition, since the signal input end of the control module 4 is connected to the signal output end of the proximity switch 100, and the signal output end of the control module 4 is connected to the signal input end of the driving mechanism 3, the control module 4 can control the driving mechanism 3 to drive the test gear disc 2 to rotate, and collect the detection signal of the proximity switch 100, so as to obtain the response time, action distance and action stability of the proximity switch 100, and further realize the comprehensive performance index test of the proximity switch 100.

[0026] It should be noted that the base 1 is used to support the driving mechanism 3, the test gear disc 2 and the like. The specific type of the base 1 can be set according to actual needs, and no limitation is made thereto. For example, the base 1 can be a platform structure, and supports for supporting the driving mechanism 3, the test gear disc 2, the proximity switch 100 and the like are arranged on the platform. The relative position adjustment between the supports can be realized by using a driving structure composed of a motor, a lead screw, a gear and the like.

[0027] The test gear disc 2 has teeth distributed at intervals in the circumferential direction. With the rotation of the test gear disc 2, the tooth top and tooth groove pass through the detection end of the proximity switch 100 in turn, and the proximity switch 100 outputs a detection signal accordingly. In addition, by using different rotation speeds and acceleration / deceleration of different test gear discs 2, different test working conditions of the proximity switch 100 can be realized. The specific type of the test gear disc 2 can be set according to actual needs, and no limitation is made thereto. For example, the central rotating shaft of the test gear disc 2 can be arranged on the support of the base 1 by using a bearing, or can be coaxially arranged on the output shaft of the driving mechanism 3.

[0028] The driving mechanism 3 is used to drive the test gear disc 2 to rotate. The specific type of the driving mechanism 3 can be set according to actual needs, and no limitation is made thereto. For example, the driving mechanism 3 can include a driving motor (for example, a brushless motor). In addition, a speed reducer, a driver, an overcurrent protection device and the like can also be configured. The driving motor drives the test gear disc 2 to a rated rotation speed, so as to realize stable test of the proximity switch 100.

[0029] The control module 4 is used to control the driving mechanism 3 to drive the test gear disc 2 to rotate, receive the detection signal of the proximity switch 100, and determine the response time, action distance and action stability of the proximity switch 100 based on the rotation angle, rotation speed, rotation number of the test gear disc 2, the distance between the test gear disc 2 and the proximity switch 100 and the like.

[0030] In some embodiments, the system further comprises a three-axis motion platform and a distance acquisition unit 41, the three-axis motion platform is arranged on the base 1, and the proximity switch 100 is arranged on the moving end of the three-axis motion platform, the three-axis motion platform is used to drive the proximity switch 100 to move in three axes, and the distance acquisition unit 41 is arranged on the moving end of the three-axis motion platform, and the distance acquisition unit 41 is used to acquire the distance from the detection end of the proximity switch 100 to the test gear disc 2.

[0031] The signal output end of the control module 4 is connected with the signal input end of the three-axis motion platform, and the signal input end of the control module 4 is connected with the signal output end of the distance acquisition unit 41, the control module 4 is used to control the driving mechanism 3 to drive the test gear disc 2 to rotate, and control the three-axis motion platform to drive the proximity switch 100 to move in the direction of approaching the test gear disc 2 until the proximity switch 100 outputs a detection signal, and record the current distance from the detection end of the proximity switch 100 to the test gear disc 2 as the action distance of the proximity switch 100.

[0032] It can be understood that, since the three-axis motion platform is arranged on the base 1, and the proximity switch 100 is arranged on the moving end of the three-axis motion platform, the proximity switch 100 can adjust the spatial position by using the three-axis motion platform, so that different models and sizes of the proximity switch 100 can be accurately tested by using the test gear disc 2, and since the distance acquisition unit 41 is arranged on the moving end of the three-axis motion platform, the distance acquisition unit 41 can acquire the distance from the detection end of the proximity switch 100 to the test gear disc 2, so that the proximity switch 100 can be accurately controlled in the spatial position by using the distance acquired by the distance acquisition unit 41 in real time.

[0033] In addition, based on the three-axis motion platform and the distance acquisition unit 41, since the signal output end of the control module 4 is connected with the signal input end of the three-axis motion platform, and the signal input end of the control module 4 is connected with the signal output end of the distance acquisition unit 41, the control module 4 can control the driving mechanism 3 to drive the test gear disc 2 to rotate, and control the three-axis motion platform to drive the proximity switch 100 to move in the direction of approaching the test gear disc 2 until the proximity switch 100 outputs a detection signal, and record the current distance from the detection end of the proximity switch 100 to the test gear disc 2 as the action distance of the proximity switch 100, so that the proximity switch 100 can be comprehensively tested in performance indicators.

[0034] It should be noted that the three-axis motion platform is used to drive the proximity switch 100 to move in three axes, for example, x-axis, y-axis and z-axis, and the specific type of the three-axis motion platform can be arranged according to actual needs, which is not limited, for example, the three-axis motion platform can include an x-axis motion mechanism, a y-axis motion mechanism and a z-axis motion mechanism, and the x-axis motion mechanism, the y-axis motion mechanism and the z-axis motion mechanism are respectively composed of a motor, a lead screw and the like.

[0035] The distance acquisition unit 41 is configured to acquire the distance from the detection end of the proximity switch 100 to the test gear disc 2. The distance acquisition unit 41 can be of any type as required, and is not limited. For example, the distance acquisition unit 41 can be a distance sensor.

[0036] In some embodiments, the control module 4 is further configured to control the three-axis motion platform to drive the proximity switch 100 to reciprocate in the direction of approaching or moving away from the test gear disc 2, so as to obtain a plurality of sets of distances from the detection end of the proximity switch 100 to the test gear disc 2, and take the average of the plurality of sets of distances as the final action distance of the proximity switch 100.

[0037] It can be understood that the control module 4 controls the three-axis motion platform to drive the proximity switch 100 to reciprocate relative to the test gear disc 2, so as to obtain a plurality of sets of distances from the detection end of the proximity switch 100 to the test gear disc 2, and take the average of the plurality of sets of distances as the final action distance of the proximity switch 100, thereby excluding the interference of mechanical vibration and the like, and achieving accurate testing of the action distance.

[0038] It should be noted that the three-axis motion platform drives the proximity switch 100 to move in the direction of approaching the test gear disc 2 until the proximity switch 100 outputs a detection signal, and the three-axis motion platform drives the proximity switch 100 to move in the direction of moving away from the test gear disc 2 so as to reset the proximity switch 100. In this way, the proximity switch 100 is reciprocated repeatedly to obtain a plurality of sets of distances.

[0039] In some embodiments, the system further comprises an encoder, a detection end of the encoder being connected to the test gear disc 2, and the encoder being configured to detect the rotation angle of the test gear disc 2. The signal input end of the control module 4 is connected to the signal output end of the encoder, and the control module 4 is configured to control the driving mechanism 3 to drive the test gear disc 2 to rotate, record a first time when a target tooth tip of the test gear disc 2 reaches a detection position based on the rotation angle of the test gear disc 2, record a second time when the proximity switch 100 detects the target tooth tip and outputs a detection signal, and take the time difference between the first time and the second time as the response time of the proximity switch 100.

[0040] It can be understood that, since the detection end of the encoder is connected to the test gear disc 2 and the signal input end of the control module 4 is connected to the signal output end of the encoder, the control module 4 can obtain the rotation angle of the test gear disc 2 by using the encoder, so as to determine whether the target tooth tip reaches the detection position based on the corresponding relationship between different rotation angles of the test gear disc 2 and different tooth tips.

[0041] Based on this, the control module 4 controls the driving mechanism 3 to drive the test gear disc 2 to rotate, records a first time when the target tooth tip of the test gear disc 2 reaches the detection position based on the rotation angle of the test gear disc 2, records a second time when the proximity switch 100 detects the target tooth tip and sends a detection signal, and takes the time difference between the first time and the second time as the response time of the proximity switch 100, thereby ensuring that the proximity switch 100 can realize comprehensive testing of performance indicators.

[0042] It should be noted that the proximity switch 100 starts to respond when the target tooth tip of the test gear disc 2 reaches the detection position, and the proximity switch 100 ends to respond when the proximity switch 100 detects the target tooth tip and sends a detection signal, thereby taking the time difference between the first time and the second time as the response time of the proximity switch 100, and realizing accurate collection of the response time of the proximity switch 100.

[0043] The encoder is used to obtain the rotation angle of the test gear disc 2, so as to determine the position of the target tooth tip according to the rotation angle of the gear disc. The specific type of the encoder can be set according to actual needs, which is not limited.

[0044] In some embodiments, the control module 4 is configured to record a third time when the detection signal is received, and remove the circuit delay time between the proximity switch 100 and the control module 4 from the third time to obtain the second time.

[0045] It can be understood that the control module 4 records a third time when the detection signal is received, and removes the circuit delay time between the proximity switch 100 and the control module 4 from the third time to obtain the second time, thereby ensuring accurate testing of the response time of the proximity switch 100.

[0046] It should be noted that there are signal transmission routes, signal switching terminals and the like between the proximity switch 100 and the control module 4. Directly taking the third time when the control module 4 receives the detection signal to calculate the response time of the proximity switch 100 will cause a large error. Therefore, in the embodiment, the circuit delay time between the proximity switch 100 and the control module 4 is removed from the third time to obtain accurate second time. Moreover, the circuit delay time between the proximity switch 100 and the control module 4 can be obtained by test, which is not limited.

[0047] In some embodiments, the control module 4 is configured to control the driving mechanism 3 to drive the test gear disc 2 to rotate, calculate the theoretical trigger times of the proximity switch 100 according to the number of teeth and the number of turns of the test gear disc 2, record the actual trigger times of the proximity switch 100 according to the detection signal sent by the proximity switch 100, and evaluate the action stability of the proximity switch 100 according to the proportion of the actual trigger times in the theoretical trigger times.

[0048] Understandably, the theoretical number of triggers of proximity switch 100 is calculated based on the number of teeth and the number of turns of test gear 2, and the actual number of triggers of proximity switch 100 is recorded based on the detection signal emitted by proximity switch 100. The stability of the operation of proximity switch 100 is evaluated based on the proportion of the actual number of triggers to the theoretical number of triggers, thereby ensuring that proximity switch 100 can achieve comprehensive testing of performance indicators.

[0049] It should be noted that the theoretical number of triggers of proximity switch 100 can be obtained by multiplying the number of teeth and the number of revolutions of test toothed disc 2, while the actual number of triggers of proximity switch 100 can be obtained by the number of detection signals emitted by proximity switch 100. Therefore, based on the comparison between the theoretical number of triggers and the actual number of triggers, it is possible to effectively determine whether the operation of proximity switch 100 is stable.

[0050] The number of revolutions of test gear 2 can be obtained by the encoder located on test gear 2.

[0051] In some embodiments, the control module 4 is further used to compare the proportion of the actual number of triggers to the theoretical number of triggers with a preset proportion, and when the proportion of the actual number of triggers to the theoretical number of triggers is less than the preset proportion, it is determined that the stability of the proximity switch 100 is not up to standard.

[0052] Understandably, when the actual number of triggers is less than the preset percentage of theoretical triggers, the control module 4 determines that the stability of the proximity switch 100's operation is substandard; conversely, when the actual number of triggers is greater than or equal to the preset percentage, the control module 4 determines that the stability of the proximity switch 100's operation is up to standard. Thus, by comparing the calculated percentage with the preset percentage, the control module 4 achieves accurate and flexible judgment of the stability of the proximity switch 100's operation.

[0053] It should be noted that the preset percentage can be 99.9%, 99%, etc., and there are no restrictions on this. However, the actual number of triggers and the theoretical number of triggers need to be supported by a large number of tests.

[0054] like Figure 1 As shown, in some embodiments, the control module 4 includes: a data acquisition unit 41 and a control unit 42. The signal input terminal of the data acquisition unit 41 is connected to the signal output terminal of the proximity switch 100, the signal input terminal of the control unit 42 is connected to the signal output terminal of the data acquisition unit 41, and the signal output terminal of the control module 4 is connected to the signal input terminal of the drive mechanism 3. The control unit 42 is used to control the drive mechanism 3 to drive the test tooth disk 2 to rotate, and to use the data acquisition unit 41 to acquire the detection signal of the proximity switch 100 to obtain the response time, action distance and action stability of the proximity switch 100.

[0055] It can be understood that, since the signal input end of the acquisition unit 41 is connected with the signal output end of the proximity switch 100, the signal input end of the control unit 42 is connected with the signal output end of the acquisition unit 41, and the signal output end of the control module 4 is connected with the signal input end of the driving mechanism 3, the control unit 42 can collect the detection signal of the proximity switch 100 by the acquisition unit 41, and can control the driving mechanism 3 to drive the test gear disc 2 to rotate, so as to stably and accurately obtain the response time, action distance and action stability of the proximity switch 100.

[0056] It should be noted that the acquisition unit 41 is used to transfer the detection signal of the proximity switch 100 to the control module 4, and the specific type of the acquisition unit 41 can be set according to actual needs, which is not limited, for example, the acquisition unit 41 can be a data acquisition card.

[0057] The specific type of the control unit 42 can be set according to actual needs, which is not limited, for example, the control unit 42 can be a PLC controller.

[0058] As shown in Figure 1 In some embodiments, the control module 4 further comprises a touch display unit 5, the signal input end of the touch display unit 5 is connected with the signal output end of the control unit 42, and the touch display unit 5 is used to display the response time, action distance and action stability of the proximity switch 100, and the signal output end of the touch display unit 5 is connected with the signal input end of the control unit 42, and the touch display unit 5 is used to input control instructions to the control unit 42.

[0059] It can be understood that, since the signal input end of the touch display unit 5 is connected with the signal output end of the control unit 42, the touch display unit 5 can display the response time, action distance and action stability of the proximity switch 100, and since the signal output end of the touch display unit 5 is connected with the signal input end of the control unit 42, the touch display unit 5 can input control instructions to the control unit 42. Therefore, by using the touch display unit 5, the performance test of the proximity switch 100 is more flexible and accurate.

[0060] It should be noted that the touch display unit 5 can display the response time, action distance and action stability of the proximity switch 100, and the running data of the control unit 42, in addition, the touch display unit 5 can input the model size and other information of the proximity switch 100 to the control unit 42, and can input the preset proportion and other control vertical to the control unit 42.

[0061] The specific type of the touch display unit 5 can be set according to actual needs, which is not limited, for example, the touch display unit 5 can include a touch display screen, and can also include a running indicator light, a power indicator light, a start button, a stop button, etc.

[0062] In some embodiments, the system further comprises a power module, and the power output end of the power module is connected to the power input end of the driving mechanism 3 and the power input end of the control module 4 respectively.

[0063] It can be understood that, since the power output end of the power module is connected to the power input end of the driving mechanism 3 and the power input end of the control module 4 respectively, the power module can supply power to the driving mechanism 3 and the control module 4, thereby ensuring the stable operation of the driving mechanism 3 and the control module 4.

[0064] It should be noted that the power module is used for power supply of the driving mechanism 3, the control module 4 and the like in the performance test system, and the specific type of the power module can be set according to actual needs, and no limitation is made thereto.

[0065] The embodiment constructs a proximity switch 100 performance test system integrating mechanical motion simulation, electrical control and data acquisition, solves the deficiencies of the prior art in detection means, test precision and applicability. The system of the embodiment simulates the approach and departure process of the target object by the rotating test tooth disc 2, can adjust the test distance and speed, and thereby accurately simulates the working state of the proximity switch 100 under various working conditions. At the same time, the system of the embodiment is equipped with a high-sensitivity data acquisition system and a control system, can record the response time, action distance, action stability and other key parameters of the proximity switch 100 in real time, and realizes automatic test and analysis.

[0066] In summary, the system of the embodiment can automatically control the test conditions, accurately measure and record the response time, action distance and stability and other key parameters of the proximity switch 100, significantly improves the detection efficiency and precision, and thereby provides strong technical support for quality control and reliable operation of the proximity switch 100.

[0067] It should be noted that, in the description of the present disclosure, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0068] Any process or method descriptions in flow charts or otherwise described herein can be understood as representing code modules, segments, or portions of code that include one or more executable instructions for implementing specific logic functions (or steps) in the process, and the various embodiments of the present disclosure include additional implementations in which the functions are performed in different orders, in substantially simultaneous fashion, or in reverse order, and according to other embodiments of the present disclosure, the functions can be performed in accordance with the functions involved, in a substantially simultaneous manner, or in reverse order, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0069] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0070] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary, and cannot be construed as limiting the present disclosure, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. A proximity switch performance testing system, characterized by, The system comprises: a base, wherein the proximity switch is arranged on the base; a test gear disc, which is rotationally arranged on the base, and the detection end of the proximity switch is oppositely arranged along the radial direction of the test gear disc; a driving mechanism, which is arranged on the base, and the power output end of the driving mechanism is connected with the power input end of the test gear disc; a control module, wherein the signal input end of the control module is connected with the signal output end of the proximity switch, and the signal output end of the control module is connected with the signal input end of the driving mechanism, the control module is used for controlling the driving mechanism to drive the test gear disc to rotate, and collecting the detection signal of the proximity switch, so as to obtain the response time, action distance and action stability of the proximity switch.

2. The proximity switch performance testing system of claim 1, wherein, The system further comprises: a three-axis motion platform, which is arranged on the base, and the proximity switch is arranged on the motion end of the three-axis motion platform, the three-axis motion platform is used for driving the proximity switch to move in three axes; a distance collection unit, which is arranged on the motion end of the three-axis motion platform, and the distance collection unit is used for collecting the distance from the detection end of the proximity switch to the test gear disc; wherein the signal output end of the control module is connected with the signal input end of the three-axis motion platform, and the signal input end of the control module is connected with the signal output end of the distance collection unit, the control module is used for controlling the driving mechanism to drive the test gear disc to rotate, and controlling the three-axis motion platform to drive the proximity switch to move in the direction of approaching the test gear disc until the proximity switch outputs the detection signal, and recording the current distance from the detection end of the proximity switch to the test gear disc as the action distance of the proximity switch.

3. The proximity switch performance testing system of claim 2, wherein, The control module is further used for controlling the three-axis motion platform to drive the proximity switch to reciprocally move in the direction of approaching or moving away from the test gear disc, so as to obtain multiple sets of distances from the detection end of the proximity switch to the test gear disc, and taking the average value of the multiple sets of distances as the final action distance of the proximity switch.

4. The proximity switch performance testing system of claim 1, wherein, The system further comprises: an encoder, wherein the detection end of the encoder is connected with the test gear disc, and the encoder is used for detecting the rotation angle of the test gear disc; wherein the signal input end of the control module is connected with the signal output end of the encoder, and the control module is used for controlling the driving mechanism to drive the test gear disc to rotate, recording the first time when the target tooth tip of the test gear disc reaches the detection position based on the rotation angle of the test gear disc, recording the second time when the proximity switch detects the target tooth tip and outputs the detection signal, and taking the time difference between the first time and the second time as the response time of the proximity switch.

5. The proximity switch performance testing system of claim 4, wherein, The control module is used for recording the third time when the detection signal is received, and removing the circuit delay time between the proximity switch and the control module from the third time, so as to obtain the second time.

6. The proximity switch performance testing system of claim 1, wherein, The control module is configured to control the driving mechanism to drive the test gear disc to rotate, calculate a theoretical triggering number of the proximity switch according to a number of teeth and a number of turns of the test gear disc, record an actual triggering number of the proximity switch according to a detection signal emitted by the proximity switch, and evaluate the action stability of the proximity switch according to a proportion of the actual triggering number in the theoretical triggering number.

7. The proximity switch performance testing system of claim 6, wherein, The control module is further configured to compare the proportion of the actual triggering number in the theoretical triggering number with a preset proportion, and determine that the action stability of the proximity switch is not up to standard when the proportion of the actual triggering number in the theoretical triggering number is less than the preset proportion.

8. The proximity switch performance testing system of claim 1, wherein, The control module comprises: a collection unit, a signal input end of the collection unit being connected with a signal output end of the proximity switch; a control unit, a signal input end of the control unit being connected with a signal output end of the collection unit, and a signal output end of the control module being connected with a signal input end of the driving mechanism, the control unit being configured to control the driving mechanism to drive the test gear disc to rotate, and collect the detection signal of the proximity switch by using the collection unit to obtain a response time, an action distance and an action stability of the proximity switch.

9. The proximity switch performance testing system of claim 8, wherein, The control module further comprises: a touch display unit, a signal input end of the touch display unit being connected with a signal output end of the control unit, and the touch display unit being configured to display the response time, the action distance and the action stability of the proximity switch, and a signal output end of the touch display unit being connected with a signal input end of the control unit, and the touch display unit being configured to input a control instruction to the control unit.

10. The proximity switch performance testing system of claim 1, wherein, The system further comprises: a power module, a power output end of the power module being connected with a power input end of the driving mechanism and a power input end of the control module respectively.

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