Sensor detection device

Abstract

The utility model discloses a sensor detection device, and belongs to the field of sensor detection. According to the technical scheme of the invention, the to-be-tested sensor does not need to be tested for many times at the limit sensing distance, and only the power device needs to drive the sensing part to periodically move, so that the sensing part periodically appears at the position of the limit sensing distance of the to-be-tested sensor. Then, the number of times that the sensing part appears at the position of the limit sensing distance of the sensor to be measured is compared with counting of the counter, so that whether the sensor to be measured can sense the sensing part within the limit sensing distance can be measured; the sensing consistency and reliability of the to-be-tested sensor in the limit sensing distance can be measured, automatic testing can be achieved, labor cost is saved, and potential safety hazards and potential quality hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sensor detection, and particularly to a sensor detection device. Background Art

[0002] With the continuous growth of automated production and applications, etc., automated production gradually replaces manual labor. In the unmanned production process, sensors with high-precision, high-stability, and high-reliability precise positioning are more needed. With the improvement of market application requirements, the quality requirements for sensors themselves also increase accordingly. For example, there is no good grasp of the accuracy of comprehensive performance such as sensor sensitivity, reliability, and service life, resulting in the situation that products cannot meet the requirements of high-demanding working environments.

[0003] However, at present, the inspection method for incoming sensors can only rely on manual testing, manual recording of test data, and simple and cumbersome detection methods such as manually calculating and comparing whether they are qualified. Moreover, it is easy to miss inspections, misinspect, make mistakes in recording and calculation, resulting in uncontrollable product quality. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a sensor detection device to solve the problems that the existing sensor inspection method can only rely on manual testing, manual recording of test data, and simple and cumbersome detection methods such as manually calculating and comparing whether they are qualified, and it is easy to miss inspections, misinspect, make mistakes in recording and calculation, resulting in uncontrollable product quality.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] Provide a sensor detection device, including an induction part, a power device, a counter, and a sensor fixing device for fixing the sensor to be tested;

[0007] The power device drives the induction part to move periodically, so that the induction part periodically appears at the position of the limit induction distance of the sensor to be tested;

[0008] When the sensor to be tested senses the induction part, the counter counts.

[0009] Further, the power device is a servo motor, and the induction part includes a turntable and a boss;

[0010] The turntable is connected to the motor shaft of the servo motor through a hole at the center of the circle, so that when the servo motor rotates, it drives the turntable to rotate;

[0011] The boss is arranged at the edge of the turntable, so that the boss rotates following the rotation of the turntable;

[0012] When the boss rotates to a preset position, the boss appears at a position of a limit sensing distance of the sensor to be tested.

[0013] Further, it also includes: a motor workbench;

[0014] The servo motor is arranged on the motor workbench.

[0015] Furthermore, the power device drives the induction part to translate periodically through a transmission device, and the power device is a servo motor or a cylinder.

[0016] Furthermore, the periodic translation includes any one of the following:

[0017] Move up and down;

[0018] Move left and right;

[0019] Move forward and backward.

[0020] Furthermore, the sensor fixing device is arranged on a sliding block, and the sliding block is slidably connected to the linear guide rail.

[0021] Furthermore, it also includes: a distance reference device, wherein the distance reference device has a scale so as to know the distance between the sensor to be tested and the sensing part when adjusting the sensor to be tested.

[0022] Further, it also includes: a control system;

[0023] The control system is electrically connected to the power device and is used to control the movement of the power device.

[0024] Furthermore, the control system is also used to control the movement of the sensor to be tested.

[0025] Furthermore, the sensor fixing device is a clamp.

[0026] This application adopts the above technical solution, which has at least the following beneficial effects:

[0027] The technical solution of the present application provides a sensor detection device, including a sensing part, a power device, a counter, and a sensor fixing device for fixing the sensor to be tested. The power device drives the sensing part to move periodically so that the sensing part periodically appears at the position of the limit sensing distance of the sensor to be tested; when the sensor to be tested senses the sensing part, the counter counts. The present application solution does not need to test the sensor to be tested at the limit sensing distance multiple times. It only needs to drive the sensing part to move periodically through the power device so that the sensing part periodically appears at the position of the limit sensing distance of the sensor to be tested, and then compare the number of times the sensing part appears at the position of the limit sensing distance of the sensor to be tested with the count of the counter. It can not only measure whether the sensor to be tested can sense the sensing part at the limit sensing distance, but also measure the sensing consistency and reliability of the sensor to be tested at the limit sensing distance. The present application solution can realize automated testing, save labor costs, and reduce safety and quality risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of a sensor detection device provided by an embodiment of the utility model;

[0030] Figure 2 It is a front view of a sensing part provided by an embodiment of the utility model;

[0031] Figure 3 It is a side view of a sensing part provided by an embodiment of the utility model;

[0032] Figure 4 It is a structural schematic diagram of a sensor fixing device provided in an embodiment of the utility model.

[0033] Description of reference numerals:

[0034] 1-sensor to be tested, 2-sensor fixing device, 3-counter, 4-power device, 5-sensing part, 51-turntable, 52-boss, 6-motor workbench, 7-linear guide rail, 8-slider, 9-distance reference device, 10-control system. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present utility model is described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other implementation methods obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0036] It is understandable that there is randomness in the sensor testing process. For example, when measuring the maximum sensing distance, the sensor can sense at the extreme sensing distance at certain times, but cannot sense at the extreme sensing distance at certain times. If only one test result is used as the final conclusion, it may not represent the actual situation. Therefore, when testing the sensor, the consistency and reliability of the test must also be considered, that is, whether the multiple measurement results are consistent and whether a single measurement result can accurately represent the sensor performance. However, the existing measurement method can only repeat the measurement, which is cumbersome, and because other conditions cannot be guaranteed to be the same each time the measurement is measured, the measurement result is inaccurate. Using a sensor with inaccurate measurement results can easily lead to uncontrollable product quality.

[0037] Therefore, in order to solve the above problems, Figure 1 As shown, an embodiment of the utility model provides a sensor detection device, including a sensing part 5, a power device 4, a counter 3 and a sensor fixing device 2 for fixing a sensor 1 to be tested; wherein the sensor fixing device 2 is a clamp. Of course, those skilled in the art can determine the specific form of the sensor fixing device 2 according to actual needs. Since the sensor fixing device 2 only serves to fix the sensor, the present application does not make any specific limitation on the sensor fixing device 2.

[0038] The power device 4 drives the sensing part 5 to move periodically so that the sensing part 5 periodically appears at the position of the limit sensing distance of the sensor 1 to be tested; and when the sensing part 5 moves periodically, except for the position of the limit sensing distance of the sensor 1 to be tested, the distance between the sensing part 5 and the sensor 1 to be tested is greater than the limit sensing distance at other positions except the position of the limit sensing distance of the sensor 1 to be tested.

[0039] When the sensor 1 to be tested senses the sensing part 5 , the counter 3 starts counting.

[0040] As a preferred implementation method of the present application, the power device 4 is a servo motor, such as Figure 2 and Figure 3 As shown, the induction component 5 includes a rotating disk 51 and a boss 52;

[0041] The rotating disk 51 is connected to the motor shaft of the servo motor through the hole at the center of the circle, so that when the servo motor rotates, the rotating disk 51 is driven to rotate;

[0042] The boss 52 is arranged on the edge of the rotating disk 51 so that the boss 52 rotates along with the rotating disk 51;

[0043] When the boss 52 rotates to a preset position, the boss 52 appears at a position of a limit sensing distance of the sensor 1 to be tested.

[0044] It is understandable that in order to reduce the rotation time of the motor and improve the measurement efficiency, multiple bosses 52 can be set on the turntable 51, so that each boss 52 can trigger the induction of the sensor to be tested once after the turntable 51 rotates one circle. Compared with only one boss 52, it is equivalent to the turntable 51 rotating one circle. Setting multiple bosses 52 can complete multiple measurements. It should be noted that the distances between the multiple bosses 52 and the center of the turntable 51 should be the same, and during the rotation of the turntable 51, each boss 52 can appear at the position of the limit sensing distance of the sensor 1 to be tested.

[0045] For ease of explanation, a three-dimensional coordinate system is established in the embodiment of the present application. The three-dimensional coordinate system takes the sensor 1 to be tested as the origin O. When the boss 52 appears at the position of the limit sensing distance of the sensor 1 to be tested, the line connecting the sensor 1 to be tested and the boss 52 is used as the X-axis, the straight line perpendicular to the X-axis and passing through the origin on the horizontal plane is used as the Y-axis, and the straight line perpendicular to the X-axis and passing through the origin on the vertical plane is used as the Z-axis.

[0046] Alternatively, if Figure 1 As shown, the turntable 51 is parallel to the YOZ plane. The YOZ plane is a plane formed by the Y axis and the Z axis.

[0047] Optionally, the turntable 51 is parallel to the XOZ plane, wherein the XOZ plane is a plane formed by the X axis and the Z axis.

[0048] Optionally, the turntable 51 is parallel to the XOY plane, wherein the XOY plane is a plane formed by the X-axis and the Y-axis.

[0049] It is understandable that, in fact, the turntable 51 can be set at any angle, and it only needs to ensure that when the turntable 51 rotates with the motor shaft, one boss 52 can only appear at the position of the limit sensing distance of the sensor to be tested 1 once after one rotation, and the rest of the time, the distance between the boss 52 and the sensor to be tested 1 is greater than the limit sensing distance.

[0050] As an optional implementation method of the embodiment of the present application, it also includes: a motor workbench 6;

[0051] The servo motor is arranged on the motor workbench 6 .

[0052] The induction part 5 mentioned in the above embodiment actually performs circular motion under the drive of the motor. As an optional implementation method of the embodiment of the present application, the power device can also drive the induction part to translate periodically through a transmission device. The power device can be a servo motor or a cylinder, and the transmission device can be a screw rod, which is not specifically limited in the present application.

[0053] Periodic translation includes any of the following:

[0054] Move up and down;

[0055] Move left and right;

[0056] Move forward and backward.

[0057] The up and down, left and right, and front and back mentioned therein may be understood as movement in the YOZ plane, XOZ plane, XOY plane, respectively, or movement in a plane parallel to the YOZ plane, the XOZ plane, or the XOY plane.

[0058] It is understandable that the sensing part can actually move at any angle (but in practice it is not convenient to automatically realize the diagonal movement). It only needs to ensure that when the sensing part moves, it can only appear at the position of the limit sensing distance of the sensor to be tested once in one cycle, and the distance between the sensing part and the sensor to be tested is greater than the limit sensing distance at other times. The distance between the sensing part and the sensor to be tested here refers to the distance between any point on the sensing part and the sensor to be tested.

[0059] Since different sensors have different limit sensing distances, in order to facilitate the movement of the sensor 1 to be tested, the embodiment of the present application further includes a slider 8 and a linear guide 7, wherein the sensor fixing device is arranged on the slider 8, and the slider 8 is slidably connected to the linear guide 7. When it is necessary to adjust the distance between the sensor 1 to be tested and the sensing part 5, the slider 8 can be directly moved on the linear guide 7.

[0060] In addition, for more convenient setting, the embodiment of the present application is further provided with a distance reference device 9, which has a scale, so that when adjusting the sensor 1 to be tested, the distance between the sensor 1 to be tested and the sensing component 5 can be known. No additional measuring device is required for measurement.

[0061] As a preferred implementation of the embodiment of the present application, the embodiment of the present application is further provided with a control system 10, illustratively, such as a PLC. The control system 10 is electrically connected to the servo motor to control the rotation of the servo motor.

[0062] In order to further improve the automation level, the control system 10 is also used to control the movement of the sensor 1. That is, when the limit sensing distance of the sensor 1 is determined, the control system 10 directly controls the slider 8 to move to the corresponding distance on the linear guide rail 7 without manual movement and debugging.

[0063] The sensor detection device provided in the embodiment of the present application includes a sensing part 5, a power device 4, a counter 3 and a sensor fixing device 2 for fixing the sensor 1 to be tested. The power device 4 drives the sensing part 5 to move periodically so that the sensing part 5 periodically appears at the position of the limit sensing distance of the sensor 1 to be tested; when the sensor 1 to be tested senses the sensing part 5, the counter 3 counts. The present application scheme does not need to test the sensor 1 to be tested at the limit sensing distance for many times. It only needs to drive the sensing part 5 to move periodically by the power device 4 so that the sensing part 5 periodically appears at the position of the limit sensing distance of the sensor 1 to be tested, and then compare the number of times the sensing part 5 appears at the position of the limit sensing distance of the sensor 1 to be tested with the count of the counter 3. It can not only measure whether the sensor 1 to be tested can sense the sensing part 5 at the limit sensing distance, but also measure the sensing consistency and reliability of the sensor 1 to be tested at the limit sensing distance. The present application scheme can realize automated testing, save labor costs, and reduce safety and quality risks.

[0064] In order to more clearly illustrate the implementation of the present application, the present application also provides a specific sensor detection device, including a servo motor, a control system 10, a counter 3, a linear guide 7, a slider 8, a distance reference device 9, a sensing part 5, a motor workbench 6, a sensor fixing device 2, etc. The motor shaft of the servo motor is connected to a special sensing part 5, which is composed of a turntable 51 and a boss 52; the sensor 1 to be tested is connected to the power supply and the counter 3 and the control system 10, and the sensor 1 to be tested is fixed on the slider 8 of the linear guide 7 through the sensor fixing device 2. The sensor 1 to be tested is fixedly placed at the extreme sensing position of the boss 52 by the sensor, powered on, the corresponding sensor test program is selected on the control system 10, and the automatic test is started. The number of rotations (A value) / rotation speed of the servo motor is controlled by PLC programming (because some sensors may cause missed detection when sensing multiple sensors in a short time, so different rotation speeds can measure the reliability of the sensor sensing multiple sensors in a short time). The motor shaft of the servo motor drives the sensing part 5 to rotate. When the boss 52 rotates to the front of the sensor, the sensor 1 to be tested will receive the sensing signal, the circuit of the sensor 1 to be tested is closed, the load is connected, and the counter 3 counts once (i.e., the B value). When the boss 52 of the sensing part 5 rotates to the side and top of the sensor 1 to be tested, the sensor 1 to be tested has no signal and the line is disconnected. This process is repeated until the test is completed. The control system 10 automatically compares the A value and the B value to determine whether the signal loss rate and sensitivity characteristics of the sensor 1 to be tested meet the requirements. The platform is also provided with a length scale, which can meet the extreme sensing distance of different sensors by moving the slider 8 on the linear guide 7.

[0065] The equipment test steps and functional logic are as follows:

[0066] 1. The sensing distances of different types of sensors are adjusted to meet the test conditions through the linear guide 7 and the slider 8 mechanism.

[0067] 2. According to the test requirements of the sensor, the control system 10 is used to set and adjust the parameters such as the speed of the servo motor controlled by the PLC system.

[0068] 3. A boss 52 is provided on the sensing part 5, which is adjusted and fixed to the extreme sensing position of the sensor by using the corresponding fixing device and the guide rail, and the sensor is connected to the counter 3; after power is turned on, the servo motor rotates, and when the sensor detects the object to be measured on the servo motor, it will output a signal, and the value of the sensor's counter 3 is +1. After the test is completed, the signal transmission delay of the sensor is determined by comparing the value of the counter 3 with the parameter of the number of motor rotations set by the PLC system, so as to realize the test of the sensitivity, life and reliability of the sensor.

[0069] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0070] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0071] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0072] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0073] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0074] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0075] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limitations on the present application, and a person of ordinary skill in the art may make changes, modifications, substitutions and modifications to the above embodiments within the scope of the present application.

Claims

1. A sensor detection device, characterized in that: It includes a sensing part, a power device, a counter and a sensor fixture for fixing the sensor to be tested; The power device drives the sensing part to move periodically, so that the sensing part appears periodically at the position of the limit sensing distance of the sensor to be tested; When the sensor to be tested senses the sensing part, the counter counts.

2. The sensor detection device according to claim 1, characterized in that: The power device is a servo motor, and the induction part includes a rotating disk and at least one boss; The rotating disk is connected to the motor shaft of the servo motor through the hole at the center of the circle, so that when the servo motor rotates, the rotating disk is driven to rotate; The boss is arranged on the edge of the rotating disk so that the boss rotates along with the rotating disk; When the boss rotates to a preset position, the boss appears at a position of a limit sensing distance of the sensor to be tested.

3. The sensor detection device according to claim 2, characterized in that: Also includes: Motor workbench; The servo motor is arranged on the motor workbench.

4. The sensor detection device according to claim 1, characterized in that: The power device drives the induction part to translate periodically through a transmission device, and the power device is a servo motor or a cylinder.

5. The sensor detection device according to claim 4, characterized in that: The periodic translation includes any one of the following: Move up and down; Move left and right; Move forward and backward.

6. The sensor detection device according to claim 1, characterized in that: The sensor fixing device is arranged on a sliding block, and the sliding block is slidably connected to the linear guide rail.

7. The sensor detection device according to claim 1, characterized in that: Also includes: A distance reference device is provided with a scale so as to know the distance between the sensor to be tested and the sensing part when adjusting the sensor to be tested.

8. The sensor detection device according to claim 1, characterized in that: Also includes: Control systems; The control system is electrically connected to the power device and is used to control the movement of the power device.

9. The sensor detection device according to claim 8, characterized in that: The control system is also used to control the movement of the sensor to be tested.

10. The sensor detection device according to claim 1, characterized in that: The sensor fixing device is a clamp.

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