Surface resistance detection device

Abstract

The utility model discloses a surface resistance detection device, which is provided with a test meter pen capable of moving up and down, so that the strength and the angle of a detection probe of the test meter pen are consistent when the detection probe abuts against the surface of a sample to be detected each time, and the measurement deviation caused by non-standard and non-uniform actions due to human factors in the detection process is reduced. And the detection stability and precision are improved. The semi-automatic detection process can also greatly avoid the problems that the detection probe is damaged due to collision and falling, the electrode connecting line is damaged due to dragging and the like, and the service life of the detection probe and the electrode connecting line is prolonged. In addition, by arranging the bearing table with the limiting groove, the detection path of the to-be-detected sample can be limited, detection personnel can conveniently move the to-be-detected sample, and the operation convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of resistance detection equipment, in particular to a surface resistance detection device. Background Art

[0002] At present, a surface resistance meter is usually used to detect the surface resistance of the sample to be tested. The surface resistance meter generally includes a controller and a test probe connected to it through an electrode connection line. During the test, the tester needs to hold the sample to be tested in one hand and flatten it, and hold the test probe in the other hand, press the test probe of the test probe vertically on the sample to be tested for testing, and transmit the test data to the controller, which displays the stabilized resistance data. At the same time, in order to ensure the accuracy of the test data, it is necessary to move the sample to be tested, change the test position, and repeat the above steps to test the surface of the sample to be tested multiple times, and record the test results.

[0003] However, during the inspection process according to the above steps, since the flattening and movement of the sample to be tested are controlled by the inspector with one hand, the operation is inconvenient and the inspection efficiency is low; and when the inspector is operating, it is difficult to ensure that the force and angle of vertically pressing the detection probe are completely consistent each time, resulting in uneven force on the detection probe of the test probe and the surface of the sample to be tested, which in turn causes unstable test data and ultimately affects the inspection accuracy and efficiency; in addition, the instability of the inspector's operation will also cause the detection probe to collide and fall and be damaged, and the electrode connecting line to be damaged by pulling, thereby affecting the service life of the detection probe and the electrode connecting line of the test probe. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a surface resistance detection device, which can reduce the measurement deviation caused by human factors during the detection process and improve the detection stability and accuracy.

[0005] The technical solution of the utility model to solve the above problems is as follows:

[0006] A surface resistance detection device comprises a carrying platform for carrying the sample to be tested, wherein the carrying platform is provided with a limit groove for limiting the detection path of the sample to be tested; and further comprises a test probe located directly above the limit groove and movable up and down for detecting the surface resistance of the sample to be tested, wherein a detection probe is provided at one end of the test probe facing the limit groove.

[0007] The utility model provides a test probe that can move up and down, so that the force and angle of the test probe's pressing on the sample to be tested are consistent each time, thereby improving the force uniformity between the test probe and the sample to be tested, reducing the measurement deviation caused by human factors during the detection process, making the detection more standardized and unified, and improving the stability and accuracy of the detection. In addition, the setting of the limit groove can make the sample to be tested slide in the limit groove, limit the detection path of the sample to be tested, facilitate the detection personnel to move the sample to be tested, and improve the convenience of operation.

[0008] Preferably, the surface resistance detection device further comprises a control mechanism for controlling the up and down displacement of the test probe.

[0009] Preferably, the control mechanism includes a support rod arranged on one side of the limiting groove, a first parallel clamp fixed on the support rod, and a cylinder vertically fixed on the first parallel clamp.

[0010] Preferably, the test probe is linked to the piston end of the cylinder through a second parallel clamp, so that the test probe can be moved up and down by the telescopic movement of the piston end of the cylinder. The piston end of the cylinder can face the surface of the bearing platform or face away from the surface of the bearing platform. For ease of installation and use, it is preferred that the piston end of the cylinder faces the surface of the bearing platform.

[0011] Preferably, the piston end of the cylinder faces the surface of the support platform, and the detection probe vertically abuts or leaves the surface of the sample to be tested as the piston end moves in a telescopic manner. Specifically, when the piston end of the cylinder extends to the end of the stroke, the detection probe vertically abuts the surface of the sample to be tested, and when the piston end of the cylinder contracts, the detection probe leaves the surface of the sample to be tested.

[0012] In addition, when the piston end of the cylinder faces away from the surface of the support platform, the detection probe can also vertically abut or leave the surface of the sample to be tested as the piston end moves in a telescopic manner. Specifically, when the piston end of the cylinder contracts to the end of the stroke, the detection probe of the test probe vertically abuts against the surface of the sample to be tested, and when the piston end of the cylinder extends, the detection probe leaves the surface of the sample to be tested. In this state, when the surface resistance detection device is in the initial state, the test probe needs to be moved upward before the sample to be tested can be placed, which will cause operational inconvenience and is therefore not preferred.

[0013] In summary, the control mechanism uses the telescopic movement of the piston end of the cylinder to control the up and down displacement of the test lead, so that the detection probe of the test lead can vertically abut or leave the surface of the sample to be tested. This semi-automatic control method can reduce the measurement deviation caused by human factors during the detection process, so that the force and angle of the detection probe when it abuts against the surface of the sample to be tested are consistent each time, thereby improving the stability and accuracy of the detection. Specifically, the piston end of the cylinder faces the surface of the support platform. When the piston end of the cylinder is extended, the test lead is displaced downward. When the piston end of the cylinder is extended to the end of the stroke, the detection probe of the test lead can vertically abut the surface of the sample to be tested; when the piston end of the cylinder is contracted, the test lead is displaced upward, and the detection probe leaves the surface of the sample to be tested.

[0014] Preferably, the surface resistance detection device further comprises a controller which is in communication connection with the test probe and is used for displaying the detection data of the surface resistance. The communication connection may be connected by an electrode connection line, for example.

[0015] Preferably, the controller is fixed to the support platform at an angle of (35-55)° to facilitate observation by inspection personnel.

[0016] Preferably, the control mechanism also includes a control unit for controlling the inlet and outlet of compressed air.

[0017] Preferably, the control unit is a pneumatic foot valve connected to the cylinder via an air inlet pipe and an air outlet pipe, and the inlet and outlet of compressed air are controlled by switching the pneumatic foot valve to control the extension and retraction of the piston end of the cylinder.

[0018] Preferably, the surface resistance of the carrier is greater than 9.9e10Ω. Setting the surface resistance of the carrier to be greater than 9.9e10Ω can avoid the detection result being displayed as the surface resistance of the carrier, thereby avoiding detection errors.

[0019] The utility model has the following beneficial effects:

[0020] The surface resistance detection device of the utility model is provided with a test probe that can be moved up and down, so that the force and angle of the detection probe of the test probe are consistent each time when it contacts the surface of the sample to be tested, thereby reducing the measurement deviation caused by irregular and inconsistent movements due to human factors during the detection process, and improving the stability and accuracy of the detection. The semi-automatic detection process can also greatly avoid the problems of the detection probe being damaged by collision and falling, and the electrode connection line being damaged by pulling, thereby extending the service life of the detection probe and the electrode connection line. In addition, a limit groove is provided on the support table to limit the detection path of the sample to be tested, which is convenient for the detection personnel to move the sample to be tested and improves the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a schematic diagram of the structure of a surface resistance detection device according to an embodiment of the present application;

[0022] Figure 2 This is a front view of a surface resistance detection device according to an embodiment of the present application;

[0023] In the figure: 1-carrying platform, 11-limiting groove, 21-test pen, 211-detection probe, 22-controller, 23-electrode connecting wire, 31-support rod, 32-first parallel clamp, 33-second parallel clamp, 34-cylinder, 341-piston end, 35-pneumatic foot valve, 36-inlet pipe, 37-outlet pipe, 38-pneumatic throttle valve. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the drawings and specific embodiments of the specification. A person of ordinary skill in the art will be able to implement the utility model based on these descriptions. In addition, the embodiments of the utility model involved in the following description are usually only embodiments of a part of the utility model, rather than all of the embodiments. Therefore, based on the embodiments in the utility model, all other embodiments obtained by a person of ordinary skill in the art without making creative work should fall within the scope of protection of the utility model.

[0025] A surface resistance detection device can be used to detect the surface resistance of a slender strip, such as Figure 1 As shown, the device includes a horizontally arranged carrying platform 1 capable of carrying a sample to be tested, and also includes a test probe 21 for realizing surface resistance detection of the sample to be tested.

[0026] A limiting groove 11 is provided on the upper surface of the carrier 1 to limit the detection path of the sample to be tested, so that the sample to be tested can slide in the limiting groove 11, so that the test personnel can control the sample to be tested to move to a specific detection position with one hand, thereby improving the convenience of operation and the detection efficiency. Therefore, it is necessary to set the size of the limiting groove 11 according to the size of the sample to be tested, and at the same time, the surface resistance value of the carrier 1 is greater than that of the sample to be tested, so as to avoid the detection result being displayed as the surface resistance value of the carrier 1. In this embodiment, the surface resistance value of the carrier 1 is set to >9.9e10Ω to ensure that the detection result shows the surface resistance value of the sample to be tested, so as to avoid detection errors.

[0027] A test probe 21 for detecting the surface resistance of the sample to be tested is arranged directly above the limit slot 11 of the carrier 1 and can be moved up and down. A detection probe 211 is arranged at one end of the test probe 21 facing the limit slot 11. The test probe 21 is connected to the controller 22 through an electrode connection line 23. During the test, the detection probe 211 of the test probe 21 is vertically abutted against the sample to be tested, and the signal is transmitted to the controller 22 to complete the test and display the test data. The controller 22 is fixedly placed on the carrier 1. In this embodiment, the controller 22 is fixed at a 45° angle to the carrier 11 to facilitate the inspection personnel to observe and read the test data.

[0028] The test probe 21 is displaced up and down by a control mechanism, which includes a support rod 31 vertically arranged on one side of the limit groove, a first parallel clamp 32 fixed on the support rod 31, and a cylinder 34 vertically fixed on the first parallel clamp 32, wherein the piston end 341 of the cylinder 34 faces the surface of the support platform 1.

[0029] The test probe 21 is also vertically arranged, and its end away from the detection probe 211 is linked to the piston end 341 of the cylinder 34 through the second parallel clamp 33, so that the test probe 21 can be moved up and down by the telescopic movement of the piston end 341 of the cylinder 34. The detection probe 211 of the test probe 21 is vertically facing the surface of the support platform 1, and the detection probe 211 vertically abuts or leaves the surface of the sample to be tested as the piston end 341 moves. When the piston end 341 of the cylinder 34 extends to the end of the stroke, the detection probe 211 of the test probe 21 can vertically abut the surface of the sample to be tested. In order to improve the firmness of the fixation of the piston end 341 and the test probe 21, the second parallel clamp 33 can be set to multiple, and is set to two in the present embodiment.

[0030] The control mechanism also includes a control unit, which controls the expansion and contraction of the piston end 341 of the cylinder 34 by controlling the inlet and outlet of compressed air, thereby controlling the up and down displacement of the test probe 21. In this embodiment, for easy operation, the control unit is set as a pneumatic foot valve 35, which is connected to the air inlet and outlet of the cylinder 34 through an air inlet pipe 36, an air outlet pipe 37 and a pneumatic throttle valve 38. The inlet and outlet of compressed air in the cylinder 34 can be controlled by switching the pneumatic foot valve 35, thereby controlling the expansion and contraction of the piston end 341 of the cylinder 34. When the piston end 341 of the cylinder 34 is extended, the test probe 21 is displaced downward, and when the piston end 341 of the cylinder 34 is contracted, the test probe 21 is displaced upward.

[0031] The use process of the surface resistance detection device disclosed in this embodiment is as follows: the sample to be tested is flattened and placed in the limit groove 11 of the support platform 1. The tester steps on the pneumatic foot valve 35 to extend the piston end 341 of the cylinder 34, driving the test pen 21 to move downward. When the piston end 341 of the cylinder 34 extends to the end of the stroke, the detection probe 211 of the test pen 21 vertically contacts the surface of the sample to be tested, and the signal is transmitted to the controller 22 to complete the detection, display the detection data and record it. The pneumatic foot valve 35 is released to shrink the piston end 341 of the cylinder 34, and the test pen 21 moves upward. The detection probe 211 of the test pen 21 leaves the surface of the sample to be tested, and a test is completed at this time. Then drag the sample to be tested to slide in the limit groove 11, repeat the above steps again, record the surface resistance data at different positions, and complete the surface resistance detection of the sample to be tested.

Claims

1. A surface resistance detection device, characterized in that: The invention comprises a carrying platform (1) for carrying a sample to be tested, wherein the carrying platform (1) is provided with a limit groove (11) for limiting the detection path of the sample to be tested; and further comprises a test probe (21) located directly above the limit groove (11) and capable of moving up and down and used for detecting the surface resistance of the sample to be tested, wherein a detection probe (211) is provided at one end of the test probe (21) facing the limit groove (11).

2. A surface resistance detection device according to claim 1, characterized in that: It also includes a control mechanism for controlling the upward and downward displacement of the test probe (21).

3. A surface resistance detection device according to claim 2, characterized in that: The control mechanism comprises a support rod (31) arranged on one side of the limiting groove (11), a first parallel clamp (32) fixed on the support rod (31), and a cylinder (34) vertically fixed on the first parallel clamp (32).

4. A surface resistance detection device according to claim 3, characterized in that: The test probe (21) is linked to the piston end (341) of the cylinder (34) via a second parallel clamp (33).

5. A surface resistance detection device according to claim 4, characterized in that: The piston end (341) faces the surface of the support platform (1), and the detection probe (211) vertically abuts against or leaves the surface of the sample to be tested as the piston end (341) moves in a telescopic manner.

6. A surface resistance detection device according to claim 1, characterized in that: It also includes a controller (22) that is communicatively connected to the test probe (21).

7. A surface resistance detection device according to claim 6, characterized in that: The controller (22) and the supporting platform (1) are fixed at an angle of (35-55)°.

8. A surface resistance detection device according to claim 3, characterized in that: The control mechanism also includes a control unit for controlling the inlet and outlet of compressed air.

9. A surface resistance detection device according to claim 8, characterized in that: The control unit is a pneumatic foot valve (35) connected to the cylinder (34) via an air inlet pipe (36) and an air outlet pipe (37).

10. A surface resistance detection device according to claim 1, characterized in that: The surface resistance of the support platform (1) is greater than 9.9e10Ω.

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