Sensing and Detection Equipment and Methods

Abstract

This invention provides a sensing detection device and method, belonging to the field of detection technology. It includes a base on which a positioning structure for fixing the product under test is mounted. An adjustment structure is mounted on the base, and one end of the adjustment structure is connected to a pressure sensor. The adjustment structure adjusts the position of the pressure sensor in the horizontal and / or vertical planes. This invention enables automated detection of switching equipment, not only determining whether the product under test is qualified, but also identifying the cause of the defect.

Description

Technical Field

[0001] This invention belongs to the field of testing technology and relates to a sensing and detection device, and more particularly to a sensing and detection method based on the sensing and detection device. Background Technology

[0002] For products that require dialing, testing is necessary before leaving the factory to determine if they are qualified. Currently, this can only be done manually, relying on the sound and vibration produced by the product during dialing to determine its quality. This method is intensive and inefficient; only highly experienced employees can accurately determine product quality, and it is also prone to misjudgment. Furthermore, even if a product is determined to be defective, the cause of the defect cannot be precisely identified. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a sensing and detection device that can determine whether a tested product is qualified and also determine the cause of defective products.

[0004] The objective of this invention can be achieved through the following technical solution: a sensing and detection device, comprising:

[0005] The base has a positioning structure installed on it to fix the product under test.

[0006] An adjustment structure is mounted on a base, and one end of the adjustment structure is connected to a pressure sensor. The adjustment structure is used to adjust the position of the pressure sensor in the horizontal plane and / or the vertical plane.

[0007] In the aforementioned sensing and detection equipment, the positioning structure,

[0008] It includes a positioning cavity for fixing the product under test, and the positioning cavity is disposed on the base and integrally disposed with the base;

[0009] Alternatively, it may include a positioning plate connected to the base, and the positioning plate may have a positioning cavity for fixing the product under test.

[0010] The present invention also provides a sensing detection method based on the aforementioned sensing detection device, comprising the steps of...

[0011] S1, Fix the product under test;

[0012] S2, press the test position of the product being tested to generate a force value curve at different positions;

[0013] S3. Compare the force value curves at different positions with the preset qualified product force value curves to determine whether the current product is a qualified product. Specifically, if all the judgment criteria in the force value curve of the tested product fall within the range of the preset standards, the current tested product is judged to be a qualified product. If at least one judgment criterion in the force value curve of the tested product does not fall within the range of the preset standards, the current tested product is judged to be a defective product.

[0014] In the above-described sensing and detection method, step S3 includes the following steps:

[0015] S31, move the pressure sensor above the detection position of the product being tested;

[0016] S32, lower the pressure sensor to a position 5-10mm away from the detection point of the product being tested;

[0017] S33, the pressure sensor descends at a constant speed to touch the detection position of the product being tested and presses down.

[0018] In the aforementioned sensing and detection method, the preset qualified product force curve includes a rapid rise segment (a), a ball transition segment (b), a plastic toggle segment (c), a bounce segment (d), a bounce completion segment (e), and a final compression segment (f). The preset standards include peak force value, automatic closing point, automatic closing stroke, rebound gap, button height value, and average closing point value. The peak force value is the peak stroke value, located at the inflection point between the plastic toggle segment (c) and the bounce segment (d). The automatic closing point is the stroke point at which the switch bounces down to close, located between the rapid rise segment (a) and the bounce segment (d). The distance between the completed segments (e) on the horizontal axis; the self-closing stroke is the stroke during which the tested product is released from the hand during the closing process, located at the distance on the horizontal axis between the completed segment (e); the rebound gap is the product gap after the switch is fully closed, located at the lateral distance between the perpendicular lines of the end-pressing segment (f) and the end-pressing segment (f) on the horizontal axis; the button height is the height of the button relative to the same reference surface, located at the distance in front of the pressure sensor contacting the reference surface; the average closing point is the average closing point position of the tested product at different detection positions.

[0019] In the aforementioned sensing and detection method, the peak force value is 175g-350g in the preset standard of the force value curve of qualified products; the stroke point of the self-closing point is 2.1mm-4.5mm; the automatic closing stroke is 0.6mm-2.3mm; the rebound gap is 0-0.3mm; and the button height is 0-2.5mm.

[0020] In the above-mentioned sensing and detection method, when the peak force value in the force curve of the tested product is not within the range of the preset peak force value, the reason that the tested product is defective is one or more of the following: the ball is installed backwards, the spring is short, the rocker plate is deformed, or the ball is broken.

[0021] In the above-mentioned sensing and detection method, when the travel point of the self-closing point in the force curve of the tested product is not within the range of the travel point of the preset self-closing point, the reason that the tested product is defective is one or more of the following: the ball is installed backwards or the ball is damaged.

[0022] In the above-mentioned sensing and detection method, when the force value curve of the tested product is in the five-ball transition section (b), the reason that the tested product is defective is that the ball is installed backwards, or the rocker is deformed, or one or more of these reasons.

[0023] In the above-mentioned sensing and detection method, when the force curve of the tested product is S-shaped, the reason why the tested product is defective is that the button is not in position.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] The present invention provides a sensing detection method to realize the automated detection of switching equipment. It can not only determine whether the product under test is a qualified product, but also determine the cause of the defective product. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a sensing and detection device according to the present invention.

[0027] Figure 2 yes Figure 1 Enlarged view of part A in the middle.

[0028] Figure 3 This is a schematic diagram of the positioning structure in a preferred embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of the switch structure in a preferred embodiment of the present invention.

[0030] Figure 5 yes Figure 4 Sectional view AA in the diagram.

[0031] Figure 6 This is a force value curve of a pre-selected qualified product in a preferred embodiment of the present invention.

[0032] Figure 7 This is a force curve of the ball being installed backwards in a preferred embodiment of the present invention.

[0033] Figure 8This is a force curve of the short spring in a preferred embodiment of the present invention.

[0034] Figure 9 This is a force curve of the rocker deformation in a preferred embodiment of the present invention.

[0035] Figure 10 This is a force curve of the bullet breaking in a preferred embodiment of the present invention.

[0036] Figure 11 This is a force curve of a button not being in position in a preferred embodiment of the present invention.

[0037] In the picture,

[0038] 10. Fixing plate; 20. Terminal block; 21. First contact point; 30. Rocker assembly; 31. Rocker; 32. Second contact point; 40. Transition assembly; 41. Transition bracket; 42. Spring; 43. Tumbler; 50. Button;

[0039] 100. Base; 110. Start button; 120. Stop button; 130. Emergency stop button; 200. First adjustment structure; 300. Fixture mounting plate; 400. Positioning structure; 410. Base plate; 420. Support plate; 430. Positioning plate; 431. Positioning cavity; 500. Gantry frame; 600. Second adjustment structure; 700. Cover; 800. Third adjustment structure; 900. Pressure sensor. Detailed Implementation

[0040] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0041] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0042] like Figures 1 to 3 As shown, the present invention provides a sensing and detection device for detecting switching devices, comprising:

[0043] The base 100 has a first adjustment structure 200 installed on it.

[0044] A fixture mounting plate 300 is mounted on the first adjustment structure 200, wherein a positioning structure 400 for fixing the product under test is connected to the fixture mounting plate 300.

[0045] The gantry frame 500 is mounted on the base 100, and a second adjustment structure 600 is mounted on the gantry frame 500.

[0046] A cover 700 is mounted on the second adjustment structure 600. A third adjustment structure 800 is installed inside the cover 700, and a pressure sensor 900 is connected to one end of the third adjustment structure 800.

[0047] It is worth mentioning that the first adjustment structure 200, the second adjustment structure 600, and the third adjustment structure 800 constitute an adjustment structure. These three structures respectively enable the pressure sensor 900 to move in the X-axis, Y-axis, and Z-axis directions, i.e., to adjust the position of the pressure sensor 900 in the horizontal and / or vertical planes. However, the connection methods of the first adjustment structure 200, the second adjustment structure 600, and the third adjustment structure 800 are not limited to those described above; any method that enables the position adjustment of the pressure sensor 900 in the horizontal and / or vertical planes is acceptable. Furthermore, the adjustment structure may not even be mounted on the base 100, and the base 100 may only have a positioning structure 400 for fixing the product under test. The adjustment structure could be a robotic arm, with the pressure sensor 900 mounted on it, allowing the robotic arm to adjust the position of the pressure sensor 900 in the horizontal and / or vertical planes.

[0048] Preferably, the positioning structure 400 includes a positioning cavity 431 for nesting and cooperating with the product under test and fixing the product under test during testing. The positioning cavity 431 can be directly set on the base 100 and integrally formed with the base 100, or the positioning cavity 431 can be set on the positioning plate by connecting the positioning plate 430 to the base 100.

[0049] It is worth noting that there is a difference between directly setting the positioning cavity 431 on the base 100 and setting the positioning cavity 431 on the positioning plate 430 connected to the base 100. The difference lies in the fact that if the positioning cavity 431 is directly set on the base 100 and integrated with the base 100, the entire sensing and detection device can be simplified. However, if the positioning cavity 431 is set on the positioning plate 430 and the positioning plate 430 is installed on the base 100, then when the size or shape of the product being measured changes, only the positioning plate 430 needs to be replaced, without replacing the base 100, thus achieving operational convenience.

[0050] In addition, by setting the positioning cavity 431, the "embedded" fit between the positioning plate 430 and the product under test is completed, thereby limiting the degree of freedom of the product under test in the horizontal plane, and thus preventing the product under test from shaking when pressed by the pressure sensor 900.

[0051] More preferably, the positioning structure 400 further includes a base plate 410, which is mounted on the fixture mounting plate 300; and a support plate 420, one end of which is mounted on the base plate 410, wherein the positioning plate 430 is connected to the other end of the support plate 420.

[0052] It is worth mentioning that the positioning structure 400 is formed by the base plate 410, the support plate 420 and the positioning plate 430, so that a hollow space is formed in the middle of the entire positioning structure 400, and the positioning cavity 431 passes through the positioning plate 430 and is connected to the hollow space of the positioning structure 400, so that the product under test placed in the positioning cavity 431 can directly access the hollow space.

[0053] More preferably, the base 100 is provided with a test start button 110, a stop button 120 and an emergency stop button 130.

[0054] It is worth mentioning that if the adjustment structure is connected to the base 100, the test start button 110, stop button 120 and emergency stop button 130 can be set on the base 100 simultaneously. If the adjustment structure is not connected to the base 100, but is only located on one side of the base 100, the adjustment structure can be a robotic arm. In this case, the test start button 110, stop button 120 and emergency stop button 130 can be set on the robotic arm, that is, on the adjustment structure.

[0055] It is worth mentioning that, such as Figure 4 , Figure 5 As shown, the product under test is a switch, which includes:

[0056] A fixing plate 10 is provided, and oppositely arranged wiring terminals 20 are installed in the fixing plate 10, wherein each wiring terminal 20 is provided with a first contact point 21;

[0057] The rocker assembly 30 is located between two terminals 20. The rocker assembly 30 includes a rocker 31, and each end of the rocker 31 is provided with a second contact point 32 that contacts and engages with the first contact point 21.

[0058] The transition assembly 40, located above the rocker assembly 30, includes a transition bracket 41, and a spring 42 and a ball 43 nested with the spring 42 are installed in the transition bracket 41, wherein the ball 43 can slide on the surface of the rocker 31.

[0059] The button 50 is connected to the transition component 40. By pressing the button 50, the pin 43 slides on the surface of the rocker 31, realizing the contact and separation of the first contact point 21 and the second contact point 32.

[0060] The present invention also provides a sensing detection method using the above-mentioned sensing detection device, comprising:

[0061] Step S1: Secure the product under test to prevent it from moving during the testing process;

[0062] Step S2: Mark the detection positions of the product being tested, and divide the detection positions and the number of tests according to the size and specifications of the product being tested;

[0063] Step S3: Press the detection position of the product being tested in step S2 to generate force value curves at different positions;

[0064] Step S4: Compare the force value curves at different positions with the preset qualified product force value curves to determine whether the current product is a qualified product. Specifically, if all the judgment criteria in the force value curve of the tested product fall within the range of the preset standards, the current tested product is judged to be a qualified product. If at least one judgment criterion in the force value curve of the tested product does not fall within the range of the preset standards, the current tested product is judged to be a defective product.

[0065] The present invention provides a sensing detection method to realize the automated detection of switching equipment. It can not only determine whether the product under test is a qualified product, but also determine the cause of the defective product.

[0066] It is worth mentioning that the sensor detection equipment is pre-set with force value curves for qualified products and force value curves for defective products. Among them, the force value curves for defective products include force value curves for the reversed installation of the ball 43, the short spring 42, the deformed rocker 31, the damaged head of the ball 43, the improperly assembled button 50, and so on.

[0067] like Figure 4 Taking the switch shown as an example, firstly, eight detection positions are marked on the surface of button 50 (the contact surface of pressure sensor 900), labeled as 1, 2, 3, 4, 5, 6, 7, and 8 respectively. Then, the pressure sensor 900 is used to press the corresponding detection positions, thereby forming an eight-tension value curve. The eight tension value curves are then fitted to form a single force value curve. This tension value curve is then fitted and judged against the force value curve of a preset qualified product. If it is similar to or consistent with the force value curve of the preset qualified product, then the current tested product is judged to be a qualified product; if it is inconsistent with the force value curve of the preset qualified product, then the current tested product is judged to be a non-qualified product.

[0068] When the product being tested is a defective product, its force curve needs to be fitted with the force curve of the defective product, and the force curve of the defective product that is similar to the force curve of the product being tested can be found. This will help determine the cause of the defect in the product being tested.

[0069] It is worth mentioning that, such as Figure 6 As shown, the preset qualified product force value curve includes a rapid rise segment (a), a transition segment of the ball 43 (b), a plastic actuation segment (c), a bounce segment (d), a bounce completion segment (e), and a final compression segment (f). Among them, the rapid rise segment (a) mainly represents the stage where the spring 42 inside the tested product is overcome, and the spring 42 is rapidly compressed and deformed; the ball 43 transition segment (b) is the stage where the spring 42 is compressed to the middle stage, and the spring 42 deforms slowly, while the ball 43 slides in the middle stage of the rocker 31; the plastic actuation segment (c) is when the plastic actuation piece is against the rocker 31, applying additional push to make the rocker 31 bounce up; the bounce segment (d) is the stage where the rocker 31 starts to bounce and falls rapidly, and the spring 42 releases its elasticity; the bounce completion segment (e) is the stage where there is no tactile sensation, and the rocker 31 falls at a speed exceeding the speed at which the pressure sensor 900 presses down, with no contact between the pressure sensor 900 and the product; the final compression segment (f) is when the pressure sensor 900 contacts the product again and reaches the maximum compression amount.

[0070] Furthermore, the criteria for judging the force curve of the preset qualified product include peak force value, automatic closing point, automatic closing stroke, rebound gap, button 50 height value, and average closing point value. Among them, the peak force value is the peak stroke value, located at the inflection point between the plastic toggle segment (c) and the bounce segment (d); the self-closing point is the stroke point of the switch bounce-down, located on the horizontal axis between the rapid rise segment (a) and the bounce completion segment (e); the self-closing stroke is the stroke of the non-sensitive part, the stroke of the tested product detaching from the hand during the closing process, located on the horizontal axis between the bounce completion segment (e); the rebound gap is the product gap after the switch is fully closed, located on the horizontal axis between the vertical lines of the end-press segment (f) and the end-press segment (f); the button 50 height value is the height value of button 50 relative to the same reference surface, located at the distance before the pressure sensor 900 contacts the reference surface; the average closing point value is the average closing point position of the tested product at different detection positions.

[0071] like Figure 7 As shown, when the peak force value in the force curve of the tested product is less than the preset peak force value, the rapid rise segment (a) directly reaches the plastic actuation segment (c), without the transition segment (b) of the ball 43, and the descent slope of the bouncing segment (d) is stepped. The reason why the tested product is defective may be due to the ball 43 being installed backwards.

[0072] like Figure 8 As shown, when the peak force value in the force curve of the tested product is less than the preset peak force value, and the direction of the force curve is close to that of the force curve of the qualified product, the reason for the defective product in the current test may be that the spring 42 is short.

[0073] like Figure 9As shown, when the peak force value in the force curve of the tested product is less than the preset peak force value, the rapid rise segment (a) directly reaches the plastic actuation segment (c), without the transition segment (b) of the ball 43, and the downward slope of the bouncing segment (d) is in the form of a broken line. The reason why the tested product is defective may be caused by the deformation of the rocker 31.

[0074] like Figure 10 As shown, when the peak force value in the force curve of the tested product is much higher than the preset peak force value, the force curve declines directly after passing through the transition section (b) without the ball. The reason for the defective product in the current test product may be the breakage of the ball.

[0075] like Figure 11 As shown, when the force curve of the tested product is S-shaped, the reason for the defective product may be that the button 50 is not in place.

[0076] More preferably, step S3 includes:

[0077] Step S31: Move the pressure sensor 900 above the detection position of the product being tested;

[0078] Step S32: Lower the pressure sensor 900 to a position 5-10 mm away from the detection position of the product being tested;

[0079] Step S33: The pressure sensor 900 is lowered at a constant speed to touch the detection position of the product being tested and press down.

[0080] It is worth mentioning that step S3 is a preprocessing step when the pressure sensor 900 touches the surface of the button 50. On the one hand, the position of the pressure sensor 900 is adjusted, and on the other hand, the speed of the pressure sensor 900 when pressing the surface of the button 50 is adjusted.

[0081] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0082] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0083] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A sensing detection method for a dial switch, based on a sensing detection device, characterized in that, The sensing and detection equipment includes: A base (100) on which a positioning structure (400) for fixing the product under test is installed. An adjustment structure is mounted on a base (100), and one end of the adjustment structure is connected to a pressure sensor (900), wherein the pressure sensor (900) is adjusted in the horizontal plane and / or vertical plane by means of the adjustment structure; The sensing detection method includes the following steps: S1, Fix the product under test; S2, press the test position of the product being tested to generate a force value curve at different positions; S3. By comparing the force value curves at different locations with the preset force value curves of qualified products, it is determined whether the current product is qualified. Specifically, if all the judgment criteria in the force value curve of the tested product fall within the range of the preset standards, the current tested product is judged to be qualified. If at least one judgment criterion in the force value curve of the tested product does not fall within the range of the preset standards, the current tested product is judged to be defective. If the current tested product is unqualified, its force value curve needs to be fitted with the force value curve of the defective product, and a force value curve of the defective product that is similar to the force value curve of the current tested product needs to be found. This will help determine the cause of the current tested product being defective. The preset qualified product force curve includes a rapid rise section (a), a ball transition section (b), a plastic actuation section (c), a bounce section (d), a bounce completion section (e), and a final compression section (f). The preset standards include peak force, automatic closing point, automatic closing stroke, rebound gap, button height, and average closing point value. The peak force value is the peak stroke value, located at the inflection point between the plastic actuation section (c) and the bounce section (d). The automatic closing point is the stroke point where the switch bounces down to close, located between the rapid rise section (a) and the bounce completion section (e). The distance on the horizontal axis; the self-closing stroke is the stroke when the test product is released from the hand during the closing process, located at the distance on the horizontal axis of the bounce completion segment (e); the rebound gap is the product gap after the switch is fully closed, located at the lateral distance between the perpendicular lines of the end-pressing segment (f) and the end-pressing segment (f) on the horizontal axis; the button height is the height of the button relative to the same reference surface, located at the distance before the pressure sensor (900) contacts the reference surface; the average closing point is the average closing point position of the test product at different detection positions.

2. The sensing and detection method for the dial switch according to claim 1, characterized in that, The positioning structure (400) includes a positioning cavity (431) for fixing the product under test, and the positioning cavity (431) is disposed on the base (100) and is integrally disposed with the base (100); Alternatively, it may include a positioning plate (430) connected to the base (100), and a positioning cavity (431) for fixing the product under test is provided on the positioning plate (430).

3. The sensing and detection method for the dial switch according to claim 1, characterized in that, Step S3 includes the following steps S31, move the pressure sensor (900) above the detection position of the product being tested; S32, lower the pressure sensor (900) to a position 5-10mm away from the detection position of the product being tested; S33, the pressure sensor (900) is lowered at a constant speed to touch the detection position of the product being tested and press down.

4. The sensing and detection method for the dial switch according to claim 1, characterized in that, In the preset standards of the force value curve of qualified products, the peak force value is 175g-350g; the stroke point of the self-closing point is 2.1mm-4.5mm; the automatic closing stroke is 0.6mm-2.3mm; the rebound gap is 0-0.3mm; and the button height is 0-2.5mm.

5. The sensing and detection method for the dial switch according to claim 1, characterized in that, When the peak force value in the force curve of the tested product is not within the range of the preset peak force value, the reason that the tested product is defective is one or more of the following: the ball is installed backwards, the spring is short, the rocker plate is deformed, or the ball is broken.

6. The sensing and detection method for the dial switch according to claim 1, characterized in that, When the travel point of the self-closing point in the force curve of the tested product is not within the range of the travel point of the preset self-closing point, the reason that the tested product is defective is one or more of the following: the ball is installed backwards or the ball is damaged.

7. The sensing and detection method for the dial switch according to claim 1, characterized in that, When the force curve of the tested product is in the five-ball transition section (b), the reason why the tested product is a defective product is that the ball is installed backwards, or the rocker is deformed, or one or more of these reasons.

8. The sensing and detection method for the dial switch according to claim 1, characterized in that, When the force curve of the tested product is S-shaped, the reason why the tested product is defective is that the button is not in position.

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