Digital probe detection device

Abstract

The utility model provides a digital probe detection device. The digital probe detection device comprises a base and a lifting rod arranged on the base, the lifting rod is sleeved with an adjusting block, and the adjusting block is fixed to the lifting rod through a first locking device. The extension arm is arranged on the adjusting block, a detection rod is arranged on the extension arm in a penetrating mode, and the detection rod is fixed to the extension arm through a second locking device; the detection head is arranged on the detection rod, a plurality of probes are arranged on the detection head, and a ray receiving end is arranged at the position adjacent to the probes; the ray emitting end is arranged on the base and is arranged below the adjacent probe; according to the digital probe detection device, the actual thickness of the carbon paper can be obtained after measurement, and the result is more accurate after correction.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a digital probe detection device. Background Art

[0002] Carbon paper serves as a gas diffusion layer in fuel cells, performing important functions such as mass transfer, electrical conductivity, heat transfer, and supporting the catalytic layer. It is an indispensable material for hydrogen fuel cells and is widely used in proton exchange membrane fuel cells.

[0003] When selecting carbon paper, it is necessary to test the plane resistivity of the carbon paper to determine whether the selected carbon paper meets the usage requirements. In the existing technology, a probe tester is used to test the carbon paper, but the test results need to be corrected after the test. During the correction, the thickness of the carbon paper needs to be measured. However, the measured thickness is the average thickness of the carbon paper as a whole, not the thickness of the test point of the probe tester, which causes the problem of inaccurate results after correction. Utility Model Content

[0004] The purpose of this utility model is to provide a digital probe detection device, which can solve the above technical problems;

[0005] The utility model provides a digital probe detection device, comprising:

[0006] A base and a lifting rod arranged on the base;

[0007] An adjusting block is sleeved on the lifting rod, and the adjusting block is fixed to the lifting rod through a first locking device;

[0008] The extension arm is provided on the adjustment block, and a detection rod is passed through the extension arm, and the detection rod is fixed to the extension arm through a second locking device;

[0009] A detection head is arranged on the detection rod, and a plurality of probes are arranged on the detection head, and ray receiving ends are arranged at positions adjacent to the probes;

[0010] The ray emitting end is arranged on the base and placed below the adjacent probe.

[0011] As a further technical solution, it also includes:

[0012] The limiting ring is sleeved on the lifting rod and is fixed to the lifting rod through a third locking device.

[0013] As a further technical solution, the extension arm performs linear motion on the adjustment block.

[0014] As a further technical solution, the extension arm is arranged on the adjustment plate, the adjustment block is provided with an adjustment slot, and the adjustment plate is arranged in the adjustment slot.

[0015] As a further technical solution, it also includes:

[0016] The adjusting knob is arranged on the adjusting block and contacts the portion of the adjusting plate placed in the adjusting slot.

[0017] Preferably, the number of probes is four.

[0018] As a further technical solution, the four probes include a first needle, a second needle, a third needle and a fourth needle which are arranged in sequence.

[0019] As a further technical solution, the ray receiving end is arranged adjacent to the second needle and the third needle.

[0020] As a further technical solution, the ray emitting end is arranged below the second needle and the third needle.

[0021] As a further technical solution, a first opening and a second opening are formed opposite to each other at one end of the detection rod adjacent to the detection head.

[0022] The technical solution of the present invention is to arrange a lifting rod on the base, and arrange the detection rod and the detection head on the extension arm through the cooperation of the adjustment block and the extension arm. During the use phase, the position of the detection rod and the detection head can be adjusted through the cooperation of the adjustment block and the extension arm. When measuring carbon paper, the carbon paper is measured by the simultaneous cooperation of the probe, the ray emitting end and the ray receiving end on the detection head. Compared with the existing technology, the technical solution of the present invention can obtain the actual thickness of the carbon paper after measurement, and the result is more accurate after correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a structural diagram of a digital probe testing device of the present invention;

[0025] Figure 2 for Figure 1 Side view of;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure of part A;

[0027] Figure 4 This is a three-dimensional diagram of a digital probe testing device of the present invention from one angle;

[0028] Figure 5 This is a three-dimensional diagram of a digital probe testing device of the present invention from another angle;

[0029] Figure 6 This is a structural block diagram of the detection head in the utility model;

[0030] Figure 7 This is a circuit block diagram of the utility model.

[0031] Description of reference numerals:

[0032] 1-base; 2-lifting rod; 31-adjustment block; 32-adjustment knob; 41-extension arm; 42-adjustment plate; 5-detection rod; 6-detection head; 7-probe; 71-first needle; 72-second needle; 73-third needle; 74-fourth needle; 81-first locking device; 82-second locking device; 83-third locking device; 91-ray receiving end; 911-preamplifier; 912-signal detector; 92-ray emitting end; 921-low-energy X-ray tube; 922-high-voltage Source; 10-limiting ring; 11-first opening; 12-second opening; 101-circuit board; 102-power supply; 103-DC / DC converter; 104-constant current source; 105-current adjustment self-calibration circuit; 106-high-sensitivity DC amplifier; 107-dual-integral A / D converter; 108-counter; 109-display screen; 110-A / D converter; 111-PWM pulse; 112-motor driver; 113-stepping motor; 114-D / A converter. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0036] like Figure 1-7 As shown, the present invention proposes a digital probe detection device, comprising:

[0037] The base 1 and the lifting rod 2 arranged on the base 1; during the use stage, the carbon paper needs to be placed on the base 1, so it is necessary to ensure that the setting position of the lifting rod 2 does not affect the placement of the carbon paper; the lifting rod 2 is provided with an adjustment block 31, and the adjustment block 31 is fixed to the lifting rod 2 by a first locking device 81; the position of the adjustment block 31 on the lifting rod 2 can be changed according to actual use needs, and after the position is adjusted, the adjustment block 31 is locked on the lifting rod 2 by the first locking device 81; the extension arm 41 is provided on the adjustment block 31, and a detection rod 5 is passed through the extension arm 41, and the detection rod 5 is fixed to the extension arm 41 by a second locking device 82; before use, the detection rod 5 can be fixed to the extension arm 41. The measuring rod 5 is passed through the extension arm 41. After adjusting the position of the measuring rod 5 on the extension arm 41, the measuring rod 5 is fixed to the extension arm 41 by the second locking device 82. The detection head 6 is provided on the detection rod 5, and a plurality of probes 7 are provided on the detection head 6, and a ray receiving end 91 is provided at the position of the adjacent probes 7. The ray emitting end 92 is provided on the base 1 and is placed below the adjacent probes 7. In the present utility model, the first locking device 81 and the second locking device 82 are preferably bolts. Through holes are provided on the adjustment block 31 and the extension arm 41. The first locking device 81 and the second locking device 82 respectively pass through the through holes and contact the lifting rod 2 and the measuring rod 5.

[0038] During the use phase, the carbon paper is placed on the base 1, and the positions of the adjustment block 31 and the detection rod 5 are adjusted respectively; after the adjustment is completed, the ray emitting end 92 is started; X-rays are emitted by the ray emitting end 92, and contact with the carbon paper through the probe 7, and the thickness of the carbon paper is detected by the probe 7. After the X-rays are irradiated on the carbon paper, part of the X-rays are absorbed by the carbon paper, and the remaining part of the X-rays penetrates the carbon paper and is received by the ray receiving end 91, and the received X-rays are processed and converted into digital quantities; corrections are made based on the acquired data, and finally the actual thickness of the carbon paper is obtained.

[0039] like Figure 4 Or as shown in 5, it also includes a limit ring 10, which is sleeved on the lifting rod 2, and the limit ring 10 is fixed to the lifting rod 2 by a third locking device 83; the position of the limit ring 10 on the lifting rod 2 is adjusted as needed. When the position of the limit ring 10 is adjusted, the limit ring 10 is locked on the lifting column by the third locking device 83. In the actual use stage, the limit ring 10 limits the position of the lower limit of the adjustment block 31 to avoid excessive movement of the adjustment block 31, which causes damage to the detection head 6 after the detection rod 5 contacts the base 1; in the utility model, the preferred third locking device 83 is a bolt; a through hole is opened on the limit ring 10, and the third locking device 83 passes through the through hole and contacts the lifting rod 2.

[0040] In addition, in the present invention, the extension arm 41 performs linear motion on the adjustment block 31, thereby driving the detection rod 5 to change its position, thereby adjusting the position of the detection head 6; specifically, the extension arm 41 is provided on the adjustment plate 42, the adjustment block 31 is provided with an adjustment slot, and the adjustment plate 42 is provided in the adjustment slot; Figure 4 As shown in or 5, a slider is provided on the adjustment plate 42, which is adapted to the adjustment slot. When adjusting, the slider moves in the adjustment slot to change the position of the extension arm 41; further, an adjustment knob 32 is provided on the adjustment block 31, and the adjustment knob 32 contacts the portion of the adjustment plate 42 placed in the adjustment slot; that is, the adjustment knob 32 contacts the slider, and it should be noted that an adjustment hole is provided on the adjustment block 31, and a rotating rod on the adjustment knob 32 is passed through the adjustment hole and contacts the adjustment block 31. When adjusting, the position of the slider in the adjustment slot is adjusted by rotating the adjustment rotation, thereby changing the position of the detection head 6; and in the utility model, the rotating rod can directly contact the slider, and the slider is adjusted by friction; of course, the engagement method or the like in the prior art can also be used to connect the rotating rod and the slider, and the utility model will not be further described in detail on this.

[0041] like Figure 3 and Figure 6As shown, there are four probes 7, and the four probes 7 include a first needle 71, a second needle 72, a third needle 73, and a fourth needle 74 arranged in sequence. The ray receiving end 91 is arranged adjacent to the second needle 72 and the third needle 73; the ray emitting end 92 is arranged below the second needle 72 and the third needle 73; the ray emitting end 92 and the ray receiving end 91 are on the same straight line; thus, during use, the X-rays emitted by the ray emitting end 92 can be directly received by the ray receiving end 91, and the ray receiving end 91 is arranged between the second needle 72 and the third needle 73 without affecting the detection of the probe 7. Therefore, during use, the detection of the probe 7 and the X-ray detection can be carried out simultaneously without affecting each other, thereby further improving the detection efficiency.

[0042] like Figure 4 and Figure 5 As shown, a first opening 11 and a second opening 12 are oppositely opened at one end of the detection rod 5 adjacent to the detection head 6, so as to better observe the condition of the probe.

[0043] For a better understanding of the technical solution of this utility model, see Figure 6 and Figure 7 , further illustrate the working principle of the utility model:

[0044] When in use, it is necessary to connect the detection rod 5 through the data line, and connect the detection head 6 to the data line, and the other end of the wire is connected to the counter 108; the detection head 6 is provided with a circuit board 101, a ray receiving end 91 and a probe 7; wherein, a high-sensitivity DC amplifier 106 and a dual-integral A / D converter 107 constitute the circuit board 101. In the present utility model, the high-sensitivity DC amplifier 106 can select 0.2mV, 2mV, 20mV, 200mV or 2V; the ray receiving end 91 includes a preamplifier 911 and a signal detector 912, and the ray emitting end 92 is provided on the base 1, and the ray emitting end 92 includes a high-voltage power supply 922 and a low-energy X-ray tube 921. In the present utility model, the high-voltage power supply 922 is an X-ray tube high-frequency high-voltage pulse power supply GP-01, and the low-energy X-ray tube is a Varian X-ray tube, model VF50J-RH / S1193; Figure 7As shown in the circuit diagram of the present invention, the alternating current generates a 220V current and then generates a +12V power supply after passing through the power supply 102. The +12V power supply passes through the DC / DC converter 103 and generates a high-stability constant DC current by the constant current source 104. The high-stability constant DC current is one of 10μA, 100μA, 1mA, 10mA or 100mA. The high-stability constant DC current is calibrated by the current adjustment self-calibration circuit 105 and then transmitted to the A probe 7 and the D probe 7, generating a DC potential difference on the carbon paper and being measured by the B probe 7 and The C probe 7 detects and is amplified by the high-sensitivity DC amplifier 106, wherein the value range of the high-sensitivity DC amplifier 106 is 0.2mV, 2mV, 20mV, 200mV or 2V; the analog quantity is converted into a digital quantity by the dual-integration A / D converter 107; it should be noted that in the present invention, the current adjustment self-calibration circuit 105 includes a calibration bias current generation module and a control module, the calibration bias current generation module generates a calibration bias current, and the generated current includes a temperature calibration bias current and an output calibration bias current. The temperature calibration bias current is used to compensate for the current deviation of the current source to be calibrated due to temperature changes, while the output calibration bias current is used to compensate for the deviation caused by the change in the absolute value of the output current; in this way, the circuit can adapt to different working conditions and environmental changes and maintain the stability of the current; the control module calibration current generation module is connected to the high-stability constant current DC current, and controls the calibration bias current generation module to calibrate the output current of the current source to be calibrated; ensuring that the adjusted current meets the preset value. The current adjustment self-calibration circuit 105 and the module it controls may be of DIN11U-PO type, with a standard signal input of 0-5V, 0-10mA; and a standard signal output of 0-5V, 0-10mA.

[0045] At the same time, the highly stable constant DC current generated by the constant current source 104 is converted from an electrical signal to a digital signal through the A / D converter 110. The digital signal generates a pulse after passing through the PWM pulse 111 and reaches the motor driver 112, and the motor driver 112 drives the stepper motor 113 to move. Specifically, after receiving the pulse (pulse signal), the stepper motor 113 will move, which can be to rotate an angle or to move forward one step. The specific angular displacement or linear displacement generated is proportional to the input pulse, and the speed is proportional to the pulse frequency.

[0046] In addition, the digital signal converted by the A / D converter 110 is converted into an electrical signal by the D / A converter and transmitted to the high-voltage power supply 922, wherein the high-voltage power supply 922 is 25-150KV; the low-energy X-ray tube is generated by the high-voltage power supply 922; after the X-ray passes through the carbon paper, part of the X-ray is absorbed by the carbon paper, and part of the X-ray penetrates the carbon paper and is received by the signal detector 912, and then the signal detector 912 transmits the received signal to the preamplifier 911, which is amplified by the preamplifier 911 and transmitted to the dual-integration A / D converter 107 to convert the analog quantity into a digital quantity; the two parts of the digital quantity tested are calculated by the formula in the counter 108 and displayed on the display; it should be noted that in the present invention, the counter 108 is provided with a chip in the prior art, and an algorithm is built into the chip, and the algorithm is Where d is the sample thickness; μ is the absorption coefficient of the material; I is the intensity at the receiving end; and I0 is the intensity at the transmitting end.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A digital probe detection device, characterized in that: include: A base (1) and a lifting rod (2) arranged on the base (1); An adjustment block (31) is sleeved on the lifting rod (2), and the adjustment block (31) is fixed to the lifting rod (2) via a first locking device (81); An extension arm (41) is arranged on the adjustment block (31), and a detection rod (5) is passed through the extension arm (41), and the detection rod (5) is fixed to the extension arm (41) through a second locking device (82); A detection head (6) is arranged on the detection rod (5), and a plurality of probes (7) are arranged on the detection head (6), and ray receiving ends (91) are arranged at positions adjacent to the probes (7); The ray emitting end (92) is arranged on the base (1) and is placed below the adjacent probe (7).

2. The digital probe (7) detection device according to claim 1, characterized in that: Also includes: A limiting ring (10) is sleeved on the lifting rod (2), and the limiting ring (10) is fixed to the lifting rod (2) via a third locking device (83).

3. The digital probe (7) detection device according to claim 1, characterized in that: The extension arm (41) performs linear motion on the adjustment block (31).

4. The digital probe (7) detection device according to claim 3, characterized in that: The extension arm (41) is arranged on the adjustment plate (42), the adjustment block (31) is provided with an adjustment slot, and the adjustment plate (42) is arranged in the adjustment slot.

5. The digital probe (7) detection device according to claim 4, characterized in that: Also includes: The adjusting knob (32) is provided on the adjusting block (31) and contacts the portion of the adjusting plate (42) placed in the adjusting groove.

6. The digital probe (7) detection device according to claim 1, characterized in that: The number of the probes (7) is four.

7. The digital probe (7) detection device according to claim 6, characterized in that: The four probes (7) include a first needle (71), a second needle (72), a third needle (73) and a fourth needle (74) which are arranged in sequence.

8. The digital probe (7) detection device according to claim 7, characterized in that: The ray receiving end (91) is arranged adjacent to the second needle (72) and the third needle (73).

9. The digital probe (7) detection device according to claim 8, characterized in that: The ray emitting end (92) is arranged below the second needle (72) and the third needle (73).

10. The digital probe (7) detection device according to claim 1, characterized in that: The detection rod (5) is provided with a first opening (11) and a second opening (12) at one end adjacent to the detection head (6).

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