CN220399560U - Element tester suitable for safety inspection instrument maintenance - Google Patents
Element tester suitable for safety inspection instrument maintenance Download PDFInfo
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- CN220399560U CN220399560U CN202321881375.4U CN202321881375U CN220399560U CN 220399560 U CN220399560 U CN 220399560U CN 202321881375 U CN202321881375 U CN 202321881375U CN 220399560 U CN220399560 U CN 220399560U
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- safety inspection
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- 238000012423 maintenance Methods 0.000 title claims abstract description 15
- 238000007689 inspection Methods 0.000 title claims description 11
- 238000012360 testing method Methods 0.000 claims abstract description 23
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims abstract description 13
- 239000006096 absorbing agent Substances 0.000 claims abstract description 7
- 229910052744 lithium Inorganic materials 0.000 claims description 9
- 229920000642 polymer Polymers 0.000 claims description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 8
- 238000005476 soldering Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 14
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- OXAOLQGVAKSQSU-SZQCDHDFSA-M [1-[3-[4-[(e)-(2,6-dichlorophenyl)methoxyiminomethyl]pyridin-1-ium-1-yl]propyl]pyridin-4-ylidene]methyl-oxoazanium;dibromide Chemical compound [Br-].[Br-].ClC1=CC=CC(Cl)=C1CO\N=C\C(C=C1)=CC=[N+]1CCCN1C=CC(=C[NH+]=O)C=C1 OXAOLQGVAKSQSU-SZQCDHDFSA-M 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses an element tester suitable for maintenance of a safety detection instrument, which comprises a main body, wherein an LCD display screen, a switch button, a first interface, a second interface and a TYPE-C interface are arranged on the main body, the LCD display screen is embedded at the front end of the top of the main body, the switch button is embedded at the right side of the rear end of the top of the main body, the first interface is fixedly arranged at the left side of the rear end of the top of the main body through screw installation, a test hook is inserted on the first interface, the second interface is fixedly arranged in front of the right end of the main body through screw installation, an electric tin absorber is inserted on the second interface, and the TYPE-C interface is fixedly arranged in the middle of the rear end of the main body through screw installation. The utility model can rapidly identify and test the elements and maintain the elements, thereby effectively improving the maintenance efficiency of the safety detection instrument.
Description
Technical Field
The utility model relates to an element tester suitable for maintaining a safety detection instrument, and belongs to the technical field of element testing.
Background
When the measures such as absorption and protection are not in place in circuit design, the damage of the elements is often accelerated, more than half of faults of safety detection instruments are generated on driving components according to statistics, and when the safety detection instruments are maintained, the elements are firstly checked; however, when a multimeter and the like are used for identifying functions of the element and the pin thereof, the type of the element is often determined by observing the swinging direction of the pointer, so that the condition of excessively large dependence on experience of maintenance personnel is caused, and standardized maintenance is difficult to achieve; the misidentification element or misjudgment pin function may cause that the detection instrument cannot work normally, and may even bring about a safety risk; since the safety detection instrument is usually used in a key safety place, the quality and the efficiency of maintenance are high; therefore, there is a need for a three-pin component and pin tester that can be identified under any conditions, even without disengaging from the circuit board, and that can be quickly serviced, improving the operating efficiency of the safety inspection instrument. In order to solve the problems, a new technical scheme is provided.
Disclosure of Invention
The utility model aims to provide a component tester suitable for maintaining a safety detection instrument, so as to solve the problems in the background technology.
The utility model adopts the following technical scheme for realizing the purposes: the utility model provides an element tester suitable for safety inspection instrument maintenance, includes the main part, be provided with LCD display screen, shift knob, first interface, second interface and TYPE-C interface in the main part, the LCD display screen is inlayed in main part top front end, shift knob inlays in main part top rear end right side, first interface is fixed in main part top rear end left side through the screw installation, and peg graft on the first interface and have the test hook, the second interface is fixed in main part right-hand member place ahead through the screw installation, and peg graft on the second interface and have electronic tin absorber, TYPE-C interface is fixed in the middle of the main part rear end through the screw installation.
Preferably, the bottom of the main body is provided with a TO-92 placement box, a resistor placement box, a soldering tin wire placement hole, a TO-220 placement box and a TO-247 placement box, the TO-92 placement box is arranged at the left front end of the bottom of the main body, the resistor placement box is arranged at the left rear end of the bottom of the main body, the soldering tin wire placement hole is arranged at the right front end of the bottom of the main body, and the TO-220 placement box and the TO-247 placement box are arranged at the right rear end of the bottom of the main body.
Preferably, an Arduino UNO R3 microcontroller is fixedly installed inside the main body through a screw, and the Arduino UNO R3 microcontroller is respectively connected with an SPI interface, an I2C interface and an I/O bus interface through data wires.
Preferably, the SPI interface is connected to an MCP3201 ADC analog-to-digital converter through a data line, the MCP3201 ADC analog-to-digital converter is connected to a TLP175A optocoupler module through a data line, and the TLP175A optocoupler module is connected to the first interface through a data line.
Preferably, the I2C interface is connected to a current-voltage source through a data line, and the current-voltage source is composed of an MCP4725 DAC and a TL072 operational amplifier.
Preferably, the I/O bus interface is electrically connected with the LCD display screen and the switch button respectively through data lines.
Preferably, the TYPE-C interface is connected with a charge-discharge integrated protection board through a data line, the charge-discharge integrated protection board is connected with a lithium polymer battery through the data line, and the lithium polymer battery is respectively electrically connected with the second interface and the Arduino UNO R3 microcontroller through a switch button.
Compared with the prior art, the utility model has the beneficial effects that: the lithium polymer battery is respectively and electrically connected with the second interface and the Arduino UNO R3 microcontroller through the switch button, and can supply power to the components and the second interface in the main body through the lithium polymer battery; the SPI interface is connected with an MCP3201 ADC analog-to-digital converter through a data line, so that voltage and current between pins of the element to be measured can be easily measured; the current and voltage source consists of an MCP4725 DAC and a TL072 operational amplifier, and the current and voltage can be adjusted by the TL072 operational amplifier according to the instruction of the Arduino UNO R3 microcontroller; the TLP175A optical coupling module is connected with the first interface through a data line, and the element to be tested can be connected with a current and voltage source through the TLP175A optical coupling module; in summary, the utility model provides an element tester, which can identify and test elements without separating from a circuit board and can rapidly maintain the elements, and the tester can accurately identify the elements and distinguish pin functions under the condition of inserting and taking any pin, and particularly optimizes the maintenance requirements of a safety detection instrument, so that the maintenance efficiency and accuracy of the safety detection instrument are greatly improved, and the tester has important significance for service safety production.
Drawings
FIG. 1 is a schematic diagram of the front structure of a main body of the present utility model;
FIG. 2 is a schematic view of the back structure of the main body of the present utility model;
FIG. 3 is a schematic view of the internal structure of the main body of the present utility model;
FIG. 4 is a schematic diagram of a TYPE-C interface according to the present utility model;
in the figure: 1-a main body; 2-LCD display screen; 3-a switch button; 4-a first interface; 5-a second interface; a 6-TYPE-C interface; 7-a test hook; 8-an electric tin absorber; 9-TO-92 placement box; 10-a resistor placement box; 11-a solder wire placing hole; 12-TO-220, TO-247 placement boxes; 13-Arduino UNO R3 microcontroller; 14-SPI interface; 15-I2C interface; a 16-I/O bus interface; 17-MCP3201 ADC analog to digital converter; 18-a current voltage source; a 19-TLP175A optocoupler module; 20-a charge-discharge integrated protection plate; 21-lithium polymer battery.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
As shown in figures 1-4, the component tester suitable for the maintenance of the safety detection instrument comprises a main body 1, wherein an LCD display screen 2, a switch button 3, a first interface 4, a second interface 5 and a TYPE-C interface 6 are arranged on the main body 1, the LCD display screen 2 is embedded at the front end of the top of the main body 1, the switch button 3 is embedded at the right side of the rear end of the top of the main body 1, the first interface 4 is fixedly arranged at the left side of the rear end of the top of the main body 1 through screw installation, a test hook 7 is inserted on the first interface 4, the second interface 5 is fixedly arranged in front of the right end of the main body 1 through screw installation, an electric tin absorber 8 is inserted on the second interface 5, the TYPE-C interface 6 is fixedly arranged in the middle of the rear end of the main body 1 through screw installation, a TO-92 placing box 9, a resistor placing box 10, a soldering wire placing hole 11 and TO-220 are arranged at the bottom of the main body 1, a TO-247 placing box 12 and a TO-92 placing box 9 are arranged at the front end of the bottom left side of the main body 1, the resistor placement box 10 is arranged at the left rear end of the bottom of the main body 1, the soldering tin wire placement hole 11 is arranged at the right front end of the bottom of the main body 1, the TO-220 and TO-247 placement box 12 is arranged at the right rear end of the bottom of the main body 1, the Arduino UNO 3 micro-controller 13,Arduino UNO R3 micro-controller 13 is fixedly arranged in the main body 1 through screw installation and is respectively connected with the SPI interface 14, the I2C interface 15 and the I/O bus interface 16 through data wires, the SPI interface 14 is connected with the MCP3201 ADC analog-TO-digital converter 17 through data wires, the MCP3201 ADC analog-TO-digital converter 17 is connected with the TLP175A optocoupler module 19 through data wires, the TLP175A optocoupler module 19 is connected with the first interface 4 through data wires, the I2C interface 15 is connected with the current voltage source 18 through data wires, the current voltage source 18 consists of the MCP4725 DAC and the TL072 operational amplifier, the I/O bus interface 16 is respectively and electrically connected with the LCD display screen 2 and the switch button 3 through a data line, the TYPE-C interface 6 is connected with a charge-discharge integrated protection plate 20 through a data line, the charge-discharge integrated protection plate 20 is connected with a lithium polymer battery 21 through a data line, and the lithium polymer battery 21 is respectively and electrically connected with the second interface 5 and the Arduino UNO R3 microcontroller 13 through the switch button 3.
The specific use mode is as follows: when the system is powered on, the LCD display screen 2 displays a welcome interface and prompts a user to prepare work and connect the measuring element; the preparation work is as follows: heating the electric tin absorber 8, and controlling the electric tin absorber 8 to separate two pins of three pins welded in the circuit board by a user to prevent the interference to the test; after the user presses the "start test" button, the system first tests the element connected with the test hook 7; in the testing process, the Arduino UNO R3 microcontroller 13 controls the TLP175A optocoupler module 19 to sequentially connect the current and voltage source 18 with each pin of the element to be tested, and simultaneously controls the MCP3201 ADC analog-to-digital converter 17 to measure the current and voltage, and transmits the measurement result back to the Arduino UNO R3 microcontroller 13 through the SPI interface 14; the Arduino UNO R3 microcontroller 13 recognizes the type of the element and distinguishes its pin function from the measurement result, and then displays the test result on the LCD display screen 2.
If the reverse conductance of any pair of pins is higher and the reverse conducions of the other two pairs are lower, the tested element is a triode; two pins with higher reverse conductivity are a base electrode and an emitter electrode, and the other pin is a collector electrode; the system then performs triode amplification test, applies a preset AC signal between the base electrode and the emitter electrode, and simultaneously measures an AC output signal between the collector electrode and the emitter electrode through a built-in circuit; the microprocessor within the system then calculates and compares the amplitudes of the input and output signals to derive the transistor amplification.
If the reverse conductivities of the three pairs of pins are infinite, the tested element is an MOS tube; two pins are selected in the system for direct-current voltage test, one pin with larger reverse resistance is a grid electrode, and the other two pins are a source electrode and a drain electrode; then, the system tests the threshold voltage and the grid capacitance of the MOS transistor; a microprocessor in the system can control a voltage source to gradually increase the voltage between a grid electrode and a source electrode, and current between a drain electrode and the source electrode is monitored in real time through a current detection circuit; when the current is detected to start to increase significantly, the gate voltage at this time is the threshold voltage, then the system will turn off the MOS transistor, apply a known AC signal to the gate, measure the AC current of the gate through the current detection circuit, and determine the gate capacitance by calculating the ratio of the current to the voltage.
If the reverse conductance of the three pairs of pins is not high nor infinite, the element to be tested is a resistor, and all pins are identical. Since the resistance has no particular functional parameter to measure, the system will not be tested further.
The system displays the component identification result and the parameter test result on the LCD display screen 2, meanwhile, the system has an error detection function, if the component fails any test, the system prompts the user that the component is abnormal and can be determined to be burnt or broken, otherwise, the system continues to perform subsequent tests.
If the component passes the test, the system displays the final result on the LCD display 2, including the component type and the function and judgment instructions of each pin, and the user can save the result or start a new test by pressing a key.
Judging and describing: if the test result of the pin is found TO be different from that of the actual package, it can be proved that if the element of the TO-92 package is detected as a resistor, the element is bad, and such phenomenon usually exists after breakdown, and if parameters such as amplification factor and the like are greatly different from the actual model, the element degradation needs TO be replaced.
The foregoing is a preferred embodiment of the present utility model, and it will be apparent to those skilled in the art from this disclosure that changes, modifications, substitutions and alterations can be made without departing from the principles and spirit of the utility model.
Claims (7)
1. Element tester suitable for safety inspection instrument maintenance, including main part (1), its characterized in that: be provided with LCD display screen (2), shift knob (3), first interface (4), second interface (5) and TYPE-C interface (6) on main part (1), LCD display screen (2) are inlayed in main part (1) top front end, shift knob (3) are inlayed in main part (1) top rear end right side, first interface (4) are fixed in main part (1) top rear end left side through the screw installation, and peg graft on first interface (4) have test hook (7), second interface (5) are fixed in main part (1) right-hand member place ahead through the screw installation, and peg graft on second interface (5) have electronic tin absorber (8), TYPE-C interface (6) are fixed in the middle of main part (1) rear end through the screw installation.
2. A component tester for use in safety inspection equipment maintenance according to claim 1, wherein: the novel soldering tin wire storage box is characterized in that a TO-92 storage box (9), a resistor storage box (10), a soldering tin wire storage hole (11) and TO-220 and TO-247 storage boxes (12) are arranged at the bottom of the main body (1), the TO-92 storage box (9) is arranged at the left front end of the bottom of the main body (1), the resistor storage box (10) is arranged at the left rear end of the bottom of the main body (1), the soldering tin wire storage hole (11) is arranged at the right front end of the bottom of the main body (1), and the TO-220 and TO-247 storage boxes (12) are arranged at the right rear end of the bottom of the main body (1).
3. A component tester for use in safety inspection equipment maintenance according to claim 1, wherein: the automatic alarm device is characterized in that an Arduino UNO R3 microcontroller (13) is fixedly installed inside the main body (1) through screws, and the Arduino UNO R3 microcontroller (13) is respectively connected with an SPI interface (14), an I2C interface (15) and an I/O bus interface (16) through data lines.
4. A component tester for use in the repair of safety inspection instruments according to claim 3, wherein: the SPI interface (14) is connected with an MCP3201 ADC analog-to-digital converter (17) through a data line, the MCP3201 ADC analog-to-digital converter (17) is connected with a TLP175A optocoupler module (19) through a data line, and the TLP175A optocoupler module (19) is connected with the first interface (4) through a data line.
5. A component tester for use in the repair of safety inspection instruments according to claim 3, wherein: the I2C interface (15) is connected with a current-voltage source (18) through a data line, and the current-voltage source (18) consists of an MCP4725 DAC and a TL072 operational amplifier.
6. A component tester for use in the repair of safety inspection instruments according to claim 3, wherein: the I/O bus interface (16) is electrically connected with the LCD display screen (2) and the switch button (3) through data lines respectively.
7. A component tester for use in safety inspection equipment maintenance according to claim 1, wherein: TYPE-C interface (6) is connected with integrative protection shield (20) of charge-discharge through the data line, integrative protection shield (20) of charge-discharge is connected with lithium polymer battery (21) through the data line, lithium polymer battery (21) are connected with second interface (5), arduino UNO R3 microcontroller (13) electricity respectively through shift knob (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321881375.4U CN220399560U (en) | 2023-07-18 | 2023-07-18 | Element tester suitable for safety inspection instrument maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321881375.4U CN220399560U (en) | 2023-07-18 | 2023-07-18 | Element tester suitable for safety inspection instrument maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220399560U true CN220399560U (en) | 2024-01-26 |
Family
ID=89611217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321881375.4U Active CN220399560U (en) | 2023-07-18 | 2023-07-18 | Element tester suitable for safety inspection instrument maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220399560U (en) |
-
2023
- 2023-07-18 CN CN202321881375.4U patent/CN220399560U/en active Active
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