Electronic comprehensive test tool

Abstract

According to the electronic comprehensive test tool provided by the utility model, multiple functions of switching power supply test protection, an electronic load display, a constant current power supply, LED intelligent test, component test, signal waveform test, signal input and output and the like are integrated, so that the electronic comprehensive test tool is convenient and fast to use. When the electronic comprehensive test tool is used for detecting and maintaining the board card power supply equipment, whether short circuit exists or not can be visually displayed, and the circuit is protected from being damaged. The LED intelligent test is controlled by a single-chip microcomputer, automatically adapts to voltage and current, and can measure a whole group of single lamp beads. The voltage stabilization value and the pin arrangement sequence are accurately judged through circuit testing, and the time for comparing and searching PDF data in the maintenance process is saved. The device has functions of signal waveform testing and input and output, can measure and display a digital signal waveform state in board card maintenance, further analyzes a fault point position through the waveform condition, and meanwhile, provides a shortcut for finding the fault point by outputting a standard signal type and detecting whether a circuit in a related area is normal or not.

Description

Technical Field

[0001] The utility model relates to the field of testing tools, in particular to an electronic comprehensive testing tool. Background Art

[0002] The Chinese utility model patent application No.: CN202320917367.4 includes a test fixture body, one side of which is fixedly connected to a base plate, the top of which is slidably connected to a slide plate via a slide rail, the top of the slide plate is fixedly connected to two top blocks, the top of the slide plate is fixedly connected to two limit plates, one side of the limit plate is provided with a slide groove, and the inner wall of the slide groove is slidably connected to a slide tube.

[0003] However, the existing test fixtures have some shortcomings during use and still need to be improved. The first is that the existing test fixtures have a single function during use, and require multiple devices to complete comprehensive electronic component and system testing. This results in the need to frequently replace and use different tools during maintenance or inspection, reducing work efficiency. During the inspection and maintenance of board power equipment, if there are no effective protection measures, power-on testing or replacement of parts may cause component damage or expand the scope of the fault. Traditional testing methods are often unable to accurately measure certain specific parameters, such as the performance of LED lamp beads, or cannot effectively determine the type and pin arrangement of components. Therefore, we have made improvements to this and proposed an electronic comprehensive test fixture. Utility Model Content

[0004] The purpose of the utility model is to address the problems raised by the existing background technology. In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions: an electronic comprehensive test tool, including a test tool shell, the test tool shell is provided with an input main switch, the input main switch is connected to the input sub-switch circuit, the input sub-switch is connected to the maintenance protection switch circuit, the input main switch is connected to the output sub-switch and the custom switch circuit, the input main switch and the input sub-switch are connected to the load bulb circuit, the input main switch is connected to the power input socket circuit, the power input socket is connected to the tool load main interface socket circuit, and the tool load main interface socket is connected to the voltage output port circuit.

[0005] As a preferred technical solution of the utility model, a maintenance socket is provided on the outer shell of the test tool, and the input main switch is connected to the DC power supply module circuit.

[0006] As a preferred technical solution of the utility model, the DC power supply module is connected to a constant current controller circuit, and the constant current controller is connected to a power supply measurement meter circuit.

[0007] As a preferred technical solution of the utility model, the power supply measurement meter is connected to the Hall magnetic ring data.

[0008] As a preferred technical solution of the utility model, the Hall magnetic ring is data-connected with the LED intelligent test module, and the voltage output port is data-connected with the power adapter.

[0009] As a preferred technical solution of the utility model, the power adapter is connected to the electronic load display circuit, and the electronic load display is connected to the control display board circuit.

[0010] As a preferred technical solution of the utility model, the control display panel is data-connected to a three-in-one digital oscilloscope.

[0011] As a preferred technical solution of the utility model, the control display panel is data-connected with the voice control module, and the voice control module is data-connected with the signal generator.

[0012] Compared with the prior art, the utility model has the following beneficial effects: In the scheme of the utility model: the electronic comprehensive test tool integrates multiple functions such as switch power supply test protection, electronic load display, constant current power supply, LED intelligent test, component test, signal waveform test, signal input and output, etc., which is convenient and quick to use. When the electronic comprehensive test tool is used to detect and repair the board power supply equipment, the machine is powered on for testing before the fault is eliminated or the fault is not completely eliminated after the parts are replaced. When the power is turned on again, the components are damaged at the least, and the fault range is expanded again at the worst. The use of the test tool can effectively avoid the loss caused by the recurrence of the fault, and can intuitively display whether there is a short circuit and protect the circuit from damage. After the repair, the built-in electronic load display instrument of the test tool can simulate the load capacity of the power supply equipment on the positive line, and can monitor the power supply input voltage, current, power, running time, and power factor at the same time. The constant current power supply can power the board, module or chip to assist in the maintenance during the maintenance process. The LED intelligent test is controlled by a single-chip microcomputer, automatically adapts to the voltage and current, and can measure the entire group and a single lamp bead. The repair of the company's large LCD screen can realize the judgment of the backlight quality without disassembling the screen. Component testing can automatically identify and analyze the type and pin arrangement of components under maintenance. In particular, for voltage-stabilizing diodes and transistors, circuit testing can accurately identify the voltage-stabilizing value and pin arrangement order when the silk screen is blurred, saving time in comparing and searching PDF documents during maintenance. Signal waveform testing and input and output functions can measure and display the waveform status of digital signals during board maintenance, further analyze the fault point through the waveform situation, and detect whether the circuit in the relevant area is normal by outputting standard signal types, providing a shortcut to find the fault point. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the main structure provided by the utility model;

[0014] Figure 2 A schematic diagram of the main structure provided by the utility model;

[0015] Figure 3 A left-side structural schematic diagram provided by the utility model;

[0016] Figure 4 This is a schematic diagram of the module structure provided by the utility model.

[0017] Indicated in the figure:

[0018] 1. Test tool shell; 2. Input main switch; 3. Input sub-switch; 4. Maintenance protection switch; 5. Output sub-switch; 6. Custom switch; 7. Load bulb; 8. Power input socket; 9. Tool load main interface socket; 10. Voltage output port; 11. Maintenance socket; 12. DC power supply module; 13. Constant current controller; 14. Power supply meter; 15. Hall magnetic ring; 16. LED intelligent test module; 17. Power adapter; 18. Electronic load display; 19. Control display board; 20. Three-in-one digital oscilloscope; 21. Voice control module; 22. Signal generator. DETAILED DESCRIPTION

[0019] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0020] Therefore, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model for which protection is sought, but merely represents some embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. It should be noted that the embodiments of the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0021] Example 1: Please refer to Figure 1-Figure 4, an electronic comprehensive test tool, including a test tool shell 1, the test tool shell 1 is provided with an input main switch 2, the input main switch 2 is circuit-connected with an input sub-switch 3, the input sub-switch 3 is circuit-connected with a maintenance protection switch 4, the input main switch 2 is circuit-connected with an output sub-switch 5 and a custom switch 6, the input main switch 2 and the input sub-switch 3 are circuit-connected with a load bulb 7, the input main switch 2 is circuit-connected with a power input socket 8, the power input socket 8 is circuit-connected with a tool load main interface socket 9, and the tool load main interface socket 9 is circuit-connected with a voltage output port 10.

[0022] A maintenance socket 11 is provided on the test tool housing 1, and the input main switch 2 is connected to the DC power module 12. The DC power module 12 is connected to the constant current controller 13, and the constant current controller 13 is connected to the power supply meter 14.

[0023] The power supply meter 14 is data-connected with the Hall magnetic ring 15 , the Hall magnetic ring 15 is data-connected with the LED intelligent test module 16 , and the voltage output port 10 is data-connected with the power adapter 17 .

[0024] The power adapter 17 is connected to the electronic load display 18 circuit, and the electronic load display 18 is connected to the control display board 19 circuit. The control display board 19 is connected to the three-in-one digital oscilloscope 20 data. The control display board 19 is connected to the voice control module 21 data, and the voice control module 21 is connected to the signal generator 22 data. Input main switch 2 Power input main switch 2, 250V250V / 16A, boat-type two-way control switch, with indicator light display; Input sub-switch 3 Module power input switch, 250V / 16A, boat-type two-way control switch; Maintenance protection switch 4 Bulb load direct short circuit, 1P C16, C-type circuit breaker; Output sub-switch 5 Output to J2 socket sub-switch, 250V / 16A, boat-type two-way control switch; Custom switch 6 250V / 16A, boat-type two-way control switch; Load bulb 7 is an incandescent bulb, 220V / 90W; Power input socket 8 AC power input socket 8, Pin socket with built-in insurance, 250V / 10A;

[0025] Voltage output port 10 DC voltage output socket, 4mm banana socket; maintenance socket 11 maintenance protection socket, 5-hole socket, 250V / 10A; DC power module 12 outputs fixed DC voltage, output 30V / 2A;

[0026] The constant current controller 13 outputs a voltage of 0.6-30V and a current of 0-3A; the power supply measuring meter 14 measures parameters such as voltage and current, with a current of 0-100A and a voltage of 90-270V;

[0027] Hall magnetic ring 15 load single wire insertion, current and other parameters sampling; LED intelligent test module 16 input 0-300V adaptive, 20 / 50mA adaptive;

[0028] The power adapter 17 supplies power to the electronic load display 18, 12V / 3A; the DC electronic load display 18 of the electronic load display 18 is 200V / 300W / 30A; the control display panel 19 displays and controls the parameters of the electronic load display 18; the power adapter 17 outputs 5V / 3A voltage and provides three USB ports; the three-in-one digital oscilloscope 20 has component identification measurement and signal waveform measurement functions; the voice control module 21 is provided with an 8-way voice controller and 8-way relay switching; the signal generator 22 has voltage, current, and resistance input and output test functions.

[0029] The electronic comprehensive test tool integrates multiple functions such as switch power supply test protection, electronic load display 18, constant current power supply, LED intelligent test, component test, signal waveform test, signal input and output, etc. It is convenient and quick to use. When the electronic comprehensive test tool is used to detect and repair the board power supply equipment, the machine is powered on before the fault is eliminated or the fault is not completely eliminated after the replacement. When the power is turned on again, the components are damaged at the least, and the fault range is expanded again at the worst. The use of the test tool can effectively avoid the loss caused by the recurrence of the fault, and can intuitively display whether there is a short circuit and protect the circuit from damage. After the repair, the built-in electronic load display 18 instrument of the test tool can simulate the positive line on-site test of the load capacity of the power supply equipment, and can also monitor the power input voltage, current, power, running time, and power factor. The constant current power supply can power the board, module or chip to assist in the maintenance process. The LED intelligent test is controlled by a single-chip microcomputer, automatically adapts to the voltage and current, and can measure the entire group and a single lamp bead. The repair of the company's large LCD screen can realize the judgment of the backlight quality without disassembling the screen. Component testing can automatically identify and analyze the type and pin arrangement of components under maintenance. In particular, for voltage-stabilizing diodes and transistors, circuit testing can accurately identify the voltage-stabilizing value and pin arrangement order when the silk screen is blurred, saving time in comparing and searching PDF documents during maintenance. Signal waveform testing and input and output functions can measure and display the waveform status of digital signals during board maintenance, further analyze the fault point through the waveform situation, and detect whether the circuit in the relevant area is normal by outputting standard signal types, providing a shortcut to find the fault point.

[0030] Main electrical performance parameters of the whole machine: Input power of the whole machine: AC220V 50Hz, current 10Amax;

[0031] Maintenance socket 11 output: AC220V 50Hz, current 10Amax; Electronic load display 18 input maximum voltage, current, power: 200V, 30A, 300W;

[0032] Constant current controller 13 output: voltage DC0.6-30V, current 0-3A; power supply meter 14: voltage AC90-270V, current 0-100A, power 2500W max10A, electric energy metering 0-99999Kwh;

[0033] LED intelligent test module 16 output: voltage DC0-300V, current 20 / 50mA adaptive;

[0034] Three-in-one digital oscilloscope 20: measure input voltage 40Vmax, output 0-3.3V sine wave, square wave, triangle wave 7;

[0035] Signal generator 22: voltage signal 0-15V, 0-100mV, current signal 0-24mA, resistance signal 0-400Ω9; tooling interface: withstand voltage 300V, current 10A;

[0036] The repair socket 11 is protected by an E27 tungsten filament bulb, which uses the characteristic that the resistance of the bulb increases sharply as the temperature rises to provide protection. The power of the bulb can be selected from 60 to 200W. The wattage of the bulb increases as the power of the appliance increases. The default 90W bulb can be used to repair most board power devices.

[0037] Maintenance protection detection is mainly used for maintenance of board power equipment, mainly to detect short circuit of AC input part to prevent explosion of switch tube, rectifier bridge and other front-stage components. AC short circuit is very dangerous, which may cause the power circuit breaker to trip for protection or even cause fire. Using maintenance socket 11 can effectively reduce losses and reduce dangers.

[0038] Maintenance protection: The S7 switch is in the off state, and the internal light bulb of the tooling is connected in series to the maintenance socket 11 for short circuit detection during maintenance. Equipment monitoring: The S7 switch is in the on state. The power supply measurement meter 14 displays various parameters such as power supply voltage, current, power, power factor, power, etc., and can record the test running time of the equipment.

[0039] Lamp status: High light: Indicates that the AC input part of the board power supply device is short-circuited; Flashing / dimly bright / off: No short-circuit, you can put the S7 switch in the closed state and repair other parts. The lamp is flashing: It means that the lamp current limit is large, the circuit to be repaired has insufficient voltage or a small voltage adaptation range, or there is a PFC circuit inside the board power supply device. You can replace it with a high-power 200W lamp to improve the test.

[0040] The electronic load display 18 module can be used to detect the capacity of various batteries, power and current parameters of board-type power supply equipment. The electronic load display 18 module provides multiple measurement modes including constant current CC / constant voltage CV / constant power CP / constant resistance CR / battery internal resistance BRT / electrical parameter PT, built-in temperature-controlled large-size fan, and supports custom temperature control design. It has Bluetooth data transmission function and supports APP software for test start, operation curve display, and data report function.

[0041] Power supply current power performance PT mode introduction: long press the menu M key until the mode bar flashes, then press the + key to select PT mode, automatically enter the DC power supply automatic detector mode, connect the power supply device to be tested, turn on the test Di electronic load display 18 and run automatically for a period of time. The report will display 4 important numerical results of the power supply, making the complicated power supply test simple and accurate.

[0042] Introduction to the battery internal resistance intelligent BRT mode: Long press the M key and the function mode starts to flash, then press the + key to select the BRT mode, automatically enter the battery internal resistance intelligent mode, connect the battery to be tested, and then press the ON / OFF key to start the test. After the system intelligent scans and list tests are completed, the battery internal resistance report is displayed in the report.

[0043] Electrical performance parameters: Working voltage: DC-12V;

[0044] Maximum input voltage, current, power: 200V, 30A, 300W;

[0045] The Voice Control Module 21 is a general-purpose, portable, low-power, high-performance voice recognition development board developed for offline voice application solutions. It supports single-microphone noise reduction enhancement, single-microphone echo cancellation, 360-degree omnidirectional sound pickup, and can suppress environmental noise to ensure the accuracy of voice recognition in noisy environments. It can realize voice control of single or multiple signal control of electronic comprehensive test fixtures during the maintenance of components. Function matching test is realized for different test fixtures under pre-programming.

[0046] The constant current power supply module provides a stable and reliable constant current power supply during the maintenance of electronic devices. During the circuit maintenance process, it is often necessary to reliably test the industrial control board or components, and these tests often require the support of constant current. The role of the constant current power supply is to ensure the stability and accuracy of the output current, and to meet the current requirements of the equipment or components under test.

[0047] As an adjustable power supply with overvoltage / overcurrent / overpower / overtemperature / undervoltage protection, it is used to power the mainboard or module during maintenance.

[0048] Operation steps 1 Set the voltage value. 2 Set the constant current value and overcurrent protection value; for example, if the constant current value is set to 3.00A, the maximum current can only reach 3A. When the current reaches 3A, the LCD will display the "CC" state, otherwise the LCD will display the "CV" state.

[0049] This power supply has a constant current function and can be used for charging. It cannot be used to charge the battery without the constant current function. Since the voltage difference between the exhausted battery and the charger is large, the charging current is too large, causing battery damage. Therefore, the battery should be charged with a constant current at the beginning, and automatically switched back to constant voltage charging when it is charged to a certain level.

[0050] Operation steps: 1. Determine the floating charge voltage and charging current of the battery to be charged; if the lithium battery parameters are 3.7V / 2200mAh, then the floating charge voltage is 4.2V. If it is a 12V rechargeable battery, the floating charge voltage is generally set to around 14V. 2. Under no-load conditions, set the voltage value so that the output voltage reaches the floating charge voltage; if charging a 3.7V lithium battery, adjust the output voltage to 4.2V; 4. Connect the battery and charge.

[0051] Used as LED constant current driver;

[0052] Operation step 1: Determine the operating current and maximum operating voltage required to drive the LED;

[0053] Under no-load conditions, set the voltage and current values ​​so that the output voltage reaches the maximum operating voltage and current of the LED; connect the LED and test the machine.

[0054] LED intelligent test module 16: This module is used to light up the LED light source and judge the quality in turn. Testing LED has strict requirements on the control of current, so the test of LED requires a high-precision power supply. The LED intelligent tester can provide a stable current output to ensure the accuracy of LED testing. At the same time, it can intelligently adjust the current size according to different LED models to achieve the best effect. It effectively guarantees the test accuracy and improves the efficiency, so as to achieve the purpose of quickly and accurately judging the quality of LED light sources.

[0055] This module LED test is controlled by a single-chip microcomputer, with a digital display of real-time voltage output of 0-300V adaptive voltage, and an output current of 20 / 50MA in two gears, which switches automatically. It is suitable for most series and parallel lamp bead tests. During the test, a progressive start-up method is adopted, the voltage automatically adapts, and the current gradually increases, so that the lamp beads will not burn. The normal brightness can be reached after three to five seconds. The positive and negative poles of the light strips and lamp beads are connected in reverse, and the light strips and lamp beads will not burn. With high brightness, you can light up the LCD TV screen without disassembling the screen. When testing without disassembling the screen, disconnect the LED backlight connection of the original machine, leave the rest unchanged, turn on the machine normally, let the TV be in the on state, and then test it again to achieve better results. At the same time, the isolation of hot and cold outputs will not cause electric shock, ensuring safe and reliable testing;

[0056] The signal generator 22 has the function of measuring and outputting various signals, including voltage, current, thermocouple, resistance, and thermal resistor signals. The main functions that can be realized are: output and measurement of voltage signals 0-30V, 0-24mV, and 0-100mV, where the maximum output V is 15V. Active and passive current signals 0-24mA and 4-20mA output and measurement. Thermocouple: K, E, J, T, R, B, S, N output and measurement. Resistance / thermal resistor: 0-400Ω, -199-650℃ output and measurement (where the minimum output resistance is 15Ω).

[0057] Signal output: voltage, active current, passive current output 1 Connect the black signal line to the common terminal and the yellow signal line to the output terminal. 2 Press the yellow signal key to switch the signal type. 3 Press the up and down keys to adjust the output value. 4 Press the yellow output key, and the SOURCE on the LCD screen changes from OFF to ON, starting the output.

[0058] Signal measurement: measure voltage, active current, passive current, thermocouple signal, resistance signal, update cycle 1s. When not performing measurement function, press the blue measurement key to turn off the measurement mode to save battery power.

[0059] Voltage and active current measurement: 1 Connect the black signal wire to the common terminal and the red signal wire to the measurement terminal. 2 Press the blue measurement key to turn on the measurement function. 3 Press the blue signal key to switch the signal type. 4 The actual measurement value is displayed in the LCD measurement value display area.

[0060] The three-in-one digital oscilloscope 20 module cleverly integrates the functions of digital oscilloscope, electronic component tester, signal generator 22, continuity test, voltage measurement, temperature and humidity measurement, infrared decoding, etc. It is equipped with a large-size color dot matrix TFT display and a built-in rechargeable lithium battery;

[0061] The operation process of the utility model tooling; ATX power supply detection and load test;

[0062] (1) Prepare the ATX power test cable.

[0063] (2) Check the ATX power supply parameters to determine the input voltage, output voltage and current parameters. Take the Great Wall 180WATX power supply as an example. The power supply input voltage is AC220V, and the output voltage is 3.3V / 13A, 5V / 14A, and 12V / 10A.

[0064] (3) Power on the test tool, insert the test line, and turn on the main switch, the electronic load display 18 switch, and the voice-controlled signal oscilloscope switch in sequence.

[0065] (4) Insert the AC power cord into the maintenance socket 11, plug the test line into the output port, and confirm that the maintenance protection switch 4 is in the disconnect protection state.

[0066] (5) Turn on the switch of the maintenance socket 11 and observe the status of the built-in light bulb of the tooling. The light bulb should not be bright. At this time, the maintenance protection switch 4 can be closed.

[0067] (6) Check whether the 5VSB indicator light on the test line interface board is on normally. If normal, turn on the interface board switch.

[0068] (7) Check whether the controller voltage value displayed on the electronic load display 18 is 3.3V, long press the M key to select the constant current "CC" mode, and short press the "M" key and the "+-" key to adjust the "Is" discharge current parameter.

[0069] Server power load test; prepare the corresponding test line for the server power supply. Check the server power supply parameters and determine the input voltage, output voltage and current parameters. Take the HP server DPS-460EB power supply as an example, the power supply input voltage is AC220V, and the output voltage is DC12V / 38.3A.

[0070] Power on the test tool, insert the test line, and turn on the main switch, electronic load display 18 switch, and voice-controlled signal oscilloscope switch in sequence.

[0071] Insert the AC power cord into the maintenance socket 11, plug the test line into the output port, and confirm that the maintenance protection switch 4 is in the disconnect protection state.

[0072] Turn on the switch of the maintenance socket 11 and observe the status of the built-in light bulb of the tooling. The light bulb should not be bright. At this time, the maintenance protection switch 4 can be closed.

[0073] Press the start switch on the test line interface board and check whether the voltage value displayed on the electronic load display 18 is 12V.

[0074] Electronic load display 18 instrument long press M key to select constant current "CC" mode, short press "M" key and "+-" key to adjust "Is" discharge current parameter.

[0075] Press the "ON / OFF" button on the display controller to start the operation, check whether the voltage is maintained at 12V, press the "+" button to gradually increase the discharge current. Note that the test must be conducted within the maximum input parameters of the electronic load display 18 and the voltage*current must not exceed the maximum power range. Generally, the discharge current of the server power supply is not less than 10A.

[0076] The duration of the test is based on the power type. It is recommended that the test time should not be less than 5 minutes. During the test, the voltage should be maintained at 12V and the power surface temperature should not be higher than 40°C. If the voltage, current, and temperature parameters meet the requirements and there is no abnormality in the power supply, the power supply equipment is basically normal and can be used for testing on the main line equipment.

[0077] Test the PIS screen power board on line 1; prepare the PIS screen power test line. Check the power parameters. The power supply outputs three voltage groups of 3.5V / 2A, 12V / 1.4A, and 24V / 0.6A. Power on the test tool, insert the test line, and turn on the main switch, the electronic load display 18 switch, and the voice control signal oscilloscope switch in turn.

[0078] Insert the AC power cord into the maintenance socket 11, connect the test line to the output port, and confirm that the maintenance protection switch 4 is in the disconnect protection state.

[0079] Turn on the maintenance socket 11 switch and observe the status of the built-in bulb of the tooling. The bulb should not be bright. At this time, close the maintenance protection switch 4. Check whether the voltage value displayed on the electronic load display 18 display control board is 3.5V.

[0080] Press and hold the M key on the display controller to select the constant current "CC" mode, and short press the "M" key and the "+-" key to adjust the "Is" discharge current parameter. Press the "ON / OFF" key on the display controller to start the operation, check whether the voltage is maintained at 3.5V, press the "+" key to gradually increase the discharge current to 2A, and keep testing for 5 minutes.

[0081] The signal generator 22 selects to output 3.5V voltage and turns on the tooling interface signal switch. Press the "ON / OFF" key of the electronic load display 18 to stop the test and use the voice command "Xiao Xin", "Turn on U2 power".

[0082] Check whether the voltage value displayed on the electronic load display 18 is 12V, press the "-" key to gradually reduce the discharge current to 1.4A, press the "ON / OFF" key to start the operation, and keep the test for 5 minutes.

[0083] Press the "ON / OFF" button on the electronic load display 18 to stop the test, and use the voice command "Xiao Xin", "Turn on U3 power".

[0084] Check whether the voltage value displayed on the electronic load display 18 is 24V, press the "-" key to gradually reduce the discharge current to 0.6A, press the "ON / OFF" key to start the operation, and keep the test for 5 minutes.

[0085] If the voltage and current parameters meet the requirements and there is no abnormality in the power supply, the power board is basically normal and the screen can be installed for testing.

[0086] Battery capacity detection and calibration. Explanation of battery related parameters: The rated capacity C of the battery, in ampere-hours Ah, is the product of the time it takes to discharge the battery to the set voltage with a set current and the current. The so-called set voltage refers to the termination voltage unit V. The termination voltage can be simply understood as: the battery voltage drops to the minimum value that does not cause damage during discharge. The termination voltage value is not fixed, it decreases with the increase of the discharge current. The greater the discharge current of the same battery, the lower the termination voltage can be, and vice versa. In other words, the battery voltage is allowed to drop to a lower value when discharging with a large current, but it is not allowed to discharge with a small current, otherwise it will cause damage. In order to set uniform conditions, first of all, according to the differences in battery structure characteristics and uses, several discharge time rates are set. The most common ones are 20 hours and 10 hours. The rated discharge current is obtained by dividing the capacity by the number of hours.

[0087] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. An electronic comprehensive test tool, comprising a test tool outer shell (1), characterized in that: The test tool outer shell (1) is provided with an input main switch (2), the input main switch (2) is connected to an input sub-switch (3) in circuit, the input sub-switch (3) is connected to a maintenance protection switch (4) in circuit, the input main switch (2) is connected to an output sub-switch (5) and a custom switch (6) in circuit, the input main switch (2) and the input sub-switch (3) are connected to a load bulb (7) in circuit, the input main switch (2) is connected to a power input socket (8) in circuit, the power input socket (8) is connected to a tool load main interface socket (9) in circuit, and the tool load main interface socket (9) is connected to a voltage output port (10) in circuit.

2. The electronic comprehensive testing tool according to claim 1, characterized in that: A maintenance socket (11) is provided on the test tool outer shell (1), and the input main switch (2) is connected to a DC power supply module (12) circuit.

3. The electronic comprehensive testing tool according to claim 2, characterized in that: The DC power supply module (12) is connected to a constant current controller (13) circuit, and the constant current controller (13) is connected to a power supply measurement meter (14) circuit.

4. The electronic comprehensive testing tool according to claim 3, characterized in that: The power supply measurement meter (14) is data-connected to the Hall magnetic ring (15).

5. The electronic comprehensive testing tool according to claim 4, characterized in that: The Hall magnetic ring (15) is data-connected to the LED intelligent test module (16), and the voltage output port (10) is data-connected to the power adapter (17).

6. The electronic comprehensive testing tool according to claim 5, characterized in that: The power adapter (17) is connected to an electronic load display (18) circuit, and the electronic load display (18) is connected to a control display panel (19) circuit.

7. The electronic comprehensive test tool according to claim 6, characterized in that: The control display panel (19) is data-connected to a three-in-one digital oscilloscope (20).

8. The electronic comprehensive testing tool according to claim 7, characterized in that: The control display panel (19) is data-connected to the voice control module (21), and the voice control module (21) is data-connected to the signal generator (22).

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