Universal test load box for controller
By designing a universal test load box for controllers, simplifying the internal circuit structure and enhancing compatibility, the problems of complex design, high cost, lack of versatility and flexibility of existing load boxes are solved, and efficient and accurate controller testing is achieved.
Patent Information
- Application Number
- CN202422834401.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-20
AI Technical Summary
Existing load banks are complex in design, high in cost, lack versatility and flexibility, resulting in poor test accuracy, compatibility issues and high maintenance difficulty.
A universal controller test load box is designed. It includes a load box power supply module, a high-side output module, a low-side output module, a motor test module, a resistance source input module, a voltage source input module, a 5V output detection module, a wake-up source input module, and a digital quantity module. It is connected to the controller under test through 2.5mm plug-in terminals, simplifying the internal circuit and enhancing compatibility.
The simplified structure of the load box is achieved, the cost is reduced, the test efficiency, accuracy and reliability are improved, the performance evaluation of the controller under different load and signal conditions is ensured, and the compatibility and stability are enhanced.
Smart Images
Figure CN223450346U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to controller test technical field, concretely relates to a kind of controller general test load box. BACKGROUND
[0002] In the automotive electronics industry, the function detection and verification of the controller is an important link to ensure its reliability and performance, and the test load box simulates the load conditions in the actual working environment to detect the functions and verify the performance of various types of controllers to evaluate the performance and reliability of the controller.
[0003] Most of the existing load boxes are too complex in internal circuit design to achieve multiple test functions, which not only increases the design and manufacturing costs, but also increases the maintenance difficulty and failure rate of the equipment. Moreover, due to the complex internal circuit structure and the use of high-cost components, the market price of many load boxes is relatively high. The load box design is not suitable for testing specific types of controllers, and lacks versatility and flexibility. The single function cannot adapt to different controller testing scenarios, greatly limiting the application range. Due to the specificity of the load box design, some load boxes may have compatibility problems when connected to different types of controllers, which cannot be tested correctly, affecting the accuracy of the test and increasing the test preparation time.
[0004] Therefore, in order to solve the above problems, it is necessary to develop a controller universal test load box to simplify the internal circuit structure of the load box, reduce the cost of the load box, optimize the function of the load box and enhance the compatibility of the load box, thereby improving the versatility, flexibility and test efficiency of the load box. UTILITY MODEL CONTENTS
[0005] The utility model aims to provide a kind of controller universal test load box to solve the technical problems mentioned in the above background art.
[0006] In order to achieve the above purpose, the utility model discloses a kind of controller universal test load box, including load box and measured controller, and the load box and the measured controller line are connected by a plurality of 2.5mm plug-in terminals, the load box includes load box power supply module, high side output module, low side output module, motor test module, resistance source input module, voltage source input module, 5V output detection module, wake-up source input module and digital module;
[0007] The load box power supply module is connected to the power supply through the 2.5mm plug-in terminal, which provides power supply for the entire load box and the measured controller, ensures that all modules in the load box have working voltage and work normally.
[0008] The high-side output module controls the high potential end of the current path connected to the load, and simulates the switching behavior of the high end of the load to test the control ability of the measured controller to the high-side driver.
[0009] The low-side output module controls the low potential end of the current path connected to the load, and simulates the switching behavior of the low end of the load to test the control ability of the measured controller to the low-side driver.
[0010] The motor test module is used in combination with the high-side output module and the low-side output module, and simulates the load characteristics of different types of motors to test the performance of the measured controller in driving and controlling the motor.
[0011] The resistance source input module connects the input end of the measured controller through 2.5mm plug-in terminals, and can provide adjustable resistance load to test the performance of the measured controller under different resistance loads.
[0012] The voltage source input module connects the input end of the measured controller through 2.5mm plug-in terminals, and can provide adjustable voltage signals to test the response of the measured controller under different voltage signals.
[0013] The 5V output detection module directly connects the 5V output end of the measured controller through 2.5mm plug-in terminals for detection, detects and verifies the 5V output signal of the measured controller, and is used to ensure the stability and accuracy of the 5V output of the measured controller.
[0014] The wake-up source input module is connected to the wake-up input end of the measured controller through 2.5mm plug-in terminals, and can provide a wake-up signal to simulate the wake-up controller to test the response and processing ability of the measured controller to the wake-up signal.
[0015] The digital module is connected to the measured controller through 2.5mm plug-in terminals for digital signal input and output test, and is used to test the digital signal processing and control ability of the measured controller.
[0016] Optionally, in the load box power supply module, the ground end GND of the load box is short-circuited with the ground end GND of the measured controller through 2.5mm plug-in terminals, and the power supply end of the load box is short-circuited with the power supply end of the measured controller.
[0017] Optionally, the high-side output module includes 8 2.5mm plug-in terminals, a high-side output 1 terminal, a high-side output 2 terminal, a high-side output 3 terminal, a high-side output 4 terminal, a high-side output 5 terminal, a high-side output 6 terminal, a high-side output 7 terminal, a high-side output 8 terminal, a resistor R1, a resistor R3, a resistor R6, a resistor R9, a resistor R13, a resistor R21, a resistor R25, a resistor R27, a resistor R33, a resistor R35, a resistor R38, a resistor R40, a resistor R42, a resistor R44, a resistor R46, a resistor R48, a diode D6, a diode D9, a diode D13, a diode D16, a diode D18, a diode D20, a diode D22, a diode D24, a diode D6, 8 green LEDs Green, and 8 ground terminals GND, which are combined into eight groups of high-side output lines connected to the high-side output terminals of the controller under test, output power to the load resistors inside the load box through the 2.5mm plug-in terminals, and verify the high-side output function of the controller under test. When the high-side output of the controller under test has a voltage output, the corresponding green LED Green on the load box will also light up.
[0018] Optionally, the low-side output module includes 8 power terminals, 8 2.5mm plug-in terminals, a low-side output 1 terminal, a low-side output 2 terminal, a low-side output 3 terminal, a low-side output 4 terminal, a low-side output 5 terminal, a low-side output 6 terminal, a low-side output 7 terminal, a low-side output 8 terminal, a resistor R2, a resistor R4, a resistor R63, a resistor R64, a resistor R65, a resistor R66, a resistor R67, a resistor R68, a resistor R69, a resistor R70, a resistor R71, a resistor R72, a resistor R73, a resistor R74, a resistor R75, a resistor R76, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, a diode D7, a diode D36, a diode D37, 8 green LEDs Green, which are combined into eight groups of high-side output lines connected to the low-side output terminals of the controller under test, output 0V to the load resistors inside the load box through the 2.5mm plug-in terminals, and verify the low-side output function of the controller under test. When the low-side output of the controller under test outputs 0V, the corresponding green LED Green on the load box will also light up.
[0019] Optionally, the motor test module includes a motor output 1 end, a resistor R50, a resistor R52, a resistor R54, a diode D26, a diode D28, a green light LED-Green, a yellow light LED-Yellow, and a motor output 2 end, which are connected to the motor output 1 end and the motor output 2 end of the measured controller respectively, and output high and low levels respectively, so that when the motor output 1 end of the measured controller is high and the motor output 2 end is low, the motor rotates forward; when the motor output 1 end of the measured controller is low and the motor output 2 end is high, the motor rotates in reverse; and the resistor R52 simulates a motor load, and when the motor rotates forward, the diode D26 controls the green light LED-Green to light, and when the motor rotates in reverse, the diode D28 controls the yellow light LED-Yellow to light.
[0020] Optionally, the resistance source input module includes a ground end GND, a resistor R29, a resistor R30, a resistor R31, a resistor R32, a resistance source input 1 end, a resistance source input 2 end, a resistance source input 3 end, a resistance source input 4 end, and four 2.5mm plug-in terminals, which are connected to the measured controller through the 2.5mm plug-in terminals to simulate input resistance to ground, and the measured controller takes different voltage values through voltage division with internal pull-up resistors.
[0021] Optionally, the voltage source input module includes a load box internal 5V output module end, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a voltage source input 1 end, a voltage source input 2 end, a voltage source input 3 end, a voltage source input 4 end, a voltage source input 5 end, a voltage source input 6 end, a voltage source input 7 end, and seven 2.5mm plug-in terminals, which are connected to the measured controller to simulate input voltage through the 2.5mm plug-in terminals, and different pull-up resistors in the load box take different voltage values through voltage division with internal pull-down resistors of the measured controller.
[0022] Optionally, the 5V output detection module includes two 2.5mm plug-in terminals, two 5V power supply output 1 ends, a resistor R58, a resistor R57, a resistor R56, a resistor R55, a diode D30, a diode D29, two green lights LED-Green, and a ground end GND, which are connected to the 5V voltage end output by the measured controller through the 2.5mm plug-in terminals, test the load resistance inside the load box to test the load capacity, and the corresponding green light LED-Green will light up when the output is normal.
[0023] Optionally, the wake-up source input module includes 2 power supply ends, a switch S9, a switch S8, a resistor R60, a resistor R59, a diode D32, a diode D31, 2 ground ends GND, a voltage type wake-up source 1 end, a voltage type wake-up source 2 end and 2 2.5mm plug-in terminals, the measured controller is connected through the 2.5mm plug-in terminals, when the switch S8 and the switch S9 are closed, voltage enters the measured controller, thereby waking up the measured controller, when the voltage type wake-up source 1 end and the voltage type wake-up source 2 end are output, the corresponding LED-Green is also lighted.
[0024] Optionally, the digital module includes 8 2.5mm plug-in terminals, a digital output 1 end, a digital input 1 end, a digital output 2 end, a digital input 2 end, a digital output 3 end, a digital input 3 end, a digital output 4 end and a digital input 4 end, and 4 groups of digital output ends and digital input ends are shorted together, the load box functions as a jumper, the digital output end of the measured controller is shorted together with the digital input end of the measured controller through the load box, thereby functioning as a signal transceiver and verifying the circuit function.
[0025] Compared with the prior art, the controller universal test load box has the following advantages:
[0026] In the controller universal test load box, the load box power supply module, the high-side output module, the low-side output module, the motor test module, the resistance source input module, the voltage source input module, the 5V output detection module, the wake-up source input module and the digital module are arranged in the load box, and the load box is connected with the measured controller through the 2.5mm plug-in terminals, so that the internal circuit structure of the load box is simplified, the function of the load box is optimized, the compatibility of the load box is enhanced, the performance and reliability of the measured controller under different loads and signal conditions are comprehensively evaluated, the stable operation of the controller in practical application is ensured, and the test efficiency, test accuracy, reliability, safety and test cost are improved. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 It is a controller universal test load box module structure schematic view of the utility model.
[0028] Figure 2 It is a circuit structure schematic view of the load box power supply module of the utility model.
[0029] Figure 3 It is a circuit structure schematic view of the high-side output module of the utility model.
[0030] Figure 4 It is a circuit structure schematic view of the low-side output module of the utility model.
[0031] Figure 5 It is the circuit structure schematic view of the motor test module of the utility model.
[0032] Figure 6 It is the circuit structure schematic view of the motor test module of the utility model.
[0033] Figure 7 It is the circuit structure schematic view of the voltage source input module of the utility model.
[0034] Figure 8 It is the circuit structure schematic view of the 5V output detection module of the utility model.
[0035] Figure 9 It is the circuit structure schematic view of the wake-up source input module of the utility model.
[0036] Figure 10 It is the circuit structure schematic view of the digital quantity module of the utility model. DETAILED DESCRIPTION
[0037] The technical scheme of the utility model will be described in detail below through specific embodiments.
[0038] Referring to Figures 1-10 The utility model discloses a controller general test load box, including load box and measured controller, and the load box with measured controller line is connected through a plurality of 2.5mm plug -in type terminal wiring, the load box includes load box power module, high side output module, low side output module, motor test module, resistance source input module, voltage source input module, 5V output detection module, wake -up source input module and digital quantity module again;
[0039] The load box power module is connected to the power supply through 2.5mm plug -in type terminal, provides the power supply for whole load box and measured controller, ensures that all modules in the load box have working voltage and normally work.
[0040] The high side output module control is connected to the high potential end of the current path of load, and the switching behavior of the high end of the analog load is moved to test the control ability of the measured controller to the high side driver.
[0041] The low side output module control is connected to the low potential end of the current path of load, and the switching behavior of the low end of the analog load is moved to test the control ability of the measured controller to the low side driver.
[0042] The motor test module combines the high side output module and the low side output module and is used, and the load characteristics of different types of motors are simulated to test the performance of the measured controller to motor drive and control.
[0043] The resistance source input module connects the input end of the measured controller through 2.5mm plug-in terminals, and can provide adjustable resistance load to test the performance of the measured controller under different resistance load.
[0044] The voltage source input module connects the input end of the measured controller through 2.5mm plug-in terminals, and can provide adjustable voltage signal to test the response of the measured controller under different voltage signals.
[0045] The 5V output detection module directly connects the 5V output end of the measured controller through 2.5mm plug-in terminals for detection, detects and verifies the 5V output signal of the measured controller, and is used to ensure the stability and accuracy of the 5V output of the measured controller.
[0046] The wake-up source input module is connected to the wake-up input end of the measured controller through 2.5mm plug-in terminals, and can provide wake-up signal to simulate the situation of wake-up controller, so as to test the response and processing capacity of the measured controller to the wake-up signal.
[0047] The digital module is connected with the measured controller through 2.5mm plug-in terminals for digital signal input and output test, and is used to test the digital signal processing and control capacity of the measured controller.
[0048] Preferably, in the load box power supply module, the ground end GND of the load box is short-circuited with the ground end GND of the measured controller through 2.5mm plug-in terminals, and the power supply end of the load box is short-circuited with the power supply end of the measured controller.
[0049] Preferably, the high-side output module includes 8 2.5mm plug-in terminals, a high-side output 1 terminal, a high-side output 2 terminal, a high-side output 3 terminal, a high-side output 4 terminal, a high-side output 5 terminal, a high-side output 6 terminal, a high-side output 7 terminal, a high-side output 8 terminal, a resistor R1, a resistor R3, a resistor R6, a resistor R9, a resistor R13, a resistor R21, a resistor R25, a resistor R27, a resistor R33, a resistor R35, a resistor R38, a resistor R40, a resistor R42, a resistor R44, a resistor R46, a resistor R48, a diode D6, a diode D9, a diode D13, a diode D16, a diode D18, a diode D20, a diode D22, a diode D24, a diode D6, 8 green light LEDs-Green, and 8 ground terminals GND, which are combined into eight groups of high-side output lines connected to the high-side output terminals of the controller under test, output power to the load resistors inside the load box through the 2.5mm plug-in terminals, and verify the high-side output function of the controller under test. When the high-side output of the controller under test has a voltage output, the corresponding green light LED-Green on the load box will also light up.
[0050] Preferably, the low-side output module includes 8 power terminals, 8 2.5mm plug-in terminals, a low-side output 1 terminal, a low-side output 2 terminal, a low-side output 3 terminal, a low-side output 4 terminal, a low-side output 5 terminal, a low-side output 6 terminal, a low-side output 7 terminal, a low-side output 8 terminal, a resistor R2, a resistor R4, a resistor R63, a resistor R64, a resistor R65, a resistor R66, a resistor R67, a resistor R68, a resistor R69, a resistor R70, a resistor R71, a resistor R72, a resistor R73, a resistor R74, a resistor R75, a resistor R76, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, a diode D7, a diode D36, a diode D37, 8 green light LEDs-Green, which are combined into eight groups of high-side output lines connected to the low-side output terminals of the controller under test, output 0V to the load resistors inside the load box through the 2.5mm plug-in terminals, and verify the low-side output function of the controller under test. When the low-side output of the controller under test outputs 0V, the corresponding green light LED-Green on the load box will also light up.
[0051] Preferably, the motor test module includes a motor output 1 end, a resistor R50, a resistor R52, a resistor R54, a diode D26, a diode D28, a green light LED-Green, a yellow light LED-Yellow, and a motor output 2 end, which are connected to the motor output 1 end and the motor output 2 end of the measured controller respectively, and output high and low levels respectively, so that when the motor output 1 end of the measured controller is high and the motor output 2 end is low, the motor rotates forward; when the motor output 1 end of the measured controller is low and the motor output 2 end is high, the motor rotates in reverse; and the resistor R52 simulates a motor load, and when the motor rotates forward, the diode D26 controls the green light LED-Green to light, and when the motor rotates in reverse, the diode D28 controls the yellow light LED-Yellow to light.
[0052] Preferably, the resistor source input module includes a ground end GND, a resistor R29, a resistor R30, a resistor R31, a resistor R32, a resistor source input 1 end, a resistor source input 2 end, a resistor source input 3 end, a resistor source input 4 end, and four 2.5mm plug-in terminals, which are connected to the measured controller through the 2.5mm plug-in terminals to simulate input resistance to ground, and the measured controller takes different voltage values by dividing voltage with an internal pull-up resistor.
[0053] Preferably, the voltage source input module includes a load box internal 5V output module end, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a voltage source input 1 end, a voltage source input 2 end, a voltage source input 3 end, a voltage source input 4 end, a voltage source input 5 end, a voltage source input 6 end, a voltage source input 7 end, and seven 2.5mm plug-in terminals, which are connected to the measured controller to simulate input voltage through the 2.5mm plug-in terminals, and different pull-up resistors in the load box take different voltage values by dividing voltage with a pull-down resistor inside the measured controller.
[0054] Preferably, the 5V output detection module includes two 2.5mm plug-in terminals, two 5V power supply output 1 ends, a resistor R58, a resistor R57, a resistor R56, a resistor R55, a diode D30, a diode D29, two green lights LED-Green, and a ground end GND, which are connected to the 5V voltage end output by the measured controller through the 2.5mm plug-in terminals, test the load resistance inside the load box to test the load capacity, and the corresponding green light LED-Green will light up when the output is normal.
[0055] Preferably, the wake-up source input module comprises 2 power supply ends, a switch S9, a switch S8, a resistor R60, a resistor R59, a diode D32, a diode D31, 2 ground ends GND, a voltage wake-up source 1 end, a voltage wake-up source 2 end and 2 2.5mm plug-in terminals, the measured controller is connected through the 2.5mm plug-in terminals, when the switch S8 and the switch S9 are closed, voltage enters the measured controller, thereby waking up the measured controller, when the voltage wake-up source 1 end and the voltage wake-up source 2 end are output, the corresponding LED-Green is also lit.
[0056] Preferably, the digital module comprises 8 2.5mm plug-in terminals, a digital output 1 end, a digital input 1 end, a digital output 2 end, a digital input 2 end, a digital output 3 end, a digital input 3 end, a digital output 4 end and a digital input 4 end, and 4 groups of digital output ends and digital input ends are shorted together, the load box functions as a jumper, the digital output end of the measured controller is shorted to the digital input end of the measured controller through the load box, thereby playing a signal receiving and transmitting function to verify the circuit function.
[0057] Working principle: in the actual working process, after the load box and the measured controller are connected through 2.5mm plug-in terminals, the load box power supply module converts external AC or DC power into a same working voltage suitable for the load box and the measured controller, thereby ensuring voltage consistency, reducing voltage deviation and power noise interference, shorting the ground ends GND of the load box and the measured controller to realize common ground, ensuring potential reference consistency and improving signal transmission accuracy, then through the control of the high-side and low-side output modules, different load conditions are simulated, the driving capacity of the measured controller to the load is tested, the motor test module is used to verify the control performance of the controller to various motor loads, the resistance source and voltage source input modules are used to simulate sensor signals and test the response capacity of the controller, the 5V output detection module is used to ensure the stability of the 5V output voltage of the controller, the wake-up source input module is used to provide a wake-up signal to test the wake-up function of the controller, and the digital module is used to test the input and output of digital signals and verify the digital signal processing capacity of the controller.
[0058] The above only describes the preferred embodiments of the present application and is not used to limit the application, and any modification, equivalent replacement, improvement, etc. within the design concept of the present application shall be included in the protection scope of the present application.
Claims
1. A universal test load box for a controller, characterized by: The system includes a load box and a controller under test, wherein the load box and the controller under test are connected via a plurality of 2.5mm plug-in terminals. The load box further includes a load box power supply module, a high-side output module, a low-side output module, a motor test module, a resistance source input module, a voltage source input module, a 5V output detection module, a wake-up source input module, and a digital quantity module. The load box power supply module is connected to the power supply via a 2.5mm plug-in terminal to provide power for the entire load box and the controller under test; The high-side output module controls the high-potential end of the current path connected to the load by simulating the switching behavior of the high-end of the load; The low-side output module controls the low-potential end of the current path connected to the load by simulating the switching behavior of the low end of the load; The motor test module is used in combination with the high-side output module and the low-side output module to simulate the load characteristics of different types of motors; The resistance source input module is connected to the input end of the controller under test through a 2.5mm plug-in terminal, and can provide an adjustable resistance load; The voltage source input module is connected to the input end of the controller under test through a 2.5mm plug-in terminal and can provide an adjustable voltage signal; The 5V output detection module is directly connected to the 5V output end of the controller under test through a 2.5mm plug-in terminal to detect and verify the 5V output signal of the controller under test; The wake-up source input module is connected to the wake-up input terminal of the controller under test through a 2.5mm plug-in terminal, and can provide a wake-up signal to simulate the situation of waking up the controller; The digital quantity module is connected to the controller under test via a 2.5mm plug-in terminal to perform digital signal input and output testing.
2. The universal test load box for controller according to claim 1, characterized in that: In the load box power supply module, the ground terminal GND of the load box is short-circuited with the ground terminal GND of the controller under test through a 2.5mm plug-in terminal, and the power supply terminal of the load box is short-circuited with the power supply terminal of the controller under test.
3. The universal test load box for controller according to claim 2, characterized in that: The high-side output module includes 8 2.5mm plug-in terminals, high-side output 1, high-side output 2, high-side output 3, high-side output 4, high-side output 5, high-side output 6, high-side output 7, high-side output 8, resistor R1, resistor R3, resistor R6, resistor R9, resistor R13, resistor R21, resistor R25, resistor R27, resistor R33, resistor R35, resistor R38, resistor R40, resistor R42, resistor R44, resistor R46, resistor R48, diode D6, diode D9, diode D1 3. Diode D16, diode D18, diode D20, diode D22, diode D24, diode D6, 8 green LEDs-Green and 8 ground terminals GND are respectively combined into eight groups of high-side output lines connected to the high-side output terminal of the controller under test, and output power to the load resistor inside the load box through a 2.5mm plug-in terminal to verify the high-side output function of the controller under test. When the high-side output of the controller under test has a voltage output, the corresponding green LED-Green on the load box will also light up.
4. The universal test load box for controller according to claim 3, characterized in that: The low-side output module includes 8 power terminals, 8 2.5mm plug-in terminals, low-side output 1 terminal, low-side output 2 terminal, low-side output 3 terminal, low-side output 4 terminal, low-side output 5 terminal, low-side output 6 terminal, low-side output 7 terminal, low-side output 8 terminal, resistor R2, resistor R4, resistor R63, resistor R64, resistor R65, resistor R66, resistor R67, resistor R68, resistor R69, resistor R70, resistor R71, resistor R72, resistor R73, resistor R74, resistor R75, resistor R76, diode Tube D1, diode D2, diode D3, diode D4, diode D5, diode D7, diode D36, diode D37, and 8 green LEDs-Green are respectively combined into eight groups of high-side output lines connected to the low-side output end of the controller under test, and 0V is output to the load resistor inside the load box through a 2.5mm plug-in terminal to verify the low-side output function of the controller under test. When the low-side output of the controller under test is 0V, the corresponding green LED-Green on the load box will also light up.
5. The universal test load box for controller according to claim 4, characterized in that: The motor test module includes a motor output 1 end, a resistor R50, a resistor R52, a resistor R54, a diode D26, a diode D28, a green light LED-Green, a yellow light LED-Yellow and a motor output 2 end, which are respectively connected to the motor output 1 end and the motor output 2 end of the controller under test, and respectively output a high level and a low level. When the motor output 1 end of the controller under test is a high level and the motor output 2 end is a low level, the motor rotates forward; when the motor output 1 end of the controller under test is a low level and the motor output 2 end is a high level, the motor reverses; and the resistor R52 simulates the motor load. When the motor is running forward, the diode D26 controls the green light LED-Green to be on, and when it is running backward, the diode D28 controls the yellow light LED-Yellow to be on.
6. The universal test load box for controller according to claim 5, characterized in that: The resistance source input module includes a ground terminal GND, a resistor R29, a resistor R30, a resistor R31, a resistor R32, a resistance source input 1 terminal, a resistance source input 2 terminal, a resistance source input 3 terminal, a resistance source input 41 terminal and four 2.5mm plug-in terminals. The controller under test is connected through the 2.5mm plug-in terminals and the input resistance to ground is simulated. The controller under test samples different voltage values by dividing the voltage with the internal pull-up resistor.
7. The universal test load box for controller according to claim 6, characterized in that: The voltage source input module includes a 5V output module end inside the load box, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a voltage source input 1 end, a voltage source input 2 end, a voltage source input 3 end, a voltage source input 4 end, a voltage source input 5 end, a voltage source input 6 end, a voltage source input 7 end and 7 2.5mm plug-in terminals. The analog input voltage of the controller under test is connected through the 2.5mm plug-in terminals, and different pull-up resistors in the load box are divided by the pull-down resistors inside the controller under test to obtain different voltage values.
8. The universal test load box for controller according to claim 7, characterized in that: The 5V output detection module includes two 2.5mm plug-in terminals, two 5V power supply output 1 terminals, resistor R58, resistor R57, resistor R56, resistor R55, diode D30, diode D29, two green lights LED-Green and ground terminal GND. The 5V voltage end output by the controller under test is connected through the 2.5mm plug-in terminal, and the load capacity is tested through the internal load resistance of the load box. When the output is normal, the corresponding green light LED-Green will be on.
9. The universal test load box for controller according to claim 8, characterized in that: The wake-up source input module includes two power supply terminals, a switch S9, a switch S8, a resistor R60, a resistor R59, a diode D32, a diode D31, two ground terminals GND, a voltage-type wake-up source 1 terminal, a voltage-type wake-up source 2 terminal, and two 2.5mm plug-in terminals. The controller under test is connected through the 2.5mm plug-in terminals. When switches S8 and S9 are closed, voltage enters the controller under test, thereby waking up the controller under test. When the voltage-type wake-up source 1 terminal and the voltage-type wake-up source 2 terminal have outputs, the corresponding LED-Green will also be lit.
10. The universal test load box for controller according to claim 9, characterized in that: The digital module includes 8 2.5mm plug-in terminals, digital output 1, digital input 1, digital output 2, digital input 2, digital output 3, digital input 3, digital output 4, and digital input 4, forming 4 groups of digital output terminals and digital input terminals that are short-circuited together. The load box acts as a jumper, and the digital output terminal of the controller under test is short-circuited with the digital input terminal of the controller under test through the load box, and is used to receive and send signals to verify the circuit function.