Exhaust gas aftertreatment system DCU control unit function tester
1. Equipment pictures
Adopt 6001 standard cabinet form.
2. Device function description
1. Online burning program
2. Measurement of supply voltage and internal voltage module voltage
3. Test of CAN communication
4. Simulation of air flow sensor and detection of DCU acquisition value
5. Simulation of urea tank temperature and liquid level sensor and detection of DCU acquisition value
6. Simulation of catalyst inlet and outlet temperature sensors and detection of DCU acquisition values
7. Simulation of PTO signal and detection of DCU acquisition value
8. DCU control fault light status detection
9. DCU controls the detection of the liquid level lamp status of the urea tank
10. DCU detection of heating water valve state control
11. DCU detection of backup drive status control
Technical indicators
1. Voltage acquisition (16-bit AD is used for voltage acquisition)
A. Multi-channel: 32 channels
B. Voltage measurement range: DC 0~100V
AC 0~100V
C. Measurement accuracy: better than ±(1%+0.01V)
2. High-speed digital IO
A. Multi-channel: 32 channels
B. Level output: high is 5V
Low is 0V
C. Level input: greater than 3.5V is logic high
less than 1.5V is logic low
3. Load connection switch (provide load switch, external load according to actual needs)
A. Maximum switching voltage: 250V
B. Maximum switching current: 5A
C. Maximum switching power: 150W
D. Switch channel: 16 channels per board (can be expanded as needed)
4. Program-controlled voltage (12-bit DA output in common)
A. Number of channels: 8 channels
B. Voltage output range: 0-5V step 1mV
C. Voltage output accuracy: ±(1%+0.01V)
D. Current drive capability: 0-100mA
5. Sampling resistor output
A. Number of channels: 5 dual-point outputs
B. Resistance accuracy ±2%
C. Withstand voltage range 0-24V
D. Endured power consumption 0.25W
E. 8 resistance gears with fixed resistance value per channel
6. Program-controlled frequency source (8 channels of the same source)
A. Number of channels: 8
B. Voltage: TTL level
C. Driving capacity: less than 50mA
D.9833 Program-controlled frequency source range: 10Hz-2MHz
Accuracy: ±1%+1Hz
Resolution: 1Hz
7. Current acquisition
A. Current measurement range 0-32A
B. Measurement accuracy ±3%
C. Response time 1ms
3. Comparative analysis of project import efficiency and manual testing
| artificial | SRC functional test system | ||
| Detection speed | 50S/PIC | 15S/PIC | |
| Inspection record | No records or manual records | Automatically record into the database for easy query and data backtracking | |
| Inspection quality | May be influenced by human factors | Automatically judge according to the settings, without the influence of human factors | |
| Detection efficiency | Working for a long time, people are easily fatigued, resulting in a decrease in efficiency and also affecting the quality | 24 hours continuous work |
Fourth, equipment import cost recovery cycle accounting
| project | before import | after import |
| Single detection time (seconds) | 50 | 15 |
| 8 hours capacity per station | 576 | 1920 |
| Save 2 to 3 people after importing equipment | ||
