The electromagnetic relay test system based on TMS320F28335

An electromagnetic relay test system is designed based on the 32-bit floating-point Microcontrollers (MCU): TMS320F28335. In the test system, the relay characteristic parameters, such as the coil resistance, pull-in voltage, release voltage and time parameters, can be tested by sampling of the relay coil current, electric shock voltage and drive supply voltage. The tested results can be displayed on the LCD and transmitted to PC. The sampling frequency of the system is 10 M Hertz, which is higher than the other relay test system. The whole system is portable and has low power consumption. Finally, the experimental results verify that the required parameters of the relay can be tested accurately using the designed system.