Testing of ion fans
I. Introduction of anti-static ion fan
Antistatic ion fans have been widely used in production. Whether their performance meets the standard directly affects their effectiveness in eliminating static electricity. Therefore, calibration of antistatic ion fans is important. An antistatic ion fan detector is designed. The device can be used to calibrate the anti-static ion fan's time and balance parameters. It can also be used to measure the potential of a charged object. In order to reduce the harm of static electricity in daily production and life, static eliminators such as anti-static ion fans have been widely used.
The commonly used antistatic ion fan uses the principle of corona discharge. The input voltage (220V AC) is increased to 7kV ～ 10kV AC or DC high voltage by a high-voltage power generator. It acts on the ion needle and ionizes air molecules to produce a stable and stable Positive and negative ions to eliminate static electricity.
Second, the system structure of the anti-static ion fan detector
The anti-static ion fan detector can measure the potential of a charged object and the anti-static ion fan discharge time and ion balance. It mainly includes an ion collection module, an electrostatic voltage sensor, a signal conditioning circuit, an A / D conversion circuit, a microcontroller, a high voltage generation module, a timer, an LCD display module, a serial communication circuit, and buttons.
Ion collection module: It is completely feasible to conduct the energy meter pulse group immunity test by collecting the anti-static ion fan blowout and counting the resistance and the energy meter pulse output.
High-voltage generation module: When measuring the parameters of the anti-static ion fan, it is necessary to apply high voltage to the electrode plate in advance.
Function and structure principle of antistatic ion fan detector
The anti-static ion fan detector has the function of measuring the dissipating time and ion smoothness of the anti-static ion fan.
Including the measurement of voltage, the measurement of dissipative time, the measurement of ion balance (reference standard: IEC-61340-5-1), the measurement of the potential of charged objects.
Fourth, the computer test software
Communicate with computer through serial port. Staff can use this software to control the data stored in the anti-static ion fan detector and perform data processing and other operations.
Fifth, the work process of the anti-static ion fan detector
Keep the anti-static ion fan detector away from the ion wind area before starting the system. After the system is initialized, the microcontroller controls the internal circuit to ground the electrode plate on the anti-static ion fan detector for a period of time to ensure that the charge on the electrode plate is discharged.