33results about How to "Meet the calibration needs" patented technology

The invention discloses a portable fast pulse generating device and a manufacturing method thereof, comprising: a high-frequency PCB circuit board, a main loop structure, a secondary loop structure, a power supply and a load; both the primary loop structure and the secondary loop structure are built on a high-frequency PCB circuit board; the main circuit structure includes the main capacitor C 1 , mercury switch and filter module; all components of the main circuit structure are in a straight line; the secondary circuit structure includes a high-voltage DC voltage source and a charging resistor R 1 ; High voltage DC voltage source and charging resistor R 1 Used to form the main capacitor C 1 The charging circuit; the power supply is used for the power supply of the high-voltage DC voltage source; the power supply is also used for the triggering of the mercury switch; the load is connected to the high-frequency PCB circuit board through the SMA plug and the SMA socket. The invention miniaturizes the signal source used to generate the electromagnetic wave for calibration, and can meet the calibration requirement of the ultra-high frequency sensor for partial discharge measurement under actual working conditions on site.

The invention provides a distortion testing device for an f-theta optical system. The testing device comprises a turntable, a guide rail, a target generator and an image analyzer in sequential arrangement, wherein the guide rail is arranged on the turntable, the target generator is arranged at the object space of a calibrated optical system, and the image analyzer is arranged at the image space of the calibrated optical system. The distortion calibration device and a distortion calibration method for the f-theta optical system have the advantage that the providing of targets in different object distances can be simultaneously realized.

A calibration device and calibration method for a heat flow sensor, the calibration device includes a cold plate and a hot plate capable of precise temperature control, the calibrated heat flow sensor and a standard heat flow sensor are placed between the cold and hot plates, and the sensor is calibrated by means of heat conduction calibration. The output of the standard sensor and the sensor under test is collected and calculated by a formula to obtain the sensitivity of the sensor under test. The invention can reduce the error introduced by the blackness coefficient of the black coating layer; avoid the error introduced by the response time difference; the calibration range is wide, and can meet the calibration requirements of heat flux density in different ranges; the equipment is simple, easy to implement, and the calibration cost is low; Calibrate multiple products at the same time to increase calibration efficiency.

The invention provides a calibration device for GIS / GIL partial discharge diagnosis, and the calibration device includes an electromagnet, a metal ball, a support and a control circuit. The electromagnet is arranged in the support, a through hole is arranged in the support, and the metal ball is arranged in the through hole. The control circuit is connected with the electromagnet and controls theelectromagnet to act, and the metal ball reciprocates under the driving of the electromagnet. The invention also provides a calibration method for GIS / GIL partial discharge diagnosis. The calibrationdevice and method provided by the invention can generate ultrasonic signals for calibration with good consistency, is simple in structure and convenient to use, and can meet the calibration requirements of an acoustic emission sensor for partial discharge diagnosis.