在机械设备中,越来越多地采用油压和气动装置,并成为设备的重要组成部分。然而,因油压和气动装置的故障而影响整个设备正常工作,也为数不小。因此,很有必要采用一种简便方法来检出油压和气动装置的故障。在机械设备的油压和气动装置中,电磁阀被大量采用,在故障方面,涉及电磁阀的毛病也就占了很大的比率。这里介绍一种监视电磁阀线圈激 In machinery and equipment, more and more use of hydraulic and pneumatic devices, and become an important part of the equipment. However, due to the failure of the hydraulic and pneumatic devices affect the normal work of the entire equipment, is also not a small number. Therefore, it is necessary to use a simple method to detect hydraulic and pneumatic device failure. Solenoid valves are widely used in the hydraulic and pneumatic installations of machinery and equipment. In the case of faults, problems involving solenoid valves also account for a large proportion. Here to introduce a monitoring solenoid valve coil excited