Signal processing circuit for slide sleeve position sensor

The utility model provides a signal processing circuit for a slide sleeve position sensor. The signal processing circuit comprises a passive crystal oscillator, an LVDT signal conditioner, a first filtering circuit, a second filtering circuit and a single chip microcomputer. The slide sleeve position sensor is connected with a connector of a main control unit where the signal processing circuit is arranged, and the connector, the first filtering circuit, the second filtering circuit, the LVDT signal conditioner and the single chip microcomputer are all arranged on a circuit board of the main control unit where the signal processing circuit is arranged and are connected. The output end of the passive crystal oscillator is connected with one input end of the LVDT signal conditioner, one pair of output ends of the LVDT signal conditioner are connected with the input end of the slide sleeve position sensor through the first filtering circuit, the output end of the slide sleeve position sensor is connected with the other input end of the LVDT signal conditioner through the second filtering circuit, and the other group of output ends of the LVDT signal conditioner are connected with the single chip microcomputer. The signal processing circuit is simple in structure, is good in product consistency, has generality, is easy to technically popularize and can be produced in volume.