Signal conversion device for double-pin speedometer

• Main Authors: WANG BENLIANG, ZHAO CHENXUAN, LING YUAN, WANG QIANG, LUO YONGSHENG, FENG LIANG, MA HAODAN, WANG YELIU, ZHANG YAN, LIU GONGQING, YANG NIANFENG, WU HONGBO, SHEN ZHULIN, ZHOU XUEDONG
• Format: Patent
• Language: Chinese; English
• Published: 23.03.2016
• Subjects: INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT; MEASURING; MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK; PHYSICS; TESTING

The invention discloses a signal conversion device for a double-pin speedometer, and the device is connected to an LKJ host unit, a rotating speed sensor, and the double-pin speedometer. The device comprises a CPU which is used for receiving input signals of other devices, calculating a value which should be displayed by the double-pin speedometer, and controlling other devices to work normally; a FlaxRay communication interface which is electrically connected with the LKJ host unit outside the device, and is used for reading parameter information needed by the device; a wiring connector which is electrically connected with the rotating speed sensor outside the device, and is used for detecting whether the rotating speed sensor remains be connected to the device or not; an optoelectronic isolator which is electrically connected with the rotating speed sensor outside the device, and is used for receiving a return signal of the rotating speed sensor and carrying out optoelectronic isolation; and a digital-analo