Device and method for judging and detecting signals of rotational speed sensor
A speed sensor and signal technology, applied in the direction of measuring devices, speed/acceleration/shock measurement equipment testing/calibration, instruments, etc., can solve problems such as difficult to determine the specific cause of the fault, loss of speed sensor signal, etc.
Inactive Publication Date: 2010-01-13
SAIC MOTOR
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is to provide a device and method for judging and detecting the signal of the rotational speed sensor, so as to solve the problem in the prior art that the signal of the rotational speed sensor is lost and it is difficult to judge the specific cause of the failure
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[0018] The specific implementation steps of the present invention will be further described below in conjunction with the accompanying drawings.
[0019] Please refer to figure 2 As shown, the device for judging and detecting the signal of the rotational speed sensor includes an engine controller 1, a rotational speed sensor body 3 connected to the engine controller 1 through the plug group 2, and a second sensor located at the connection between the engine controller 1 and the plug group 2. A measuring point 4, the plug group 2 includes one end connected to the signal output end of the speed sensor body 3, and a signal connection plug 21 connected to the engine controller 1 at the other end; the speed sensor body 3 provides the engine controller 1 with engine Speed and crankshaft position signals.
[0020] The device further includes a signal isolation device 9 connected to the signal output end of the rotational speed sensor body 3 at one end, and a signal isolation devi...
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The invention relates to a device for judging and detecting signals of a rotational speed sensor, which comprises an engine controller, a rotational speed sensor body connected with the engine controller through a plug group and a first measuring point positioned at the junction of the engine controller and the plug group, wherein, the plug group comprises a signal connection plug, one end of the signal connection plug is connected with a signal output end of the rotational speed sensor body, the other end is connected with the engine controller, and the device further comprises a signal isolation device and a second measuring point, one end of the signal isolation device is connected with the signal output end of the rotational speed sensor body, the other end is connected with the signal connection plug, and the second measuring point is positioned between the signal isolation device and the signal output end of the rotational speed sensor body. The device can effectively judge whether signal loss is caused by no signal output of the rotational speed sensor body or plug connection failure or a problem of the engine controller according to signal detection of the measuring points, thereby rapidly judging specific reasons, carrying out rectification in time and saving detection time.
Description
technical field [0001] The invention relates to the field of engine speed sensors with Hall devices as the core, in particular to a device and method for judging and detecting signals of the speed sensor. Background technique [0002] The engine speed sensor (Hall effect Sensor) is installed on the left side of the engine cylinder block near the flywheel. The signal trigger wheel of the sensor is installed between the flywheel and the crankshaft, and rotates together with the crankshaft. The engine speed sensor is a Hall sensor used to accurately detect the crankshaft's angular position and engine speed. The engine speed signal trigger wheel has a wide toothed belt, which together with the signal trigger wheel on the camshaft triggers the hall sensor on the crankshaft and camshaft respectively, and the signal is used by the engine controller (EMS ECU) to identify the engine cylinder Phase, and then to accurately control the ignition and fuel injection of a certain cylinder...
Claims
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IPC IPC(8): G01P21/02G01R31/04G01M15/00
Inventor 张弘
Owner SAIC MOTOR