Angle detecting sensor and control system adopting said sensor for vehicle

Abstract

A sensor for detecting the turning angle of a rotation shaft is separated a certain distance away from the shaft. The sensor comprises a light source for emitting light beams to a graduated color means mounted on the shaft and a light reader for reading the corresponding reflected light beams back from the graduated color means. The graduated color means is a longitudinal sheet of film and attached onto the surface of the shaft in its circumference direction thereby rotating with the shaft synchronously. A serial of color points are formed on the graduated color means along its longitudinal direction. The color points are arranged so as to the reflectivity thereof vary according to the requirements of the sensor.

Description

technical field [0001] The present invention relates to an angle detection sensor and a vehicle control system using the sensor, in particular to a sensor for detecting the rotation angle of a rotating rod by using a color layering device and a pair of light sources and light reading devices, and A vehicle control system that uses the sensor to automatically control the corresponding turn indicator lights of the vehicle to be turned on or off. Background technique [0002] Various devices or systems are known for controlling the turn indicators of a vehicle to indicate whether the vehicle is turning and / or in which direction it is turning. [0003] A class of control systems for vehicle turn indicators can be referred to in the US Patent No. 5,955,944 (hereinafter referred to as the '944 patent), which is specially designed for automobiles, such as cars. Its control system generally includes a steering wheel with a ring handle, a hub coupled to the steering wheel shaft, spo...

AI Technical Summary

Problems solved by technology

[0013] But, because the sensor of above-mentioned prior art is all directly installed on the rotating shaft of steering wheel, this shaft and the long-term rotational motion and vibration of automobile in operation will inevitably make the connection between sensor and shaft Looseness can even cause the sensor to slip or fall off the shaft, which can negatively affect the accuracy of the sensor or even prevent it from functioning properly

Moreover, working in a rotating and vibrating environment for a long time, the sensor is prone to errors or scrapping due to fatigue.

Once the sensors are faulty or obsolete, replacing or repairing them is inconvenient, complicated and expensive, since the sensors are mounted on a shaft connected to the steering wheel

[0014] Moreover, the steering wheel shafts provided by different manufacturers have different diameters, so the entire rotation sensor can only be replaced according to different shafts, which is not only inconvenient, but also increases the corresponding production and / or repair costs

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