Indirect passive laser angle position sensor
A sensor and indirect technology, applied in converting sensor output, using optical devices to transmit sensing components, instruments, etc., can solve problems such as poor accuracy, difficulty reaching 0.1 degrees, and affecting response time.
Inactive Publication Date: 2012-05-30
SHANGHAI HONGQU ELECTRONICS TECH
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Problems solved by technology
The problem is: 1. The linkage mechanism will inevitably produce accuracy errors, and the accuracy is poor
For example, the detection of the rudder angle is a linkage mechanism based on the principle that the opposite sides of the parallelogram are parallel, and the actual accuracy is difficult to reach 0.1 degrees.
2. These devices are not specially designed for angular position sensing, and the linearity of numerical changes is not perfect, which affects accuracy
3. It is difficult to adjust the zero position. There is a type of detection such as the rudder angle of the ship and the direction of the car, which are basically not greater than 180 degrees, but the zero position needs to be determined. The existing sensor devices for angular position detection, except for the rotary encoder Cannot detect 360 degrees, which adds a lot of trouble to the determination of the zero position
4. The digital information generated by these devices is not directly usable, but an analog or pulse signal that needs to be converted, which affects the overall response time
Method used
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[0019] refer to figure 1 , with figure 1 It is a side view cross-sectional schematic diagram of a parallel practice example.
[0020] In the figure, the detected object 60 is rotating, the fixed object 61 is fixed, the shell 50 of the main body 52 is connected with the fixed object 61, the shell 50 is fixed, and the laser identifier 10 is connected to the shell 50 It is also fixed.
[0021] The reading port 11 of the laser identifier 10 is facing the mark 21 on the identification part 20, and the identification part 20 is connected on the passive part 32 of the indirect part 30, so the identification part 20 and the passive part 32 act synchronously, and the passive part 32 There is a rack 33 meshing with the active part 31 to directly rotate synchronously. The active part 31 is connected to the detected object 60. When the detected object 60 rotates, the passive part 32 rotates the same, and the identification part 20 and the detected object 60 also rotate. Turn the same. ...
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An indirect passive laser angle position sensor relates to an angle position sensor. The angle position sensor of the invention is indirectly rotated following a detected object and directly read angle position change information. The sensor is formed by an indirect piece and a main body. The main body is formed by a laser recognizer, an identification piece, a circuit board and a shell. The laser recognizer, the identification piece and the circuit board are sealed in the shell. Identifications are arranged on the identification piece. The circuit board codes, decodes and calculates the identification read by the laser recognizer so that the identification can become formatting digital information which can be directly used. The indirect piece is formed by a driving link and a passive link. The driving link and the passive link are equipped with corresponding racks. The identification piece is fixed on the passive link. The driving link is fixed on the detected object. The laser recognizer is fixed. A reading port of the laser recognizer is directed at the identification on the identification piece. The sensor of the invention has high precision and can be used for various kinds of angle position detection occasions.
Description
Technical field: [0001] The invention relates to a sensing device, in particular to an angle position sensor of a vehicle. Background technique: [0002] Angle detection can be done in many ways, such as potentiometers, Hall elements, variable capacitors, rotary encoders, etc. can be used as sensors for detecting angles, these devices have a common form of use: they are composed of Driven by a linkage mechanism, these devices rotate synchronously with the detection object. When rotating, the sensor produces magnetic, electric, pulse and other numerical changes. The problems are: 1. The linkage mechanism will inevitably produce errors in precision, and the precision is poor. For example, the detection of the rudder angle is a linkage mechanism based on the principle that the opposite sides of a parallelogram are parallel, and the actual accuracy is difficult to reach 0.1 degrees. 2. These devices are not specially designed for angular position sensing, and the linearity of ...
Claims
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Login to View More IPC IPC(8): G01D5/26G06K7/10
CPCG01B11/26G01D5/347B63H25/36
Inventor 曹伟龙
Owner SHANGHAI HONGQU ELECTRONICS TECH