CN201903334U

CN201903334U - Direct-type passive laser angular position sensor

Info

Publication number: CN201903334U
Application number: CN2010206473928U
Authority: CN
Inventors: 曹伟龙
Original assignee: Shanghai Hongqu Electronic Technology Co Ltd
Current assignee: Shanghai Hongqu Electronic Technology Co Ltd
Priority date: 2010-12-08
Filing date: 2010-12-08
Publication date: 2011-07-20
Anticipated expiration: 2020-12-08

Abstract

The utility model relates to a sensing device, and particularly to a direct-type passive laser angular position sensor, which directly rotates along with an object to be detected and directly reads the changing information of an angular position, and consists of a laser recognizer, a marking piece, a circuit board and a shell, wherein the laser recognizer, the marking piece and the circuit board are sealed inside the shell, marks are arranged on the marking piece, the laser recognizer reads the marks on the marking piece, the circuit board encodes and decodes and calculates the marks read by the laser recognizer to a formative digital message which can be directly used, the marking piece is fixed on the object to be detected, the laser recognizer is fixed, and a reading port of the laser recognizer is right opposite to the marks on the marking piece. The direct-type passive laser angular position sensor has high precision and can be suitable for being used in different angular position detection fields.

Description

The passive laser of direct-type angle level sensor

Technical field:

The utility model relates to sensing device, particularly a kind of angle level sensor of the vehicles.

Background technology:

The detection of position, angle can be finished with a lot of modes, can be as potentiometer, Hall element, variable condenser, rotary encoder or the like as the sensor that detects the position, angle, these devices have a common type of service: they are to be driven by a link gear, these devices and detected object are rotated synchronously, when rotating, sensor produces the numerical value change of magnetic, electricity, pulse etc.Problem is: 1, and link gear produces the error of precision unavoidably, and degree of accuracy is poor.As detect position, rudder for ship angle and be one and constitute link gear that realistic accuracy is difficult to reach 0.1 degree according to the parallel principle of parallelogram opposite side.2, these devices are not specially for the design of position, angle sensing, and numerical value change linear imperfect influences degree of accuracy.3, zero-bit is adjusted difficulty, and the detection of a class such as the rudder angle of steamer, the direction of automobile are arranged, substantially be not more than 180 degree, but need to determine zero-bit, the existing senser element that is used for the detection of position, angle, all can not 360 except rotary encoder the detections of degree, give the many troubles of definite increase of zero-bit.4, what these devices produced is not direct operable digital code information, is simulation or the pulse signal that needs conversion, the response time that influence is whole.

Summary of the invention:

The purpose of this utility model be invention a kind of direct that rotate together in company with object to be detected, directly read the passive laser of the direct-type angle level sensor of position, angle change information.

The utility model is achieved in that the passive laser of direct-type angle level sensor is made up of laser recognizer, identification piece, circuit board and shell, laser recognizer, identification piece, circuit board seal in the enclosure, arranging on the identification piece and identifying, sign is the mark that the laser recognizer can be discerned, a mark is represented a numerical value, the laser recognizer can read the sign on the identification piece, and the sign that circuit board can read the laser recognizer becomes the format digital code information that can directly use by encoding and decoding and calculating.

It is characterized in that: identification piece is fixed on the object to be detected, and the laser recognizer is fixed, the reading mouthful facing to the sign on the identification piece of laser recognizer.

Wherein, the length that identifies on the identification piece is greater than the length that reads mouth path of process on identification piece.

Wherein, sign comprises position, angle information and check information.

Wherein, sign has plane mark and three-dimensional sign.

Precision of the present utility model is considerably high, goes for position, various angle and detects the occasion use.

Description of drawings:

Accompanying drawing 1 is: the side-looking diagrammatic cross-section of run-in index practical example.

Accompanying drawing 2 is: the side-looking diagrammatic cross-section of rectilinear practical example.

In the accompanying drawings:

10: the laser recognizer, 11: read mouth, 12: connecting line,

20: identification piece, 21: sign, 22: plane mark, 23: three-dimensional sign,

40: circuit board, 41: electronic component,

50: shell, 51: interface,

60: object to be detected, 61: fixing object.

Embodiment:

With reference to Fig. 1, accompanying drawing 1 is the side-looking diagrammatic cross-section of run-in index practical example.

Among the figure, object to be detected 60 rotates, and fixing object 61 is fixed, and shell 50 is connected with the object of fixing 61, and shell 50 is fixed, and it also is fixed on the shell 50 that laser recognizer 10 is connected.

Laser recognizer 10 read mouthfuls 11 facing to the signs 21 on the identification piece 20, identification piece 20 is to be connected on the object to be detected 60, so identification piece 20 and object to be detected 60 simultaneous actions, when object to be detected 60 rotated, identification piece 20 rotated too with object to be detected 60.

The sign 21 of arranging on the identification piece 20, it is the mark that laser recognizer 10 can be discerned, sign 21 has plane mark 22 and three-dimensional sign 23, a mark is represented a numerical value, the arrangement of sign 21 on identification piece 20, be that the direction of rotating with object to be detected 60 is consistent, sign 21 comprises position, angle information and check information, the length of sign 21 is greater than the length that reads mouth 11 path of process on identification piece 20 on the identification piece 20, laser recognizer 10 is by reading mouthful 11 signs 21 that read on the identification piece 20, the information that reads is passed to circuit board 40 by connecting line 12, circuit board 40 is made of electronic component 41, can become the format digital code information that can directly use by encoding and decoding and calculating with laser recognizer 10 from identifying 21 information that read, interface 51 is the parts that insert power supply and pick out information.

Fig. 2 is the side-looking diagrammatic cross-section of rectilinear practical example.

The horizontal practical example of the structure of rectilinear practical example, principle and Fig. 1 is basic identical, the laser recognizer 10 vertical modes of rectilinear practical example that different is read sign 21, identification piece 20 is horizontal being fixed on the object to be detected 60, when object to be detected 60 rotates, identification piece 20 equally rotates, and laser recognizer 10 reads the rotation information of object to be detected 60 from the identification piece 20 that rotates.

Claims

1. the passive laser of direct-type angle level sensor, by laser recognizer (10), identification piece (20), circuit board (40) and shell (50) are formed, laser recognizer (10), identification piece (20), circuit board (40) is sealed in the shell (50), arranging sign (21) on the identification piece (20), sign (21) is the mark that laser recognizer (10) can be discerned, a mark is represented a numerical value, laser recognizer (10) can read the sign (21) on the identification piece (20), the sign (21) that circuit board (40) can read laser recognizer (10) becomes the format digital code information that can directly use by encoding and decoding and calculating, it is characterized in that: identification piece (20) is fixed on the object to be detected (60), laser recognizer (10) is fixed, laser recognizer (10) read mouthful (11) facing to the sign (21) on the identification piece (20).

2. the passive laser of direct-type according to claim 1 angle level sensor is characterized in that: the length that identification piece (20) is gone up sign (21) goes up the length in the path of process greater than reading mouthful (11) at identification piece (20).

3. the passive laser of direct-type according to claim 1 angle level sensor is characterized in that: sign (21) comprises position, angle information and check information.

4. the passive laser of direct-type according to claim 1 angle level sensor is characterized in that: sign (21) has plane mark (22) and three-dimensional sign (23).