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Position detecting apparatus

A technology of detection device and braking device, which is applied in measurement device, transmission of sensing member by optical device, transmission of sensor member by electric/magnetic device, etc. problem, to achieve the effect of small volume and volume reduction

Inactive Publication Date: 2010-09-22
GLOBAL INNOVATION AGGREGATORS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventor found in the process of research and practice of the prior art that the position template adopts a design with a two-turn structure and has a larger volume, which makes the detection device larger in size, so that the product cannot be made small and compact

Method used

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  • Position detecting apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, a position detection device provided by the embodiment of the present invention includes a position template and a sensor assembly;

[0026] The position template includes a comb structure composed of cyclically changing crenels and teeth;

[0027] The above description of crenels and teeth is to illustrate the change of state more vividly, and should not be understood as crenels and teeth in a purely physical sense. Crenels and teeth are expressed in two different states, such as whether they are reflective, whether they are light-transmitting, or magnetic. Two poles, etc.; the comb-shaped structure composed of the cyclically changing crenels and teeth should be understood as a structure that can detect cyclically changing states. In the subsequent embodiments, the details will be described in detail with the examples of whether it reflects light, whether it transmits light, and whether it is magnetic.

[0028] Wherein, the above-mentioned comb-like stru...

Embodiment 2

[0050] Embodiment two, as an example of embodiment one, please refer to Figure 1 to Figure 3 , with a comb-like structure as a circle, a tooth is removed at the A end of the working area to form a long crenel, and a crenel is filled at the B end to form a long tooth, using three transmissive optical sensors S[0], S[1] , S[2] is an example of the position detection device of the sensor assembly, and the position detection device in Embodiment 1 is described in detail; the above-mentioned comb structure may include: teeth 202, crenels 203; wherein the teeth 202 and crenels 203 are supported board 201;

[0051] At this time, the phase difference between S[0] and S[1], S[1] and S[2] is plus or minus 60 degrees or plus or minus 120 degrees, and an error within 60 degrees is allowed; a negative phase The sum of the degree difference and 360 degrees can be converted into a positive phase difference; plus or minus 60 degrees, plus or minus 120 degrees is equivalent to 60 degrees, 12...

Embodiment 3

[0056] Embodiment three, please refer to Figure 5 and Figure 6 , as another example of Embodiment 1, the comb-like structure of the position template can be: a comb-like structure formed by printing black bars on a transparent material, the comb-like structure includes black bars 502 and transparent parts 503; the comb-like structure is formed on the transparent support On the board 501; the sensors can be reflective optical sensors, S[0], S[1] and S[2]. see Figure 7 , the comb structure of the position template can be: a comb structure formed by printing black and white patterns on a white opaque material, the sensor can be a reflective optical sensor, and the teeth 702 can reflect light. It can be understood that the comb-like structure of the position template may also be: a magnetic comb-like structure formed by alternating south poles and north poles. How to use this device can refer to the second embodiment.

[0057] The position detection device provided in the a...

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Abstract

The invention discloses a position detection device, comprising a position template and a sensor assembly. The position template comprises a comb-shaped structure made by a crenellation which can be changed cyclically and teeth. The comb-shaped structure comprises a working area and a banned area. One end of the working area is provided with an absolute reference mark. Two ends of the banned areaare provided with brake devices. The sensor assembly comprises at least three sensors. The sensors can be moved in the working area. The phase difference between the two neighboring sensors is the linear function of the reciprocal value of the number of the sensors. The device has the following beneficial effects: the design of the position template which uses a cyclical change comb-shaped structure has a smaller volume than the design which uses a two-circle structure. The volume of the detection device can be reduced and the smaller and compact products can be produced.

Description

technical field [0001] The invention relates to the technical field of position detection, in particular to a position detection device. Background technique [0002] In real life, position detection technology is needed in many places, such as electric curtains, electric curtains, electric windows, electric toys, electric robots, PTZ cameras (Pan, horizontal rotation / Tilt, up and down rotation / Zoom, zoom), electric clouds Taiwan and so on. [0003] The position detection device includes a position template and a sensor assembly; the position template is composed of two inner and outer circles: the inner circle consists of a crenel and a tooth, and its state jump represents the absolute reference position; the outer circle is a cyclically changing comb crenel and teeth, Represents the relative position; the sensor assembly consists of 3 sensors, one of which is used to detect the jump of the state of the inner ring as an absolute position; the other two sensors output pulse...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/26G01D5/12
CPCG01D5/34715G01D5/244
Inventor 赵光耀
Owner GLOBAL INNOVATION AGGREGATORS LLC