CN2636210Y

CN2636210Y - Cassette projection method photoelectric cell sensor for solar energy automatic tracking system

Info

Publication number: CN2636210Y
Application number: CN 03268886
Authority: CN
Inventors: 于元亮; 黄玉果; 邢哲
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-15
Filing date: 2003-07-15
Publication date: 2004-08-25
Anticipated expiration: 2013-07-15

Abstract

A solar energy automatic tracking system photocell sensor adopting negative holder projection method is provided, which comprises two photocells with the same specification and type, a quadrangular negative holder with gap or small holes on the top center, two leads and a circuit board. The receives of the two photocells are close and linked with the two leads in parallel and welded on a specially made circuit board with size similar to that of the bottom of the quadrangular negative holder, and then put on the bottom of the quadrangular negative holder. Based on the positions that the solar energy shoots on the receives of the two photocells through the gap or small holes on the top center of the quadrangular negative holder, the light reception intensity of the two photocells change correspondingly, thus different or the same electromotive forces are produced correspondingly. After compared with the electromotive forces, the sensor can output different electrical signals. The utility model is mainly applied in the solar energy development and application fields and solves the problem of easy interference of false light when the solar energy automatic tracking system adopts the photocell sensor with receives laid in parallel.

Description

Magazine sciagraphy solar automatic tracking system photoelectric cell sensor

One, application

The utility model relates to a kind of solar automatic tracking system sensor, particularly relates to a kind of magazine sciagraphy solar automatic tracking system photoelectric cell sensor.

One, background technology

Present solar automatic tracking system sensor mainly adopts photoresistance, and in actual applications, it is exactly under the summer high temperature condition that photoresistance has a fatal weakness, and the photoresistance meeting reaches capacity suddenly, to making faulty sensor, can't work.Like this, also just can't allow solar facilities realize having followed the tracks of.

In addition, although adopt with photoelectric cell parallel relatively or back to method overcome above-mentioned deficiency, its resolution when the situation in broad daylight is lower, and disturbed by veiling glare, has increased difficulty to governor circuit.

Three, technical scheme

At the deficiency that present solar automatic tracking system sensor exists, this uses be novel just provide a kind of principle simply, compact conformation, reliable, the cheap novel sensor of tracking.

This novel sensor comprises: the identical photoelectric cell of two joint specifications and models, and a special wiring board, a top has four prism type magazine and two leads in slit.It is characterized in that: two joint photoelectric cell welderings are associated on the wiring board, and make the photronic sensitive surface of this two joint close, by special wiring board the photronic negative or positive electrode of this two joint is tied, and the two poles of the earth connect the back by the outside output signal of lead with lead respectively in addition, the plane of this two joints photoelectric cell sensitive surface composition is put into the bottom of four prism type magazine, sunray is incident upon on the plane of magazine lower curtate by the slit, top of four prism type magazine, according to its position, two photoelectric cells can produce similar and different electromotive force, by wiring board and lead two electromotive force comparative results are in time sent, thereby, give directions governor circuit to realize reliable the tracking.

Four, description of drawings

Fig. 1 is the general structure synoptic diagram of the utility model sensor;

Fig. 2 is that the utility model sensor light battery connects circuit diagram;

The striation that Fig. 3 injects from the slit, top for the utility model sensor drops on the photronic situation of first segment;

The striation that Fig. 4 injects from the slit, top for the utility model sensor drops on the photronic situation of second joint;

The striation that Fig. 5 injects from the slit, top for the utility model sensor drops on the situation in the middle of two photoelectric cells;

Below we are described with reference to the accompanying drawings the principle of work of the utility model sensor:

As accompanying drawing 1, two joint sensitive surfaces are that the photoelectric cell 1,2 of rectangle is formed the large rectangle plane that a centre has the slit, then, they and

lead

4,5 all are linked together by positive pole, weldering is associated on the wiring board 3, by the Copper Foil on the road plate 3 negative pole of photoelectric cell 1,2 is linked together, subsequently, place it in the bottom of magazine 6, by the lead of output, signal is continuously delivered to governor circuit, thereby instruct tracker to realize following the tracks of.

When the sunshine beam that sees through slit, magazine 6 top was on the sensitive surface of photoelectric cell 1, the electromotive force E2 that electromotive force E1 that photoelectric cell 1 produces and photoelectric cell 2 produce compared, E1＞E2, and the electric current in this signal source will flow by the direction shown in the accompanying drawing 3;

When the sunshine beam that sees through slit, magazine 6 top was on the sensitive surface of photoelectric cell 2, the electromotive force E2 that electromotive force E1 that photoelectric cell 1 produces and photoelectric cell 2 produce compared, E1＜E2, and the electric current in this signal source will flow by the direction shown in the accompanying drawing 4;

When in the middle of the sensitive surface of the sunshine beam that sees through slit, magazine 6 top at photoelectric cell 1 and photoelectric cell 2, the electromotive force E2 that electromotive force E1 that photoelectric cell 1 produces and photoelectric cell 2 produce compares, E1=E2, the electric current in this signal source will flow by the electric current that do not have shown in the accompanying drawing 5;

As for two anodal short circuits of photoelectric cell 1,2, signal wire connects output from two negative poles, or adopt the photoelectric cell of other two joints model specification identical non-rectangle sensitive surface, or magazine 6 tops are when adopting situation such as aperture or other shape, its principle Analysis situation and above-mentioned similar does not repeat them here.

Five, effect

By practical application, this sensor output tracking signal is very obvious, even if When the cloud layer of thin layer is arranged on high, can also realize accurate tracking; In addition, Because photocell is in the magazine, veiling glare is not easy to enter, so, its anti-veiling glare Jamming performance is especially excellent, and superiority is very outstanding.

Claims

A kind of magazine sciagraphy solar automatic tracking system photoelectric cell sensor, its feature comprises: two joint identical photoelectric cells of specifications and models (1) and photoelectric cells (2), wiring board (3), lead (4) and lead (5), a crown center has the quadrangular magazine (6) of slit or aperture, the sensitive surface of photoelectric cell (1) and photoelectric cell (2) is close, form a big rectangle or other shape, the center is welded symmetrically and is associated on the wiring board (3), the negative pole of photoelectric cell (1) and photoelectric cell (2) or anodal by wiring board (3) direct connection, another utmost point respectively and lead (4), lead (5) weldering connection, then they are placed on quadrangular magazine (6) bottom, the lead (4) and lead (5) other end are drawn outside the magazine (6).