CN2194517Y

CN2194517Y - Photo-electricity converter

Info

Publication number: CN2194517Y
Application number: CN 94205499
Authority: CN
Inventors: 王群
Original assignee: MEASURING AND SURVEYING TECHNOLOGY INST JILIN PROV
Current assignee: MEASURING AND SURVEYING TECHNOLOGY INST JILIN PROV
Priority date: 1994-03-27
Filing date: 1994-03-27
Publication date: 1995-04-12
Anticipated expiration: 2004-03-27

Abstract

The utility model relates to a photo-electricity converter, which belongs to the testing instruments of electric energy meters. The utility model is composed of a housing, an optical path and a circuit installed in the housing, upright support bars and lateral support bars connected to the housing, in the housing a double-lenticular lens is installed at the front side of a light source lamp, the double-lenticular lens corresponds to the light outlet hole of the housing, a photoresistor to receive the parallel reflecting light is arranged behind the light inlet hole of the housing, and the circuit of a photo-electricity converter is composed of a photoresistor, an operational amplifier, a single-chip computer, an LED, a light source lamp and resistors. The photo-electricity converter has the advantages of strong interference immunity, strong resolution performance, easy adjustment, little error and high detection efficiency.

Description

Photo-electricity converter

The utility model belongs to electric energy meter detecting instrument class.

Existing detection to electric energy meter is to adopt a standard electric energy meter to match with a photoelectric transformer (photometer head) to detect, by standard electric energy meter and tested electric energy meter the compare degree of accuracy and the error of definite tested electric energy meter.Existing photoelectric transformer is by housing and be contained in light path and circuit in the housing, be connected that pin bar on the housing and cross support arm form.The light emitting diode that a light well and a light hole and a display circuit are arranged on the housing; Light channel structure in the housing is: the directional light that light source penetrates penetrates optically focused through biconvex lens, optically focused from the rotating disk that light hole penetrates, optically focused is mapped to detected electric energy meter of housing, reflected light is mapped to optically focused on another biconvex lens through the incidence hole of housing and is mapped in the photoresistance the circuit; Power by light makes circuit produce electric signal, compares with the standard electric energy, reaches the purpose that detects tested electric energy meter.The problem of this light channel structure is: what photoresistance received is focused light, cause to regulate difficulty in the testing process, and poor anti jamming capability, detection efficiency is low, and error is big.Circuit antijamming capability and resolution characteristic in the housing are also lower.

The purpose of this utility model is: provide a kind of anti-interference strong with resolution characteristic, detect error photoelectric transformer little, that efficient is high.

Technical measures of the present utility model are: based on existing by housing and be contained in light path and circuit in the housing, be connected the photoelectric transformer that pin bar on the housing and cross support arm are formed; There is a biconvex lens illuminator front side in housing, and biconvex lens is the quick resistance of accepting reflected in parallel light corresponding to the light hole of housing in the incidence hole back of housing; The circuit of photoelectric transformer is made up of photoresistance, operational amplifier, single-chip microcomputer, light emitting diode, illuminator, resistance.

Photoelectric transformer of the present utility model because light path finally is to be radiated in the photoresistance with directional light, adopts the microcomputer circuit that operational amplifier and single-chip microcomputer are arranged in the circuit; Make light path reduce resolution characteristic, make circuit improve resolution characteristic and antijamming capability, detect the good effect that error improves detection efficiency thereby have to reduce.

Fig. 1 is a structural representation of the present utility model; Fig. 2 is a side view.

Fig. 3 is the light path synoptic diagram; Fig. 4 is a circuit diagram.

4 is housings among the figure, be connected with pin bar 3 and cross support arm 2 on the housing, in order to adapt to connection to detected electric energy meter, pin bar 3 and cross support arm 2 are adopted length-adjustable structure respectively, can adopt the thickness pipe to insert the solid structure in jackscrew top mutually, also can adopt two ends is that screw rod is twisted the structure that connects mutually with the pipe of screw; Pin bar 3 fixes by jackscrew 1 with cross support arm 2.Light hole 5 and incidence hole 12 are arranged on housing 4; Light path in the housing 4 is: in illuminator 8 front sides a biconvex lens 7 is arranged, biconvex lens 7 is photoresistance 11 corresponding to light hole 5 in incidence hole 12 back of housing 4.The directional light that light source 8 penetrates, through biconvex lens 7 optically focused, optically focused is mapped in the photoresistance 11 through the incidence hole 12 of housing 4 through the directional light of tested electric energy meter rotating disk 6 bounce backs, because the colour code above the rotating disk 6 garden Zhou Yuqi is to ray refraction degree difference, cause photoresistance 11 light intensity of accepting also different, make and produce the pulse (see figure 3) in the circuit.The circuit of photoelectric transformer adopts by photoresistance 11, operational amplifier 13, single-chip microcomputer 9, light emitting diode 10, illuminator 8, sampling and is worth resistance R 1 partially and R2 forms.The single-chip microcomputer 9 that adopts operational amplifier in the circuit, has MICROCOMPUTER PROCESSING and address latch and memory under program function is handled the pulse in the circuit.The sort circuit structure has anti-interference and the strong characteristics of resolution performance; Single-chip microcomputer 9 in the circuit can adopt 8031, Z80,8096, models such as 8751; Single-chip microcomputer 9 also can not be contained in the housing 4, and singly places outside the housing.The extension line of circuit is drawn through standpipe 3 and is combined in 3-phase plug and be connected with standard electric energy meter.

Claims

1, a kind of photoelectric transformer by housing and be contained in light path and circuit in the housing, be connected that pin bar on the housing and cross support arm form, is characterized in that:

Light path in a, the housing is: a biconvex lens is arranged in the illuminator front side, and biconvex lens is the photoresistance of accepting reflected in parallel light corresponding to the light hole of housing in the incidence hole back of housing;

Circuit in b, the housing is made up of photoresistance, operational amplifier, single-chip microcomputer, light emitting diode, illuminator, resistance.