CN203275682U - Automatic zeroing device of photoelectric-type sunshine recorder - Google Patents
Automatic zeroing device of photoelectric-type sunshine recorder Download PDFInfo
- Publication number
- CN203275682U CN203275682U CN 201320289995 CN201320289995U CN203275682U CN 203275682 U CN203275682 U CN 203275682U CN 201320289995 CN201320289995 CN 201320289995 CN 201320289995 U CN201320289995 U CN 201320289995U CN 203275682 U CN203275682 U CN 203275682U
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- circuit
- microprocessor
- sunshine recorder
- zeroing
- output terminal
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Abstract
The utility model discloses an automatic zeroing device of a photoelectric-type sunshine recorder, and the utility model mainly solves the problem that the observation accuracy of a sunshine recorder is not high because a sunshine recorder does not have the zeroing device in the prior art. The automatic zeroing device comprises a microprocessor, a zeroing signal generation circuit with the input terminal being connected with the microprocessor, a differential amplification circuit with the input terminal being connected with zeroing signal generation circuit, a signal conditioning circuit with the output terminal being connected with the differential amplification circuit, a photoelectric detection circuit with the output terminal being connected with the signal conditioning circuit, and a signal amplification circuit with the input terminal being connected with the differential amplification circuit and the output terminal being connected with the microprocessor. Based on the above scheme, the automatic zeroing device achieves the purpose that the sunshine recorder can work stably and reliably for a long time through automatic, manual or timed zeroing of the sunshine recorder, so the automatic zeroing device provided by the utility model is high in practical value and popularization value.
Description
Technical field
The utility model relates to a kind of balancing controls, specifically, relates to a kind of photoelectric type sunshine recorder Automatic Zero Set.
Background technology
Refer to that the sun is at the time number of an actual irradiation in ground sunshine, length and the agricultural production at sunshine are closely related, so project that the sunshine time meteorological platform that is all must be observed, in a preset time, sunshine time refers to that the direct irradiance of the sun meets or exceeds the temporal summation of 120 watts/square metre, take hour as unit, get a decimal.
In present domestic meteorological observation business, the main dark-tube sunshine recorder that adopts is realized observation at sunshine by manual type, though comparatively ripe photoelectric type sunshine recorder is arranged, there is no Automatic Zero Set abroad, thereby circuit function is single, and can have a strong impact on accuracy of observation in the business use for a long time.
The utility model content
The purpose of this utility model is to provide a kind of photoelectric type sunshine recorder Automatic Zero Set, mainly solve exist in prior art because sunshine recorder does not have balancing controls, make the not accurate enough problem of its accuracy of observation.
To achieve these goals, the technical solution adopted in the utility model is as follows:
Photoelectric type sunshine recorder Automatic Zero Set, comprise microprocessor, the zeroing signal generating circuit that input end is connected with microprocessor, the differential amplifier circuit that input end is connected with the zeroing signal generating circuit, the signal conditioning circuit that output terminal is connected with differential amplifier circuit, the photoelectric detective circuit that output terminal is connected with signal conditioning circuit, the signal amplification circuit that input end is connected with differential amplifier circuit, output terminal is connected with microprocessor.
Consider actual demand, be connected with the A/D change-over circuit between described signal amplification circuit and little processing, this A/D change-over circuit one end is connected with the output terminal of signal amplification circuit, the other end is connected with microprocessor is two-way.
Further, described microprocessor is connected with clock circuit.
As preferably, described microprocessor is Low Power Embedded Microprocessor.
Compared with prior art, the utlity model has following beneficial effect:
(1) in the utility model, microprocessor is monitoring when there is no illumination the non-vanishing zeroing signal generating circuit of can controlling of signal conditioning circuit Output rusults to differential amplifier circuit output one zeroing signal, after processing, realizes differential amplifier circuit zero input and zero output, namely realize zeroing, global design is comparatively ingenious, and simple structure, cost performance is higher, is fit to large-scale promotion application.
(2) also be provided with clock circuit in the utility model, by using this clock circuit to system clock of system, can realize neatly regularly zeroing, use more realistic demand.
Description of drawings
Fig. 1 is system chart of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, and embodiment of the present utility model includes but not limited to the following example.
Embodiment
for solve exist in prior art because sunshine recorder does not have balancing controls, make the not accurate enough problem of its accuracy of observation, as shown in Figure 1, the utility model discloses a kind of photoelectric type sunshine recorder Automatic Zero Set, it comprises: photoelectric detective circuit, the signal conditioning circuit that input end is connected with photoelectric detective circuit, the differential amplifier circuit that input end is connected with signal conditioning circuit, the signal amplification circuit that input end is connected with differential amplifier circuit, the A/D change-over circuit that input end is connected with signal amplification circuit, with the two-way microprocessor that is connected of A/D change-over circuit, the clock circuit that output terminal is connected with microprocessor, and input end is connected with microprocessor, the zeroing signal generating circuit that output terminal is connected with differential amplifier circuit, wherein, the preferred Low Power Embedded Microprocessor of microprocessor.
Working method of the present utility model is as follows: when there is no sunshine, the signal of photoelectric detective circuit output should be output as zero later through signal conditioning circuit, but because the actual outputs of factor such as device aging are mostly also non-vanishing, this moment, microprocessor detected the signal of this non-zero, just control zeroing signal of zeroing signal generating circuit output, process through differential amplifier circuit, thereby realize zero input and zero output, wherein, clock circuit is mainly to system clock of system, thereby realizes regularly zeroing.
In the utility model, each circuit and device blocks are prior art, just more do not speak more bright at this.
According to above-described embodiment, just can realize well the utility model.
Claims (4)
1. photoelectric type sunshine recorder Automatic Zero Set, it is characterized in that, comprise microprocessor, the zeroing signal generating circuit that input end is connected with microprocessor, the differential amplifier circuit that input end is connected with the zeroing signal generating circuit, the signal conditioning circuit that output terminal is connected with differential amplifier circuit, the photoelectric detective circuit that output terminal is connected with signal conditioning circuit, the signal amplification circuit that input end is connected with differential amplifier circuit, output terminal is connected with microprocessor.
2. photoelectric type sunshine recorder Automatic Zero Set according to claim 1, it is characterized in that, be connected with the A/D change-over circuit between described signal amplification circuit and little processing, this A/D change-over circuit one end is connected with the output terminal of signal amplification circuit, the other end is connected with microprocessor is two-way.
3. photoelectric type sunshine recorder Automatic Zero Set according to claim 2, is characterized in that, described microprocessor is connected with clock circuit.
4. photoelectric type sunshine recorder Automatic Zero Set according to claim 3, is characterized in that, described microprocessor is Low Power Embedded Microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289995 CN203275682U (en) | 2013-05-24 | 2013-05-24 | Automatic zeroing device of photoelectric-type sunshine recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289995 CN203275682U (en) | 2013-05-24 | 2013-05-24 | Automatic zeroing device of photoelectric-type sunshine recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203275682U true CN203275682U (en) | 2013-11-06 |
Family
ID=49506058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320289995 Expired - Fee Related CN203275682U (en) | 2013-05-24 | 2013-05-24 | Automatic zeroing device of photoelectric-type sunshine recorder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203275682U (en) |
-
2013
- 2013-05-24 CN CN 201320289995 patent/CN203275682U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20160524 |