CN204301857U - Light power meter - Google Patents

Light power meter Download PDF

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Publication number
CN204301857U
CN204301857U CN201420866017.0U CN201420866017U CN204301857U CN 204301857 U CN204301857 U CN 204301857U CN 201420866017 U CN201420866017 U CN 201420866017U CN 204301857 U CN204301857 U CN 204301857U
Authority
CN
China
Prior art keywords
circuit
radio frequency
power meter
light power
chip microcomputer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420866017.0U
Other languages
Chinese (zh)
Inventor
江明珠
徐庆富
李清卉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUILIN MYAO ELECTRONIC TECHNOLOGY Co Ltd
Original Assignee
GUILIN MYAO ELECTRONIC TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GUILIN MYAO ELECTRONIC TECHNOLOGY Co Ltd filed Critical GUILIN MYAO ELECTRONIC TECHNOLOGY Co Ltd
Priority to CN201420866017.0U priority Critical patent/CN204301857U/en
Application granted granted Critical
Publication of CN204301857U publication Critical patent/CN204301857U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of light power meter, comprise the photoelectric switching circuit, pre-amplification circuit, low-pass filter circuit, analog to digital conversion circuit and the single-chip microcomputer that are connected successively, and the usb circuit to be connected with the output terminal of single-chip microcomputer, also comprise the radio frequency unit be connected with the output terminal of single-chip microcomputer, this radio frequency unit is RF radio frequency unit, it comprises radio frequency chip, TX low-pass filter circuit and antenna, and one end of TX filtering circuit is connected with the TX pin of radio frequency chip, and the other end is connected with antenna.The utility model utilizes RF radio frequency unit to realize the wireless transmission of light power meter measured value, and more convenient testing at ordinary times, improves work efficiency; And temperature control circuit can be lowered the temperature process timely to each module, avoids the measuring error brought because temperature is too high, improves the degree of accuracy measured.

Description

Light power meter
Technical field
The utility model relates to optical communication fields of measurement, is specifically related to a kind of light power meter.
Background technology
Along with developing rapidly of Fibre Optical Communication Technology, optical fiber test equipment also along with constantly growing up, a kind of reliable, precision is high, the convenient surveying instrument exported for light transmission fiber detection and measure particularly important.Light power meter (optical power meter) is the instrument for measuring absolute light power or the luminous power relative loss factor by one section of optical fiber, can be used for main line laying, plant maintenance etc. in communication engineering, optical signal transmission decay and loss can be judged.There is the single problem of output port in existing light power meter, can not meet application demand.As the Chinese utility model patent application " Portable USB light power meter " that publication number is CN102252752A, it comprises photo-detector, the power conversion of the light signal detected is current signal by photo-detector, then after current/voltage converter circuit, voltage signal is changed into, after voltage amplifier circuit amplifies, input single-chip microcomputer again and become digital quantity, by USB, described digital quantity is input to computing machine.
Utility model content
Technical problem to be solved in the utility model is to provide a kind ofly has multiple output port, light power meter that measuring accuracy is high.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
Light power meter, comprise the photoelectric switching circuit, pre-amplification circuit, low-pass filter circuit, analog to digital conversion circuit and the single-chip microcomputer that are connected successively, and the usb circuit to be connected with the output terminal of single-chip microcomputer, also comprise the radio frequency unit be connected with the output terminal of single-chip microcomputer, this radio frequency unit is RF radio frequency unit, it comprises radio frequency chip, TX low-pass filter circuit and antenna, and one end of TX filtering circuit is connected with the TX pin of radio frequency chip, and the other end is connected with antenna.The luminous power that single-chip microcomputer can export by RF radio frequency unit in corresponding equipment, as computing machine etc., do further process by antenna transmission, and the luminous power that single-chip microcomputer is exported can wireless transmission, does not need to connect up, work of being more convenient for.
In order to cooling process can be carried out to light power meter, reduce temperature noise, improve measuring accuracy, such scheme can also comprise temperature control circuit, temperature control circuit comprises the temperature sensor for gathering light power meter temperature and the refrigeratory for lowering the temperature to light power meter, and the output signal of temperature sensor inputs to single-chip microcomputer and by the switch of Single-chip Controlling refrigeratory.
Such scheme preferably can also comprise frequency signal controller and video interface circuit, and the output terminal of described single-chip microcomputer is connected with video interface circuit through video signal controller.Video signal controller converts the luminous power that single-chip microcomputer exports to vision signal, and exports video display apparatus to through video interface circuit.
In order to measure more wavelength, such scheme can also comprise video identification circuit, and analog-digital conversion circuit as described is connected with the input end of single-chip microcomputer through video identification circuit.
Such scheme is preferred, and described low-pass filter circuit is trap ellipse function filter circuit.
Compared with prior art, the utility model utilizes RF radio frequency unit to realize the wireless transmission of light power meter measured value, and more convenient testing at ordinary times, improves work efficiency; And temperature control circuit can be lowered the temperature process timely to each module, avoids the measuring error brought because temperature is too high, improves the degree of accuracy measured; Video signal controller can convert luminous power to vision signal in addition, and exports video display apparatus to through video interface circuit, for panel discussion, watches more convenient, direct.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Embodiment
As shown in Figure 1, for the structured flowchart of a kind of light power meter of the utility model, comprise the photoelectric switching circuit, pre-amplification circuit, low-pass filter circuit, analog to digital conversion circuit and the single-chip microcomputer that are connected successively, and the usb circuit to be connected with the output terminal of single-chip microcomputer, also comprise the radio frequency unit be connected with the output terminal of single-chip microcomputer.Described low-pass filter circuit is trap ellipse function filter circuit.Described radio frequency unit is RF radio frequency unit, and it comprises radio frequency chip, TX low-pass filter circuit and antenna, and one end of TX filtering circuit is connected with the TX pin of radio frequency chip, and the other end is connected with antenna.Light signal is converted to corresponding current signal by photoelectric switching circuit, corresponding current signal is converted to corresponding voltage signal by pre-amplification circuit, corresponding voltage signal extracts direct current signal by low-pass filter circuit, direct current signal obtains digital signal by analog to digital conversion circuit and is delivered to single-chip microcomputer, by single-chip microcomputer Output optical power value.Single-chip microcomputer is connected with external unit through RF radio frequency unit, carries out more complicated calculating by external unit, to reduce the processing pressure of single-chip microcomputer, extends its serviceable life.
The utility model is also provided with video interface, specifically comprise frequency signal control, video interface circuit and video identification circuit, analog-digital conversion circuit as described is connected with the input end of single-chip microcomputer through video identification circuit, and the output terminal of described single-chip microcomputer is connected with video interface circuit through video signal controller.Single-chip microcomputer calculates optical power value, and identifies the frequency of light source, then converts optical power value to vision signal through video signal controller, is connected with external video equipment by video interface circuit.
In order to cooling process can be carried out to each parts of light power meter in time, the utility model also comprises temperature control circuit, this temperature control circuit comprises the temperature sensor for gathering light power meter temperature and the refrigeratory for lowering the temperature to light power meter, and the output signal of temperature sensor inputs to single-chip microcomputer and by the switch of Single-chip Controlling refrigeratory.The temperature of temperature sensor Real-Time Monitoring light power meter, and be delivered to single-chip microcomputer, the temperature value received and inner setting compare by single-chip microcomputer, when higher than inside application value, open refrigeratory and carry out cooling process to light power meter.
Just the preferred embodiment of the utility model is described in detail by reference to the accompanying drawings above; not limit practical range of the present utility model with this; all equivalence changes done according to principle of the present utility model, structure and structure, all should be covered by protection domain of the present utility model.

Claims (5)

1. light power meter, comprise the photoelectric switching circuit, pre-amplification circuit, low-pass filter circuit, analog to digital conversion circuit and the single-chip microcomputer that are connected successively, and the usb circuit to be connected with the output terminal of single-chip microcomputer, it is characterized in that: also comprise the radio frequency unit be connected with the output terminal of single-chip microcomputer, this radio frequency unit is RF radio frequency unit, it comprises radio frequency chip, TX low-pass filter circuit and antenna, and one end of TX filtering circuit is connected with the TX pin of radio frequency chip, and the other end is connected with antenna.
2. light power meter according to claim 1, it is characterized in that: also comprise temperature control circuit, temperature control circuit comprises the temperature sensor for gathering light power meter temperature and the refrigeratory for lowering the temperature to light power meter, and the output signal of temperature sensor inputs to single-chip microcomputer and by the switch of Single-chip Controlling refrigeratory.
3. light power meter according to claim 1 and 2, is characterized in that: also comprise frequency signal controller and video interface circuit, and the output terminal of described single-chip microcomputer is connected with video interface circuit through video signal controller.
4. light power meter according to claim 3, is characterized in that: also comprise video identification circuit, and analog-digital conversion circuit as described is connected with the input end of single-chip microcomputer through video identification circuit.
5. light power meter according to claim 1, is characterized in that: described low-pass filter circuit is trap ellipse function filter circuit.
CN201420866017.0U 2014-12-31 2014-12-31 Light power meter Expired - Fee Related CN204301857U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420866017.0U CN204301857U (en) 2014-12-31 2014-12-31 Light power meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420866017.0U CN204301857U (en) 2014-12-31 2014-12-31 Light power meter

Publications (1)

Publication Number Publication Date
CN204301857U true CN204301857U (en) 2015-04-29

Family

ID=53107390

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420866017.0U Expired - Fee Related CN204301857U (en) 2014-12-31 2014-12-31 Light power meter

Country Status (1)

Country Link
CN (1) CN204301857U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104501947A (en) * 2014-12-31 2015-04-08 桂林铭瑶电子科技有限公司 Optical power meter
CN105300516A (en) * 2015-10-30 2016-02-03 苏州优康通信设备有限公司 Handheld optical multimeter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104501947A (en) * 2014-12-31 2015-04-08 桂林铭瑶电子科技有限公司 Optical power meter
CN105300516A (en) * 2015-10-30 2016-02-03 苏州优康通信设备有限公司 Handheld optical multimeter

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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

Granted publication date: 20150429

Termination date: 20151231

EXPY Termination of patent right or utility model