CN105278383A - Modular multi-channel optical power meter and realization method thereof - Google Patents
Modular multi-channel optical power meter and realization method thereof Download PDFInfo
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- CN105278383A CN105278383A CN201510742914.XA CN201510742914A CN105278383A CN 105278383 A CN105278383 A CN 105278383A CN 201510742914 A CN201510742914 A CN 201510742914A CN 105278383 A CN105278383 A CN 105278383A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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Abstract
The invention discloses a modular multi-channel optical power meter and a realization method thereof. The modular multi-channel optical power meter comprises a principal computer and 2<n> OPM (optical power meter) modules, wherein n is a positive integer. The principal computer comprises a clock signal CLK module, a function state control enabling module, a data/instruction module, and a feedback module, and all the modules of the optical power meter are independent of one another and can be replaced through plug and pull at any time. The measured value of each channel can be read and displayed at any time. Data acquisition, SRAM and E2ROM of the modules can be controlled individually or simultaneously. According to the invention, the operation on the 2<n> OPM modules can be controlled with only four groups of control wires, wherein n is the number of state control wires S. According to the invention, the multi-channel optical power meter can be expanded, and lower product cost and higher efficiency are achieved.
Description
Technical field
The present invention relates to a kind of modular multichannel light power meter and its implementation.
Background technology
Light power meter is a kind of surveying instrument indispensable in optical fiber communication, and in the isoparametric measurement of optical device, optical fiber and optical cable, optical fiber construction and maintenance, optical fiber communication is all widely used in ensureing.Light power meter conventional mostly at present is single channel or binary channels, and its passage is fixed, non-exchange; Existing Multichannel optical power meter mostly number of channels is fixed, and can not arbitrarily expand and change module.Sometimes need the light power meter of multiple stage different parameters just can complete test in actual use procedure, bring inconvenience to user, be unfavorable for the measurement of parameter and the maintenance of optical fiber link.
Tradition Multichannel optical power meter generally realizes based on cmos analog switch or multiplexer, the break-make of each road signal all needs MCU to be controlled separately by I/O port, the quantity of acquisition channel is by I/O port restricted number, and increasing passage needs the design re-starting hardware circuit, and extendability is poor.In addition, current Multichannel optical power meter many employings CAN realizes multichannel technology, system adopts primary and secondary structure, each acquisition channel and mainboard exchange data by CAN, in CAN, equipment does not have fixing address, but by coming identification and exchange information with the packet of unique ID.Realize CAN communication and need special CAN controller, and design CAN circuit, CAN communication protocol, only in strict accordance with the transmission structure of frame, could correctly be received by node and send.
Summary of the invention
The present invention is in order to solve the problem, propose a kind of modular multichannel light power meter and its implementation, the present invention can solve traditional Multichannel optical power meter acquisition channel by I/O port restricted number, efficiency is low, the problem that extendability is poor, realize each module of light power meter separate, replacing can be plugged at any time; Can read in moment and show the measured value of each passage; Can control individually or simultaneously the data acquisition of each module, SRAM, E2ROM.
To achieve these goals, the present invention adopts following technical scheme:
A kind of modular multichannel light power meter, comprises host computer and 2
nindividual OPM light power meter module, and n is positive integer, host computer comprises clock signal clk module, functional status controls enable module, data/commands module and feedback module, wherein:
The data that described data/commands module sends or steering order are converted to serial by parallel data and pass to OPM light power meter module, and receive the return data of OPM light power meter module;
Described functional status controls enable module, is determined, for realizing 2 by n bit
nplant combination, thus select and control 2
nwhether individual OPM light power meter module works;
Described feedback module connects OPM light power meter module, is used to indicate that OPM light power meter module is in running order, data receiver, data send and are sent completely state;
Described clock signal clk module produces CLK signal, and host computer and all OPM light power meter modules share same frequency clock CLK, and whether the having to have no way of of clock selects connected OPM light power meter module work to decide.
Described host computer is for detecting button, generated clock, the transmitting-receiving of data/commands and the process of decoding and data and calculating, and described host computer is also provided with display module.
Described feedback module 2 bit controls, and has four kinds of array modes.
Described clock signal clk module, functional status control enable module, data/commands module is all connected OPM light power meter module by control line with feedback module.
The control line number that described functional status controls enable module connection is n.
Separate between described OPM light power meter module, pluggable replacing.
Described OPM light power meter module, comprises data acquisition port and static RAM, electricallyerasable ROM (EEROM).
The implementation method of above-mentioned modular multichannel light power meter, comprises the following steps:
(1) initialization host computer and each OPM light power meter module;
(2) host computer judges to identify online OPM light power meter module, and reads the power meter calibration data that in each OPM light power meter module, E2ROM preserves, and is used for revising the performance number of actual measurement;
(3) host computer arranges sampling number, gain range, channel selecting and centre wavelength parameter, is sent to OPM light power meter module by data/commands module;
(4) after optimum configurations completes, send data acquisition instructions, all online power meter modules work simultaneously and enter the real-time data acquisition stage, after each data acquisition completes, OPM light power meter module produces look-at-me, after upper computer detection to look-at-me, response is interrupted reading the data in OPM light power meter module, the sampled data of reading is carried out logarithm operation and is converted into performance number in conjunction with calibration parameter and display in real time.
In described step (3), when the real-time data acquisition stage needs Reparametrization, first send and stop sampling instruction, then send new channel parameters, then enter sample phase.
In described step (4), in OPM light power meter module, SRAM is used for the sampled point of real-time storage luminous power, and host computer, by sending the sampled point preserved in instruction fetch SRAM, is used for checking the numerical value of sampling.
Beneficial effect of the present invention is:
(1) effectively solve existing desk-top light power meter passage few, measure fixed single, Multichannel optical power meter extendability is poor, the problem that sampling rate is low;
(2) structure is simple, only needs 4 groups of control lines just can realize 2
nthe operation control of individual light power meter module and data acquisition, and the control of the part such as E2ROM and SRAM;
(3) all modules are all detachable, and characterisitic parameter can be different, while realizing the expansion of multi-channel power meter, again reduce the cost of product, have higher efficiency;
(4) sample rate is fast, minimal sampling time 1us; Do not need special CAN communication module and observe strict CAN communication protocol, reducing costs, raise the efficiency;
(5) can control multimode timesharing or work simultaneously, making light power meter have multi-channel measurement and the removable characteristic of module, possess measurement range wider, operation uses more flexible feature;
(6) operation easier of user can be reduced, reduce the quantity using instrument, cost-saving, be better applied in the testing requirement of Fiber-optic Communication Projects and passive photonic loop.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is workflow schematic diagram of the present invention;
Wherein: 1, PC control part; 2, clock signal clk; 3, functional status controls enable part S; 4, data/commands Data; 5, feedback end F; 6, OPM light power meter module.
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, a kind of modular multichannel light power meter, by PC control part (1), clock signal clk (2), functional status controls enable part S (3), data/commands Data (4), feedback end F (5) and OPM light power meter module (6) six part composition, ingredient as shown in Figure 1.Wherein PC control part (1) is the core of modular multichannel light power meter, is responsible for the detection of button, the generation of clock, the transmitting-receiving of data/commands and decoding, the process of data and calculating, and the link such as the display at interface.Clock CLK (2) is produced by PC control end, and all modules share same frequency clock CLK, and whether the having of clock is had no way of selects this OPM light power meter module (6) to work to decide.The enable part S of functional status (3) is decided by n bit, can realize 2
nplant combination, thus select and control 2
nindividual OPM light power meter module (6) work.Data/commands Data (4) part the data of host computer transmission or steering order is converted to serial by parallel data pass to OPM light power meter module (6), and return data in receiving OPM light power meter module (6).Feedback end (5) has 2 bits to form, and has four kinds of array modes, indicate that OPM light power meter module (6) is in running order, data receiver, data send and are sent completely state.
As shown in Figure 2, the method of work of this device is: enter init state during start, to judge to identify online OPM light power meter module (6) at init state PC control end (1) and read the power meter calibration data that E2ROM in modules preserves, being used for revising the performance number of actual measurement.After initialization completes, instrument carries out the optimum configurations given tacit consent to, and arrange the parameters such as sampling number, gain range, channel selecting, centre wavelength, all parameters are all sent to OPM light power meter module (6) by data/commands Data (4).After optimum configurations completes, send data acquisition instructions, all online power meter modules work simultaneously and enter the real-time data acquisition stage, after each data acquisition completes, OPM light power meter module (6) produces look-at-me, after PC control end (1) detects look-at-me, response is interrupted the data in reading OPM light power meter module (6) and is processed and displayed.When the real-time data acquisition stage needs Reparametrization, first send and stop sampling instruction, then send new channel parameters, then enter sample phase.SRAM is used for the sampled point of real-time storage luminous power in OPM light power meter module (6), and PC control end (1) can read by sending instruction the sampled point preserved in SRAM, is used for checking the numerical value of sampling.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. a modular multichannel light power meter, is characterized in that: comprise host computer and 2
nindividual OPM light power meter module, and n is positive integer, host computer comprises clock signal clk module, functional status controls enable module, data/commands module and feedback module, wherein:
The data that described data/commands module sends or steering order are converted to serial by parallel data and pass to OPM light power meter module, and receive the return data of OPM light power meter module;
Described functional status controls enable module, is determined, for realizing 2 by n bit
nplant combination, thus select and control 2
nwhether individual OPM light power meter module works;
Described feedback module connects OPM light power meter module, is used to indicate that OPM light power meter module is in running order, data receiver, data send and are sent completely state;
Described clock signal clk module produces CLK signal, and host computer and all OPM light power meter modules share same frequency clock CLK, and whether the having to have no way of of clock selects connected OPM light power meter module work to decide.
2. a kind of modular multichannel light power meter as claimed in claim 1, is characterized in that: described host computer is for detecting button, generated clock, the transmitting-receiving of data/commands and the process of decoding and data and calculating, and described host computer is also provided with display module.
3. a kind of modular multichannel light power meter as claimed in claim 1, is characterized in that: described feedback module 2 bit controls, and has four kinds of array modes.
4. a kind of modular multichannel light power meter as claimed in claim 1, is characterized in that: described clock signal clk module, functional status control enable module, data/commands module is all connected OPM light power meter module by control line with feedback module.
5. a kind of modular multichannel light power meter as claimed in claim 1, is characterized in that: the control line number that described functional status controls enable module connection is n.
6. a kind of modular multichannel light power meter as claimed in claim 1, is characterized in that: separate between described OPM light power meter module, pluggable replacing.
7. a kind of modular multichannel light power meter as claimed in claim 1, is characterized in that: described OPM light power meter module, comprises data acquisition port and static RAM, electricallyerasable ROM (EEROM).
8., based on the implementation method of the modular multichannel light power meter such as according to any one of claim 1-7, it is characterized in that: comprise the following steps:
(1) initialization host computer and each OPM light power meter module;
(2) host computer judges to identify online OPM light power meter module, and reads the power meter calibration data that in each OPM light power meter module, E2ROM preserves, and is used for revising the performance number of actual measurement;
(3) host computer arranges sampling number, gain range, channel selecting and centre wavelength parameter, is sent to OPM light power meter module by data/commands module;
(4) after optimum configurations completes, send data acquisition instructions, all online power meter modules work simultaneously and enter the real-time data acquisition stage, after each data acquisition completes, OPM light power meter module produces look-at-me, after upper computer detection to look-at-me, response is interrupted reading the data in OPM light power meter module, the sampled data of reading is carried out logarithm operation and is converted to performance number in conjunction with calibration parameter and display in real time.
9. implementation method as claimed in claim 8, is characterized in that: in described step (3), when the real-time data acquisition stage needs Reparametrization, first sends and stops sampling instruction, then send new channel parameters, then enter sample phase.
10. implementation method as claimed in claim 8, it is characterized in that: in described step (4), in OPM light power meter module, SRAM is used for the sampled point of real-time storage luminous power, and host computer, by sending the sampled point preserved in instruction fetch SRAM, is used for checking the numerical value of sampling.
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| CN201510742914.XA CN105278383B (en) | 2015-11-04 | 2015-11-04 | A kind of modular multichannel light power meter and its implementation |
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| CN201510742914.XA CN105278383B (en) | 2015-11-04 | 2015-11-04 | A kind of modular multichannel light power meter and its implementation |
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| CN105278383B CN105278383B (en) | 2018-05-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020092972A1 (en) * | 2001-01-16 | 2002-07-18 | International Business Machines Corporation | Transimpedance amplifier with an in-situ optical power meter |
| US20020097392A1 (en) * | 2001-01-19 | 2002-07-25 | Minneman Michael Paul | Non-linear ranging to control linear ranging measurement device |
| CN201653549U (en) * | 2009-12-02 | 2010-11-24 | 天津光电通信技术有限公司 | Multichannel optical power meter |
| CN202209990U (en) * | 2011-09-05 | 2012-05-02 | 肖晓飞 | Intelligent optical power meter |
| CN202916008U (en) * | 2012-10-30 | 2013-05-01 | 博创科技股份有限公司 | Multichannel optical power meter |
-
2015
- 2015-11-04 CN CN201510742914.XA patent/CN105278383B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020092972A1 (en) * | 2001-01-16 | 2002-07-18 | International Business Machines Corporation | Transimpedance amplifier with an in-situ optical power meter |
| US20020097392A1 (en) * | 2001-01-19 | 2002-07-25 | Minneman Michael Paul | Non-linear ranging to control linear ranging measurement device |
| CN201653549U (en) * | 2009-12-02 | 2010-11-24 | 天津光电通信技术有限公司 | Multichannel optical power meter |
| CN202209990U (en) * | 2011-09-05 | 2012-05-02 | 肖晓飞 | Intelligent optical power meter |
| CN202916008U (en) * | 2012-10-30 | 2013-05-01 | 博创科技股份有限公司 | Multichannel optical power meter |
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| CN105278383B (en) | 2018-05-11 |
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