CN106813776A - Multrirange optical detection device - Google Patents
Multrirange optical detection device Download PDFInfo
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- CN106813776A CN106813776A CN201611132113.2A CN201611132113A CN106813776A CN 106813776 A CN106813776 A CN 106813776A CN 201611132113 A CN201611132113 A CN 201611132113A CN 106813776 A CN106813776 A CN 106813776A
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- 238000001514 detection method Methods 0.000 title claims abstract description 73
- 230000003287 optical effect Effects 0.000 title claims abstract description 72
- 230000003321 amplification Effects 0.000 claims abstract description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 9
- 230000033228 biological regulation Effects 0.000 claims description 7
- 238000004886 process control Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 description 15
- 230000008859 change Effects 0.000 description 10
- 230000001105 regulatory effect Effects 0.000 description 9
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
Abstract
The present invention relates to a kind of multrirange optical detection device, including：The amplification signal of overall range control module reception amplifier output simultaneously judges to amplify that whether signal in the range of detection range, first voltage control signal is sent to gain amplifier control module, adjustment module and baseline setup module.The light detection baseline values that signal or baseline setup module are set are amplified in the detection of peakvalue's checking feedback module.With temperature compensation signal be superimposed Regulate signal by voltage gain control module, and exports second voltage control signal to bias supply.Bias supply produces bias voltage, and exports bias voltage to optical sensor.Optical signal to be detected is converted into electric signal by optical sensor.Gain amplifier control module produces gain control signal.Baseline setup module generation light detection baseline values.Temperature compensation module output temperature thermal compensation signal.Amplifier is amplified to the electric signal that optical sensor is exported.The optical signal detecting of interior varying strength on a large scale is realized by the technical scheme.
Description
Technical field
The present invention relates to technical field of light detection, more particularly, to a kind of multrirange optical detection device.
Background technology
Optical signal detecting technology turns into the key technology in numerous engineer applied fields, wherein function near infrared spectrum imaging skill
Detection in art to optical signal particularly faint optical signal has requirement very high.Existing optical signal detecting device is main by biasing
Power supply, optical sensor and amplifying circuit composition, it does not have light detection feedback and gain-adjusted function, although with inspection very high
Sensitivity is surveyed, but there is certain voltage output to limit, the range of light intensity of detection is limited.In actual application, existing skill
Art frequently can lead to detect output signal saturation when running into the big light intensity signal of excursion.So for the detection of different light intensity
Need the optical signal detecting device from different ranges or different sensitivity.Result is exactly even whole whole device caused by so
The range of application of individual equipment is restricted.
In view of this, it is special to propose the present invention.
The content of the invention
Regarding to the issue above, it is an object of the invention to provide a kind of multrirange optical detection device, be capable of achieving on a large scale it is interior not
With the optical signal detecting of intensity.
To achieve these goals, there is provided following technical scheme：
The present invention provides a kind of multrirange optical detection device.The device includes that overall range control module, peakvalue's checking are anti-
Feedback module, adjustment module, voltage gain control module, bias supply, optical sensor, gain amplifier control module, baseline are set
Module, temperature compensation module and amplifier；Wherein, the amplification signal of overall range control module reception amplifier output and judge
Amplify signal whether in the range of detection range, if it is not, the voltage feedback signal that peakvalue's checking feedback module feedback is come then is received,
And send first voltage control signal to gain amplifier control module, adjustment module and baseline setup module.Peakvalue's checking feeds back
The light detection baseline values for amplifying signal or the setting of baseline setup module of module detection amplifier output, and it is program control to entire amount
Molding block output voltage feedback signal.Adjustment module receives the first voltage control signal of overall range control module transfer, and
To voltage gain control module output regulation signal.Regulate signal and temperature that voltage gain control module exports adjustment module
The temperature compensation signal superposition of compensating module output, and export second voltage control signal to bias supply.Bias supply is received
Second voltage control signal, and bias voltage is produced according to second voltage control signal, and export bias voltage to optical sensor.
Optical sensor loads bias voltage, optical signal to be detected is converted into electric signal, and electric signal is delivered into amplifier.Amplify
Gain control module receives the first voltage control signal of overall range control module, produces gain control signal, to control to put
The gain of big device.Baseline setup module receives the first voltage control signal of overall range control module, and generates light detection base
Line level.Temperature compensation module is to voltage gain control module output temperature thermal compensation signal.Amplifier receives gain amplifier control
The gain control signal that module sends, and the electric signal that optical sensor is exported is amplified, signal is amplified in output will simultaneously be put
Big signal is delivered to overall range control module and peakvalue's checking feedback module.The technical scheme controls light to pass by voltage gain
Sensor, controls amplifier, peakvalue's checking feedback module to be fed back, overall range control module by gain amplifier control module
Determine whether to meet detection range, suitable entire gain is selected by overall range control module, the light of detection is needed to match
Strong signal, it is achieved thereby that the optical signal detecting of interior varying strength on a large scale.
Brief description of the drawings
Fig. 1 is the situation schematic diagram of detection signal according to embodiments of the present invention；
Fig. 2 is the structural representation of multrirange optical detection device according to embodiments of the present invention；
Fig. 3 is that multrirange optical detection device according to embodiments of the present invention carries out light detects schematic diagram.
Specific embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little implementation methods are used only for explaining know-why of the invention, it is not intended that limit the scope of the invention.
The central scope of the embodiment of the present invention is to control light optical sensor bias supply by voltage gain, by amplifier
Gain controls multistage amplifier circuit, and whether peakvalue's checking feedback entire gain meets detection range, by overall range control part
Suitable entire gain is selected, the light intensity signal of detection is needed to match.
Fig. 1 schematically illustrates the main conditions of embodiment of the present invention detection signal：1. the light signal strength for detecting compared with
By force, light intensity is changed greatly；2. the light intensity signal for detecting is stronger, and light intensity change is small；3. detection light intensity signal is weaker, light intensity change
It is small.
Fig. 2 schematically illustrates a kind of structural representation of multrirange optical detection device.Wherein, multrirange light detection
Device 200 can include：Overall range control module 201, peakvalue's checking feedback module 208, adjustment module 202, voltage gain
Control module 203, bias supply 204, optical sensor 205, gain amplifier control module 210, baseline setup module 207, temperature
Compensating module 206 and amplifier 209.Wherein, overall range control module 201 is defeated for receiving peakvalue's checking feedback module 208
Whether the feedback signal that goes out simultaneously judges to amplify signal in the range of detection range, if it is not, then receiving peakvalue's checking feedback module 208
The voltage feedback signal that feedback is come, and sent to gain amplifier control module 210, adjustment module 202 and baseline setup module 207
First voltage control signal.Peakvalue's checking feedback module 208 is used to detect the amplification signal and voltage is anti-of the output of amplifier 209
Feedback signal is transmitted to overall range control module 201.Adjustment module 202 is used to receive the overall transmission of range control module 201
First voltage control signal, and to the output regulation signal of voltage gain control module 203.Voltage gain control module 203 is used for
The temperature compensation signal that the Regulate signal that adjustment module 202 is exported is exported with temperature compensation module 206 is superimposed, and to biased electrical
Source 204 exports second voltage control signal.Bias supply 204 is used to receive second voltage control signal, and according to second voltage
Control signal produces bias voltage, and exports bias voltage to optical sensor 205.Optical sensor 205 is used to load bias voltage,
Optical signal to be detected is converted into electric signal, and electric signal is delivered to amplifier 209.Gain amplifier control module 210 is used
In the first voltage control signal for receiving overall range control module 201, to control the gain of amplifier 209.Baseline sets mould
Block 207 is used to receive the first voltage control signal of overall range control module 201, and generates light detection baseline values.Temperature
Compensating module 206 is used for output temperature thermal compensation signal.Amplifier 209 is used to put the electric signal of the output of optical sensor 205
Greatly, output is amplified signal and is delivered to peakvalue's checking feedback module 208 by signal is amplified.
In the present embodiment, overall range control module sets mould to adjustment module, gain amplifier control module and baseline
Block exports first voltage control signal respectively, receives the feedback signal of peakvalue's checking feedback fraction and judges the amplification letter of amplifier
Number whether detection range in the range of, if it is not, then according to the peakvalue's checking feedback module feedback come voltage feedback signal, tune
Whole adjustment module, baseline setup module and gain amplifier control module and voltage gain control module, to redefine detection limit
Journey；Wherein, overall range control module receives the feedback information of peakvalue's checking feedback module feedback, and is adjusted according to feedback information
The gain level of each control section, it is ensured that effective output of the light detecting signal from amplifier；Light sensing is adjusted by adjustment module
The supply voltage of device so as to change the sensitivity of optical sensor, to control light range detection range.Overall range control module sets
Determine baseline setup module, baseline setup module coordinates amplifier to realize the setting of detection signal output baseline, can be in detection
Output voltage is reduced when light intensity is higher, saturation is prevented, so as to reflect light-intensity test value higher with smaller output voltage values.
Wherein, detection range ability can be configured according to actual conditions.
In the above-described embodiments, peakvalue's checking feedback module can specifically include voltage comparator circuit and feedback unit.Its
In, voltage comparator circuit be used for detect amplifier output amplify signal whether saturation or less than baseline setup module set light
Detection baseline values.Feedback unit detect amplifier output amplify signal saturation or less than baseline setup module set
In the case of light detection baseline values, to overall range control module output voltage feedback signal.
Voltage feedback signal is fed back to overall range control module, and amplified gain by above-mentioned peakvalue's checking feedback module
Control module and amplifier, make the gain of amplifier meet detection range of light intensity so as to export effective detected value.Peakvalue's checking
Feedback module may insure the effective of light detecting signal.
In the above-described embodiments, adjustment module can specifically include analog regulation unit and digital regulated unit.Wherein, mould
Plan adjustment unit manually adjusts analog device and coordinates digital regulated unit to complete voltage gain control jointly, can conveniently make
User is operated according to practical application.Overall range control module also passes through digital regulated unit, and through voltage gain control
Module and bias supply adjust the supply voltage of optical sensor.
In the above-described embodiments, voltage gain control module exports adjustment module Regulate signal and temperature compensation module
The temperature compensation signal superposition of output, and second voltage control signal is exported to bias supply, to adjust the biasing of bias supply
Voltage.Voltage gain control module can make the bias voltage that bias supply is exported meet the temperature changing regularity of optical sensor,
So as to ensure the stabilization of optical sensor gain, it is allowed to not be acted upon by temperature changes.
In the above-described embodiments, gain amplifier control module receives the first voltage control letter of overall range control module
Number, gain control signal is produced, to control the gain of amplifier, so as to control the amplification signal that amplifier is exported.
In the above-described embodiments, baseline setup module coordinates amplifier to set light detection baseline values.In the light intensity of detection
When higher, baseline setup module reduction output voltage prevents saturation, can reflect that light intensity higher is examined with smaller output voltage values
Measured value.
In the above-described embodiments, temperature compensation module output temperature thermal compensation signal, it is ensured that the tune of optical sensor voltage
Section change meets the trend that the sensitivity of optical sensor is varied with temperature, output temperature thermal compensation signal.
Temperature compensation module can specifically include：Scaling circuit and addition and subtraction circuit and temperature sensor.Wherein,
Temperature sensor detects the temperature of optical sensor, obtains temperature signal, and temperature signal is converted into voltage signal, then by than
Example computing circuit and addition and subtraction circuit are processed voltage signal, generate temperature compensation signal, then by temperature compensation signal
Transmit to voltage gain control module, then control optical sensor so that the biasing voltage signal of optical sensor meets optical sensor
The rule that varies with temperature of sensitivity.
In the above-described embodiments, amplifier receives the gain control signal that gain amplifier control module sends, and light is passed
The electric signal of sensor output is amplified, and output is amplified signal and the amplification signal is delivered into peakvalue's checking feedback module.It is whole
Scale of construction process control module receives the voltage feedback signal of peakvalue's checking feedback module feedback, is exported to gain amplifier control module
First voltage control signal, gain amplifier control module further controls the increasing of amplifier by the first voltage control signal
Benefit, makes gain meet detection range of light intensity so as to export effective detected value.Preferably, amplifier is casacade multi-amplifier.
In the above-described embodiments, the control voltage signal that the transmission of bias supply receiving voltage gain control module comes, and to
Optical sensor exports bias voltage.So, the size of bias voltage determines the sensitivity of light optical sensor.
In multrirange optical detection device provided in an embodiment of the present invention, overall range control module is to adjustment module, voltage
Gain control module, gain amplifier control module and baseline setup module difference output voltage control signal, receive peakvalue's checking
Whether the feedback signal of feedback module simultaneously judges to amplify signal in the range of detection range, if it is not, then adjusting according to feedback signal
Digital regulated unit, baseline setup module and gain amplifier control module and voltage gain control module in adjustment module, with
Detection range is redefined, effective output of light detecting signal is thereby ensured that.
Detect that baseline values and multistage three aspects of multiplication factor realize light detection limit by the sensitivity of optical sensor, light
The determination of journey.If the light detection output signal saturation that peakvalue's checking feedback module is detected, illustrates that optical detection measurement range is less than normal, then
Overall range control part by change output control signal adjust voltage gain control, baseline set and gain amplifier control come
Change optical sensor sensitivity and multistage gain amplifier, baseline values are improved, so as to increase corresponding range.If peakvalue's checking is arrived
Light detection output signal be less than baseline values, illustrate that optical detection measurement range is bigger than normal, then entirety range detection part make opposite tune
It is whole reducing range.So light detects output all the time within the scope of effective.And further, the embodiment of the present invention exists
Receiving can be electric according to output control is adjusted while peakvalue's checking feedback module feeds back and adjusts voltage and the gain of amplifier
The size of pressure determines range of light intensity.
Fig. 3 schematically illustrates multrirange optical detection device and carries out light detects schematic diagram.Wherein, when different light intensity signals
When being irradiated to multrirange photodetector, detector can be according to the light intensity regulating irradiated to suitable range ability.If light intensity
Become and exceed existing range ability greatly, then detector can reduce gain, increase range, it is ensured that output signal is effective.If light intensity becomes
Small, then detector can improve gain, reduce range.If light intensity signal is faint and changes small, detector can be carried further
Range, is decreased to light intensity correspondence scope by high-gain, at utmost improves sensitivity to detect the optical signal of faint change.
Describe the use of the multrirange optical detection device of embodiment of the present invention proposition in detail with a preferred embodiment below
Situation.Wherein, using casacade multi-amplifier, and adjustment module uses digital regulated unit and analog regulation unit.
In use, after optical sensor receives detected optical signal, overall range control module basis first
The output feedback information of peakvalue's checking feedback module judges whether current range meets detection demand.If detection light intensity it is larger and
The change of light signal strength is also larger to cause during current detection range deficiency, then overall range control module passes through gain amplifier
Control module reduces the gain of casacade multi-amplifier and reduces light by digital regulated unit adjustment voltage gain control module
The sensitivity of sensor, so that corresponding optical detection measurement range is enlarged to correspond with current light signal strength.If detection light intensity
The change of larger and light signal strength is smaller, then overall range control module is strong by baseline setup module reduction output signal first
To avoid saturation, then overall range control module judges current to degree further according to the voltage feedback signal of peakvalue's checking feedback module
Whether range meets light signal strength excursion, if range is not enough, continues through the reduction of gain amplifier control module multistage
The gain of amplifier and voltage gain control module adjusted by digital regulated unit reduce the sensitivity of optical sensor, from
And increase range；The gain of casacade multi-amplifier is improved and by numeral tune by gain amplifier control module if range is bigger than normal
Section unit adjusts voltage gain control module to improve the sensitivity of optical sensor, to reduce range, so as to ensure that optical signal is examined
The peak response of survey.If detection light intensity is weaker, overall range control module improves many by gain amplifier control module
The gain of level amplifier and voltage gain control module adjusted by digital regulated unit improve the sensitivity of optical sensor,
So that corresponding optical detection measurement range reduces so that overall sensitivity is improved to greatest extent, to meet current light signal strength
Detection, at the same by peakvalue's checking feedback module implement feed back, final output signal, it is ensured that signal detection it is effective.Analog regulation
Unit can then be made by adjusting the realization of voltage gain control module to detection range and the manual regulation and calibration of sensitivity
More facilitate during.
It will be understood by those skilled in the art that above-mentioned multrirange optical detection device embodiment can also include it is some other
Known features, such as processor, controller, memory and bus etc., wherein, memory include but is not limited to random access memory,
It is flash memory, read-only storage, programmable read only memory, volatile memory, nonvolatile memory, serial storage, parallel
Memory or register etc., processor include but is not limited to single core processor, polycaryon processor, the processor based on X86-based,
CPLD/FPGA, DSP, arm processor, MIPS processors etc., bus can include data/address bus, address bus and controlling bus.
In order to unnecessarily obscure embodiment of the disclosure, these known structures are not shown in FIG. 2.
Can mutually be referred between the various embodiments described above, will not be repeated here.
So far, combined preferred embodiment shown in the drawings describes technical scheme, but, this area
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this
On the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to correlation technique feature, these
Technical scheme after changing or replacing it is fallen within protection scope of the present invention.
Claims (4)
1. a kind of multrirange optical detection device, it is characterised in that described device includes：Overall range control module, peakvalue's checking
Feedback module, adjustment module, voltage gain control module, bias supply, optical sensor, gain amplifier control module, baseline set
Put module, temperature compensation module and amplifier；Wherein：
The overall range control module, for receiving the feedback signal of the peakvalue's checking feedback module output and judging described
Amplify signal whether in the range of detection range, if it is not, then receiving the Voltage Feedback that the peakvalue's checking feedback module feedback is come
Signal, and send first voltage control to the gain amplifier control module, the adjustment module and the baseline setup module
Signal；
The peakvalue's checking feedback module, for detecting the amplification signal of amplifier output and to the overall range control
Module exports the voltage feedback signal；
The adjustment module, the first voltage control signal for receiving the overall range control module transfer, and to
The voltage gain control module output regulation signal；
The voltage gain control module, the Regulate signal for the adjustment module to be exported is defeated with the temperature compensation module
The temperature compensation signal superposition for going out, and export second voltage control signal to the bias supply；
The bias supply, for receiving the second voltage control signal, and produces according to the second voltage control signal
Bias voltage, and export the bias voltage to the optical sensor；
The optical sensor, for loading the bias voltage, electric signal is converted into by optical signal to be detected, and by the electricity
Signal is delivered to the amplifier；
The gain amplifier control module, the first voltage control signal for receiving the overall range control module,
Gain control signal is produced, to control the gain of the amplifier；
The baseline setup module, the first voltage control signal for receiving the overall range control module, and it is raw
Baseline values are detected into light；
The temperature compensation module, for the voltage gain control module output temperature thermal compensation signal；
The amplifier, for receiving the gain control signal that the gain amplifier control module sends, and to described
The electric signal of optical sensor output is amplified, and output is amplified signal and the amplification signal is delivered into the entire amount
Process control module and the peakvalue's checking feedback module.
2. multrirange optical detection device according to claim 1, it is characterised in that the peakvalue's checking feedback module is specific
Including：
Whether voltage comparator circuit, the amplification signal for detecting the amplifier output saturation or less than the baseline sets mould
The light detection baseline values that block is set；
Feedback unit, is detecting amplifying signal saturation or setting less than the baseline setup module for amplifier output
In the case of the light detection baseline values, the voltage feedback signal is exported to the overall range control module.
3. multrirange optical detection device according to claim 1, it is characterised in that the temperature compensation module is specifically wrapped
Include：Scaling circuit and addition and subtraction circuit and temperature sensor；Wherein：
The temperature sensor detects the temperature of the optical sensor, obtains temperature signal, and the temperature signal is converted to
Voltage signal；
The scaling circuit and the addition and subtraction circuit, are processed the voltage signal, are generated the temperature and are mended
Signal is repaid, and the temperature compensation signal is transmitted to the voltage gain control module.
4. multrirange optical detection device according to claim 1, it is characterised in that the amplifier is casacade multi-amplifier.
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| CN201611132113.2A CN106813776B (en) | 2016-12-09 | 2016-12-09 | Multrirange optical detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611132113.2A CN106813776B (en) | 2016-12-09 | 2016-12-09 | Multrirange optical detection device |
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| CN106813776B CN106813776B (en) | 2018-07-31 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111919061A (en) * | 2018-04-10 | 2020-11-10 | 霍尼韦尔国际公司 | Ultraviolet flame sensor with programmable sensitivity offset |
| CN114521233A (en) * | 2019-08-16 | 2022-05-20 | 森萨塔电子技术有限公司 | Strain gauge type pressure sensing |
| CN116429250A (en) * | 2023-06-14 | 2023-07-14 | 深圳深浦电气有限公司 | Photoelectric detection circuit, photoelectric detection method, and photoelectric sensor |
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| CN105737977A (en) * | 2016-04-15 | 2016-07-06 | 博创科技股份有限公司 | Wide-range optical power meter |
| CN105894928A (en) * | 2016-06-24 | 2016-08-24 | 桂林创研科技有限公司 | Extendable high-precision digital optical power meter |
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| CN111919061A (en) * | 2018-04-10 | 2020-11-10 | 霍尼韦尔国际公司 | Ultraviolet flame sensor with programmable sensitivity offset |
| CN114521233A (en) * | 2019-08-16 | 2022-05-20 | 森萨塔电子技术有限公司 | Strain gauge type pressure sensing |
| CN116429250A (en) * | 2023-06-14 | 2023-07-14 | 深圳深浦电气有限公司 | Photoelectric detection circuit, photoelectric detection method, and photoelectric sensor |
| CN116429250B (en) * | 2023-06-14 | 2023-10-13 | 深圳深浦电气有限公司 | Photoelectric detection circuit, photoelectric detection method, and photoelectric sensor |
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| CN106813776B (en) | 2018-07-31 |
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