CN110417264A - The bias supply device and method of automatic adjusument 4 quadrant detector pulse signal - Google Patents
The bias supply device and method of automatic adjusument 4 quadrant detector pulse signal Download PDFInfo
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- CN110417264A CN110417264A CN201810401195.9A CN201810401195A CN110417264A CN 110417264 A CN110417264 A CN 110417264A CN 201810401195 A CN201810401195 A CN 201810401195A CN 110417264 A CN110417264 A CN 110417264A
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- signal
- bias voltage
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0016—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters
Abstract
The present invention relates to the bias supply devices of automatic adjusument 4 quadrant detector pulse signal, device includes the ambient temperature detection circuit being linked in sequence, analog-digital converter, controller, and the pulse signal detection circuit connecting with analog-digital converter, the bias voltage generating circuit being all connected with each part mentioned above.Present invention adds closed loop feedback systems, can adjust the bias voltage value of bias supply output in real time, reduce data distortion caused by being saturated due to pulse signal, improve the precision of 4 quadrant detector output target position；By the detection to environment temperature, the bias voltage value of output is adjusted, detector response rate variation issue caused by variation of ambient temperature is eliminated, improves the sensitive domain of 4 quadrant detector.
Description
Technical field
The present invention relates to a kind of bias supply device and methods of 4 quadrant detector, and in particular to a kind of adaptively to adjust
The bias supply device and method for saving 4 quadrant detector pulse signal, can be applied to photodetection field.
Background technique
4 quadrant detector has the characteristics that precision height, high sensitivity, spatial resolution height, fast response time, noise are low,
Therefore in the fields such as position detection, positioning, target following extensive application.And bias supply provides partially for 4 quadrant detector
Voltage is set, guarantees the normal work of 4 quadrant detector.
Since in practical work process, the pulse signal of 4 quadrant detector output and the laser facula energy of input are at just
Than, when light spot energy is larger, there are saturated phenomenons for the pulse voltage of detector output, the detection of target position signal is influenced,
Distortion is generated, can greatly weaken the precision of four-quadrant photo detector output position signal in this way.In addition, due to Quadrant detector
The responsivity of device can generate variation with the change of environment temperature, therefore, in identical bias voltage and target position, no
Under same environment temperature, the pulse signal amplitude of detector output can also generate variation, and then influence 4 quadrant detector
Detect sensitive domain.Therefore, bias supply provides suitable bias voltage, so that the amplitude of 4 quadrant detector output voltage signal
Unsaturation is the premise of 4 quadrant detector output accurate target location information.For above situation, a kind of energy automatic adjusument
The bias supply device of 4 quadrant detector pulse signal is of great significance.
Summary of the invention
The technical problem to be solved by the present invention is provide it is a kind of can automatic adjusument 4 quadrant detector pulse signal it is inclined
Power supply device and method are set, reduces data distortion problem caused by being saturated due to pulse signal, and eliminate due to environment temperature
Detector response rate variation issue caused by changing.
The purpose of the present invention is what is be achieved through the following technical solutions: automatic adjusument 4 quadrant detector pulse signal
Bias supply device, ambient temperature detection circuit, analog-digital converter, controller including sequential connection, and and analog-to-digital conversion
The pulse signal detection circuit of device connection, the bias voltage generating circuit being all connected with each part mentioned above；
The ambient temperature detection circuit, for being obtained after the partial pressure value of the expression temperature of acquisition is output to analog-digital converter
To digital voltage division signal；
The pulse signal detection circuit for receiving the pulse signal of 4 quadrant detector, and is filtered and broadens
Voltage signal is generated, obtains digital voltage signal after being sent into analog-digital converter；
The controller, for according to digital voltage division signal and digital voltage signal generation bias from analog-digital converter
Signal is controlled, bias voltage generating circuit is supplied to；
The bias voltage generating circuit is exported for handling bias voltage control signal, and to 4 quadrant detector
Bias voltage.
The bias voltage generating circuit includes: the first voltage follower of sequential connection, low pressure pwm chip, inverse
Power transformation road, transformer, full bridge rectifier, LC low-pass filter circuit, bias voltage output protection circuit, and with low pressure PWM
Control the DC power supply circuit of chip, inverter circuit connection；
The bias voltage control signal that controller provides is driven and is isolated by first voltage follower, after output isolation
Bias voltage control signal controls pwm chip, generates pwm signal, and low-voltage dc power supply inversion is exchange by driving inverter circuit
Power supply successively carries out full-wave rectification through transformer boosting, full bridge rectifier, and the signal of output is sent in LC low-pass filter
Alternating component after filtering out full-wave rectification, it is inclined to 4 quadrant detector output after bias voltage output protection circuit clipping
Set voltage.
The pulse signal detection circuit includes the second voltage follower being linked in sequence, bivalent high-pass filter, peak value
Holding circuit；
The pulse signal of 4 quadrant detector after second voltage follower isolation buffer enter bivalent high-pass filter, two
Signal after rank high pass filter filters enters peak holding circuit and carries out broadening generation voltage signal.
The bias supply implementation method of automatic adjusument 4 quadrant detector pulse signal, comprising the following steps:
1) partial pressure value of ambient temperature detection circuit acquisition tables temperature displaying function is output to analog-digital converter and is converted into digital partial pressure
Signal；
2) controller obtains ambient temperature value according to digital voltage division signal, searches the corresponding bias control of the ambient temperature value
Signal processed；
3) controller provides bias voltage control signal to bias voltage generating circuit, and bias voltage generating circuit is to bias voltage control
Signal is handled, output bias voltage to 4 quadrant detector；
4) 4 quadrant detector detects the energy in four-quadrant photosurface under a bias voltage, generates the pulse of respective magnitudes
Signal, the filtering of pulsed signal detection circuit and broadening；
5) voltage signal after the broadening of pulsed signal detection circuit, is sent into control after being sent to analog-digital converter conversion
Device；Controller obtains ambient temperature value according to voltage signal, and it is maximum to search the corresponding bias voltage control signal of the ambient temperature value
Value, then according to the amplitude information of pulse signal and the threshold value for increaseing or decreasing bias voltage control signal output amplitude of setting
Information obtains corresponding bias voltage control signal voltage, is supplied to bias voltage generating circuit.
The bias voltage generating circuit handles bias voltage control signal, output bias voltage to 4 quadrant detector
The following steps are included:
Controller provides bias voltage control signal, and bias voltage generating circuit is driven simultaneously by internal voltage follower enhancing
Isolation, the bias voltage control signal after voltage follower output isolation control pwm chip, generate corresponding pwm signal, drive
Low-voltage dc power supply inversion is AC power source by inverter circuit, and transformer carries out boosting processing, full-bridge rectification electricity to AC power source
Road to after boosting AC signal carry out full-wave rectification, the signal of output is sent to filter out full-wave rectification in LC low-pass filter after
Alternating component, after bias voltage output protection circuit clipping, to 4 quadrant detector export bias voltage value.
The beneficial effects of the present invention are:
Great advantage of the invention is that it is anti-to joined closed loop on the basis of traditional 4 quadrant detector bias power supply circuit
Feedback system can adjust the biased electrical of bias supply output by the acquisition to 4 quadrant detector output pulse signal in real time
Pressure value reduces data distortion caused by being saturated due to pulse signal, improves the precision of 4 quadrant detector output target position；
By the detection to environment temperature, the bias voltage value of output is adjusted, eliminates detector response rate caused by variation of ambient temperature
Variation issue improves the sensitive domain of 4 quadrant detector；In addition, bias voltage adjustment wider range in the present embodiment,
Not only meet the 4 quadrant detector of low bias voltage value demand, also meet the 4 quadrant detector of high bias voltage value demand,
Application range is wider.
Detailed description of the invention
A kind of Fig. 1 bias supply device composition of energy automatic adjusument 4 quadrant detector pulse signal of the present invention
Structural schematic diagram；
Fig. 2 it is of the present invention it is a kind of can automatic adjusument 4 quadrant detector pulse signal bias supply device in partially
Set voltage generation circuit composed structure schematic diagram；
A kind of Fig. 3 bias supply device middle arteries of energy automatic adjusument 4 quadrant detector pulse signal of the present invention
Rush signal deteching circuit composed structure schematic diagram；
A kind of Fig. 4 bias supply device middle ring of energy automatic adjusument 4 quadrant detector pulse signal of the present invention
Border temperature sensing circuit composed structure schematic diagram；
A kind of Fig. 5 bias supply device control of energy automatic adjusument 4 quadrant detector pulse signal of the present invention
Flow chart；
Wherein, 1 bias voltage generating circuit, 2 ambient temperature detection circuits, 3 pulse signal detection circuits, 4 analog-to-digital conversions
Device, 5 controllers；6 low-voltage DC power source circuits, 7 voltage followers, 8PWM control chip, 9 inverter circuits, 10 transformers, 11 are entirely
Bridge rectification circuit, 12LC low-pass filter circuit, 13 bias voltage output protection circuits, 14 voltage followers, the filter of 15 second order high passes
Wave device, 16 peak holding circuits, 17 thermistors, 18 voltage followers.
Specific embodiment
Illustrate present embodiment, a kind of biasing of energy automatic adjusument 4 quadrant detector pulse signal in conjunction with Fig. 1 to Fig. 4
Power supply device, mainly by bias voltage generating circuit 1, pulse signal detection circuit 3, ambient temperature detection circuit 2, analog-to-digital conversion
Device 4, controller 5 form；Wherein, bias voltage generating circuit 1 is by low-voltage DC power source circuit 6, voltage follower 7, PWM control
Coremaking piece 8, inverter circuit 9, transformer 10, full bridge rectifier 11, LC low-pass filter circuit 12, bias voltage output protection electricity
Road 13 forms；Pulse signal detection circuit 3 is by voltage follower 14, bivalent high-pass filter 15,16 groups of peak holding circuit
At；Ambient temperature detection circuit 2 is made of thermistor 17 and voltage follower 18.
Fig. 5 is control flow chart of the invention, and the controller 5 acquires thermistor 17 by analog-digital converter 4
Partial pressure value calculates ambient temperature value, finds the corresponding bias control of the ambient temperature value by the database inside controller 5
Signal initial value processed, bias voltage control signal control bias voltage generating circuit 1 export certain bias voltage value, Quadrant detector
Device detects the energy in four-quadrant photosurface, generates the narrow pulse signal of respective magnitudes, the burst pulse under the bias value
Signal after voltage follower isolation buffer enter bivalent high-pass filter 15, the filtered signal of bivalent high-pass filter 15 into
Enter peak holding circuit 16 to be broadened, enters controller 5 through analog-digital converter 4, controller 5 combines analog-digital converter 4 another
The temperature information value that road is sent, COMPREHENSIVE CALCULATING go out corresponding bias voltage control signal, give bias voltage generating circuit 1.
The bias voltage control signal is input to the frequency adjustment pin of pwm chip, exports two-way pwm signal, real
The inversion of existing low-voltage dc signal, then boost via transformer, the AC signal after boosting through full bridge rectifier, filter,
After bias voltage output protection circuit, it is output to the bias voltage interface of 4 quadrant detector.
Based on the bias supply device of automatic adjusument 4 quadrant detector pulse signal, including following sequence and step:
A. after powering on, the low-voltage DC power source circuit 6 in bias voltage generating circuit 1 is pulse signal detection circuit 3, ring
Border temperature sensing circuit 2, analog-digital converter 4, controller 5 provide working power；
B. ambient temperature detection circuit 2 acquires the partial pressure value of thermistor 17, is output in 4 channel 1 of analog-digital converter, controls
Device 5 processed obtains the numerical signal after the conversion of 4 channel 1 of analog-digital converter by SPI communication mode；
C. controller 5 calculates ambient temperature value, finds the ambient temperature value pair by the database inside controller 5
The bias voltage control signal initial value answered；
D. controller 5 provides bias voltage control signal initial value, bias voltage generating circuit 1 to bias voltage generating circuit 1
On the one hand enhance the driving capability of bias voltage control signal by internal voltage follower 7, on the other hand realizes the bias of input
Being isolated between control signal and internal electric source conversion circuit, the bias voltage control signal control after the output isolation of voltage follower 7
Pwm chip 8, generates corresponding pwm signal, and driving inverter circuit 9 realizes that by 6 inversion of low-voltage dc power supply be alternating current
Source, transformer 10 carry out boosting processing to AC power source, and it is whole that the AC signal after 11 pairs of full bridge rectifier boostings carries out all-wave
Stream, the signal of output are sent to the alternating component filtered out after full-wave rectification in LC low-pass filter 12, are exported by bias voltage
Protect 13 clipping of circuit backward, 4 quadrant detector exports certain bias voltage value；
E. 4 quadrant detector detects the energy in four-quadrant photosurface under the bias voltage value, generates corresponding
The narrow pulse signal of amplitude, 14 isolation buffer of voltage follower in the narrow pulse signal pulsed signal detection circuit 3
Enter bivalent high-pass filter 15 afterwards, the filtered signal of bivalent high-pass filter 15 enters peak holding circuit 16 and opened up
It is wide.
F. the voltage signal after pulsed signal detection circuit 3 broadens, is sent in the channel 2 of analog-digital converter 4, converts
It is sent into controller 5 afterwards, controller 5 acquires the ambient temperature information in 4 channel 1 of analog-digital converter simultaneously, and controller 5 is according to environment
Temperature information calculates ambient temperature value, finds the corresponding bias of the ambient temperature value by the database inside controller 5
Signal maximum is controlled, then controller 5 increaseds or decreases partially further according to what the amplitude information and controller 5 of pulse signal were set
The threshold information of voltage control signal output amplitude is set, COMPREHENSIVE CALCULATING goes out corresponding bias voltage control signal voltage value, is supplied to biasing
Voltage generation circuit 1.
Claims (5)
1. the bias supply device of automatic adjusument 4 quadrant detector pulse signal, it is characterised in that the ring including sequential connection
Border temperature sensing circuit (2), analog-digital converter (4), controller (5), and the pulse signal inspection being connect with analog-digital converter (4)
Slowdown monitoring circuit (3), the bias voltage generating circuit (1) being all connected with each part mentioned above；
The ambient temperature detection circuit (2), after the partial pressure value of the expression temperature of acquisition is output to analog-digital converter (4)
Obtain digital voltage division signal；
The pulse signal detection circuit (3), for receiving the pulse signal of 4 quadrant detector, and is filtered and broadens life
At voltage signal, digital voltage signal is obtained after being sent into analog-digital converter (4)；
The controller (5) is inclined for being generated according to the digital voltage division signal and digital voltage signal that come from analog-digital converter (4)
Voltage-controlled signal processed is supplied to bias voltage generating circuit (1)；
The bias voltage generating circuit (1), for handling bias voltage control signal, and it is inclined to 4 quadrant detector output
Set voltage.
2. the bias supply device of automatic adjusument 4 quadrant detector pulse signal according to claim 1, feature
It is, the bias voltage generating circuit (1) includes: first voltage follower (7), the low pressure pwm chip of sequential connection
(8), inverter circuit (9), transformer (10), full bridge rectifier (11), LC low-pass filter circuit (12), bias voltage output are protected
Protection circuit (13), and the DC power supply circuit (6) being connect with low pressure pwm chip (8), inverter circuit (9)；
The bias voltage control signal that controller (5) provides is driven and is isolated by first voltage follower (7), after output isolation
Bias voltage control signal control pwm chip (8), generate pwm signal, driving inverter circuit (9) is by low-voltage dc power supply (6)
Inversion is AC power source, successively carries out full-wave rectification through transformer (10) boosting, full bridge rectifier (11), the signal of output is sent
Alternating component after entering in LC low-pass filter (12) to filter out full-wave rectification is limited by bias voltage output protection circuit (13)
After width, bias voltage is exported to 4 quadrant detector.
3. the bias supply device of automatic adjusument 4 quadrant detector pulse signal according to claim 1, feature
It is, the pulse signal detection circuit (3) includes the second voltage follower (14) being linked in sequence, bivalent high-pass filter
(15), peak holding circuit (16)；
The pulse signal of 4 quadrant detector enters bivalent high-pass filter after second voltage follower (14) isolation buffer
(15), bivalent high-pass filter (15) filtered signal enters peak holding circuit (16) and carries out broadening generation voltage signal.
4. the bias supply implementation method of automatic adjusument 4 quadrant detector pulse signal, which is characterized in that including following step
It is rapid:
1) partial pressure value of ambient temperature detection circuit (2) acquisition tables temperature displaying function is output to analog-digital converter (4) and is converted into number point
Press signal；
2) controller (5) obtains ambient temperature value according to digital voltage division signal, searches the corresponding bias control of the ambient temperature value
Signal processed；
3) controller (5) provides bias voltage control signal to bias voltage generating circuit (1), and bias voltage generating circuit (1) is to inclined
Voltage-controlled signal processed is handled, output bias voltage to 4 quadrant detector；
4) 4 quadrant detector detects the energy in four-quadrant photosurface under a bias voltage, generates the pulse letter of respective magnitudes
Number, pulsed signal detection circuit (3) filtering and broadening；
5) voltage signal after pulsed signal detection circuit (3) broadening, is sent into control after being sent to analog-digital converter (4) conversion
Device (5)；Controller (5) obtains ambient temperature value according to voltage signal, searches the corresponding bias voltage control letter of the ambient temperature value
Then number maximum value increaseds or decreases bias voltage control signal output amplitude according to the amplitude information of pulse signal and setting
Threshold information, obtain corresponding bias voltage control signal voltage, be supplied to bias voltage generating circuit (1).
5. the bias supply implementation method of automatic adjusument 4 quadrant detector pulse signal according to claim 4,
It is characterized in that, the bias voltage generating circuit (1) handles bias voltage control signal, and output bias voltage to four-quadrant is visited
Survey device the following steps are included:
Controller (5) provides bias voltage control signal, and bias voltage generating circuit (1) passes through internal voltage follower (7) enhancing
It drives and is isolated, the bias voltage control signal after voltage follower (7) output isolation controls pwm chip (8), generates corresponding
Pwm signal, driving inverter circuit (9) by low-voltage dc power supply (6) inversion be AC power source, transformer (10) to AC power source into
Row boosting processing, full bridge rectifier (11) carry out full-wave rectification to the AC signal after boosting, and the signal of output is sent to LC
The alternating component after full-wave rectification is filtered out in low-pass filter (12), after bias voltage output protection circuit (13) clipping,
Bias voltage value is exported to 4 quadrant detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810401195.9A CN110417264A (en) | 2018-04-28 | 2018-04-28 | The bias supply device and method of automatic adjusument 4 quadrant detector pulse signal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810401195.9A CN110417264A (en) | 2018-04-28 | 2018-04-28 | The bias supply device and method of automatic adjusument 4 quadrant detector pulse signal |
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| CN110417264A true CN110417264A (en) | 2019-11-05 |
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| CN201810401195.9A Pending CN110417264A (en) | 2018-04-28 | 2018-04-28 | The bias supply device and method of automatic adjusument 4 quadrant detector pulse signal |
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