CN106932783B - A kind of wide range high-speed, high precision TOF measurement method - Google Patents
A kind of wide range high-speed, high precision TOF measurement method Download PDFInfo
- Publication number
- CN106932783B CN106932783B CN201710273407.5A CN201710273407A CN106932783B CN 106932783 B CN106932783 B CN 106932783B CN 201710273407 A CN201710273407 A CN 201710273407A CN 106932783 B CN106932783 B CN 106932783B
- Authority
- CN
- China
- Prior art keywords
- module
- circuit module
- circuit
- gain
- main control
- 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.)
- Active
Links
- 238000000691 measurement method Methods 0.000 title claims description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims abstract 2
- 238000010168 coupling process Methods 0.000 claims abstract 2
- 238000005859 coupling reaction Methods 0.000 claims abstract 2
- 238000005259 measurement Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 230000003287 optical effect Effects 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000005622 photoelectricity Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
- G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/483—Details of pulse systems
- G01S7/486—Receivers
- G01S7/4861—Circuits for detection, sampling, integration or read-out
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
A kind of wide range high-speed, high precision laser ranging system, it includes main control module, display circuit module, keyboard circuit module, laser diode high-voltage driving circuit module, pulse laser emission circuit module, avalanche photodide photoelectric conversion circuit module, across the resistance circuit module of prime, amplifying electric circuit with auto-gain-controlling function module, time-discriminating circuit module wherein, laser diode high-voltage driving circuit module with pulse laser emission circuit module is automatically controlled couples, laser diode high-voltage driving circuit module with the main control module is automatically controlled couples；Avalanche photodide photoelectric conversion circuit module, across the resistance circuit module of prime, amplifying electric circuit with auto-gain-controlling function module and time-discriminating circuit module successively after automatically controlled connection with main control module is automatically controlled couples, also coupling in avalanche photodide photoelectric conversion circuit has avalanche photo diode HVB high voltage bias circuit module, photodiode HVB high voltage bias circuit module with main control module is automatically controlled couples.
Description
Technical field
The present invention relates to Laser Distance Measuring Equipment manufacturing field, in particular to a kind of wide range high-speed, high precision laser ranging system
System.
Background technique
With the continuous development of contemporary electronic technology and universal, ranging product is in daily life and industrial control field
Using increasingly extensive, attention of the important performance indexes increasingly by market of precision and range as rangefinder, in the industry for
The means for promoting this two indexs of rangefinder and using are also to emerge one after another, varied.
Traditional distance measuring method, which has, surveys remote standardization, double light path error compensation method, amplifying circuit AGC method, and AGC is
Automatic Gain Control (automatic growth control).Remote standardization is surveyed on hardware circuit to improve range as circuit
Target, mainly to improve transmission power, using larger and fixed reception gain amplifier, to achieve the purpose that improve ranging, but
Although measuring at a distance, there is saturation distortion, broadening distortion etc. in signal when short distance or high reflection, at this time range error
It is larger, it can only finally be covered the shortage by the method for software multi-point calibration, but switching throws away that there are larger between high low reflection object
Error.Double light path error compensation method is on the basis of standardization using APD (Avalanche photodiode avalanche optoelectronic two
Pole pipe) gain adjustment or LD (laser diode) power adjustment guarantee closely or signal is not in full in the case of high reflection
The problems such as with distortion, while interior light path standard energy synchronous change gain brings when outer optical path gain change to offset gain adjustment
Error, accomplish not only to guarantee signal adjustment but also do not lose precision.But often in practical applications, only adjustment APD gain is much
Inadequate, signal difference in the limiting case or excessive is not able to satisfy super amount journey, high-precision requirement.Amplifying circuit
AGC method, this mode do level-one agc circuit on receiving amplifying circuit on the basis of bifocal path technique to realize gain adjustment degree
Expand, similarly due to short distance or high inverse time, has already appeared saturation, broadening in across the resistance part sub-signal of prime, rear class AGC is
Through ineffective, the performance shown cannot still be met the requirements.
Since measurement accuracy and range are substantially contradictory relationship, reason one, measurement in the performance of rangefinder
Higher apart from nearly Signal-to-Noise, precision is high, and far measuring distance Signal-to-Noise is poor, low precision.Reason two is surveyed to increase
Transmission power is improved and simultaneously improves the gain for receiving circuit by journey, and using another problem that can induce one when this method again, that is just
Be apart from it is close when due to optical signal it is too strong caused by receive distorted signals, the blind area which will lead to rangefinder becomes larger.
Traditional ranging, signal processing mode is overly conservative, and the whole degree of receiving signal is smaller, small so as to cause ranging range
Or range accuracy is poor, how to make the whole degree of receiving signal big, system range maximizes, and non-linear distortion minimum makes at present
Laser ranging technical problem urgently to be resolved.
Summary of the invention
The purpose of the present invention is to solve above-mentioned technical problem, it is big to provide a kind of whole degree of receiving signal, system range
Height, the distance measuring method of the small laser ranging system of non-linear distortion.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of wide range high-speed, high precision TOF measurement method, it is characterised in that include wide range high-speed, high precision laser
Range-measurement system, the wide range high-speed, high precision laser ranging system include main control module, display circuit module, keyboard electricity
Road module, laser diode high-voltage driving circuit module, pulse laser emission circuit module, avalanche photodide photoelectric conversion
Circuit module, across the resistance circuit module of prime, amplifying electric circuit with auto-gain-controlling function module, time-discriminating circuit module, wherein display
Circuit module and keyboard circuit module respectively with the main control module controller control, laser diode high-voltage driving circuit module
With pulse laser emission circuit module is automatically controlled couples, laser diode high-voltage driving circuit module and the main control module are automatically controlled
Connection；Avalanche photodide photoelectric conversion circuit module, across the resistance circuit module of prime, amplifying electric circuit with auto-gain-controlling function module
And time-discriminating circuit module successively after automatically controlled connection with the main control module is automatically controlled couples, in avalanche photodide photoelectricity
Conversion circuit module, which also couples, avalanche photodide HVB high voltage bias circuit module, photodiode HVB high voltage bias circuit module
With the main control module is automatically controlled couples；The distance measuring method includes:
A. measurement apart from when, laser diode high drive modular circuit be pulse laser emission circuit modular circuit mention
Laser diode is set by changing the power for emitting driving high pressure to change Laser emission for the controllable power supply of high pressure
Transmission power gain adjustment degree is S1 to the final gain contribution value for receiving signal；
B. avalanche photodide HVB high voltage bias circuit module provides for avalanche photodide photoelectric conversion circuit module
The controllable power supply of high pressure, main control module realize avalanche photodide high pressure by exporting the PWM waveform of different duty
The adjusting of biasing circuit module mesohigh value drives high pressure to change laser pick-off module by changing avalanche photodide
Middle optical signal is converted to the yield value of current signal, and setting avalanche photodide optical signal is converted to the gain tune of current signal
Whole degree is S2 to the final gain contribution value for receiving signal；
C. across the resistance circuit module of prime is to constitute a current-to-voltage convertor, main control across resistance chip using dedicated prime
Module passes through the adjusting that transimpedance gain is realized across resistance selection end in control multiplexer；Set prime mutual conductance adjustment degree pair
The final gain contribution value for receiving signal is S3；
D. amplifying electric circuit with auto-gain-controlling function module is the amplifying circuit of two variable gain amplifier cascade compositions, is passed through
The gain control pin for controlling amplifying electric circuit with auto-gain-controlling function module realizes the gain control of signal, sets automatic growth control
The gain adjustment degree of amplification circuit module is S4 to the gain contribution value of final signal；
E. the gain adjustment degree for estimating final signal is Sb=S1*S2*S3*S4.
Further, laser diode high-voltage driving circuit module includes the transmitting high drive electricity with feedback control
Road, the circuit constitute BOOST booster circuit using PWM chip, and the main control module passes through the voltage in control feedback loop
Value emits the adjusting of high-voltage value to realize.
Further, avalanche photodide HVB high voltage bias circuit module includes the BOOST liter controlled by main control module
Volt circuit, main control module control the adjusting of the high-voltage value of BOOST booster circuit by the PWM waveform of output different duty.
Further, transmitting high-voltage driving circuit includes MOSFET pipe, and PWM chip, MOSFET pipe is N-channel MOS FET
Pipe FDC2512, PWM chip are the BOOST booster circuit controller MAX1523 of compact.
Further, avalanche photodide HVB high voltage bias circuit includes that MOSFET is managed, cache switching diodes,
MOSFET pipe is N-channel MOS FET pipe BSS123, and cache switching diodes use BAV99.
It further, include variable gain amplifier, voltage follower in amplifying electric circuit with auto-gain-controlling function module, it can
Variable-gain amplifier uses AD603ARZ, and voltage follower uses OPA695IDBVT.
The solution have the advantages that: by setting Multistage Control circuit, gain is properly increased in every level-one control circuit,
By reasonably compensating and every level-one being compensated reasonable superposition.After using the range-measurement system of the utility model, with tradition
Range-measurement system in terms of gain adjustment measure comparison, can control cause range-measurement system received signal change it is main because
Element can accomplish the adjustment degree for greatly controlling and receiving signal, accomplish to measure under same optical system farther, and precision is more
Height largely improves the detection performance of product.Severe survey is suitable for using rangefinder made by the utility model
Environment is measured, can still obtain accurate detection data in this case.After utilizing range-measurement system of the invention, with
Measure comparison of traditional range-measurement system in terms of gain adjustment, can control the master for causing range-measurement system received signal to change
Factor is wanted, can accomplish the adjustment degree for greatly controlling and receiving signal, accomplishes to measure farther, precision under same optical system
It is higher, largely improve the detection performance of product.Severe measurement is suitable for using rangefinder made by the present invention
Environment can still obtain accurate detection data in this case.
Detailed description of the invention
Invention is further described in detail with embodiment with reference to the accompanying drawing:
Fig. 1 is the principle of the present invention frame diagram；
Fig. 2 is laser diode high-voltage driving circuit figure of the invention；
Fig. 3 is avalanche photodide HVB high voltage bias circuit diagram of the invention；
Fig. 4 is across the resistance circuit figure of prime of the invention；
Fig. 5 is amplifying electric circuit with auto-gain-controlling function figure of the invention；
Specific embodiment
As shown in Fig. 1 to Fig. 5, a kind of wide range high-speed, high precision TOF measurement system, includes main control module, master control
Molding block is to provide the control module of algorithm for entire range-measurement system, in general, the main control module master for equipment control
If providing the software compensation algorithm etc. of control algolithm and measured value for entire range-measurement system, in the present invention, on main control module
It is connected with display module circuit, keyboard circuit module circuit, wherein display module circuit is used to detecting and showing metrical information,
Display mode generally comprises numeral method, and LCD screen is shown, for Laser Distance Measuring Equipment, some is then the light in equipment
Road display ranging information, keyboard circuit module circuit is for switching on and shutting down and input relevant system parameters, display module circuit, key
Disk circuit is traditional circuit, and no further details to be given herein；It further include having the laser diode in launching circuit high
Drive module circuit and laser emitting module circuit are pressed, laser diode high drive modular circuit is laser emitting module circuit
There is provided high pressure controllable power supply, to change the power of Laser emission；It further include having the avalanche photodide received in circuit
HVB high voltage bias circuit module, avalanche photodide photoelectric conversion module circuit, across the resistance circuit module of prime, AGC amplifying circuit
Module, reception gain module and TDC circuit module, wherein avalanche photodide HVB high voltage bias circuit module is avalanche optoelectronic two
Pole pipe provides high pressure controllable power supply.
As shown in Fig. 2, laser diode high-voltage driving circuit module includes the transmitting high drive electricity with feedback control
Road, the circuit are that a BOOST booster circuit is constituted using PWM chip, and main control module passes through the electricity in control feedback loop
Pressure value realizes the adjusting of transmitting high-voltage value, to a certain extent can be to avoid so that Laser emission be made to have adjustable power
The distortion such as saturation, broadening of signal when short distance or high reflection, to provide reliable guarantee for detection accuracy；The circuit includes
There is MOSFET pipe, PWM chip further includes having feedback loop, and in the present invention, MOSFET pipe is N-channel MOS FET pipe FDC2512,
In general it is not limited to FDC2512, intimate N-channel MOS FET pipe can use therewith, and PWM chip is compact
BOOST booster circuit controller MAX1523, be in general not limited to MAX1523, therewith intimate BOOST boosting
Circuit controller can use, and the 3rd foot of FDC2512 is connected with the 5th foot of MAX1523 chip, be 100PF's by capacitance
C54 that C53, capacitance are 220PF, the R26 that resistance value is 10K ohm, the R40 that resistance value is 2.2M ohm, resistance value are 30K ohm
R41 constitutes feedback loop, and the 2nd foot of MAX1523 chip is connected by R26 with main control module.
As shown in figure 3, avalanche photodide HVB high voltage bias circuit module includes the BOOST of main control module control
Booster circuit, main control module realize avalanche photodide HVB high voltage bias electricity by exporting the PWM waveform of different duty
The adjusting of road module mesohigh value, to make in received laser signal and avalanche photodide HVB high voltage bias circuit module
High-voltage value is in a linear relationship, provides reliable guarantee to a certain extent for detection accuracy and wide range；The circuit includes
MOSFET is managed, cache switching diodes, feedback loop, and in the present invention, MOSFET pipe is N-channel MOS FET pipe BSS123, high speed
Switching diode uses BAV99, is in general not limited to BSS123 and BAV99 in this circuit, therewith intimate electronics
Element can use, and the 3rd foot of BSS123 is connected with L2 and BAV99, and the 2nd foot of BSS123 is connected to the ground, and the 1st of BSS123 the
Foot is connected with main control module.
As shown in figure 4, across the resistance circuit module of prime includes being turned avalanche photodide across resistance chip using dedicated prime
The current signal to swap out is converted to the prime of voltage signal across resistance circuit, and current signal is converted to voltage by certain sensitivity
Signal, main control module realizes the selection of different sensitivities by the selection end in control multiplexer, to realize
The adjusting of transimpedance gain, this to a certain extent for detection precision, speed and wide range provide reliable guarantee；The circuit packet
Multiplexer is included, dedicated prime is across resistance chip, RC parallel circuit, is a controllable electric inside multiplexer in the present invention
Sub switch, multiplexer use high performance single-pole double throw (SPDT) analog switch NC7SB3157, and dedicated prime is across resistance chip
It is two using operational amplifier OPA657N/250, the RC parallel circuit 1 and RC parallel circuit 2 of broadband low-noise FET input
The different RC parallel circuit of parameter, the R2 parallel connection group that the C21 and resistance value that RC parallel circuit 1 is 0.1PF by capacitance are 51K ohm
At the R12 that the C23 and resistance value that RC parallel circuit 2 is 1PF by capacitance are 5.1K ohm is composed in parallel, the 1st foot of NC7SB3157
Be connected with one end of RC parallel circuit 1, the 3rd foot of NC7SB3157 is connected with one end of RC parallel circuit 2, RC parallel circuit 1 with
The other end of RC parallel circuit 2, which is connected, constitutes parallel relationship, when the 6th foot of NC7SB3157 is low level, RC parallel circuit 2
It is connected inside NC7SB3157 with its 4th foot, when the 6th foot of NC7SB3157 is high level, RC parallel circuit 1 exists
Connected with its 4th foot inside NC7SB3157, the 4th foot of OPA657N/250 and RC parallel circuit 1 and RC parallel circuit 2 it is public
End is connected, and the 2nd foot of OPA657N/250 is connected with the 4th foot of NC7SB3157.
As shown in figure 5, amplifying electric circuit with auto-gain-controlling function module includes putting for two variable gain amplifier cascade compositions
Big circuit, through the amplified voltage signal following by inputting voltages device of amplifying electric circuit with auto-gain-controlling function module, after impedance matching
Output realizes adjustment signal gain factor, this is in certain journey by controlling the gain control pin of variable gain control amplifier
Precision, speed and wide range on degree for detection provide reliable guarantee；The circuit includes that there are two variable gain amplifier, electricity
Pressing follower, in the present invention, amplifying electric circuit with auto-gain-controlling function module is made of two identical variable gain amplifiers cascades,
Variable gain amplifier uses the low distortion variable gain amplifier AD603ARZ of broadband low noise, and voltage follower uses wideband
Belt current feedback operational amplifier OPA695IDBVT, input signal are connected with the 3rd foot of first AD603ARZ, and first
The 7th foot of AD603ARZ is connected with the 3rd foot of second AD603ARZ constitutes Cascaded amplification circuit, and main control module passes through resistance value
It is connected for the R4 of 10K with the 1st foot of first AD603ARZ and second AD603ARZ, main control module is applied to by changing
The voltage of R4 and the gain factor of variable gain amplifier, the 7th foot of second AD603ARZ and the 4th foot of OPA695IDBVT
It is connected, the 1st foot of OPA695IDBVT makees output pin.
Based on the above, the present invention also proposes a kind of wide range high-speed, high precision TOF measurement method, following step is specifically included
It is rapid:
Measurement apart from when, it is controllable that laser diode high drive modular circuit for laser emitting module circuit provides high pressure
Power supply, emit driving high pressure by changing to change the power of Laser emission, the transmission power for setting laser diode increases
Beneficial adjustment degree is S1 to the final gain contribution value for receiving signal,
Avalanche photodide HVB high voltage bias circuit module provides high pressure controllable power supply for laser pick-off modular circuit, main
Control module realizes avalanche photodide HVB high voltage bias circuit module mesohigh by exporting the PWM waveform of different duty
The adjusting of value drives high pressure to be converted to electric current to change optical signal in laser pick-off module by changing avalanche photodide
The yield value of signal, the gain adjustment degree that setting avalanche photodide optical signal is converted to current signal receive signal to final
Gain contribution value be S2,
Across the resistance circuit module of prime is to constitute a current-to-voltage convertor, master control molding across resistance chip using dedicated prime
Block passes through the adjusting that transimpedance gain is realized across resistance selection end in control multiplexer；Prime mutual conductance adjustment degree is set to most
The gain contribution value of the terminating collection of letters number is S3,
Amplifying electric circuit with auto-gain-controlling function module is the amplifying circuit of two variable gain amplifier cascade compositions, passes through control
The gain control pin of amplifying electric circuit with auto-gain-controlling function module processed realizes the gain control of signal, and setting automatic growth control is put
The gain adjustment degree of big circuit module is S4 to the gain contribution value of final signal,
Due to the product that final signal gain is links gain, so the gain tune of final signal can be estimated substantially
Whole degree is Sb=S1*S2*S3*S4.By final signal gain it is found that receiving signal change to each will lead to using this method control
The factor of change can accomplish the adjustment degree for controlling and receiving signal to the greatest extent, accomplish by being comprehensively accurately controlled method
Measure farther under same optical system, precision is higher, realizes the wide range high-speed, high precision of rangefinder.
The measuring system is that single-shot penetrates single receiving light path system, and the transmitting drive module of the system can appoint in a certain range
Meaning adjustment laser emitting power, the laser reception division avalanche photodide gain of the system arbitrarily may be used in a certain range
It adjusts, the prime mutual conductance of the reception amplifier section of the system can flexibly switch under several grades of fixed value gains, and the rear class of the system connects
Receipts system can automatic growth control can obviously improve measurement result after the present invention is utilized, under traditional mode, obtain
Result as shown in table 1.1:
Table 1.1
After the present invention, the result measured is as shown in table 1.2.
Table 1.2
By above-mentioned test comparison, after applying the present invention, detection accuracy is greatly improved.
In the description of this specification, reference term " embodiment ", " some embodiments ", " an implementation
The description of example ", " some embodiments ", " example ", " specific example " or " some examples " etc. means to combine the embodiment or example
Particular features, structures, materials, or characteristics described are included at least one embodiment or example of the invention.In this explanation
In book, schematic expression of the above terms be may not refer to the same embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more of the embodiments or examples.
The above content is specific embodiment is combined, further detailed description of the invention, and it cannot be said that this hair
Bright specific implementation is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, it is not taking off
Under the premise of from present inventive concept, a number of simple deductions or replacements can also be made.
Claims (6)
1. a kind of wide range high-speed, high precision TOF measurement method, it is characterised in that include wide range high-speed, high precision Laser Measuring
Away from system, the wide range high-speed, high precision laser ranging system includes main control module, display circuit module, keyboard circuit
Module, laser diode high-voltage driving circuit module, pulse laser emission circuit module, avalanche photodide photoelectric conversion electricity
Road module, across the resistance circuit module of prime, amplifying electric circuit with auto-gain-controlling function module, time-discriminating circuit module, wherein display electricity
Road module and keyboard circuit module respectively with the main control module controller control, laser diode high-voltage driving circuit module with
The automatically controlled connection of pulse laser emission circuit module, laser diode high-voltage driving circuit module and the main control module are automatically controlled
It connects；Avalanche photodide photoelectric conversion circuit module, across the resistance circuit module of prime, amplifying electric circuit with auto-gain-controlling function module and
Time-discriminating circuit module successively after automatically controlled connection with the main control module is automatically controlled couples, turn in avalanche photodide photoelectricity
Changing circuit module and also coupling has avalanche photodide HVB high voltage bias circuit module, photodiode HVB high voltage bias circuit module with
The automatically controlled connection of main control module；The distance measuring method includes:
A. measurement apart from when, laser diode high drive modular circuit provides high pressure for pulse laser emission circuit module can
The power supply of control sets the transmission power of laser diode by changing the power for emitting driving high pressure to change Laser emission
Gain adjustment degree is S1 to the final gain contribution value for receiving signal；
B. avalanche photodide HVB high voltage bias circuit module provides high pressure for avalanche photodide photoelectric conversion circuit module
Controllable power supply, main control module realize avalanche photodide HVB high voltage bias by exporting the PWM waveform of different duty
The adjusting of circuit module mesohigh value drives high pressure to change light in laser pick-off module by changing avalanche photodide
Signal is converted to the yield value of current signal, and setting avalanche photodide optical signal is converted to the gain adjustment degree of current signal
It is S2 to the final gain contribution value for receiving signal；
C. across the resistance circuit module of prime is to constitute a current-to-voltage convertor, main control module across resistance chip using dedicated prime
Pass through the adjusting that transimpedance gain is realized across resistance selection end in control multiplexer；Prime mutual conductance adjustment degree is set to final
The gain contribution value for receiving signal is S3；
D. amplifying electric circuit with auto-gain-controlling function module is the amplifying circuit of two variable gain amplifier cascade compositions, passes through control
The gain control pin of amplifying electric circuit with auto-gain-controlling function module realizes the gain control of signal, setting automatic growth control amplification
The gain adjustment degree of circuit module is S4 to the gain contribution value of final signal；
E. the gain adjustment degree for estimating final signal is Sb=S1*S2*S3*S4.
2. a kind of wide range high-speed, high precision TOF measurement method according to claim 1, it is characterised in that the laser two
Pole pipe high-voltage driving circuit module includes the transmitting high-voltage driving circuit with feedback control, which is constituted using PWM chip
BOOST booster circuit, the main control module realize the adjusting of transmitting high-voltage value by the voltage value in control feedback loop.
3. a kind of wide range high-speed, high precision TOF measurement method according to claim 1, it is characterised in that the snowslide light
Electric diode HVB high voltage bias circuit module includes the BOOST booster circuit controlled by main control module, and main control module passes through defeated
The adjusting of the high-voltage value of the PWM waveform control BOOST booster circuit of different duty out.
4. a kind of wide range high-speed, high precision TOF measurement method according to claim 1, it is characterised in that the transmitting is high
Pressure driving circuit includes MOSFET pipe, and PWM chip, MOSFET pipe is N-channel MOS FET pipe FDC2512, and PWM chip is compact
The BOOST booster circuit controller MAX1523 of type.
5. a kind of wide range high-speed, high precision TOF measurement method according to claim 1, it is characterised in that the snowslide light
Electric diode HVB high voltage bias circuit includes MOSFET pipe, and cache switching diodes, MOSFET pipe is that N-channel MOS FET is managed
BSS123, cache switching diodes use BAV99.
6. a kind of wide range high-speed, high precision TOF measurement method according to claim 1, it is characterised in that the automatic increasing
It include variable gain amplifier, voltage follower in benefit control amplification circuit module, variable gain amplifier uses
AD603ARZ, voltage follower use OPA695IDBVT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710273407.5A CN106932783B (en) | 2017-04-21 | 2017-04-21 | A kind of wide range high-speed, high precision TOF measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710273407.5A CN106932783B (en) | 2017-04-21 | 2017-04-21 | A kind of wide range high-speed, high precision TOF measurement method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106932783A CN106932783A (en) | 2017-07-07 |
| CN106932783B true CN106932783B (en) | 2018-12-11 |
Family
ID=59438063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710273407.5A Active CN106932783B (en) | 2017-04-21 | 2017-04-21 | A kind of wide range high-speed, high precision TOF measurement method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106932783B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632307A (en) * | 2017-08-23 | 2018-01-26 | 天津大学 | Be self-regulated pulsed laser ranging system and method |
| CN108008373B (en) * | 2017-11-30 | 2021-12-10 | 上海擎朗智能科技有限公司 | Echo compensation system based on pulse type laser ranging |
| US11029397B2 (en) * | 2018-04-20 | 2021-06-08 | Omnivision Technologies, Inc. | Correlated time-of-flight sensor |
| CN108919282A (en) * | 2018-05-17 | 2018-11-30 | 北京航空航天大学 | A kind of laser radar signal moment identification system |
| WO2020047857A1 (en) * | 2018-09-07 | 2020-03-12 | 深圳市大疆创新科技有限公司 | Laser distance measurement module, apparatus, and method, and mobile platform |
| CN109669187A (en) * | 2019-01-10 | 2019-04-23 | 重庆爱特光电有限公司 | A kind of semiconductor pulse laser range finder with adaptation function |
| CN113341428B (en) * | 2021-04-27 | 2023-05-23 | 中国工程物理研究院应用电子学研究所 | Distance measurement signal processing method and signal processing circuit |
| CN113589308B (en) * | 2021-08-24 | 2024-06-07 | 洛阳顶扬光电技术有限公司 | High-sensitivity avalanche high-voltage circuit suitable for ultra-far laser ranging |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200959600Y (en) * | 2006-05-30 | 2007-10-10 | 中国计量学院 | Low-noise wide-band photoelectric receiver with automatic gain control |
| CN102529807B (en) * | 2011-12-29 | 2013-10-30 | 扬州大学 | Automobile anti-collision alarm system based on pulse laser ranging |
| CN104777470A (en) * | 2015-03-20 | 2015-07-15 | 中国科学院合肥物质科学研究院 | Circuit for expanding range of pulse laser short-range dynamic gain |
-
2017
- 2017-04-21 CN CN201710273407.5A patent/CN106932783B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106932783A (en) | 2017-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106932783B (en) | A kind of wide range high-speed, high precision TOF measurement method | |
| Hong et al. | A linear-mode LiDAR sensor using a multi-channel CMOS transimpedance amplifier array | |
| CN209117866U (en) | A kind of Larger Dynamic range optical receiving circuit based on avalanche diode | |
| Ngo et al. | Wideband receiver for a three-dimensional ranging LADAR system | |
| US10018505B2 (en) | Geiger mode APD light receiver having an active readout forming a virtual short-circuit | |
| Zheng et al. | A linear dynamic range receiver with timing discrimination for pulsed TOF imaging LADAR application | |
| Cho et al. | A high-sensitivity and low-walk error LADAR receiver for military application | |
| US8350206B2 (en) | Transimpedance amplifier circuit for converting an input current to an output voltage such circuits used for the evalutation of output signals of photo detectors, which are generating a current that is proportional to the intensity of received light | |
| CN108896979B (en) | Pulse laser radar receiving circuit and system with ultra-wide single-shot measurement range | |
| CN107632298B (en) | High-sensitivity receiving circuit applied to pulse type laser radar system | |
| CN111352097A (en) | Laser Doppler echo signal processing method for laser radar and circuit system thereof | |
| CN101174902A (en) | High dynamic range optical receiver | |
| CN113447750B (en) | Optical device test circuit | |
| CN107861112A (en) | A kind of LDMS of total regulation | |
| CN108732578A (en) | Range-finding system and it is calibrated and is determined external object distance method | |
| Khoeini et al. | A transimpedance-to-noise optimized analog front-end with high PSRR for pulsed ToF LiDAR receivers | |
| CN102323576B (en) | Gain-adjustable high-bandwidth laser receiving circuit | |
| CN108872717A (en) | A kind of small-sized transient pulse electric field measurement system | |
| CN112585491A (en) | Laser radar signal receiving circuit, laser radar signal gain control method and laser radar | |
| CN206684299U (en) | A kind of wide range high-speed, high precision LDMS | |
| US10649059B2 (en) | Multi-channel detecting system | |
| CN204206117U (en) | A kind of amplifier of creatures' physical electric signals circuit of fast detector | |
| Li et al. | A CMOS AFE With 37-nA rms Input-Referred Noise and Marked 96-dB Timing DR for Pulsed LiDAR | |
| CN102141631A (en) | High-sensitivity and wideband hydrogen or deuterium alpha spectrum line intensity measurement method and system | |
| CN209841186U (en) | CMOS self-calibration light intensity monitoring integrated circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Large Range, High Speed, and High Precision TOF Ranging Method Effective date of registration: 20231031 Granted publication date: 20181211 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: SHENZHEN MILESEEY TECHNOLOGY Co.,Ltd. Registration number: Y2023980063463 |