CN205880205U - Miniature distance measuring equipment laser emission circuit - Google Patents
Miniature distance measuring equipment laser emission circuit Download PDFInfo
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- CN205880205U CN205880205U CN201620779571.4U CN201620779571U CN205880205U CN 205880205 U CN205880205 U CN 205880205U CN 201620779571 U CN201620779571 U CN 201620779571U CN 205880205 U CN205880205 U CN 205880205U
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Abstract
The utility model discloses a miniature distance measuring equipment laser emission circuit, it includes offset voltage generator, impulse generator and drive circuit, the offset voltage generator with drive circuit circuit connection, impulse generator with drive circuit signal connection. The utility model discloses a miniature distance measuring equipment laser emission circuit control is simple, small for utilize laser pulse duration extremely short, the energy is concentrated relatively on the time, and characteristics that instantaneous power is very big more are fit for the machine and carry fields such as operation and scouting, ground tank fire control, antiaircraft gun shooting, individual combat, are used for measuring the operation target in the place ahead.
Description
Technical field
This utility model relates to a kind of miniature range finder laser control circuit, particularly relates to a kind of miniature range finder laser and sends out
Radio road.
Background technology
Either individual combat, airborne operation and scouting, be required for lightweight, the range finder using laser of small size, it is desirable to surveys
Strengthening away from ability, stability is higher.Traditional laser instrument is extremely difficult to demand, energy the most not Relatively centralized, instantaneous merit
Rate is little, and in the case of having cooperative target, pulse laser is measured apart from short, and precision is low.
For this reason, it may be necessary to the miniature range finder laser transmission circuit of design, laser pulse duration is extremely short, and energy is in the time
Upper Relatively centralized, the feature that instantaneous power is the biggest carries out finding range, and in the case of having cooperative target, pulsed laser ranging is permissible
Reach the most remote measurement distance.
Utility model content
This utility model purpose is to provide a kind of miniature range finder laser transmission circuit, and it has pulse duration pole
Short, energy Relatively centralized in time, the feature that instantaneous power is the biggest.
This utility model solves technical problem and adopts the following technical scheme that a kind of miniature range finder laser transmission circuit, its
Including bias voltage generator, pulse generator and drive circuit；
Described bias voltage generator is connected with described drive circuit circuit, described pulse generator and described drive circuit
Signal connects.
Optionally, described bias voltage generator includes switching power source control circuit, switching tube Q1 and diode D1；
Described switching power source control circuit uses model to be the chip of UC2845AD8；Described switching power source control circuit
5th pin ground connection；7th pin of described switching power source control circuit is connected to VCC power supply, described Switching Power Supply by resistance R1
7th pin of control circuit is also by electric capacity C1 ground connection, the 2nd pin of described switching power source control circuit resistance in parallel
R2 and electric capacity C2 is connected to the 1st pin of described switching power source control circuit；4th pin of described switching power source control circuit leads to
Crossing electric capacity C5 ground connection, the 8th pin of described switching power source control circuit is by the resistance R5 connected and electric capacity C5 ground connection；
6th pin of described switching power source control circuit is connected to the grid of described switching tube Q1 by resistance R3；Described
3rd pin of switching power source control circuit is connected to the source class of described switching tube Q1, and described Switching Power Supply control by resistance R9
3rd pin of circuit processed is also by electric capacity C7 ground connection；
The drain electrode of described switching tube Q1 is connected to VCC power supply by inductance L1, and the source class of described switching tube Q1 passes through resistance
R6 ground connection；
The drain electrode of described switching tube Q1 is also attached to the anode of diode D1；
The negative electrode of described diode D1 electric capacity C3 in parallel and C4 ground connection, and by resistance R4, the resistance R5 of series connection
With resistance R6 ground connection, electric capacity C6 is parallel to resistance R7 and resistance R8, and the 2nd pin of described switching power source control circuit is also by electricity
Resistance R10 and electric capacity C6 ground connection.
Optionally, described pulse generator is single-chip microcomputer or CPLD.
Optionally, described drive circuit includes driver, switching tube Q20 and diode D20；
Described driver uses model to be the chip of IRS44237L；The IO output pin of described pulse generator is with described
The IN pin of driver connects, and described IN pin is also by resistance R24 ground connection, and the GND pin ground connection of described driver is described
The VCC pin of driver is connected to VCC power supply, and the OUT pin of described driver is connected to switching tube Q20's by resistance R21
Grid, the source class ground connection of described switching tube Q20, the drain electrode of described switching tube Q20 is connected to described diode D1 by resistance R22
Negative electrode, the source class of described switching tube Q20 is also attached to one end of electric capacity C21, and the other end of electric capacity C21 is connected to diode
The anode of D20, the minus earth of described diode D20, the anode of described diode D20 is connected to the moon of semiconductor laser
Pole, the anode of described semiconductor laser passes through resistance R23 ground connection.
This utility model has the advantages that miniature range finder laser transmission circuit of the present utility model controls letter
Single, volume is little so that utilize laser pulse duration extremely short, energy Relatively centralized in time, the spy that instantaneous power is the biggest
Point, is more suitable for the field such as airborne operation and scouting, ground Tank Fire Control, antiaircraft gun shooting, individual combat, for measuring the work in front
War target.
Accompanying drawing explanation
Fig. 1 is the structural representation of bias voltage generator of the present utility model；
Fig. 2 is the structural representation of pulse generator of the present utility model and drive circuit；
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the technical solution of the utility model is further elaborated.
Embodiment 1
Present embodiments providing a kind of miniature range finder laser transmission circuit, it includes the biasing of semiconductor laser (LD)
The drive circuit of voltage generator, pulse generator and semiconductor laser.
Described semiconductor laser bias voltage generator is the bias high voltage needed for semiconductor laser offer work, its
It is the switching power source control circuit of UC2845AD8, switching tube Q1 (MOSFET) and diode D1 including model.
5th pin ground connection of described switching power source control circuit (PWM drive circuit)；Its 7th pin is by resistance R1 even
It is connected to VCC power supply, and this pin is also by electric capacity C1 ground connection, to form filter circuit, filter by described resistance R1 and electric capacity C1
Fall high-frequency noise, thus provide stable supply of electric power to described switching power source control circuit；Described switching power source control circuit
The 2nd pin resistance R2 in parallel and electric capacity C2 be connected to the 1st pin of described switching power source control circuit；Described switch
4th pin of power control circuit passes through electric capacity C5 ground connection, and the 8th pin of described switching power source control circuit is by the electricity of series connection
Resistance R5 and electric capacity C5 ground connection.
6th pin of described switching power source control circuit is connected to the grid of described switching tube Q1 by resistance R3；Described
3rd pin of switching power source control circuit is connected to the source class of described switching tube Q1 by resistance R9, and the 3rd pin also by
Electric capacity C7 ground connection.
The drain electrode of described switching tube Q1 is connected to VCC power supply by inductance L1, and the source class of described switching tube Q1 passes through resistance
R6 ground connection.
The drain electrode of described switching tube Q1 is also attached to the anode of diode D1, and the negative electrode of described diode D1 is biased electrical
Pressure VH.
The negative electrode of described diode D1 electric capacity C3 in parallel and C4 ground connection, and by resistance R4, the resistance R5 of series connection
With resistance R6 ground connection, electric capacity C6 is parallel to resistance R7 and resistance R8, and the 2nd pin of described switching power source control circuit is also by electricity
Resistance R10 and electric capacity C6 ground connection.
The oscillating circuit of described resistance R5 and electric capacity C5 composition switching power source control circuit, the resistance of resistance R5 and electric capacity C5
Capacitive reactance determine the switching frequency of switching power source control circuit.Described switching power source control circuit is defeated by PWM by resistance R3
Going out to switching tube Q1, control opening and turning off of switching tube Q1, resistance R3 act as driving current-limiting resistance, and described resistance R6 is
Inspection stream electric current, for detecting the peak point current of switching tube Q1, when flowing through the voltage of resistance R6 more than 1V, through resistance R9 and electricity
The filter network holding C7 composition passes to the 3rd pin of switching power source control circuit, and then turns off switching power source control circuit
The PWM output of the 6th pin.
Described resistance R4, resistance R7, resistance R8 and electric capacity C6 are output voltage feedback circuit.I.e. bleeder circuit, from resistance
R4 takes out detection voltage with the voltage of resistance R7 intermediate node and is connected with switching power source control circuit the 2nd pin through resistance R10,
Electric capacity C6 effect mainly prevents High-frequency Interference, can improve load regulation in high-power.
The feedback network of resistance R2 and electric capacity C2 composition switching power source control circuit, i.e. proportional integral link, with the most slow
The output voltage pace of change of solution limited current state amplifier once, and contribute to eliminating some High-frequency Interference.Described electric capacity C3 and
Electric capacity C4 is output filter capacitor, filters some switching noises.
Described pulse generator is single-chip microcomputer or CPLD, and described single-chip microcomputer can produce pulsewidth 20ns～50ns, weight
Complex frequency is the pulse signal of 2.5kHZ, as the switching signal of semiconductor laser device driving circuit.
Described drive circuit includes that model is the driver of IRS44237L, switching tube Q20 and diode D20.
The IO output pin of described single-chip microcomputer is connected with the IN pin of described driver, and this IN pin is also by resistance
R24 ground connection, the GND pin ground connection of described driver, the VCC pin of described driver is connected to VCC power supply, described driver
OUT pin is connected to the grid of switching tube Q20, the source class ground connection of described switching tube Q20, described switching tube Q20 by resistance R21
Drain electrode be connected to the negative electrode of described diode D1 by resistance R22, the source class of described switching tube Q20 is also attached to electric capacity C21
One end, the other end of electric capacity C21 is connected to the anode of diode D20, the minus earth of described diode D20, described two poles
The anode of pipe D20 is connected to the negative electrode of semiconductor laser, and the anode of described semiconductor laser passes through resistance R23 ground connection.
Wherein, resistance R22 is charging current limiter resistance, and resistance R23 is pulse current current-limiting resistance, and electric capacity C21 is energy storage electricity
Holding, VH is input HVB high voltage bias (bias voltage), and diode D20 is clamp diode, when switching tube Q20 disconnects, and biased electrical
Pressure VH is charged to storage capacitor C21 by resistance R22, and the voltage at electric capacity C21 two ends raises immediately, after charging complete, and energy storage electricity
The voltage holding two ends is i.e. equal with HVB high voltage bias voltage VH, and after switching tube Q20 closes, storage capacitor C21 passes through switching tube
The loop instantaneous discharge that Q20, electric discharge current-limiting resistance R23 and semiconductor laser are formed, is added in semiconductor laser two ends
Voltage be-VH.
In described miniature range finder laser transmission circuit, in described impulse semiconductor laser drive circuit, pass through
Change bias voltage VH, resistance R22, electric capacity C21, the size of resistance R23 parameter, the i.e. its peak work of scalable output laser pulse
Rate, pulse width and repetition rate.Bias voltage VH is the highest, and storage capacitor C21 is the biggest, electric discharge current-limiting resistance R23 resistance is the least,
The laser peak power then exported is the biggest；If storage capacitor C21 is the least, the resistance of resistance R23 is the least, then the width of laser pulse
Spend the narrowest；The resistance of resistance R22 is the least, then the repetition rate of laser pulse is the highest.
Opening of described switching tube Q20 is produced by described pulse generator with turning off, and produced pulse is through driver
Being driven, the effect of described driver is to ensure that switching tube Q20 keeps good opening and turning off.
The sequencing of above example only for ease of describing, does not represent the quality of embodiment.
Last it is noted that above example is only in order to illustrate the technical solution of the utility model, it is not intended to limit；
Although this utility model being described in detail with reference to previous embodiment, it will be understood by those within the art that:
Technical scheme described in foregoing embodiments still can be modified by it, or carries out wherein portion of techniques feature
With replacing；And these amendments or replacement, do not make the essence of appropriate technical solution depart from this utility model each embodiment technology
The spirit and scope of scheme.
Claims (4)
1. a miniature range finder laser transmission circuit, it is characterised in that include bias voltage generator, pulse generator and drive
Galvanic electricity road；
Described bias voltage generator is connected with described drive circuit circuit, described pulse generator and described drive circuit signal
Connect.
Miniature range finder laser transmission circuit the most according to claim 1, it is characterised in that described bias voltage generator
Including switching power source control circuit, switching tube Q1 and diode D1；
Described switching power source control circuit uses model to be the chip of UC2845AD8；5th pipe of described switching power source control circuit
Foot ground connection；7th pin of described switching power source control circuit is connected to VCC power supply by resistance R1, and described Switching Power Supply controls
7th pin of circuit also by electric capacity C1 ground connection, the 2nd pin of described switching power source control circuit resistance R2 in parallel and
Electric capacity C2 is connected to the 1st pin of described switching power source control circuit；4th pin of described switching power source control circuit is by electricity
Holding C5 ground connection, the 8th pin of described switching power source control circuit is by the resistance R5 connected and electric capacity C5 ground connection；
6th pin of described switching power source control circuit is connected to the grid of described switching tube Q1 by resistance R3；Described switch
3rd pin of power control circuit is connected to the source class of described switching tube Q1 by resistance R9, and described Switching Power Supply controls electricity
3rd pin on road is also by electric capacity C7 ground connection；
The drain electrode of described switching tube Q1 is connected to VCC power supply by inductance L1, and the source class of described switching tube Q1 is connect by resistance R6
Ground；
The drain electrode of described switching tube Q1 is also attached to the anode of diode D1；
The negative electrode of described diode D1 electric capacity C3 in parallel and C4 ground connection, and by resistance R4, resistance R5 and the electricity of series connection
Resistance R6 ground connection, electric capacity C6 is parallel to resistance R7 and resistance R8, and the 2nd pin of described switching power source control circuit is also by resistance
R10 and electric capacity C6 ground connection.
Miniature range finder laser transmission circuit the most according to claim 2, it is characterised in that described pulse generator is single
Sheet machine or CPLD.
Miniature range finder laser transmission circuit the most according to claim 3, it is characterised in that described drive circuit includes driving
Dynamic device, switching tube Q20 and diode D20；
Described driver uses model to be the chip of IRS44237L；The IO output pin of described pulse generator and described driving
The IN pin of device connects, and described IN pin is also by resistance R24 ground connection, the GND pin ground connection of described driver, described driving
The VCC pin of device is connected to VCC power supply, and the OUT pin of described driver is connected to the grid of switching tube Q20 by resistance R21,
The source class ground connection of described switching tube Q20, the drain electrode of described switching tube Q20 is connected to the moon of described diode D1 by resistance R22
Pole, the source class of described switching tube Q20 is also attached to one end of electric capacity C21, and the other end of electric capacity C21 is connected to diode D20's
Anode, the minus earth of described diode D20, the anode of described diode D20 is connected to the negative electrode of semiconductor laser, described
The anode of semiconductor laser passes through resistance R23 ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620779571.4U CN205880205U (en) | 2016-07-22 | 2016-07-22 | Miniature distance measuring equipment laser emission circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620779571.4U CN205880205U (en) | 2016-07-22 | 2016-07-22 | Miniature distance measuring equipment laser emission circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205880205U true CN205880205U (en) | 2017-01-11 |
Family
ID=57697019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620779571.4U Expired - Fee Related CN205880205U (en) | 2016-07-22 | 2016-07-22 | Miniature distance measuring equipment laser emission circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205880205U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436431A (en) * | 2017-07-17 | 2017-12-05 | 南京理工大学 | A kind of pulse laser emission circuit |
| CN111670378A (en) * | 2019-01-09 | 2020-09-15 | 深圳市大疆创新科技有限公司 | Light emitting device, distance measuring device and mobile platform |
| CN113109788A (en) * | 2020-01-13 | 2021-07-13 | 华为技术有限公司 | Pulse emission control circuit and control method |
| CN113287237A (en) * | 2019-12-20 | 2021-08-20 | 深圳市速腾聚创科技有限公司 | Laser emission circuit and laser radar |
-
2016
- 2016-07-22 CN CN201620779571.4U patent/CN205880205U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436431A (en) * | 2017-07-17 | 2017-12-05 | 南京理工大学 | A kind of pulse laser emission circuit |
| CN111670378A (en) * | 2019-01-09 | 2020-09-15 | 深圳市大疆创新科技有限公司 | Light emitting device, distance measuring device and mobile platform |
| CN113287237A (en) * | 2019-12-20 | 2021-08-20 | 深圳市速腾聚创科技有限公司 | Laser emission circuit and laser radar |
| CN113287237B (en) * | 2019-12-20 | 2023-08-04 | 深圳市速腾聚创科技有限公司 | Laser emission circuit and laser radar |
| CN113109788A (en) * | 2020-01-13 | 2021-07-13 | 华为技术有限公司 | Pulse emission control circuit and control method |
| WO2021143601A1 (en) * | 2020-01-13 | 2021-07-22 | 华为技术有限公司 | Pulse emission control circuit and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20190722 |