CN208337966U - A kind of temperature-adjusting circuit for laser range finder light source - Google Patents
A kind of temperature-adjusting circuit for laser range finder light source Download PDFInfo
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- CN208337966U CN208337966U CN201820410654.5U CN201820410654U CN208337966U CN 208337966 U CN208337966 U CN 208337966U CN 201820410654 U CN201820410654 U CN 201820410654U CN 208337966 U CN208337966 U CN 208337966U
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- temperature
- light source
- range finder
- laser range
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Abstract
The utility model discloses a kind of temperature-adjusting circuits for laser range finder light source, including power-switching circuit, communicating circuit, photoelectric isolating circuit, amplification and driving circuit, information acquisition circuit, single-chip microcontroller and A/D conversion circuit, host computer and semiconductor refrigerating heat-producing machine, single-chip microcontroller and A/D conversion circuit sample by temperature of the information acquisition circuit to laser range finder light source module and signal are sent to host computer by communicating circuit, host computer generates PID pulse drive signal by communicating circuit control single chip computer and A/D conversion circuit, photoelectric isolating circuit works to control the temperature of laser range finder light source module by amplification and driving circuit driving semiconductor refrigerating heat-producing machine after receiving PID pulse drive signal.The utility model has rich interface, simple and easy to use；Temperature can be set by host computer, complete to control by PID temperature controlling mode, temperature control precision and high resolution, up to 0.01 DEG C；Have many advantages, such as overcurrent-overvoltage and overheat protector function.
Description
Technical field
The utility model relates to a kind of temperature-adjusting circuits, and in particular to a kind of temperature-adjusting circuit for laser range finder light source,
Belong to electronic technology field.
Background technique
Laser range finder is the instrument that Accurate Determining is carried out using the distance of some parameters on target of modulation laser.Pulse
Formula laser range finder is to project pulse laser beam a branch of or that a sequence is of short duration to target at work, receives mesh by photoelectric cell
The laser beam of reflection is marked, timer measures laser beam from the received time is emitted to, calculates from rangefinder range-to-go.
When the laser beam power of transmitting is enough, ranging is even farther up to 40 kilometers or so.When continuous use, rangefinder
The subtle temperature change of interior device can generate common avalanche optoelectronic in error, especially photoelectric conversion to the measurement of time
Diode, because of its intrinsic electrical characteristic, when long-time causes internal temperature to increase using laser range finder, carrier ionization
Coefficient increases with temperature and is declined, and causes multiplication factor to reduce, breakdown voltage raising, to cause the reduction of measurement accuracy.
Laser LED light source frequency spectrum drifts about in order to prevent, need to accurately control LED chip temperature, therefore, develop one kind and pass through
Semiconductor refrigerating heat-producing machine driving current or voltage are controlled, keeps rangefinder light source module temperature to stablize, to guarantee light source light
Composing the stable temperature-adjusting circuit for laser range finder light source is very important, and the utility model also has important application
Prospect.
Summary of the invention
To solve the deficiencies in the prior art, the purpose of this utility model is to provide one kind to pass through control semiconductor refrigerating system
Hot device driving current or voltage keep rangefinder light source module temperature to stablize, thus guarantee light source light spectrum it is stable for laser
The temperature-adjusting circuit of range finder light source.
In order to achieve the above objectives, the utility model adopts the following technical solutions:
A kind of temperature-adjusting circuit for laser range finder light source, including power-switching circuit (1), communicating circuit (2), photoelectricity
Isolation circuit (3), amplification and driving circuit (4), information acquisition circuit (5), single-chip microcontroller and A/D conversion circuit (6), host computer
(7) and semiconductor refrigerating heat-producing machine (8), the single-chip microcontroller and A/D conversion circuit (6) are right by the information acquisition circuit (5)
The temperature of laser range finder light source module carries out sampling and signal is sent to the host computer (7) by the communicating circuit (2),
The host computer (7) controls the single-chip microcontroller by the communicating circuit (2) and A/D conversion circuit (6) generates PID pulsed drive
Signal, the photoelectric isolating circuit (3) are driven after receiving PID pulse drive signal by the amplification and driving circuit (4)
Semiconductor refrigerating heat-producing machine (8) work is to control the temperature of laser range finder light source module.
It is previously described for the temperature-adjusting circuit of laser range finder light source, the information of information acquisition circuit (5) acquisition includes
But it is not limited to the following terms: temperature signal, current signal, voltage signal.
It is previously described for the temperature-adjusting circuit of laser range finder light source, the amplification and driving circuit (4) driving is described partly leads
The signal of body refrigerating and heating device (8) is the pulse signal that positive and negative anodes can convert, and pulse signal voltage range is 5 volt of -36 volt, arteries and veins
Rushing signal drive current range is 300 milliamperes -3000 milliamperes, and pulse signal duty ratio is adjustable.
It is previously described for the temperature-adjusting circuit of laser range finder light source, the photoelectric isolating circuit (3) has physical isolation sense
Property the negative pulse that generates of element interfere the functions of other equipment.
It is previously described for the temperature-adjusting circuit of laser range finder light source, the communication interface of the communicating circuit (2) includes but not
It is limited to the following terms: RS485 interface, RS232 interface, CAN interface.
It is previously described for the temperature-adjusting circuit of laser range finder light source, the supply voltage of power-switching circuit (1) input
Range is 5 volt of -36 volt, and the peak value pulse duty cycle of output voltage is adjustable.
The utility model has the beneficial effect that
(1) rich interface, communicating circuit support RS232 interface, RS485 interface and CAN bus interface, letter easy to use
It is single；
(2) temperature can be set by host computer, completes to control by PID temperature controlling mode, temperature control precision and resolution ratio
Height, up to 0.01 DEG C；
(3) it is acquired by intelligence sample circuit and single-chip microcontroller and A/D conversion circuit completes sampling, conversion and control, had
Overcurrent-overvoltage and overheat protector function.
Detailed description of the invention
Fig. 1 is that the composition of a specific embodiment of the temperature-adjusting circuit for laser range finder light source of the utility model shows
It is intended to.
Wherein:
1- power-switching circuit 2- communicating circuit
3- photoelectric isolating circuit 4- amplification and driving circuit
5- information acquisition circuit 6- single-chip microcontroller and A/D conversion circuit
7- host computer 8- semiconductor refrigerating heat-producing machine.
Specific embodiment
Specific introduce is made to the utility model below in conjunction with the drawings and specific embodiments.
Referring to Fig.1, the temperature-adjusting circuit for laser range finder light source of the utility model, including it is power-switching circuit 1, logical
Interrogate circuit 2, photoelectric isolating circuit 3, amplification and driving circuit 4, information acquisition circuit 5, single-chip microcontroller and A/D conversion circuit 6, upper
Machine 7 and semiconductor refrigerating heat-producing machine 8, single-chip microcontroller and A/D conversion circuit 6 are by information acquisition circuit 5 to laser range finder light source
The temperature of module carries out sampling and signal is sent to host computer 7 by communicating circuit 2, and host computer 7 controls list by communicating circuit 2
Piece machine and A/D conversion circuit 6 generate PID pulse drive signal, and photoelectric isolating circuit 3 leads to after receiving PID pulse drive signal
It crosses amplification and driving circuit 4 drives the work of semiconductor refrigerating heat-producing machine 8 to control the temperature of laser range finder light source module.
As a preferred solution, the information that information acquisition circuit 5 acquires includes but is not limited to the following terms: temperature letter
Number, current signal, voltage signal.
As a preferred solution, it is positive and negative that amplification and driving circuit 4, which drive the signal of semiconductor refrigerating heat-producing machine 8,
The pulse signal that can extremely convert, pulse signal voltage range are 5 volt of -36 volt, and pulse signal drive current range is 300 millis
Amp- 3000 milliamperes, pulse signal duty ratio is adjustable.
As a preferred solution, the negative pulse interference that there is photoelectric isolating circuit 3 physical isolation inductive element to generate
The function of other equipment.
As a preferred solution, the communication interface of communicating circuit 2 includes but is not limited to the following terms: RS485 interface,
RS232 interface, CAN interface.
As a preferred solution, the supply voltage range that power-switching circuit 1 inputs is 5 volt of -36 volt, output electricity
The peak value pulse duty cycle of pressure is adjustable.
It should be noted that the above is only the preferred embodiment of the present invention, it is practical not new to limit this
Type, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of utility model.
Claims (6)
1. a kind of temperature-adjusting circuit for laser range finder light source, which is characterized in that including power-switching circuit (1), communication electricity
Road (2), photoelectric isolating circuit (3), amplification and driving circuit (4), information acquisition circuit (5), single-chip microcontroller and A/D conversion circuit
(6), host computer (7) and semiconductor refrigerating heat-producing machine (8), the single-chip microcontroller and A/D conversion circuit (6) pass through the information collection
Circuit (5) sample and is sent to signal by the communicating circuit (2) described to the temperature of laser range finder light source module
Host computer (7), the host computer (7) controls the single-chip microcontroller by the communicating circuit (2) and A/D conversion circuit (6) generates
PID pulse drive signal, the photoelectric isolating circuit (3) receive after PID pulse drive signal through the amplification and driving
Circuit (4) drives semiconductor refrigerating heat-producing machine (8) work to control the temperature of laser range finder light source module.
2. the temperature-adjusting circuit of laser range finder light source according to claim 1, which is characterized in that the information acquisition circuit
(5) information acquired includes but is not limited to the following terms: temperature signal, current signal, voltage signal.
3. the temperature-adjusting circuit of laser range finder light source according to claim 1, which is characterized in that the amplification and driving electricity
The signal of road (4) the driving semiconductor refrigerating heat-producing machine (8) is the pulse signal that positive and negative anodes can convert, pulse signal voltage
Range is 5 volt of -36 volt, and pulse signal drive current range is 300 milliamperes -3000 milliamperes, and pulse signal duty ratio is adjustable.
4. the temperature-adjusting circuit of laser range finder light source according to claim 1, which is characterized in that the photoelectric isolating circuit
(3) have the function of that being physically isolated the negative pulse that inductive element generates interferes other equipment.
5. the temperature-adjusting circuit of laser range finder light source according to claim 1, which is characterized in that the communicating circuit (2)
Communication interface include but is not limited to the following terms: RS485 interface, RS232 interface, CAN interface.
6. the temperature-adjusting circuit of laser range finder light source according to claim 1, which is characterized in that the power-switching circuit
(1) the supply voltage range inputted is 5 volt of -36 volt, and the peak value pulse duty cycle of output voltage is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820410654.5U CN208337966U (en) | 2018-03-26 | 2018-03-26 | A kind of temperature-adjusting circuit for laser range finder light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820410654.5U CN208337966U (en) | 2018-03-26 | 2018-03-26 | A kind of temperature-adjusting circuit for laser range finder light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208337966U true CN208337966U (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820410654.5U Active CN208337966U (en) | 2018-03-26 | 2018-03-26 | A kind of temperature-adjusting circuit for laser range finder light source |
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| CN (1) | CN208337966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108200712A (en) * | 2018-03-26 | 2018-06-22 | 江苏亮点光电科技有限公司 | A kind of temperature-adjusting circuit for laser range finder light source |
-
2018
- 2018-03-26 CN CN201820410654.5U patent/CN208337966U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108200712A (en) * | 2018-03-26 | 2018-06-22 | 江苏亮点光电科技有限公司 | A kind of temperature-adjusting circuit for laser range finder light source |
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