CN109302168A - A kind of close switch of laser - Google Patents
A kind of close switch of laser Download PDFInfo
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- CN109302168A CN109302168A CN201811127611.7A CN201811127611A CN109302168A CN 109302168 A CN109302168 A CN 109302168A CN 201811127611 A CN201811127611 A CN 201811127611A CN 109302168 A CN109302168 A CN 109302168A
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- Prior art keywords
- laser
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- ground connection
- signal
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- 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
-
- 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
- G01S17/50—Systems of measurement based on relative movement of target
- G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/14—Modifications for compensating variations of physical values, e.g. of temperature
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/941—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated using an optical detector
- H03K2217/94102—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated using an optical detector characterised by the type of activation
- H03K2217/94108—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated using an optical detector characterised by the type of activation making use of reflection
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electronic Switches (AREA)
Abstract
The invention discloses a kind of close switches of laser, belong to close to switching technique field, be based on laser ranging with test the speed close to switch, using the execution of single-chip microcontroller control laser aid and temperature-compensation circuit, laser aid generates Laser emission and receives laser, measurement is at a distance from target and target velocity, perception measures the close of target, laser signal is converted into electric signal and is transmitted to single-chip microcontroller, temperature signal and temperature signal are converted to electric signal and are transmitted to single-chip microcontroller by temperature-compensation circuit simultaneously, single-chip microcontroller combines temperature difference temperature signal to carry out calculating output control command based on the received electrical signal, when solving survey calculation data in practical applications, it easily receives the interference in temperature and magnetic field etc. in environment and causes error larger, control the problem of inaccuracy, it can be applied to lathe, metallurgy, chemical industry, the industries such as light textile and printing, automatically it is controlling It can be used as limit, counting, location control and automatic protection link etc. in system processed.
Description
Technical field
The present invention provides a kind of close switch of laser, belongs to close to switching technique field, is based on laser ranging and to test the speed
Close to switch.
Background technique
It is a kind of without carrying out mechanically direct contact and manipulable position switch with moving component close to switch, works as object
When body is close to the sensitive surface of switch to operating distance, switch motion can be made by not needing Mechanical Contact and any pressure of application, from
And it drives DC electric apparatus or provides control instruction to computer (plc) device.It is kind of a switch-type sensor (i.e. oncontacting close to switch
Point switch), the characteristic of its existing travel switch, microswitch, while there are sensing capabilities, be widely used in lathe, metallurgy,
The industries such as chemical industry, light textile and printing.It can be used as limit, counting, location control and automatic protection link in automatic control system
Deng.But it is existing to be easily affected by the surrounding environment close to switch, such as temperature, magnetic field, it fluctuates, deposits because magnetic field is generated vulnerable to interference
Detecting and calculating the larger problem of data error, a kind of laser disclosed by the invention is close to switch, using speed measured,
No magnetic field is disturbed unstable unfavorable factor, then adds temperature-compensation circuit, weakens the influence of temperature, can more accurately detect
Calculate data.
Summary of the invention
It is an object of the invention to: a kind of close switch of laser is provided, solves survey calculation data in practical applications
When, easily receive the interference in temperature and magnetic field etc. in environment and cause error larger, control the problem of inaccuracy, can be applied to lathe,
The industries such as metallurgy, chemical industry, light textile and printing can be used as limit, counting, location control and automatic protection in automatic control system
Link etc..
The technical solution adopted by the invention is as follows:
A kind of close switch of laser, it is characterised in that: including a shell, include: in shell
Laser aid: for generating Laser emission and receiving laser, measurement is at a distance from target and target velocity, by laser
Signal is defeated by single-chip microcontroller；
Temperature-compensation circuit: measurement temperature deviation is converted to electric signal, is defeated by single-chip microcontroller；
Single-chip microcontroller: carrying out relevant calculation in conjunction with laser signal and temperature signal, then exports control command control laser aid
With the execution of switch.
Further, the close switch of a kind of laser according to claim 1, it is characterised in that: further include in shell
Rechargeable battery and the action indicator outside shell, action indicator by single-chip microcontroller control according to close to switch movement carry out
Corresponding instruction.
Further, a kind of close switch of laser according to claim 1, it is characterised in that: the laser aid packet
Include laser head, laser pickoff and the laser emitter being connected with laser head, laser emitter and laser head and single-chip microcontroller phase
Even, laser pickoff is connected with single-chip microcontroller, and laser pickoff reception is launched by what laser emitter generated by laser head
The laser that back reflection is returned, and the laser received is converted into electric signal and is defeated by single-chip microcontroller.
Further, a kind of close switch of laser according to claim 1, it is characterised in that: the temperature-compensating electricity
Road includes temperature measuring circuit for measuring temperature and output temperature signal and for measuring the temperature difference and exporting temperature signal
Differential temperature survey circuit.
Further, a kind of close switch of laser according to claim 4, it is characterised in that: the temperature measurement electricity
Road includes a temperature sensor, signal amplification circuit, filter circuit and shunt capacitance circuit, the differential temperature survey circuit packet
Two temperature sensors, signal amplification circuit, filter circuit and shunt capacitance circuit are included, temperature sensor temperature collection signal is logical
Signal amplification circuit amplification is crossed, is defeated by the processing that single-chip microcontroller carries out data after invalid high-frequency noise is filtered out using filter circuit
With calculating.
Further, a kind of close switch of laser according to claim 5, it is characterised in that: the temperature measurement electricity
Road includes temperature sensor D2, resistance R2, R3, R4, R5, R6, R7, R12, R13, R14, capacitor C2, C3, C4, C6, C7, C9,
C12, C13, C16, electrolytic capacitor C17, operational amplifier U1, U2, U5, circuit composition are as follows: D2 anode meets VCC1, and D2 cathode connects
One end of R2, the other end of R2 connect one end of C2 respectively and connect the port IN- of U1, and the port that C2 is connected with R2 connects U1's simultaneously
The port IN-, the other end ground connection of C2, C3 mono- terminate D2 cathode, C3 other end ground connection, and C4 mono- terminates the common end of C3 and R2, C4
The common end of another termination C2 and R2, the port IN+ of a termination U1 of R3, the other end ground connection of R3, the ground connection of U1 terminate VCC1,
The power supply of U1 terminates VCC2, one end of the zeroing termination C6 of U1, and the other end of C6 is grounded, and R4 mono- terminates the port IN- of U1, and R4 is another
The OUT terminal mouth of one termination U1, C9 is in parallel with R4, and the OUT terminal mouth of U1 meets one end of R5, the port IN- of another termination U2 of R5, U2
The port IN+ connect one end of R6, the other end ground connection of R6, the ground connection of U2 terminates VCC1, and the power supply of U2 terminates VCC2, and R7 mono- is terminated
The port IN- of U2, the OUT terminal mouth of another termination U2 of R7, C7 is in parallel with R7, and the OUT terminal mouth of U2 exports amplified signal to filtered electrical
Road, the one end R12 connect with the OUT terminal mouth of U2, and the other end is connected with R13, the port IN+ of the other end connection U5 of R13, C12's
One end connects the common end of R12 and R13, and the other end is separately connected OUT terminal mouth and the port IN- of U5, and the one end C13 connects the IN of U5
+ port, other end ground connection, the power supply of U5 terminate VCC2, and ground terminal ground connection, the one end resistance R14 connects the OUT terminal mouth of U5, another
End ground connection, the OUT terminal mouth of U5 export amplified signal to monolithic, and the place VCC1 is equipped with shunt capacitance condenser network, electrolytic capacitor C17
In parallel with capacitor C16, electrolytic capacitor C17 cathode ground connection, anode meets VCC1, and wherein D2 measures the temperature of external environment.
Further, a kind of close switch of laser according to claim 5, it is characterised in that: the differential temperature survey electricity
Road includes temperature sensor D1, D2, resistance R0, R1, R2, R8, R9, R10, R11, R15, R16, R17, capacitor C1, C2, C3, C4,
C5, C10, C14, C15, C18, electrolytic capacitor C19, operational amplifier U3, U4, U6, circuit composition are as follows: D2 anode meets VCC1,
Cathode connects one end of R2, the port IN+ of another termination U3 of another termination R0 of R2, R0, and the one end C1 is grounded another termination R1, R1
Another termination U3 the port IN+, C5 mono- terminate Cl and R1 common end, C5 it is another termination C2 and R2 common end, the one end R12
The common end in Cl and R1, another port IN- for terminating at U3 are connect, D1 cathode meets VCC2, and anode connects R12, the ground connection termination of U3
The power supply of VCC1, U3 terminate VCC2, one end of the zeroing termination C10 of U3, the other end ground connection of C10, the IN- of the termination of R11 mono- U3
Port, the OUT terminal mouth of another termination U3 of R11, the OUT terminal mouth of U3 meet one end of R9, the port IN- of another termination U4 of R9, U4
The port IN+ connect one end of R8, the other end ground connection of R8, the ground connection of U4 terminates VCC1, and the power supply of U4 terminates VCC2, the one end R10
The port IN- of U4, the OUT terminal mouth of another termination U4 of R10 are connect, the OUT terminal mouth of U2 exports amplified signal to filter circuit, R15 mono-
End connects with the OUT terminal mouth of U6, and the other end is connected with R16, the port IN+ of the other end connection U6 of R16, one end connection of C14
The common end of R15 and R16, the other end are separately connected OUT terminal mouth and the port IN- of U6, and the one end C15 connects the port IN+ of U6, separately
One end ground connection, the power supply of U6 terminate VCC2, ground terminal ground connection, and the one end resistance R17 connects the OUT terminal mouth of U6, other end ground connection, U6
OUT terminal mouth amplified signal is exported to single-chip microcontroller, shunt capacitance condenser network, electrolytic capacitor C19 and capacitor are equipped at VCC2
C18 is in parallel, and electrolytic capacitor C19 cathode ground connection, anode meets VCC2, and wherein D1 measures the temperature at laser pickoff.
Further, the close switch of a kind of laser according to claim 1, it is characterised in that: the single-chip microcontroller passes through
Wireless telecommunications are attached with host computer.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1. in the present invention, using the execution of single-chip microcontroller control laser aid and temperature-compensating part, laser aid, which generates, to swash
Light emitting and reception laser, measurement, with target velocity, perceive the close of measurement target, laser signal are converted at a distance from target
It is transmitted to single-chip microcontroller for electric signal, while temperature signal is converted to electric signal and is transmitted to single-chip microcontroller, single-chip microcontroller root by temperature-compensating part
It carries out calculating output control command according to the laser signal and temperature signal that receive, calculating data can be made more accurate, weaken ring
Border is to the influence close to switch.
2. the mode that the laser aid is combined using ranging and by the way of testing the speed approaches the movement of switch to control, can
To carry out flexible control in real time according to the case where measurement target, make more flexible effectively close to the control of switch.
3. using rechargeable battery, avoid the problem that caused close switch stops working under power failure or other power blackout situations,
It is convenient simultaneously to be moved at any time close to switch.
4. filter circuit and shunt capacitance circuit, filter circuit are added in temperature-compensation circuit to be filtered out in amplified signal
Invalid high frequency noise, shunt capacitance circuit filter out the high frequency spurs in power supply signal, error are effectively reduced, and improve temperature measurement
Accuracy, solve the problems, such as to cause measurement error larger because of influence of noise when temperature measurement.
5. single-chip microcontroller is connected by wireless telecommunications with host computer, communicate wirelessly, it is convenient, flexible.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is laser of the present invention close to switch plane schematic diagram
Fig. 2 is temperature-compensation circuit figure of the present invention
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
A kind of close switch of laser, using the execution of single-chip microcontroller control laser aid and temperature-compensating part, laser aid
Generation Laser emission and reception laser, measurement, with target velocity, perceive at a distance from target and measure the close of target, laser is believed
Number being converted to electric signal is transmitted to single-chip microcontroller, while temperature signal is converted to electric signal and is transmitted to single-chip microcontroller by temperature-compensating part, single
Piece machine carries out calculating output control command according to the signal received, when solving survey calculation data in practical applications, easily
It receives the interference in temperature and magnetic field etc. in environment and causes error larger, control the problem of inaccuracy.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
Such as Fig. 1, in automobile distance detection, a kind of laser is close to be switched, including laser aid: laser emitter, laser
Receiver and laser head, laser emitter are connected with laser head, then are connected with single-chip microcontroller, and laser pickoff is connected with single-chip microcontroller,
Laser emitter generates laser under the control of single-chip microcontroller, is launched by laser head, and reflected laser is connect by laser
It receives device and is received and converted to electric signal transmission to single-chip microcontroller, two data of laser distance measuring and speed.Including temperature compensation division
Point: temperature measuring circuit and differential temperature survey circuit are connected with single-chip microcontroller, and the temperature signal of measurement is amplified except the processing made an uproar
After be transferred to single-chip microcontroller and perform corresponding processing, single-chip microcontroller combination laser signal and temperature signal carry out data calculating, further according to
Calculated result exports control command, the movement of control switch, and switch connects the movement of control load with load again.
By the standard value of single-chip microcontroller set distance and speed, when distance, which reaches standard value speed, is not up to standard value,
The movement of single-chip microcontroller control switch；When distance be not up to standard value speed reach standard value when, single-chip microcontroller according to specific value into
Row calculates the movement of control switch；When speed and distance reach standard value, single-chip microcontroller carries out calculating control according to specific value
The movement of switch.
Meanwhile indicator light can be indicated according to the state of switch in switch motion.Wherein, select triode as opening
It closes, residual voltage etc. is avoided to pay no attention to the interference of factor, rechargeable battery is that laser is powered close to switch modules.
Such as Fig. 2, the temperature measuring circuit includes temperature sensor D2, resistance R2, R3, R4, R5, R6, R7, R12, R13,
R14, capacitor C2, C3, C4, C6, C7, C9, C12, C13, C16, electrolytic capacitor C17, operational amplifier U1, U2, U5, circuit group
Become: D2 anode meets VCC1, and D2 cathode connects one end of R2, and the other end of R2 connects one end of C2 respectively and meets the port IN- of U1, C2
The port being connected with R2 connects the port IN- of U1, the other end ground connection of C2 simultaneously, and C3 mono- terminates D2 cathode, C3 other end ground connection, C4
The common end of one termination C3 and R2, the common end of another termination C2 and R2 of C4, the port IN+ of a termination U1 of R3, R3's is another
End ground connection, one end of the zeroing termination C6 of power supply the termination VCC2, U1 of ground connection the termination VCC1, U1 of U1, the other end ground connection of C6,
R4 mono- terminates the port IN- of U1, and the OUT terminal mouth of another termination U1 of R4, C9 is in parallel with R4, and the OUT terminal mouth of U1 meets one end of R5, R5
Another termination U2 the port IN-, the port IN+ of U2 connects one end of R6, and the other end ground connection of R6, the ground connection of U2 terminates VCC1,
The power supply of U2 terminates VCC2, and R7 mono- terminates the port IN- of U2, and the OUT terminal mouth of another termination U2 of R7, C7 is in parallel with R7, the OUT of U2
Port exports amplified signal to filter circuit, and the one end R12 connects with the OUT terminal mouth of U2, and the other end is connected with R13, and R13's is another
End connection U5 the port IN+, C12 one end connection R12 and R13 common end, the other end be separately connected U5 OUT terminal mouth and
The port IN-, the one end C13 connect the port IN+ of U5, other end ground connection, and the power supply of U5 terminates VCC2, ground terminal ground connection, resistance R14
One end connects the OUT terminal mouth of U5, other end ground connection, and the OUT terminal mouth of U5 exports amplified signal to monolithic, and the place VCC1, which is equipped with, to be bypassed
Capacitance circuit, electrolytic capacitor C17 is in parallel with capacitor C16, and electrolytic capacitor C17 cathode ground connection, anode meets VCC1, and wherein D2 is surveyed
Measure the temperature of external environment.Wherein, temperature sensor D2 measures temperature signal and is converted to electric signal, by amplifying circuit and filter
Wave circuit obtains the temperature amplified signal for filtering out high-frequency noise, then exports and carry out data processing to single-chip microcontroller.
The differential temperature survey circuit includes temperature sensor D1, D2, resistance R0, R1, R2, R8, R9, R10, R11, R15,
R16, R17, capacitor C1, C2, C3, C4, C5, C10, C14, C15, C18, electrolytic capacitor C19, operational amplifier U3, U4, U6,
Circuit composition are as follows: D2 anode meets VCC1, and cathode connects one end of R2, the end IN+ of another termination U3 of another termination R0 of R2, R0
Mouthful, the one end C1 is grounded another termination R1, the port IN+ of another termination U3 of R1, and C5 mono- terminates the common end of Cl and R1, and C5 is another
The common end of termination C2 and R2, the common end of R12 mono- end Jie Cl and R1, another port IN- for terminating at U3, D1 cathode connect
VCC2, anode meet R12, and the ground connection of U3 terminates VCC1, and the power supply of U3 terminates VCC2, and the zeroing of U3 terminates one end of C10, C10's
Other end ground connection, R11 mono- terminate the port IN- of U3, the OUT terminal mouth of another termination U3 of R11, and the OUT terminal mouth of U3 connects one end of R9,
The port IN- of another termination U4 of R9, the port IN+ of U4 connect one end of R8, the other end ground connection of R8, the ground connection termination of U4
The power supply of VCC1, U4 terminate VCC2, and R10 mono- terminates the port IN- of U4, the OUT terminal mouth of another termination U4 of R10, the OUT terminal mouth of U2
Amplified signal is exported to filter circuit, the one end R15 connects with the OUT terminal mouth of U6, and the other end is connected with R16, and the other end of R16 connects
The port IN+ of U6, the common end of one end connection R15 and R16 of C14 are connect, the other end is separately connected OUT terminal mouth and the end IN- of U6
Mouthful, the one end C15 connects the port IN+ of U6, other end ground connection, and the power supply of U6 terminates VCC2, ground terminal ground connection, the one end resistance R17
The OUT terminal mouth of U6, other end ground connection are connected, the OUT terminal mouth of U6 exports amplified signal to single-chip microcontroller, and it is electric that the place VCC2 is equipped with bypass
Hold condenser network, electrolytic capacitor C19 is in parallel with capacitor C18, and electrolytic capacitor C19 cathode ground connection, anode meets VCC2, and wherein D1 is measured
Temperature at laser pickoff.Wherein, temperature sensor D1, D2 measures two temperature signals, by amplifying circuit and filtered electrical
Road obtains the temperature difference amplified signal for filtering out high-frequency noise, then is output to single-chip microcontroller and carries out data processing.
Wherein, D1, D2 select AD590, and U1, U2, U3, U4, U5, U6 select OP07, the specific type selecting of all devices and numerical value
It can self-setting in specifically used environment according to professional general knowledge.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of close switch of laser, it is characterised in that: including a shell, include: in shell
Laser aid: for generating Laser emission and receiving laser, measurement is at a distance from target and target velocity, by laser signal
It is defeated by single-chip microcontroller；
Temperature-compensation circuit: measurement temperature deviation is converted to electric signal, is defeated by single-chip microcontroller；
Single-chip microcontroller: carrying out relevant calculation in conjunction with laser signal and temperature signal, then exports control command control laser aid and open
The execution of pass.
2. a kind of close switch of laser according to claim 1, it is characterised in that: further include in the intracorporal rechargeable battery of shell
With the action indicator outside shell, action indicator is accordingly indicated by single-chip microcontroller control according to the movement close to switch.
3. a kind of laser according to claim 1 close to switch, it is characterised in that: the laser aid include laser head,
Laser pickoff and the laser emitter being connected with laser head, laser emitter are connected with laser head and single-chip microcontroller, and laser connects
It receives device to be connected with single-chip microcontroller, laser pickoff reception is launched back reflection by laser head and returned by what laser emitter generated
Laser, and the laser received is converted into electric signal and is defeated by single-chip microcontroller.
4. a kind of close switch of laser according to claim 1, it is characterised in that: the temperature-compensation circuit includes being used for
Measurement temperature and output temperature signal temperature measuring circuit and for measure the temperature difference and export temperature signal differential temperature survey electricity
Road.
5. a kind of close switch of laser according to claim 4, it is characterised in that: the temperature measuring circuit includes one
A temperature sensor, signal amplification circuit, filter circuit and shunt capacitance circuit, the differential temperature survey circuit include two temperature
Sensor, signal amplification circuit, filter circuit and shunt capacitance circuit, temperature sensor temperature collection signal are amplified by signal
Circuit amplification is defeated by processing and calculating that single-chip microcontroller carries out data after filtering out invalid high-frequency noise using filter circuit.
6. a kind of close switch of laser according to claim 5, it is characterised in that: the temperature measuring circuit includes temperature
Sensor D2, resistance R2, R3, R4, R5, R6, R7, R12, R13, R14, capacitor C2, C3, C4, C6, C7, C9, C12, C13, C16,
Electrolytic capacitor C17, operational amplifier U1, U2, U5, circuit composition are as follows: D2 anode meets VCC1, and D2 cathode meets one end of R2, R2
The other end connect one end of C2 and connect the port IN- of U1 respectively, the port that C2 is connected with R2 connects the port IN- of U1 simultaneously, C2's
The other end ground connection, C3 mono- terminate D2 cathode, the C3 other end ground connection, C4 mono- terminate C3 and R2 common end, another termination C2 of C4 with
The common end of R2, the port IN+ of a termination U1 of R3, the other end ground connection of R3, the ground connection of U1 terminate VCC1, the power supply termination of U1
One end of the zeroing termination C6 of VCC2, U1, the other end ground connection of C6, R4 mono- terminate the port IN- of U1, another termination U1's of R4
OUT terminal mouth, C9 is in parallel with R4, and the OUT terminal mouth of U1 connects one end of R5, the port IN- of another termination U2 of R5, the port IN+ of U2
One end of R6, the other end ground connection of R6 are connect, the ground connection of U2 terminates VCC1, and the power supply of U2 terminates VCC2, and R7 mono- terminates the end IN- of U2
Mouthful, the OUT terminal mouth of another termination U2 of R7, C7 is in parallel with R7, and the OUT terminal mouth of U2 exports amplified signal to filter circuit, the one end R12
Connect with the OUT terminal mouth of U2, the other end is connected with R13, and the port IN+ of the other end connection U5 of R13, one end of C12 connects R12
With the common end of R13, the other end is separately connected OUT terminal mouth and the port IN- of U5, and the one end C13 connects the port IN+ of U5, another
End ground connection, the power supply of U5 terminate VCC2, and ground terminal is grounded, the OUT terminal mouth of the one end resistance R14 connection U5, other end ground connection, U5's
OUT terminal mouth exports amplified signal to monolithic, shunt capacitance condenser network is equipped at VCC1, electrolytic capacitor C17 and capacitor C16 are simultaneously
Connection, electrolytic capacitor C17 cathode ground connection, anode meet VCC1, and wherein D2 measures the temperature of external environment.
7. a kind of close switch of laser according to claim 5, it is characterised in that: the differential temperature survey circuit includes temperature
Sensor D1, D2, resistance RO, R1, R2, R8, R9, R10, R11, R15, R16, R17. capacitor C1, C2, C3, C4, C5, C10,
C14, C15, C18, electrolytic capacitor C19, operational amplifier U3, U4, U6, circuit composition are as follows: D2 anode meets VCC1, and cathode meets R2
One end, the port IN+ of another termination U3 of another termination R0 of R2, R0, the one end C1 is grounded another termination R1, the other end of R1
Connect the port IN+ of U3, C5 mono- terminates the common end of C1 and R1, the common end of another termination C2 and R2 of C5, mono- end Jie C1 of R12 with
The common end of R1, another port IN- for terminating at U3, D1 cathode meet VCC2, and anode meets R12, and the ground connection of U3 terminates VCC1, U3's
Power supply terminates VCC2, one end of the zeroing termination C10 of U3, and the other end of C10 is grounded, and R11 mono- terminates the port IN- of U3, and R11 is another
The OUT terminal mouth of one termination U3, the OUT terminal mouth of U3 connect one end of R9, and the port IN- of another termination U4 of R9, the port IN+ of U4 connects
One end of R8, the other end ground connection of R8, the ground connection of U4 terminate VCC1, and the power supply of U4 terminates VCC2, and R10 mono- terminates the end IN- of U4
Mouthful, the OUT terminal mouth of another termination U4 of R10, the OUT terminal mouth of U2 exports amplified signal to filter circuit, the OUT of the one end R15 and U6
Port connects, and the other end is connected with R16, the port IN+ of the other end connection U6 of R16, the public affairs of one end connection R15 and R16 of C14
End altogether, the other end are separately connected OUT terminal mouth and the port IN- of U6, and the one end C15 connects the port IN+ of U6, other end ground connection, U6
Power supply terminate VCC2, ground terminal ground connection, the one end resistance R17 connects the OUT terminal mouth of U6, and other end ground connection, the OUT terminal mouth of U6 will
Amplified signal is exported to single-chip microcontroller, and shunt capacitance condenser network is equipped at VCC2, and electrolytic capacitor C19 is in parallel with capacitor C18, is electrolysed
Capacitor C19 cathode ground connection, anode meet VCC2, and wherein D1 measures the temperature at laser pickoff.
8. a kind of laser according to claim 1 close to switch, it is characterised in that: the single-chip microcontroller by wireless telecommunications with
Host computer is attached.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811127611.7A CN109302168A (en) | 2018-09-26 | 2018-09-26 | A kind of close switch of laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811127611.7A CN109302168A (en) | 2018-09-26 | 2018-09-26 | A kind of close switch of laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822908A (en) * | 2019-10-09 | 2020-02-21 | 上海晟申重机装备有限公司 | Automatic greasing device for sintering trolley and control method thereof |
-
2018
- 2018-09-26 CN CN201811127611.7A patent/CN109302168A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822908A (en) * | 2019-10-09 | 2020-02-21 | 上海晟申重机装备有限公司 | Automatic greasing device for sintering trolley and control method thereof |
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