CN106711940A - Protection circuit used for low-light level night vision device - Google Patents
Protection circuit used for low-light level night vision device Download PDFInfo
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- CN106711940A CN106711940A CN201611166124.2A CN201611166124A CN106711940A CN 106711940 A CN106711940 A CN 106711940A CN 201611166124 A CN201611166124 A CN 201611166124A CN 106711940 A CN106711940 A CN 106711940A
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- power circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
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- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
A protection circuit used for a low-light level night vision device comprises a power supply circuit outputting a voltage value, an image intensifier highlight prevention protection circuit body and a cell low-voltage protection circuit body, wherein the image intensifier highlight prevention protection circuit body is connected to the power supply circuit and is used for preventing from carrying out work under a highlight environment; and the cell low-voltage protection circuit body is connected to the power supply circuit and is used for preventing from carrying out work in a low voltage value. Through the power supply circuit, a stable and sustainable voltage is provided; through the image intensifier highlight prevention protection circuit body, a work condition of an image intensifier Z is guaranteed; and through the cell low-voltage protection circuit body, a condition of working under a low voltage condition is prevented so that a protection effect to the intensifier and a cell is realized.
Description
First, technical field
The present invention relates to a kind of protection circuit, especially a kind of protection circuit for low-light level night vision device.
2nd, background technology
Low-light level night vision device is the instrument worked under night or faint photoenvironment, and its basic functional principle is：Night scenery mesh
Mark radiation or reflection light, be imaged on the cathode plane of image intensifier by object lens, by opto-electronic conversion, electronics accelerate or again
Increase, obtained on the face of image intensifier by enhanced scenery target picture.As the picture of low-light level night vision device core devices
The operation principle of booster is：Front end face is the photosensitive material for having high response to light, and photoelectricity is carried out when being irradiated by light
Conversion, produces electronics, and centre is high voltage electric field, and electronics is accelerated under high voltage electric field effect, forms enhanced target electricity
Signal, rear end face is fluorescent material, and the electron bombardment after acceleration produces visible ray, by target electric signal also on fluorescent material
The former photosensitive material that it is critical only that cathode plane changed into target optical signal, its optical-electrical-optical, present image intensifier, photosensitive material
Sensitivity it is high, image intensifier is had high sensitivity, can under the faint light without moon starlight condition normal work
Make, if its sensitivity can be reduced quickly when image intensifier photosensitive material undergoes strong illumination for a long time under high light, image intensifier
Its amplification to faint light is just lost, Infravision is lost, therefore image intensifier can not for a long time undergo strong illumination,
Lll night vision equipment and power supply used by equipment are small volume, lightweight, recycling, change the convenient electricity that charges simultaneously
Pond, if but the shortcoming of rechargeable battery is overdischarge in use, the service life and security performance of battery will be reduced, therefore use
It is a kind of important electronic unit in the protection circuit of low-light level night vision device, currently there are no a kind of protection for low-light level night vision device
Circuit, so as to be protected to image intensifier and battery.
Based on existing technical problem, technical characteristic and technique effect, application technical scheme of the invention is made.
3rd, the content of the invention
Object of the invention is a kind of protection circuit for low-light level night vision device.
In order to overcome above-mentioned technical disadvantages, it is an object of the invention to provide a kind of protection circuit for low-light level night vision device,
It is achieved that the protective effect to booster and battery.
To reach above-mentioned purpose, the present invention is adopted the technical scheme that：Include the power circuit of output voltage values, set
Be be connected with power circuit and for prevent from being operated in strong light environment image intensifier anti glare anti static coatingses protection circuit body,
It is set to be connected with power circuit and the battery low-voltage protection circuit body for preventing from being operated in low voltage value.
Due to devising power circuit, image intensifier anti glare anti static coatingses protection circuit body and battery low-voltage protection circuit sheet
Body, the voltage of holding property of stabilization is provided by power circuit, and image intensifying is ensured by image intensifier anti glare anti static coatingses protection circuit body
The condition of work of device Z, is ensured against by battery low-voltage protection circuit body and is worked under low voltage condition, it is achieved that
Protective effect to booster and battery.
The present invention is devised, according to the mode of the requirement for meeting intensity of illumination and operational voltage value power circuit, as increasing
Strong device anti glare anti static coatingses protection circuit body and battery low-voltage protection circuit body are connected with each other.
The present invention is devised, and image intensifier anti glare anti static coatingses protection circuit body is set to include with first interface F1 and
The power circuit and image intensifier anti glare anti static coatingses protection circuit body and image intensifier anti glare anti static coatingses protection circuit body of two interface F2
It is set to include photo resistance R5, resistance R6, metal-oxide-semiconductor M2, resistance R7, resistance R8, metal-oxide-semiconductor M3, image intensifier Z and resistance
The interface S of one end, one end of resistance R7 and metal-oxide-semiconductor M3 of R9, photo resistance R5 is respectively set to be connect with the second of power circuit
Mouth F2 is connected and the other end of resistance R6, the other end of the interface D of metal-oxide-semiconductor M2 and resistance R9 are respectively set to and power circuit
First interface F1 connection, the other end of photo resistance R5, one end of resistance R6 are set to mutually interconnect with the interface G of metal-oxide-semiconductor M2
Connect and the other end of resistance R7, one end of the interface S of metal-oxide-semiconductor M2 and resistance R8 are set to be connected with each other, resistance R8's is another
End is set to be connected with the interface G of metal-oxide-semiconductor M3 and the interface D of metal-oxide-semiconductor M3 is set to be connected with the positive pole of image intensifier Z, electricity
The one end for hindering R9 is set to be connected with the negative pole of image intensifier Z.
The present invention is devised, and battery low-voltage protection circuit body is set to include and is connect with first interface F1, second
Mouth F2, the power circuit and battery low-voltage protection circuit body of the 3rd interface F3 and the 4th interface F4, battery low-voltage protection
Circuit body is set to include resistance R10, resistance R11, electric capacity C5, electric capacity C6, timer S1, electric capacity C7, resistance R12, electricity
Resistance R13, resistance R14, triode Q1, triode Q2, resistance R15, resistance R16, electric capacity C8, resistance R17, light emitting diode D3 and
One end of voltage checking chip U1, resistance R10, the interface VCC of timer S1 and interface RST are set to first with power circuit
Interface F1 connections and one end, one end of electric capacity C6, the negative pole of the interface GMD of timer S1 and light emitting diode D3 of electric capacity C5
It is set to be connected with the second interface F2 of power circuit, the other end of resistance R10, one end of resistance R11 and timer S1's connects
Mouthful DIS is set to be connected with each other and the other end of resistance R11, the interface VDE of timer S1 and interface TRI and electric capacity C5 it is another
One end is set to be connected with each other, and the other end of electric capacity C6 is set to be connected with the interface COM of timer S1 and timer S1
One end of interface OUT, one end of resistance R12 and electric capacity C7 are set to be connected with each other, the other end of resistance R12, electric capacity C7 it is another
The 1b poles of one end, one end of resistance R13 and triode Q1 are set to be connected with each other and the 2c poles of triode Q1 are set to and hair
The positive pole connection of optical diode D3, one end of the 3e poles, the other end of resistance R13 and resistance R14 of triode Q1 is set to mutually
Connect and the other end of resistance R14 is set to be connected with the 2c poles of triode Q2, the 3e poles of triode Q2, the one of resistance R16
One end of end and electric capacity C8 are set to be connected with each other and the other end of electric capacity C8 is set to be connected to ground, and resistance R16's is another
The 1b poles of end, one end of resistance R15 and triode Q2 are set to be connected with each other and the other end of resistance R15, the one of resistance R17
The interface 2 of end and voltage checking chip U1 is set to be connected with each other, and the other end of resistance R17 is set to the with power circuit the 4th
Interface F4 is connected and the interface 1 of voltage checking chip U1 is set to be connected with the 3rd interface F3 of power circuit, voltage detecting
The interface 3 of chip U1 is set to be connected to ground.
The present invention is devised, power circuit be set to include battery T, switch K, inductance L1, diode D1, metal-oxide-semiconductor M1,
Computing chip B1, computing chip B2, electric capacity C1, electric capacity C2, resistance R1, resistance R2, resistance R3, electric capacity C3, electric capacity C4, resistance R4
With light emitting diode D2,
The positive pole of battery T is set to be connected and switch the other end of K with one end of switch K, one end of inductance L1, electric capacity C1
The interface 1 of one end and computing chip B2 is set to be connected with each other, and the other end of electric capacity C1 is set to be connected to ground and inductance L1
The other end, the positive pole of diode D1, the interface 4 of the interface D of metal-oxide-semiconductor M1 and computing chip B1 be set to be connected with each other, electric capacity
The interface 3 of the other end of C1, the interface S of metal-oxide-semiconductor M1 and computing chip B1 is set to the interface S of interconnection and metal-oxide-semiconductor M1
It is set to be connected with the interface 2 of computing chip B1, the interface 3 of computing chip B1 is set to be connected to ground and computing chip B1
Interface 1 and interface 6, the interface 2 of computing chip B1, one end of resistance R1, one end of electric capacity C2, one end of resistance R2 and resistance R3
One end be set to be connected with each other, the interface 5 of computing chip B1, the other end of electric capacity C2, the other end of resistance R1, resistance R2
One end of the other end, the negative pole of diode D1, one end of electric capacity C3, one end of electric capacity C4 and resistance R4 are set to be connected with each other simultaneously
And the negative pole of the other end of resistance R3, the other end of electric capacity C3, the other end of electric capacity C4 and light emitting diode D2 is set to mutually
Connection, the other end of resistance R4 is set to be connected with the positive pole of light emitting diode D2, and one end of resistance R4 is set to power circuit
First interface F1 and the negative pole of light emitting diode D2 is set to the second interface F2 of power circuit, one end of inductance L1 is set
The 4th interface F4 of power circuit is set to for the negative pole of the 3rd interface F3 and diode D1 of power circuit.
The technical effects of the invention are that：High light protection circuit uses optical sensor photo-resistor, resistance, metal-oxide-semiconductor shape
Into bleeder circuit, amplified, shaping, output switching signal control image intensifier work realizes Multiple Type image intensifier strong
Light is protected under, and battery low-voltage warning circuit is carried out using 7555 timers, voltage checking chip to cell voltage
Constantly monitor, realize that battery can be monitored lll night vision equipment in use with equipment, reasonably filled
Electricity is safeguarded, from photo-resistor as photo-sensing device, regulating resistor as illumination control partial pressure adjusting means, low-power consumption
Metal-oxide-semiconductor as control image intensifier operating switch signal control device, this ensure that lll night vision equipment in core
If part image intensifier perceives the faint illumination condition image intensifier of ambient light illumination then normal work by photo-sensing device, if by force
Light illumination condition image intensifier is then closed, from 7555 timers with monostable trigger function as alarm lamp control,
Monitored as cell voltage and alarm lamp starter with the voltage checking chip that low-power consumption, precise voltage compare, so protected
Demonstrate,prove lll night vision equipment and equipment in use, found that battery electric quantity is not enough in time, changed battery, do not influence dress
It is standby continuously to be used at night, and ensure that used rechargeable battery can be charged in time, increased the use of battery
Life-span.
In the technical program, power circuit, the image intensifier for meeting the requirement of intensity of illumination and operational voltage value are anti-strong
Light protection circuit body and battery low-voltage protection circuit body are important technical characteristic, in the protection electricity for low-light level night vision device
In the technical field on road, with novelty, creative and practicality, the term in the technical program all can be to use this technology
Patent document in field is explained and understood.
4th, illustrate
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing skill
The accompanying drawing to be used needed for art description is briefly described, it should be apparent that, drawings in the following description are only the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the schematic diagram of image intensifier anti glare anti static coatingses protection circuit of the invention：
Fig. 2 is the schematic diagram of battery low-voltage protection circuit of the invention.
5th, specific embodiment
According to guidelines for examination, to it is used in the present invention such as " have ", "comprising" and " including " term should be understood to not
Allot the presence or addition of one or more of the other element or its combination.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", D score, "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outward " are the orientation or position relationship of general expression, are for only for ease of
The description present invention is described with simplified, must have specific orientation, Yi Te rather than the device or element for indicating or imply meaning
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.Additionally, term " first ", " second ", " the 3rd "
It is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
As long as additionally, technical characteristic involved in invention described below different embodiments non-structure each other
Can just be combined with each other into conflict.
In below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made,
Belong to the scope of protection of the invention.
Fig. 1 is one embodiment of the present of invention, and the present embodiment is illustrated with reference to accompanying drawing, includes image intensifier anti glare anti static coatingses
Protection circuit and battery low-voltage protection circuit,
Image intensifier anti glare anti static coatingses protection circuit is set to include the power circuit with first interface F1 and second interface F2, light
Quick resistance R5, resistance R6, metal-oxide-semiconductor M2, resistance R7, resistance R8, metal-oxide-semiconductor M3, image intensifier Z and resistance R9, photo resistance R5's
The interface S of one end, one end of resistance R7 and metal-oxide-semiconductor M3 is respectively set to be connected and resistance with the second interface F2 of power circuit
The other end of R6, the other end of the interface D of metal-oxide-semiconductor M2 and resistance R9 are respectively set to connect with the first interface F1 of power circuit
Connect, the interface G of the other end, one end of resistance R6 and metal-oxide-semiconductor M2 of photo resistance R5 is set to be connected with each other and resistance R7
The other end, one end of the interface S of metal-oxide-semiconductor M2 and resistance R8 are set to be connected with each other, and the other end of resistance R8 is set to and metal-oxide-semiconductor
The interface G of M3 is connected and the interface D of metal-oxide-semiconductor M3 is set to be connected with the positive pole of image intensifier Z, and one end of resistance R9 is set to
Negative pole with image intensifier Z is connected.
Battery low-voltage protection circuit be set to include with first interface F1, second interface F2, the 3rd interface F3 and
The power circuit of the 4th interface F4, resistance R10, resistance R11, electric capacity C5, electric capacity C6, timer S1, electric capacity C7, resistance R12, electricity
Resistance R13, resistance R14, triode Q1, triode Q2, resistance R15, resistance R16, electric capacity C8, resistance R17, light emitting diode D3 and
Voltage checking chip U1,
One end of resistance R10, the interface VCC of timer S1 and interface RST are set to be connected with the first interface F1 of power circuit
And one end of electric capacity C5, one end of electric capacity C6, the negative pole of the interface GMD of timer S1 and light emitting diode D3 are set to and electricity
The second interface F2 connections of source circuit, the interface DIS of the other end, one end of resistance R11 and timer S1 of resistance R10 is set to
It is connected with each other and the other end of the other end of resistance R11, the interface VDE of timer S1 and interface TRI and electric capacity C5 is set to
Be connected with each other, the other end of electric capacity C6 be set to be connected with the interface COM of timer S1 and timer S1 interface OUT, electricity
One end of one end and electric capacity C7 for hindering R12 is set to be connected with each other, the other end of resistance R12, the other end of electric capacity C7, resistance
One end of R13 and the 1b poles of triode Q1 are set to be connected with each other and the 2c poles of triode Q1 are set to and light emitting diode D3
Positive pole connection, one end of the 3e poles, the other end of resistance R13 and resistance R14 of triode Q1 is set to be connected with each other and electricity
The other end for hindering R14 is set to be connected with the 2c poles of triode Q2, the 3e poles of triode Q2, one end of resistance R16 and electric capacity C8
One end be set to be connected with each other and the other end of electric capacity C8 is set to be connected to ground, the other end of resistance R16, resistance R15
One end and the 1b poles of triode Q2 be set to be connected with each other and the inspection of the other end of resistance R15, one end of resistance R17 and voltage
The interface 2 for surveying chip U1 is set to be connected with each other, and the other end of resistance R17 is set to be connected with the 4th interface F4 of power circuit
And the interface 1 of voltage checking chip U1 is set to be connected with the 3rd interface F3 of power circuit, and voltage checking chip U1's connects
Mouth 3 is set to be connected to ground.
In the present embodiment, power circuit be set to include battery T, switch K, inductance L1, diode D1, metal-oxide-semiconductor M1,
Computing chip B1, computing chip B2, electric capacity C1, electric capacity C2, resistance R1, resistance R2, resistance R3, electric capacity C3, electric capacity C4, resistance R4
With light emitting diode D2,
The positive pole of battery T is set to be connected and switch the other end of K with one end of switch K, one end of inductance L1, electric capacity C1
The interface 1 of one end and computing chip B2 is set to be connected with each other, and the other end of electric capacity C1 is set to be connected to ground and inductance L1
The other end, the positive pole of diode D1, the interface 4 of the interface D of metal-oxide-semiconductor M1 and computing chip B1 be set to be connected with each other, electric capacity
The interface 3 of the other end of C1, the interface S of metal-oxide-semiconductor M1 and computing chip B1 is set to the interface S of interconnection and metal-oxide-semiconductor M1
It is set to be connected with the interface 2 of computing chip B1, the interface 3 of computing chip B1 is set to be connected to ground and computing chip B1
Interface 1 and interface 6, the interface 2 of computing chip B1, one end of resistance R1, one end of electric capacity C2, one end of resistance R2 and resistance R3
One end be set to be connected with each other, the interface 5 of computing chip B1, the other end of electric capacity C2, the other end of resistance R1, resistance R2
One end of the other end, the negative pole of diode D1, one end of electric capacity C3, one end of electric capacity C4 and resistance R4 are set to be connected with each other simultaneously
And the negative pole of the other end of resistance R3, the other end of electric capacity C3, the other end of electric capacity C4 and light emitting diode D2 is set to mutually
Connection, the other end of resistance R4 is set to be connected with the positive pole of light emitting diode D2, and one end of resistance R4 is set to power circuit
First interface F1 and the negative pole of light emitting diode D2 is set to the second interface F2 of power circuit, one end of inductance L1 is set
The 4th interface F4 of power circuit is set to for the negative pole of the 3rd interface F3 and diode D1 of power circuit.
In the present embodiment, the model of metal-oxide-semiconductor M1, metal-oxide-semiconductor M2 and metal-oxide-semiconductor M3 is set to CMN2305 types MOS pipes.
In the present embodiment, the model of image intensifier Z is set to the 18/18A-ZQ model image intensifiers of GZ III.
In the present embodiment, the model of timer S1 is set to the type timers of ICM 7555.
In the present embodiment, the model of voltage checking chip U1 is set to PJ61N113MR type voltage checking chips.
Due to battery T, switch K, inductance L1, diode D1, metal-oxide-semiconductor M1, computing chip B1, computing chip B2, electric capacity C1,
The power circuit of electric capacity C2, resistance R1, resistance R2, resistance R3, electric capacity C3, electric capacity C4, resistance R4 and light emitting diode D2 composition
The voltage of stabilization is provided,
Optical sensor is that photo resistance R5 is connected on power circuit end using the pin of 3517 type photo-resistor 1 one, and another pin is connected on 50
One end of kilo-ohm resistance R6, constitutes divider, and voltage is by CMN2305 type metal-oxide-semiconductor M2, output voltage switching signal control after partial pressure
The 18/18A-ZQ model image intensifiers Z of GZ processed III work and close, this ensure that the core component picture in lll night vision equipment increases
If strong device perceives the faint illumination condition image intensifier of ambient light illumination then normal work by photo-sensing device, if high light illumination
Condition image intensifier is then closed.
The battery T of battery low-voltage detection is encapsulated using SOT23-3, the low effective open-drain pole way of output, low-power consumption, essence
True voltage ratio compared with PJ61N113MR type voltage checking chip U1, i.e. detection battery electricity when detecting battery voltage value less than 1.1V
Amount is not enough, and voltage checking chip U1 output voltage values are 0, by CMN2305 type metal-oxide-semiconductor M1, the control of output voltage switching signal
The i.e. not enough alarm of detection battery electric quantity of flashing type light emitting diode D2 work, alarm lamp flashing type light emitting diode D2 work is logical
Cross eyepiece and light is transferred to operating personnel, if alarm lamp flashes always can influence the observation of operating personnel, for above-mentioned feelings
Condition circuit is fixed by resistance and capacitance adjustment ICM 7555 using the type timer S1 of ICM 7555 with monostable trigger function
When the device S1 triggered times be 30 seconds, make alarm lamp every 30 seconds flash 5 times, this ensure that lll night vision equipment and equipment
In use, find that battery electric quantity is not enough, changes battery in time, not influenceing to be equipped in night continuously uses, and ensures
The rechargeable battery for being used can be charged in time, increased the service life of battery.
The present invention has lower feature：
1st, due to devising power circuit, image intensifier anti glare anti static coatingses protection circuit body and battery low-voltage protection circuit body,
The voltage of holding property of stabilization is provided by power circuit, image intensifier Z is ensured by image intensifier anti glare anti static coatingses protection circuit body
Condition of work, ensured against by battery low-voltage protection circuit body and worked under low voltage condition, it is achieved that right
The protective effect of booster and battery.
2nd, due to devising power circuit, improve the stability of magnitude of voltage.
3rd, due to devising image intensifier anti glare anti static coatingses protection circuit body, using the signal for receiving luminous intensity, to image intensifying
The protecting effect of device is more preferable.
4th, due to devising battery low-voltage protection circuit body, by the signal of pick-up voltage value, to output voltage values
Monitoring effect it is more preferable.
5th, due to devising technical characteristic of the invention, the effect of set in the independent of technical characteristic and each other,
Shown by experiment, property indices of the invention are at least 1.7 times of existing property indices, are had by assessing
There is good market value.
Also other power circuit, image intensifier anti glare anti static coatingses guarantors with the requirement for meeting intensity of illumination and operational voltage value
Protection circuit body and other technical characteristics of battery low-voltage protection circuit body connection are all one of embodiments of the invention, and
And each technical characteristic of embodiment described above can be combined arbitrarily, to meet Patent Law, patent regulation and examining
The requirement of guide is looked into, the no longer embodiment to all possible combination of each technical characteristic in above-described embodiment is all retouched
State.
Therefore in the protection circuit technical field for low-light level night vision device, every power supply electricity for including output voltage values
Road, it is set to be connected with power circuit and the image intensifier anti glare anti static coatingses for preventing from being operated in strong light environment protect electricity
Road body, it is set to be connected with power circuit and the battery low-voltage for preventing from being operated in low voltage value protects electricity
The technology contents of road body are all within the scope of the present invention.
Claims (5)
1. a kind of protection circuit for low-light level night vision device, it is characterized in that：Include the power circuit of output voltage values, be set to
Be connected with power circuit and for prevent from being operated in strong light environment image intensifier anti glare anti static coatingses protection circuit body, set
It is set to the battery low-voltage protection circuit body being connected with power circuit and for preventing from being operated in low voltage value.
2. the protection circuit for low-light level night vision device according to claim 1, it is characterized in that：According to meet intensity of illumination and
Power circuit, image intensifier anti glare anti static coatingses protection circuit body and battery low-voltage are protected electricity by the mode of the requirement of operational voltage value
Road body is connected with each other.
3. the protection circuit for low-light level night vision device according to claim 1, it is characterized in that：Image intensifier anti glare anti static coatingses are protected
Circuit body is set to include power circuit and image intensifier the anti glare anti static coatingses protection with first interface F1 and second interface F2
Circuit body and image intensifier anti glare anti static coatingses protection circuit body be set to include photo resistance R5, resistance R6, metal-oxide-semiconductor M2,
Resistance R7, resistance R8, metal-oxide-semiconductor M3, image intensifier Z and resistance R9, one end of photo resistance R5, one end of resistance R7 and metal-oxide-semiconductor
The interface S of M3 be respectively set to be connected with the second interface F2 of power circuit and resistance R6 the other end, the interface of metal-oxide-semiconductor M2
The other end of D and resistance R9 is respectively set to be connected with the first interface F1 of power circuit, the other end of photo resistance R5, resistance
One end of R6 and the interface G of metal-oxide-semiconductor M2 are set to be connected with each other and the other end of resistance R7, the interface S of metal-oxide-semiconductor M2 and resistance
One end of R8 is set to be connected with each other, and the other end of resistance R8 is set to be connected with the interface G of metal-oxide-semiconductor M3 and metal-oxide-semiconductor M3
Interface D is set to be connected with the positive pole of image intensifier Z, and one end of resistance R9 is set to be connected with the negative pole of image intensifier Z.
4. the protection circuit for low-light level night vision device according to claim 1, it is characterized in that：Battery low-voltage protection circuit
Body be set to include with first interface F1, second interface F2, the power circuit of the 3rd interface F3 and the 4th interface F4 and
Battery low-voltage protection circuit body, battery low-voltage protection circuit body is set to include resistance R10, resistance R11, electric capacity
C5, electric capacity C6, timer S1, electric capacity C7, resistance R12, resistance R13, resistance R14, triode Q1, triode Q2, resistance R15,
Resistance R16, electric capacity C8, resistance R17, light emitting diode D3 and voltage checking chip U1, one end of resistance R10, timer S1
Interface VCC and interface RST are set to be connected with the first interface F1 of power circuit and one end of electric capacity C5, the one of electric capacity C6
End, the negative pole of the interface GMD of timer S1 and light emitting diode D3 are set to be connected with the second interface F2 of power circuit, resistance
The interface DIS of the other end, one end of resistance R11 and timer S1 of R10 be set to be connected with each other and resistance R11 it is another
The other end at end, the interface VDE of timer S1 and interface TRI and electric capacity C5 is set to be connected with each other, and the other end of electric capacity C6 sets
Be set to be connected with the interface COM of timer S1 and the interface OUT, one end of resistance R12 and electric capacity C7 of timer S1 one end
It is set to be connected with each other, the 1b poles of the other end of resistance R12, the other end of electric capacity C7, one end of resistance R13 and triode Q1 set
The 2c poles for being set to interconnection and triode Q1 are set to be connected with the positive pole of light emitting diode D3, the 3e poles of triode Q1,
The other end of resistance R13 and one end of resistance R14 are set to be connected with each other and the other end of resistance R14 is set to and triode
The 2c poles connection of Q2, one end of the 3e poles, one end of resistance R16 and electric capacity C8 of triode Q2 is set to be connected with each other and electric capacity
The other end of C8 is set to be connected to ground, and the 1b poles of the other end, one end of resistance R15 and triode Q2 of resistance R16 are set to
The other end of interconnection and resistance R15, one end of resistance R17 are set to mutually interconnect with the interface 2 of voltage checking chip U1
Connect, the other end of resistance R17 is set to be connected with the 4th interface F4 of power circuit and the interface 1 of voltage checking chip U1 sets
It is set to and is connected with the 3rd interface F3 of power circuit, the interface 3 of voltage checking chip U1 is set to be connected to ground.
5. the protection circuit for low-light level night vision device according to claim 1, it is characterized in that：Power circuit is set to include
There are battery T, switch K, inductance L1, diode D1, metal-oxide-semiconductor M1, computing chip B1, computing chip B2, electric capacity C1, electric capacity C2, electricity
Resistance R1, resistance R2, resistance R3, electric capacity C3, electric capacity C4, resistance R4 and light emitting diode D2,
The positive pole of battery T is set to be connected and switch the other end of K with one end of switch K, one end of inductance L1, electric capacity C1
The interface 1 of one end and computing chip B2 is set to be connected with each other, and the other end of electric capacity C1 is set to be connected to ground and inductance L1
The other end, the positive pole of diode D1, the interface 4 of the interface D of metal-oxide-semiconductor M1 and computing chip B1 be set to be connected with each other, electric capacity
The interface 3 of the other end of C1, the interface S of metal-oxide-semiconductor M1 and computing chip B1 is set to the interface S of interconnection and metal-oxide-semiconductor M1
It is set to be connected with the interface 2 of computing chip B1, the interface 3 of computing chip B1 is set to be connected to ground and computing chip B1
Interface 1 and interface 6, the interface 2 of computing chip B1, one end of resistance R1, one end of electric capacity C2, one end of resistance R2 and resistance R3
One end be set to be connected with each other, the interface 5 of computing chip B1, the other end of electric capacity C2, the other end of resistance R1, resistance R2
One end of the other end, the negative pole of diode D1, one end of electric capacity C3, one end of electric capacity C4 and resistance R4 are set to be connected with each other simultaneously
And the negative pole of the other end of resistance R3, the other end of electric capacity C3, the other end of electric capacity C4 and light emitting diode D2 is set to mutually
Connection, the other end of resistance R4 is set to be connected with the positive pole of light emitting diode D2, and one end of resistance R4 is set to power circuit
First interface F1 and the negative pole of light emitting diode D2 is set to the second interface F2 of power circuit, one end of inductance L1 is set
The 4th interface F4 of power circuit is set to for the negative pole of the 3rd interface F3 and diode D1 of power circuit.
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| CN201611166124.2A CN106711940B (en) | 2016-12-16 | 2016-12-16 | Protection circuit for low-light level night vision device |
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| CN201611166124.2A CN106711940B (en) | 2016-12-16 | 2016-12-16 | Protection circuit for low-light level night vision device |
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| CN106711940B CN106711940B (en) | 2018-12-21 |
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| CN108759756A (en) * | 2018-04-04 | 2018-11-06 | 成都众宜天成科技有限公司 | Paint coating thickness based on Ni-MH battery test constantly accurately measures instrument |
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| CN113701558A (en) * | 2021-08-01 | 2021-11-26 | 山东北方光学电子有限公司 | Circuit arrangement for a photoelectric sight and method of use |
| CN116799748A (en) * | 2023-08-28 | 2023-09-22 | 山西创芯光电科技有限公司 | Automatic protection circuit for night vision full-color illuminance of image intensifier |
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| CN116799748B (en) * | 2023-08-28 | 2023-11-14 | 山西创芯光电科技有限公司 | Automatic protection circuit for night vision full-color illuminance of image intensifier |
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| CN106711940B (en) | 2018-12-21 |
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