CN106655108B - A kind of night vision device non-charging battery reverse connecting protection and low pressure warning circuit - Google Patents
A kind of night vision device non-charging battery reverse connecting protection and low pressure warning circuit Download PDFInfo
- Publication number
- CN106655108B CN106655108B CN201710119847.5A CN201710119847A CN106655108B CN 106655108 B CN106655108 B CN 106655108B CN 201710119847 A CN201710119847 A CN 201710119847A CN 106655108 B CN106655108 B CN 106655108B
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- Prior art keywords
- resistance
- night vision
- voltage
- reverse connecting
- battery
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Classifications
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/006—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too high or too low voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/044—Checking correct functioning of protective arrangements, e.g. by simulating a fault
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to night vision device non-charging battery reverse connecting protection and low pressure warning circuit, the alarm of night vision device low-voltage and battery reverse connecting protection for non-charging battery power supply.Adjust part by battery reverse connecting protection part, supply voltage to form with voltage sample part, have small in size, circuit components are few, it is low in energy consumption the advantages that.Using battery powered night vision device in brownout, low-voltage alarm is carried out by circuit, informs that user replaces the remaining working time of battery and product in time, avoids night vision device dead battery capability from causing to shut down, the strike being caught unprepared is brought to user.It can be used for non-charging battery reversal connection alarm and low-voltage alarm that individual soldier holds the equipment such as night-vision equipment, individual soldier's night vision sight device, pilot's night vision goggles.
Description
Technical field
The invention belongs to night vision technology fields, electronic circuit design field.
Background technique
Individual soldier's night-vision equipment and pilot's night vision goggles etc. mostly use non-charging battery to be powered in use.Night vision
For instrument using image intensifier as core, image intensifier electric system is relatively independent, can not carry out real-time display to the electricity of supplying cell,
Night vision device causes to shut down due to dead battery capability in use, and the strike being caught unprepared can be brought to user.For this purpose, design
Night vision device low-voltage warning circuit is alerted when exhausting also poor certain storing electricity apart from battery by circuit, is prompted
There are also batteries to exhaust by user.
In the prior art, some night vision instruments are alarmed without low-voltage, some night vision instruments have low-voltage alarm, Duo Shuotong
It crosses the processor chips such as single-chip microcontroller to detect voltage, circuit is complicated, increases the volume and power consumption of night vision instrument product.
Prior art disadvantage: circuit is complicated, component is more, volume is big, power consumption is big.
Summary of the invention
The technical problem to be solved by the present invention is to circuit of the present invention is simple, only pass through capacitor, resistance, MOSFET pipe, amplifier
It alarms etc. the low-voltage for being achieved that night vision product, small in size, circuit components are few, and it is low in energy consumption, while there is battery reversal connection to protect
Protective function.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
A kind of night vision device non-charging battery reverse connecting protection and low pressure warning circuit, including two low-light level tubes in parallel (E1,
E2), supplying cell G, which is characterized in that between supplying cell and the low-light level tube of parallel connection, the night vision device non-charging battery
Reverse connecting protection and low pressure warning circuit further include:
It is connect with the supplying cell G, the battery reverse connecting protection part for alarming when the reversal connection of night vision device battery
(01)。
It is connect respectively with battery reverse connecting protection part (01) and low-light level tube (E1, E2), alarm voltage is adjusted
Supply voltage adjust part (02).
It adjusts part with battery reverse connecting protection part (01) and supply voltage respectively to connect (02), Acquisition Circuit supply voltage
And the voltage sample part (03) being compared with alarm voltage.
The battery reverse connecting protection part (01) is that MOSFET manages (N2), MOSFET pipe (N2) drain electrode and power supply
Switch connection, MOSFET pipe (N2) source electrode adjust part (02) with supply voltage and connect, and the MOSFET manages (N2)
Grid is connect with ground terminal.
The voltage regulating part point (02), including 2 resistance (R7, R8), 2 capacitors (C2, C3) and the first transport and placing device
(N1) it forms, is connected in series between power supply and ground terminal after resistance (R7) is in parallel with capacitor (C3) with (R8), and as the first fortune
The input of device (N1) inverting input terminal (8) foot is put, non-inverting input terminal (4) foot of the first transport and placing device (N1) is connect with ground terminal, capacitor
(C2) it is connected between power supply and ground terminal.
The voltage sample part (03), including 6 resistance (R1, R2, R3, R4, R5, R6) and 1 capacitor (C1) and
Second transport and placing device (N3), input while and capacitor of the resistance (R1) as inverting input terminal (2) foot of the second transport and placing device (N3)
(C1) between series-connection power supplies and ground terminal, resistance (R2) is connected to the output end of the second transport and placing device (N3) after connecting with resistance (R1)
(6) foot, and LED alarm is connected after connecting with resistance (R6), resistance (R3) is connected to the second amplifier after connecting with resistance (R4)
Output end (6) foot of device (N3), and LED alarm is connected after connecting with resistance (R6), resistance (R5) is connected to the second transport and placing device
(N3) non-inverting input terminal (3) is between foot and ground terminal, and with resistance (R3), resistance (R4) series connection at be connected.
Further, between the supplying cell and battery reverse connecting protection part, it is serially connected with power switch.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 night vision device non-charging battery reverse connecting protection and low pressure warning circuit logic schematic diagram；
Fig. 2 night vision device non-charging battery reverse connecting protection and low pressure warning circuit embodiments structure chart；
Description of symbols: 01- battery reverse connecting protection part, 02- supply voltage adjust part, 03- voltage sample part.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Such as Fig. 1, illustrate the operation principle and process of night vision device non-charging battery reverse connecting protection and low pressure warning circuit:
It after night vision device booting, first checks for whether supplying cell is reversely connected, alarms if reversal connection.It is adjusted by supply voltage
The good alarm voltage value V1 of section sets, when normal battery operation, voltage sample part acquires voltage value V2, and compare V1,
V2 size, when sampled voltage is lower than alarm voltage, (V1 > V2) alarms.
It is as shown in Figure 2:
When normal work, battery is powered the low-light level tube (E1, E2) of lll night vision instrument by MOSFET pipe (N2).
Battery is not reversely connected state, and night vision device has been on state.MOSFET pipe (N2) source electrode and supply voltage adjustment portion
Divide (02) connection, described MOSFET pipe (N2) grid is connect with ground terminal.
Further, the voltage regulating part point (02), including 2 resistance (R7, R8), 2 capacitors (C2, C3) and the
One transport and placing device (N1) composition, is connected in series between power supply and ground terminal after resistance (R7) is in parallel with capacitor (C3) with (R8), and make
For the input of the first transport and placing device (N1) inverting input terminal (8) foot, non-inverting input terminal (4) foot and ground terminal of the first transport and placing device (N1) connect
It connects, capacitor (C2) is connected in series between power supply and ground terminal.
Further, the voltage sample part (03), including 6 resistance (R1, R2, R3, R4, R5, R6) and 1 electricity
Hold (C1) and the second transport and placing device (N3), resistance (R1) as inverting input terminal (2) foot of the second transport and placing device (N3) input simultaneously
With capacitor (C1) between series-connection power supplies and ground terminal, resistance (R2) is connected to the defeated of the second transport and placing device (N3) after connecting with resistance (R1)
Outlet (6) foot, and LED alarm is connected after connecting with resistance (R6), resistance (R3) is connected to second after connecting with resistance (R4)
Output end (6) foot of transport and placing device (N3), and LED alarm is connected after connecting with resistance (R6), resistance (R5) is connected to the second fortune
The non-inverting input terminal (3) of device (N3) is put between foot and ground terminal, and with resistance (R3), resistance (R4) series connection at be connected.
Alarm voltage is configured by the ratio of R7 and R8, and the 8 pin voltage V8 of transport and placing device N1 and 4 pin voltages carry out
Compare, pin 4 is the reference voltage V4 of chip interior, and as V8 > V4, it is low level that pin 1, which exports V1, subsequent LED alarm
Device does not work, without alarm.As V8 < V4, it is high level, subsequent LED alarm equipment alarm that pin 1, which exports V1,.
In the present embodiment, the reference voltage V4 of 4 chip interior of pin is 0.2V, is realized when charge capacity is lower than 0.2V Times
It is alert.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention
Invention, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, according to
It is so possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced
It changes.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention
Protection scope within.
Claims (2)
1. a kind of night vision device non-charging battery reverse connecting protection and low pressure warning circuit, including two low-light level tubes (E1, E2) in parallel,
Supplying cell G, which is characterized in that between supplying cell and the low-light level tube of parallel connection, the night vision device non-charging battery reversal connection
Protection and low pressure warning circuit further include:
It is connect with the supplying cell G, the battery reverse connecting protection part (01) for alarming when the reversal connection of night vision device battery；
It is connect respectively with battery reverse connecting protection part (01) and low-light level tube (E1, E2), the electricity that alarm voltage is adjusted
Source voltage regulating part point (02)；
Part is adjusted with battery reverse connecting protection part (01) and supply voltage respectively to connect (02), Acquisition Circuit supply voltage and with
The voltage sample part (03) that alarm voltage is compared；
Wherein, the battery reverse connecting protection part (01) is that MOSFET manages (N2), MOSFET pipe (N2) drain electrode and electricity
Source switch connection, MOSFET pipe (N2) source electrode adjust part (02) with supply voltage and connect, the MOSFET pipe
(N2) grid is connect with ground terminal；
The voltage regulating part point (02), including 2 resistance R7, R8,2 capacitors C2, C3 and the first transport and placing device (N1) group
At being connected in series between power supply and ground terminal after resistance R7 is in parallel with capacitor C3 with resistance R8, and as the first transport and placing device (N1)
The homophase input end feet (4) of the input of anti-phase input end feet (8), the first transport and placing device (N1) is connect with ground terminal, and capacitor C2 is connected to
Between power supply and ground terminal；
The voltage sample part (03), including 6 resistance R1, R2, R3, R4, R5, R6 and 1 capacitor C1 and the second amplifier
Device (N3), resistance R1 as the anti-phase input end feet (2) of the second transport and placing device (N3) input simultaneously with capacitor C1 series-connection power supplies with
Between ground terminal, resistance R2 is connected to the output end feet (6) of the second transport and placing device (N3) after connecting with resistance R1, and connects with resistance R6
Connect LED alarm afterwards, resistance R3 is connected to the output end feet (6) of the second transport and placing device (N3) after connecting with resistance R4, and with electricity
Hinder R6 series connection after connect LED alarm, resistance R5 be connected to the second transport and placing device (N3) homophase input end feet (3) and ground terminal it
Between, and with resistance R3, resistance R4 series connection at be connected.
2. night vision device non-charging battery reverse connecting protection according to claim 1 and low pressure warning circuit, it is characterized in that: in institute
Between the supplying cell stated and battery reverse connecting protection part, power switch is concatenated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710119847.5A CN106655108B (en) | 2017-03-01 | 2017-03-01 | A kind of night vision device non-charging battery reverse connecting protection and low pressure warning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710119847.5A CN106655108B (en) | 2017-03-01 | 2017-03-01 | A kind of night vision device non-charging battery reverse connecting protection and low pressure warning circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106655108A CN106655108A (en) | 2017-05-10 |
| CN106655108B true CN106655108B (en) | 2019-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710119847.5A Active CN106655108B (en) | 2017-03-01 | 2017-03-01 | A kind of night vision device non-charging battery reverse connecting protection and low pressure warning circuit |
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| CN (1) | CN106655108B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683266A (en) * | 2013-12-20 | 2014-03-26 | 青岛歌尔声学科技有限公司 | Rechargeable battery protection circuit |
| CN203732612U (en) * | 2014-02-25 | 2014-07-23 | 浙江海洋学院 | Under-voltage flicker indicating lamp |
| CN105119241A (en) * | 2015-08-21 | 2015-12-02 | 无锡拓能自动化科技有限公司 | Low-power cell electric quantity detection and protection circuit |
| CN105375589A (en) * | 2015-12-18 | 2016-03-02 | 江苏北方湖光光电有限公司 | Power supply circuit of low-light-level telescope |
| CN206564461U (en) * | 2017-03-01 | 2017-10-17 | 江苏北方湖光光电有限公司 | A kind of night vision device non-charging battery reverse connecting protection and low pressure warning circuit |
| EP3101759A4 (en) * | 2014-01-28 | 2018-01-17 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Detection circuit and method for charging start |
-
2017
- 2017-03-01 CN CN201710119847.5A patent/CN106655108B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683266A (en) * | 2013-12-20 | 2014-03-26 | 青岛歌尔声学科技有限公司 | Rechargeable battery protection circuit |
| EP3101759A4 (en) * | 2014-01-28 | 2018-01-17 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Detection circuit and method for charging start |
| CN203732612U (en) * | 2014-02-25 | 2014-07-23 | 浙江海洋学院 | Under-voltage flicker indicating lamp |
| CN105119241A (en) * | 2015-08-21 | 2015-12-02 | 无锡拓能自动化科技有限公司 | Low-power cell electric quantity detection and protection circuit |
| CN105375589A (en) * | 2015-12-18 | 2016-03-02 | 江苏北方湖光光电有限公司 | Power supply circuit of low-light-level telescope |
| CN206564461U (en) * | 2017-03-01 | 2017-10-17 | 江苏北方湖光光电有限公司 | A kind of night vision device non-charging battery reverse connecting protection and low pressure warning circuit |
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| Publication number | Publication date |
|---|---|
| CN106655108A (en) | 2017-05-10 |
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