CN209103121U - A kind of instrument sleep-awake circuit - Google Patents
A kind of instrument sleep-awake circuit Download PDFInfo
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- CN209103121U CN209103121U CN201821854009.9U CN201821854009U CN209103121U CN 209103121 U CN209103121 U CN 209103121U CN 201821854009 U CN201821854009 U CN 201821854009U CN 209103121 U CN209103121 U CN 209103121U
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- oxide
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- instrument
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Abstract
The utility model relates to a kind of instrument sleep-awake circuit, including metal-oxide-semiconductor, the source electrode of metal-oxide-semiconductor connects battery, and the gate connected in parallel of metal-oxide-semiconductor has igniting branch and single-chip microcontroller branch, and metal-oxide-semiconductor drain electrode is output end；Ignition signal collection branch is connected on igniting branch input, single-chip microprocessor MCU control output end connects single-chip microcontroller branch；Single-chip microprocessor MCU exports late release signal simultaneously.The utility model solves the problems, such as instrument low-power consumption, does not need instrument software and carries out special processing, so that it may accomplish that standby current reaches 0mA, instrument is enabled to actually enter sleep state, instrument power consumption is preferably minimized.
Description
Technical field
The utility model relates to automobile instrument device fields, especially related with a kind of instrument sleep-awake circuit.
Background technique
It is integrated with more and more functions on automobile instrument at present, after automobile flameout, air-conditioning system, the circuits such as radio are straight
Power-off is connect, and is to enter low power consumpting state after flame-out there are also many circuits, such as car body controller (BCM), instrument etc., is not
It is fully powered-off, therefore will appear the problem of there is also standby currents after automobile flameout, and standby current is maintained at 10mA or so.
It is also possible to the case where low-power consumption that software realization occurred not.
In view of the above-mentioned problems, the present inventor has done a series of design and test, a simple hardware circuit is developed,
The problem of can solve instrument low-power consumption, really allows standby current to reach 0mA, thus this case generates.
Utility model content
The purpose of the utility model is to provide a kind of instrument sleep-awake circuits, solve the problems, such as instrument low-power consumption, are not required to
Instrument software is wanted to carry out special processing, so that it may accomplish that standby current reaches 0mA, instrument is enabled to actually enter sleep state, instrument
Consumption of boasting of one's bit of contribution is preferably minimized.
To achieve the above object, the technical solution adopted in the utility model is as follows:
The source electrode of a kind of instrument sleep-awake circuit, including metal-oxide-semiconductor, metal-oxide-semiconductor connects battery, the gate connected in parallel of metal-oxide-semiconductor
There are igniting branch and single-chip microcontroller branch, metal-oxide-semiconductor drain electrode is output end；Ignition signal collection branch is connected on igniting branch input
Road, single-chip microprocessor MCU control output end connect single-chip microcontroller branch；Single-chip microprocessor MCU exports late release signal simultaneously.
Resistance R91 is connected between the metal-oxide-semiconductor source electrode and grid.
The late release signal includes gauge pointer, LCD backlight, instrument backlight, meter lamp, buzzer.
The igniting branch includes that the base stage of point triode Q1, triode Q1 are defeated by resistance R93 connection ignition signal
Enter, the grid of the collector connection metal-oxide-semiconductor of triode Q1, the emitter ground connection of triode Q1 connects between base stage and emitter
Resistance R94.
The single-chip microcontroller branch includes triode Q2, and the base stage of triode Q2 passes through resistance R95 connection single-chip microprocessor MCU control
Output end processed, the grid of the collector connection metal-oxide-semiconductor of triode Q2, the transmitter ground connection of triode Q2, base stage and emitter it
Between connect resistance R96.
After the collector of the triode Q1 and triode Q2 is in parallel, the grid of metal-oxide-semiconductor is connected to by resistance R92.
The ignition signal collection branch includes from the concatenated diode D1 of igniting branch input, resistance R1, resistance
R2 connects divider resistance R3 and is grounded between resistance R1 and resistance R2, the output end of ignition signal collection branch connects filtered electrical
Hold C1 and is grounded.
Protection circuit is connected between the battery and ground terminal.
The protection circuit is zener diode D3 parallel with one another, filter capacitor C113, filter capacitor C114.
Anti-reverse diode D2 is connected between the battery and metal-oxide-semiconductor.
After adopting the above scheme, the utility model is formd ignition signal and single-chip microcomputer signal or logic by metal-oxide-semiconductor.
When ignition signal input, triode Q1 conducting, triode Q1 is exported as high level to metal-oxide-semiconductor, so that last metal-oxide-semiconductor output is
12V is instrument power supply, while making single-chip microprocessor MCU 5V power supply normal, and the starting of single-chip microcontroller branch, single-chip microcontroller control output end is
High level, triode Q2 conducting, triode Q2 export as high level to metal-oxide-semiconductor, at this time regardless of ignition signal whether there is, not
Influencing metal-oxide-semiconductor output is 12V, this is normal ignition wake-up states.
After flame-out, ignition signal disappears, and single-chip microcontroller control output end at this time is still high level, does not influence metal-oxide-semiconductor
Output is that 12V powers.Igniting branch detects that ignition signal is 0 at this time, then starts to do the standard for closing igniting by single-chip microprocessor MCU
It is standby, by gauge pointer, LCD backlight, instrument backlight, meter lamp, buzzer, after the completion of waiting closings to execute, single-chip microprocessor MCU
It is low level that processing, which enables control output end, the output of such single-chip microcontroller branch be also it is low, metal-oxide-semiconductor can not be opened at this time, metal-oxide-semiconductor output
For 0V, instrument power supply is thoroughly cut off, and may be implemented real low-power consumption, and standby current is close to 0mA.
Detailed description of the invention
Fig. 1 is the connection circuit diagram of the igniting branch of the utility model preferred embodiment, single-chip microcontroller branch and metal-oxide-semiconductor；
Fig. 2 is single-chip microprocessor MCU circuit diagram in the utility model preferred embodiment.
Specific embodiment
Referring to Figure of description, the utility model preferred embodiment is further elaborated.
A kind of instrument sleep-awake circuit, the single-chip microprocessor MCU being mainly concerned with and metal-oxide-semiconductor.The source S of metal-oxide-semiconductor, which connects, to be stored
Battery, battery voltage BAT_KT30 introduce power supply.There are two branches for the grid G parallel connection of metal-oxide-semiconductor, are igniting 1 He of branch respectively
Single-chip microcontroller branch 2, metal-oxide-semiconductor drain D are output end, provide supply voltage 12V for instrument.Metal-oxide-semiconductor source electrode is connected with grid paper
There is resistance R91.
Igniting branch 1 in the present embodiment includes triode Q1, and the base stage of triode Q1 is lighted a fire by resistance R93 connection
Signal input, the grid of the collector connection metal-oxide-semiconductor of triode Q1, the emitter ground connection of triode Q1, base stage and transmitter it
Between connect resistance R94.
Single-chip microcontroller branch 2 includes triode Q2, and the base stage of triode Q2 is controlled defeated by resistance R95 connection single-chip microprocessor MCU
Outlet, the grid of the collector connection metal-oxide-semiconductor of triode Q2, the transmitter ground connection of triode Q2 connect between base stage and transmitter
Connecting resistance R96.
Triode Q1 and triode Q2 is respectively adopted to realize conducting in igniting branch 1 and single-chip microcontroller branch 2.The current collection of the two
Extremely after parallel connection, the grid G of metal-oxide-semiconductor is connected to by resistance R92.
The ignition signal KEY_ON_KL15 to light a fire on branch 1 is input in single-chip microprocessor MCU by igniting acquisition branch 3
Detection processing.3 branch of ignition signal collection includes from the concatenated diode D1 of igniting branch input, resistance R1, resistance R2, electricity
Divider resistance R3 is connected between resistance R1 and resistance R2 and is grounded, and the output end connection filter capacitor C1 of ignition signal collection branch is simultaneously
Ground connection.
In single-chip microprocessor MCU, the acquisition signal of input terminal MCU_IN_KEY_ON connection igniting acquisition branch 3, single-chip microcontroller
The control output end MCU_OUT_12V connection single-chip microcontroller branch 2 of MCU, the control voltage as single-chip microcontroller branch 2.Monolithic simultaneously
Multipath delay shutdown signal is also connected on the output end of machine MCU, for example gauge pointer, LCD backlight, instrument backlight, instrument refer to
Show lamp, buzzer etc..
In order to enable circuit stability, is additionally provided with some protection circuits, for example, battery voltage BAT_KT30 and ground terminal
Between connect zener diode D3 parallel with one another, filter capacitor C113, filter capacitor C114, realize pressure stabilizing and filtering, electric power storage
Anti-reverse diode D2 is connected between cell voltage BAT_KT30 and metal-oxide-semiconductor.
Utility model works principle is as follows:
When ignition signal input, ignition signal KEY_ON_KL15 is height, and triode Q1 conducting, triode Q1, which is exported, is
High level, so that last metal-oxide-semiconductor output is 12V, is powered to metal-oxide-semiconductor for automobile instrument.Single-chip microprocessor MCU 5V power supply at this time is normal,
Single-chip microcontroller branch 2 starts.Single-chip microcontroller control output end MCU_OUT_12V is high level, triode Q2 conducting, triode Q2 output
It is high level to metal-oxide-semiconductor, at this time regardless of ignition signal whether there is, not affecting metal-oxide-semiconductor output is 12V, this is normal wakeup
State.
After flame-out, ignition signal KEY_ON_KL15 is low, and single-chip microprocessor MCU control output end MCU_OUT_ at this time
12V is still high level, and not influencing metal-oxide-semiconductor output is that 12V powers.Igniting branch 1 detects ignition signal KEY_ON_ after flame-out
KL15 is 0, then the signal is input to by the way that in single-chip microprocessor MCU, single-chip microprocessor MCU starts to do the preparation for closing igniting, passes through single-chip microcontroller
Gauge pointer, LCD backlight, instrument backlight, meter lamp, buzzer signal output are closed in output.Equal closings have executed
Cheng Hou drags down control output end MCU_OUT_12V level after single-chip microprocessor MCU processing, such output of single-chip microcontroller branch 2 be also it is low,
Metal-oxide-semiconductor is not lighted a fire 1 signal of branch at this time, and also without 2 signal of single-chip microcontroller branch, metal-oxide-semiconductor can not be opened, and metal-oxide-semiconductor output is 0V,
Instrument power supply is thoroughly cut off, and real low-power consumption may be implemented, standby current is close to 0mA, into sleep state.
It is the preferred embodiments of the present invention above, makes that several other are simple under the utility model concept thereof
Replacement and change, all shall be regarded as belonging to the protection category of the utility model.
Claims (10)
1. a kind of instrument sleep-awake circuit, it is characterised in that: including metal-oxide-semiconductor, the source electrode of metal-oxide-semiconductor connects battery, metal-oxide-semiconductor
Gate connected in parallel have igniting branch and single-chip microcontroller branch, metal-oxide-semiconductor drain electrode is output end；Igniting is connected on igniting branch input
Signal acquisition branch, single-chip microprocessor MCU control output end connect single-chip microcontroller branch；Single-chip microprocessor MCU exports late release signal simultaneously.
2. a kind of instrument sleep-awake circuit as described in claim 1, it is characterised in that: the metal-oxide-semiconductor source electrode and grid
Between be connected with resistance (R91).
3. a kind of instrument sleep-awake circuit as described in claim 1, it is characterised in that: the late release signal packet
Include gauge pointer, LCD backlight, instrument backlight, meter lamp, buzzer signal.
4. a kind of instrument sleep-awake circuit as described in claim 1, it is characterised in that: the igniting branch includes a little
The base stage of triode (Q1), triode (Q1) connects ignition signal input by resistance (R93), and the collector of triode (Q1) connects
The grid of metal-oxide-semiconductor is connect, the emitter ground connection of triode (Q1) connects resistance (R94) between base stage and transmitter.
5. a kind of instrument sleep-awake circuit as described in claim 1, it is characterised in that: the single-chip microcontroller branch includes
The base stage of triode (Q2), triode (Q2) connects single-chip microprocessor MCU control output end by resistance (R95), triode (Q2)
Collector connects the grid of metal-oxide-semiconductor, and the transmitter ground connection of triode (Q2) connects resistance (R96) between base stage and transmitter.
6. a kind of instrument sleep-awake circuit as described in claim 4 or 5, it is characterised in that: the triode (Q1) and
After the collector of triode (Q2) is in parallel, the grid of metal-oxide-semiconductor is connected to by resistance (R92).
7. a kind of instrument sleep-awake circuit as described in claim 1, it is characterised in that: the ignition signal collection branch
Road include from the igniting concatenated diode of branch input (D1), resistance (R1), resistance (R2), resistance (R1) and resistance (R2) it
Between connect and divider resistance (R3) and be grounded, output end connection filter capacitor (C1) of ignition signal collection branch is simultaneously grounded.
8. a kind of instrument sleep-awake circuit as described in claim 1, it is characterised in that: the battery and ground terminal
Between be connected with protection circuit.
9. a kind of instrument sleep-awake circuit as claimed in claim 8, it is characterised in that: the protection circuit is mutual
Zener diode (D3), the filter capacitor (C113), filter capacitor (C114) of parallel connection.
10. a kind of instrument sleep-awake circuit as claimed in claim 8, it is characterised in that: the battery and metal-oxide-semiconductor
Between be connected with anti-reverse diode (D2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821854009.9U CN209103121U (en) | 2018-11-12 | 2018-11-12 | A kind of instrument sleep-awake circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821854009.9U CN209103121U (en) | 2018-11-12 | 2018-11-12 | A kind of instrument sleep-awake circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209103121U true CN209103121U (en) | 2019-07-12 |
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ID=67159113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821854009.9U Expired - Fee Related CN209103121U (en) | 2018-11-12 | 2018-11-12 | A kind of instrument sleep-awake circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209103121U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780167A (en) * | 2020-06-08 | 2020-10-16 | 中山百得厨卫有限公司 | Ignition control method for kitchen range |
| CN111983953A (en) * | 2020-08-12 | 2020-11-24 | 广东电网有限责任公司广州供电局 | Device and method for collecting well lid state and reducing power consumption based on NB-iot dormancy process |
-
2018
- 2018-11-12 CN CN201821854009.9U patent/CN209103121U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780167A (en) * | 2020-06-08 | 2020-10-16 | 中山百得厨卫有限公司 | Ignition control method for kitchen range |
| CN111983953A (en) * | 2020-08-12 | 2020-11-24 | 广东电网有限责任公司广州供电局 | Device and method for collecting well lid state and reducing power consumption based on NB-iot dormancy process |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190712 Termination date: 20201112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |