CN103057419B - Input voltage automatic adjustment control device capable of being turned off of digitized automobile combination meter - Google Patents
Input voltage automatic adjustment control device capable of being turned off of digitized automobile combination meter Download PDFInfo
- Publication number
- CN103057419B CN103057419B CN201110318147.1A CN201110318147A CN103057419B CN 103057419 B CN103057419 B CN 103057419B CN 201110318147 A CN201110318147 A CN 201110318147A CN 103057419 B CN103057419 B CN 103057419B
- Authority
- CN
- China
- Prior art keywords
- voltage
- input voltage
- auto
- pwm
- adjusting circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000037452 priming Effects 0.000 claims description 26
- 238000005259 measurement Methods 0.000 claims description 19
- 238000012360 testing method Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- YSIITVVESCNIPR-UHFFFAOYSA-N Troxipide Chemical compound COC1=C(OC)C(OC)=CC(C(=O)NC2CNCCC2)=C1 YSIITVVESCNIPR-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The invention provides an input voltage automatic adjustment control device capable of being turned off of a digitized automobile combination meter. Based on the prior art, the input voltage automatic adjustment control device capable of being turned off of the digitized automobile combination meter comprises a voltage automatic adjustment circuit, an input voltage detecting terminal and a pulse-width modulation (PWM) adjustment control terminal, wherein the voltage automatic adjustment circuit, the input voltage detecting terminal and the PWM adjustment control terminal are organically matched with a single chip. The PWM adjustment control terminal controls turn-off and switching frequency of an electric switch of the voltage automatic adjustment circuit. When overvoltage exists in an ignition power supply, duty ratio of the PWM is automatically adjusted to control the switching frequency by turning off the ignition power supply and according to change of output voltage of the voltage automatic adjustment circuit, and thereby automatic adjustment of voltage fluctuation of the ignition power supply is achieved, stable operation of the meter is provided with the stable reliable power supply and influences caused by the voltage fluctuation of the ignition power supply on subordinate power supply return circuit is eliminated. The input voltage automatic adjustment control device capable of being turned off of the digitized automobile combination meter has the advantages of being not only capable of effectively improving adaptability of the meter to the change of power supply voltage and changing range applying to voltage, but also novel and unique in design, simple and reasonable in structure and arrangement, stable and reliable in working performance, suitable for popularizing in industries and the like.
Description
Technical field
The present invention relates to a kind of automatic adjusting control device, particularly relate to a kind of by micro controller system to the shutoff of automotive digital instrument entrance point ignition voltage and the automatic adjusting control device this input voltage being carried out to automatic voltage regulation regulable control.
Background technology
Along with science and technology and the development of auto trade, vehicle-mounted ECU is widely used.But due to the change of onboard system, after automotive ignition, generator output voltage is in a kind of fluctuation status all the time, and the interference being subject to electric appliance circuits may be there is, produce the problem of high pressure interference, in order to ensure under priming supply mode of operation, the stable operation of automobile combination meter, just must carry out necessary process to this power supply.
In the past to the control of automobile combination meter priming supply; mainly to utilize and the mode connecing TVS transient voltage suppressor diode controls high pressure to realize protection; but because of the impact by factors such as this response device speed, still have instantaneous pressure and pass through and then burn subsequent conditioning circuit.Problem is caused not to be solved.
summary of the invention:
The object of the invention is to can switching off input voltage automatic adjusting control device what provide a kind of automotive digital instrument.What the voltage fluctuation that this device mainly occurs under fired state to solve reliable turn-off when priming supply occurs that instantaneous interference causes priming supply over voltage and priming supply brought instrument power supply system affects problem.
Can comprising by switching off input voltage automatic adjusting control device of automotive digital instrument of the present invention:
For automobile combination meter work provides the battery power of electric energy;
For automotive ignition and automobile combination meter provide the priming supply of electric energy;
For battery power provides the power module of voltage regulation filtering;
For priming supply provides the power module of voltage regulation filtering;
The present invention also comprises:
According to the testing result of input voltage measurement end, controlled turn off in good time or open priming supply by SCM PWM regulable control end, and the voltage auto-adjusting circuit of control that priming supply voltage during normal work is automatically adjusted;
The voltage that voltage auto-adjusting circuit exports is detected automatically, testing result is sent into micro controller system and as the input voltage measurement end of micro controller system to the input control basic data of PWM regulable control end;
According to the testing result of input voltage measurement end (whether check point ignition source voltage fluctuates in the threshold values of setting), SCM PWM enforcement is utilized the switch OFF of voltage auto-adjusting circuit and switching frequency to be carried out to the PWM regulable control end of control and regulation;
Receive the incoming signal of input voltage measurement end, this signal is carried out data processing, and send control signal to realize the micro controller system controlled switch OFF and the switching frequency of voltage auto-adjusting circuit to PWM regulable control end.
And realize following two kinds of controls by described device:
A, as output voltage (the i.e. U being detected voltage auto-adjusting circuit by micro controller system by input voltage measurement end
aplace's voltage) when exceeding the threshold values of setting; then automatically disconnected by the electronic switch of the PWM regulable control end control voltage auto-adjusting circuit of micro controller system; thus the input voltage of reliable point of cutoff ignition source; and by battery power directly for combination instrument is powered, the reliable automatic protection realized priming supply overvoltage input.
B, as output voltage (the i.e. U being detected voltage auto-adjusting circuit by micro controller system by input voltage measurement end
aplace's voltage) fluctuate in the threshold values of setting, then by the switching frequency of electronic switch in the PWM regulable control end control voltage auto-adjusting circuit of micro controller system, make the output voltage of voltage auto-adjusting circuit be the threshold values set.Reliable realization is to the auto-adjustment control of the power supply voltage of subordinate's circuit.
The present invention is owing to being provided with voltage auto-adjusting circuit, input voltage measurement end, PWM regulable control end coordinates with micro controller system is organic, utilize PWM regulable control end to realize the shutoff of electronic switch and the control of switching frequency in voltage auto-adjusting circuit by Single-chip Controlling, when after ensureing igniting, working power occurs that instantaneous interference causes priming supply over voltage, on the basis of the direct current supply circuit of reliable turn-off priming supply, output voltage according to voltage auto-adjusting circuit changes, the dutycycle of automatic adjustment PWM reaches the switching frequency of electronic switch in control voltage auto-adjusting circuit with this, thus the automatic adjustment realized priming supply voltage fluctuation, namely realize automatically shutting down the auto-adjustment control with instrument input voltage on demand, take into account the control that overvoltage and voltage fluctuation regulate automatically, when ensure that ignition tension works, input voltage within the limits prescribed, for the power line voltage of instrument subordinate circuit with stable.The present invention not only effectively improves the variation range of comformability that instrument change power supply voltage and voltage adaptation, and there is the novel uniqueness of inventive concept, the advantage such as vibrational power flow advantages of simple, stable and reliable working performance, applicable industry are widelyd popularize.
Accompanying drawing explanation
Fig. 1 be automotive digital instrument can switching off input voltage automatic adjusting control device structural representation;
Fig. 2 be automotive digital instrument can voltage auto-adjusting circuit interconnecting wiring diagram in switching off input voltage automatic adjusting control device.
Detailed description of the invention
By Fig. 1, automotive digital instrument shown in Fig. 2 can switching off input voltage automatic adjusting control device, in the requirement situation taking into full account current instrument power supply power supply, in the current supply circuit of instrument, adopt double circuit power supply, be automobile combination meter work and the battery power 1 of electric energy directly power supply and the loop power supply that provides the priming supply 2 of electric energy to be controlled by voltage auto-adjusting circuit 3 for automotive ignition and automobile combination meter is provided, to fluctuate the impact brought to combination instrument to overcome the power supply after ignition operation, set up by aerotron Q1 in the loop that priming supply 2 is directly powered, aerotron Q2 and with aerotron Q1, the biasing resistor R1 that aerotron Q2 base stage connects respectively, R3 and resistance R2, R4, and aerotron Q1 emitter is connected with priming supply 2 through diode D1, aerotron Q2 base stage is connected with PWM regulable control end 4 through series resistance R2, and by the collecting electrode of aerotron Q2 through resistance R3 and aerotron Q1 base series, the electronic switch of the grounded emitter composition of aerotron Q2 forms voltage auto-adjusting circuit 3.At voltage auto-adjusting circuit 3 mouth (i.e. U
aplace) arrange and the voltage of voltage auto-adjusting circuit 3 output is detected automatically, testing result is sent into micro controller system 6 and the input voltage measurement end 5 processed as the input control basic data of micro controller system 6 pairs of PWM regulable control ends and the testing result according to input voltage measurement end (whether check point ignition source voltage fluctuates in the threshold values of setting) 5, SCM PWM enforcement is utilized to carry out the PWM regulable control end 4 of control and regulation to the shutoff of electronic switch in voltage auto-adjusting circuit 3 and switching frequency and receive the incoming signal of input voltage measurement end 5, this signal is carried out data processing, and send control signal to realize the micro controller system 6 controlled switch OFF and the switching frequency of voltage auto-adjusting circuit 3 to PWM regulable control end 4.Certainly, the present invention is also provided with as battery power 1 provides the power module 7 of voltage regulation filtering, provides the power module 8 of voltage regulation filtering and power module 9 for priming supply 2.
The voltage auto-adjusting circuit 3 of the electronic switch formation of aerotron Q1, Q2 and resistance R1-R4 composition is provided with due to the present invention, with the mode of PWM, the conducting controlling aerotron controls output voltage, by the input voltage measurement end 5 that output voltage is connected by micro controller system 6, carry out detection of dynamic, and realize following two kinds of controls:
A, output voltage (the i.e. U of voltage auto-adjusting circuit 3 detected by input voltage measurement end 5 when micro controller system 6
aplace's voltage) when exceeding the threshold values of setting; then automatically disconnected by the electronic switch of the PWM regulable control end 4 control voltage auto-adjusting circuit 3 of micro controller system 6; thus the input voltage of reliable point of cutoff ignition source 2; and by battery power 1 directly for combination instrument is powered, the reliable automatic protection realized the input of priming supply over voltage.
B, output voltage (the i.e. U of voltage auto-adjusting circuit 3 detected by input voltage measurement end 5 when micro controller system 6
aplace's voltage) fluctuate in the threshold values of setting, then the PWM regulable control end 4 by micro controller system 6 regulates the dutycycle of PWM to carry out the switching frequency of the electronic switch of control voltage auto-adjusting circuit 3, makes the output voltage of auto-adjusting circuit 3 be the threshold values set.Thus the auto-adjustment control realized input voltage.
Through the above process to priming supply 2 current supply circuit, after namely ensure that ignition tension overvoltage, automatically shut down priming supply 2, the current supply circuit being instrument by battery power 1 provides the power line voltage of benchmark.Also under the state of ignition tension fluctuation, by the switching frequency of PWM regulable control end 4 regulation electronic switch, thus can reliably realize the auto-adjustment control to the power supply voltage of subordinate's circuit simultaneously.
Claims (2)
1. automotive digital instrument can a switching off input voltage automatic adjusting control device, this device comprises:
For automobile combination meter work provides the battery power (1) of electric energy;
For automotive ignition and automobile combination meter provide the priming supply (2) of electric energy;
For battery power (1) provides the power module (7) of voltage regulation filtering;
For priming supply (2) provides the power module (8,9) of voltage regulation filtering;
This device also comprises:
According to the testing result of input voltage measurement end (5), controlled to turn off in good time or open priming supply (2) by SCM PWM regulable control end (4), and the voltage auto-adjusting circuit (3) of control that priming supply (2) voltage during normal work is automatically adjusted;
The voltage that voltage auto-adjusting circuit (3) exports is detected automatically, testing result is sent into micro controller system (6) and as the input voltage measurement end (5) of micro controller system (6) to the input control basic data of PWM regulable control end (4);
According to the testing result of input voltage measurement end (5), micro controller system (6) PWM enforcement is utilized the switch OFF of voltage auto-adjusting circuit (3) and switching frequency to be carried out to the PWM regulable control end (4) of control and regulation;
Receive the incoming signal of input voltage measurement end (5), this signal is carried out data processing, and send control signal to realize the micro controller system (6) controlled switch OFF and the switching frequency of voltage auto-adjusting circuit (3) to PWM regulable control end (4);
And realize following two kinds of controls by described device:
A, when micro controller system (6) by input voltage measurement end (5) detect voltage auto-adjusting circuit (3) output voltage exceed the threshold values of setting time, then automatically disconnected by the electronic switch of PWM regulable control end (4) the control voltage auto-adjusting circuit (3) of micro controller system (6), thus the input voltage of reliable point of cutoff ignition source (2), and by battery power (1) directly for combination instrument is powered, the reliable automatic protection realized priming supply overvoltage input;
B, when micro controller system (6) by input voltage measurement end (5) detect voltage auto-adjusting circuit (3) output voltage setting threshold values in fluctuate, then by the switching frequency of electronic switch in PWM regulable control end (4) the control voltage auto-adjusting circuit (3) of micro controller system (6), with the threshold values that the output voltage of automatic regulating voltage auto-adjusting circuit (3) is setting, reliably realize the auto-adjustment control to the power supply voltage of subordinate's circuit.
2. automotive digital instrument according to claim 1 can switching off input voltage automatic adjusting control device, it is characterized in that: described voltage auto-adjusting circuit (3) is by aerotron Q1, aerotron Q2 and with aerotron Q1, the biasing resistor R1 that aerotron Q2 base stage connects respectively, R3 and R2, R4, and aerotron Q1 emitter is connected with priming supply (2) through diode D1, aerotron Q2 base stage is connected with PWM regulable control end (4) through series resistance R2, and by the collecting electrode of aerotron Q2 through resistance R3 and aerotron Q1 base series, the electronic switch of the grounded emitter composition of aerotron Q2 is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110318147.1A CN103057419B (en) | 2011-10-19 | 2011-10-19 | Input voltage automatic adjustment control device capable of being turned off of digitized automobile combination meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110318147.1A CN103057419B (en) | 2011-10-19 | 2011-10-19 | Input voltage automatic adjustment control device capable of being turned off of digitized automobile combination meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103057419A CN103057419A (en) | 2013-04-24 |
| CN103057419B true CN103057419B (en) | 2015-06-17 |
Family
ID=48100419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110318147.1A Expired - Fee Related CN103057419B (en) | 2011-10-19 | 2011-10-19 | Input voltage automatic adjustment control device capable of being turned off of digitized automobile combination meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103057419B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201094034Y (en) * | 2007-09-18 | 2008-07-30 | 黄山金马股份有限公司 | Electronic type automobile combined instrument |
| CN101949713A (en) * | 2009-07-10 | 2011-01-19 | 青岛东田汽车电子科技有限公司 | Diagnostic automobile combined instrument, instrument diagnostor and instrument diagnosing method |
| CN202319930U (en) * | 2011-10-19 | 2012-07-11 | 吉林省启明电子科技股份有限公司 | Automatic adjusting control device capable of switching off input voltage of automotive digital instrument |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2848512B2 (en) * | 1994-03-14 | 1999-01-20 | 矢崎総業株式会社 | Vehicle meter device |
| JP3855969B2 (en) * | 2003-06-10 | 2006-12-13 | 株式会社デンソー | Manufacturing method for in-vehicle electronic control device |
-
2011
- 2011-10-19 CN CN201110318147.1A patent/CN103057419B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201094034Y (en) * | 2007-09-18 | 2008-07-30 | 黄山金马股份有限公司 | Electronic type automobile combined instrument |
| CN101949713A (en) * | 2009-07-10 | 2011-01-19 | 青岛东田汽车电子科技有限公司 | Diagnostic automobile combined instrument, instrument diagnostor and instrument diagnosing method |
| CN202319930U (en) * | 2011-10-19 | 2012-07-11 | 吉林省启明电子科技股份有限公司 | Automatic adjusting control device capable of switching off input voltage of automotive digital instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103057419A (en) | 2013-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108896861B (en) | Detection circuit of high-voltage interlocking loop and electric automobile | |
| CN208053267U (en) | A kind of pre- reduction voltage circuit of vehicle electronic control unit power supply | |
| CN108569212A (en) | A kind of fault diagnosis reponse system of automobile LED car light | |
| CN204738878U (en) | Drive protection circuit of intelligent regulation valve | |
| CN202319930U (en) | Automatic adjusting control device capable of switching off input voltage of automotive digital instrument | |
| CN103057419B (en) | Input voltage automatic adjustment control device capable of being turned off of digitized automobile combination meter | |
| CN107193314B (en) | A kind of constant-current circuit of amplifier output voltage clamper in driving tube threshold voltage | |
| CN107819347A (en) | Charging pile control module | |
| CN210273486U (en) | IGBT desaturation protection and drive power supply under-voltage protection circuit | |
| CN200994060Y (en) | PFC overcurrent protection circuit and air conditioner with same | |
| CN204442222U (en) | A kind of electronic regulation adjuster, the system with electronic regulation adjuster and automobile | |
| CN208078901U (en) | A kind of voltage monitoring circuit | |
| CN208423451U (en) | Sample gas pond laser light source light intensity automatic control system is scattered before a kind of | |
| CN207096857U (en) | A kind of constant-current circuit of amplifier output voltage clamper in driving tube threshold voltage | |
| CN209637892U (en) | Atomizer protective device | |
| CN201160273Y (en) | Interference rejection device for analogue quantity switch | |
| CN208934846U (en) | The detection circuit of car ignition module | |
| CN207426781U (en) | Charging pile control module | |
| CN221202386U (en) | Voltage voltage with charging indicator lamp current limiting protection function | |
| CN110867825A (en) | Overvoltage protection circuit of constant power output power supply | |
| CN209942955U (en) | Automobile auxiliary control device based on comparison of rail pressure signal and air inlet pressure signal | |
| CN217037081U (en) | General type automobile generator regulator with self-excitation function | |
| CN109975582B (en) | PWM wave output detection circuit of car | |
| CN110865675B (en) | Power supply control system | |
| CN109286179A (en) | Low phase surge protecter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 |