CN103770735A - Vehicle meter static current control system - Google Patents
Vehicle meter static current control system Download PDFInfo
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- CN103770735A CN103770735A CN201410036838.6A CN201410036838A CN103770735A CN 103770735 A CN103770735 A CN 103770735A CN 201410036838 A CN201410036838 A CN 201410036838A CN 103770735 A CN103770735 A CN 103770735A
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Abstract
The invention provides a vehicle meter static current control system, which is used for controlling a normal-electricity power supply to supply power to a meter. The vehicle meter static current control system comprises a switch circuit, an acquiring module and a controller, wherein the switch circuit is used for selectively powering off or on a normal-electricity power supply circuit between the normal-electricity power supply and the meter; the acquiring module is used for detecting the power-supply state that whether an IG power supply supplies power to the meter or not; the controller is used for controlling the switch circuit to power off or on the normal-electricity power supply circuit according to the power-supply state of the IG power supply. The controller is configured to control the switch circuit to power off the normal-electricity power supply circuit when the IG power supply stops supplying power to the meter or after preset time is delayed from the time when the IG power supply stops supplying power to the meter, so that the consumption of static current probably generated between a storage battery and the meter to the electric quantity of the storage battery is effectively prevented, the phenomenon of electricity loss of the storage battery is not easy to cause, the service life is prolonged, and the power quality of the vehicle is guaranteed.
Description
Technical field
The present invention relates to the control circuit field of vehicle, particularly relate to a kind of vehicular meter quiescent current control system.
Background technology
Universal along with riding vehicle, the design concept of automobile except will having basic safety control and outward appearance, the ancillary system of automobile also gradually become a principal element that attracts car owner.In car load, in the increase of various ancillary systems, must make the electric quantity consumption of car load storage battery increase, the flying power that therefore how to extend storage battery, becomes particularly important thereby improve power quality.Wherein, the quiescent current producing between the instrument of automobile and storage battery is one of accumulator electric-quantity consumption form, and under this quiescent current effect, instrument is merely able to use its partial function.But when particularly vehicle need to carry out parking of long period, this partial function role of instrument is little, on the contrary, be easy to make storage battery and occur electric deficiency phenomenon because of long-time consumption, make troubles to the normal operation of a lot of automobiles.
Summary of the invention
An object of the present invention is to provide a kind of vehicular meter quiescent current control system, can under predetermined condition, the normal electric supply access between normal power supply and instrument be cut off.
Another further object of the present invention be to make above-mentioned control system can predetermined condition under by the normal electric supply access conducting between normal power supply and instrument.
Another further object of the present invention is to adopt manual mode to open or close the control to the normal electric supply access between normal power supply and instrument.
Especially, the invention provides a kind of vehicular meter quiescent current control system, for controlling the power supply of normal power supply to instrument, comprising:
Switch circuit, for optionally cut off or conducting described in normal electric supply access between normal power supply and described instrument;
Acquisition module, for surveying IG power supply whether to the power supply state of described instrument power supply;
Controller, for according to described in the power supply state control of described IG power supply switch circuit cut off or conducting described in normal electric supply access;
Wherein, described controller is configured to stop controlling the described normal electric supply access of described switch circuit cut-out to described instrument power supply starts delay scheduled time in the time that described IG power supply stops to described instrument power supply or from described IG power supply.
Further, described controller is also configured to control normal electric supply access described in described switch circuit conducting in the time that described IG power supply starts to described instrument power supply.
Further, described switch circuit comprises the aerotron as on-off element, and described controller is configured as to described aerotron control level is provided.
Further, described instrument is combination instrument, the microprocessor that described controller is described combination instrument.
The present invention also provides a kind of vehicular meter quiescent current control system, for controlling the power supply of normal power supply to instrument, comprising:
Switch circuit, for optionally cut off according to a control signal or conducting described in normal electric supply access between normal power supply and described instrument;
Controller, for provide to described switch circuit described control signal with control described switch circuit and cut off or conducting described in normal electric supply access; Described control signal has the dissengaged positions that makes described switch circuit carry out rupturing operation and makes described switch circuit carry out the conducting state of conducting operation;
Acquisition module, for whether surveying IG power supply to described instrument power supply, and provides corresponding IG Power supply status signal to described controller; Described IG Power supply status signal has the described IG power supply of expression to the IG power supply state of described instrument power supply and represents that described IG power supply does not have the non-powered state of IG to described instrument power supply;
Signal input unit, produces user instruction signal for the manual input according to user, and described user instruction signal is sent to described controller; Described user instruction signal has the closed condition that represents to open the opening of normal electric supply access control and represent to close normal electric supply access control;
Wherein, described controller is configured to the described user instruction signal in described closed condition, control normal electric supply access described in described switch circuit conducting in the case of receiving, and, in the time that IG power supply stops to described instrument power supply or from described IG power supply, stop controlling the described normal electric supply access of described switch circuit cut-out to described instrument power supply starts delay scheduled time according to described IG Power supply status signal in the case of receiving the described user instruction signal in described opening.
Further, described controller is also configured in the time that described IG power supply starts to described instrument power supply, control normal electric supply access described in described switch circuit conducting in the case of receiving the described user instruction signal in described opening according to described IG Power supply status signal.
Further, described controller has arithmetic-logic unit, described arithmetic-logic unit is configured in the non-powered state of described IG, make described controller formation send the described control signal in described dissengaged positions to described switch circuit at the received described user instruction signal of described controller in described opening and received described IG Power supply status signal, otherwise makes described controller send the described control signal in described conducting state to described switch circuit.
Further, described switch circuit comprises the aerotron as on-off element, the control level of the described control signal of described controller for providing to described aerotron.
Further, described instrument is combination instrument, the microprocessor that described controller is described combination instrument.
Vehicular meter quiescent current control system of the present invention, controller can be in the time that IG power supply stops to instrument power supply or from IG power supply stops starting delay scheduled time to instrument power supply the normal electric supply access of master cock circuitry cuts, thereby effectively block the consumption to accumulator electric-quantity of issuable quiescent current between storage battery and instrument, make storage battery be not easy to occur the phenomenon of power shortage, extend working time, guarantee vehicle power quality.
Vehicular meter quiescent current control system of the present invention, controller is by the disconnection as the aerotron of on-off element in master cock circuit, thus issuable quiescent current between blocking-up storage battery and instrument is simple to operate, accurate quick.
Vehicular meter quiescent current control system of the present invention, controller can be controlled the normal electric supply access of switch circuit conducting in the time that IG power supply starts to instrument power supply, guarantees that the repertoire of instrument normally uses, and guarantees safety performance.
Of the present invention is vehicular meter quiescent current control system, and the control to the normal electric supply access between normal power supply and instrument is opened or closed to the command signal that can also manually input generation according to user, makes operation more diversified, and applicability is stronger.
According to the detailed description to the specific embodiment of the invention by reference to the accompanying drawings below, those skilled in the art will understand above-mentioned and other objects, advantage and feature of the present invention more.
Accompanying drawing explanation
Hereinafter describe specific embodiments more of the present invention in detail in exemplary and nonrestrictive mode with reference to the accompanying drawings.In accompanying drawing, identical Reference numeral has indicated same or similar parts or part.It should be appreciated by those skilled in the art that these accompanying drawings may not draw in proportion.In accompanying drawing:
Fig. 1 is the circuit arragement schematic diagram of vehicular meter quiescent current control system according to an embodiment of the invention.
The specific embodiment
Fig. 1 is the circuit arragement schematic diagram of vehicular meter quiescent current control system according to an embodiment of the invention, and it can be for controlling the power supply of Vehicle Power to instrument 4.Control system of the present invention can comprise switch circuit 5, acquisition module 7, signal input unit 8 and controller 3.
The power supply of powering for instrument 4 on vehicle can comprise normal power supply 1 and IG power supply 2.The normally storage battery of vehicle of normal power supply 1.Under the powering mode of normal power supply 1, instrument 4 only has partial function normally to use, such as being merely able to that vehicle door status signal and some alerting signals are shown.IG power supply 2 is the electrical generator of vehicle normally.Under the powering mode of IG power supply 2, the repertoire of instrument 4 can normally use.Be appreciated that the instrument 4 that Fig. 1 draws can be a combination instrument, also can represent single discrete instrument, or can represent the combination of the discrete instrument of multiple parallel connections.
As shown in Figure 1, the normal electric supply access 101 of normal power supply 1 and the IG supply access 102 of IG power supply 2 can lead to the voltage input end Vin of controller 3 after Voltage stabilizing module 6, and power to instrument 4 via controller 3.In normal electric supply access 101 and IG supply access 102, can also be respectively equipped with protection diode D1 and D2.
Fig. 1 shows the exemplary implementation of one of this switch circuit 5, and it can be made up of PNP aerotron Q1 and peripheral circuit thereof as on-off element.Particularly, as shown in Figure 1, the mouth of normal power supply 1 is connected to the emitter e of PNP aerotron Q1, and the collecting electrode c of PNP aerotron Q1 is connected to the input end of Voltage stabilizing module 6 via protection diode D1.In addition, between the emitter e of PNP aerotron Q1 and base stage b, be connected with divider resistance R1, between the base stage b of PNP aerotron Q1 and the control end Ctrl of controller 3, be connected with divider resistance R2.Like this, controller 3 is by providing suitable high or low control level as control signal at its control end Ctrl, just can form required control level at the base stage b place of PNP aerotron Q1, to control PNP aerotron Q1 in saturated or by state, thus correspondingly conducting or cut off this normal electric supply access 101.In other words the control signal that, controller 3 produces at its control end Ctrl can have dissengaged positions and conducting state.When this control signal is during in dissengaged positions, for example, while being low control level, this can make switch circuit 5 cut off these normal electric supply accesses 101; In the time that this control signal is positioned at conducting state, for example, while being high control level, this can make this normal electric supply access 101 of switch circuit 5 conductings.It should be noted that, the structure of the switch circuit 5 shown in Fig. 1 is only principle and exemplary, in other embodiments, switch circuit 5 can also adopt other applicable circuit, as long as controller 3 can be controlled its cut-out or the normal electric supply access 101 of conducting.In other embodiments, switch circuit 5 also can be integrated in controller 3.
According to the present invention, controller 3 can carry out according to the power supply state of IG power supply 2 disconnection or the closure of master cock circuit 5, thereby cuts off or the normal electric supply access 101 of conducting.For this reason, can also comprise acquisition module 7 according to control system of the present invention, the power supply state of whether powering to instrument 4 to survey IG power supply 2.As shown in Figure 1, one end of acquisition module 7 can be connected to IG supply access 102, judges by the curtage signal of surveying in IG supply access 102 whether IG power supply 2 powers.The other end of acquisition module 7 can be connected to controller 3, to provide corresponding IG Power supply status signal to controller 3.This IG Power supply status signal can have expression IG power supply 2 the IG power supply state of powering to instrument 4 and the non-powered state of IG that represents that IG power supply 2 is not powered to instrument 4.The IG Power supply status signal that controller 3 can receive from acquisition module 7 judges whether IG power supply 2 powers, thereby correspondingly cuts off by master cock circuit 5 or this normal electric supply access 101 of conducting.
According to the present invention, controller 3 can stop starting delay scheduled time to instrument 4 power supplies in the time that IG power supply 2 stops powering to instrument 4 or from IG power supply 2, master cock circuit 5 cuts off this normal electric supply access 101.Like this, when after vehicle is flame-out, IG power supply 2 is stopped power supply, acquisition module 7 just sends the status signal in the non-powered state of IG to controller 3.3 of controllers can according to this status signal immediately or the backward switch circuit 5 of delay scheduled time send the control signal in dissengaged positions, for the switch circuit 5 shown in Fig. 1, this control signal can be low control level.Then, based on this control signal of controller 3, switch circuit 5 cuts off normal electric supply access 101, thereby effectively block the consumption to accumulator electric-quantity as the issuable quiescent current between storage battery and the instrument 4 of normal power supply 1, this makes storage battery be not easy to occur the phenomenon of power shortage, extend working time, guarantee vehicle power quality.In the situation that delay scheduled time cuts off normal electric supply access 101, can allow the power supply that keeps normal power supply 1 in and vehicle locking during this period of time flame-out at vehicle, make instrument 4 still can provide necessary prompting (as car door does not close etc.) to user, and after normal and safety interlocking, just cut off normal electric supply access 101 at vehicle.This schedule time postponing can be selecting in the scope by several hours from a few minutes.
Be appreciated that controller 3 can also start to control the normal electric supply access 101 of switch circuit 5 conducting in the time that instrument 4 is powered at IG power supply 2.Like this, when after vehicle ignition, IG power supply 2 starts to power, acquisition module 7 just sends the status signal in IG power supply state to controller 3.3 of controllers can send the control signal in conducting state to switch circuit 5 immediately according to this status signal, and for the switch circuit 5 shown in Fig. 1, this control signal can be high control level.Then, based on this control signal of controller 3, the normal electric supply access 101 of switch circuit 5 conducting.Like this, the state that normal power supply 1 and IG power supply 2 were powered to instrument 4 in the normal while, the repertoire of instrument 4 normally uses when guaranteeing normally to travel, improves safety performance.
Can under the state of vehicle immobilization, realize the control to the quiescent current between normal power supply 1 and instrument 4 according to hereinbefore described scheme, this is particularly conducive to the protection to storage battery in the situation that of the long-term stagnation of movement of vehicle.But, being appreciated that the user for frequent use vehicle, such control may be unnecessary or undesirable.For this reason, can also comprise additional signal input unit 8 according to control system of the present invention, produce user instruction signal for the manual input according to user, and user instruction signal is sent to controller 3.This user instruction signal can have the closed condition that represents to open the opening of normal electric supply access control and represent to close normal electric supply access control.In other words,, when user instruction signal is during in opening, represent that user wishes that controller 3 disconnects normal electric supply access 101 or the control operation of conducting; But, when user instruction is during in closed condition, represent that user does not wish that controller 3 carries out any opening operation to normal electric supply access 101, but wish that normal electric supply access 101 continues instrument 4 to power as common mode.
As shown in Figure 1, this signal input unit 8 can comprise signal input module 801 and master cock 802, by signal input module 801, user is converted into user instruction signal to the M/C of master cock 802, then is sent to controller 3.Master cock 802 can be various pressing or revolving key or button, can be also user's inputting interface or the interface of driving read-out.For example, can on driving read-out, present name to user and be called the configuration item of " P-choice ", when user selects " P-choice ", on driving read-out, there will be ON(" unlatchings ") or OFF(" close ") two options supply user's selection.In the time that user selects " ON ", signal input module 801 can correspondingly send the user instruction signal in opening to controller 3; Similarly, in the time that user selects " OFF ", signal input module 801 can correspondingly send the user instruction signal in closed condition to controller 3.
Under these circumstances, the user instruction signal that the IG Power supply status signal that controller 3 not only will provide according to acquisition module 7 also will provide according to signal input unit 8 judges wants conducting still to cut off normal electric supply access 101.Particularly, controller 3 can be in the case of receiving the normal electric supply access 101 of master cock circuit 5 conducting the user instruction signal in closed condition.Receive the user instruction signal in opening at controller 3, controller 3 to the control of normal electric supply access 101 as described previously, can stop according to IG Power supply status signal starting delay scheduled time to instrument 4 power supplies in the time that IG power supply 2 stops powering to instrument 4 or from IG power supply 2, master cock circuit 5 cuts off normal electric supply access 101, can also start to control the normal electric supply access 101 of switch circuit 5 conducting at IG power supply 2 in the time that instrument 4 is powered according to IG Power supply status signal.This mode of controller 3 can be carried out logic operation by the arithmetic-logic unit in it and be realized.Table 1 shows the truth table of this arithmetic-logic unit.
Table 1
| User instruction signal | IG Power supply status | Control signal | |
| 1 | 1 | 0 | |
| 1 | 0 | 1 |
| 0 | 1 | 1 |
| 0 | 0 | 1 |
In table 1, for the user instruction signal being provided by signal input unit 8, " 1 " represents to open the opening of normal electric supply access control, and " 0 " represents to close the closed condition of normal electric supply access control; For the IG Power supply status signal being provided by acquisition module 7, " 1 " represents the non-powered state of IG that IG power supply 2 is not powered to instrument 4, and " 0 " represents the IG power supply state that IG power supply 2 is powered to instrument 4; For the control signal for master cock circuit 5 finally being provided by controller 3, " 1 " represents to make the conducting state of the normal electric supply access 101 of switch circuit 5 conducting, and " 0 " represents to make switch circuit 5 cut off the dissengaged positions of normal electric supply access 101.Above-described logical zero and " 1 " can be corresponding to high level and low levels.Can find out according to table 1, this arithmetic-logic unit can be realized by a NAND gate simply, and wherein, user instruction signal and IG Power supply status signal can be used as the input end of this NAND gate, and control signal is as the mouth of this NAND gate.
In one embodiment, this controller 3 can be realized by the microprocessor of instrument 4, and in other words, it is a part for whole instrument 4 that the controller 3 shown in Fig. 1 can be considered as.In another unshowned embodiment, this controller 3 can be still one with the discrete individual devices of instrument 4, but normal electric supply access 101 and IG supply access 102 can directly not lead to instrument 4 via controller 3, controller 3 is only for the break-make of master cock circuit 5.
So far, those skilled in the art will recognize that, illustrate and described of the present invention multiple exemplary embodiment although detailed herein, but, without departing from the spirit and scope of the present invention, still can directly determine or derive many other modification or the modification that meet the principle of the invention according to content disclosed by the invention.Therefore, scope of the present invention should be understood and regard as and cover all these other modification or modifications.
Claims (9)
1. a vehicular meter quiescent current control system, for controlling the power supply of normal power supply to instrument (4), comprising:
Switch circuit (5), for optionally cut off or conducting described in normal electric supply access (101) between normal power supply (1) and described instrument (4);
Acquisition module (7), the power supply state of whether powering to described instrument (4) for surveying IG power supply (2);
Controller (3), for according to described in the power supply state control of described IG power supply (2) switch circuit (5) cut off or conducting described in normal electric supply access (101);
Wherein, described controller (3) is configured in the time that described IG power supply (2) stops powering to described instrument (4) or stops controlling described switch circuit (5) from described IG power supply (2) to described instrument (4) power supply beginning delay scheduled time cut off described normal electric supply access (101).
2. vehicular meter quiescent current control system according to claim 1, it is characterized in that, described controller (3) is also configured to normal electric supply access (101) described in described IG power supply (2) starts to control described switch circuit (5) conducting in the time that described instrument (4) is powered.
3. vehicular meter quiescent current control system according to claim 1 and 2, is characterized in that, described switch circuit (5) comprises the aerotron as on-off element, and described controller (3) is configured as to described aerotron control level is provided.
4. according to the vehicular meter quiescent current control system described in any one in claim 1-3, it is characterized in that, described instrument (4) is combination instrument, the microprocessor that described controller (3) is described combination instrument.
5. a vehicular meter quiescent current control system, for controlling the power supply of normal power supply to instrument (4), comprising:
Switch circuit (5), for optionally cut off according to a control signal or conducting described in normal electric supply access (101) between normal power supply (1) and described instrument (4);
Controller (3), for provide to described switch circuit (5) described control signal with control described switch circuit (5) cut off or conducting described in normal electric supply access (101); Described control signal has the dissengaged positions that makes described switch circuit (5) carry out rupturing operation and the conducting state that makes described switch circuit (5) carry out conducting operation;
Acquisition module (7), for whether surveying IG power supply (2) to described instrument (4) power supply, and provides corresponding IG Power supply status signal to described controller (3); Described IG Power supply status signal has the described IG power supply of expression (2) to the IG power supply state of described instrument (4) power supply and represents the non-powered state of IG that described IG power supply (2) is not powered to described instrument (4);
Signal input unit (8), produces user instruction signal for the manual input according to user, and described user instruction signal is sent to described controller (3); Described user instruction signal has the closed condition that represents to open the opening of normal electric supply access control and represent to close normal electric supply access control;
Wherein, described controller (3) is configured to the described user instruction signal in described closed condition, control normal electric supply access (101) described in described switch circuit (5) conducting in the case of receiving, and, in the case of receiving the described user instruction signal in described opening according to described IG Power supply status signal in the time that IG power supply (2) stops powering to described instrument (4) or stopping from described IG power supply (2) cutting off described normal electric supply access (101) to controlling described switch circuit (5) described instrument (4) power supply starts delay scheduled time.
6. vehicular meter quiescent current control system according to claim 5, it is characterized in that, described controller (3) is also configured in the case of receiving the described user instruction signal in described opening according to described IG Power supply status signal at normal electric supply access (101) described in described IG power supply (2) starts to control described switch circuit (5) conducting in the time that described instrument (4) is powered.
7. according to the vehicular meter quiescent current control system described in claim 5 or 6, it is characterized in that, described controller (3) has arithmetic-logic unit, described arithmetic-logic unit is configured in the non-powered state of described IG, make described controller (3) formation send the described control signal in described dissengaged positions to described switch circuit (5) at the received described user instruction signal of described controller (3) in described opening and received described IG Power supply status signal, otherwise make described controller (3) send the described control signal in described conducting state to described switch circuit (5).
8. according to the vehicular meter quiescent current control system described in any one in claim 5-7, it is characterized in that, described switch circuit (5) comprises the aerotron as on-off element, the control level of the described control signal of described controller (3) for providing to described aerotron.
9. according to the vehicular meter quiescent current control system described in any one in claim 5-8, it is characterized in that, described instrument (4) is combination instrument, the microprocessor that described controller (3) is described combination instrument.
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| CN201410036838.6A CN103770735B (en) | 2014-01-26 | 2014-01-26 | A kind of vehicular meter quiescent current control system |
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| CN201410036838.6A CN103770735B (en) | 2014-01-26 | 2014-01-26 | A kind of vehicular meter quiescent current control system |
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| CN110182151A (en) * | 2019-05-14 | 2019-08-30 | 惠州市德赛西威汽车电子股份有限公司 | A kind of potentiometer circuit of low quiescent current |
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| CN103770735B (en) | 2016-03-30 |
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