CN103914015A - Monostable control signal output anti-jamming unit and method of power module of automobile electronic equipment - Google Patents
Monostable control signal output anti-jamming unit and method of power module of automobile electronic equipment Download PDFInfo
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- CN103914015A CN103914015A CN201410107904.4A CN201410107904A CN103914015A CN 103914015 A CN103914015 A CN 103914015A CN 201410107904 A CN201410107904 A CN 201410107904A CN 103914015 A CN103914015 A CN 103914015A
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Abstract
The invention provides a monostable control signal output anti-jamming unit and method of a power module of automobile electronic equipment, and belongs to the field of signal control. In order to improve reliability and stability of control over the power module by an automobile MCU and reduce influence on control signals of electromagnetic interference, the monostable control signal output anti-jamming unit comprises a diode D902, a first resistor R901, a second resistor R924, a second capacitor C906 and a control signal generator V901, a first capacitor C930 and a third resistor R902 are added, a discharging circuit is composed of the first capacitor C930 and the third resistor R902, the discharging circuit effectively avoids transient impulse interference and mistaken operation, the control signal generator V901 is adopted at the same time, and the MCU is connected with the control signal generator V901. Thus, only the MCU makes the control signal generator V901 control powering off and restarting of the power module of the automobile electronic equipment according to requirements of a program. The monostable control signal output anti-jamming unit and method are used for controlling the power module of the automobile electronic equipment.
Description
Technical field
The present invention relates to a kind of signal output means for anti-jamming and method, belong to signal controlling field.
Background technology
Enabling and controlling of the power module of current vehicle electronics is mostly the key electricity IG power supply by automobile, and the power module of vehicle electronics is enabled and controlled, and only after power module is enabled, just can make power supply output normal; Wherein, so-called key electricity IG power supply refers to that key gets to the power supply that ON shelves are connected, the power supply not disconnecting in namely engine start process; This part electrical appliance one is to power to necessary electrical appliance in engine starting process, the 2nd, and in the situation that turning round, engine operation just uses, take from the power supply of generator, the possibility of having striven power supply while having avoided as charge in batteries.
But because the stability of the power module of vehicle electronics is subject to the impact of the electromagnetic interference (EMI) of automotive interior, thereby cause the ability of the power module of vehicle electronics being controlled by automobile microcontroller program to reduce, be difficult to reach by the means of software program and realize smoothly the object restarting of controlling electronic equipment hardware.
Along with popularizing of automobile operating system, the operating system of increasing Android system and degree of depth customization is used on vehicle electronics, therefore ensure the stability of the power module of vehicle electronics, strengthen its anti-electromagnetic interference capability, adopting MCU (MicroControllerUnit) Chinese is multipoint control unit, claims again the power module of the software program control vehicle electronics such as one chip microcomputer to restart and just seems particularly important.
Summary of the invention
The present invention is in order to improve the reliability and stability of automobile microcontroller to power module control, reduce the problem of the impact of electromagnetic interference (EMI) on control signal, a kind of monostable control signal output means for anti-jamming and anti-interference method of power module of vehicle electronics is provided.
The monostable control signal output means for anti-jamming of the power module of vehicle electronics of the present invention, the voltage signal input end of the key IG power supply of the monostable control signal output means for anti-jamming of the power module of described vehicle electronics is connected with the voltage signal output end of automobile key IG power supply; The enable signal output terminal of the monostable control signal output means for anti-jamming of the power module of described vehicle electronics is connected by the enable pin of vehicle electronics power module and the enable signal input end of vehicle electronics power module; The effective control signal output terminal of high level of automobile microcontroller connects the effective control signal input end of high level of the monostable control signal output means for anti-jamming of the power module of vehicle electronics;
The monostable control signal output means for anti-jamming of the power module of described vehicle electronics comprises diode, resistance, No. two resistance, No. three resistance, electric capacity, No. two electric capacity and control signal generator;
The anode of described diode is the key IG power supply voltage signal input end of the monostable control signal output means for anti-jamming of the power module of vehicle electronics, the negative electrode of diode connects one end of a resistance, and the other end of this resistance is No. 3 pins, one end of No. two resistance, one end of an electric capacity, one end of No. three resistance and No. 1 pin of control signal generator of connection control signal generator simultaneously;
The other end of described No. two resistance is No. 2 pins and the power supply ground of connection control signal generator simultaneously;
One end and the power supply ground of No. 6 pins of the other end while connection control signal generator of described No. three resistance, the other end of an electric capacity, No. two electric capacity;
No. 4 output pins of described control signal generator are the output pin of the enable signal of monostable control signal output means for anti-jamming, when this pin is used for connecting the power module enable pin of vehicle electronics, connect the other end of No. two electric capacity;
No. 5 input pins of described control signal generator are connected with the high level useful signal output terminal of MCU.
What described diode adopted is that model is the diode of SOT-23-BAS21.
A described resistance, No. two resistance and No. three resistance all adopt be that model is the resistance of RC-0603-10K-J.
What described control signal generator adopted is that model is the control signal generation chip of SOT23-6-IMD3A.
The electric capacity that the model that a described electric capacity adopts is 50TGX47M6.3X8.
What described No. two electric capacity adopted is that capacitance is the electric capacity of 0.01uF.
The anti-interference method of the monostable control signal output means for anti-jamming of the power module of vehicle electronics, the method implementation procedure is:
Step 1, key IG power supply electrifying, the key IG power supply voltage signal input end of the monostable control signal output means for anti-jamming of the power module of vehicle electronics receives the voltage signal that key IG power supply sends, and described voltage signal inputs to No. 3 pins of control signal generator after diode counnter attack after a shunt resistance filtering again; And by control signal generator again after filtering through the enable signal of No. 4 output pin stable outputs of control signal generator;
The voltage signal that step 2, key IG power supply send is a capacitor charging after by a shunt resistance filtering;
Step 3, the discharge circuit that is made up of electric capacity and No. three resistance provide high level signal for control signal generator, make it continue normal work, the significant level time of control signal generator is by regulating the capacitance of an electric capacity and the resistance value of No. three resistance to control;
Step 4, when after elapsed time interval T, when No. 5 pins that automobile microcontroller is control signal generator provide high level useful signal, No. 4 output pins of control signal generator can stop as its enable pin provides effective signal, and the power module of described vehicle electronics quits work;
Step 5, stop providing effective high level signal for No. 5 pins of control signal generator when automobile microcontroller, now control signal generator No. 5 pins present low level, key IG power supply can continue as control signal generator provides and stablizes high level useful signal, make No. 4 output pins output high level useful signals of control signal generator, the power module of vehicle electronics provides power supply for vehicle electronics power module.
Advantage of the present invention: the present invention is by adopting the discharge circuit being made up of capacitor C 930 and No. three resistance R 902, extraneous of short duration impulse disturbances and maloperation are effectively avoided, adopted control signal generator V901, microcontroller is connected with control signal generator V901 simultaneously; Thereby when having guaranteed to have only microcontroller and need to controlling control signal generator V901 and control the closing and restart of power module of vehicle electronics according to program, make the closing and restart smooth and easy in time of power module of vehicle electronics, than not adopting this anti-interference rate of installing diamagnetic interference to improve 50%, and then whole equipment operating efficiency and reliability are improved.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of the monostable control signal output means for anti-jamming of the power module of vehicle electronics of the present invention.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, the monostable control signal of the power module of vehicle electronics output means for anti-jamming described in present embodiment, the key IG power supply 1 voltage signal input end of the monostable control signal output means for anti-jamming 4 of the power module of vehicle electronics is connected with the voltage signal output end of automobile key IG power supply 1; The enable signal output terminal of the monostable control signal output means for anti-jamming 4 of the power module of described vehicle electronics is connected by the enable pin of vehicle electronics power module 3 and the enable signal input end of vehicle electronics power module 3; The effective control signal output terminal of high level of automobile microcontroller 2 connects the effective control signal input end of high level of the monostable control signal output means for anti-jamming 4 of the power module of vehicle electronics;
The monostable control signal output means for anti-jamming 4 of the power module of described vehicle electronics comprises diode D902, resistance R 901, No. two resistance R 924, No. three resistance R 902, capacitor C 930, No. two capacitor C 906 and control signal generator V901;
The anode of described diode D902 is the key IG power supply voltage signal input end of the monostable control signal output means for anti-jamming of the power module of vehicle electronics, the negative electrode of diode D902 connects one end of a resistance R 901, and the other end of this resistance R 901 is No. 3 pins, one end of No. two resistance R 924, one end of a capacitor C 930, one end of No. three resistance R 902 and No. 1 pin of control signal generator V901 of connection control signal generator V901 simultaneously;
The other end of described No. two resistance R 924 is No. 2 pins and the power supply ground of connection control signal generator V901 simultaneously;
One end and the power supply ground of No. 6 pins of the other end while connection control signal generator V901 of described No. three resistance R 902, the other end of a capacitor C 930, No. two capacitor C 906;
No. 4 output pins of described control signal generator V901 are the enable signal output terminal of monostable control signal output means for anti-jamming, and No. 4 output pins of described control signal generator V901 connect the other end of power module enable pin and No. two capacitor C 906 of vehicle electronics simultaneously;
No. 5 input pins of described control signal generator V901 are connected with the effective control signal output terminal of high level of MCU2.
Embodiment two: below in conjunction with Fig. 1, present embodiment is described, present embodiment is described further embodiment one, what the diode D902 described in present embodiment adopted is that model is the diode of SOT-23-BAS21.
Embodiment three: present embodiment is described below in conjunction with Fig. 1, present embodiment is described further embodiment one, a resistance R described in present embodiment 901, No. two resistance R 924 and No. three resistance R 902 what all adopt is that model is the resistance of RC-0603-10K-J.
Embodiment four: below in conjunction with Fig. 1, present embodiment is described, present embodiment is described further embodiment one, what the control signal generator V901 described in present embodiment adopted is that model is the control signal generation chip of SOT23-6-IMD3A.
Embodiment five: below in conjunction with Fig. 1, present embodiment is described, present embodiment is described further embodiment one, the electric capacity that the model that a capacitor C 930 described in present embodiment adopts is 50TGX47M6.3X8.
Embodiment six: below in conjunction with Fig. 1, present embodiment is described, present embodiment is described further embodiment one, what No. two capacitor C 906 described in present embodiment adopted is that capacitance is the electric capacity of 0.01uF.
Embodiment seven: below in conjunction with Fig. 1, present embodiment is described, the anti-interference method of the monostable control signal output means for anti-jamming of the power module of the vehicle electronics described in present embodiment, the implementation procedure of the method is:
Step 1, key IG power supply 1 power on, the key IG power supply voltage signal input end of the monostable control signal output means for anti-jamming 4 of the power module of vehicle electronics receives the voltage signal that key IG power supply 1 sends, and described voltage signal inputs to No. 3 pins of control signal generator V901 after diode D902 counnter attack after a resistance R 901 is shunted filtering again; And by control signal generator V901 again after filtering through the enable signal of No. 4 output pin stable outputs of control signal generator V901;
The voltage signal that step 2, key IG power supply 1 send is that a capacitor C 930 is charged after shunting filtering by a resistance R 901;
Step 3, the discharge circuit that is made up of capacitor C 930 and No. three resistance R 902 provide high level signal for control signal generator V901, make it continue normal work, the significant level time of control signal generator V901 is by regulating the capacitance of a capacitor C 930 and the resistance value of No. three resistance R 902 to control;
Step 4, when after elapsed time interval T, when No. 5 pins that automobile microcontroller 2 is control signal generator V901 provide high level useful signal, No. 4 output pins of control signal generator V901 can stop as its enable pin provides effective signal, and the power module of described vehicle electronics quits work;
Step 5, stop providing effective high level signal for No. 5 pins of control signal generator V901 when automobile microcontroller 2, now control signal generator V901 No. 5 pins present low level, key IG power supply 1 can continue as control signal generator V901 provides and stablizes high level useful signal, make No. 4 output pins output high level useful signals of control signal generator V901, the power module of vehicle electronics provides power supply for vehicle electronics power module 3.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For this person of an ordinary skill in the technical field, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to the definite scope of patent protection of claims that the present invention submits to.
Claims (7)
1. the monostable control signal of the power module of vehicle electronics output means for anti-jamming, is characterized in that key IG power supply (1) the voltage signal input end of the monostable control signal output means for anti-jamming (4) of the power module of vehicle electronics is connected with the voltage signal output end of automobile key IG power supply (1); The enable signal output terminal of the monostable control signal output means for anti-jamming (4) of the power module of described vehicle electronics is connected with the enable signal input end of vehicle electronics power module (3) by the enable pin of vehicle electronics power module (3); The effective control signal output terminal of high level of automobile microcontroller (2) connects the effective control signal input end of high level of the monostable control signal output means for anti-jamming (4) of the power module of vehicle electronics;
The monostable control signal output means for anti-jamming (4) of the power module of described vehicle electronics comprises diode (D902), a resistance (R901), No. two resistance (R924), No. three resistance (R902), an electric capacity (C930), No. two electric capacity (C906) and control signal generator (V901);
The anode of described diode (D902) is the key IG power supply voltage signal input end of the monostable control signal output means for anti-jamming of the power module of vehicle electronics, the negative electrode of diode (D902) connects one end of a resistance (R901), No. 3 pins of the other end while connection control signal generator (V901) of this resistance (R901), one end of No. two resistance (R924), one end, one end of No. three resistance (R902) and No. 1 pin of control signal generator (V901) of an electric capacity (C930);
The other end of described No. two resistance (R924) is No. 2 pins and the power supply ground of connection control signal generator (V901) simultaneously;
One end of No. 6 pins of the other end while connection control signal generator (V901) of described No. three resistance (R902), the other end of an electric capacity (C930), No. two electric capacity (C906) and power supply ground;
No. 4 output pins of described control signal generator (V901) are the enable signal output terminal of monostable control signal output means for anti-jamming, and No. 4 output pins of described control signal generator (V901) connect the power module enable pin of vehicle electronics and the other end of No. two electric capacity (C906) simultaneously;
No. 5 input pins of described control signal generator (V901) and MCU(2) the effective control signal output terminal of high level be connected.
2. the monostable control signal of the power module of vehicle electronics is exported means for anti-jamming according to claim 1, it is characterized in that, what described diode (D902) adopted is that model is the diode of SOT-23-BAS21.
3. the monostable control signal of the power module of vehicle electronics is exported means for anti-jamming according to claim 1, it is characterized in that, a described resistance (R901), No. two resistance (R924) and No. three resistance (R902) all adopt be that model is the resistance of RC-0603-10K-J.
4. the monostable control signal of the power module of vehicle electronics is exported means for anti-jamming according to claim 1, it is characterized in that, what described control signal generator (V901) adopted is that model is the control signal generation chip of SOT23-6-IMD3A.
5. the monostable control signal of the power module of vehicle electronics is exported means for anti-jamming according to claim 1, it is characterized in that the electric capacity that the model that a described electric capacity (C930) adopts is 50TGX47M6.3X8.
6. the monostable control signal of the power module of vehicle electronics is exported means for anti-jamming according to claim 1, it is characterized in that, what described No. two electric capacity (C906) adopted is that capacitance is the electric capacity of 0.01uF.
7. application rights requires the anti-interference method of the monostable control signal output means for anti-jamming of the power module of vehicle electronics described in 1, it is characterized in that, the implementation procedure of the method is:
Step 1, key IG power supply (1) power on, the key IG power supply voltage signal input end of the monostable control signal output means for anti-jamming (4) of the power module of vehicle electronics receives the voltage signal that key IG power supply (1) sends, and described voltage signal inputs to No. 3 pins of control signal generator (V901) after diode (D902) counnter attack after a resistance (R901) shunting filtering again; And by control signal generator (V901) again after filtering through the enable signal of No. 4 output pin stable outputs of control signal generator (V901);
The voltage signal that step 2, key IG power supply (1) send is an electric capacity (C930) charging after shunting filtering by a resistance (R901);
Step 3, the discharge circuit being made up of an electric capacity (C930) and No. three resistance (R902) are that control signal generator (V901) provides high level signal, make it continue normal work, the significant level time of control signal generator (V901) is by regulating the capacitance of an electric capacity (C930) and the resistance value of No. three resistance (R902) to control;
Step 4, when after elapsed time interval T, when No. 5 pins that automobile microcontroller (2) is control signal generator (V901) provide high level useful signal, No. 4 output pins of control signal generator (V901) can stop as its enable pin provides effective signal, and the power module of described vehicle electronics quits work;
Step 5, stop providing effective high level signal for No. 5 pins of control signal generator (V901) when automobile microcontroller (2), now No. 5 pins of control signal generator (V901) present low level, key IG power supply (1) can continue as control signal generator (V901) provides and stablizes high level useful signal, No. 4 output pin output high level useful signals that make control signal generator (V901), the power module of vehicle electronics is that vehicle electronics power module (3) provides power supply.
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| CN201410107904.4A CN103914015B (en) | 2014-03-21 | 2014-03-21 | The monostable control signal output noise trap of the power module of vehicle electronics and anti-interference method |
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| CN201410107904.4A CN103914015B (en) | 2014-03-21 | 2014-03-21 | The monostable control signal output noise trap of the power module of vehicle electronics and anti-interference method |
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| CN103914015B CN103914015B (en) | 2016-08-17 |
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Inventor after: Zheng Xiangbin Inventor after: Sun Zhiyuan Inventor after: Dai Yunlong Inventor after: Liu Jinze Inventor after: Wu Nannan Inventor after: Wang Dazhao Inventor after: Yang Dongdong Inventor before: Liu Zhongquan Inventor before: Yi Sichao Inventor before: Liu Jinze Inventor before: Wu Nannan Inventor before: Liu Honggang |
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