CN208705708U - A kind of side controls switch Acquisition Circuit and vehicle device - Google Patents
A kind of side controls switch Acquisition Circuit and vehicle device Download PDFInfo
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Abstract
The utility model provides a kind of side and controls switch Acquisition Circuit and vehicle device, the side's control switch Acquisition Circuit side of including: control switch acquisition module, processor, energy supply control module and detection module, control switch acquisition module in side's is electrically connected with processor, detection module and energy supply control module are electrically connected with processor, and energy supply control module is controlled switch acquisition module with side and is electrically connected；Control switch acquisition module in side's is for the side's of acquisition control switching signal and exports to processor, so that processor is according to side's control switching signal output control signal；The vehicle signal that processor is used to receive detection module detection exports the first power control signal to energy supply control module after judging exception；Energy supply control module is used to switch the on/off of acquisition module according to the first power control signal controlling party control.The purpose of this utility model is to provide a kind of sides to control switch Acquisition Circuit and vehicle device, to realize the safety of protection side's control switch Acquisition Circuit, prevents the damage of MCU.
Description
Technical field
The utility model relates to integrated circuit fields, control switch Acquisition Circuit and vehicle device in particular to a kind of side.
Background technique
Vehicle device function becomes increasingly complex diversification on automobile at present, only side's control switch module, side's control that vehicle device needs to acquire
Number of switches just reaches six, in addition also needs to carry out self diagnosis detection, general vehicle device needs to detect nine section voltages could be quasi-
Really switching information is controlled in effective acquisition side.
Usually side control switch module be usually directly connected to inside vehicle device, after being divided by internal pull-up resistor just directly by
MCU carries out AD acquisition.When being shorted to vehicle power supply or other output HIGH voltage routes of switch module mistake, this side are controlled in side
Control switch module is directly connected to MCU mode and easily leads to MCU damage.
Utility model content
The purpose of this utility model is to provide a kind of sides to control switch Acquisition Circuit and vehicle device, to realize protection side's control switch
The safety of Acquisition Circuit prevents the damage of MCU.
The utility model is realized in this way:
The utility model provides a kind of side's control switch Acquisition Circuit, and the side is controlled the control of the switch Acquisition Circuit side of including: and opened
Acquisition module, processor, energy supply control module and detection module are closed, the side controls switch acquisition module and is electrically connected with the processor
Connect, the detection module and the energy supply control module are electrically connected with the processor, the energy supply control module with it is described
Side's control switch acquisition module electrical connection；The side is controlled switch acquisition module for the side's of acquisition control switching signal and is exported to the place
Device is managed, so that the processor controls switching signal output control signal according to the side；The processor is for receiving the inspection
It surveys after the vehicle signal that module detects judges exception and exports the first power control signal to the energy supply control module；The power supply
Control module is used to control the on/off that the side controls switch acquisition module according to first power control signal.
Optionally, the processor exports second source control after being also used to judge exception according to side control switching signal
Signal processed is to the energy supply control module；The energy supply control module controls signal according to the second source and controls side's control
Switch the on/off of acquisition module.
Optionally, it further includes isolation module that the side, which controls switch Acquisition Circuit, and the isolation module is electrically connected to the side
Between control switch acquisition module and the processor, the energy supply control module is also electrically connected with the isolation module；It is described every
It is exported after anti-interference process is isolated from module for receiving side's control switching signal and carrying out isolation anti-interference process
Side's control switching signal.
Optionally, the processor, specifically for being sentenced according to side's control switching signal after anti-interference process is isolated
The second source control signal is exported after disconnected exception；The energy supply control module is also used to be controlled according to first power supply
Signal and/or second source control signal control the on/off of the isolation module.
Optionally, the processor exports the control according to side's control switching signal after anti-interference process is isolated and believes
Number.
Optionally, the isolation module includes first resistor, second resistance and voltage follower；The first resistor
Input terminal of the one end as the isolation module, the positive input of the other end of the first resistor and the voltage follower
Electrical connection, the negative input of the voltage follower are electrically connected with output end, one end of the second resistance and the voltage
The output end of follower is electrically connected, output end of the other end of the second resistance as the isolation module.The power supply control
Molding block includes power supply, voltage-stablizer, 3rd resistor, the first NPN type triode and the first PNP type triode；The voltage-stablizer
Power end and the emitter of the first PNP type triode with the power electric connection, the ground level of first PNP type triode with
The collector of first NPN type triode is electrically connected, and the 3rd resistor is electrically connected to the base of first PNP type triode
Between pole and emitter, the emitter of first NPN type triode is electrically connected with power ground, first NPN type triode
Base stage be electrically connected with the output end of the voltage-stablizer, the control terminal of the voltage-stablizer is electrically connected with the processor, described steady
The output end of depressor is electrically connected with the power end of the isolation module；The collector of first PNP type triode and the side
The power end of control switch acquisition module is connected.
Optionally, the energy supply control module further includes first capacitor, the second capacitor, the 4th resistance, the 5th resistance and
Six resistance；The 4th resistance both ends be electrically connected first PNP type triode base stage and three pole of the first NPN type
The collector of pipe, described 5th resistance one end are electrically connected with the ground level of first NPN type triode, and the 5th resistance is another
End is electrically connected with described first capacitor one end and is electrically connected with the output end of the voltage-stablizer, the first capacitor other end and institute
Power ground electrical connection is stated, the 6th resistance both ends are electrically connected between the ground level and emitter of first NPN type triode,
Second capacitor one end is electrically connected with the collector of first PNP type triode, the second capacitor other end with it is described
Power ground electrical connection.
Optionally, it includes pull-up resistor, third capacitor and switching circuit network that the side, which controls switch acquisition module, described to open
Powered-down road network includes multiple switch circuit, and the switching circuit is connected by switch and resistance and formed, multiple switching circuits
Parallel connection forms the switching circuit network, and one end of the pull-up resistor is electrically connected with the energy supply control module, the pull-up
The other end of resistance is electrically connected with third capacitor one end and switching circuit network one end respectively, the switching circuit net
The network other end and the third capacitor other end are electrically connected with power ground.
The utility model also provides a kind of vehicle device, and the vehicle device includes that the side controls switch Acquisition Circuit.
Compared with the prior art, the utility model has the following beneficial effects: a kind of side provided by the utility model controls switch
Acquisition Circuit and vehicle device prevent the damage of MCU to realize the safety of protection side's control switch Acquisition Circuit.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.Therefore, below to attached
The detailed description of the embodiments of the present invention provided in figure is not intended to limit the range of claimed invention,
But it is merely representative of the selected embodiment of the utility model.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, belongs to the model of the utility model protection
It encloses.
Fig. 1 shows a kind of side provided by the utility model and controls switch Acquisition Circuit structural block diagram；
Fig. 2 shows another kind sides provided by the utility model to control switch Acquisition Circuit structural block diagram；
Fig. 3 shows side's control switch Acquisition Circuit structural block diagram that one kind provided by the utility model individually controls；
Fig. 4 shows a kind of isolation module circuit structure diagram provided by the utility model；
Fig. 5 shows a kind of energy supply control module circuit structure diagram provided by the utility model；
Fig. 6 shows another energy supply control module circuit structure diagram provided by the utility model；
Fig. 7 shows a kind of side provided by the utility model and controls switch Acquisition Circuit block diagram；
Fig. 8 shows a kind of side provided by the utility model and controls switch acquisition module circuit structure diagram.
Primary symbols explanation:
The side's 100- control switch Acquisition Circuit；The side's 110- control switch acquisition module；120- detection module；121- vehicle signal is adopted
Collect module；122- vehicle signal detection module；130- energy supply control module；The first energy supply control module of 131-；The second electricity of 132-
Source control module；140- processor；150- isolation module；
R1- first resistor；R2- second resistance；R3- 3rd resistor；The 4th resistance of R4-；The 5th resistance of R5-；The 6th electricity of R6-
Resistance；R7- pull-up resistor；R8-R13- resistance；C1- first capacitor；The second capacitor of C2-；C3- third capacitor；GME- voltage follow
Device；The first PNP type triode of Q1-；The first NPN type triode of Q2-；K1~K6- switch；VCC- power supply；GND- power ground；VCC_
EN power control signal；The first output voltage of VCC_OUT_1-；The second output voltage of VCC_OUT_2-；"+"-voltage follower
Positive input；"-"-voltage follower reverse input end.
Specific embodiment
Below in conjunction with attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be come with a variety of different configurations
Arrangement and design.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below
The range of claimed invention, but it is merely representative of the selected embodiment of the utility model.Based on the utility model
Embodiment, those skilled in the art's every other embodiment obtained without making creative work, all
Belong to the range of the utility model protection.
Referring to Fig. 1, the utility model provides a kind of embodiment of side's control switch Acquisition Circuit, wherein side's control switch acquires
100 side of generally including of circuit control switch acquisition module 110 and processor 140, side's control switch acquisition module 110 and processor 140
Electrical connection, control switch acquisition module 110 in side's is for the side's of acquisition control switching signal and exports to processor 140, so that processor 140
According to side's control switching signal output control signal.
Further, referring to Fig.1, the utility model provides a kind of possible improved procedure, specifically, side's control switch acquisition
Circuit 100 further includes detection module 120 and energy supply control module 130, side's control switch acquisition module 110,120 and of detection module
Energy supply control module 130 is electrically connected with processor 140, and energy supply control module 130 controls switch acquisition module 110 with side and is electrically connected
It connects.
Control switch acquisition module 110 in side's is for the side of acquisition control switching signal and output is to processor 140, and processor 140
According to side's control switching signal output control signal.The vehicle signal judgement that processor 140 is used to receive the detection of detection module 120 is abnormal
After export the first power control signal to energy supply control module 130, energy supply control module 130, which is used to be controlled according to the first power supply, to be believed
The on/off of number controlling party control switch acquisition module 110.
In the present embodiment, switching signal is controlled in side's control switch 110 side of collecting of acquisition module, and it is vapour that switching signal is controlled in side
The switching signal that vehicle steering wheel key generates, general side's control switch acquisition module 110 judge key by collection voltages height
The opening and closing of function.Control switch acquisition module 110 in side's is an Acquisition Circuit or signal input circuit, and Acquisition Circuit is usually
Exported after carrying out one of means such as anti-interference, amplification, pressure stabilizing, filtering or a variety of processing to input signal, to original signal into
Row pre-processes and guarantees the Information invariability of original signal.It is inputted after side's control switch 110 side of collecting of acquisition module control switching signal
Processor, for processor according to side's control switching signal output control signal, control signal is usually the signal controlled vehicle,
Controlling signal includes but is not limited to control car light, control interior air-conditioning etc..For example, 140 side of receiving of processor control switch acquisition
Side's control switching signal that the expression left steering lamp that module 110 acquires is opened, then processor 140 exports control signal, execution module
It receives this signal and opens left steering lamp.The general built-in AD sampler of processor 140 is AD converted signal.The utility model
In order to solve the technical issues of proposed, it is provided with detection module 120 and energy supply control module 130, specifically, processor 140
It is also used to receive the vehicle signal of the detection of detection module 120, and exports the first power control signal to energy supply control module 130,
Energy supply control module 130 switchs the on/off of acquisition module 110 according to the first power control signal controlling party control.Detection module
120 for detecting vehicle signal, and vehicle signal inputs detection module 120 in real time, and vehicle signal includes but is not limited to switch level
Two class signal of signal and data signal bus, such as car key switching signal, car door signal belong to switch level signal；Speed,
The signals such as engine condition, air-conditioning state belong to data signal bus.Detection module 120 is for detecting vehicle signal but being not limited to
Detect the states such as car key switch, each state of engine, work condition state, front and back wheel state, front and back lamp.Vehicle signal also wraps
Vehicle circuitry signal is included, vehicle circuitry signal can react vehicle current state, if in normal operating conditions or abnormal shape
State.120 real-time detection of detection module obtains whole vehicle state signal, will test result input processor 140, processor 140 and inspection
CAN bus or I can be passed through by surveying between module 1202C bus mode carries out transmission vehicle signal, it is possible to use processor 140 draws
Foot is multiplexed function and transmits vehicle signal.Testing result can be a certain particular state parameter value of the detection of detection module 120, can also
To be a certain status code, processor 140 judges whether exception according to testing result and is handled, and exports the first power supply control letter
Number to energy supply control module 130, energy supply control module 130 is according to the first power control signal output voltage.For example, detection module
120 detect that engine is in close state, and will test result input processor 140, and processor 140 exports closing side's control switch
First power control signal of acquisition module 110, energy supply control module 130 control power supply after receiving first power control signal
It closes, then side's control switch acquisition module 110 and power supply disconnect.Energy supply control module 130 is set, is detected by detection module 120
Vehicle signal effective controlling party control switch acquisition module 110 and on/off, the side of being effectively protected control switchs Acquisition Circuit 100
Safety.
On the basis of controlling the embodiment of switch Acquisition Circuit 100 with top, the utility model embodiment also provides one kind
It controls 110 exception of switch acquisition module according to judgement side to carry out controlling possible implementation, specifically, processor 140 is also used to
Output second source controls signal to energy supply control module 130, energy supply control module after judging exception according to side's control switching signal
130 control the on/off of signal controlling party control switch acquisition module 110 according to second source.
In this implementation, the vehicle signal that processor 140 not only receives the detection of detection module 120 carries out abnormal judgement
After export the first power control signal to energy supply control module 130, also with recipient control switching signal carries out it is defeated after exception judgement
Second source controls signal to energy supply control module 130 out.First power control signal and second source control signal are by handling
Device 140 exports, and can also be output asynchronously with synchronism output.In addition, it is contemplated that processor 140 by first sentencing simultaneously
Whether out-put supply controls signal VCC_EN, power control signal VCC_EN after exception for disconnected vehicle signal and side's control switching signal
Any one in signal, or combination can be controlled for the first power control signal, second source.Need exist for the first electricity of explanation
Source control signal or second source control signal can be characterized using identical or different electric signal, for example, first electricity
Source controls signal and second source control signal is all characterized by low level；Or, first power control signal and second source
Signal is controlled all to characterize by high level；Or, one in first power control signal and second source control signal passes through
High level characterization, and another is characterized by low level.Herein for the first power control signal of characterization or second source control
The electrical signal form of signal not limits.First power control signal can control power supply with second source control signal and be connected to
Or disconnect, processor 140 is either controlled switching signal to vehicle signal or side and is judged extremely, as long as there is exception in one of them,
Energy supply control module 130 receives corresponding first power control signal or second source control signal just will disconnect power supply.
For example, it is short-circuit signal or open circuit letter that switching signal is controlled in 140 side of detecting of processor when side's control switch acquisition module 110 is abnormal
Number or when side's control stuck signal of key, energy supply control module 130, which receives second source control signal, just will disconnect power supply, effectively
The safety of ground protection side control switch Acquisition Circuit 100, prevents the damage of MCU.
Optionally, controlling switching signal due to the received side of processor 140 may be by the interference of outer signals, in order to improve
Anti-interference ability, in conjunction with above-described embodiment, the possibility that a kind of side's control switch Acquisition Circuit with isolation module 150 is given below is real
Existing mode, specifically, referring to fig. 2, control switch Acquisition Circuit 100 in side's further includes isolation module 150, and isolation module 150 is electrically connected
In just controlling between switch acquisition module 110 and processor 140, energy supply control module 130 is also electrically connected with isolation module 150.Every
Switching signal also is controlled with other side from module 150 and carries out isolation anti-interference process, and side control of the output after anti-interference process is isolated is opened
OFF signal.
In this implementation, isolation module is inputted after side's control switch 110 side of collecting of acquisition module control switching signal
150, the realizations such as metal-oxide-semiconductor or follower or filter isolation anti-interference process, letter after treatment can be used in isolation module 150
It number can be utmostly close to original signal.Processor 140 is also used to receive the vehicle signal of detection module detection and side's control is opened
OFF signal, and out-put supply control signal VCC_EN, to energy supply control module, energy supply control module 130 is according to power control signal
VCC_EN controlling party control switchs the on/off of acquisition module 110 and isolation module 150, such as 130 basis of energy supply control module
The power supply of the control of the power control signal side of simultaneously switching off VCC_EN switch acquisition module 110 and isolation module 150；Or power supply controls mould
Block 130 controls the power supply of switch acquisition module 110 and the electricity that is connected to isolation module 150 according to the power control signal connection side VCC_EN
Source.The power supply control of switch Acquisition Circuit 100 is controlled by increasing isolation module 150 and other side, the side's of being effectively protected control switch is adopted
The safety of collector 100 prevents the damage of MCU.
Optionally, on the basis of isolation module 150 carries out isolation anti-interference process, processor 140 is also used to according to warp
Side's control switching signal after isolation anti-interference process judges output second source control signal after exception.Power supply control is given below
130 3 kinds of control modes of module:
Mode one
Energy supply control module 130 is also used to control the on/off of isolation module 150 according to the first power control signal.
In this implementation, energy supply control module 130 can be switched according to the first power control signal controlling party control and be adopted
Collect the power supply while on-off of module 110 and isolation module 150.For example, processor 140 judges exception according to vehicle signal, according to
Control switching signal judgement in side's is normal, exports the first power control signal at this time, and the first power control signal controlling party control switch is adopted
The power supply for collecting module 110 disconnects and the power supply of control isolation module 150 disconnects.
Mode two
Energy supply control module 130 is also used to control the on/off of signal control isolation module 150 according to second source.
In this implementation, energy supply control module 130 can control signal controlling party control switch according to second source and adopt
Collect the power supply while on-off of module 110 and isolation module 150.For example, processor 140 is normal according to the judgement of vehicle signal, according to
Control switching signal judgement in side's is abnormal, exports second source at this time and controls signal, second source control signal controlling party control switch is adopted
The power supply for collecting module 110 disconnects and the power supply of control isolation module 150 disconnects.
Mode three
Energy supply control module 130 is also used to according to the first power control signal and second source control signal control isolation
The on/off of module 150.
In this implementation, energy supply control module 130 can be controlled according to the first power control signal and second source
Signal controlling party control switchs the power supply while on-off of acquisition module 110 and isolation module 150.For example, processor 140 is according to vehicle
Signal judgement is abnormal, exports the first power control signal, abnormal according to side's control switching signal judgement, output second source control letter
Number, the power supply of the first power control signal and second source control signal controlling party control switch acquisition module 110 disconnects and control
The power supply of isolation module 150 disconnects.
In three kinds of modes, isolation module is inputted after side's control switch 110 side of collecting of acquisition module control switching signal
150, the realization such as metal-oxide-semiconductor or follower or filter can be used in isolation module 150.It controls and switchs for example, by using voltage follower other side
Acquisition module 110 and processor 140 are isolated, the input impedance height of voltage follower, the low feature of output impedance, when input hinders
When anti-very high, it is equivalent to open a way to front stage circuits；When output impedance is very low, a constant pressure is equivalent to late-class circuit
Source, i.e. output voltage be not by late-class circuit impedance influences.Voltage follower is equivalent to open circuit to front stage circuits, and output voltage is again not
By rear class impedance influences, there is jamproof ability.150 side of effectively increasing of isolation module is set and controls switch Acquisition Circuit 100
Anti-interference ability.Processor 140 is also used to receive the vehicle signal of the detection of detection module 120 and after anti-interference process is isolated
Side's control switching signal, side's control switching signal after anti-interference process is isolated is more acurrate, and avoids external interference.Processor
140 out-put supplies control signal VCC_EN to energy supply control module 130, and energy supply control module 130 is according to power control signal
The on/off of VCC_EN controlling party control switch acquisition module 110 and isolation module 150.Switch Acquisition Circuit is controlled by other side
100 power supply control, the safety of the side's of being effectively protected control switch Acquisition Circuit 100, prevents the damage of MCU.
Referring to shown in Fig. 2, the abnormal implementation base controlled of switch acquisition module 110 is being controlled above according to judgement side
On plinth, the utility model also provides a kind of implementation that jamproof isolation module circuit is isolated.
Optionally, on the basis of isolation module 150 carries out isolation anti-interference process, processor 140 can also be according to warp
Side's control switching signal output control signal after anti-interference process is isolated.
150 side of effectively increasing of isolation module is set and controls switch 100 anti-interference ability of Acquisition Circuit, isolation module 150 is right
Side's control switching signal carries out anti-interference process, reduces the interference that interference signal judges processor 140 extremely；It also can be reduced simultaneously
The signal interference of square control switch Acquisition Circuit 100.Control signal is usually the signal controlled vehicle, controls signal packet
Include but be not limited to control car light, control interior air-conditioning etc..For example, 140 side of receiving of processor control switch acquisition module acquisition
The square control switching signal that left steering lamp is opened, then the output of processor 140 control signal, execution module receive this signal and open a left side
Turn signal.This programme other side is controlled switching signal and is handled, and the identification error rate that 140 other side of processor controls switching signal is reduced,
Guarantee that processor 140 can export the control signal of high-accuracy.
On the basis of the embodiment of side's control switch Acquisition Circuit 100 above with isolation module 150, the utility model is mentioned
For a kind of implementation of side's control switch Acquisition Circuit 100 of two energy supply control modules 130, with reference to Fig. 3, specifically, power supply
Control module 130 includes the first power control unit 131 and second source control unit 132, the first power control unit 131 with
Control switch acquisition module 110 in side's is electrically connected, and second source control unit 132 is electrically connected with isolation module 150, and processor 140
After judging exception according to the vehicle signal that detection module 120 detects, the first power control signal to the first power control unit is exported
131 and second source control unit 132, after processor 140 judge exception also according to side's control switching signal, output second source control
Signal processed to the first power control unit 131 and second source control unit 132, the first power control unit 131 is used for basis
The on/off of first power control signal and second source control signal controlling party control switch acquisition module 110；Second source
Control unit 132 is used for logical according to the power supply of the first power control signal and second source control signal control isolation module 150
It is disconnected.
In this implementation, processor 140 exports the first power control signal to the first power control unit 131 and the
Two power control units 132, the first power control unit 131 switch acquisition module according to the first power control signal controlling party control
110 on/off；Second source control unit 132 controls the on-off of isolation module 150 according to the first power control signal；Place
Reason device 140 can also export second source control signal to the first power control unit 131 and second source control unit 132,
First power control unit 131 controls the on/off of signal controlling party control switch acquisition module 110 according to second source；Second
Power control unit 132 controls the on-off of signal control isolation module 150 according to second source.For example, being controlled in the first power supply
Under signal control, the power supply of 131 side of disconnection of the first power control unit control switch acquisition module 110, second source control unit
132 disconnect the power supply of isolation module 150；Or under second source control signal control, the first power control unit 131 is disconnected
The power supply of side's control switch acquisition module 110, second source control unit 132 disconnect the power supply of isolation module 150.First power supply control
Unit 131 processed and second source control unit 132 are controlled signal by the out-put supply of processor 140 while being controlled, specific to control
Strategy can be set according to predefined or setting logic judgment.The first power control unit 131 and that this implementation provides
Two power control units 132 control the electricity of isolation module 150 and side's control switch acquisition module 110 by power control signal simultaneously
Source on-off, the safety of the side's of being effectively protected control switch Acquisition Circuit 110.
Referring to fig. 4, the utility model also provides a kind of implementation of isolation module circuit, specifically, isolation module 150
Including first resistor R1, second resistance R2 and voltage follower GME, one end of first resistor R1 is as the defeated of isolation module 150
Enter end, the other end of first resistor R1 and the positive input of voltage follower GME+be electrically connected, the output of voltage follower GME
End is electrically connected with reverse input end-, and one end of second resistance R2 is electrically connected with the output end of voltage follower GME, second resistance
Output end of the other end of R2 as isolation module 150.
The connection method of voltage follower GME is that the output end of voltage follower GME is electrically connected with reverse input end, signal
It is inputted from positive input.Voltage follower GME has input impedance height, the low feature of output impedance, when input impedance is very high, just
It is equivalent to and opens a way to front stage circuits；When output impedance is very low, a constant pressure source, i.e. output voltage are equivalent to late-class circuit
Not by late-class circuit impedance influences, voltage follower GME has jamproof ability.In this implementation, in voltage follower
Positive input one build-out resistor of series connection of GME, is capable of increasing the input impedance of voltage follower GME, effectively prevent inputting
Overtension damages circuit, and build-out resistor is arranged in the output end of voltage follower GME, can reduce arithmetic unit mould
The input current of block further decreases the risk of arithmetic unit damage.
The utility model provides a kind of implementation of energy supply control module circuit, and specifically, energy supply control module 130 wraps
Power supply VCC, first order control module and second level control module are included, power supply VCC, first order control module and the second level control mould
Block is sequentially connected electrically, and the input terminal of first order control module is electrically connected with processor 140, the output end of first order control module with
The power end of isolation module 150 is electrically connected, the output end of second level control module and the power end of side's control switch acquisition module 110
Electrical connection, first order control module and second level control module are used to the on-off of control power supply VCC, second level control module by
The control of first order control module and the on-off of first order control module are consistent.
In this implementation, energy supply control module 130 divides for two-step evolution, first order control module control isolation module
150 on/off, second level control module controlling party control switch the on/off of acquisition module 110, since the second level controls
Module by first order control module control and keep identical on-off, therefore, processor 140 export the first power control signal
Or second source control signal is able to achieve individual signals while controlling isolation module 150 and side's control switch acquisition module 110
On-off.For example, the first order makes the voltage-stablizer that can control using band, the second level uses metal-oxide-semiconductor, and processor 140 exports a power supply
Control signal VCC_EN (whether the first power control signal or second source control signal) to the enable end of voltage-stablizer, just
The output that can control voltage-stablizer controls the on-off of second level control module metal-oxide-semiconductor by voltage-stablizer output, to realize again
Two-stage is with state on-off, and there are the small time differences for the on-off of certain first order control module and second level control module, probably
In Millisecond, by first disconnecting the power supply of isolation module, then the power supply of Acquisition Circuit is disconnected, it is therefore prevented that Acquisition Circuit is possible residual
Remaining voltage damages MCU, be otherwise isolated from module 150 itself for side control switch Acquisition Circuit 100 be isolated or anti-interference place
Reason can fast implement physics disconnection after generally using follower or metal-oxide-semiconductor, isolation module 150 to disconnect power supply, to protect
The safety of circuit.
Referring to Fig. 5, the utility model provides a kind of implementation of energy supply control module circuit, specifically, power supply control
Module 130 includes power supply VCC, voltage-stablizer U1,3rd resistor R3, the first NPN type triode Q2 and the first PNP type triode Q1,
The emitter of the power end of voltage-stablizer U1 and the first PNP type triode Q1 are electrically connected with power supply VCC, the first PNP type triode
The ground level of Q1 is electrically connected with the collector of the first NPN type triode Q2, and 3rd resistor R3 is electrically connected to the first PNP type triode Q1
Base stage and emitter between, the emitter of the first NPN type triode Q2 is electrically connected with power ground GND, the first NPN type triode
Q2 is electrically connected with the output end of voltage-stablizer U1, and the control terminal of voltage-stablizer U1 is electrically connected with processor 140, the output end of voltage-stablizer U1
It is electrically connected with the power end of isolation module 150；The collector of first PNP type triode Q1 and side's control switch acquisition module 110
Power end is connected.
In this implementation, power control signal VCC_EN of 130 output voltage of energy supply control module by processor 140
Control, specifically, when power control signal VCC_EN is high level, voltage-stablizer U1 normally exports the first output voltage VCC_
OUT_1, the first output voltage VCC_OUT_1 power to isolation module 150；Meanwhile first output voltage VCC_OUT_1 be high electricity
Ordinary telegram pressure, at the first output voltage VCC_OUT_1, the first NPN type triode Q2 is in the conductive state, three pole of the first positive-negative-positive
The base stage of pipe Q1 is pulled low, and the emitter of the first PNP type triode Q1 is electrically connected with power supply VCC, therefore the first PNP type triode
Q1 enters on state, and the collector of the first PNP type triode Q1 exports the second output voltage, that is, VCC_OUT_2, the second output
Voltage VCC_OUT_2 powers to side's control switch acquisition module 110；When power control signal VCC_EN is low level, voltage-stablizer
U1 is equivalent to 150 unpowered power supply of isolation module without output；Voltage-stablizer U1 is without output, and the first NPN type triode Q2 is at this time
Off state, is equivalent to high resistant, and 3rd resistor R3 and the first NPN type triode Q2 are divided so that the first PNP type triode Q1
Base stage is high level state, and the first PNP type triode Q1 enters off state, the collector of the first PNP type triode Q1 at this time
Output voltage is almost nil, therefore side's control switchs the also unpowered power supply of acquisition module 110.It is effectively controlled by power control signal
The on/off of side's control switch acquisition module 110 and isolation module 150, the peace of the side's of being effectively protected control switch Acquisition Circuit 100
Entirely, the damage of MCU is prevented.
Referring to Fig. 6, on the basis of the implementation of figure 5 above energy supply control module circuit, the utility model provides one kind
The implementation of energy supply control module circuit 100, specifically, energy supply control module 130 further include first capacitor C1, the second capacitor
C2, the 4th resistance R4, the 5th resistance R5 and the 6th resistance R6, the 4th resistance R4 are electrically connected the first PNP type triode Q1's
The collector of base stage and the first NPN type triode Q2, the 5th one end resistance R5 and the ground level of the first NPN type triode Q2 are electrically connected
It connects, the other end is electrically connected with the one end first capacitor C1 and is electrically connected with the output end of voltage-stablizer U1, another termination of first capacitor C1
Ground, the 6th resistance R6 are electrically connected between the ground level and emitter of the first NPN type triode Q2, second one end capacitor C2 and first
The collector of PNP type triode Q1 is electrically connected, second capacitor C2 other end ground connection.
In this implementation, 130 output voltage of energy supply control module is controlled by the power control signal of processor 140
VCC_EN, when power control signal VCC_EN is high level, it is height that voltage-stablizer, which exports the first output voltage VCC_OUT_1, the
One output voltage VCC_OUT_1 powers to isolation module 150.Simultaneously under the action of the first output voltage VCC_OUT_1, first
NPN type triode Q2 is in the conductive state, and the base stage of the first PNP type triode Q1 is pulled low, the hair of the first PNP type triode Q1
Emitter-base bandgap grading is electrically connected with power supply VCC, therefore the first PNP type triode Q1 enters on state, the current collection of the first PNP type triode Q1
Pole exports the second output voltage VCC_OUT_2 and powers to side's control switch acquisition module 110；When power control signal VCC_EN is low
When level, voltage-stablizer U1 is equivalent to disconnection without output, 150 unpowered of isolation module；Meanwhile voltage-stablizer U1 is without output, the first NPN
Type triode Q2 is in off state, is equivalent to high resistant, 3rd resistor R3 and the first NPN type triode Q2 partial pressure are so that first
The base stage of PNP type triode Q1 is high level state, and the first PNP type triode Q1 enters off state, the first positive-negative-positive three at this time
The collector output voltage of pole pipe Q1 is almost nil, and control switch 110 unpowered of acquisition module in the side's of being equivalent to is in an off state.
4th resistance R4 effectively reduces the collector current for flowing through the first NPN type triode Q2, prevent it is breakdown, while for preventing
Signal interference the first PNP type triode Q1 base stage.First capacitor C1 and the 5th resistance R5 forms RC filter circuit, effectively prevents
The interference of input signal, the 6th resistance R6 are used to prevent the interference signal of ground connection.First capacitor C1 setting is in output end, effectively surely
Determine output voltage.The energy supply control module 130 that this implementation provides passes through the effective controlling party control of power control signal VCC_EN
The on/off of acquisition module 110 and isolation module 150 is switched, the safety of the side's of being effectively protected control switch Acquisition Circuit 100 is prevented
Only MCU is damaged, and 130 anti-interference ability of energy supply control module that this implementation provides is stronger, is exported more stable.
Referring to Fig. 7, the utility model provides a kind of implementation of detection module 120, and specifically, detection module 120 is also
Including vehicle signal acquisition module 121 and vehicle signal detection module 122, vehicle signal acquisition module 121 and vehicle signal are examined
It surveys module 122 to be electrically connected, the vehicle signal of 122 real-time detection vehicle signal acquisition module 121 of vehicle signal detection module acquisition.
In this implementation, whole vehicle state signal includes but is not limited to each state of engine, work condition state, front and back vehicle
Wheel state, front and back lamp state etc., vehicle signal acquisition module 121 are a signal acquisition module, and acquisition module includes to signal
Driving, amplification, filtering, impedance matching etc. handle one or more processing, and source signal is handled matched can input for system
Signal.Vehicle signal detection module 122 is detection circuit, can detect state value or low and high level of a certain input signal etc., whole
Vehicle signal acquisition module 121 inputs vehicle signal detection module 122 after acquiring vehicle signal in real time, and processor 140 can be real
When from vehicle signal detection module 122 obtain whole vehicle state signal or code.Processor 140 and vehicle signal detection module 122
Between can pass through CAN bus or I2C bus mode carries out transmission vehicle signal, it is possible to use the pin multiplexing function of processor 140
Vehicle signal can be transmitted.Processor 140 generates power control signal VCC_EN according to side's control switching signal, and controlling party control switch is adopted
Collect the on/off of module 110 and isolation module 150, the safety of the side's of being effectively protected control switch Acquisition Circuit 100.
The utility model provides a kind of realization of detection module 120 on the basis of the implementation of the above detection module 120
Mode, specifically, detection module 120 further include level adjustment module, and level adjustment module is electrically connected to vehicle signal acquisition mould
Between block 121 and vehicle signal detection module 122, level adjustment module is used to adjust the acquisition of vehicle signal acquisition module 121
The level of vehicle signal.
In this implementation, it is also provided between vehicle signal acquisition module 121 and vehicle signal detection module 122
Level adjusts module, and generally for most effective signal is obtained, level may be mismatched between each circuit module, such as vehicle
Signal acquisition module uses Transistor-Transistor Logic level, and vehicle signal detection module uses CMOS level, then needs that level tune is arranged between the two
Mould preparation block.CAN bus or I can be passed through between processor 140 and vehicle signal detection module 1222C bus mode transmit whole
Vehicle signal, it is possible to use the pin multiplexing function of processor 140 transmits vehicle signal.Detection module provided by the utility model
120 can be applicable in varying level, and detection module 120 can be adapted to more circuit detection vehicle signals.
Referring to Fig. 8, the utility model provides a kind of implementation of side's control switch acquisition module 110, and specifically, side's control is opened
Closing acquisition module 110 includes pull-up resistor R7, third capacitor C3 and switching circuit network, switching circuit network (R8~R13 and K1
~K6 composition switching circuit network) include multiple switch circuit, switch and switch resistance series connection (R8 connects with K1, R8, R9 and
K2 series connection, R8, R9, R10 connect with K3, and R8, R9, R10, R11 connect with K4, and R8, R9, R10, R11, R12 connect with K5, R8,
R9, R10, R11, R12, R13 connect with K6) switching circuit is formed, multiple switch circuit in parallel forms switching circuit network, pull-up
One end of resistance R7 is electrically connected with energy supply control module 130, the other end of pull-up resistor R7 respectively with third one end capacitor C3 and
The electrical connection of switching circuit network one end, the switching circuit network other end and the third capacitor C3 other end are grounded.
In this implementation, pull-up resistor R7 is the collection voltages divider resistance of side's control switch acquisition module 110, is passed through
Switching circuit network, user generate corresponding side's control switching signal, different switch keys or switch key when pressing switch key
The resistance sizes that generate of combination it is different, side's control switch 110 side of detection of acquisition module control switching signal, by isolation module 150
Processor 140 is finally entered, 140 other side of processor is controlled switching signal and parsed, so that switching information is controlled in the side of acquisition.Third electricity
Hold the signal interference that C3 can be effectively isolated ground connection.The matching of pull-up resistor R7 can be set according to switching circuit network, for example,
If in switching circuit network between whole network resistor tracks being the Ω of 75 Ω~6720, the voltage value for pulling up voltage source is 3.3V, because
This pull-up divider resistance resistance value can choose 560 Ω.Match reasonable pull-up resistor R7, pull-up resistor R7 and switching circuit network
Resistance value distribution section is more evenly reasonable, enhances anti-interference ability.
The utility model provides a kind of implementation of processor 140, and specifically, processor 140 includes AD conversion module
And computing module, the input signal of processor 140 input computing module processing after AD conversion module is handled.
Processor is integrated after AD conversion module can carry out analog-to-digital conversion to input signal and is handled, compared in external electrical
AD conversion module is arranged in road, and processor, which integrates AD conversion module, has the interference of less peripheral circuit and smaller volume.
The utility model also provides a kind of embodiment of vehicle device, and specifically, vehicle device includes that side's control switchs Acquisition Circuit 100.
In the present embodiment, vehicle device include side control switch Acquisition Circuit 100, vehicle device can with control circuit and display screen,
Switching signal is controlled in control switch 100 side of acquisition of Acquisition Circuit, side, and control circuit executes control according to side's control switching signal.Such as detect
Side's control switching signal that front fog lamp lights, control front fog lamp light.Isolation module is arranged in side's control switch Acquisition Circuit 100 of vehicle device
150 sides of effectively increasing control switch 100 anti-interference ability of Acquisition Circuit；Energy supply control module 130 is set, detection module is passed through
The on/off of the vehicle signal of 120 detections effective controlling party control switch acquisition module 110 and isolation module 150, is effectively protected
The safety of shield side's control switch Acquisition Circuit 100.
To sum up, the utility model provides a kind of side and controls switch Acquisition Circuit and vehicle device, and control switch Acquisition Circuit in side's includes
Side's control switch acquisition module, isolation module, energy supply control module, processor and detection module, the control of the isolation module side of being electrically connected to
For being isolated interference signal between the two between switch acquisition module and processor, processor respectively with detection module and power supply
Control module electrical connection, energy supply control module controls switch acquisition module with side respectively, isolation module is electrically connected, and processor receives inspection
The vehicle signal of module detection and out-put supply control signal are surveyed to energy supply control module, energy supply control module is controlled according to power supply
The on/off of signal controlling party control switch acquisition module and isolation module.A kind of side provided by the utility model controls switch acquisition
Circuit and vehicle device realize the safety of protection side's control switch Acquisition Circuit, prevent the damage of MCU, and the side's of also improving control switch is adopted
Collector anti-interference ability.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "inner", "outside" etc.
The orientation or positional relationship of instruction be based on the orientation or positional relationship shown in the drawings or the utility model product use when
The orientation or positional relationship usually put, is merely for convenience of describing the present invention and simplifying the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the utility model.The above descriptions are merely preferred embodiments of the present invention, and it is practical new to be not limited to this
Type, for those skilled in the art, the present invention may have various modifications and changes.All essences in the utility model
Mind and principle within, any modification, equivalent replacement, improvement and so on, should be included in the protection scope of the utility model it
It is interior.
Claims (10)
1. a kind of side controls switch Acquisition Circuit, which is characterized in that control switch acquisition module, processor, power supply including side and control mould
Block and detection module, the side are controlled switch acquisition module and are electrically connected with the processor, the detection module and the power supply control
Molding block is electrically connected with the processor, and the energy supply control module is controlled switch acquisition module with the side and is electrically connected；
The side is controlled switch acquisition module for the side's of acquisition control switching signal and is exported to the processor, so that the processor
Switching signal output control signal is controlled according to the side；
The processor is for after judging exception according to the vehicle signal that the detection module detects, output the first power supply control to be believed
Number to the energy supply control module；
The energy supply control module is used to control the electricity that the side controls switch acquisition module according to first power control signal
Source on-off.
2. control switch Acquisition Circuit in side's as described in claim 1, which is characterized in that the processor is also used to according to
After side's control switching signal judges exception, output second source controls signal to the energy supply control module；
The energy supply control module is logical according to the power supply that second source control signal controls side's control switch acquisition module
It is disconnected.
3. control switch Acquisition Circuit in side's as claimed in claim 2, which is characterized in that the side controls switch Acquisition Circuit and further includes
Isolation module, the isolation module are electrically connected to the side and control between switch acquisition module and the processor, the power supply control
Molding block is also electrically connected with the isolation module；
The isolation module, for receiving side's control switching signal and carrying out isolation anti-interference process, output is isolated anti-dry
Side's control switching signal of disturbing that treated.
4. control switch Acquisition Circuit in side's as claimed in claim 3, which is characterized in that
The processor, specifically for being exported after judging exception according to side's control switching signal after anti-interference process is isolated
The second source controls signal；
The energy supply control module is also used to according to first power control signal and/or second source control signal
Control the on/off of the isolation module.
5. control switch Acquisition Circuit in side's as claimed in claim 3, which is characterized in that
The processor, specifically for exporting the control signal according to side's control switching signal after anti-interference process is isolated.
6. side's control switch Acquisition Circuit as claimed in claim 3, which is characterized in that the isolation module include first resistor,
Second resistance and voltage follower；
Input terminal of the one end of the first resistor as the isolation module, the other end of the first resistor and the voltage
The positive input of follower is electrically connected, and the negative input of the voltage follower is electrically connected with output end, second electricity
One end of resistance is electrically connected with the output end of the voltage follower, and the other end of the second resistance is as the isolation module
Output end.
7. side's control switch Acquisition Circuit as claimed in claim 6, which is characterized in that the energy supply control module include power supply,
Voltage-stablizer, 3rd resistor, the first NPN type triode and the first PNP type triode；
The power end of the voltage-stablizer and the emitter of the first PNP type triode with the power electric connection, the first PNP
The ground level of type triode is electrically connected with the collector of first NPN type triode, and the 3rd resistor is electrically connected to described
Between the base stage and emitter of one PNP type triode, the emitter of first NPN type triode is electrically connected with power ground, institute
The base stage for stating the first NPN type triode is electrically connected with the output end of the voltage-stablizer, the control terminal of the voltage-stablizer and the place
Device electrical connection is managed, the output end of the voltage-stablizer is electrically connected with the power end of the isolation module；First PNP type triode
Collector and the side control the power end of switch acquisition module and be connected.
8. control switch Acquisition Circuit in side's as claimed in claim 7, which is characterized in that the energy supply control module further includes first
Capacitor, the second capacitor, the 4th resistance, the 5th resistance and the 6th resistance；
The 4th resistance both ends are electrically connected the base stage and first NPN type triode of first PNP type triode
Collector, described 5th resistance one end is electrically connected with the ground level of first NPN type triode, the 5th resistance other end
Be electrically connected with described first capacitor one end and be electrically connected with the output end of the voltage-stablizer, the first capacitor other end with it is described
Power ground electrical connection, the 6th resistance both ends are electrically connected between the ground level and emitter of first NPN type triode, institute
It states second capacitor one end to be electrically connected with the collector of first PNP type triode, the second capacitor other end and the electricity
Source it is electrically connected.
9. control switch Acquisition Circuit in side's as claimed in claim 8, which is characterized in that it includes upper that the side, which controls switch acquisition module,
Pull-up resistor, third capacitor and switching circuit network, the switching circuit network include multiple switch circuit, the switching circuit by
Switch and resistance connect to be formed, and multiple switching circuit parallel connections form the switching circuit network, and the one of the pull-up resistor
End is electrically connected with the energy supply control module, the other end of the pull-up resistor respectively with third capacitor one end and described open
Powered-down road network one end electrical connection, the switching circuit network other end and the third capacitor other end are electrically connected with power ground
It connects.
10. a kind of vehicle device, which is characterized in that the vehicle device includes controlling switch such as the side of claim 1-9 any one to adopt
Collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821778352.XU CN208705708U (en) | 2018-10-30 | 2018-10-30 | A kind of side controls switch Acquisition Circuit and vehicle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821778352.XU CN208705708U (en) | 2018-10-30 | 2018-10-30 | A kind of side controls switch Acquisition Circuit and vehicle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208705708U true CN208705708U (en) | 2019-04-05 |
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ID=65948102
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821778352.XU Active CN208705708U (en) | 2018-10-30 | 2018-10-30 | A kind of side controls switch Acquisition Circuit and vehicle device |
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| Country | Link |
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| CN (1) | CN208705708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114035455A (en) * | 2021-11-17 | 2022-02-11 | 一汽解放汽车有限公司 | Multifunctional switch circuit, multifunctional switch device, multifunctional control method, multifunctional vehicle, and multifunctional medium |
-
2018
- 2018-10-30 CN CN201821778352.XU patent/CN208705708U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114035455A (en) * | 2021-11-17 | 2022-02-11 | 一汽解放汽车有限公司 | Multifunctional switch circuit, multifunctional switch device, multifunctional control method, multifunctional vehicle, and multifunctional medium |
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Effective date of registration: 20220318 Address after: 430090 No. b1336, chuanggu startup area, taizihu cultural Digital Creative Industry Park, No. 18, Shenlong Avenue, Wuhan Economic and Technological Development Zone, Hubei Province Patentee after: Yikatong (Hubei) Technology Co.,Ltd. Address before: 430000 no.c101, chuanggu start up area, taizihu cultural Digital Industrial Park, No.18 Shenlong Avenue, Wuhan Economic and Technological Development Zone, Hubei Province Patentee before: HUBEI ECARX TECHNOLOGY Co.,Ltd. |
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