CN209086402U - A kind of preceding wiper switch detection circuit and vehicle - Google Patents
A kind of preceding wiper switch detection circuit and vehicle Download PDFInfo
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- CN209086402U CN209086402U CN201821693489.5U CN201821693489U CN209086402U CN 209086402 U CN209086402 U CN 209086402U CN 201821693489 U CN201821693489 U CN 201821693489U CN 209086402 U CN209086402 U CN 209086402U
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- 238000001514 detection method Methods 0.000 title claims abstract description 125
- 238000005406 washing Methods 0.000 claims description 17
- 238000007689 inspection Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
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- 238000012986 modification Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model provides a kind of preceding wiper switch detection circuit and vehicle, and the circuit for preceding wiper detects, preceding wiper switch detection circuit include: before wiper switch circuit, controller and the first detection circuit；Preceding wiper switch circuit includes: mode selection circuit, and mode selection circuit includes first switch；The switch state of first switch is consistent with the switch state of preceding wiper；Controller includes the first output end and first input end；One end of the first detection resistance is electrically connected with the first output end of the first end of first switch and controller in first detection circuit, and the other end is electrically connected with the first input end of the second end of first switch and controller；By giving one resistance of preceding wiper switch circuit in parallel, it can be in the line failure between preceding wiper switch circuit or the first output end and first switch, controller can be quickly and accurately positioned the position broken down according to the variation of the current value of first input end.
Description
Technical field
The utility model relates to technical field of transportation means, in particular to a kind of preceding wiper switch detection circuit and
Vehicle.
Background technique
Currently, indispensable attachment of the preceding wiper as vehicle, especially has vehicle critically important in rainy day driving
The effect of safety guarantee, however when current wiper can not work normally, can only by way of manually checking, a step by a step into
The specific route investigation of row, finds specific location of fault, wastes the time of maintenance.
Utility model content
The purpose of this utility model is to provide a kind of preceding wiper switch detection circuit and vehicles, to improve the above problem.
To achieve the goals above, the technical solution that the utility model is taken is as follows:
In a first aspect, the utility model embodiment provides a kind of preceding wiper switch detection circuit, comprising: preceding wiper switch
Circuit, controller and the first detection circuit；
Preceding wiper switch circuit includes: mode selection circuit, and the mode selection circuit includes first switch；Described first
The switch state of switch is consistent with the switch state of preceding wiper.
The controller includes the first output end and first input end；
First detection circuit includes the first detection resistance, one end of first detection resistance and the first switch
First end and the first output end of the controller be electrically connected, the other end of first detection resistance and described first
The first input end of the second end of switch and the controller is electrically connected；
First output end for exporting the first electric current to the preceding wiper switch circuit and first detection resistance,
The controller be used for according to the second electric current at the first input end judge the preceding wiper switch circuit whether failure with
Route between first output end and the first switch whether failure.
With reference to first aspect, in possible implementation, mode selection circuit includes:
Low-speed mode circuit, the second end of the first switch include: the first connecting terminal；First connecting terminal
Switch state is consistent with the switch state of low-speed mode of the preceding wiper；
First connecting terminal is electrically connected with one end of the low-speed mode circuit, the low-speed mode circuit it is another
End is electrically connected with the input terminal of the other end of first detection resistance and the controller；
First output end is also used to export third electric current to the low-speed mode circuit and first detection resistance,
The controller be used for according to the 4th electric current at the first input end judge the low-speed mode circuit whether failure and institute
State between the first output end and the first switch whether failure.
With reference to first aspect, in possible implementation, low-speed mode circuit further include: first resistor, described first
One end of resistance is connect with the other end of the first switch, the other end and the controller of the other end and the first resistor
First input end be electrically connected.
With reference to first aspect, in possible implementation, mode selection circuit further include: high-speed mode circuit, it is described
High-speed mode circuit includes second resistance, the second end of the first switch further include: the second connecting terminal；Second wiring
The switch state of terminal is consistent with the switch state of high-speed mode of the preceding wiper；
Second connecting terminal is electrically connected with one end of the second resistance, the other end of the second resistance with it is described
The input terminal of the other end of first detection resistance and the controller is electrically connected；
First output end is also used to export the 5th electric current to the high-speed mode circuit and first detection resistance,
The controller be used for according to the 6th electric current at the first input end judge the high-speed mode circuit whether failure and institute
State between the first output end and the first switch whether failure.
With reference to first aspect, in possible implementation, mode selection circuit further include: intermittent mode circuit, it is described
Intermittent mode circuit includes 3rd resistor, the second end of the first switch further include: third connecting terminal；The third wiring
The switch state of terminal is consistent with the switch state of intermittent mode of the preceding wiper；
The third connecting terminal is electrically connected with one end of the 3rd resistor, the other end of the 3rd resistor with it is described
The input terminal of the other end of first detection resistance and the controller is electrically connected；
First output end is also used to export the 7th electric current to the intermittent mode circuit and first detection resistance,
The controller be used for according to the 8th electric current at the first input end judge the intermittent mode circuit whether failure and institute
State between the first output end and the first switch whether failure.
With reference to first aspect, in possible implementation, low-speed mode circuit includes: first resistor, first electricity
One end of resistance is connect with the other end of the first switch, the other end and the controller of the other end and the first resistor
First input end is electrically connected；
The resistance value of the first resistor, second resistance and 3rd resistor is different.
With reference to first aspect, in possible implementation, preceding wiper switch circuit further include: washing circuit and the second inspection
Slowdown monitoring circuit, the washing circuit include second switch and the 4th resistance, one end of the second switch and the 4th resistance
One end connection；Second detection circuit includes the second detection resistance, and the controller further includes second output terminal；Described second
The switch state of switch is consistent with the switch state of wash mill of the preceding wiper；
The other end of the second switch is electrically connected with one end of second detection resistance and the second output terminal,
The other end of 4th resistance is electrically connected with the other end of second detection resistance and the first input end；
The second output terminal is for exporting the 9th electric current to the washing circuit and second detection circuit, the control
Device processed be used for according to the tenth electric current at the first input end judge the washing circuit whether failure.
With reference to first aspect, in possible implementation, preceding wiper switch circuit further include: working relay and power supply
End, the working relay includes: the first contact switch and first coil, the controller further include: task driven output end
With work input terminal；
One end of first contact switch includes the 4th connecting terminal and the 5th connecting terminal, the 4th connecting terminal
It is electrically connected with the feeder ear, the 5th connecting terminal is connect with ground wire；One end of the first coil and the work are driven
Dynamic output end electrical connection；
The preceding wiper switch circuit further include: fast-acting relay, the fast-acting relay include: the second contact switch and
Second coil, the controller further include: high speed drive output and high speed input terminal；
One end of second contact switch is electrically connected with the other end of first contact switch, and the other end includes work
Connecting terminal and high speed connecting terminal, the work connecting terminal are electrically connected with the work input terminal, the high speed terminals
Son is electrically connected with institute's high speed input terminal；One end of second coil is electrically connected with the high speed drive output, and described second
The other end of coil is electrically connected with the other end of the first coil；
When the preceding wiper is in operating mode, the 4th connecting terminal is accessed in first contact switch one end, described
Work connecting terminal is accessed in second contact switch one end；
When the preceding wiper is in high-speed mode, the 4th connecting terminal is accessed in first contact switch one end, described
High speed connecting terminal is accessed in second contact switch one end；
The task driven output end and the high speed drive output are respectively used to output the first operating current and first
High speed electric current is to the working relay and the fast-acting relay, and the controller is according to the work input terminal and the height
Second operating current of fast input terminal and the second high speed electric current judge whether the working relay and the fast-acting relay are former
Barrier.
With reference to first aspect, in possible implementation, preceding wiper switch circuit further include: preceding rain shaving electrical machine, it is described
One end of preceding rain shaving electrical machine includes two connecting terminals, and described two connecting terminals are respectively at the work connecting terminal and described
The connection of high speed connecting terminal；
The other end of the preceding rain shaving electrical machine is ground terminal, corresponding, the controller further include: detection switch and stopping
Position input terminal, the ground terminal are electrically connected with the stop position input terminal by the detection switch；
When the preceding rain shaving electrical machine stops working, the detection switch closure, when preceding rain shaving electrical machine work, institute
Detection switch opening is stated, the stop position input terminal is used for the stopping of ground terminal when stopping working according to the preceding rain shaving electrical machine
Operating current, judge the preceding rain shaving electrical machine, working relay and fast-acting relay whether failure.
Second aspect, the utility model embodiment provide a kind of vehicle, comprising: vehicle body and such as first aspect are any
The preceding wiper switch detection circuit of one embodiment, the preceding wiper switch detection circuit are set on vehicle body.
The beneficial effects of the utility model include:
The utility model provides a kind of preceding wiper switch detection circuit, by giving one electricity of preceding wiper switch circuit in parallel
Resistance, controller the first electric current of output, can be in preceding wiper switch circuits to the preceding wiper switch circuit and the first detection resistance
Or when the first line failure between output end and first switch, controller is according to the change of the current value of first input end
Change, the position broken down can be quickly and accurately positioned.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the circuit structure diagram for the preceding wiper switch detection circuit that the utility model embodiment 1 provides；
Fig. 2 is the circuit structure diagram to mode selection circuit detection that the utility model embodiment 1 provides；
Fig. 3 is the circuit structure diagram that the addition that the utility model embodiment 1 provides detects washing circuit；
Fig. 4 is circuit structure diagram of the addition that provides of the utility model embodiment 1 to preceding wiper relay test；
Fig. 5 is the circuit structure diagram that the addition that the utility model embodiment 1 provides detects preceding wiper motor.
Icon: wiper switch detection circuit before 10-；Wiper switch circuit before 101-；The first detection circuit of 102-；103- control
Device processed；The first output end of 1041-；1042- first input end；1043- second output terminal；1044- task driven output end；
1045- high speed drive output；1046- high speed input terminal；1047- work input terminal；1048- stop position input terminal；1051-
One switch；The first connecting terminal of 1052-；The second connecting terminal of 1053-；1054- third connecting terminal；1055- second switch；
The first detection resistance of 1061-；1062- first resistor；1063- second resistance；1064- 3rd resistor；The 4th resistance of 1065-；
The second detection resistance of 1066-；201- working relay；The first contact switch of 2011-；2012- first coil；2013- the 4th connects
Line terminals；The 5th connecting terminal of 2014-；202- feeder ear；203- fast-acting relay；The second contact switch of 2031-；2032-
Two coil；2033- work connecting terminal；2034- high speed connecting terminal；Rain shaving electrical machine before 204-；205- detection switch.
Specific embodiment
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, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
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 utility model embodiment, it should be noted that indicating position or positional relationship is based on attached drawings
Shown in orientation or positional relationship or the utility model product using when the orientation or positional relationship usually put, or
Orientation or positional relationship that those skilled in the art usually understand or the utility model product using when usually put
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, it is not understood to indicate or imply phase
To importance.
In the description of the utility model embodiment, it is also necessary to which explanation is unless specifically defined or limited otherwise, art
Language " setting ", " installation ", " 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 and be directly connected to, can also be indirectly connected with by intermediary.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Embodiment 1
Referring to FIG. 1, Fig. 1 is the circuit structure for the preceding wiper switch detection circuit 10 that the utility model embodiment 1 provides
Figure.
Preceding wiper switch detection circuit 10 includes: preceding wiper switch circuit 101, controller 103 and the first detection circuit
102。
Preceding wiper switch circuit 101 includes: mode selection circuit, and mode selection circuit includes first switch 1051；First
The switch state of switch 1051 is consistent with the switch state of preceding wiper.
Controller 103 includes the first output end 1041 and first input end 1042.
First detection circuit 102 include the first detection resistance 1061, one end of first detection resistance 1061 with it is described
First output end 1041 of the first end of first switch 1051 and the controller 103 is electrically connected, the first detection electricity
The first input end 1042 of the other end of resistance 1061 and the second end of the first switch 1051 and the controller 103 electricity
Connection.
First output end 1041 is for exporting the first electric current to the preceding wiper switch circuit 101 and the first detection electricity
Resistance 1061, the controller 103 are used to judge the preceding wiper switch according to the second electric current at the first input end 1042
Circuit 101 whether the route between failure and first output end 1041 and the first switch 1051 whether failure.
By by 103 first output end 1041 of both ends access controller and first input end of preceding wiper switch circuit 101
1042, and the first detection resistance 1061 is accessed in the both ends parallel connection of preceding wiper switch circuit 101, when the identical voltage of offer
When, it, can be according to the current value size that 103 first input end 1042 of controller obtains within the scope of a normal undulating value
Difference, before judging between wiper switch circuit 101 or first switch 1051 and the first output end 1041 of controller 103
Whether route breaks down, and open circuit or short circuit has occurred, and then controller 103 can show or transmit the letter of failure
Breath facilitates report either to overhaul, improves efficiency, reduce the probability caused danger.
Further, the electric current of the first output end 1041 output of controller 103 can be pulse current, it is assumed that duty ratio
It is 1/51, can be realized can carry out one-time detection to entire circuit every such as 50ms, improve the safety of vehicle operation, and mention
The high efficiency of maintenance.
Further, the first detection that first detection resistance 1061 or multiple resistance serial or parallel connections are formed
Circuit 102, the first output end 1041 of one end connection controller 103 of the first detection circuit 102, the other end connect controller
103 first input end 1042, the utility model is without limitation.
Referring to FIG. 2, Fig. 2 is the circuit structure diagram to mode selection circuit detection that the utility model embodiment 1 provides.
In existing preceding wiper switch circuit 101 include low-speed mode circuit, high-speed mode circuit and intermittent mode circuit,
Circuit detection is carried out to above-mentioned Three models circuit by controller 103, may be implemented to carry out more preceding wiper switch circuit 101
More fault detections.
Optionally, mode selection circuit includes: low-speed mode circuit, and the second end of the first switch 1051 includes:
One connecting terminal 1052；The switch shape of the low-speed mode of the switch state of first connecting terminal 1052 and the preceding wiper
State is consistent.
First connecting terminal 1052 is electrically connected with one end of the low-speed mode circuit, the low-speed mode circuit
The other end is electrically connected with the input terminal of the other end of first detection resistance 1061 and the controller 103.
First output end 1041 is also used to export third electric current to the low-speed mode circuit and first detection
Resistance 1061, the controller 103 are used to judge the low-speed mode according to the 4th electric current at the first input end 1042
Circuit whether between failure and first output end 1041 and the first switch 1051 whether failure.
Optionally, low-speed mode circuit further include: first resistor 1062, one end of the first resistor 1062 and described the
The other end of one switch 1051 connects, and the first of the other end and the controller 103 of the other end and the first resistor 1062
Input terminal 1042 is electrically connected.
The series connection first resistor 1062 in low-speed mode circuit, when can prevent low-speed mode circuit from short circuit occurs, due to
Too small and the second electric current the current value variation of low-speed mode circuit resistance value less, breaks down and cannot be controlled device 103 processed and find,
Improve the reliability of the detection of controller 103.
Optionally, mode selection circuit further include: high-speed mode circuit, the high-speed mode circuit includes second resistance
1063, the second end of the first switch 1051 further include: the second connecting terminal 1053；Second connecting terminal 1053 is opened
Off status is consistent with the switch state of high-speed mode of the preceding wiper.
Second connecting terminal 1053 is electrically connected with one end of the second resistance 1063, the second resistance 1063
The other end is electrically connected with the input terminal of the other end of first detection resistance 1061 and the controller 103.
First output end 1041 is also used to export the 5th electric current to the high-speed mode circuit and first detection
Resistance 1061, the controller 103 are used to judge the high-speed mode according to the 6th electric current at the first input end 1042
Circuit whether between failure and first output end 1041 and the first switch 1051 whether failure.
Optionally, mode selection circuit further include: intermittent mode circuit, the intermittent mode circuit includes 3rd resistor
1064, the second end of the first switch 1051 further include: third connecting terminal 1054；The third connecting terminal 1054 is opened
Off status is consistent with the switch state of intermittent mode of the preceding wiper.
The third connecting terminal 1054 is electrically connected with one end of the 3rd resistor 1064, the 3rd resistor 1064
The other end is electrically connected with the input terminal of the other end of first detection resistance 1061 and the controller 103.
First output end 1041 is also used to export the 7th electric current to the intermittent mode circuit and first detection
Resistance 1061, the controller 103 are used to judge the intermittent mode according to the 8th electric current at the first input end 1042
Circuit whether between failure and first output end 1041 and the first switch 1051 whether failure.
By by the first output end 1041 of one end access controller 103 of first switch 1051, by the electricity of Three models
The first input end 1042 of the other end access controller 103 on road, and the first detection resistance 1061 in parallel, can be in controller
When the voltage that 103 the first output end 1041 provides is identical, the electricity of three kinds of modes may determine that according to obtained current value
Whether the route between road or first switch 1051 and the first output end 1041 of controller 103 breaks down, and occurs
The concrete type of failure, and then controller 103 can show or transmit the information of failure, facilitate report either to overhaul, mention
High efficiency reduces the probability caused danger.
Some possible situations will be lifted below illustrates the work that fault detection positioning is realized using the first detection resistance 1061
Principle: assuming that intermittent mode circuit is connected in first switch 1051, when each circuit is normal, then the 4th electric current obtained is i1；
When open circuit fault occurs for blocking circuit, the electric current of the first output end 1041 output can only by the first detection resistance 1061, first
The 4th electric current that input terminal 1042 obtains is i2, it is known that i2Less than i1；When short trouble, the first detection resistance occur for blocking circuit
1061 are short-circuited, and the electric current of the first output end 1041 output can only be by blocking circuit, the obtained of first input end 1042
Four electric currents are i3, it is known that i3Greater than i1；When between first switch 1051 and the first output end 1041 route occur open circuit fault,
4th electric current is i4, it is known that i4Less than i2, so the sequence of several 4th current values from big to small are as follows: i3, i1, i2, i4；Work as control
Difference between some in the current value and four current values that the first input end 1042 of device 103 processed obtains is in one and presets
Section when, it can be learnt that whether break down and failure occur position and type, realize controller using current value
The control of 103 pairs of circuits.The detection of other circuits and the testing principle of blocking circuit are identical, and the present embodiment 1 repeats no more this.
Optionally, low-speed mode circuit includes: first resistor 1062, one end of the first resistor 1062 and described first
The other end of switch 1051 connects, and the first of the other end of the other end and the first resistor 1062 and the controller 103 is defeated
Enter end 1042 to be electrically connected.
The resistance value of the first resistor 1062, second resistance 1063 and 3rd resistor 1064 is different.
For the resistance of the circuit design difference resistance value of each mode, it can allow controller 103 which kind mode do not known
Circuit connect in the case where, when only the circuit of each mode need to be turned on one time in artificial detection, controller 103
The information that line fault has occurred according to the circuit that current value each time obtains which specific item kind mode, improves the effect of maintenance
Rate.
Referring to FIG. 3, Fig. 3 is the circuit structure diagram that the addition that the utility model embodiment 1 provides detects washing circuit.
It further include washing circuit in existing preceding wiper switch circuit 101, the present embodiment can also pass through 103 pairs of washing circuits of controller
Carry out fault detection.
Optionally, preceding wiper switch circuit 101 further include: washing circuit and the second detection circuit, the washing circuit packet
Include second switch 1055 and the 4th resistance 1065, one end company of one end of the second switch 1055 and the 4th resistance 1065
It connects；Second detection circuit includes the second detection resistance 1066, and the controller 103 further includes second output terminal 1043；Institute
The switch state for stating second switch 1055 is consistent with the switch state of the preceding wiper wash mill.
One end and the second output terminal of the other end of the second switch 1055 and second detection resistance 1066
1043 are electrically connected, the other end of the 4th resistance 1065 and the other end and described first of second detection resistance 1066
Input terminal 1042 is electrically connected.
The second output terminal 1043 is for exporting the 9th electric current to the washing circuit and second detection circuit, institute
State controller 103 for according to the tenth electric current at the first input end 1042 judge the washing circuit whether failure.
Specifically, in the present embodiment, second switch 1055 is push switch, in other embodiments, or
Slipping switch etc., the present embodiment is without limitation.
The fault detection principle for washing circuit is identical as to low speed, high speed, the testing principle of interval isotype circuit, please join
According to the above-mentioned working principle to high-speed mode circuit for example, the present embodiment repeats no more this.
Referring to FIG. 4, the circuit structure diagram to preceding wiper relay test is added in Fig. 4.Existing preceding wiper switch electricity
Working relay 201, fast-acting relay 203 and the preceding rain shaving electrical machine 204 of wiper before further including in road 101, the present embodiment is also
Fault detection can be carried out to two relays and preceding rain shaving electrical machine 204 by controller 103, to realize to preceding wiper switch electricity
The complete detection on road 101.
Preceding wiper switch circuit 101 further include: feeder ear 202, the working relay 201 include: the first contact switch
2011 and first coil 2012, the controller 103 further include: task driven output end 1044 and work input terminal 1047.
One end of first contact switch 2011 includes the 4th connecting terminal 2013 and the 5th connecting terminal 2014, described
4th connecting terminal 2013 is electrically connected with the feeder ear 202, and the 5th connecting terminal 2014 is connect with ground wire；Described first
One end of coil 2012 is electrically connected with the task driven output end 1044.
Fast-acting relay 203 includes: the second contact switch 2031 and the second coil 2032, the controller 103 further include:
High speed drive output 1045 and high speed input terminal 1046.
One end of second contact switch 2031 is electrically connected with the other end of first contact switch 2011, and the other end includes
Work connecting terminal 2033 and high speed connecting terminal 2034, the work connecting terminal 2033 and 1047 electricity of work input terminal
Connection, the high speed connecting terminal 2034 are electrically connected with institute high speed input terminal 1046；One end of second coil 2032 and institute
State the electrical connection of high speed drive output 1045, the other end of the other end of second coil 2032 and the first coil 2012
Electrical connection.
When preceding wiper is in operating mode, the 4th connecting terminal 2013 is accessed in described first contact switch, 2011 one end,
Work connecting terminal 2033 is accessed in described second contact switch, 2031 one end.
When preceding wiper is in high-speed mode, the 4th connecting terminal 2013 is accessed in described first contact switch, 2011 one end,
High speed connecting terminal 2034 is accessed in described second contact switch, 2031 one end.
Task driven output end 1044 and the high speed drive output 1045 be respectively used to the first operating current of output with
First high speed electric current is to the working relay 201 and the fast-acting relay 203, and the controller 103 is according to the work
The second operating current and the second high speed electric current of input terminal 1047 and the high speed input terminal 1046, judge the working relay
201 with the fast-acting relay 203 whether failure.
By in the detection of two relay access controllers 103, examined by electric current of the controller 103 to two output ends
It surveys, to also whether failure and can occur which kind of failure is monitored to two relays.
The some possible situations for lifting working relay 201 illustrate that the work that the two relays are carried out with fault detection is former
Reason: assuming that task driven output end 1044 works, when working relay 201 is normal, then the second operating current obtained is i5；
When open circuit fault occurs for working relay 201, then the second operating current obtained is i6, it is known that i5Greater than i6；Work as working relay
201 occur short trouble, then the second operating current obtained is i7, it is known that i7Greater than i5；So three the second working current values from
Small sequence is arrived greatly are as follows: i7, i5, i6；I.e. when the current value and three current values that the work input terminal 1047 of controller 103 obtains
In difference between some when being in a preset section, it can be learnt that whether breaking down and position that failure occurs
It sets and type, realizes control of the controller 103 to circuit using current value.The testing principle of fast-acting relay 203 and work
The testing principle of relay 201 is identical, and the present embodiment 1 repeats no more this.
Referring to FIG. 5, Fig. 5 is the circuit knot that the addition that the utility model embodiment 1 provides detects preceding rain shaving electrical machine 204
Composition.One end of preceding rain shaving electrical machine 204 includes two connecting terminals, and described two connecting terminals are respectively at the work terminals
Son 2033 and the high speed connecting terminal 2034 connection.
The other end of the preceding rain shaving electrical machine 204 is ground terminal, corresponding, controller 103 further include: detection switch 205
With stop position input terminal 1048, the ground terminal is electrically connected with the stop position input terminal 1048 by the detection switch 205.
When the preceding rain shaving electrical machine 204 stops working, the detection switch 205 is closed, when the preceding rain shaving electrical machine 204
When work, the detection switch 205 is opened, and the stop position input terminal 1048 is used to be stopped according to the preceding rain shaving electrical machine 204
The electric current that stops working of ground terminal when work judges the preceding rain shaving electrical machine 204, working relay 201 and fast-acting relay
203 whether failure.
Stop position input terminal 1048 is accessed in the ground terminal of preceding rain shaving electrical machine 204, utilizes 1048 pairs of institutes of stop position input terminal
Electric current of the rain shaving electrical machine 204 when stopping working is detected before stating, it can be determined that out before closing after wiper, two relays
Device and preceding rain shaving electrical machine 204 can normal switching-off, and judge when being unable to normal switching-off, whether circuit breaks down, that is, is closing
Before closing after wiper, if stop position input terminal 1048 detects electric current, illustrate still there is electric current in circuit, i.e. circuit and feeder ear
Fail to close there are fault between 202, to improve the efficiency of malfunction elimination.
Embodiment 2
The present embodiment 2 provides a kind of vehicle, and vehicle includes: preceding wiper switch detection circuit 10 and vehicle body, preceding windscreen wiper
Switch detection circuit 10 is set on vehicle body.
Preceding wiper switch detection circuit 10 in the present embodiment 2 is with the preceding wiper switch detection circuit 10 in embodiment 1
Based on the utility model under same design, by aforementioned to the detailed of preceding wiper switch detection circuit 10 and its various change form
Description, those skilled in the art can be apparent from the implementation process of vehicle in the present embodiment, so in order to illustrate the letter of book
Clean, details are not described herein.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of preceding wiper switch detection circuit, which is characterized in that the circuit for preceding wiper detects, comprising:
Preceding wiper switch circuit, controller and the first detection circuit；
The preceding wiper switch circuit includes: mode selection circuit, and the mode selection circuit includes first switch；Described first
The switch state of switch is consistent with the switch state of preceding wiper；
The controller includes the first output end and first input end；
First detection circuit includes the first detection resistance, and the of one end of first detection resistance and the first switch
First output end of one end and the controller is electrically connected, the other end of first detection resistance and the first switch
Second end and the first input end of the controller be electrically connected；
First output end for export the first electric current to the preceding wiper switch circuit and first detection resistance, it is described
Controller be used to be judged according to the second electric current at the first input end the preceding wiper switch circuit whether failure and described
Route between first output end and the first switch whether failure.
2. preceding wiper switch detection circuit according to claim 1, which is characterized in that the mode selection circuit includes:
Low-speed mode circuit, the second end of the first switch include: the first connecting terminal；The switch state of first connecting terminal
It is consistent with the switch state of low-speed mode of the preceding wiper；
First connecting terminal is electrically connected with one end of the low-speed mode circuit, the other end of the low-speed mode circuit with
The other end of first detection resistance and the input terminal of the controller are electrically connected；
First output end is also used to export third electric current to the low-speed mode circuit and first detection resistance, described
Controller be used to be judged according to the 4th electric current at the first input end low-speed mode circuit whether failure and described the
Between one output end and the first switch whether failure.
3. preceding wiper switch detection circuit according to claim 2, which is characterized in that the low-speed mode circuit also wraps
Include: first resistor, one end of the first resistor are connect with the other end of the first switch, the other end and the first resistor
The other end and the first input end of the controller be electrically connected.
4. preceding wiper switch detection circuit according to claim 2, which is characterized in that the mode selection circuit also wraps
Include: high-speed mode circuit, the high-speed mode circuit includes second resistance, the second end of the first switch further include: second
Connecting terminal；The switch state of second connecting terminal is consistent with the switch state of high-speed mode of the preceding wiper；
Second connecting terminal is electrically connected with one end of the second resistance, the other end of the second resistance and described first
The input terminal of the other end of detection resistance and the controller is electrically connected；
First output end is also used to export the 5th electric current to the high-speed mode circuit and first detection resistance, described
Controller be used to be judged according to the 6th electric current at the first input end high-speed mode circuit whether failure and described the
Between one output end and the first switch whether failure.
5. preceding wiper switch detection circuit according to claim 4, which is characterized in that the mode selection circuit also wraps
Include: intermittent mode circuit, the intermittent mode circuit includes 3rd resistor, the second end of the first switch further include: third
Connecting terminal；The switch state of the third connecting terminal is consistent with the switch state of intermittent mode of the preceding wiper；
The third connecting terminal is electrically connected with one end of the 3rd resistor, the other end of the 3rd resistor and described first
The input terminal of the other end of detection resistance and the controller is electrically connected；
First output end is also used to export the 7th electric current to the intermittent mode circuit and first detection resistance, described
Controller be used to be judged according to the 8th electric current at the first input end intermittent mode circuit whether failure and described the
Between one output end and the first switch whether failure.
6. preceding wiper switch detection circuit according to claim 5, which is characterized in that the low-speed mode circuit includes:
First resistor, one end of the first resistor are connect with the other end of the first switch, the other end and the first resistor
The first input end of the other end and the controller is electrically connected；
The resistance value of the first resistor, second resistance and 3rd resistor is different.
7. preceding wiper switch detection circuit according to claim 1, which is characterized in that the preceding wiper switch circuit also wraps
Include: washing circuit and the second detection circuit, the washing circuit include second switch and the 4th resistance, and the one of the second switch
End is connect with one end of the 4th resistance；Second detection circuit includes the second detection resistance, and the controller further includes
Second output terminal；The switch state of the second switch is consistent with the switch state of wash mill of the preceding wiper；
The other end of the second switch is electrically connected with one end of second detection resistance and the second output terminal, described
The other end of 4th resistance is electrically connected with the other end of second detection resistance and the first input end；
The second output terminal is for exporting the 9th electric current to the washing circuit and second detection circuit, the controller
For according to the tenth electric current at the first input end judge the washing circuit whether failure.
8. preceding wiper switch detection circuit according to claim 1, which is characterized in that the preceding wiper switch circuit also wraps
Include: working relay and feeder ear, the working relay include: the first contact switch and first coil, and the controller is also
It include: task driven output end and work input terminal；
One end of first contact switch includes the 4th connecting terminal and the 5th connecting terminal, the 4th connecting terminal and institute
Feeder ear electrical connection is stated, the 5th connecting terminal is connect with ground wire；One end of the first coil and the task driven are defeated
Outlet electrical connection；
The preceding wiper switch circuit further include: fast-acting relay, the fast-acting relay include: the second contact switch and second
Coil, the controller further include: high speed drive output and high speed input terminal；
One end of second contact switch is electrically connected with the other end of first contact switch, and the other end includes work wiring
Terminal and high speed connecting terminal, the work connecting terminal are electrically connected with the work input terminal, the high speed connecting terminal with
The electrical connection of institute's high speed input terminal；One end of second coil is electrically connected with the high speed drive output, second coil
The other end be electrically connected with the other end of the first coil；
When the preceding wiper is in operating mode, the 4th connecting terminal of first contact switch one end access, described second
Work connecting terminal is accessed in contact switch one end；
When the preceding wiper is in high-speed mode, the 4th connecting terminal of first contact switch one end access, described second
High speed connecting terminal is accessed in contact switch one end；
The task driven output end and the high speed drive output are respectively used to the first operating current of output and the first high speed
For electric current to the working relay and the fast-acting relay, the controller is defeated according to the work input terminal and the high speed
The second operating current and the second high speed electric current for entering end, judge the working relay and the fast-acting relay whether failure.
9. preceding wiper switch detection circuit according to claim 8, which is characterized in that the preceding wiper switch circuit also wraps
Include: one end of preceding rain shaving electrical machine, the preceding rain shaving electrical machine includes two connecting terminals, and described two connecting terminals are respectively at described
Work connecting terminal is connected with the high speed connecting terminal；
The other end of the preceding rain shaving electrical machine is ground terminal, corresponding, the controller further include: detection switch and stop position are defeated
Enter end, the ground terminal is electrically connected with the stop position input terminal by the detection switch；
When the preceding rain shaving electrical machine stops working, the detection switch closure, when preceding rain shaving electrical machine work, the inspection
It surveys switch to open, the stop position input terminal is used for stopping working for ground terminal when stopping working according to the preceding rain shaving electrical machine
Electric current, judge the preceding rain shaving electrical machine, the working relay and the fast-acting relay whether failure.
10. a kind of vehicle, which is characterized in that the vehicle include: vehicle body and as claim 1-9 it is described in any item before
Wiper switch detection circuit, the preceding wiper switch detection circuit are set on the vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821693489.5U CN209086402U (en) | 2018-10-18 | 2018-10-18 | A kind of preceding wiper switch detection circuit and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821693489.5U CN209086402U (en) | 2018-10-18 | 2018-10-18 | A kind of preceding wiper switch detection circuit and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209086402U true CN209086402U (en) | 2019-07-09 |
Family
ID=67119893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821693489.5U Expired - Fee Related CN209086402U (en) | 2018-10-18 | 2018-10-18 | A kind of preceding wiper switch detection circuit and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209086402U (en) |
-
2018
- 2018-10-18 CN CN201821693489.5U patent/CN209086402U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20190709 |