CN206510956U - A kind of steering wheel heater circuit and automobile - Google Patents
A kind of steering wheel heater circuit and automobile Download PDFInfo
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- CN206510956U CN206510956U CN201720208441.XU CN201720208441U CN206510956U CN 206510956 U CN206510956 U CN 206510956U CN 201720208441 U CN201720208441 U CN 201720208441U CN 206510956 U CN206510956 U CN 206510956U
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Abstract
The utility model discloses a kind of steering wheel heater circuit and automobile.The heater circuit includes：Key acquisition module, processor, heating module, power management module, fault diagnosis module, LED drive module and temperature collect module.The automobile includes the steering wheel using the heater circuit.The utility model for steering wheel by adding heater circuit, in cold winter steering wheel can be made to keep certain comfort temperature, and possess LED light display heated condition, whether detectable heater circuit there are the failures such as short circuit, the driving experience of driver is more preferable, it is stiff because of cold to prevent the hand of driver, causes that action is insensitive, can not flexibly tackle emergency situations etc., it is ensured that driving safety.
Description
Technical field
The utility model is related to technical field of automotive electronics, more particularly to a kind of steering wheel heater circuit and automobile.
Background technology
In cold winter, driver's steer direction disk, hand is exposed in cold air for a long time, even if in-car open warm
Gas, driver's hand also or easily ice-cold numbness, be unfavorable for driving safety, driver comfort is also very poor.
Utility model content
The purpose of this utility model is to propose a kind of steering wheel heater circuit and automobile, the steering wheel of automobile can be entered
Row heating, lifts the driving comfort of driver.
For up to this purpose, the utility model uses following technical scheme：
On the one hand, the utility model provides a kind of steering wheel heater circuit, including：Key acquisition module, processor, heating
Module, power management module, fault diagnosis module, LED drive module and temperature collect module；
The input of the key acquisition module is connected with external key, and output end is connected with processor, is used for gathering
The push button signalling at family is simultaneously sent to processor；
The input of the power management module is connected with vehicle power, and output end passes through fault diagnosis module and heated mould
Block is connected, for voltage stabilizing and voltage conversion；
The fault diagnosis module is connected with processor, heating module respectively, for when detecting fault, passing through
Processor disconnects the power supply of heating module；
The LED drive module is connected with processor, under the control of the processor, according to the heating module
Working condition, driving LED light light or extinguish；
The temperature collect module, the temperature for gathering steering wheel；
The heating module, for being heated according to computer heating control instruction；
The processor, is connected with temperature collect module and heating module, is heated for being exported according to the temperature of steering wheel
Control instruction is to adjust the power of heating module.
Wherein, the power management module includes：Transient Suppression Diode, backward dioded and linear power supply conversion core
Piece；
One end of the Transient Suppression Diode is connected with vehicle power, other end ground connection；
The positive pole of the backward dioded is connected with vehicle power, the input of negative pole and the linear power supply conversion chip
Connection, and connected by the output end of resistance and processor；
The output end of the linear power supply conversion chip is driven with key acquisition module, processor, fault diagnosis module, LED
Dynamic model block is connected with temperature collect module, for providing operating voltage.
Wherein, the fault diagnosis module includes：
Flash driving chip, output end is connected with heating module, and input is connected with processor, the IS of flash driving chip
One end of pin connecting detection resistance, for judging whether the heating module is short by detecting the electric current of the detection resistance
Road；
The other end ground connection of the detection resistance.
Wherein, the LED drive module includes：One PNP type triode and a NPN type triode；
The emitter stage of the PNP type triode by first resistor cut-in operation voltage, colelctor electrode by second resistance with
LED light is connected, and exports flash drive signal, and base stage is connected by the 4th resistance with the colelctor electrode of the NPN type triode；
And the emitter stage of the PNP type triode is connected with base stage by the 5th resistance；
The base stage of the NPN type triode is connected by the signal output part of 3rd resistor and processor, grounded emitter,
And base stage is connected with emitter stage by the 6th resistance.
Or, the LED drive module includes：One PNP type triode and a NPN type triode；
The emitter stage of the PNP type triode is connected with base stage by the 5th resistance, the 4th resistance that base stage passes through series connection
It is connected with the 7th resistance with LED light, exports low side drive signal, and be connected with the colelctor electrode of the NPN type triode；
The base stage of the NPN type triode is connected by the signal output part of 3rd resistor and processor, grounded emitter,
And base stage is connected with emitter stage by the 6th resistance.
Wherein, the temperature collect module includes：
First divider resistance, one end connection operating voltage, the other end connects temperature sensor and the second divider resistance respectively；
The other end of second divider resistance and the signal output part of processor are connected；
Temperature sensor is arranged on the steering wheel；
The two ends of second divider resistance pass through capacitor grounding respectively.
Wherein, the key acquisition module includes：
3rd divider resistance, one end connection operating voltage, other end connection external key, for gathering low level button
Signal, and connected by the input of the 4th divider resistance and processor；
One end being connected with processor of 4th divider resistance passes through resistance eutral grounding.
Or, the key acquisition module includes：
4th divider resistance, one end connection external key, the push button signalling for gathering high level, and it is defeated with processor
Enter end connection；
The two ends of 4th divider resistance pass through resistance eutral grounding.
In terms of another side, the utility model provides a kind of automobile, including steering wheel, above-mentioned steering wheel heater circuit.
The beneficial effects of the utility model are：
The utility model for steering wheel by adding heater circuit, and heater circuit sets processor, heating module, power supply pipe
Module, fault diagnosis module, LED drive module and temperature collect module are managed, steering wheel is kept certain temperature in winter
Degree, and possess LED light display heated condition, whether detectable heater circuit there are the failures such as short circuit.
Brief description of the drawings
Fig. 1 is the schematic diagram for the steering wheel heater circuit that the utility model embodiment is provided.
Fig. 2 is the circuit diagram for the power management module that the utility model embodiment is provided.
Fig. 3 is the circuit diagram for the fault diagnosis module that the utility model embodiment is provided.
Fig. 4 is the circuit diagram for the first LED drive module that the utility model embodiment is provided.
Fig. 5 is the circuit diagram for second of LED drive module that the utility model embodiment is provided.
Fig. 6 is the circuit diagram for the temperature collect module that the utility model embodiment is provided.
Fig. 7 is the circuit diagram that the key acquisition module that the utility model embodiment is provided gathers low level signal.
Fig. 8 is the circuit diagram that the key acquisition module that the utility model embodiment is provided gathers high level signal.
Embodiment
To make the utility model technical problem solved, the technical scheme used and the technique effect reached clearer,
The technical scheme of the utility model embodiment is described in further detail below in conjunction with accompanying drawing, it is clear that described reality
It is only a part of embodiment of the utility model to apply example, rather than whole embodiments.
The present embodiment provides a kind of steering wheel heater circuit, it is adaptable to need the scene heated to steering wheel, can be general
All over the vehicle for being applied to have steering wheel.
Fig. 1 is the schematic diagram for the steering wheel heater circuit that the utility model embodiment is provided.As shown in figure 1, the heating
Circuit includes：Key acquisition module 2, processor 7, heating module 6, power management module 1, fault diagnosis module 4, LED drivings
Module 5 and temperature collect module 3.
The input of the key acquisition module 2 is connected with external key, and output end is connected with processor 7, for gathering
The push button signalling of user is simultaneously sent to processor 7, starts or stops accordingly so that processor 7 can be performed according to the instruction of user
Only heating, temperature adjustment, timing etc. are operated
The input of the power management module 1 is connected with vehicle power BATT, output end by fault diagnosis module 4 with
Heating module 6 is connected, and for voltage stabilizing and voltage conversion, the voltage after conversion provides operating voltage for other modules.
The fault diagnosis module 4 is connected with heating module 6, for the notifier processes device 7 when detecting fault, by
Processor 7 disconnects the power supply of heating module 6, and controls other modules to perform corresponding security strategy.
The LED drive module 5 is connected with processor 7, under the control of the processor 7, according to the heating
The working condition of module 6, driving LED light is lighted or extinguished, for example, LED light flashes during fault, during heating
LED light is often bright etc..
The temperature collect module 3, the temperature for gathering steering wheel.
The heating module 6, is heated, generally heating resistor etc. for being instructed according to the computer heating control of processor 7
Component, the heating power of heating module 6 is adjustable.
The processor 7, is connected with the temperature collect module 3 and heating module 6, defeated for the temperature according to steering wheel
Go out computer heating control instruction to adjust the power of heating module 6, processor 7 includes single-chip microcomputer and vehicular control unit.
Fig. 2 is the circuit diagram for the power management module that the utility model embodiment is provided.As shown in Fig. 2 the power supply pipe
Reason module 1 includes：Transient Suppression Diode TVS, backward dioded SIJ and linear power supply conversion chip LDO.
Transient Suppression Diode TVS one end is connected with vehicle power BATT, other end ground connection.
Backward dioded SIJ positive pole is connected with vehicle power BATT, the input of negative pole and linear power supply conversion chip LDO
End connection, and be connected by resistance with the output end of processor 7.
Linear power supply conversion chip LDO output end and key acquisition module 2, processor 7, fault diagnosis module 4, LED
Drive module 5 is connected with temperature collect module 3, for providing operating voltage, i.e., vehicle power BATT is converted into low pressure VCC,
It is supplied to each module to use.
The power management module 1 also include connected with backward dioded SIJ negative pole and with linear power supply conversion chip
Resistance R1 in parallel LDO, the output signal of processor 7 passes through resistance R1 input linear power conversion chips LDO.Resistance R1 with
Resistance R2 and electric capacity C1 are connected between processor 7, resistance R2 and electric capacity C1 are in parallel and ground connection.
Fig. 3 is the circuit diagram for the fault diagnosis module that the utility model embodiment is provided.As shown in figure 3, the failure is examined
Disconnected module 4 includes：Flash driving chip U1, output end is connected with heating module 6, and input (IN pins) is connected with processor 7,
The IS pin connecting detection resistance R3 of flash driving chip one end connection, processor 7 is by detecting the detection resistance R3's
Electric current judges whether the heating module 6 is short-circuit, detection resistance R3 other end ground connection.When heating module 6 has short trouble,
Processor 7 detects the electric current increase for flowing through detection resistance R3, it indicates that flash driving chip U1 disconnects heating module 6 and work
The connection of power supply.
Flash driving chip U1 uses flash drive circuit, with the effect such as current detecting, overheat protector, overvoltage protection,
When short circuit occurs in heating module 6, heating module 6 and the connection of working power, protection circuit are cut off from power end.
Fig. 4 is the circuit diagram for the first LED drive module that the utility model embodiment is provided.As shown in figure 4, described
LED drive module 5 includes：At least include a PNP type triode Q2 and one inside driving chip U2, driving chip U2
NPN type triode Q1.The emitter stage of the PNP type triode Q2 is led to by first resistor R9 cut-in operation voltage VCC, colelctor electrode
Cross second resistance R8 to be connected with LED light, export flash drive signal, base stage passes through the 4th resistance R7 and the NPN type three
Pole pipe Q1 colelctor electrode connection；And the emitter stage of the PNP type triode Q2 is connected with base stage by the 5th resistance R6.It is described
NPN type triode Q1 base stage is connected by 3rd resistor R4 with the signal output part of processor 7, grounded emitter, and base stage
It is connected with emitter stage by the 6th resistance R5.The situation of high level output is needed suitable for LED light.
Fig. 5 is the circuit diagram for second of LED drive module that the utility model embodiment is provided.In other embodiments,
As shown in figure 5, the LED drive module 5 includes：At least include a positive-negative-positive three inside driving chip U2, driving chip U2
A pole pipe Q2 and NPN type triode Q1.
The emitter stage of the PNP type triode Q2 is connected with base stage by the 5th resistance R6, base stage pass through series connection the 4th
Resistance R7 and the 7th resistance R10 are connected with LED light, export low side drive signal, and with the collection of the NPN type triode Q1
Electrode is connected；The base stage of the NPN type triode Q1 is connected by 3rd resistor R4 with the signal output part of processor 7, transmitting
Pole is grounded, and base stage is connected with emitter stage by the 6th resistance R5, provides ground for LED light.
The LED drive circuit output high level or low level, typically refer to according to the LED of concrete configuration the need for specific
Show the drive level of lamp to select.
Fig. 6 is the circuit diagram for the temperature collect module that the utility model embodiment is provided.As shown in fig. 6, the temperature is adopted
Collection module 3 includes：
First divider resistance R11, one end connection operating voltage VCC, the other end connects temperature sensor and second point respectively
Piezoresistance R12；First divider resistance R11 uses precision resister.
Second divider resistance R12, the other end is connected with the signal output part of processor 7.
Temperature sensor is set on the steering wheel, the temperature for gathering steering wheel；In the present embodiment, using temperature-sensitive electricity
NTC is hindered, thermistor NTC one end connects the first divider resistance R11, other end connection heating module 6.
Second divider resistance R12 two ends pass through capacitor grounding respectively.
The difference for the level for needing to detect according to the key acquisition module 2, is that the key acquisition module 2 is configured with not
Same component
Fig. 7 is the circuit diagram that the key acquisition module that the utility model embodiment is provided gathers low level signal.3rd point
Piezoresistance R13 one end connection operating voltage, other end connection external key for gathering low level push button signalling, and leads to
The 4th divider resistance R14 is crossed to be connected with the input of processor 7；Be connected with processor 7 the one of the 4th divider resistance R14
End passes through resistance eutral grounding.
Fig. 8 is the circuit diagram that the key acquisition module that the utility model embodiment is provided gathers high level signal.4th point
Piezoresistance R14 one end connection external key, the push button signalling for gathering high level, and be connected with the input of processor 7；
The two ends of the 4th divider resistance R14 pass through resistance eutral grounding.
The present embodiment for steering wheel by adding heater circuit, and heater circuit sets processor, heating module, power management
Module, fault diagnosis module, LED drive module and temperature collect module, enable steering wheel to keep certain temperature in winter,
And possess LED light and show heated condition, whether detectable heater circuit the failures such as short circuit occurs.
Embodiment two
The present embodiment provides a kind of automobile, including steering wheel, and the steering wheel heater circuit that above-described embodiment is described.
Wherein, in the steering wheel heater circuit heating module and the temperature sensor of temperature collect module is placed in direction
The inner chamber of disk outer surface, is normally at the position that driver often grips.
When key acquisition module detects effective push button signalling, fault diagnosis module checks heating module with the presence or absence of short
The failures such as road, overvoltage, if so, not heating, driver is informed in the driving LED light flicker of processor indication LED drive module
Fault message；If it is not, heating module is begun to warm up, often bright sign heating is normal through row for LED.Temperature collect module passes through temperature
Sensor gathers current heating-up temperature, is contrasted with target temperature, when difference is more than preset value (such as 3 DEG C), heated mould
Block heating with full power, when difference is less than or equal to preset value, processor is adjusted to heating module through row PID, adjusts the work(of heating
Rate, makes the temperature of steering wheel finally stable in target temperature.
The steering wheel for the automobile that the present embodiment is provided can keep certain comfort temperature in cold winter, make driver
Driving experience more preferably, while being also prevented from that the hand of driver is stiff because of cold to cause that action is insensitive, can not flexibly answer
To emergency situations, it is ensured that driving safety.
Technical principle of the present utility model is described above in association with specific embodiment.These descriptions are intended merely to explain this reality
With new principle, and the limitation to the utility model protection domain can not be construed in any way.Based on explanation herein,
Those skilled in the art, which would not require any inventive effort, can associate other embodiments of the present utility model,
These modes are fallen within protection domain of the present utility model.
Claims (9)
1. a kind of steering wheel heater circuit, it is characterised in that including：Key acquisition module, processor, heating module, power supply pipe
Manage module, fault diagnosis module, LED drive module and temperature collect module；
The input of the key acquisition module is connected with external key, and output end is connected with processor, for gathering user's
Push button signalling is simultaneously sent to processor；
The input of the power management module is connected with vehicle power, and output end is connected by fault diagnosis module and heating module
Connect, for voltage stabilizing and voltage conversion；
The fault diagnosis module is connected with processor, heating module respectively, for when detecting fault, passing through processing
Device disconnects the power supply of heating module；
The LED drive module is connected with processor, under the control of the processor, according to the work of the heating module
Make situation, driving LED light is lighted or extinguished；
The temperature collect module, the temperature for gathering steering wheel；
The heating module, for being heated according to computer heating control instruction；
The processor, is connected with temperature collect module and heating module, for exporting computer heating control according to the temperature of steering wheel
Instruct to adjust the power of heating module.
2. steering wheel heater circuit according to claim 1, it is characterised in that the power management module includes：Transient state
Suppress diode, backward dioded and linear power supply conversion chip；
One end of the Transient Suppression Diode is connected with vehicle power, other end ground connection；
The positive pole of the backward dioded is connected with vehicle power, and the input of negative pole and the linear power supply conversion chip connects
Connect, and connected by the output end of resistance and processor；
The output end of the linear power supply conversion chip and key acquisition module, processor, fault diagnosis module, LED driving moulds
Block is connected with temperature collect module, for providing operating voltage.
3. steering wheel heater circuit according to claim 1, it is characterised in that the fault diagnosis module includes：
Flash driving chip, output end is connected with heating module, and input is connected with processor, the IS pins of flash driving chip
One end of connecting detection resistance, for judging whether the heating module is short-circuit by detecting the electric current of the detection resistance；
The other end ground connection of the detection resistance.
4. steering wheel heater circuit according to claim 2, it is characterised in that the LED drive module includes：One
PNP type triode and a NPN type triode；Wherein,
The emitter stage of the PNP type triode is referred to by first resistor cut-in operation voltage, colelctor electrode by second resistance with LED
Show that lamp is connected, export flash drive signal, base stage is connected by the 4th resistance with the colelctor electrode of the NPN type triode；And institute
The emitter stage for stating PNP type triode is connected with base stage by the 5th resistance；
The base stage of the NPN type triode is connected by the signal output part of 3rd resistor and processor, grounded emitter, and base
Pole is connected with emitter stage by the 6th resistance.
5. steering wheel heater circuit according to claim 2, it is characterised in that the LED drive module includes：One
PNP type triode and a NPN type triode；Wherein,
The emitter stage of the PNP type triode is connected with base stage by the 5th resistance, and base stage passes through the 4th resistance of series connection and
Seven resistance are connected with LED light, export low side drive signal, and be connected with the colelctor electrode of the NPN type triode；
The base stage of the NPN type triode is connected by the signal output part of 3rd resistor and processor, grounded emitter, and base
Pole is connected with emitter stage by the 6th resistance.
6. steering wheel heater circuit according to claim 2, it is characterised in that the temperature collect module includes：
First divider resistance, one end connection operating voltage, the other end connects temperature sensor and the second divider resistance respectively；
The other end of second divider resistance and the signal output part of processor are connected；
Temperature sensor is arranged on the steering wheel；
The two ends of second divider resistance pass through capacitor grounding respectively.
7. steering wheel heater circuit according to claim 2, it is characterised in that the key acquisition module includes：
3rd divider resistance, one end connection operating voltage, other end connection external key, for gathering low level button letter
Number, and connected by the input of the 4th divider resistance and processor；
One end being connected with processor of 4th divider resistance passes through resistance eutral grounding.
8. steering wheel heater circuit according to claim 2, it is characterised in that the key acquisition module includes：
4th divider resistance, one end connection external key, the push button signalling for gathering high level, and with the input of processor
Connection；
The two ends of 4th divider resistance pass through resistance eutral grounding.
9. a kind of automobile, including steering wheel, it is characterised in that also heated including the steering wheel described in claim any one of 1-8
Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720208441.XU CN206510956U (en) | 2017-03-06 | 2017-03-06 | A kind of steering wheel heater circuit and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720208441.XU CN206510956U (en) | 2017-03-06 | 2017-03-06 | A kind of steering wheel heater circuit and automobile |
Publications (1)
| Publication Number | Publication Date |
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| CN206510956U true CN206510956U (en) | 2017-09-22 |
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ID=59869814
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720208441.XU Active CN206510956U (en) | 2017-03-06 | 2017-03-06 | A kind of steering wheel heater circuit and automobile |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109178082A (en) * | 2018-08-21 | 2019-01-11 | 江铃控股有限公司 | Steering wheel heating control method and system |
| CN111086551A (en) * | 2019-11-26 | 2020-05-01 | 东方久乐汽车电子（上海）股份有限公司 | Steering wheel heating control method based on temperature closed-loop adjustment |
| CN111526608A (en) * | 2020-04-21 | 2020-08-11 | 天津暖曦科技有限公司 | Heating and human body induction shared circuit, steering wheel and automobile seat |
| CN112550188A (en) * | 2021-01-13 | 2021-03-26 | 江苏泰协智能科技有限公司 | Heating and vibration function guarantee system and working method thereof |
| CN113589866A (en) * | 2021-06-11 | 2021-11-02 | 浙江浙南机车业有限公司 | Handle heating control method |
-
2017
- 2017-03-06 CN CN201720208441.XU patent/CN206510956U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109178082A (en) * | 2018-08-21 | 2019-01-11 | 江铃控股有限公司 | Steering wheel heating control method and system |
| CN111086551A (en) * | 2019-11-26 | 2020-05-01 | 东方久乐汽车电子（上海）股份有限公司 | Steering wheel heating control method based on temperature closed-loop adjustment |
| CN111086551B (en) * | 2019-11-26 | 2022-05-13 | 东方久乐汽车电子（上海）股份有限公司 | Steering wheel heating control method based on temperature closed-loop adjustment |
| CN111526608A (en) * | 2020-04-21 | 2020-08-11 | 天津暖曦科技有限公司 | Heating and human body induction shared circuit, steering wheel and automobile seat |
| CN111526608B (en) * | 2020-04-21 | 2022-06-03 | 天津暖曦科技有限公司 | Heating and human body induction shared circuit, steering wheel and automobile seat |
| CN112550188A (en) * | 2021-01-13 | 2021-03-26 | 江苏泰协智能科技有限公司 | Heating and vibration function guarantee system and working method thereof |
| CN113589866A (en) * | 2021-06-11 | 2021-11-02 | 浙江浙南机车业有限公司 | Handle heating control method |
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