CN204631213U - The testing circuit of steering column for vehicles combined switch - Google Patents
The testing circuit of steering column for vehicles combined switch Download PDFInfo
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- CN204631213U CN204631213U CN201520142648.2U CN201520142648U CN204631213U CN 204631213 U CN204631213 U CN 204631213U CN 201520142648 U CN201520142648 U CN 201520142648U CN 204631213 U CN204631213 U CN 204631213U
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- power switch
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- 238000001514 detection method Methods 0.000 claims abstract description 19
- 230000007423 decrease Effects 0.000 abstract description 5
- 230000007257 malfunction Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The utility model discloses a kind of testing circuit of steering column for vehicles combined switch, its power switch one end is electrically connected out-put supply line respectively, the power switch other end is electrically connected corresponding switching branches respectively, output signal line is electrically connected with between power switch and switching branches, MCU unit comprises an ADC detection port and multiple pin, output signal line one end and ADC detection port are electrically connected, pin is electrically connected translator unit respectively, and the output terminal of translator unit is electrically connected the control end of power switch respectively.The utility model utilizes translator unit to receive high level or low level control signal by the pin of MCU unit, and convert to independently switch controlling signal to control unlatching or the closedown of power switch; Meanwhile, MCU unit, by the state of each switch in the input signal read switch branch road of ADC detection port, reduces circuit to the requirement of MCU unit, conveniently to MCU unit type selecting, decreases components and parts and take up room, save holistic cost.
Description
Technical field
The utility model relates to a kind of automotive steering switch circuit, especially relates to a kind of testing circuit of steering column for vehicles combined switch.
Background technology
At present, known steering column for cars switch is used to control front and back light, wiper switch and speed on car, turns to the switch combination of the equipment such as instruction, car running computer, bearing circle heating, this kind of switch combination is generally by there being tens, or even the switch composition that tens dissimilar; ADC (conversion of analog to digital signal) more than usual needs ten passage and the MCU (single-chip microcomputer) of corresponding configuration, detects different on off states and combined situation.Therefore, MCU needs more pin and the configuration of ADC passage, and usually need the MCU used containing 64 pins and 12 more than passage ADC, cost is higher.
Utility model content
Based on this, be necessary, for above-mentioned background technology Problems existing, to provide a kind of testing circuit of steering column for vehicles combined switch, reduce circuit to the requirement of MCU unit, conveniently to MCU unit type selecting, decrease components and parts and take up room, save holistic cost.
For achieving the above object, the utility model discloses a kind of testing circuit of steering column for vehicles combined switch, it comprises MCU unit, translator unit, multiple power switch and multiple switching branches, described power electric source switch one end is electrically connected out-put supply line respectively, the described power switch other end is electrically connected corresponding switching branches respectively, output signal line is electrically connected with between described power switch and switching branches, described MCU unit comprises an ADC detection port and multiple pin, described output signal line one end and ADC detection port are electrically connected, described pin is electrically connected described translator unit respectively, the output terminal of described translator unit is electrically connected the control end of power switch respectively.
Wherein in an embodiment, also comprise multiple diode, described diode is electrically connected between described output signal line and switching branches.
Wherein in an embodiment, described translator unit is the code translator of 74HC138 model.
Wherein in an embodiment, described out-put supply line supply voltage is 5 ~ 24V.
In sum, the testing circuit of the utility model steering column for vehicles combined switch arranges translator unit and MCU unit is electrically connected, translator unit receives high level or low level control signal by the pin of MCU unit, and convert to independently switch controlling signal to control unlatching or the closedown of power switch; Meanwhile, MCU unit passes through state and the malfunction of each switch in the input signal read switch branch road of ADC detection port, reduces circuit to the requirement of MCU unit, conveniently to MCU unit type selecting, decreases components and parts and take up room, save holistic cost.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of embodiment of testing circuit of the utility model steering column for vehicles combined switch.
Embodiment
As shown in Figure 1, the testing circuit of the utility model steering column for vehicles combined switch comprises MCU unit 10, translator unit 20, multiple power switch 30, multiple diode 40 and multiple switching branches 50, described power electric source switch 30 one end is electrically connected out-put supply line 60 respectively, described power switch 30 other end is electrically connected corresponding switching branches 50 respectively, output signal line 70 is electrically connected with between described power switch 30 and switching branches 50, described MCU unit 10 comprises an ADC detection port 11 and multiple pin one 2, described output signal line 70 one end and ADC detection port 11 are electrically connected, described pin one 2 is electrically connected described translator unit 20 respectively, the output terminal of described translator unit 20 is electrically connected the control end of power switch 30 respectively, described MCU unit 10 sends high level or low level control signal, described translator unit 20 receives high level or low level control signal by the pin one 2 of MCU unit 10, and convert high level or low level control signal to independently switch controlling signal, and then control unlatching or the closedown of power switch 30.
Particularly, described diode 40 is electrically connected between described output signal line 70 and switching branches 50, the output signal of described switching branches 50 is input to the ADC detection port 11 of MCU unit 10 respectively by diode 40, and then MCU unit 10 is by the state of each switch in the input signal read switch branch road 50 of ADC detection port 11.
Wherein in an embodiment, described translator unit 20 is code translator or other programmable logic device (CPLD)s (Complex Programable Logic Device, Complex PLD) of 74HC138 model.
Wherein in an embodiment, described out-put supply line supply voltage is 5 ~ 24V.
During the utility model specific works, the output level that MCU unit 10 controls pin 12 realizes carrying out scanning switch branch road 50 to the unlatching one by one of power switch 30, and then the signal of corresponding switching branches 50 is detected, the output signal of switching branches 50 is sent to ADC detection port 11, MCU unit 10 by output signal line 70 and then reads the state driving each switch in Heavenly Stems and Earthly Branches road; Particularly, if the voltage detected is 0V, switching branches 50 shorted to earth is described, if the voltage of out-put supply line 60 detected, the short circuit of switching branches 50 pairs of out-put supply lines 60 is described, detected by the fault of MCU unit 10 pairs of switching branches 50, the harmful effect because wrong maloperation causes can be avoided.
Particularly, suppose that MCU unit is provided with N number of pin and an ADC detection port, then MCU unit can detect the Nth power passage of 2, with the ADC detection port of Nth power passage needing 2 in traditional circuit, save the resource requirement of MCU unit greatly, the MCU of less pin can be used to complete identical function; For typical 16 way switch branch roads, the ADC detection port needing 16 passages in traditional circuit and the MCU unit matched, i.e. 16 ADC detection port and 1 pin; Adopt the utility model, only need 1 ADC detection port and 4 pins to realize, significantly reduce the requirement of circuit to MCU unit, conveniently to MCU unit type selecting, decrease components and parts and take up room, save holistic cost.
In sum, the testing circuit of the utility model steering column for vehicles combined switch arranges translator unit 20 and is electrically connected with MCU unit 10, translator unit 20 receives high level or low level control signal by the pin one 2 of MCU unit 10, and convert to independently switch controlling signal to control unlatching or the closedown of power switch 30; Simultaneously, MCU unit 10 passes through state and the malfunction of each switch in the input signal read switch branch road 50 of ADC detection port 11, reduces circuit to the requirement of MCU unit 10, convenient to MCU unit 10 type selecting, decrease components and parts to take up room, save holistic cost.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (4)
1. the testing circuit of a steering column for vehicles combined switch, it is characterized in that: comprise MCU unit, translator unit, multiple power switch and multiple switching branches, described power electric source switch one end is electrically connected out-put supply line respectively, the described power switch other end is electrically connected corresponding switching branches respectively, output signal line is electrically connected with between described power switch and switching branches, described MCU unit comprises an ADC detection port and multiple pin, described output signal line one end and ADC detection port are electrically connected, described pin is electrically connected described translator unit respectively, the output terminal of described translator unit is electrically connected the control end of power switch respectively.
2. the testing circuit of steering column for vehicles combined switch according to claim 1, it is characterized in that: also comprise multiple diode, described diode is electrically connected between described output signal line and switching branches.
3. the testing circuit of steering column for vehicles combined switch according to claim 1 and 2, is characterized in that: described translator unit is the code translator of 74HC138 model.
4. the testing circuit of steering column for vehicles combined switch according to claim 1 and 2, is characterized in that: described out-put supply line supply voltage is 5 ~ 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520142648.2U CN204631213U (en) | 2015-03-12 | 2015-03-12 | The testing circuit of steering column for vehicles combined switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520142648.2U CN204631213U (en) | 2015-03-12 | 2015-03-12 | The testing circuit of steering column for vehicles combined switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204631213U true CN204631213U (en) | 2015-09-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520142648.2U Expired - Fee Related CN204631213U (en) | 2015-03-12 | 2015-03-12 | The testing circuit of steering column for vehicles combined switch |
Country Status (1)
| Country | Link |
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| CN (1) | CN204631213U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020006696A1 (en) * | 2018-07-04 | 2020-01-09 | 深圳市锐明技术股份有限公司 | Adc-based detection circuit, and microprocessor-based detection circuit |
| CN110785671A (en) * | 2017-06-23 | 2020-02-11 | 法雷奥开关和传感器有限责任公司 | Circuit arrangement for evaluating at least two switching states of an actuating element, method for operating a circuit arrangement and switching device |
-
2015
- 2015-03-12 CN CN201520142648.2U patent/CN204631213U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110785671A (en) * | 2017-06-23 | 2020-02-11 | 法雷奥开关和传感器有限责任公司 | Circuit arrangement for evaluating at least two switching states of an actuating element, method for operating a circuit arrangement and switching device |
| CN110785671B (en) * | 2017-06-23 | 2022-02-18 | 法雷奥开关和传感器有限责任公司 | Circuit arrangement, method for operating a circuit arrangement and switching device |
| WO2020006696A1 (en) * | 2018-07-04 | 2020-01-09 | 深圳市锐明技术股份有限公司 | Adc-based detection circuit, and microprocessor-based detection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170420 Address after: 200000 Shanghai City, Jiading District Hui Yin Road No. 338 building 3 Patentee after: VALEO INTERIOR CONTROLS (SHANGHAI) CO.,LTD. Address before: Baoan District Fuyong Huaide village in Shenzhen city of Guangdong province Cuigang 518103 District Six building Fourth North Junyi Industrial Park Patentee before: VALEO INTERIOR CONTROLS (SHENZHEN) Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |