CN201951385U - Safety airbag indicator light circuit with diagnosis function - Google Patents

Safety airbag indicator light circuit with diagnosis function Download PDF

Info

Publication number
CN201951385U
CN201951385U CN2011200008132U CN201120000813U CN201951385U CN 201951385 U CN201951385 U CN 201951385U CN 2011200008132 U CN2011200008132 U CN 2011200008132U CN 201120000813 U CN201120000813 U CN 201120000813U CN 201951385 U CN201951385 U CN 201951385U
Authority
CN
China
Prior art keywords
light
emitting diode
air bag
diagnosis
indicator light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011200008132U
Other languages
Chinese (zh)
Inventor
金红光
毛招凤
杨国斌
杨安志
李书福
杨健
赵福全
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
Original Assignee
Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Geely Holding Group Co Ltd, Zhejiang Geely Automobile Research Institute Co Ltd filed Critical Zhejiang Geely Holding Group Co Ltd
Priority to CN2011200008132U priority Critical patent/CN201951385U/en
Application granted granted Critical
Publication of CN201951385U publication Critical patent/CN201951385U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Air Bags (AREA)

Abstract

The utility model discloses a safety airbag indicator light circuit with a diagnosis function, which aims at solving the technical problem in the prior art that the existing safety airbag indicator light circuit does not detect the disconnection state of an safety airbag, and provides a safety airbag indicator light circuit with the diagnosis function, comprising a safety airbag ECU, an ignition power supply, a light-emitting diode (LED), a current-limiting resistor and a diagnosis resistor, wherein the anode of the LED is connected with the ignition power supply, the cathode of the LED is connected with one end of the current-limiting resistor, the other end of the current-limiting resistor is respectively connected with the safety airbag ECU and the diagnosis resistor, and the other end of the diagnosis resistor is connected with a power supply.

Description

Safety air bag indicator light circuit with diagnosis function
Technical field
The utility model relates to automotive field, relates in particular to a kind of drive circuit of indicator that is used for showing on the automobile instrument panel safety air bag coupled condition.
Background technology
Safety air bag is the important component part of automotive safety, and relevant air bag system structure and control thereof can be from open day being that March 30, publication number in 2005 are the 1600604A and the day for announcing to be that April 23, notification number in 2008 are to know the patent documentation such as CN201051317Y.The control logic of safety air bag indicator light circuit is to adopt the low level effective and efficient manner in traditional combination instrument, therefore indicator light circuit can only show the working condition after safety air bag connects, to safety air bag be disconnected be connected after high level state can not be distinguished and be detected.Yet the connection of guaranteeing safety air bag is the important assurance of driver safety.
Summary of the invention
The utility model mainly is to solve the technical matters that existing in prior technology safety air bag indicator light circuit does not detect the safety air bag not-connected status, and a kind of safety air bag indicator light circuit with diagnosis function is provided.
The utility model is mainly solved by following technical proposals at the prior art problem, a kind of safety air bag indicator light circuit with diagnosis function, comprise safety airbag ECU, priming supply, also comprise light-emitting diode, current-limiting resistance, diagnosis resistance, the anodal point of connection ignition source of described light-emitting diode, the light-emitting diode negative pole connects an end of current-limiting resistance, and the other end of current-limiting resistance is attachment security air bag ECU, diagnosis resistance respectively, and the other end of diagnosis resistance connects power ground.The control logic of traditional safety air bag indicator light circuit is the low level effective means, the safety air bag indicator light circuit control logic of this programme is the effective and unsettled effective and efficient manner of low level, behind the cut-in point ignition source, if safety airbag ECU output low level signal, priming supply is by light-emitting diode and current-limiting resistance and safety airbag ECU output/input end formation loop, and light-emitting diode is bright; When safety airbag ECU is not connected to circuit, priming supply constitutes the loop by light-emitting diode, current-limiting resistance, diagnosis resistance, power supply ground, light-emitting diode is bright, because the effect of diagnosis resistance, electric current when this moment, current in loop was than the safety airbag ECU output low level is little, the brightness of light-emitting diode is just low, therefore, safety airbag ECU output low level state can be connected with safety airbag ECU from light-emitting diode luminance and be distinguished; When safety air bag is in normal condition, safety airbag ECU output high level signal, making the light-emitting diode terminal voltage is zero, light-emitting diode does not work.
As preferably, also comprise the protection diode, the protection diode is serially connected between described light-emitting diode and the priming supply, and the protection diode cathode connects the light-emitting diode positive pole, protection diode cathode point of connection ignition source.The protection diode can prevent from when in a single day the output voltage of safety airbag ECU is higher than priming supply voltage deleterious current to take place and damage ECU.
As preferably, protect diode by ignition lock point of connection ignition source.Make priming supply after igniting, be connected to circuit of LED, to be fit to light-emitting diode as the use habit of safety air bag indicator lamp on gauge panel.
As preferably, also comprise shunt resistance, shunt resistance is in parallel with light-emitting diode.For preventing that overcurrent from appearring in light-emitting diode, light-emitting diode is carried out divided current by the shunt resistance of selecting suitable resistance.
As preferably, light-emitting diode is coloured light-emitting diode.The visible light colors of light-emitting diode is selected as required.
The beneficial effect that the utility model brings is, can effectively detect the off line state of safety air bag, in time reminds driver and crew's trouble-shooting, improves vehicle safety; Circuit is succinct, easy for installation, with low cost.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model;
Fig. 2 is a preferred schematic diagram of the present utility model.
Among the figure: D1 is a light-emitting diode, and D2 is the protection diode, and R1 is a shunt diode, and R2 is the current limliting diode, and R3 is a diagnosis resistance.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is further described in detail.
Embodiment: as shown in Figure 1, a kind of safety air bag indicator light circuit with diagnosis function, comprise safety airbag ECU, priming supply, also comprise light-emitting diode D1, current-limiting resistance R2, diagnosis resistance R 3, the anodal point of connection ignition source of light-emitting diode D1, light-emitting diode D1 negative pole connects the end of current-limiting resistance R2, and the other end of current-limiting resistance R2 is attachment security air bag ECU, diagnosis resistance R 3 respectively, and the other end of diagnosis resistance R 3 connects power ground.When safety air bag connected, priming supply, D1, R2, safety airbag ECU output/input end constituted current return, and during the safety airbag ECU outgoing level, D1 is bright; When safety air bag did not connect, priming supply, D1, R2, R3, ground wire constituted current return, and D1 is bright.
As shown in Figure 2, it is preferred schematic diagram of the present utility model, shunt resistance R1 is in parallel with light-emitting diode D1, makes the D1 maximum current limit in allowed band, also makes current-limiting resistance R2 resistance that big choice is arranged when carrying out the dividing potential drop apolegamy with diagnosis resistance R 3 simultaneously; The access of ignition lock conducting contact is more suitable for light-emitting diode D1 as the use habit of indicator lamp on gauge panel, and promptly the vehicle ignition rear indicator light is started working.
So the utlity model has the off line state that can effectively detect safety air bag, in time remind driver and crew's trouble-shooting, improve features such as vehicle safety and circuit be succinct, easy for installation, with low cost.

Claims (5)

1. safety air bag indicator light circuit with diagnosis function, comprise safety airbag ECU, priming supply, it is characterized in that: also comprise light-emitting diode, current-limiting resistance, diagnosis resistance, the anodal point of connection ignition source of described light-emitting diode, the light-emitting diode negative pole connects an end of current-limiting resistance, the other end of current-limiting resistance is attachment security air bag ECU, diagnosis resistance respectively, and the other end of diagnosis resistance connects power ground.
2. according to the described safety air bag indicator light circuit of claim 1 with diagnosis function; it is characterized in that: also comprise the protection diode; described protection diode is serially connected between described light-emitting diode and the priming supply; described protection diode cathode connects the light-emitting diode positive pole, protection diode cathode point of connection ignition source.
3. according to claim 1 or 2 described safety air bag indicator light circuits with diagnosis function, it is characterized in that: described protection diode is by ignition lock point of connection ignition source.
4. according to the described safety air bag indicator light circuit with diagnosis function of claim 1, it is characterized in that: also comprise shunt resistance, described shunt resistance is in parallel with light-emitting diode.
5. according to the described safety air bag indicator light circuit with diagnosis function of claim 1, it is characterized in that: described light-emitting diode is coloured light-emitting diode.
CN2011200008132U 2011-01-04 2011-01-04 Safety airbag indicator light circuit with diagnosis function Expired - Fee Related CN201951385U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200008132U CN201951385U (en) 2011-01-04 2011-01-04 Safety airbag indicator light circuit with diagnosis function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200008132U CN201951385U (en) 2011-01-04 2011-01-04 Safety airbag indicator light circuit with diagnosis function

Publications (1)

Publication Number Publication Date
CN201951385U true CN201951385U (en) 2011-08-31

Family

ID=44495510

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011200008132U Expired - Fee Related CN201951385U (en) 2011-01-04 2011-01-04 Safety airbag indicator light circuit with diagnosis function

Country Status (1)

Country Link
CN (1) CN201951385U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103472407A (en) * 2013-09-23 2013-12-25 迈普通信技术股份有限公司 Dual-power state detection circuit, power supply system and dual-power state detection method
CN104228737A (en) * 2013-06-18 2014-12-24 沃尔沃汽车公司 Arrangement, vehicle and method for control of vehicle-airbag-status display

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104228737A (en) * 2013-06-18 2014-12-24 沃尔沃汽车公司 Arrangement, vehicle and method for control of vehicle-airbag-status display
CN104228737B (en) * 2013-06-18 2019-02-19 沃尔沃汽车公司 For controlling equipment, vehicle and the method for vehicle airbag status display
CN103472407A (en) * 2013-09-23 2013-12-25 迈普通信技术股份有限公司 Dual-power state detection circuit, power supply system and dual-power state detection method

Similar Documents

Publication Publication Date Title
CN205584565U (en) Can driving light between LED day of self -checking
CN201951385U (en) Safety airbag indicator light circuit with diagnosis function
CN203511454U (en) Rapid-replacing type electric vehicle and battery box unlocking alarm system thereof
CN201863768U (en) Locomotive car light fault monitoring and warning system
CN203535108U (en) Storage battery voltage detecting circuit
CN201322788Y (en) Charging and monitoring circuit of storage battery
CN204383288U (en) A kind of fog lamp drives and observation circuit
CN201263012Y (en) Voltage indicating circuit device for power socket converter
CN2905538Y (en) Electric safety protection device for hybrid power electric vehicle
CN101407233B (en) Charging monitoring instrument for motor vehicle accumulator
CN201146626Y (en) Device for monitoring signal lamp circuit of motor vehicle
CN201243394Y (en) Control circuit of LED device
CN201562338U (en) Light induction monitoring and alarming device
CN200973012Y (en) DC low voltage distributor
CN205890693U (en) Turn to warning flashing amber
CN203402058U (en) Automobile meter alarm lamp circuit and automobile
CN213298171U (en) Igniter with indication function for motorcycle
CN202815196U (en) Power supply power quantity monitoring system
CN204712952U (en) LED brake lights failure positioner
CN217739427U (en) Car light experimental circuit with automatic protection function
CN202854266U (en) Short-circuit indicator for main transformer secondary side of electric locomotive
CN210155304U (en) Vehicle standby power supply interface detection device
CN113291231B (en) Running water lamp control system
CN201803248U (en) Retarder signal lamp indicating mechanism
CN206260110U (en) A kind of LED lane change auxiliary lamp modules with overvoltage protection

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP02 Change in the address of a patent holder

Address after: Taizhou City, Zhejiang Province, 317000 coastal city east gate head

Co-patentee after: Zhejiang Geely Holding Group Co., Ltd.

Patentee after: Zhejiang Geely Automobile Research Institute Co., Ltd.

Address before: 311228, No. 188, Century Avenue, Linjiang Industrial Park, Xiaoshan District, Zhejiang, Hangzhou

Co-patentee before: Zhejiang Geely Holding Group Co., Ltd.

Patentee before: Zhejiang Geely Automobile Research Institute Co., Ltd.

EE01 Entry into force of recordation of patent licensing contract

Assignee: Plateau, Chengdu auto industry company limited

Assignor: Zhejiang Geely Automobile Research Institute Co., Ltd., Zhejiang Geely Holding Group Company Limited

Contract record no.: 2012330000037

Denomination of utility model: Safety airbag indicator light circuit with diagnosis function

Granted publication date: 20110831

License type: Exclusive License

Record date: 20120229

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110831

Termination date: 20140104