CN103569037A - Inductive key switch system and control method - Google Patents
Inductive key switch system and control method Download PDFInfo
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- CN103569037A CN103569037A CN201210257673.6A CN201210257673A CN103569037A CN 103569037 A CN103569037 A CN 103569037A CN 201210257673 A CN201210257673 A CN 201210257673A CN 103569037 A CN103569037 A CN 103569037A
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Abstract
The invention provides an inductive key switch system which comprises an ignition lock, a key matched with the ignition lock, a fastener, an induction device, an induction chip and a controller. A control method is further provided. The induction chip detects an excitation signal of the induction device and sends the signal to the controller, and the controller sends a control signal to the fastener. By means of the method, elastic plate deformation caused by over fatigue of mechanical key switch metal elastic plates or error signal triggering caused by the fact that contact face distance between the elastic plates is changed to exceed a safety distance is overcome. Only after the induction chip is completely matched with the induction device and a driver pulls out the key and gets off a car, automatic unlocking movement can be achieved, and malfunction caused by other abnormal operation can be prevented.
Description
Technical field
The present invention relates to electronic switching technology field, be specifically related to a kind of induction type key switch device and control method.
Background technology
Along with the high speed development of Chinese national economy, Automobile Market has obtained swift and violent growth.Along with the raising of automotive automation degree, the safety problem of automobile receives much concern.During due to automotive operation, speed, therefore in this process, if open because of carelessness car door by entail dangers to rider's life security, when vehicle is in traveling process, four can coupler lock, guarantees personnel's safety by bus.Work as vehicle stop, when driver extracts key, four git meeting automatic unlockings, convenient personnel by bus get off.
In Chinese patent literature CN2823469Y, a kind of inductive vehicle automatic door lock is disclosed, this inductive vehicle automatic door lock is at least provided with an induction installation in automobile, the output of induction installation connects respectively the input of automobile door lock controller and sash lock controller, in the power supply input circuit of this induction installation, is connected in series delay timer, master cock.The key switch of the prior art is mechanical contact switch, by the Plug Action of key, thereby the metal spring sheet realization in the inner slipper push key switch of ignition lock is switched on or switched off, when Automobile key is during at key hole, key switch disconnects, induction installation non-transformer is not worked, and inductive vehicle automatic door lock is not locked; When Automobile key is extracted, key switch is connected, and induction installation obtains electric, in induction car, whether has people, determines whether inductive vehicle automatic door lock locks.But mechanical contact switch, promotes its inner metal spring sheet frequently, the regular friction of inner slide block and metal spring sheet, can make metal spring sheet wearing and tearing, overtired and distortion, and this will affect reliability and the sensitivity of key switch.
The problems referred to above that exist in order to solve mechanical contact switch,, there is inductive switch in the development along with electromagnetic induction technology.As Chinese patent literature CN2907093Y discloses a kind of vehicle electronics inductive switch, comprise housing, for detection of magnetosensitive sensing element and the control circuit of change of magnetic field strength, magnetosensitive sensing element is connected with control circuit, magnetosensitive sensing element is arranged on the front end of housing, at contiguous magnetosensitive sensing element, place is provided with magnet, and the forearm of described housing is non-magnetic material.The prior art is the magnet near controller inside by outside magnet, utilize Hall element induced field to change the break-make of carrying out master cock, if this vehicle electronics inductive switch is used on automobile door lock, with respect to mechanical contact switch, there is good sensitieness and reliability, but, displacement between the magnet of external magnet and controller inside causes that the formed magnetic field of the magnet of controller inside power numerically cannot measure, can make the on off mode of master cock go wrong, in addition, electronic machine and current consumer in automobile are more, the electromagnetic radiation that these article produce also can produce and disturb magnet-sensitive element, the on off mode of master cock is gone wrong.
Summary of the invention
For this reason, to be solved by this invention is that existing vehicle electronics inductive switch poor anti jamming capability causes electronic switch to make mistakes, cannot be applied directly to the technical matters of automobile door lock, and a kind of antijamming capability is strong, reliability is high induction type key switch device and control method are provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A key switch device, comprises the key that is arranged on the ignition lock at driving engine place and coordinates with it, and is arranged on car door place for pinning the git of car door,
On described ignition lock, be provided with induction installation, for externally sending the pumping signal of predeterminated frequency;
In described key, be provided with induction chip, the pumping signal sending for responding to described induction installation, and external transmitted signal;
Also comprise controller, the signal sending for receiving described induction chip, and the external variable control signal of output state;
Described git is accepted the control signal of described controller, according to the state of described control signal, carries out and unblanks or block action.
A control method for described induction type key switch device, comprises the steps:
Described key inserts described ignition lock and opens after driving engine, automobile starting, and when automobile enters block action state, described controller transmits control signal to described git, and described git is carried out block action;
The described induction installation being arranged in described ignition lock is externally launched the pumping signal of a predeterminated frequency, within the scope of the actual induction of described induction chip at described induction installation, described induction chip receives the frequency of described pumping signal and described pumping signal when consistent with described induction chip predetermined frequency, and described induction chip sends locking holding signal to described controller; Described controller receives after described locking holding signal, exports the control signal identical with block action state to git, and git maintains blocking;
Described induction chip is not within the scope of the actual induction of described induction installation, described induction chip does not receive the pumping signal of described induction installation, described induction chip stops sending described locking holding signal to described controller, when described controller does not receive described locking holding signal, described controller is the control signal with block action opposite states to described git transmission, and described git is carried out auto-unlocking action.
Described control method, described induction installation is induction coil.
Described control method, described induction coil around cloth outside described ignition lock.
Described control method, the low frequency signal that described pumping signal is 30-100KHz.
Described control method, described locking holding signal is modulation signal.
Described control method, described control signal is high level and low level signal.
Described control method, locking when locking or the speed of a motor vehicle reach the locking speed of a motor vehicle when locking when described block action state comprises hand-operated brake, foot brake.
Described control method, described locking vehicle speed range is thousand ms/h of 20-25.
Technique scheme of the present invention has the following advantages compared to existing technology:
The invention provides a kind of induction type key switch device, comprise ignition lock, the key, git, induction installation, induction chip and the controller that coordinate with it; A kind of control method is provided simultaneously, and induction chip detects the pumping signal of induction installation, and induction chip sends a signal to controller, and controller transmits control signal to git.The method has overcome the overtired shell fragment distortion causing of mechanical type key switch metal spring sheet, or between shell fragment, contact surface, apart from changing, exceeds the false triggering signal that safety distance causes.And induction type key switch, only, after induction chip mates completely with induction installation, driver pulls key to get off and could realize the action of auto-unlocking, the misoperation that can prevent other abnormal operation to cause.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of a kind of induction type key switch device of one embodiment of the invention.
In figure, Reference numeral is expressed as: 10-key; 11-induction chip; 20-ignition lock; 21-induction coil; 3-controller; 4-git.
The specific embodiment
Embodiment:
Provide a concrete embodiment of a kind of induction type key switch device of the present invention below, shown in Figure 1, a kind of induction type key switch device, comprise the key 10 that is arranged on the ignition lock 20 at driving engine place and coordinates with it, and be arranged on car door place for pinning the git 4 of car door, on described ignition lock 20, be provided with induction installation, in the present embodiment, described induction installation is the induction coil 21 outside described ignition lock 20 around cloth, for externally sending the pumping signal that predeterminated frequency is 50KHz; On described key 10, be provided with induction chip 11, the pumping signal sending for responding to described induction installation, and external transmitted signal, said signal is sinewave modulation signal; Also comprise controller 3, the signal sending for receiving described induction chip 11, and the external variable control signal of output state, described control signal is herein high level and low level signal; Described git 4 is accepted the control signal of described controller 3, according to the state of described control signal, carries out and unblanks or block action.
As other embodiments, described induction coil 21 also can be in described ignition lock 20 inside around cloth; Described pumping signal is the low frequency signal between 30-100KHz.
The control method of described induction type key switch device, comprises the steps:
Described key 10 inserts described ignition lock 20 and opens after driving engine, automobile starting, when automobile enters block action state, described controller 3 sends low level control signal to described git 4, described git 4 is carried out block action, in the present embodiment, described block action state is speed of a motor vehicle locking when reaching 25,000 ms/h of the locking speed of a motor vehicle.
Induction coil 21 is not for being with power mode, the described induction coil 21 being arranged in described ignition lock 20 is externally launched the pumping signal of 50KHz, when described induction chip 11 is within the scope of the actual induction of described induction coil 21, the frequency that described induction chip 11 receives described pumping signal and described pumping signal and described induction chip 11 predetermined frequencies are when consistent, and described induction chip 11 sends locking holding signals to described controller 3; Described controller 3 receives after described locking holding signal, exports the low level control signal identical with block action state to git 4, and git 4 maintains blocking.
When described induction chip 11 is not within the scope of the actual induction of described induction coil 21, described induction chip 11 does not receive the pumping signal of described induction coil 21, described induction chip 11 stops sending described locking holding signal to described controller 3, when described controller 3 does not receive described locking holding signal, described controller 3 is the high-level control signal with block action opposite states to described git 4 transmissions, and described git 4 is carried out auto-unlockings action.
As other embodiments, described controller 3 sends high-level control signal to described git 4, and described git 4 is carried out block action; Described controller 3 receives after described locking holding signal, exports the high-level control signal identical with block action state to git 4, and git 4 maintains blocking; Described controller 3 is the low level control signal with block action opposite states to described git 4 transmissions, and described git 4 is carried out auto-unlockings action.
As other embodiments, induction coil 21 is band power mode, when described key 10 remains on described ignition lock 20 opening described in induction coil 21 just externally launch pumping signal; When described key 10 is extracted described ignition lock 20, described induction coil 21 power-off, externally do not launch pumping signal, described induction chip 11 does not receive the pumping signal of described induction coil 21, described induction chip 11 stops sending described locking holding signal to described controller 3, when described controller 3 does not receive described locking holding signal, described controller 3 is the control signal with block action opposite states to described git 4 transmissions, and described git 4 is carried out auto-unlockings action.
As other embodiments, described locking vehicle speed range is thousand ms/h of 20-25; Locking when locking or foot brake when described block action state also comprises hand-operated brake.
Induction chip in the invention, controller are hardware device of the prior art, and for example controller is the VA29 that Wenzhou Changjiang Automobile Electronic System Co., Ltd. produces, PCF7935 or PCF7936 that induction chip WeiNXP company or PHILIPS company produce.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And the apparent variation of being extended out thus or change are still among the protection domain in the invention.
Claims (9)
1. an induction type key switch device, comprises the key that is arranged on the ignition lock at driving engine place and coordinates with it, and is arranged on car door place for pinning the git of car door, it is characterized in that:
On described ignition lock, be provided with induction installation, for externally sending the pumping signal of predeterminated frequency;
In described key, be provided with induction chip, the pumping signal sending for responding to described induction installation, and external transmitted signal;
Also comprise controller, the signal sending for receiving described induction chip, and the external variable control signal of output state;
Described git is accepted the control signal of described controller, according to the state of described control signal, carries out and unblanks or block action.
2. right to use requires a control method for the induction type key switch device described in 1, it is characterized in that, comprises the steps:
Described key inserts described ignition lock and opens after driving engine, automobile starting, and when automobile enters block action state, described controller transmits control signal to described git, and described git is carried out block action;
The described induction installation being arranged in described ignition lock is externally launched the pumping signal of a predeterminated frequency, within the scope of the actual induction of described induction chip at described induction installation, described induction chip receives the frequency of described pumping signal and described pumping signal when consistent with described induction chip predetermined frequency, and described induction chip sends locking holding signal to described controller; Described controller receives after described locking holding signal, exports the control signal identical with block action state to git, and git maintains blocking;
Described induction chip is not within the scope of the actual induction of described induction installation, described induction chip does not receive the pumping signal of described induction installation, described induction chip stops sending described locking holding signal to described controller, when described controller does not receive described locking holding signal, described controller is the control signal with block action opposite states to described git transmission, and described git is carried out auto-unlocking action.
3. control method according to claim 2, is characterized in that: described induction installation is induction coil.
4. control method according to claim 3, is characterized in that: described induction coil around cloth outside described ignition lock.
5. according to the control method described in claim 1-4, it is characterized in that: the low frequency signal that described pumping signal is 30-100KHz.
6. control method according to claim 5, is characterized in that: described locking holding signal is modulation signal.
7. control method according to claim 6, is characterized in that: described control signal is high level and low level signal.
8. control method according to claim 7, is characterized in that: locking when locking or the speed of a motor vehicle reach the locking speed of a motor vehicle when locking when described block action state comprises hand-operated brake, foot brake.
9. control method according to claim 8, is characterized in that: described locking vehicle speed range is thousand ms/h of 20-25.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210257673.6A CN103569037B (en) | 2012-07-24 | 2012-07-24 | Inductive key switch system and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210257673.6A CN103569037B (en) | 2012-07-24 | 2012-07-24 | Inductive key switch system and control method |
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| CN103569037A true CN103569037A (en) | 2014-02-12 |
| CN103569037B CN103569037B (en) | 2017-05-24 |
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| CN201210257673.6A Active CN103569037B (en) | 2012-07-24 | 2012-07-24 | Inductive key switch system and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108482304A (en) * | 2018-03-29 | 2018-09-04 | 东风柳州汽车有限公司 | Alarms and security systems for automobiles and its control method |
| CN110136299A (en) * | 2018-02-02 | 2019-08-16 | 东洋建苍电机股份有限公司 | Control device with induction lock |
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| US5111902A (en) * | 1991-05-13 | 1992-05-12 | General Motors Corporation | Automatic power door lock system |
| JPH09112103A (en) * | 1995-10-19 | 1997-04-28 | Harness Sogo Gijutsu Kenkyusho:Kk | Vehicle door lock motor control device |
| JP3292039B2 (en) * | 1996-05-31 | 2002-06-17 | 日産自動車株式会社 | Vehicle door lock device |
| CN1471040A (en) * | 2002-06-21 | 2004-01-28 | 株式会社东海理化电机制作所 | Electronic key system |
| CN101211475A (en) * | 2006-12-28 | 2008-07-02 | 株式会社电装 | Electronic key system and method |
| CN201092784Y (en) * | 2007-08-08 | 2008-07-30 | 浙江吉利汽车研究院有限公司 | Device for automatically locking vehicle speed for automobile |
| CN202731486U (en) * | 2012-07-24 | 2013-02-13 | 浙江青年乘用车集团有限公司 | Induction type key switching system |
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2012
- 2012-07-24 CN CN201210257673.6A patent/CN103569037B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5111902A (en) * | 1991-05-13 | 1992-05-12 | General Motors Corporation | Automatic power door lock system |
| JPH09112103A (en) * | 1995-10-19 | 1997-04-28 | Harness Sogo Gijutsu Kenkyusho:Kk | Vehicle door lock motor control device |
| JP3292039B2 (en) * | 1996-05-31 | 2002-06-17 | 日産自動車株式会社 | Vehicle door lock device |
| CN1471040A (en) * | 2002-06-21 | 2004-01-28 | 株式会社东海理化电机制作所 | Electronic key system |
| CN101211475A (en) * | 2006-12-28 | 2008-07-02 | 株式会社电装 | Electronic key system and method |
| CN201092784Y (en) * | 2007-08-08 | 2008-07-30 | 浙江吉利汽车研究院有限公司 | Device for automatically locking vehicle speed for automobile |
| CN202731486U (en) * | 2012-07-24 | 2013-02-13 | 浙江青年乘用车集团有限公司 | Induction type key switching system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136299A (en) * | 2018-02-02 | 2019-08-16 | 东洋建苍电机股份有限公司 | Control device with induction lock |
| CN110136299B (en) * | 2018-02-02 | 2021-09-03 | 东洋建苍电机股份有限公司 | Control device with induction lock |
| CN108482304A (en) * | 2018-03-29 | 2018-09-04 | 东风柳州汽车有限公司 | Alarms and security systems for automobiles and its control method |
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| CN103569037B (en) | 2017-05-24 |
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