CN103569037B - Inductive key switch system and control method - Google Patents
Inductive key switch system and control method Download PDFInfo
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- CN103569037B CN103569037B CN201210257673.6A CN201210257673A CN103569037B CN 103569037 B CN103569037 B CN 103569037B CN 201210257673 A CN201210257673 A CN 201210257673A CN 103569037 B CN103569037 B CN 103569037B
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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, and in particular to a kind of induction type key switch device and control method.
Background technology
With the high speed development of Chinese national economy, Automobile Market has obtained swift and violent growth.As automobile is automatic
The raising of change degree, the safety problem of automobile receives much concern.During due to automobilism, speed, in the process, if not
, by the life security of entail dangers to rider, therefore when vehicle is during traveling, four can automatic blocking, guarantor for careful car door of opening
Demonstrate,prove the safety of passenger.When vehicle stops, and driver extracts key, four dead lock meeting automatic unlockings facilitate passenger
Get off.
In Chinese patent literature CN2823469Y, a kind of inductive vehicle automatic door lock is disclosed, this inductive vehicle is certainly
At least provided with an induction installation in automobile, the output of induction installation connects automobile door lock controller and sash lock control to dynamic door lock respectively
The input of device processed, concatenates delayer, controlling switch in the power input circuit of the induction installation.The key switch of the prior art
It is mechanical contact switch, by the Plug Action of key so that the metal elastic in the slipper push key switch of ignition lock inside
So as to realize being switched on or switched off, when automobile car key is in keyhole, key switch disconnects piece, induction installation non-transformer not work
Make, inductive vehicle automatic door lock is not locked；When automobile car key is extracted, key switch is connected, and induction installation obtains electric, senses car
Inside whether someone, determine whether inductive vehicle automatic door lock locks.But mechanical contact switch, the gold for frequently promoting it internal
Category shell fragment, internal sliding block and the frequent frottage of metal clips can make metal clips wear and tear, fatigue and deformation, and this is by shadow
Ring reliability and the sensitivity of key switch.
In order to solve the above mentioned problem of mechanical contact switch presence, with the development of electromagnetic induction technology, sense is occurred in that
Formula is answered to switch.As Chinese patent literature CN2907093Y discloses a kind of automotive electronics inductive switch, including housing, for detecting
The magnetosensitive sensing element and control circuit of change of magnetic field strength, magnetosensitive sensing element are connected with control circuit, magnetosensitive sensing element
The front end of housing is arranged on, magnet is provided with neighbouring magnetosensitive sensing element, the forearm of the housing is non-magnetic material.Should
Magnet of the prior art by outside magnet inside controller, using the change of Hall element induced field come controlling switch
Break-make, if by the automotive electronics inductive switch with automobile door lock, relative to mechanical contact switch, with preferable
Sensitivity and reliability, but, the displacement between magnet inside external magnet and controller causes the magnet inside controller
The magnetic field power for being formed cannot numerically be measured, and the on off operating mode of controlling switch can be made to go wrong, in addition, in automobile
Electronic equipment and electrical appliance are more, and the electromagnetic radiation that these articles are produced also can produce interference to magnet-sensitive element, open control
The on off operating mode of pass goes wrong.
The content of the invention
Therefore, to be solved by this invention is that existing automotive electronics inductive switch poor anti jamming capability causes electronic switch to go out
Mistake, the technical problem that automobile door lock cannot be applied directly to, there is provided a kind of strong antijamming capability, reliability induction type key high
Spoon switching system and control method.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
A kind of induction type key switch device, including ignition lock and key matched at engine are arranged on, with
And be arranged at car door and be used to pin the dead lock of car door,
Induction installation is provided with the ignition lock, the pumping signal for externally sending predeterminated frequency；
Induction chip is provided with the key, for sensing the pumping signal that the induction installation sends, and to outgoing
The number of delivering letters；
Also include controller, for receiving the signal that the induction chip sends, and the externally variable control of output state
Signal；
The dead lock receives the control signal of the controller, and the state according to the control signal is performed unlocks or close
Lock is acted.
A kind of control method using described induction type key switch device, comprises the following steps：
After the key inserts the ignition lock and opens engine, automobile starting, when automobile enters block action state
When, the controller sends control signal to the dead lock, and the dead lock performs block action；
The induction installation in the ignition lock is arranged to one pumping signal of predeterminated frequency of emission, when described
In the range of the actual induction of the induction installation, the induction chip receives the pumping signal and described to induction chip
When the frequency of pumping signal is consistent with the induction chip predetermined frequency, the induction chip sends locking and protects to the controller
Hold signal；The controller is received after the locking keeps signal, export with block action state identical control signal to
Dead lock, dead lock maintains blocking；
Not in the range of the actual induction of the induction installation, the induction chip does not receive described the induction chip
The pumping signal of induction installation, the induction chip stops sending the locking holding signal, the control to the controller
When device does not receive the locking holding signal, the controller sends the control opposite with block action state to the dead lock
Signal processed, the dead lock performs auto-unlocking action.
Described control method, the induction installation is induction coil.
Described control method, the induction coil is around cloth outside the ignition lock.
Described control method, the pumping signal is the low frequency signal of 30-100KHz.
Described control method, it is modulated signal that the locking keeps signal.
Described control method, the control signal is high level and low level signal.
Described control method, the block action state includes locking or speed when locking, foot brake during hand-operated brake
Locking when reaching locking speed.
Described control method, the locking vehicle speed range is thousand ms/h of 20-25.
Above-mentioned technical proposal of the invention has advantages below compared to existing technology：
The present invention provides a kind of induction type key switch device, including ignition lock, key matched, dead lock, sense
Answer device, induction chip and controller；A kind of control method is provided simultaneously, and induction chip detects the excitation letter of induction installation
Number, induction chip sends a signal to controller, and controller sends control signal to dead lock.The method overcome mechanical key
Caused by the fatigue of switch-mode metal shell fragment shell fragment deformation, or between shell fragment contact surface distance change, beyond safety away from
Signaled from caused false touch.And induction type key switch, only after induction chip is matched completely with induction installation, driver
Pull key to get off and could realize the action of auto-unlocking, misoperation caused by other abnormal operations can be prevented.
Brief description of the drawings
In order that present disclosure is more likely to be clearly understood, below according to specific embodiment of the invention and combine
Accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is a kind of structural representation of induction type key switch device of one embodiment of the invention.
Reference is expressed as in figure：10- keys；11- induction chips；20- ignition locks；21- induction coils；3- is controlled
Device；4- dead locks.
Specific embodiment
Embodiment：
An a kind of specific embodiment of induction type key switch device of the present invention is given below, referring to figure
Shown in 1, a kind of induction type key switch device, including ignition lock 20 and key matched 10 at engine are arranged on,
And the dead lock 4 for pinning car door is arranged at car door, induction installation, the present embodiment are provided with the ignition lock 20
In, the induction installation is the induction coil 21 outside the ignition lock 20 around cloth, is 50KHz for externally sending predeterminated frequency
Pumping signal；Induction chip 11 is provided with the key 10, for sensing the pumping signal that the induction installation sends, and
External sending signal, said signal is sinewave modulation signal；Also include controller 3, for receiving the induction chip
11 signals for sending, and the externally variable control signal of output state, the control signal herein is high level and low level
Signal；The dead lock 4 receives the control signal of the controller 3, and the state according to the control signal is performed unlocks or close
Lock is acted.
Used as other embodiment, the induction coil 21 can also be inside the ignition lock 20 around cloth；The excitation
Signal is the low frequency signal between 30-100KHz.
The control method of described induction type key switch device, comprises the following steps：
After the key 10 inserts the ignition lock 20 and opens engine, automobile starting, when automobile enters block action
During state, the controller 3 sends low level control signal to the dead lock 4, and the dead lock 4 performs block action, this
In embodiment, the block action state is locking when speed reaches 25,000 ms/h of locking speed.
Induction coil 21 is, without power mode, to be arranged at the induction coil 21 in the ignition lock 20 to emission
The pumping signal of 50KHz, when the induction chip 11 is in the range of the actual induction of the induction coil 21, the induction chip
11 receive the pumping signal and when the frequency of the pumping signal is consistent with the predetermined frequency of the induction chip 11, described
Induction chip 11 sends locking and keeps signal to the controller 3；After the controller 3 receives the locking holding signal,
Export with block action state identical low level control signal to dead lock 4, dead lock 4 maintains blocking.
When the induction chip 11 is not in the range of the actual induction of the induction coil 21, the induction chip 11 is received
Less than the pumping signal of the induction coil 21, the induction chip 11 stops sending the locking holding to the controller 3
Signal, when the controller 3 does not receive the locking holding signal, the controller 3 sends and locking to the dead lock 4
The opposite high-level control signal of operating state, the dead lock 4 performs auto-unlocking action.
Used as other embodiment, the controller 3 sends high-level control signal, the locking to the dead lock 4
Device 4 performs block action；After the controller 3 receives the locking holding signal, export and block action state identical
High-level control signal maintains blocking to dead lock 4, dead lock 4；The controller 3 sends and closes to the dead lock 4
The opposite low level control signal of lock operating state, the dead lock 4 performs auto-unlocking action.
Used as other embodiment, induction coil 21 is band power mode, and the key 10 is maintained at the ignition lock 20 and opens
The ability of the induction coil 21 is opened during state to emission pumping signal；When the key 10 extracts the ignition lock 20, the sense
Coil 21 is answered to power off, not to emission pumping signal, the induction chip 11 does not receive the excitation letter of the induction coil 21
Number, the induction chip 11 stops sending the locking holding signal to the controller 3, and the controller 3 does not receive institute
When stating locking holding signal, the controller 3 sends the control signal opposite with block action state, institute to the dead lock 4
State dead lock 4 and perform auto-unlocking action.
Used as other embodiment, the locking vehicle speed range is thousand ms/h of 20-25；The block action state is also
Locking or locking during foot brake during including hand-operated brake.
Induction chip, controller in the invention are hardware device of the prior art, and such as controller is Wenzhou
The VA29 of the Changjiang river automotive electronics Co., Ltd production, induction chip be the PCF7935 that NXP companies or PHILIPS companies produce or
PCF7936。
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of implementation method.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need and unable to be exhaustive to all of implementation method.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (8)
1. a kind of control method of induction type key switch device, the induction type key switch device includes being arranged on engine
The ignition lock and key matched at place, and the dead lock for pinning car door is arranged at car door, on the ignition lock
Induction installation is provided with, the pumping signal for externally sending predeterminated frequency；Induction chip is provided with the key, for feeling
The pumping signal for answering the induction installation to send, and externally sending signal；
Also include controller, for receiving the signal that the induction chip sends, and the externally variable control signal of output state；
The dead lock receives the control signal of the controller, and the state according to the control signal is performed unlocks or block action；
Characterized in that, methods described comprises the following steps：
After the key inserts the ignition lock and opens engine, automobile starting, when automobile enters block action state, institute
State controller and send control signal to the dead lock, the dead lock performs block action；
The induction installation in the ignition lock is arranged to one pumping signal of predeterminated frequency of emission, when the sensing
In the range of the actual induction of the induction installation, the induction chip receives the pumping signal and the excitation to chip
When the frequency of signal is consistent with the induction chip predetermined frequency, the induction chip sends locking and keeps letter to the controller
Number；After the controller receives the locking holding signal, export with block action state identical control signal to locking
Device, dead lock maintains blocking；
Not in the range of the actual induction of the induction installation, the induction chip does not receive the sensing to the induction chip
The pumping signal of device, the induction chip stops sending the locking holding signal to the controller, and the controller connects
When can not receive the locking holding signal, the controller sends the control opposite with block action state to the dead lock to be believed
Number, the dead lock performs auto-unlocking action.
2. control method according to claim 1, it is characterised in that：The induction installation is induction coil.
3. control method according to claim 2, it is characterised in that：The induction coil is around cloth outside the ignition lock.
4. the control method according to claim 1 or 2 or 3 any one, it is characterised in that：The pumping signal is 30-
The low frequency signal of 100KHz.
5. control method according to claim 4, it is characterised in that：The locking keeps signal to adjust
Signal processed.
6. control method according to claim 5, it is characterised in that：The control signal is that high level and low level are believed
Number.
7. control method according to claim 6, it is characterised in that：The block action state includes being closed during hand-operated brake
Locking when locking or speed reach locking speed when lock, foot brake.
8. the control method according to claim 7, it is characterised in that：The locking vehicle speed range is 20-25 kms/small
When.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210257673.6A CN103569037B (en) | 2012-07-24 | 2012-07-24 | Inductive key switch system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210257673.6A CN103569037B (en) | 2012-07-24 | 2012-07-24 | Inductive key switch system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103569037A CN103569037A (en) | 2014-02-12 |
| CN103569037B true CN103569037B (en) | 2017-05-24 |
Family
ID=50041996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210257673.6A Active CN103569037B (en) | 2012-07-24 | 2012-07-24 | Inductive key switch system and control method |
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| Country | Link |
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| CN (1) | CN103569037B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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 |
-
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 |
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| CN103569037A (en) | 2014-02-12 |
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