CN202731486U - Induction type key switching system - Google Patents
Induction type key switching system Download PDFInfo
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- CN202731486U CN202731486U CN 201220360458 CN201220360458U CN202731486U CN 202731486 U CN202731486 U CN 202731486U CN 201220360458 CN201220360458 CN 201220360458 CN 201220360458 U CN201220360458 U CN 201220360458U CN 202731486 U CN202731486 U CN 202731486U
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Abstract
The utility model provides an induction type key switching system, comprising an ignition lock, a key matched with the lock, a fastener, an induction device, a sensing chip and a controller, wherein the sensing chip detects an excitation signal from the induction device and sends the signal to the controller; and the controller sends a control signal to the fastener. The system conquers the problem that the metal bolts of the mechanical key switch are deformed due to over fatigue, or the distance of the contact surfaces between the bolts is changed to be over the safe distance, then the signal is falsely triggered. Furthermore, by virtue of the induction type key switching system, only when the sensing chip is completely matched with the induction device, and a driver pulls out the key and gets off the car, the switching system can be used for automatically locking, so that the malfunction due to other improper operations can be prevented.
Description
Technical field
The utility model relates to the electronic switching technology field, is specifically related to a kind of induction type key switch device.
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.Because during automobilism, speed, in this process, if open because of carelessness car door with entail dangers to rider's life security, therefore when vehicle in traveling process, four can automatic blocking, guarantees by bus personnel's safety.Work as vehicle stop, when the driver extracts key, four dead lock meeting automatic unlockings, convenient by bus personnel get off.
In Chinese patent literature CN2823469Y, a kind of inductive vehicle automatic door lock is disclosed, this inductive vehicle automatic door lock is provided with an induction installation at least in automobile, the output of induction installation connects respectively the input of automobile door lock controller and sash lock controller, is connected in series delayer, gauge tap in the power supply input circuit of this induction installation.The key switch of the prior art is mechanical contact switch, Plug Action by key, so that thereby the metal clips in the inner slipper push key switch of ignition lock is realized being switched on or switched off, when Automobile key during at keyhole, key switch disconnects, the induction installation non-transformer is not worked, and the inductive vehicle automatic door lock is not locked; When the Automobile key was extracted, key switch was connected, and induction installation gets electric, in the induction car whether the people was arranged, and determined whether the inductive vehicle automatic door lock locks.But mechanical contact switch promotes its inner metal clips frequently, and the regular friction of inner slide block and metal clips can make metal clips 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, inductive switch has appearred in the development along with the electromagnetic induction technology.A kind of automotive electronics inductive switch is disclosed such as Chinese patent literature CN2907093Y, comprise housing, for detection of magnetosensitive sensing element and the control circuit of change of magnetic field strength, the magnetosensitive sensing element links to each other with control circuit, the magnetosensitive sensing element is arranged on the front end of housing, the place is provided with magnet at contiguous magnetosensitive sensing element, and the forearm of described housing is non-magnetic material.The prior art is by the magnet of outside magnet near controller inside, utilize the Hall element induced field to change the break-make of coming gauge tap, if this automotive electronics inductive switch is used on the automobile door lock, with respect to mechanical contact switch, have preferably sensitivity 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 can't measure, the on off operating mode of gauge tap is gone wrong, in addition, electronic equipment and electrical appliance in the automobile are more, the electromagnetic radiation that these article produce also can produce magnet-sensitive element and disturb, and the on off operating mode of gauge tap is gone wrong.
The utility model content
For this reason, to be solved in the utility model is that existing automotive electronics inductive switch poor anti jamming capability causes electronic switch to make mistakes, can't be applied directly to the technical problem of automobile door lock, and the induction type that a kind of antijamming capability is strong, reliability is high key switch device is provided.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
A kind of induction type key switch device comprises the ignition lock that is arranged on the motor place and the key that cooperates with it, and is arranged on the dead lock that the car door place is used for pinning car door,
Be provided with induction installation on the described ignition lock, be used for externally sending the pumping signal of predeterminated frequency;
Be provided with induction chip in the described key, be used for responding to the pumping signal that described induction installation sends, and external transmitted signal;
Also comprise controller, be used for receiving the signal that described induction chip sends, and the external variable control signal of output state;
Described dead lock is accepted the control signal of described controller, carries out according to the state of described control signal and unblanks or block action.
Described system, described induction installation is induction coil.
Described system, described induction coil around cloth outside described ignition lock.
Described system, described pumping signal are the low frequency signal of 30-100KHz.
Described system, the signal that described induction chip sends is modulation signal.
Described system, described control signal are high level and low level signal.
Described system, 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 system, described locking vehicle speed range be the 20-25 km/hour.
Technique scheme of the present utility model has the following advantages compared to existing technology:
The utility model provides a kind of induction type key switch device, comprises ignition lock, the key, dead lock, induction installation, induction chip and the controller that cooperate with it; Induction chip detects the pumping signal of induction installation, and induction chip sends a signal to controller, and controller transmits control signal to dead lock.This system has overcome the overtired shell fragment distortion that causes of mechanical type key switch metal clips, or contact surface exceeds the false triggering signal that safe distance causes apart from changing between the shell fragment.And the induction type key switch, only after induction chip and induction installation mated fully, the driver pulled key to get off and could realize the action of auto-unlocking, the misoperation that can prevent other abnormal operation to cause.
Description of drawings
For content of the present utility model is more likely to be clearly understood, the below is described in further detail the utility model, wherein according to specific embodiment of the utility model also by reference to the accompanying drawings
Fig. 1 is the structural representation of an a kind of induction type key switch device of embodiment of the utility model.
Reference numeral is expressed as among the figure: the 10-key; The 11-induction chip; The 20-ignition lock; The 21-induction coil; The 3-controller; The 4-dead lock.
The specific embodiment
Embodiment:
The below provides a concrete embodiment of a kind of induction type key switch device described in the utility model, referring to shown in Figure 1, a kind of induction type key switch device, comprise the ignition lock 20 that is arranged on the motor place and the key 10 that cooperates with it, and be arranged on the car door place for the dead lock 4 that pins car door, be provided with induction installation on the described ignition lock 20, in the present embodiment, described induction installation is around the induction coil 21 of cloth outside described ignition lock 20, and being used for externally sending predeterminated frequency is the pumping signal of 50KHz; Be provided with induction chip 11 on the described key 10, be used for responding to the pumping signal that described induction installation sends, and external transmitted signal, said signal is sinewave modulation signal; Also comprise controller 3, be used for receiving the signal that described induction chip 11 sends, and the external variable control signal of output state, described control signal herein is high level and low level signal; Described dead lock 4 is accepted the control signal of described controller 3, carries out according to the state of described control signal 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 the 30-100KHz.
The control method of described induction type key switch device comprises the steps:
After described key 10 inserts described ignition lock 20 and opens motor, automobile starting, when automobile enters the block action state, described controller 3 sends the low level control signal to described dead lock 4, described dead lock 4 is carried out block action, in the present embodiment, described block action state be the speed of a motor vehicle reach the locking speed of a motor vehicle 25 kms/hour the time locking.
Induction coil 21 is not for being with power mode, be arranged at the pumping signal that the described induction coil 21 in the described ignition lock 20 is externally launched 50KHz, in the actual induction scope of described induction chip 11 at described induction coil 21, described induction chip 11 receives the frequency of described pumping signal and described pumping signal when consistent with described induction chip 11 predetermined frequencies, and described induction chip 11 sends the locking inhibit signals to described controller 3; After described controller 3 receives described locking inhibit signal, export the low level control signal identical with the block action state to dead lock 4, dead lock 4 is kept blocking.
When described induction chip 11 not in the actual induction scope at described induction coil 21, described induction chip 11 does not receive the pumping signal of described induction coil 21, described induction chip 11 stops to send described locking inhibit signal to described controller 3, when described controller 3 does not receive described locking inhibit signal, described controller 3 is to the high-level control signal of described dead lock 4 transmissions with the block action opposite states, and described dead lock 4 is carried out the auto-unlockings action.
As other embodiments, described controller 3 sends high-level control signal to described dead lock 4, and described dead lock 4 is carried out block action; After described controller 3 receives described locking inhibit signal, export the high-level control signal identical with the block action state to dead lock 4, dead lock 4 is kept blocking; Described controller 3 is to the low level control signal of described dead lock 4 transmissions with the block action opposite states, and described dead lock 4 is carried out the auto-unlockings action.
As other embodiments, induction coil 21 is the band power mode, and described induction coil 21 was just externally launched pumping signal when described key 10 remained on described ignition lock 20 opening; When described key 10 is extracted described ignition lock 20, described induction coil 21 outages, 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 to send described locking inhibit signal to described controller 3, when described controller 3 did not receive described locking inhibit signal, described controller 3 was to the control signal of described dead lock 4 transmissions with the block action opposite states, and described dead lock 4 is carried out the auto-unlockings action.
As other embodiments, described locking vehicle speed range be the 20-25 km/hour; Locking when locking or foot brake when described block action state also comprises hand-operated brake.
Induction chip, controller during the utility model is created are hardware device of the prior art, and for example controller is the VA29 that Wenzhou Changjiang Automobile Electronic System Co., Ltd. produces, and induction chip is PCF7935 or the PCF7936 that NXP company or PHILIPS company produce.
Obviously, above-described embodiment only is for example clearly is described, and is not the 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 need not also can't give all embodiments exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the invention.
Claims (8)
1. an induction type key switch device comprises the ignition lock that is arranged on the motor place and the key that cooperates with it, and is arranged on the dead lock that the car door place is used for pinning car door, it is characterized in that:
Be provided with induction installation on the described ignition lock, be used for externally sending the pumping signal of predeterminated frequency;
Be provided with induction chip in the described key, be used for responding to the pumping signal that described induction installation sends, and external transmitted signal;
Also comprise controller, be used for receiving the signal that described induction chip sends, and the external variable control signal of output state;
Described dead lock is accepted the control signal of described controller, carries out according to the state of described control signal and unblanks or block action.
2. system according to claim 1, it is characterized in that: described induction installation is induction coil.
3. system according to claim 2 is characterized in that: described induction coil around cloth outside described ignition lock.
4. described system according to claim 1-3, it is characterized in that: described pumping signal is the low frequency signal of 30-100KHz.
5. system according to claim 4 is characterized in that: the signal that described induction chip sends is modulation signal.
6. system according to claim 5, it is characterized in that: described control signal is high level and low level signal.
7. system according to claim 6 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.
8. system according to claim 7 is characterized in that: described locking vehicle speed range be the 20-25 km/hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220360458 CN202731486U (en) | 2012-07-24 | 2012-07-24 | Induction type key switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220360458 CN202731486U (en) | 2012-07-24 | 2012-07-24 | Induction type key switching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202731486U true CN202731486U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220360458 Expired - Fee Related CN202731486U (en) | 2012-07-24 | 2012-07-24 | Induction type key switching system |
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| CN (1) | CN202731486U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103569037A (en) * | 2012-07-24 | 2014-02-12 | 浙江青年乘用车集团有限公司 | Inductive key switch system and control method |
| CN104599356A (en) * | 2014-12-24 | 2015-05-06 | 科世达（上海）管理有限公司 | Communication part and switch integrated device and method |
-
2012
- 2012-07-24 CN CN 201220360458 patent/CN202731486U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103569037A (en) * | 2012-07-24 | 2014-02-12 | 浙江青年乘用车集团有限公司 | Inductive key switch system and control method |
| CN103569037B (en) * | 2012-07-24 | 2017-05-24 | 浙江青年乘用车集团有限公司 | Inductive key switch system and control method |
| CN104599356A (en) * | 2014-12-24 | 2015-05-06 | 科世达（上海）管理有限公司 | Communication part and switch integrated device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20160724 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |