CN103967345A - Door lock capable of prompting key taking - Google Patents
Door lock capable of prompting key taking Download PDFInfo
- Publication number
- CN103967345A CN103967345A CN201410215043.1A CN201410215043A CN103967345A CN 103967345 A CN103967345 A CN 103967345A CN 201410215043 A CN201410215043 A CN 201410215043A CN 103967345 A CN103967345 A CN 103967345A
- Authority
- CN
- China
- Prior art keywords
- door lock
- key
- signal conditioning
- conditioning circuit
- buzzer
- 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.)
- Pending
Links
Landscapes
- Lock And Its Accessories (AREA)
Abstract
The invention discloses a door lock capable of prompting key taking. The door lock is characterized by comprising a key, a lock cylinder, a proximity switch, a signal conditioning circuit and a buzzer; the key is connected with the door lock and can unlock the door lock; the proximity switch is connected with the signal conditioning circuit, and signals received by the proximity switch are amplified and converted through the signal conditioning circuit; the signal conditioning circuit is connected with the buzzer and used for driving the buzzer to make a sound. The door lock is easy to implement, safe, reliable, high in sensitivity and the like.
Description
Technical field
The present invention relates to a kind of prompting and get key door lock, particularly a kind of door lock with current vortex approach switch.
Background technology
Door lock is being brought into play very important effect in people's life.Lose door keys and will cause inconvenience in life or even the infringement of the person and property.The reason of losing key has a lot, and wherein people have forgotten that after opening the door getting the key being inserted on door lock is one of reason.The door lock generally using now only has key and lock core to form, the function that does not have prompting to get key.
Summary of the invention
For the deficiencies in the prior art, invent a kind of prompting and get key door lock, utilize approach switch to detect key and whether insert lockhole, and send prompt tone, prompting people take off the key being inserted on door lock in time.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A key door lock is got in prompting, it is characterized in that, it comprises: key, lock core, approach switch, signal conditioning circuit, buzzer; Described key is connected with described door lock, can open door lock; Described approach switch is connected with described signal conditioning circuit, the signal that approach switch receives by signal conditioning circuit amplify, conversion process; Described signal conditioning circuit is connected with described buzzer, for driving buzzer to sound.
Preferably, described approach switch is surveyed described key, has judged whether that key is inserted in described door lock.
Preferably, described buzzer is according to the output signal of described signal conditioning circuit, the prompting of sounding.
Preferably, described approach switch is current vortex sensor, and model is selected HAD-STV75-77.
Technique scheme has following beneficial effect: for the deficiencies in the prior art, invent a kind of prompting and get key door lock, solve in daily life people and forget that taking off key causes key loss when unblanking, thus the problem working the mischief to the person and property safety.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of manual, below with preferred embodiment of the present invention and coordinate accompanying drawing to be described in detail as follows.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention structural representation.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
A key door lock is got in prompting, it is characterized in that, it comprises: 1 key, 2 lock cores, 3 approach switchs, 4 signal conditioning circuits, 5 buzzers; Described key is connected with described door lock, can open described door lock; Described approach switch is connected with described signal conditioning circuit, and the signal that described approach switch receives is processed by described signal conditioning circuit; Described signal conditioning circuit is connected with described buzzer, for sounding.
During system works, it is close that approach switch detects key, and after being processed by signal conditioning circuit, output dc voltage, realizes and control buzzer sounding, identifies thus and has or not metal object to approach.The object that approach switch can detect must be the metal object that electric conductivity is good.Change of distance between metal object and approach switch converts the variation of voltage to through current vortex sensor, in the high frequency magnetic field that metal material occurs at current vortex sensor, produce current vortex, cause the decay of eddy-current coils both end voltage, current vortex sensor output voltage has reflected the distance of metallic object and eddy-current coils, distance is nearer, and voltage is higher.When key inserts door lock, the distance of key and approach switch is very near, and current vortex sensor will output voltage, through just triggering buzzer warning after the amplification of signal conditioning circuit, conversion process; Otherwise when extracting key from door lock, when the distance of key and approach switch is far, current vortex sensor just can output voltage, the now output of signal conditioning circuit is almost nil, just can not trigger buzzer warning.
The approach switch that the present embodiment is selected is current vortex sensor, and model is selected HAD-STV75-77.HAD-STV75-77 probe coil adopts specific alloy element, greatly reduces the temperature drift coefficient value of Eddy-current sensor system, has improved certainty of measurement.It is 5mm that probe is selected diameter, can meet the needs of measurement, and probe is the necessary component of sensing system.
The signal conditioning circuit that the present embodiment is selected is LC oscillator and f/V converter, the inductance value L of probe coil and trimming capacitor C are formed to LC oscillator, using the frequency f of oscillator as output quantity, this frequency can be passed through f/V converter, convert voltage to, drive buzzer sounding.
A kind of the prompting above embodiment of the present invention being provided is got key door lock and is described in detail; for one of ordinary skill in the art; thought according to the embodiment of the present invention; all will change in specific embodiments and applications; in sum; this description should not be construed as the restriction to invention, and all any changes of making according to design philosophy of the present invention are all within protection scope of the present invention.
Claims (4)
1. a key door lock is got in prompting, it is characterized in that, it comprises: key, lock core, approach switch, signal conditioning circuit, buzzer; Described key is connected with described door lock, can open described door lock; Described approach switch is connected with described signal conditioning circuit, the signal that approach switch receives by signal conditioning circuit amplify, conversion process; Described signal conditioning circuit is connected with described buzzer, for driving buzzer to sound.
2. key door lock is got in a kind of prompting according to claim 1, it is characterized in that, described approach switch is surveyed described key, has judged whether that key is inserted in described door lock.
3. key door lock is got in a kind of prompting according to claim 1, it is characterized in that, described buzzer is according to the output signal of described signal conditioning circuit, the prompting of sounding.
4. key door lock is got in a kind of prompting according to claim 1, it is characterized in that, described approach switch is current vortex sensor, and model is selected HAD-STV75-77.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410215043.1A CN103967345A (en) | 2014-05-22 | 2014-05-22 | Door lock capable of prompting key taking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410215043.1A CN103967345A (en) | 2014-05-22 | 2014-05-22 | Door lock capable of prompting key taking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103967345A true CN103967345A (en) | 2014-08-06 |
Family
ID=51237309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410215043.1A Pending CN103967345A (en) | 2014-05-22 | 2014-05-22 | Door lock capable of prompting key taking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103967345A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4697171A (en) * | 1985-03-25 | 1987-09-29 | Dsung Precision Company | Electronic lock and key |
| CN201236548Y (en) * | 2008-07-30 | 2009-05-13 | 胡士中 | Lock core with detection apparatus |
| CN201354544Y (en) * | 2008-12-23 | 2009-12-02 | 上海市静安区第一中心小学 | Key alarm |
| CN201581710U (en) * | 2009-12-03 | 2010-09-15 | 江苏科技大学 | Device for reminding of not pulling out key of electric vehicle lock |
| CN203213728U (en) * | 2013-04-26 | 2013-09-25 | 上海电机学院 | Door lock capable of reminding people of pulling out key |
-
2014
- 2014-05-22 CN CN201410215043.1A patent/CN103967345A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4697171A (en) * | 1985-03-25 | 1987-09-29 | Dsung Precision Company | Electronic lock and key |
| CN201236548Y (en) * | 2008-07-30 | 2009-05-13 | 胡士中 | Lock core with detection apparatus |
| CN201354544Y (en) * | 2008-12-23 | 2009-12-02 | 上海市静安区第一中心小学 | Key alarm |
| CN201581710U (en) * | 2009-12-03 | 2010-09-15 | 江苏科技大学 | Device for reminding of not pulling out key of electric vehicle lock |
| CN203213728U (en) * | 2013-04-26 | 2013-09-25 | 上海电机学院 | Door lock capable of reminding people of pulling out key |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1959419B (en) | Current measurement instrument | |
| CN202098487U (en) | Automatic safety lock for bicycle | |
| CN204667602U (en) | Key with alarm | |
| CN104176405A (en) | Intelligent garbage can | |
| CN201203932Y (en) | Infrared induction go-off prompter | |
| US20160086482A1 (en) | Inductive security sensor not susceptible to magnetic tampering | |
| CN203257200U (en) | Electronic lock provided with external antenna | |
| CN203213866U (en) | PC board anti-pounding door based on intelligent induction | |
| CN103967345A (en) | Door lock capable of prompting key taking | |
| CN103104149A (en) | Emergency lock protection device for fingerprint lock | |
| CN204231033U (en) | Wireless electric energy transmission device | |
| CN210574249U (en) | Electric shock prevention device for motor switch | |
| CN104658201A (en) | System for automatically detecting keys and prompting when going out | |
| CN201946075U (en) | Portable burglar alarm device | |
| CN206844838U (en) | Intelligent detection device for antitheft door | |
| CN103216150A (en) | Antitheft doorlock | |
| CN204990449U (en) | Double fingerprint identification car lock of touch -sensitive warning | |
| CN103696670A (en) | Door with prompting function | |
| CN205910825U (en) | Remind belongings device based on cell -phone NFC unblank | |
| CN203430189U (en) | Emergency lock protection device for fingerprint lock | |
| CN101994428A (en) | Method for controlling close of anti-theft motor lock of electric rolling door | |
| CN204139772U (en) | With the mortise lock of self-locking alarm | |
| CN206390456U (en) | Luggage case with push type fingerprint sensor | |
| CN203230232U (en) | Antitheft door lock | |
| CN103770700A (en) | Vehicle door opening prompting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140806 |