CN201474416U

CN201474416U - Fingerprint lock with sensitization and proximity induction lighting

Info

Publication number: CN201474416U
Application number: CN2009201756133U
Authority: CN
Inventors: 潘世学
Original assignee: JIAXING CHUNXIANG ELECTRONICS TECHNOLOGY Co Ltd
Current assignee: JIAXING CHUNXIANG ELECTRONICS TECHNOLOGY Co Ltd
Priority date: 2009-09-08
Filing date: 2009-09-08
Publication date: 2010-05-19
Anticipated expiration: 2019-09-08

Abstract

The utility model provides a fingerprint lock with sensitization and proximity induction lighting, which aims to conveniently unlock and save energy source. The utility model adopts the technical scheme that a lighting lamp and a fingerprint sensor are arranged in the lock body, and the lock body is further provided with a light sensor, a singlechip and a proximity induction coil. The output end of the singlechip is connected with the lighting lamp, and the input end thereof is respectively connected with the light sensor and the proximity induction coil. The lighting lamp in the fingerprint lock is opened when lights are darker or fingers are close to the sensor, and can not be opened when lights are bright, which is conveniently to unlock and save energy sources.

Description

Has sensitization and near the Fingerprint Lock of inductive lightning

Technical field

The utility model relates to a kind of Fingerprint Lock, be particularly related to and a kind ofly have sensitization and near the Fingerprint Lock of inductive lightning, when extraneous light was brighter, the illuminating lamp of this Fingerprint Lock can not opened, energy conservation, the illuminating lamp of Fingerprint Lock was opened when dark and finger was near fingerprint sensor when extraneous light.

Background technology

Fingerprint technique has been widely used among the lock body along with continuous development, thereby has produced Fingerprint Lock.When the environment of night or dark was opened Fingerprint Lock, finger need be placed on the tram of fingerprint sensor and lock and could open, and brought great inconvenience for user's use.In order to solve its problem, on lock body, added a LED lamp, utilize the illumination of LED lamp to be mapped to above the sensor and accurately locate, convenient finger is positioned over the tram.The LED illuminating lamp of Fingerprint Lock all adopts mechanical key or travel switch mode to open LED on the existing market, and closing LED also is by mechanical key or travel switch, or regularly a time period extinguishes automatically.Because the power supply of Fingerprint Lock is powered with dry cell or lithium battery mode, to save energy consumption be key technical index again, and under these modes, the unlatching of LED can not be saved electric weight.

Summary of the invention

The utility model provides a kind of and has sensitization and near the Fingerprint Lock of inductive lightning, purpose is to solve the prior art problem, illuminating lamp in this Fingerprint Lock is opened when dark and finger is near fingerprint sensor at extraneous light, and when the light on the fingerprint sensor is brighter, illuminating lamp can not opened, energy conservation.

The utility model technical scheme that adopts of dealing with problems is:

Have sensitization and, include illuminating lamp, fingerprint sensor in the lock body, it is characterized in that: also be provided with light sensor, single-chip microcomputer in the lock body and near induction coil near the Fingerprint Lock of inductive lightning; The single-chip microcomputer output is connected with illuminating lamp, and input is connected with light sensor respectively and reaches near induction coil.

The beneficial effects of the utility model: the illuminating lamp in this Fingerprint Lock is opened when dark and finger is near fingerprint sensor at extraneous light, and when the light in the external world was brighter, illuminating lamp can not be opened, and has saved the energy when conveniently unblanking reaching like this.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the connection diagram of each element in the utility model;

Fig. 3 is near principle of induction figure one;

Fig. 4 is near principle of induction figure two;

Fig. 5 is the light-inductive schematic diagram.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

As shown in Figure 1 and Figure 2, have sensitization and, include LED illuminating lamp 2, fingerprint sensor 5 in the lock body 1, also be provided with light sensor 3, single-chip microcomputer (not shown) in the lock body 1 and near induction coil 4 near the Fingerprint Lock 100 of inductive lightning.The single-chip microcomputer output is connected with LED illuminating lamp 2, and input is connected with light sensor 3 respectively and reaches near induction coil 4.

Light sensor 3 is placed on Fingerprint Lock lock body 1 in appearance in the present embodiment, placement location can be random, it is just passable only can to receive ambient light, can be placed near induction coil 4 and to make a circle in 5 weeks of fingerprint sensor, also can be placed on make a circle in 1 week of lock body on, just can arbitrarily place near lock body as long as can sense human body.Light sensor and have only near induction coil and to satisfy above condition and can arbitrarily place at lock body.Fig. 1 is wherein a kind of modes of emplacement just.

Near principle of induction:

Citation form near induction is two adjacent metal sheets, and as shown in Figure 3, they have constituted a little electric capacity, and switch designs becomes to make the capacitance between two metal sheets to try one's best may be little.When a conductive body near this to sheet metal, as shown in Figure 4, between every sheet metal and electric conductor, all will constitute new electric capacity.Conductor in the accompanying drawing 3 is a finger, and this technology also is applicable to other electric conductor.

Near the most frequently used form of induction is an end ground connection, and other end signal is for reading.At this moment, be the variable capacitance of a ground connection near induction essence.When electric conductor near near induction coil the time, the capacitance of switch increases.Can judge that finger or conductor are near induction coil by the variation of measuring switch capacitance.

The light sensor principle:

Light sensor is a variable resistor, and when ambient light was strong, it is very little that resistance becomes, and when ambient light was more weak, it is very big that resistance becomes.Circuit as shown in Figure 5, when ambient light was strong, the AD test point was bigger to the voltage on ground, when ambient light is more weak, the AD test point to the voltage on ground almost near zero.The state of MCU (the miniature control module of micro controller unit is a single-chip microcomputer) processing AD test point is distinguished the power of ambient light.

By above principle, when dark or Fingerprint Lock 100 surrounding environment light were dark when the ambient light on the fingerprint sensor 5 of Fingerprint Lock, the state that MCU detects the AD test point was low state, otherwise is high state.When finger or human body during near induction coil 4, the capacitance that MCU detects switching capacity increases, and judges finger or human body near induction coil 4, otherwise does not then have.Then according to these two conditions,, open LED illuminating lamp 2 if the state of AD test point is low and when detecting the switching capacity value and increasing.

Therefore, when lock body 1 ambient light is dark, human body or finger are during near lock body 1, and LED illuminating lamp 2 lights, when any condition lacks, LED illuminating lamp 2 extinguishes, work as finger or human body placement a period of time (as 30 seconds) simultaneously and remain static all the time, have the function of conforming near induction, this state of induction coil sensor is set to original state at this moment, think that electric capacity does not change, the LED lamp extinguishes.

Illuminating lamp in this Fingerprint Lock is opened when dark and finger is near fingerprint sensor at extraneous light, and when the light in the external world was brighter, illuminating lamp can not be opened, and has saved the energy when conveniently unblanking reaching like this.

Claims

1. have sensitization and, include illuminating lamp, fingerprint sensor in the lock body, it is characterized in that: also be provided with light sensor, single-chip microcomputer in the lock body and near induction coil near the Fingerprint Lock of inductive lightning; The single-chip microcomputer output is connected with illuminating lamp, and input is connected with light sensor respectively and reaches near induction coil.