CN203825740U

CN203825740U - Multi-audio provided electronic door bell

Info

Publication number: CN203825740U
Application number: CN201420258595.6U
Authority: CN
Inventors: 江敏
Original assignee: Chongqing College of Electronic Engineering
Current assignee: Chongqing College of Electronic Engineering
Priority date: 2014-05-20
Filing date: 2014-05-20
Publication date: 2014-09-10
Anticipated expiration: 2024-05-20

Abstract

The utility model discloses a multi-audio electronic doorbell which comprises a doorbell housing, doorbell buttons and a doorbell circuit. The doorbell buttons are arranged on the surface of the doorbell housing. The doorbell circuit is disposed inside the doorbell housing. There are four doorbell buttons. The doorbell circuit comprises a music circuit, an inner speaker and an outer speaker. One end of each of the four buttons is connected respectively with four resistors referred as a 10K resistor, a 20K resistor, a 30K resistor and a 40K resistor. The four resistors are connected to a power supply. The other end of each of the four buttons is connected respectively with the base electrode of a PNP type triode. The nine pins of an NE555 chip are connected to the inner speaker and the outer speaker through output capacitors. The multi-audio electronic doorbell of the utility model is provided with such a design with a plurality of audios. When a user presses different buttons, the doorbell makes different sound frequencies; a user could use the buttons to kill his or her boring feelings while waiting for answers. A host can also tell a visitor the number of music button to press in advance, so that the host would know who the visitor is when the visitor presses the button, therefore, making the electronic doorbell more safely.

Description

A kind of Multi-audio-frequency electronic door bell

Technical field

The utility model belongs to electronic technology field, particularly a kind of Multi-audio-frequency electronic door bell.

Background technology

Doorbell is the bell on door; Be divided into and have Line Doorbell and wireless doorbell; Wireless doorbell is divided into again without the wireless doorbell of battery and common wireless doorbell; Refer to that without the wireless doorbell of battery transmitter adopts energy capture technology, can collect the energy conversion of user while pressing bell button is that electric energy drives doorbell acoustical generator jingle bell; Its indoor set namely doorbell acoustical generator need to connect civil power; The control signal that bell button produces, launches by wireless signal transmitter, and the wireless signal receiver of indoor set receives this wireless signal; Existing doorbell general utility functions are for reminding owner, and outside, room has people to knock at the door, and can produce resentment because visitor rings the doorbell to can not get response for a long time, and the owner in another room is difficult to learn whom visit person is from remind sound.

Utility model content

For the problems referred to above, the purpose of this utility model is to provide a kind of Multi-audio-frequency electronic door bell, can eliminate visit person's boring mood, and owner also can know whom visit person is simultaneously.

Technical solution of the present utility model: a kind of Multi-audio-frequency electronic door bell, comprises doorbell housing, doorbell button and doorbell circuit; Described doorbell button is installed on doorbell surface of shell; Described doorbell circuit is installed on doorbell enclosure interior; Described doorbell button is made up of four buttons; Described doorbell circuit is made up of music circuit, interior sound equipment and outer sound equipment; Described music circuit comprises NE555 chip, and 4 pin and 8 pin of described NE555 chip connect power supply, and described 2 pin and 6 pin are by connecing power supply by capacity earth and variable resistor respectively; Described four buttons respectively one end are connected with respectively 10K Ω, 20K Ω, 30K Ω and 40K Ω resistance; Described 10K Ω, 20K Ω, 30K Ω and 40K Ω resistance are connected to power supply; The described four button other ends are received respectively the base stage of the triode of a positive-negative-positive; The emitter of described triode passes through a 2K Ω resistance to power supply; The grounded collector of described triode; Between the emitter and collector of described triode, cross-over connection has the resistance of 20K Ω; Described NE555 chip 1 pin ground connection; Described NE555 chip 9 pin are connected to interior sound equipment and outer sound equipment by output capacitance.

Further, described interior sound equipment is installed on indoor; Described outer sound equipment is installed on doorbell housing.

Further, between described output capacitance and outer sound equipment, be also serially connected with 47 Ω variable resistors.

Compared with prior art, Multi-audio-frequency electronic door bell of the present utility model, by the setting of Multi-audio-frequency electronic door bell, user presses different buttons, will send different sound frequencies, and user can eliminate by button visit person's boring mood, owner tells visit person's audio frequency key number in advance, when visit person pushes button, owner can know whom visit person is, security is more increased.

Brief description of the drawings

Fig. 1 is the utility model one-piece construction schematic diagram.

Fig. 2 is the utility model doorbell circuit structural representation.

Embodiment

As shown in Figure 1, Multi-audio-frequency electronic door bell of the present utility model, comprises doorbell housing 1, doorbell button 2 and doorbell circuit; Described doorbell button 2 is installed on doorbell housing 1 surface; Described doorbell circuit is installed on doorbell housing 1 inside, and as shown in Figure 2, described doorbell button 1 is made up of four button s1, s2, s3, s4; Described doorbell circuit is made up of music circuit, interior sound equipment and outer sound equipment sp1; Described music circuit comprises NE555 chip, and 4 pin and 8 pin of described NE555 chip meet power supply vcc, and described 2 pin and 6 pin are by connecing power supply by the electric capacity c1 ground connection of 0.01nF and the variable resistor Rp1 of 10k Ω fixed resistance R1 and 100k Ω respectively; Described NE555 chip 7 pin are connected and fixed in the middle of resistance R 1 and variable resistor Rp1; Described four button s1, s2, s3, s4 one end are connected with respectively resistance R 4, R5, R6, the R7 of 10K Ω, 20K Ω, 30K Ω and 40K Ω; Resistance R 4, R5, R6, the R7 of described 10K Ω, 20K Ω, 30K Ω and 40K Ω are connected to power supply vcc; Described four button s1, s2, s3, the s4 other end are received respectively the base stage of the triode Q1 of a positive-negative-positive; The emitter of described triode Q1 is connected respectively to 5 pin of NE555 chip and arrives power supply vcc by a 2K Ω resistance R 9; The grounded collector of described triode Q1; Between the emitter and collector of described triode, cross-over connection has the resistance R 2 of 20K Ω; Described NE555 chip 1 pin ground connection; Described NE555 chip 9 pin are connected to interior sound equipment sp2 and outer sound equipment sp1 by output capacitance C9; Described interior sound equipment sp2 is installed on indoor; Described outer sound equipment sp1 is installed on doorbell housing 1; Between described output capacitance c9 and outer sound equipment sp1, be also serially connected with 47 Ω variable resistor Rp2, can regulate the acoustical quality of outer sound equipment sp1 together with output capacitance c9.

Multi-audio-frequency electronic door bell user of the present utility model presses different buttons, produces the square-wave pulse signal of different frequency, can send the note of 4 kinds of different scales through voice module.

Multi-audio-frequency electronic door bell of the present utility model, by the setting of Multi-audio-frequency electronic door bell, user presses different buttons, different sound frequencies will be sent, user can eliminate by button visit person's boring mood, and owner tells visit person's audio frequency key number in advance, when visit person pushes button, owner can know whom visit person is, security is more increased.

Embodiment recited above is described preferred implementation of the present utility model, not design of the present utility model and scope is limited.Do not departing under the prerequisite of the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection domain of the present utility model; the technology contents of the utility model request protection, has all been documented in claims.

Claims

1. a Multi-audio-frequency electronic door bell, comprises doorbell housing, doorbell button and doorbell circuit; Described doorbell button is installed on doorbell surface of shell; Described doorbell circuit is installed on doorbell enclosure interior; It is characterized in that: described doorbell button is made up of four buttons; Described doorbell circuit is made up of music circuit, interior sound equipment and outer sound equipment; Described music circuit comprises NE555 chip, and 4 pin and 8 pin of described NE555 chip connect power supply, and described 2 pin and 6 pin are by connecing power supply by capacity earth and variable resistor respectively; Described four buttons respectively one end are connected with respectively 10K Ω, 20K Ω, 30K Ω and 40K Ω resistance; Described 10K Ω, 20K Ω, 30K Ω and 40K Ω resistance are connected to power supply; The described four button other ends are received respectively the base stage of the triode of a positive-negative-positive; The emitter of described triode passes through a 2K Ω resistance to power supply; The grounded collector of described triode; Between the emitter and collector of described triode, cross-over connection has the resistance of 20K Ω; Described NE555 chip 1 pin ground connection; Described NE555 chip 9 pin are connected to interior sound equipment and outer sound equipment by output capacitance.

2. Multi-audio-frequency electronic door bell according to claim 1, is characterized in that: described interior sound equipment is installed on indoor; Described outer sound equipment is installed on doorbell housing.

3. Multi-audio-frequency electronic door bell according to claim 1, is characterized in that: between described output capacitance and outer sound equipment, be also serially connected with 47 Ω variable resistors.