CN210721741U

CN210721741U - Deaf doorbell

Info

Publication number: CN210721741U
Application number: CN202020057438.4U
Authority: CN
Inventors: 周天沛
Original assignee: Xuzhou College of Industrial Technology
Current assignee: Xuzhou College of Industrial Technology
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-06-09
Anticipated expiration: 2030-01-10

Abstract

A deaf person doorbell comprises a wireless transmitter arranged on a gate and a wireless receiver arranged between the waist of a deaf person, wherein the wireless transmitter comprises a resistor R1, a capacitor C1-C2, a diode D1, an inductance coil L1, a triode BG1-BG2, a crystal oscillator XT1, a loudspeaker SW and a battery E1, the wireless receiver comprises a resistor R2-R3, a capacitor C3-C5, an electrolytic capacitor C6, a diode D2, an inductance coil L2-L9, a triode BG3, a crystal oscillator XT2, a loudspeaker SW, a battery E2, a switch S1, a light emitting diode LED1, a motor M1 and a wireless receiving chip IC1, and when a person visits, the wireless receiver hung on the waist of the deaf person can immediately send out a vibration signal and a light flash signal to tell the person outside the deaf person.

Description

Deaf doorbell

Technical Field

The utility model relates to a doorbell, specifically a deaf person's doorbell belongs to the disabled control technology field of helping.

Background

At present, the doorbell used in the family adopts a mode that a visitor presses a button and a loudspeaker sounds. The design is inconvenient for deaf people and friends, especially for deaf people to be at home alone, and at the moment, people visit the door and often cannot open the door in time because the people cannot hear the sound emitted by the doorbell.

Disclosure of Invention

To the problem that above-mentioned prior art exists, the utility model provides a deaf person's doorbell, when someone presses the button, deaf person can know someone and knock.

In order to achieve the above purpose, the utility model provides a deaf person doorbell, including the wireless transmitter who installs on the gate and set up the wireless receiver in deaf person' S waist, wireless transmitter includes resistance R1, electric capacity C1-C2, diode D1, inductance coil L1, triode BG1-BG2, crystal oscillator XT1, speaker SW, battery E1, wireless receiver includes resistance R2-R3, electric capacity C3-C5, electrolytic capacity C6, diode D2, inductance coil L2-L3, triode BG3, crystal oscillator XT2, battery E2, switch S1, emitting diode LED1, motor M1, wireless receiving chip IC1,

the positive electrode of the battery E1 is respectively connected with one end of a loudspeaker SW, one end of a button SB1 and a port 1 of an inductance coil L1, the other end of the loudspeaker SW is connected with a collector electrode of a triode BG2, the base electrode of the triode BG2 is respectively connected with the other end of the button SB1, one end of a resistor R1 and the negative electrode of a diode D1, the other end of a resistor R1 is respectively connected with the positive electrode of a diode D1, one end of a crystal oscillator XT1 and the base electrode of a triode BG1, the other end of the crystal oscillator XT1 is respectively connected with one end of a capacitor C1 and a port 2 of an inductance coil L1, the collector electrode of the triode BG1 is respectively connected with a port 3 of an inductance coil L1 and one end of a capacitor C2, the other end of the capacitor C2 is connected with an antenna, and the emitter electrode of the triode BG 2;

one end of a capacitor C3 is used for receiving signals of an antenna, the other end of the capacitor C3 is respectively connected with one end of an inductance coil L3 and one end of an inductance coil L2, the other end of the inductance coil L3 is connected with a pin 4 of a wireless receiving chip IC1, a pin 7 of the wireless receiving chip IC1 is connected with one end of a capacitor C4, the other end of a capacitor C4 and the other end of an inductance coil L2 are grounded, a pin 10 of the wireless receiving chip IC1 is connected with an anode of a diode D2 after being connected in series with a resistor R2, a cathode of the diode D2 is respectively connected with an anode of an electrolytic capacitor C6, one end of a resistor R3 and a base of a triode BG3, a collector of the triode BG3 is respectively connected with one end of a motor M1 and a cathode of a light emitting diode LED1, a pin 5 and a pin 6 of the wireless receiving chip IC1 are respectively connected with an anode of a battery E2, a cathode of the motor M2 and an anode of the light emitting diode, the pin 13 of the wireless receiving chip IC1 is connected with one end of a capacitor C5, the pin 14 of the wireless receiving chip IC1 is connected with one end of a crystal oscillator XT2, the pin 1 of the wireless receiving chip IC1, the pin 2 of the wireless receiving chip IC1, the pin 3 of the wireless receiving chip IC1, the pin 9 of the wireless receiving chip IC1, the pin 11 of the wireless receiving chip IC1, the pin 15 of the wireless receiving chip IC1, the pin 16 of the wireless receiving chip IC1, the other end of the capacitor C5, the other end of the crystal oscillator XT2, the other end of an electrolytic capacitor C6, the other end of a resistor R3, the emitter of a triode BG3 and the other end of a switch S1 are all grounded.

As a further improvement of the present invention, the wireless receiving chip IC1 is MICRF 002.

As a further improvement of the present invention, the triode BG1 is a PNP tube type, the model is 2SC3357, the triodes BG2 and BG3 are NPN tubes, and the model is 8050.

As a further improvement of the present invention, the diodes D1 and D2 are IN 4148.

As a further improvement of the utility model, the oscillation frequency of the crystal oscillator XT1 is 315MHz, and the oscillation frequency of the crystal oscillator XT2 is 4.89 MHz.

As a further improvement of the utility model, the voltage of the batteries E1 and E2 is 12V, and the model is 27A; the model of the direct current motor M1 is MVE-DC.

Compared with the prior art, the utility model discloses divide into wireless transmitter and wireless receiver, wireless transmitter installs on the gate, and wireless receiver hangs between deaf-mute's waist, when someone visits, as long as press wireless transmitting circuit's button SB1, hangs wireless receiver between deaf-mute's waist and will send vibration signal and light flashing signal immediately, tells deaf-mute to have someone outdoors, the utility model discloses simple structure is suitable for the deaf-mute to use.

Drawings

Fig. 1 is a schematic circuit diagram of the wireless transmitter of the present invention;

fig. 2 is a schematic circuit diagram of the wireless receiver of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, a deaf doorbell comprises a wireless transmitter mounted on a gate and a wireless receiver arranged between the waist of a deaf person, wherein the wireless transmitter comprises a resistor R1, capacitors C1-C2, a diode D1, an inductor L1, triodes BG1-BG2, a crystal oscillator XT1, a speaker SW and a battery E1, the wireless receiver comprises resistors R2-R3, capacitors C3-C5, an electrolytic capacitor C6, a diode D2, inductor L2-L3, a triode BG3, a crystal oscillator XT2, a battery E2, a switch S1, a light emitting diode LED1, a motor M1 and a wireless receiving chip 1,

The resistances of these elements in fig. 1 and 2 are well known, and those skilled in the art can adjust the parameters of the respective elements as required.

The working principle of the utility model is as follows: when a person visits, as long as a button SB1 of a wireless transmitter arranged on a gate is pressed, a crystal oscillator XT1 of a transmitting circuit starts to oscillate and transmits high-frequency signals with equal amplitude to the outside; meanwhile, the triode BG2 is conducted, and the loudspeaker SW arranged on the gate produces sound and is mainly used by people with normal hearing.

In order to better receive signals from a wireless transmitter, the superheterodyne receiving circuit is adopted, the sensitivity and the anti-interference performance of the superheterodyne receiving circuit are obviously superior to those of a traditional superregenerative receiving circuit, after the wireless receiver receives the signals, 10 pins of a wireless receiving chip IC1 output high levels, the high levels are rectified by a diode D2 and filtered by an electrolytic capacitor C6 and then are added to a base electrode of a triode BG3 to be conducted, a driving motor M1 sends out vibration signals, and meanwhile, a light emitting diode LED1 is lightened, so that a deaf person is informed that a person is out of a door at the moment.

Claims

1. A deaf person doorbell is characterized by comprising a wireless transmitter and a wireless receiver, wherein the wireless transmitter is installed on a gate, the wireless receiver is arranged between the waist of a deaf person, the wireless transmitter comprises a resistor R1, capacitors C1-C2, a diode D1, an inductance coil L1, triodes BG1-BG2, a crystal oscillator XT1, a loudspeaker SW and a battery E1, the wireless receiver comprises resistors R2-R3, capacitors C3-C5, an electrolytic capacitor C6, a diode D2, inductance coils L2-L3, a triode BG3, a crystal oscillator XT2, a battery E2, a switch S1, a light emitting diode LED1, a motor M1 and a wireless receiving chip IC1,

2. The deaf-person doorbell of claim 1, wherein the wireless receiving chip IC1 is MICRF002 model.

3. The deaf-person doorbell of claim 1, wherein the transistor BG1 is a PNP tube type with a model of 2SC3357, and the transistors BG2, BG3 are NPN tubes type with a model of 8050.

4. The deaf-person doorbell of claim 1, wherein the diodes D1, D2 are model IN 4148.

5. The deaf-person doorbell of claim 1, wherein the oscillation frequency of crystal oscillator XT1 is 315MHz and the oscillation frequency of crystal oscillator XT2 is 4.89 MHz.

6. The deaf-person doorbell of claim 1, wherein the voltage of the batteries E1, E2 is 12V, model 27A; the model of the direct current motor M1 is MVE-DC.