CN2529475Y

CN2529475Y - Automatic remote-control switching device for using colour TV. as display of visual door bell

Info

Publication number: CN2529475Y
Application number: CN 02208284
Authority: CN
Inventors: 张忠新; 张传印
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-19
Filing date: 2002-03-19
Publication date: 2003-01-01
Anticipated expiration: 2012-03-19

Abstract

The utility model discloses an automatic remote-control switching device for using a colour TV as the display of a visual door bell. The automatic remote-controlling system belongs to the field of electronic technology and aims at providing a visual door bell automatic remote-controlling and switching device. The utility model comprises an outer cover, a voltage stabilizer and an infrared remote control radiation unit which are arranged on the internal circuit board of the outer cover. In addition, the utility model also comprises a converter which consists of a TV start maintaining circuit, a TV or AV converting and controlling circuit and also a TV or AV reversed rotating control circuit. The converter adopts the color TV to replace the small displayer in the visual door bell system. The application of the sample machine proves that the TV imaging displaying visual door bell automatic remote-controlling converter has excellent effect.

Description

TV video picture video doorbell automatic remote control switch

The utility model belongs to the autochief of electronic technology field, particularly relates to a kind of video doorbell automatic remote control switch that utilizes the TV video picture.

At present, the video doorbell system of market sale, common has desk-top and wall-hanging two kinds, system is provided with small displays specially, when the people presses doorbell, and system start-up, to come to visit personnel's video picture on small displays by the little pick-up lens that is located at outdoors, this video doorbell system is generally monochrome presentation, and not only picture is narrow, visual effect is poor, take additional space, and the expense of small displays accounts for the over half of video doorbell system.

The purpose of this utility model is: a kind of TV video picture video doorbell automatic remote control switch that utilizes existing family expenses color television set double as video doorbell system display is provided, as long as be equipped with a colored pick-up lens again and ring the doorbell system, just consist of the complete colorful visual door bell and button system of a cover with existing family expenses color television set.

To achieve these goals, TV video picture video doorbell automatic remote control switch of the present utility model, include housing, button and be installed in pressurizer and the infrared remote-control emitter on the wiring board in the housing, it comprises that also a signal input part has installed the controller of photosensitive multiple device DRL and one additional and gone back to the transducer that control circuit is formed by television startup holding circuit, TV/AV conversion control circuit and AV/TV.

The start holding circuit is connected to form by R202, VSR, D203, C204, R203, R204, ZD202, N202, R205, Q202, C205, C206, R206, N203 element via line.

Comprise in the TV/AV conversion control circuit mainly by N204, VR201, C212 element via line connect to form 1.5 second delay control circuit and mainly by N205, VR202, C210 element via line connect to form 3 second delay control circuit and the electrical level output circuit that mainly connects to form by Q203, R212, R213, R214 element via line.

TV/AV goes back to and comprises the adjustable control circuit of delaying time 12 seconds that connected to form by N206, VR203, C208 element via line in the control circuit.

TV video picture video doorbell automatic remote control switch of the present utility model, the existing family expenses color TV of utilization replaces the small displays in the present commercially available video doorbell system, can realize the switching of television image and video doorbell picture automatically, thereby effectively promote the use value and the utilance of domestic TV, improve the quality of video doorbell monitored picture, banned small displays.Use proof through model machine, this TV video picture video doorbell automatic remote control switch effect is splendid, has reached the anticipation effect fully.

Fig. 1 is a circuit structure block diagram of the present utility model;

Fig. 2 is the circuit theory diagrams of the utility model controller;

Fig. 3 is the circuit theory diagrams of the utility model pressurizer and transducer;

Fig. 4 is the circuit theory diagrams of the utility model infrared remote-control emitter;

Describe performance and control principle in detail below in conjunction with accompanying drawing, this TV video picture video doorbell automatic remote control switch mainly is made up of controller, transducer, infrared remote-control emitter three parts, be contained in the housing, the housing space of a whole page is provided with " study ", " ON/OFF ", " TV/AV ", " going back to " four buttons, and the infrared transmitting tube available wire is drawn and is contained in the special plastic housing.Concrete operation principle is: the action of the relay J of controller makes the mains switch K closure of pressurizer when pressing doorbell, and transducer and infrared remote-control emitter are started working; At first, transducer is by the television set startup (television set watched maintain the original state) of infrared remote-control emitter with holding state, be converted to the AV state then at once and show people or visiting people's the situation of ringing the doorbell, transducer rotates back into the original picture of TV state with television set after 12 seconds, has finished the whole process of TV video picture.

The critical piece of forming TV video picture video doorbell automatic remote control switch: the operation principle of controller, pressurizer, transducer, infrared remote-control emitter is as described below:

Controller connects DRL, N101, R101, R102, D101, D102, C101, C102, VR101 and relay J by circuit theory diagrams as shown in Figure 2 with circuit.When TV was in holding state, DRL (light-dependent control element) did not work, and (2) pin of N101 is high level, (3) pin output low level; When messenger pressed electronic door bell, (1) of DRL, (2) pin had individual bell signal electric current to pass through, and made (3), (4) pin conducting of DRL, and (2) pin of N101 transfers low level to by original high level, its (3) pin upset output high level, relay J action.According to the actual needs of system, relay J gets electric work and should quit work after time-delay in 20 seconds; The length of this delaying time of controller time can be adjusted by the size that changes VR101 and C101 capacitance-resistance value.

Pressurizer is shown in the circuit theory diagrams of Fig. 3: connect to form direct current regulation circuit by K switch, transformer T, D201, D202, C201, N201, C202, R201, ZD201, Q201, C203 by schematic diagram, wherein be connected the elementary K switch of transformer T and be controlled by relay J among Fig. 2; K switch closure when the relay J adhesive, pressurizer output 12V direct current is supplied with transducer, output 3V direct current is supplied with infrared remote-control emitter.

Transducer is shown in the circuit theory diagrams of Fig. 3:

Wherein connected to form the start holding circuit by schematic diagram by R202, VSR, D203, C204, R203, R204, ZD202, N202, R205, Q202, C205, C206, R206, N203, R207; When television set was in holding state, the electric current of R202 and television set dividing potential drop is through D203, C204 rectifying and wave-filtering and R203, R204 current limliting, and was very little to the electric current of N202 (1) pin, and this moment, the voltage because of N202 (1) (2) pin can not make N202 work less than 0.5V; When relay J adhesive television set is opened, (1) of N202, (2) pin voltage are greater than 1.0V, N202 and Q202 work, the collector electrode output high level of Q202 is given (2), (6) pin of N203, make (3) pin upset output low level of N203 (12) pin to N207, (10) of N207, (11) pin open circuit, the machine open/close function of infrared remote-control emitter that is controlled by (10), (11) pin of N207 has lost the shutdown control to television set fully, thereby has reached the purpose that television startup keeps; VSR in the circuit and ZD202 are respectively the over-voltage protection element of R202, N202.

Connected to form the TV/AV conversion control circuit by N204, VR201, C212, N205, VR202, C210, Q203, R212, R213, R214 by schematic diagram; The concrete course of work is as follows: when+12V electricity arrived, (2) of N205, (6) pin were low level, (3) pin upset output high level, and to the Q203 base stage, Q203 ends through R213; After about 1.5 seconds, the C210 end of charging, (2) of N205, (6) pin are high level, (3) pin upset output low level, the Q203 conducting makes collector electrode output high level, through R214 (13) pin to N207, makes (1), (2) pin conducting of being controlled by N207 (13) pin, the control infrared remote-control emitter is given TV/AV conversion instruction of television set, and picture automatically switches to the AV state; 1.5 second time-delay control is in order to satisfy the requirement that available machine time and AV change-over time can not synchronization action.Approximately through after 3 seconds, the C212 end of charging, (2) of N204, (6) pin are high level, (3) pin upset output low level, N205, Q203 dead electricity quit work, and have finished the AV conversion.

Connected to form by the schematic diagram of Fig. 3 by N206, VR203, C208, R208, R209, R210, R215, Q204 and to have gone back to control circuit; Wherein constitute the time-delay control in one 12 second by N206, VR203, C208, operation principle is: when+12V electricity arrives, (2) of N206, (6) pin are low level, (3) pin output high level, arrive the Q204 base stage through R210, this moment, Q204 ended, and collector electrode is subjected to (3), (4) not conducting of pin of the control N207 of (5) pin to N207 (5) pin output low level; After 12 seconds, the C208 end of charging, (2) of N206, (6) pin are high level, (3) the pin output low level makes the Q204 conducting, collector electrode output high level, through R215 (5) pin to N207, make (3), (4) pin conducting of N207 go back to command signal for one of infrared remote-control emitter, realized going back to automatically the function of television image.Just the AV state is opened, automatically switched to the time television set through about 3 seconds automatically when pressing doorbell, the signal of video signal that the outer little pick-up lens of television set show gate imports into, and television set automatically switches to the TV state by the AV state after 12 seconds.The delay time in 12 seconds can be adjusted VR203, C208 capacitance-resistance value changes.

Infra-red remote control transmitter shown in Fig. 4 circuit theory diagrams, be utilized intelligence learning type handle type infrared remote-control emitter principle, by " power supply both positive and negative polarity ", " ON/OFF ", " TV/AV " of intelligence learning type handle type infrared remote-control emitter, the contact of " going back to " four functions are connected with (1) (2) pin, (3) (4) pin, (7) (8) pin and (5) (6) pin of C0201 among Fig. 3 respectively; Again " study ", " ON/OFF ", " TV/AV ", " going back to " four buttons are installed in respectively on the housing space of a whole page.Press these four keys respectively and can finish the learning functionality of infra-red remote control transmitter, can make TV video picture video doorbell automatic remote control switch be applicable to the television set of obstructed model.

Claims

1, a kind of TV video picture video doorbell automatic remote control switch, by housing, button be installed in that pressurizer on the wiring board and infrared remote-control emitter etc. connect and compose in the housing, it is characterized in that it comprises that also a signal input part has installed the controller of photosensitive multiple device DRL and one additional and gone back to the transducer that control circuit (3) is formed by television startup holding circuit (1), TV/AV conversion control circuit (2) and AV/TV.

2, TV video picture video doorbell automatic remote control switch as claimed in claim 1 is characterized in that start start holding circuit (1) is connected to form by R202, VSR, D203, C204, R203, R204, ZD202, N202, R205, Q202, C205, C206, R206, N203 element via line.

3, TV video picture video doorbell automatic remote control switch as claimed in claim 1 is characterized in that comprising in the TV/AV conversion control circuit (2) the time-delay circuit for regulating and controlling and main time-delay circuit for regulating and controlling and the main electrical level output circuit that is connected to form by Q203, R212, R213, R214 element via line that is connected to form by N205, VR202, C210 element via line that are mainly connected to form by N204, VR201, C212 element via line.

4, TV video picture video doorbell automatic remote control switch as claimed in claim 1 is characterized in that TV/AV goes back to and comprises a time-delay circuit for regulating and controlling that is mainly connected to form by N206, VR203, C208 element via line in the control circuit (3).