CN2543301Y - Remote-control turning on/off cable TV signal converter - Google Patents

Abstract

A remote-control turning on/off cable full TV signal converter is provided. A wireless data receiving signal has a received control data transmitted to a coaxial cable through an inductor L1 after amplification and rectification by a control data rectification output circuit. The control data transmitted in the coaxial cable is received by an inductor L2 connected to the coaxial cable and rectified, then reflected a corresponding control by a gating and decoding control circuit. An image signal and an audio signal inputted are modulated to a full TV signal and outputted to the coaxial cable, namely to a full TV signal amplification circuit of the coaxial cable, after the rectification. Then the full TV signal transmitted in the coaxial cable is amplified and outputted to an antenna. A power is connected with a work station coding switch on which a control coding corresponding to a remote controller is provided. The output terminal of the work station coding switch is connected with the gating and decoding control circuit. The remote-control turning on/off cable full TV signal converter of the utility model has no wire connection and no monitoring center and has a strong randomness for a monitoring system.

Description

The cable composite video signal transponder that remote control opens and closes

Technical field: the utility model relates to a kind of being applied to can be by the cable composite video signal transponder of remote control keying in the supervisory control system.

Background technology: at present, the closed-circuit TV monitoring system widespread usage AT STATION, the field monitor in airport, harbour, traffic route and some important places, supervision and management center is to field personnel's transfer and coordination by way of closed-circuit television, but in the railway system, especially in the train that moves, distinctive operational environment and service request, more need effective watch-dog support performance, but present supervisory control system directly connects by cable, and wired connection wiring is complicated, Surveillance center need be arranged, the environment that is not suitable for moving, randomness are not strong.

Summary of the invention: in order to address the above problem, the utility model provides a kind of can separating never in supervisory control system need connect up, not have Surveillance center, the cable composite video signal transponder that random strong remote control opens and closes.

Concrete technical scheme is as follows: the cable composite video signal transponder that a kind of remote control opens and closes, it is characterized in that: comprise the remote signal reception antenna, wireless data receives, control data shaping output, control data receives, the work station code switch, the gating decoding control circuit, composite video signal modulation output, composite video signal is amplified output, TV signal transmitting antenna and remote controller are formed, the wireless data received signal sends to coaxial cable by inductance L 1 after by control data shaping output circuit the control data of receiving being amplified shaping, the L2 that is connected on the coaxial cable receives by the control data of transmission over coaxial cable and with its shaping, and hand over the gating decoding control circuit to respond control corresponding with it, behind the gating picture signal and the audio signal of input is modulated into composite video signal and outputed on the coaxial cable, be connected the composite video signal amplifying circuit on the coaxial cable, export antenna to transmitting the composite video signal amplification on the coaxial cable.Power supply is connected with the work station code switch, and the work station code switch is provided with the control coding corresponding with remote controller, and the output of work station code switch is connected with the gating decoding control circuit.

Described remote controller is that wireless data transmission input is connected with the data output end of encoder DV5026, the power supply of wireless data transtation mission circuit is connected with the capacitor C of booster circuit 2, inductance L, fast recovery diode D, transistor B1, B2, capacitor C 1, C2, C3, resistance R 3, R4, the power supply booster circuit that R5 and oscillating circuit JH100 form, the power supply booster circuit sends with wireless data and links to each other, adjusting potentiometer W is connected with the B1 base stage, power supply booster circuit R5 links to each other with the AT89C2051 single-chip microcomputer, numeric keypad is connected with the geocoding line of encoder DV5026, be in parallel with the input interface of AT89C2051 single-chip microcomputer, LCD is connected with the AT89C2051 single-chip microcomputer, button V1, V2, V3, V4 is the function operating key of remote controller.

Compare with prior art, the utility model is by controlling encoded image workstation, can finish the selection of the working method of manual mode or automatic scan, the image workstation upper limit is selected when the adjustment of automatic scan time and automatic scan, the wireless data transmission circuit of remote controller, can pass through the wireless receiving circuit and the coaxial cable of image workstation respectively, image encoded work station is effectively controlled, wireless data receives a control signal that the reception remote controller sends, and send to coaxial cable by inductance L 1 after by control data shaping output circuit the control data received being amplified shaping, the L2 that is connected on the coaxial cable receives by the control data of transmission over coaxial cable and with its shaping, and the control of handing over the response of gating decoding control circuit to be associated with it, selected by after the picture signal and the acoustic scene tone signal of input is modulated into composite video signal and outputs on the coaxial cable, be connected the composite video signal amplifying circuit on the coaxial cable, export antenna to transmitting the composite video signal amplification on the coaxial cable, the utility model has not solved in supervisory control system and need connect up, no Surveillance center, random strong problem.

Description of drawings: Fig. 1 is a circuit block diagram of the present utility model.

Fig. 2 is circuit theory diagrams of the present utility model.

Fig. 3 is the circuit theory diagrams of remote controller of the present utility model.

Embodiment: the cable composite video signal transponder that a kind of remote control opens and closes, wireless data receives a control signal that the reception remote controller sends, and send to coaxial cable by inductance L 1 after by control data shaping output circuit the control data received being amplified shaping, the L2 that is connected on the coaxial cable receives by the control data of transmission over coaxial cable and with its shaping, and the control of handing over the response of gating decoding control circuit to be associated with it, selected by after the picture signal and the acoustic scene tone signal of input is modulated into composite video signal and outputs on the coaxial cable, be connected the composite video signal amplifying circuit on the coaxial cable, export antenna to transmitting the composite video signal amplification on the coaxial cable.Power supply is connected with the work station code switch, and the work station code switch is provided with the unique control coding corresponding with remote controller, and the output of work station code switch is connected with the gating decoding control circuit.

Described remote controller is that wireless data sends 1 input and is connected with the data output end of encoder DV5026, the power supply of wireless data transtation mission circuit is connected with the capacitor C of booster circuit 2, inductance L, fast recovery diode D, transistor B1, B2, capacitor C 1, C2, C3, resistance R 3, R4, the power supply booster circuit that R5 and oscillating circuit JH100 form, the power supply booster circuit sends with wireless data and links to each other, adjusting potentiometer W is connected with the B1 base stage, power supply booster circuit R5 links to each other with the AT89C2051 single-chip microcomputer, numeric keypad 2 is connected with the geocoding line of encoder DV5026, be in parallel with the input interface of AT89C2051 single-chip microcomputer, LCD 3 is connected with the AT89C2051 single-chip microcomputer, button V1, V2, V3, V4 is the function operating key of remote controller.

Data pulse from the output of wireless data receiver module, be input to transistor B1 through capacitor C 2, R1 is connected on the base stage and power supply+5V of transistor B1, R3 is connected on the base stage of transistor B2, the signal that is exaggerated on R2 outputs to transistor B2 through capacitor C 3, inductance L 1 outputs to coaxial cable with the data-signal on the R4, inductance L 2 is connected on the coaxial cable, by capacitor C 4 remote signal on the circuit is sent to transistor B3, resistance R 5 is connected on the base stage and power supply+5V of transistor B3, the signal that is exaggerated on resistance R 6 is given transistor B4 by the R7 coupling, amplify the data input pin that outputs to decoder DV5027 by transistor B4, R8 is connected on the collector electrode of transistor B4, resistance R 10 is oscillation resistances of decoder DV5027, the data output end of decoder DV5027 is connected with the base stage of resistance R 9 with transistor B5, the collector electrode of transistor B5 connects control relay J, when transistor B5 turn-on relay J adhesive, its contact is connected to coaxial cable with the composite video signal of modulation, composite video signal on the coaxial cable is input to μ pC1651 through capacitor C 1 amplifies, through capacitor C 6 to transmission antennas transmit.

Power transformer BT1 will be connected to the 220V alternating voltage and change 9V output into, export 5V through rectification circuit and capacitor C 6 filtering through 7805 Voltage stabilizing modules, be connected to the positive source input of image workstation.

Wireless data receiver module in the image workstation is the accepted standard interface product, operating frequency can be selected 315M or 433M (with the supporting use of sending module) for use, by what remote controller sent image workstation is selected signal by its reception, the code signal that receives is sent to B1 through C2 and carries out the shaping amplification, be coupled to B2 by C3 and carry out impedance conversion, sent to coaxial cable by inductance L 1, other image workstation that satisfies being connected on the coaxial cable transmits remote-control data.

The remote-control data receiving circuit of forming by L2, C4, B3, B4, to amplify from the remote-control data that coaxial cable is received and deliver to the DB5027 decoding circuit, decoder DB5027 can pass through code switch, determine the controlled uniqueness of this image workstation, if remote signal is corresponding with this image workstation, the data output of DB5027 will have high level output, control B5 conducting, it is moving that relay J is inhaled, full television identical signal is transmitted in coaxial cable, assist to transmit for other image workstation, full television image signal source is provided.

The wideband video amplifying circuit of being made up of C1 and μ PC1651 will amplify and by antenna output, for portable television receiver provides enough received field strengths from the composite video signal that coaxial cable receives.

The 220V AC power that power circuit provides train converts stable 5V direct current output to, satisfies the need of work of image workstation.

Wireless data sending module accepted standard product in the remote controller, satisfying 315M or the 433M (with the supporting use of receiver module) of selecting for use of operating frequency, the power supply booster circuit of being made up of inductance L, fast recovery diode D, transistor B1, B2, capacitor C 1, C2, C3, resistance R 3, R4, R5 and oscillating circuit JH100 provides the working power of 12V for the wireless data sending module, by adjusting potentiometer W, can change voltage output value, this circuit is subjected to Single-chip Controlling, when not having data to send, circuit working is at sleep mode.

Numeric keypad is connected with the geocoding of coding circuit DV5026, for providing, the operator controls environment, monitor the operation of user with the AT89C2051 single-chip microcomputer that numeric keypad is in parallel to keyboard, data output for DV5026 timely provides corresponding operating, and provide control for the power supply booster circuit, the AT89C2051 single-chip microcomputer shows the operating result that uses by the liquid crystal digital screen.Button V1, V2, V3, V4 are the function operating keys of remote controller, and R1 is the oscillation resistance of DV5026 coding circuit, and its numerical value is consistent with the adapted resistance R 10 of decoder.

Claims (3)

1, the cable composite video signal transponder that a kind of remote control opens and closes, it is characterized in that: comprise the remote signal reception antenna, wireless data receives, control data shaping output, control data receives, the work station code switch, the gating decoding control circuit, composite video signal modulation output, composite video signal is amplified output, TV signal transmitting antenna and remote controller are formed, the wireless data received signal sends to coaxial cable by inductance L 1 after by control data shaping output circuit the control data of receiving being amplified shaping, the L2 that is connected on the coaxial cable receives by the control data of transmission over coaxial cable and with its shaping, and hand over the gating decoding control circuit to respond control corresponding with it, behind the gating picture signal and the audio signal of input is modulated into composite video signal and outputed on the coaxial cable, be connected the composite video signal amplifying circuit on the coaxial cable, export antenna to transmitting the composite video signal amplification on the coaxial cable.Power supply is connected with the work station code switch, and the work station code switch is provided with the control coding corresponding with remote controller, and the output of work station code switch is connected with the gating decoding control circuit.

2, the cable composite video signal transponder that a kind of remote control according to claim 1 opens and closes, it is characterized in that: described remote controller is that wireless data transmission input is connected with the data output end of encoder DV5026, the power supply of wireless data transtation mission circuit is connected with the capacitor C of booster circuit 2, inductance L, fast recovery diode D, transistor B1, B2, capacitor C 1, C2, C3, resistance R 3, R4, the power supply booster circuit that R5 and oscillating circuit JH100 form, the power supply booster circuit sends with wireless data and links to each other, adjusting potentiometer W is connected with the B1 base stage, power supply booster circuit R5 links to each other with the AT89C2051 single-chip microcomputer, numeric keypad is connected with the geocoding line of encoder DV5026, be in parallel with the input interface of AT89C2051 single-chip microcomputer, LCD is connected with the AT89C2051 single-chip microcomputer, button V1, V2, V3, V4 is the function operating key of remote controller.

3, the cable composite video signal transponder that a kind of remote control according to claim 1 opens and closes, it is characterized in that: from the data pulse of wireless data receiver module output, be input to transistor B1 through capacitor C 2, R1 is connected on the base stage and power supply+5V of transistor B1, R3 is connected on the base stage of transistor B2, the signal that is exaggerated on R2 outputs to transistor B2 through capacitor C 3, inductance L 1 outputs to coaxial cable with the data-signal on the R4, inductance L 2 is connected on the coaxial cable, by capacitor C 4 remote signal on the circuit is sent to transistor B3, resistance R 5 is connected on the base stage and power supply+5V of transistor B3, the signal that is exaggerated on resistance R 6 is given transistor B4 by the R7 coupling, amplify the data input pin that outputs to decoder DV5027 by transistor B4, R8 is connected on the collector electrode of transistor B4, resistance R 10 is oscillation resistances of decoder DV5027, the data output end of decoder DV5027 is connected with the base stage of resistance R 9 with transistor B5, the collector electrode of transistor B5 connects control relay J, when transistor B5 turn-on relay J adhesive, its contact is connected to coaxial cable with the composite video signal of modulation, composite video signal on the coaxial cable is input to μ pC1651 through capacitor C 1 amplifies, through capacitor C 6 to transmission antennas transmit.

Power transformer BT1 will be connected to the 220V alternating voltage and change 9V output into, export 5V through rectification circuit and capacitor C 6 filtering through 7805 Voltage stabilizing modules, be connected to the positive source input of image workstation.