CN1117703A - Dispatching command system - Google Patents

Abstract

The dispatching command system is suitable for locale dispatching and monitoring in office, industrial site, national defence, public security and finance. It uses telephone signal to achieve video communication, dispatching and command. It also uses single wire connection and has sham hang-on function.

Description

Dispatching and command system

The floor manager in fields such as dispatching and command system of the present invention is used to handle official business, industrial environment, public security, national defence, finance, scheduling and field monitor.

Along with the development of suitability for industrialized production, the manager will understand at any time that each office is on-the-spot, the working condition in industrial production line and other field, so that the grasp situation, formulate step work plan down, and in time handles on-the-spot problem.Traditional industrial dispatching patcher adopt a plurality of displays will be in diverse location the monitoring camera collection signal parallel or be presented at selectively on the tv screen wall in the control room, bulky, connect complicatedly, cost is also very expensive; In recent years the picture switch of Chu Xianing can switch by automatic or manual, adopts a screen to show different pictures constantly in difference, has solved the volume problem to a certain extent, but still needs to adopt the parallel mode of connection, installs also very complicated.Existing dispatching patcher also has a common defective, promptly all need a console carries out Comprehensive Control to system operation, need special messenger's learning manipulation and on duty, be not suitable for the manager particularly decision of the senior level person directly use, cause the efficiency of management to reduce.

The purpose of this invention is to provide and a kind ofly control with telephone signal, single line connects, and can carry out video communication, dispatch control, the dispatching and command system of field monitor.

The present invention has adopted the technology of retaining with telephone signal control of video signal, send simultaneously at the phone number key signals, decoding circuit translates corresponding video frequency channel according to this signal that main caller sends, by the automatic unlatching of the switching circuit in the Video Controller and maintenance and corresponding display of callee and camera watch lens, after described caller plucks telephone set, both sides' image appears in the display on both sides simultaneously, can carry out the dual communication of audio frequency, video.Described main caller and described callee all can hang up the telephone at any time, and described display and camera watch lens are closed simultaneously.

Consider the needs of field monitor, the present invention has adopted pseudo-off-hook technology.When user's desire is carried out real time monitoring to a certain scene, can send the telephone number that is monitored a little, the monitoring monitor unit is that the off hook signal of a simulation of loopback is pseudo-off hook signal after receiving telephone signal.Described sound, video loop by the prison point connected automatically, can carry out field monitor, in monitoring process, can carry out controls such as orientation and aperture focal length to the electric platform that is loaded with camera watch lens by phone plane No. key, to see on-the-spot situation everywhere easily.

Another characteristics of the present invention are to adopt the single line type of attachment.Because control line has adopted existing telephone wire, only for videotaping and two single lines of image transmission, the gating of correspondent is then carried out by set program in the controller, has simplified the wiring method of traditional scheduler system, makes to install to simplify in other wiring of system, and cost reduces.

The present invention has following accompanying drawing:

Fig. 1 is a principle of the invention block diagram.

Fig. 2 is the program flow diagram of middle controller of the present invention.

Fig. 3 is a single line type of attachment schematic diagram of the present invention.

Fig. 4 is the schematic diagram of pseudo-handoff functionality among the present invention.

As can be seen from Figure 1, when caller's any one number of transfering to desire to connect by 1-n in the telephone set 102, exchange translates corresponding passage with decoding unit 101, this passage telephone corresponding speech channel is connected, simultaneously by 103 corresponding Video Controller opening display and camera watch lens, after the callee plucks telephone set, can carry out the bidirectional visual conversation.When any one party is hung up the telephone, display and camera watch lens are closed simultaneously.

Fig. 2 is a director demon flow chart of the present invention, judge 201 by ring, whether the telephone set of judging this controller place circuit is the main phone of exhaling, the main in this way phone of exhaling, then there is not ring, judge 202 by plucking phone, as judge telephone set off-hook, then connect and the maintenance video frequency channel by link 204,205, carry out link 206 described video calls or purpose monitoring work, this moment, program was by the whether on-hook of 207 links checks phone, and after the on-hook, voice-frequency channel cuts off automatically, turn-off video frequency channel, system reset by link 208 simultaneously.Image code is not received at inherent 203 places as the stipulated time, then changes 209,210 over to and generally converses.

If examine to such an extent that the telephone set of this controller place circuit has ring to take place at link 201 places, this telephone set is then connected audio frequency identification circuit link 213 for being exhaled phone.When link 214 has image code, then link 215 is connected two paths of video/audios, carries out video call or purpose monitoring work.

Fig. 3 is the schematic diagram of single line type of attachment of the present invention, in this connection type, except that each telephone set passes through telephone wire 301 same exchanges and decoding unit links to each other, each video control unit 304 also is in parallel with 301, so that according to sending control command after the decoding of the telephone signal on the circuit, different with traditional video connected mode, whole system hangs over to videotape with image to be transmitted on two video single lines 302 and 303, one side's camera is linked to each other alternately with the opposing party's display, reach arbitrarily to the main purpose of exhaling and being carried out video communication between the person of exhaling.

Fig. 4 is the signal of pseudo-handoff functionality among the present invention.When switch element 3 is opened, because the blocking effect of D1, D2, article two, telephone wire is a high-impedance state, be equal to the phone hook state, telephone signal appearance when correspondence, by C1, C2 to signal output 401 and audio decoder 402, produce control signal, carry out program control by monolithic computer, with a conducting signal through resistance R, triode T to switch element J, after the closing of contact, make telephone wire be low resistance state, be equal to the phone off hook state, then produce constant current and keep off hook state, realized pseudo-handoff functionality.Behind the pseudo-off-hook, a constant signal control of video passage is sent in program control 403 simultaneously, and this state can remain to the main side of exhaling always and send before the signal of registering.

Claims (7)

1. dispatching and command system, floor manager, scheduling and the field monitor in fields such as described system is used to handle official business, industrial environment, public security, national defence, finance is characterized in that, are to carry out video communication with telephone signal, dispatch control, each feature operation of field monitor.

2. according to claim 1, described system is characterized in that, when the phone number key signals sends, decoding circuit translates corresponding video frequency channel, switching circuit is opened automatically and is kept corresponding display and camera watch lens work, to carry out audio frequency, the two-way dual communication of video.

3. according to claim 1, described system is characterized in that, has adopted the single line type of attachment to carry out the wiring of system, and described system is articulated in to videotape with image to be transmitted on two video single lines.

4. according to claim 1, described system has pseudo-handoff functionality, to adapt to the needs of real time monitoring.

5. according to claim 2 and 3, described decoding circuit and the control that described switching circuit and described single line are connected are all realized by video control unit.

6. pseudo-handoff functionality according to claim 4 is characterized in that, is by a triode, two diodes, and two capacitors, switch element are finished jointly with control assembly.

7. according to claim 6, described switch element is characterized in that, can be relay, also can be other switching device.

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