CN201060411Y - Multi-protocol video terminal decoder - Google Patents
Multi-protocol video terminal decoder Download PDFInfo
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- CN201060411Y CN201060411Y CNU200720019653XU CN200720019653U CN201060411Y CN 201060411 Y CN201060411 Y CN 201060411Y CN U200720019653X U CNU200720019653X U CN U200720019653XU CN 200720019653 U CN200720019653 U CN 200720019653U CN 201060411 Y CN201060411 Y CN 201060411Y
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- cloud terrace
- control circuit
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Abstract
The utility model relates to a multi-protocol video terminal decoder, which consists of a MCU and a power module. The input end of the MCU is respectively connected with a reset circuit, a DIP switch and a communication interface circuit. The output of the MCU is connected with a camera control circuit, a holder control circuit and other peripheral control circuits in parallel. The utility model has the advantages that a control circuit made up of the MCU, a simple digital chip and a relay is applied to produce corresponding control voltage after the control orders transmitted from the remote are confirmed and decoded, thereby achieving convenient control on a variety of terminal equipment, and being reliable, efficient, economical and practical.
Description
(1) technical field
The utility model relates to the control system of the The Cloud Terrace camera in the monitoring field, particularly a kind of multi-protocols video terminal demoder that is used to adjust camera position and the action of control motor-driven lens.
(2) background technology
In supervisory system, the action of control The Cloud Terrace and motor-driven lens is a part and parcel.The control point of laying The Cloud Terrace and camera lens generally speaking is far away apart from master-control room, manual control operation The Cloud Terrace and camera lens, waste time and energy, and directly transmit the not only uneconomical but also a lot of energy losses of a plurality of control voltages on transmission cable with the cable of multicore, therefore designing a kind of reliable, efficient, economical and practical The Cloud Terrace camera lens opertaing device is urgent demand.Extensively adopt 2 core cables to carry out the remote transmission of control command at present, this just need install decoding device near terminal device, the long-range control command that transmits is decoded, be converted into control corresponding voltage, control various terminal devices such as The Cloud Terrace, camera lens, rain brush, lampshade etc.
(3) summary of the invention
The utility model is in order to remedy the deficiencies in the prior art, the multi-protocols video terminal demoder that provides a kind of and can confirm the control command that main frame sends over, decode the back that terminal device is controlled.
The utility model is achieved by the following technical solution:
Multi-protocols video terminal demoder of the present utility model, its special character is: comprise single-chip microcomputer and power module, the input end of single-chip microcomputer is connected with reset circuit, toggle switch, communication interface circuit respectively, and the output terminal of single-chip microcomputer is parallel with lens control circuit, cradle head control circuit and other peripheral hardware control circuit by driving circuit.
Multi-protocols video terminal demoder of the present utility model, for the ease of and the host computer of Surveillance center between data transmit, be provided with transceiver and bus connector in the communication interface circuit, be connected with diode and resistance between the two, transceiver is connected with the RXD serial ports with the TXD of single-chip microcomputer and transmits and receive data.
Multi-protocols video terminal demoder of the present utility model, in order to control The Cloud Terrace moving along all directions, be provided with relay in the cradle head control circuit, having a single-pole double-throw switch (SPDT) to select the control power source voltage of The Cloud Terrace in the relay is high level or low level, one end of control power supply connects relay, the other end is connected in the common port of The Cloud Terrace, and a direction control end of The Cloud Terrace directly is connected with relay.
Multi-protocols video terminal demoder of the present utility model, for the adjustment of the zoom of realizing camera lens, focusing, aperture, the control line of every kind of function comprises two relays in the lens control circuit.
The beneficial effects of the utility model are, use single-chip microcomputer and simple numerical chip and relay and form control circuit, send control corresponding voltage after the control command that remote transmission is come confirmed, decodes, easily multiple terminal device is controlled, reliable for effect, efficient, economical and practical.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing is a structural representation of the present utility model.
Fig. 1 is The Cloud Terrace camera control system figure, and Fig. 2 is hardware system structure figure, and Fig. 3 is the communication interface circuit, and Fig. 4 is the cradle head control circuit, and Fig. 5 is a lens control circuit, and Fig. 6 is a workflow diagram.
Among the figure, 1 single-chip microcomputer, 2 driving circuits, 3 reset circuits, 4 toggle switchs, 5 communication interface circuit, 6 power modules, 7 lens control circuits, 8 cradle head control circuit, 9 other peripheral hardware control circuits, A1 transceiver, J16 bus connector.
(5) embodiment
Accompanying drawing 1-6 is a kind of specific embodiment of the present utility model.
Multi-protocols video terminal demoder of the present utility model, shown in Figure 1 is The Cloud Terrace camera control system, principle of work is: the host computer of Surveillance center is by the RS-485 bus, control command is transferred to a plurality of demoders, after demoder receives order, send control corresponding voltage after confirming, decoding, control electronics camera lens or The Cloud Terrace or other peripheral hardwares.Demoder links to each other with host computer by the RS-485 bus, and connection is preferably selected Shielded Twisted Pair for use, and connected mode is a bus-type.For different RS-485 transmitters, connect the number difference of demoder on its bus, consider driving force and reliability, advising using in the system can not be above 30.
Fig. 2 is a hardware system.Single-chip microcomputer 1 is the control core of demoder, the host computer of Surveillance center is sent out the demoder that communication data is given the scene of being positioned at by 485 control buss, demoder receives data by communication interface circuit 5 and is sent in the single-chip microcomputer 1, control commands corresponding is deciphered and sent to single-chip microcomputer 1 after receiving communication command, by driving circuit 2, controls lens control circuit 7 or cradle head control circuit 8 or other peripheral hardware control circuits 9, output control corresponding voltage, controls lens, The Cloud Terrace or other peripheral hardwares are made corresponding action.The main effect of reset circuit 3 is to provide reliable reset signal for single-chip microcomputer 1.Toggle switch 4 has three main purposes: the physical address of determining demoder; The baud rate of specified data transmission; Determine employed agreement.The chip that mainly act as of power module 6 provides operating voltage, is The Cloud Terrace, and camera lens and the action of other peripheral hardware provide power of alterating and direct current.
Fig. 3 is a communication interface circuit 5, and the J16 among the figure is the connector of RS-485 bus, and A1 is RS485 transceiver 75LBC184.Data between the host computer of demoder and Surveillance center transmit through RS485 transceiver 75LBC184, are transmitted and receive data by the TXD and the RXD serial ports of single-chip microcomputer.
Fig. 4 is a cradle head control circuit 8, and The Cloud Terrace is the equipment that is used for fixing motor-driven lens.Just reached the purpose of control camera direction by control to the The Cloud Terrace direction.The Cloud Terrace generally all has four direction of motion in upper and lower, left and right, and can rotate automatically.So The Cloud Terrace has 5 control ends and a common port.When exchanging 24V (perhaps 220V) voltage between a control end and the common port, then The Cloud Terrace is to the direction motion of control end correspondence.With a direction control end is the control principle of example explanation The Cloud Terrace.In Fig. 4, the control voltage of The Cloud Terrace can select to exchange 24V or alternating current 220V by single-pole double-throw switch (SPDT).The input end that one end of interchange control voltage is connected in cradle head control voltage is the 1st leg of relay, and the other end of alternating voltage is connected in the common port of The Cloud Terrace.3 legs of relay are that the output terminal of cradle head control voltage links to each other with a direction control end of The Cloud Terrace.Be connected with capacitor C 11 and resistance R 12 between the 1st leg of relay and the 3rd leg.When the Single-chip Controlling lead leg was output as high level, control signal was by driving circuit, 1,3 leg conductings of pilot relay at Fig. 2.Then cradle head control voltage output end and The Cloud Terrace common port have control voltage, and The Cloud Terrace begins action.Opposite 1,3 legs breaks of relay are opened when the Single-chip Controlling lead leg is output as low level, and then The Cloud Terrace does not have control voltage, and The Cloud Terrace stops operating.
Fig. 5 is the control circuit 7 of camera lens, and the control of camera lens mainly is the adjustment that realizes camera lens zoom, focusing, aperture.Three variable lenses control voltage generally between ± 6-± 12v.It has 4 control lines, i.e. zoom control line ZOOM, aperture control line IRIS, focus control line FOCUS and common port COM.Each control line and common port are formed the control corresponding function.Its physical circuit figure is example at this with the aperture circuit as shown in Figure 5.3,6 legs of relay 1 are normally closed contact, and 4,5 is normal opened contact, and 7 legs are connected on the deflection machine, can obtain adjustable voltage 6V-12V.In the relay 25 is normally closed contact, and 2 is normal opened contact.After 3,5 legs of figure repeat circuit 1 link to each other, link common port COM end.4,6 legs of relay 1 link to each other, and link on 2 legs of relay 2, promptly on the normal opened contact.The 4th leg of relay 2 is connected on the aperture control line.Its principle of work is as follows: control signal 2 is 1 o'clock, through overdrive circuit, is reversed zero, and the switch of relay 2 is got on the normal opened contact, and the output lead leg 4 of aperture control voltage and 4,6 legs of relay 1 link to each other.When control signal 1 is 0, behind overdrive circuit, be reversed 12V, relay 1, switch is failure to actuate, and rests on the normally closed contact.At this moment common port COM end links to each other with ground, and the voltage output end of control aperture links to each other with the voltage on the deflection machine, has positive electricity pressure reduction at aperture and common port COM end, and the control aperture becomes big.When control signal 1 is 1, behind overdrive circuit, be reversed 0V, relay 1, switch motion is got on the normal opened contact.At this moment common port COM end and the voltage on the deflection machine link to each other, and the voltage output end of control aperture links to each other with ground, hold at aperture and common port COM to have negative electricity pressure reduction, control aperture and diminish.Control signal 1 and 2 is 0 o'clock all, through overdrive circuit, is reversed 12V, and the switch of relay 1,2 is failure to actuate, and rests on the normally closed contact.At this moment common port COM end links to each other with ground, and the voltage output end of control aperture and 4 legs of relay link to each other, and does not exist voltage difference, aperture to stop to change at aperture and common port COM end.
Fig. 6 is software workflow figure, accept data by serial ports, determine the used agreement of user, close the baud rate that definite serial ports is accepted data according to toggle switch according to toggle switch, determine the address of camera according to toggle switch, carry out the action of protocol conversion control peripheral hardware.The order that the host computer of Surveillance center sends over to microcontroller serial port, has single-chip microcomputer to receive by the communication interface circuit transmission.The kind of agreement is determined by toggle switch.Single-chip microcomputer has been determined used agreement after reading the state of toggle switch of decision protocol type, calls different protocol conversions, command decode program after receiving order.This utility model is supported three kinds of baud rates: 2400,4800,9600, and on hardware, there are two toggle switchs to decide.The state difference of toggle switch, selected baud rate difference.Single-chip microcomputer is read the state of these two toggle switchs and has just been determined the baud rate of data transmission.The address that 8 toggle switch decision The Cloud Terrace cameras are arranged on hardware.Single-chip microcomputer is determined The Cloud Terrace camera address according to the state of toggle switch, has only the address of working as address and this The Cloud Terrace self decision in the order that receives consistent, and the output control voltage of just can decoding allows The Cloud Terrace or camera lens or other peripheral hardwares move.After single-chip microcomputer receives order, verification, affirmation are carried out in order, decoded, send out control commands corresponding, control Driver Circuit output control corresponding voltage by the I/O mouth according to control command.
Claims (4)
1. multi-protocols video terminal demoder, it is characterized in that: comprise single-chip microcomputer (1) and power module (6), the input end of single-chip microcomputer is connected with reset circuit (3), toggle switch (4), communication interface circuit (5) respectively, and the output terminal of single-chip microcomputer is parallel with lens control circuit (7), cradle head control circuit (8) and other peripheral hardware control circuit (9) by driving circuit (2).
2. multi-protocols video terminal demoder according to claim 1, it is characterized in that: be provided with transceiver (A1) and bus connector (J16) in the communication interface circuit, be connected with diode and resistance between the two, transceiver is connected with the RXD serial ports with the TXD of single-chip microcomputer and transmits and receive data.
3. multi-protocols video terminal demoder according to claim 1 and 2, it is characterized in that: be provided with relay in the cradle head control circuit, having a single-pole double-throw switch (SPDT) to select the control power source voltage of The Cloud Terrace in the relay is high level or low level, one end of control power supply connects relay, the other end is connected in the common port of The Cloud Terrace, and a direction control end of The Cloud Terrace directly is connected with relay.
4. multi-protocols video terminal demoder according to claim 1 and 2 is characterized in that: the control line of every kind of function comprises two relays in the lens control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720019653XU CN201060411Y (en) | 2007-03-21 | 2007-03-21 | Multi-protocol video terminal decoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720019653XU CN201060411Y (en) | 2007-03-21 | 2007-03-21 | Multi-protocol video terminal decoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201060411Y true CN201060411Y (en) | 2008-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720019653XU Expired - Fee Related CN201060411Y (en) | 2007-03-21 | 2007-03-21 | Multi-protocol video terminal decoder |
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| CN (1) | CN201060411Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011109978A1 (en) * | 2010-03-12 | 2011-09-15 | 中兴通讯股份有限公司 | Method and terminal for controlling lens |
| CN102629987A (en) * | 2012-04-10 | 2012-08-08 | 西北工业大学 | Small-sized airborne camera controller |
| CN106886183A (en) * | 2017-04-10 | 2017-06-23 | 天津市联大通讯发展有限公司 | Industrial heavy-load camera system control panel |
| WO2022082950A1 (en) * | 2020-10-23 | 2022-04-28 | 福州富昌维控电子科技有限公司 | Method for improving device serial communication efficiency and terminal |
-
2007
- 2007-03-21 CN CNU200720019653XU patent/CN201060411Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011109978A1 (en) * | 2010-03-12 | 2011-09-15 | 中兴通讯股份有限公司 | Method and terminal for controlling lens |
| CN102629987A (en) * | 2012-04-10 | 2012-08-08 | 西北工业大学 | Small-sized airborne camera controller |
| CN106886183A (en) * | 2017-04-10 | 2017-06-23 | 天津市联大通讯发展有限公司 | Industrial heavy-load camera system control panel |
| CN106886183B (en) * | 2017-04-10 | 2023-05-16 | 天津市联大通讯发展有限公司 | Industrial heavy-duty camera system control board |
| WO2022082950A1 (en) * | 2020-10-23 | 2022-04-28 | 福州富昌维控电子科技有限公司 | Method for improving device serial communication efficiency and terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080514 |