CN204145644U - A kind of HD-SDI supply power coaxially DVR - Google Patents

Abstract

The utility model discloses a kind of HD-SDI supply power coaxially DVR, comprise casing structure, hardware, software and control circuit, wherein control circuit is divided into synchro switch reduction voltage circuit, SDI/POC powers split circuit and chip control circuit, DC24V power supply to be powered split circuit through SDI/POC, use coaxial cable to be powered to the high-definition camera of band POC function by HD-SDI/POC interface, receive HD-SDI signal by same coaxial cable, and two kinds of signals can not interfere with each other simultaneously.The utility model meets the demand of current monitor system by coaxial transmission HD video and power supply, is to cater to the development of current safety monitoring industry and the DVR of high definition memory device HD-SDI that powers of the band POC released.

Description

A kind of HD-SDI supply power coaxially DVR

Technical field

The utility model relates to protection and monitor field, specifically a kind of HD-SDI supply power coaxially DVR.

Background technology

At present, high-definition monitoring system all uses traditional supply power mode, and front-end camera generally uses DC12V power supply, generally has two kinds of supply power modes: one is that front-end camera is independently-powered, need to set up 220V power supply nearby, then convert the DC12V power supply of needs to by power supply adaptor; Two is centrally connected power supplies, places high power D C12V power supply, then by cable transfer to front-end camera, have how many video cameras will set up the transmission line of how many power supplys at Control Room; Which kind of mode all can increase difficulty of construction, especially in some buildings as spilt shop, mansion, difficulty of construction more can be multiplied.

Utility model content

The purpose of this utility model is to provide the HD-SDI supply power coaxially DVR that a kind of cost is low, difficulty of construction is low, to solve the problem proposed in above-mentioned background technology.

For achieving the above object, the utility model provides following technical scheme:

A kind of HD-SDI supply power coaxially DVR, comprise cabinet, hardware and control circuit, described cabinet inside is provided with mainboard, mainboard is connected with the DC12VC socket be fixed in case side wall, RS485 socket, RJ45 connector, HDMI socket, CVBS socket, audio socket, HD-SDI/POC socket and DC24V/POC power supply base, described RS485 socket is connected with spherical pan head video camera;

Described hardware comprises power supply adaptor, HD-SDI/POC interface and chip SOC, power supply adaptor is connected by power with storage/playback system, signal/POC respectively split circuit, chip Equalizer, chip FPGA and chip SOC of electric power system, described HD-SDI/POC interface is connected with chip SOC by power split circuit, chip Equalizer, chip FPGA of signal/POC successively, and chip SOC is connected with storage/playback system and video output system respectively;

Described control circuit comprises synchro switch reduction voltage circuit, SDI/POC powers split circuit and chip control circuit;

In described synchro switch reduction voltage circuit, the POC signal exported by camera acquisition is respectively by inductance FB80, inductance FB76 and exclusion R254 is connected in inductance L 9 jointly, connect successively between inductance L 9 and exclusion R254 exclusion R258 and and mend electric capacity C305, inductance L 9 other end connects the S end of field effect transistor QM2 by inductance L 8, the D end of field effect transistor QM2 connects exclusion R139 and fuse F29 respectively, the fuse F29 other end connect respectively voltage signal DC24V and and mend electric capacity C301, the G end of field effect transistor QM2 connects exclusion R136 and the exclusion R139 other end respectively, the collector electrode of exclusion R136 other end connecting triode Q5, the base stage of triode Q5 connects exclusion R53, the exclusion R53 other end is connection signal PSC_ENO and exclusion R33 respectively, exclusion R33 other end connection signal 3V3,

Described signal/POC HD-SDI signal in split circuit of powering connects inductance L 16 and exclusion R258 respectively by HD-SDI/POC interface, inductance L 16 is connected electric capacity C325 with the exclusion R258 other end, and the electric capacity C325 other end connects the exclusion R272 of the pin two of chip SOC, the diac of ground connection and ground connection respectively;

In described chip control circuit, chip SOC pin 3 connects the exclusion R271 of electric capacity C329 and ground connection respectively, the electric capacity C329 other end connects the exclusion R270 of ground connection, pin 5 is by exclusion R276 connection signal LFin_CH1, pin one 0 and pin one 1 are connected electric capacity C330 and electric capacity C326 respectively and are exported by SDI differential signal, pin one 3 is connected respectively with pin one 6 and mends electric capacity C319, and mend electric capacity C320, and mend electric capacity C321 and inductance FB88, pin one 4 connects the exclusion R266 of exclusion R264 and ground connection respectively, the exclusion R264 other end connects pin 15 and light-emitting diode D5 negative pole respectively, the positive pole of light-emitting diode D5 connects exclusion R262.

As the utility model further scheme: the model of described chip SOC is EQCO30R5.

Compared with prior art, the beneficial effects of the utility model are: the utility model can use coaxial cable generally to have function of supplying power can transmit high-definition video signal again, make front end high definition video camera not by power taking environmental limitations, optimize routing network, reduce Material Cost and cost of labor, reduce cable wiring manufacture difficulty.

Accompanying drawing explanation

Fig. 1 is the structural representation of HD-SDI supply power coaxially DVR.

Fig. 2 is the hardware designs schematic diagram in HD-SDI supply power coaxially DVR.

Fig. 3 is the circuit controling drawing of HD-SDI supply power coaxially DVR.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1 ~ 3, in the utility model embodiment, a kind of HD-SDI supply power coaxially DVR, comprise cabinet, hardware and control circuit, described cabinet inside is provided with mainboard, mainboard is connected with the DC12VC socket be fixed in case side wall, RS485 socket, RJ45 socket, HDMI socket, CVBS socket, audio frequency are inserted, HD-SDI/POC socket and DC24V/POC power supply base; Described hardware comprises power supply adaptor, HD-SDI/POC interface and chip SOC, power supply adaptor is connected by power with storage/playback system, signal/POC respectively split circuit, chip Equalizer, chip FPGA and chip SOC of electric power system, described HD-SDI/POC interface is connected with chip SOC by power split circuit, chip Equalizer, chip FPGA of signal/POC, and chip SOC is connected with storage/playback system and video output system respectively.Described RS485 socket is connected with spherical pan head video camera and realizes the controls such as rotation, zoom, compressing video frequency flow can be transferred to internet by RJ45 socket, remote access is carried out by computer, video picture is shown on monitor by CVBS socket by HDMI/VGA/CVBS interface, audio interface can carry out recording and the playback of sound by audio socket, and HD-SDI interface can receive high-definition video signal and POC powers.

Refer to Fig. 2, DC24V power supply outputs to bnc interface by electric power system from SDI/POC split circuit, coaxial cable is used namely to power to the high-definition camera of band POC function by HD-SDI/POC interface, receive HD-SDI signal by same coaxial cable simultaneously, and two kinds of signals can not interfere with each other, HD-SDI signal converts single-ended signal to high speed serial differential signal through chip Equalizer, BT.656 parallel video format signal is converted to after fpga chip process, deliver to master chip SOC, HD-SDI signal can be converted to HDMI or VGA signal and output to monitor by video output system and carry out live view preview by master chip SOC, now preview screen is not compression high definition picture, H.264 compression coding is carried out to picture signal simultaneously, be stored on hard disk, when needs check in the past picture signal time, data in hard disk are carried out decompressing and outputs to monitor again.Power-supply management system can convert the DC12V that power supply adaptor is come to required various voltages, uses DC/DC synchro switch reduction voltage circuit ensure that the stability of voltage and keep lower idle power consumption.This power circuit built-in electronic switch, also can turn off POC and power, and connects the HD-SDI video camera not with POC function, reaches compatible object.

Refer to Fig. 3, control circuit comprises synchro switch reduction voltage circuit, SDI/POC powers split circuit and chip control circuit, in synchro switch reduction voltage circuit, the POC signal exported by camera acquisition is respectively by inductance FB80, inductance FB76 and exclusion R254 is connected in inductance L 9 jointly, connect successively between inductance L 9 and exclusion R254 exclusion R258 and and mend electric capacity C305, inductance L 9 other end connects the S end of field effect transistor QM2 by inductance L 8, the D end of field effect transistor QM2 connects exclusion R139 and fuse F29 respectively, the fuse F29 other end connect respectively voltage signal DC24V and and mend electric capacity C301, the G end of field effect transistor QM2 connects exclusion R136 and the exclusion R139 other end respectively, the collector electrode of exclusion R136 other end connecting triode Q5, the base stage of triode Q5 connects exclusion R53, the exclusion R53 other end is connection signal PSC_ENO and exclusion R33 respectively, exclusion R33 other end connection signal 3V3.

Signal/POC HD-SDI signal in split circuit of powering connects inductance L 16 and exclusion R258 respectively by HD-SDI/POC interface, inductance L 16 and exclusion R258; The other end connects electric capacity C325, and the electric capacity C325 other end connects the exclusion R272 of the pin two of chip SOC, the diac of ground connection and ground connection respectively.

In chip control circuit, chip SOC pin 3 connects the exclusion R271 of electric capacity C329 and ground connection respectively, the electric capacity C329 other end connects the exclusion R270 of ground connection, pin 5 is by exclusion R276 connection signal LFin_CH1, pin one 0 and pin one 1 are connected electric capacity C330 and electric capacity C326 respectively and are exported by SDI differential signal, pin one 3 is connected respectively with pin one 6 and mends electric capacity C319, and mend electric capacity C320, and mend electric capacity C321 and inductance FB88, pin one 4 connects the exclusion R266 of exclusion R264 and ground connection respectively, the exclusion R264 other end connects pin 15 and light-emitting diode D5 negative pole respectively, the positive pole of light-emitting diode D5 connects exclusion R262.

The utility model can use coaxial cable generally to have function of supplying power can transmit high-definition video signal again, makes front end high definition video camera not by power taking environmental limitations, optimizes routing network, reduce Material Cost and cost of labor, reduce cable wiring manufacture difficulty.

To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.

Claims (2)

1. a HD-SDI supply power coaxially DVR, comprises cabinet, hardware and control circuit, it is characterized in that,

Described cabinet inside is provided with mainboard, mainboard is connected with the DC12VC socket be fixed in case side wall, RS485 socket, RJ45 socket, HDMI socket, CVBS socket, audio socket, HD-SDI/POC socket and DC24V/POC power supply base, described RS485 socket is connected with spherical pan head video camera;

Described hardware comprises power supply adaptor, HD-SDI/POC interface and chip SOC, power supply adaptor is connected by power with storage/playback system, signal/POC respectively split circuit, chip Equalizer, chip FPGA and chip SOC of electric power system, described HD-SDI/POC interface is connected with chip SOC by power split circuit, chip Equalizer, chip FPGA of signal/POC successively, and chip SOC is connected with storage/playback system and video output system respectively;

Described control circuit comprises synchro switch reduction voltage circuit, SDI/POC powers split circuit and chip control circuit;

In described synchro switch reduction voltage circuit, the POC signal exported by camera acquisition is respectively by inductance FB80, inductance FB76 and exclusion R254 is connected in inductance L 9 jointly, connect successively between inductance L 9 and exclusion R254 exclusion R258 and and mend electric capacity C305, inductance L 9 other end connects the S end of field effect transistor QM2 by inductance L 8, the D end of field effect transistor QM2 connects exclusion R139 and fuse F29 respectively, the fuse F29 other end connect respectively voltage signal DC24V and and mend electric capacity C301, the G end of field effect transistor QM2 connects exclusion R136 and the exclusion R139 other end respectively, the collector electrode of exclusion R136 other end connecting triode Q5, the base stage of triode Q5 connects exclusion R53, the exclusion R53 other end is connection signal PSC_ENO and exclusion R33 respectively, exclusion R33 other end connection signal 3V3,

Described signal/POC HD-SDI signal in split circuit of powering connects inductance L 16 and exclusion R258 respectively by HD-SDI/POC interface, inductance L 16 is connected electric capacity C325 with the exclusion R258 other end, and the electric capacity C325 other end connects the exclusion R272 of the pin two of chip SOC, the diac of ground connection and ground connection respectively;

In described chip control circuit, chip SOC pin 3 connects the exclusion R271 of electric capacity C329 and ground connection respectively, the electric capacity C329 other end connects the exclusion R270 of ground connection, pin 5 is by exclusion R276 connection signal LFin_CH1, pin one 0 and pin one 1 are connected electric capacity C330 and electric capacity C326 respectively and are exported by SDI differential signal, pin one 3 is connected respectively with pin one 6 and mends electric capacity C319, and mend electric capacity C320, and mend electric capacity C321 and inductance FB88, pin one 4 connects the exclusion R266 of exclusion R264 and ground connection respectively, the exclusion R264 other end connects pin 15 and light-emitting diode D5 negative pole respectively, the positive pole of light-emitting diode D5 connects exclusion R262.

2. HD-SDI supply power coaxially DVR according to claim 1, is characterized in that, the model of described chip SOC is EQCO30R5.