CN207908579U - A kind of POC output power detection devices of monitoring device - Google Patents
A kind of POC output power detection devices of monitoring device Download PDFInfo
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- CN207908579U CN207908579U CN201820295808.0U CN201820295808U CN207908579U CN 207908579 U CN207908579 U CN 207908579U CN 201820295808 U CN201820295808 U CN 201820295808U CN 207908579 U CN207908579 U CN 207908579U
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- power
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- poc
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- monitoring device
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Abstract
The utility model proposes a kind of POC output power detection devices of monitoring device, which is integrated with the detection function of POC output powers, and realizes the detection operating power instead of various monitor cameras, and main functional modules include：Sequentially connected coaxial signal split circuit, isolating transformer, Variable power load detecting circuit in device.
Description
Technical field
The present invention relates to a kind of POC output power detection devices of monitoring device, belong to technical field of video monitoring.
Background technology
Coaxial cable refers to and the cable of conductor and the shared same axle center of shielded layer there are two concentric conductor.It is most common
The copper conductors be isolated by insulating materials of coaxial cable form, the outside of inner insulating material be another layer of ring shaped conductor and
Its insulator, then entire cable encased by the sheath of polyvinyl chloride or teflon material.A kind of regarding based on coaxial line of POC
Frequently, coaxial control, the technology of power supply superposition.I.e. transmission high-definition video signal, coaxial signal transmit again in coaxial cable transmission
The signals such as HD video, coaxial and power supply are combined with each other, are transmitted on a coaxial line by power supply.
Currently, although POC function of supplying power often has outfit on simulation monitoring video recorder, in the monitoring of POC function of supplying power
When equipment production test, it is typically only capable to be needed to find the different household monitor camera access of various operating powers by tester
POC powers BNC mouthfuls and is tested, and whether the POC BNC mouthfuls of output powers of power supply for detecting monitoring device meet condition.Such hand
Work test extremely takes time and effort, so there is an urgent need for a kind of more easy detection devices to replace monitor camera, to complete to supervising
Work is verified in the test for controlling POC BNC mouthfuls of output powers of power supply of equipment.
Utility model content
In order to solve the above technical problems, the utility model proposes a kind of POC output power detection devices of monitoring device, it should
Detection device is integrated with the detection function of POC output powers, and realizes the detection operating power instead of various monitor cameras.
Technical solution adopted by the utility model to solve its technical problems is：A kind of POC output powers of monitoring device
Detection device, which is characterized in that including：Sequentially connected coaxial signal split circuit, isolating transformer, Variable power are negative in device
Carry detection circuit；
The coaxial signal split circuit is connected with the bnc interface of device peripheral hardware；
The Variable power load detecting circuit is connected with the power regulation shuttle of device peripheral hardware；
A power supply module is additionally provided in device, for each electronics in device；
The work light of a display POC power supply states and one is additionally provided with outside device to be responsible for showing the LED numbers of magnitude of power
Code pipe display module；
Include a LED digital-scroll technique tube drive circuits in the LED charactrons display module, by LED digital-scroll techniques
The predetermined power of tube drive circuit control shows that LED charactrons, measured power show LED charactrons.
The utility model has the beneficial effects that the power regulation shuttle on the device for passing through the utility model can be simulated
The demand operating power of various household monitor cameras, to complete monitoring device POC output powers test to solve
Carry out that access testing efficiency is low to be lacked by manually finding the household monitor cameras of various operating powers in background technology
It falls into.
Description of the drawings
The attached drawing constituted part of this application is used to provide a further understanding of the present invention, the utility model
Schematic diagram and its explanation are not constituted improper limits to the present invention for explaining the utility model.In the accompanying drawings：
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the schematic diagram of the LED charactrons display module of the utility model；
Fig. 3 is the wiring schematic diagram of the coaxial signal split circuit of the utility model；
Fig. 4 is the wiring schematic diagram of the Variable power load detecting circuit of the utility model；
Fig. 5 is the wiring schematic diagram of the LED digital-scroll technique tube drive circuits of the utility model.
Specific implementation mode
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
The POC output power detection devices of monitoring device as shown in Figure 1, including sequentially connected coaxial signal in device
Split circuit 1, isolating transformer 2, Variable power load detecting circuit 3；
The coaxial signal split circuit 1 is connected with the bnc interface 4 of device peripheral hardware；
The Variable power load detecting circuit 3 is connected with the power regulation shuttle 6 of device peripheral hardware；
A power supply module 8 is additionally provided in device, for each electronics in device；
The work light 7 and one that a display POC power supply states are additionally provided with outside device is responsible for the LED numbers of display magnitude of power
Code pipe display module 5；
As shown in Fig. 2, include a LED digital-scroll technique tube drive circuit 5a in the LED charactrons display module 5,
Show that LED charactrons 5b, measured power show LED charactrons by the predetermined power of LED digital-scroll technique tube drive circuits 5a controls
5c。
The mentality of designing of the POC output power detection devices of the utility model is designed according to POC power supply the principle.
When the POC output powers for being monitored equipment detect, the course of work of the utility model is as follows：
1, predetermined test value：Before the POC output powers for detecting monitoring device, first regulation power is needed to adjust shuttle 6, preset
The operating power value of the household monitor camera of one analog detection, observable predetermined power show real-time on LED charactrons 5b
The performance number of display, to confirm the detection performance number size of adjusting；
2, detection device accesses：The POC of the monitoring device BNC mouths powered are connected to detection device by coaxial cable
On bnc interface 4, the POC functions of monitoring device then come into effect；
3, coaxial signal detaches：The coaxial signal of BNC inputs is superimposed for HD video source signal with DC signal mixed
Signal is closed, needs to isolate the DC signal that detection needs by coaxial signal split circuit 1；
As shown in figure 3, mixed signal is inputted into after coaxial signal split circuit 1, video source signals of the inductance L1 to high frequency
Relatively low induction reactance is showed with DC signal, and the filtering circuit for the low-frequency signal components being made of R1, C2, Q1, Q2, R2 can will mix
The interference signal isolation of low frequency in signal is closed, the circuit that C3, C4 are combined into can match the video source signal of high frequency, to direct current telecommunications
Number high induction reactance is shown, to isolate the video source signal of input, and the parallel circuit of L2, D1 are to then table in DC signal
Reveal 0 induction reactance, the DC signal of input can be properly separated out；
4, it is depressured：2 receive after the DC24V voltages exported in coaxial signal split circuit 1 in isolating transformer, will pass through
Electromagnetic induction is coupled to output end, is down to the 12V voltages for meeting the work of household monitor camera, and is input to Variable power load inspection
In slowdown monitoring circuit 3；
5, power detection：After having power input in Variable power load detecting circuit 3, work light 7 can then light, explanation
The POC power supplies of monitoring device are normal.As shown in figure 4, the R in Variable power load detecting circuit 3LResistance is that simulated domestic monitoring is taken the photograph
The equivalent resistance of camera, at this time RLOperating power can be equivalent to the driving power of household monitor camera, it is aobvious by LED numbers
Show tube drive circuit 5a, the operating power of load can be shown in measured power shows LED charactrons 5c, and can be with default work(
It is consistent that rate shows that LED charactrons 5b comparisons are confirmed whether, then the operating power for whether meeting household monitor camera can be confirmed；
6, measured power is adjusted：According to rating formula P=UI=U2/ R adjusts Variable power by power regulation shuttle 6
The resistance value of swept resistance R1 in load detecting circuit 3, then can change RLOperating power, supervised with simulating various households
The operating power for controlling video camera is tested without the household monitor camera of frequent switching access test.
Referring to Fig. 4, the Variable power load detecting circuit 3 includes diode, the control circuit work(of a conducting electric signal
The swept resistance R1 of rate size variation, swept resistance R1 are connected with operational amplifier, the output end of operational amplifier with it is equivalent
Resistance RLIt is connected, by equivalent resistance RLCalculate operating power；Optionally, resistance R2 and capacitance C2 forms bypass circuit, reduces letter
Number interference.
Referring to Fig. 5, the LED digital-scroll technique tube drive circuit 5a receive detection performance number by MCU microcontrollers,
And digital pipe driving chip is controlled, numerical value is shown；Measured power shows that LED charactrons 5c shows LED with predetermined power
Charactron 5b is common anode charactron, and public pole COM is connected to power supply anode, when the cathode of a certain field light emitting diode is low electricity
Usually, respective field is just lighted.When the cathode of a certain field is high level, respective field does not just work.
Only specific embodiment of the present utility model described above, various illustrations are not to the reality of the utility model
Matter Composition of contents limits, and person of an ordinary skill in the technical field can be to described in the past specific after having read specification
Embodiment is made an amendment or is deformed, without departing from the spirit and scope of utility model.
Claims (1)
1. a kind of POC output power detection devices of monitoring device, which is characterized in that including：It is sequentially connected coaxial in device
Demultiplexing circuit（1）, isolating transformer（2）, Variable power load detecting circuit（3）；
The coaxial signal split circuit（1）With the bnc interface of device peripheral hardware（4）It is connected；
The Variable power load detecting circuit（3）With the power regulation shuttle of device peripheral hardware（6）It is connected；
A power supply module is additionally provided in device（8）, for each electronics in device；
The work light of a display POC power supply states is additionally provided with outside device（7）The LED for being responsible for display magnitude of power with one is digital
Pipe display module（5）；
The LED charactrons display module（5）In include a LED digital-scroll technique tube drive circuits（5a）, and by LED numbers
Show tube drive circuit（5a）The predetermined power of control shows LED charactrons（5b）, measured power show LED charactrons（5c）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820295808.0U CN207908579U (en) | 2018-03-03 | 2018-03-03 | A kind of POC output power detection devices of monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820295808.0U CN207908579U (en) | 2018-03-03 | 2018-03-03 | A kind of POC output power detection devices of monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207908579U true CN207908579U (en) | 2018-09-25 |
Family
ID=63557736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820295808.0U Expired - Fee Related CN207908579U (en) | 2018-03-03 | 2018-03-03 | A kind of POC output power detection devices of monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207908579U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113259659A (en) * | 2021-05-26 | 2021-08-13 | 浙江大华技术股份有限公司 | Test method, test device, storage medium and electronic device |
-
2018
- 2018-03-03 CN CN201820295808.0U patent/CN207908579U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113259659A (en) * | 2021-05-26 | 2021-08-13 | 浙江大华技术股份有限公司 | Test method, test device, storage medium and electronic device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180925 Termination date: 20190303 |
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| CF01 | Termination of patent right due to non-payment of annual fee |