CN109345810A - Show piece safety monitoring system - Google Patents
Show piece safety monitoring system Download PDFInfo
- Publication number
- CN109345810A CN109345810A CN201811385575.4A CN201811385575A CN109345810A CN 109345810 A CN109345810 A CN 109345810A CN 201811385575 A CN201811385575 A CN 201811385575A CN 109345810 A CN109345810 A CN 109345810A
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- Prior art keywords
- module
- triode
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- resistance
- show piece
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Alarm Systems (AREA)
Abstract
The invention discloses a kind of show piece safety monitoring systems, including several distributed monitoring modules, the gateway that each floor in museum is arranged in, center management server and display module near show piece to be monitored is arranged in, distributed monitoring module is connect with gateway, gateway is connect by network with center management server, center management server is connect with display module, and distributed monitoring module includes human body sensor, microcontroller, alarm module, wireless communication module and power module；Power module includes voltage input end, voltage output end, the first potentiometer, second resistance, the second capacitor, the first triode, the second triode, photoelectrical coupler, third transistor, the 4th triode, 3rd resistor, the 4th resistance, the first zener diode and DC power supply.Circuit structure of the present invention is relatively simple, cost is relatively low, maintain easily, the safety and reliability of circuit is higher.
Description
Technical field
The present invention relates to Exhibition Service field, in particular to a kind of show piece safety monitoring system.
Background technique
The museum in some places in China occurred literary rich stolen or was damaged in recent years, or even rich in some robbery with violence
In the case in object shop, casualties is caused, for the safety problem in museum in addition to antitheft, there are also moisture-proof, fire prevention, shockproof etc. to ask
Topic.Existing some show piece safety monitoring systems are supervised by thermoinduction sensor to personnel in show piece radius of safety are entered
Control, when there is personnel to enter in show piece radius of safety, issuing alarm signal makes warning device alarm, and passes through central tube
Reason server, safety management display module send the real time monitoring image that the show piece corresponds to camera to staff.However,
The component that the power pack of traditional show piece safety monitoring system uses is more, and circuit structure is complicated, and hardware cost is higher, no
It maintains easily.In addition, since the power pack of traditional show piece safety monitoring system lacks corresponding circuit protection function, example
Such as: lacking prevents signal interference function, causes the safety and reliability of circuit poor.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, provide a kind of circuit structure compared with
For simple, cost is relatively low, maintains easily, the higher show piece safety monitoring system of the safety and reliability of circuit.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of show piece safety monitoring system, wraps
Include several distributed monitoring modules being arranged near show piece to be monitored, the gateway that each floor in museum is set, center
Management server and display module, the distributed monitoring module are connect with the gateway, the gateway by network with it is described
Center management server connection, the center management server are connect with the display module, the distributed monitoring module packet
Include human body sensor, microcontroller, alarm module, wireless communication module and power module, the human body sensor
Be mounted at the pre-determined distance on the outside of show piece to be monitored, the human body sensor, alarm module, wireless communication module and
Power module is connect with the microcontroller, and the wireless communication module is also connect with the gateway；
The power module includes voltage input end, voltage output end, the first potentiometer, second resistance, the second capacitor,
One triode, the second triode, photoelectrical coupler, third transistor, the 4th triode, 3rd resistor, the 4th resistance, first are surely
Press diode and DC power supply, the voltage output end respectively with one end of the second resistance, the second triode emitter,
In photoelectrical coupler a fixing end of the emitter of phototriode and the first potentiometer connect, the second resistance it is another
End is connect with the base stage of the emitter of first triode and the second triode respectively, the base stage of first triode and institute
State one end connection of the second capacitor, the other end of second capacitor collection with phototriode in the photoelectrical coupler respectively
Electrode, the first triode collector connected with voltage input end, the sliding end of first potentiometer and the three or three pole
The base stage of pipe connects, and the collector of the third transistor is connect with the cathode of light emitting diode in the photoelectrical coupler, institute
State the anode of light emitting diode in photoelectrical coupler respectively with the collector of the 4th triode, one end of the 4th resistance and straight
The connection of galvanic electricity source, the base stage of the 4th triode yin with the other end of the 4th resistance and the first zener diode respectively
The emitter of pole connection, the emitter of the third transistor and the 4th triode is connect with one end of the 3rd resistor,
The anode of another fixing end of first potentiometer, the other end of 3rd resistor and the first zener diode is grounded, institute
The capacitance for stating the second capacitor is 280pF.
In show piece safety monitoring system of the present invention, the power module further includes third capacitor, and described
One end of three capacitors is connect with the emitter of first triode, the other end of the third capacitor and second triode
Base stage connection, the capacitance of the third capacitor is 350pF.
In show piece safety monitoring system of the present invention, the power module further includes the 5th resistance, and described
One end of five resistance is connect with the collector of first triode, the other end and the voltage input end of the 5th resistance
Connection, the resistance value of the 5th resistance are 45k Ω.
In show piece safety monitoring system of the present invention, the power module further includes the second diode, described
The anode of second diode is connect with the collector of the 4th triode, the cathode and the direct current of second diode
Source connection, the model S-101L of second diode.
In show piece safety monitoring system of the present invention, first triode, the second triode, the three or three pole
Pipe and the 4th triode are NPN type triode.
In show piece safety monitoring system of the present invention, the wireless communication module is bluetooth module, WIFI mould
Block, gsm module, GPRS module, CDMA module, CDMA2000 module, WCDMA module, TD-SCDMA module, Zigbee module or
LoRa module.
Implement show piece safety monitoring system of the invention, has the advantages that due to being equipped with distributed monitoring mould
Block, gateway, center management server and display module, distributed monitoring module include human body sensor, microcontroller, report
Alert module, wireless communication module and power module；Power module includes voltage input end, voltage output end, the first potentiometer,
Two resistance, the second capacitor, the first triode, the second triode, photoelectrical coupler, third transistor, the 4th triode, third electricity
Resistance, the 4th resistance, the first zener diode and DC power supply, the power supply of the power module and traditional show piece safety monitoring system
Part is compared, and the component used is less, due to saving some components, can reduce hardware cost in this way, in addition, the
Two capacitors are used to prevent the interference between the first triode and the second triode, therefore circuit structure is relatively simple, cost is relatively low,
Maintain easily, the safety and reliability of circuit it is higher.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram in show piece safety monitoring system one embodiment of the present invention；
Fig. 2 is the circuit diagram of power module in the embodiment.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In show piece safety monitoring system embodiment of the present invention, the structural schematic diagram of the show piece safety monitoring system is such as
Shown in Fig. 1.In Fig. 1, which includes several distribution prisons being arranged near show piece to be monitored
Control module 1 (only depicting one in figure as an example, can have in practical application multiple), the net that each floor in museum is set
It closes 2, center management server 3 and display module 4, distributed monitoring module 1 is connect with gateway 2, gateway 2 passes through network and center
Management server 3 connects, and center management server 3 is connect with display module 4, and each distributed monitoring module 1 is for monitoring exhibition
Product status information, center management server 3 is for collecting, storing show piece status information；Display module 4 is for showing show piece
Status information.
Distributed monitoring module 1 includes human body sensor 11, microcontroller 12, alarm module 13, radio communication mold
Block 14 and power module 15, human body sensor 11 are mounted at the pre-determined distance on the outside of show piece to be monitored, human body sensing
Sensor 11, alarm module 13, wireless communication module 14 and power module 15 are connect with microcontroller 12, wireless communication module
14 also connect with gateway 2.
Human body sensor 11 is mounted on the outside of show piece to be monitored at pre-determined distance, and human body sensor 11 is used for
Induction enters the personnel in show piece radius of safety to be monitored, and module 14 and gateway 2 carry out microcontroller 12 by wireless communication
Communication.Alarm module 13 uses combined aural and visual alarm.Human body sensor 11 is used to incude the infrared signal of human-body emitting, human body
Inductive pick-up 11 is equipped with camera, for acquiring the video information near show piece.
By 11 pairs of human body sensor enter show piece radiuss of safety in personnel be monitored, when have personnel into
When entering in show piece radius of safety, issuing alarm signal makes alarm module 13 alarm, and passes through center management server 3 and display
Module 4 sends the real time monitoring image of the show piece to staff.
In the present embodiment, wireless communication module 14 is bluetooth module, WIFI module, gsm module, GPRS module, CDMA mould
Block, CDMA2000 module, WCDMA module, TD-SCDMA module, Zigbee module or LoRa module.It is a variety of wireless by being arranged
Communication mode can not only increase the flexibility of communication, moreover it is possible to meet the needs of different user and different occasions.Especially
When it is using LoRa module, farther out, and communication performance is relatively stable, is suitable for higher to QoS requirement for communication distance
Occasion.
Fig. 2 is the circuit diagram of power module in the present embodiment, and in Fig. 2, which includes voltage input end
Vin, voltage output end Vo, the first potentiometer RP1, second resistance R2, the second capacitor C2, the first triode Q1, the second triode
Q2, photoelectrical coupler OC, third transistor Q3, the 4th triode Q4,3rd resistor R3, the 4th resistance R4, two pole of the first pressure stabilizing
Pipe D1 and DC power supply VCC, wherein the voltage output end Vo transmitting with one end of second resistance R2, the second triode Q2 respectively
A fixing end of the emitter of phototriode and the first potentiometer RP1 connect in pole, photoelectrical coupler OC, second resistance R2
The other end connect respectively with the base stage of the emitter of the first triode Q1 and the second triode Q2, the base stage of the first triode Q1
It is connect with one end of the second capacitor C2, the other end of the second capacitor C2 current collection with phototriode in photoelectrical coupler OC respectively
Pole, the first triode Q1 collector connected with voltage input end Vin, the sliding end and third transistor of the first potentiometer RP1
The base stage of Q3 connects, and the collector of third transistor Q3 is connect with the cathode of light emitting diode in photoelectrical coupler OC, photoelectricity coupling
In clutch OC the anode of light emitting diode respectively with the collector of the 4th triode Q4, one end of the 4th resistance R4 and DC power supply
VCC connection, the base stage of the 4th triode Q4 connect with the cathode of the other end of the 4th resistance R4 and the first zener diode D1 respectively
It connects, the emitter of the emitter of third transistor Q3 and the 4th triode Q4 are connect with one end of 3rd resistor R3, the first electricity
Another fixing end, the other end of 3rd resistor R3 and the anode of the first zener diode D1 of position device RP1 is grounded.
The power module 15 compared with the power pack of traditional show piece safety monitoring system, the component that uses compared with
Few, circuit structure is relatively simple, maintains easily, and due to saving some components, can reduce hardware cost in this way.In addition,
Second capacitor C2 is coupled capacitor, for preventing the interference between the first triode Q1 and the second triode Q2, therefore circuit
Safety and reliability is higher.It is noted that the capacitance of the second capacitor C2 is 280pF in the present embodiment, certainly,
In practical application, the capacitance of the second capacitor C2 can adjust accordingly as the case may be, that is, the second capacitor C2
Capacitance can be increased accordingly or be reduced as the case may be.
When the output voltage of voltage output end Vo is increased because of certain reason, the bias of third transistor Q3 just be will increase,
The anode current of light emitting diode in photoelectrical coupler OC increases, and the voltage of the phototriode in photoelectrical coupler OC subtracts
It is small, the reference voltage decline of the first triode Q1, so that original raised output voltage be made to reduce.
In the present embodiment, the first triode Q1, the second triode Q2, third transistor Q3 and the 4th triode Q4 are
NPN type triode.Certainly, in practical applications, the first triode Q1, the second triode Q2, third transistor Q3 and the four or three
Pole pipe Q4 can also be PNP type triode, but at this moment the structure of circuit also will accordingly change.
In the present embodiment, which further includes third capacitor C3, one end of third capacitor C3 and the first triode
The emitter of Q1 connects, and the other end of third capacitor C3 is connect with the base stage of the second triode Q2.Third capacitor C3 is coupling electricity
Hold, for preventing the interference between the first triode Q1 and the second triode Q2, with further enhance circuit safety and can
By property.It is noted that the capacitance of third capacitor C3 is 350pF in the present embodiment, certainly, in practical applications, third
The capacitance of capacitor C3 can adjust accordingly as the case may be, that is, the capacitance of third capacitor C3 can be according to feelings
Condition is increased accordingly or is reduced.
In the present embodiment, which further includes the 5th resistance R5, one end of the 5th resistance R5 and the first triode
The collector of Q1 connects, and the other end of the 5th resistance R5 is connect with voltage input end Vin.5th resistance R5 is current-limiting resistance, is used
Current-limiting protection is carried out in the collector current to the first triode Q1, further to enhance the safety and reliability of circuit.
It is noted that the resistance value of the 5th resistance R5 is 45k Ω in the present embodiment, certainly, in practical applications, the 5th resistance R5
Resistance value can adjust accordingly as the case may be, that is, the resistance value of the 5th resistance R5 can carry out as the case may be
It increases accordingly or reduces.
In the present embodiment, which further includes the second diode D2, the anode and the four or three of the second diode D2
The collector of pole pipe Q4 connects, and the cathode of the second diode D2 is connect with DC power supply VCC.Second diode D2 is two pole of current limliting
Pipe, for carrying out current-limiting protection.It is noted that in the present embodiment, the model S-101L of the second diode D2, certainly,
In practical applications, the second diode D2 can also have the diode of similar functions using other models.
In short, in the present embodiment, the power module 15 compared with the power pack of traditional show piece safety monitoring system,
The component used is less, and circuit structure is relatively simple, maintains easily, and due to saving some components, can reduce in this way
Hardware cost.In addition, being equipped with coupled capacitor in the power module 15, therefore the safety and reliability of circuit is higher.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of show piece safety monitoring system, which is characterized in that including several points near show piece to be monitored are arranged in
Cloth monitoring module, the gateway that each floor in museum is set, center management server and display module, the distributed monitoring
Module is connect with the gateway, and the gateway is connect by network with the center management server, the centre management service
Device is connect with the display module, the distributed monitoring module include human body sensor, microcontroller, alarm module,
Wireless communication module and power module, the human body sensor are mounted at the pre-determined distance on the outside of show piece to be monitored,
The human body sensor, alarm module, wireless communication module and power module are connect with the microcontroller, the nothing
Line communication module is also connect with the gateway；
The power module includes voltage input end, voltage output end, the first potentiometer, second resistance, the second capacitor, the one or three
Pole pipe, the second triode, photoelectrical coupler, third transistor, the 4th triode, 3rd resistor, the 4th resistance, the first pressure stabilizing two
Pole pipe and DC power supply, the voltage output end respectively with one end of the second resistance, the emitter of the second triode, photoelectricity
A fixing end of the emitter of phototriode and the first potentiometer connects in coupler, the other end point of the second resistance
It is not connect with the base stage of the emitter of first triode and the second triode, the base stage of first triode and described the
One end of two capacitors connects, the other end of second capacitor current collection with phototriode in the photoelectrical coupler respectively
Pole, the first triode collector connected with voltage input end, the sliding end of first potentiometer and the third transistor
Base stage connection, the collector of the third transistor is connect with the cathode of light emitting diode in the photoelectrical coupler, described
In photoelectrical coupler the anode of light emitting diode respectively with the collector of the 4th triode, one end of the 4th resistance and direct current
Power supply connection, the base stage of the 4th triode cathode with the other end of the 4th resistance and the first zener diode respectively
The emitter of connection, the emitter of the third transistor and the 4th triode is connect with one end of the 3rd resistor, institute
The anode for stating another fixing end of the first potentiometer, the other end of 3rd resistor and the first zener diode is grounded, described
The capacitance of second capacitor is 280pF.
2. show piece safety monitoring system according to claim 1, which is characterized in that the power module further includes third
Capacitor, one end of the third capacitor are connect with the emitter of first triode, the other end of the third capacitor and institute
The base stage connection of the second triode is stated, the capacitance of the third capacitor is 350pF.
3. show piece safety monitoring system according to claim 2, which is characterized in that the power module further includes the 5th
One end of resistance, the 5th resistance is connect with the collector of first triode, the other end of the 5th resistance and institute
Voltage input end connection is stated, the resistance value of the 5th resistance is 45k Ω.
4. show piece safety monitoring system according to claim 3, which is characterized in that the power module further includes second
Diode, the anode of second diode are connect with the collector of the 4th triode, the cathode of second diode
It is connect with the DC power supply, the model S-101L of second diode.
5. show piece safety monitoring system according to any one of claims 1 to 4, which is characterized in that the described 1st
Pole pipe, the second triode, third transistor and the 4th triode are NPN type triode.
6. show piece safety monitoring system according to any one of claims 1 to 4, which is characterized in that the channel radio
Letter module be bluetooth module, WIFI module, gsm module, GPRS module, CDMA module, CDMA2000 module, WCDMA module,
TD-SCDMA module, Zigbee module or LoRa module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811385575.4A CN109345810A (en) | 2018-11-20 | 2018-11-20 | Show piece safety monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811385575.4A CN109345810A (en) | 2018-11-20 | 2018-11-20 | Show piece safety monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109345810A true CN109345810A (en) | 2019-02-15 |
Family
ID=65316712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811385575.4A Pending CN109345810A (en) | 2018-11-20 | 2018-11-20 | Show piece safety monitoring system |
Country Status (1)
| Country | Link |
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| CN (1) | CN109345810A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101594053A (en) * | 2009-03-27 | 2009-12-02 | 广州金升阳科技有限公司 | A kind of power supply changeover device of wide-range voltage input |
| CN101873069A (en) * | 2009-04-27 | 2010-10-27 | 武汉市创佳源电子有限公司 | Stability of large closed-loop feedback system of high-efficiency linear power supply |
| CN204497981U (en) * | 2014-12-03 | 2015-07-22 | 成都英力拓信息技术有限公司 | Based on the direct current regulation circuit of optocoupler |
| CN106327766A (en) * | 2016-08-28 | 2017-01-11 | 桂林力拓信息科技有限公司 | Exhibit security monitoring system |
| CN107547109A (en) * | 2017-08-04 | 2018-01-05 | 广东美的制冷设备有限公司 | Air conditioner current loop communication circuit and air conditioner |
| CN208063227U (en) * | 2018-04-18 | 2018-11-06 | 南京渔管家物联网科技有限公司 | Support the agriculture big data gateway of multi-protocols |
-
2018
- 2018-11-20 CN CN201811385575.4A patent/CN109345810A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101594053A (en) * | 2009-03-27 | 2009-12-02 | 广州金升阳科技有限公司 | A kind of power supply changeover device of wide-range voltage input |
| CN101873069A (en) * | 2009-04-27 | 2010-10-27 | 武汉市创佳源电子有限公司 | Stability of large closed-loop feedback system of high-efficiency linear power supply |
| CN204497981U (en) * | 2014-12-03 | 2015-07-22 | 成都英力拓信息技术有限公司 | Based on the direct current regulation circuit of optocoupler |
| CN106327766A (en) * | 2016-08-28 | 2017-01-11 | 桂林力拓信息科技有限公司 | Exhibit security monitoring system |
| CN107547109A (en) * | 2017-08-04 | 2018-01-05 | 广东美的制冷设备有限公司 | Air conditioner current loop communication circuit and air conditioner |
| CN208063227U (en) * | 2018-04-18 | 2018-11-06 | 南京渔管家物联网科技有限公司 | Support the agriculture big data gateway of multi-protocols |
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Application publication date: 20190215 |
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