CN202009446U - Intelligent controller for camera - Google Patents
Intelligent controller for camera Download PDFInfo
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- CN202009446U CN202009446U CN2010206848717U CN201020684871U CN202009446U CN 202009446 U CN202009446 U CN 202009446U CN 2010206848717 U CN2010206848717 U CN 2010206848717U CN 201020684871 U CN201020684871 U CN 201020684871U CN 202009446 U CN202009446 U CN 202009446U
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Abstract
The utility model relates to an intelligent controller for a camera, comprising a central processor, an isolating source circuit, a photoelectric isolation module, a communication module, a digital logic processing module, a reset circuit and a power supply module, wherein the central processor is connected to the data output end of the camera through the photoelectric isolation module and the communication module, the control end of the central processor is connected to the reset circuit through the digital logic processing module, the output end of the reset circuit is connected to the power supply end of the camera; the power output end of the power supply module is connected to the working power end of the central processor, and the power output end of the power supply module is connected to the working power ends of the communication module and the photoelectric isolation module through the insolating source circuit. According to the utility model, the digital logic processing module is adopted to control the reset circuit to be not in operation state when the central processor is in fleet state, thus avoiding misoperation of the camera and impact on the inner circuit of the intelligent controller of the camera by an external circuit.
Description
Technical field
The utility model relates to the control device of the video camera in the traffic surveillance and control system, specifically a kind of video camera intelligent controller.
Background technology
Along with the development of society and the progress of science and technology, urban transportation is gradually improved, and the traffic jam issue of Dao Laiing is serious day by day thereupon, and the subject matter of traffic congestion is that indivedual drivers drive a vehicle, cause congestion in road not according to traffic rules in the city, particularly in rush-hour, jam is more obvious.The preferred approach of administering this problem is to monitor to reduce driver's act of violating regulations by traffic surveillance and control system is installed.For traffic surveillance and control system, its major function is to monitor by video camera to catch the traffic offence vehicle, this just require video camera must guarantee 24 hours can both operate as normal, therefore need a kind of video camera intelligent controller, can monitor video camera constantly, guarantee that video camera is in running order.When illegal operation appearred in video camera, this controller can reset to video camera in the very first time.Thereby guarantee the video camera long-time steady operation.Yet, the present relevant report that this type of video camera intelligent controller is not arranged as yet.
The utility model content
At the video camera in the traffic surveillance and control system be prone to illegal operation and cause can't operate as normal weak point, the technical problems to be solved in the utility model provides a kind of simple in structure, stable performance, practical camera control unit, can guarantee the reliable long-play of camera stabilization.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of video camera intelligent controller of the utility model is characterized in that: comprise central processing unit, insulating power supply circuit, photoelectric isolation module, communication module, Digital Logic processing module, reset circuit and power module; Wherein, central processing unit is connected to the data output end of camera by photoelectric isolation module through communication module, and the control end of central processing unit links to each other with reset circuit by the Digital Logic processing module, and the output of reset circuit is connected to the power end of video camera; The power output end of power module links to each other with the working power end of central processing unit, and the power output end of power module links to each other with the working power end of communication module and photoelectric isolation module by the insulating power supply circuit.
Described Digital Logic processing module has artificial circuit part and digital circuit part, digital circuit partly comprises the 1st, 2 NAND gate, wherein two of the 1st NAND gate inputs are connected to the control signal that central processing unit is exported, output is connected to an input of the 2nd NAND gate, and another input of the 2nd NAND gate is connected to the control signal of central processing unit output; Artificial circuit part comprises the 2nd triode and photoelectric isolating device, and wherein, the base stage of the 2nd triode connects the output from the 2nd NAND gate, and emitter is connected to power end, and collector electrode is connected to the base stage of the 3rd triode in the reset circuit through photoelectric isolating device.
Described reset circuit comprises relay and the 3rd triode, the emitter of the 3rd triode links to each other with the insulating power supply circuit, collector electrode is connected to the camera power supply interface through relay, and the photoelectric isolating device of base stage in the Digital Logic processing module links to each other with the collector electrode of the 2nd triode.
The base stage of output termination the 1st triode of described communication module, the collector electrode of the 1st triode links to each other with photoelectric coupled device, and the output of photoelectric coupled device links to each other with the serial ports input of central processing unit.
The utlity model has following advantage:
1. guarantee that the video camera working stability is reliable, the utility model adopts the Digital Logic processing module to be at central processing unit and runs when flying state, and the control reset circuit is in off position, avoids camera misoperations.
2. effective and safe guarantee, the insulating power supply circuit that the utility model adopts can make extraneous effectively and the utility model video camera intelligent controller is realized electrical isolation, avoid external circuit to impact the utility model video camera intelligent controller internal circuit.
3. simple in structure, the operational module that the utility model adopts mostly is common on the market chip, assembles simple and convenient.
Description of drawings
Fig. 1 is the utility model circuit structure block diagram;
Fig. 2 is power module circuitry figure in the utility model;
Fig. 3 is a DC-DC insulating power supply circuit diagram in the utility model;
Fig. 4 is processor circuit figure in the utility model;
Fig. 5 is communication module and a photoelectric isolation module circuit diagram in the utility model;
Fig. 6 is the circuit diagram of Digital Logic processing module in the utility model;
Fig. 7 is reset circuit figure in the utility model;
Fig. 8 A is the main program flow chart that the utility model adopts;
Fig. 8 B is that the timer that the utility model adopts interrupts flow chart;
Fig. 8 C is the Data Receiving flow chart flow chart that the utility model adopts.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described in detail.
As shown in Figure 1, a kind of video camera intelligent controller of the utility model comprises central processing unit U4, insulating power supply circuit U 5, photoelectric isolation module, communication module, Digital Logic processing module U7, reset circuit K1 and power module, wherein, central processing unit U4 is connected to the data output end of camera through communication module U1 by photoelectric isolation module, the control end of central processing unit links to each other with reset circuit K1 by Digital Logic processing module U7, and the output of reset circuit K1 is connected to the power end of video camera; The power output end of power module links to each other with the working power end of central processing unit U4, and the power output end of power module links to each other with the working power end of communication module U1 and photoelectric isolation module by insulating power supply circuit U 5.
1st, 2 photoelectric isolation module U2, U3 adopt the TLP521-4 chip, U1 links to each other with communication module, output links to each other with reset circuit K1 by the Digital Logic processing module, the Digital Logic processing module can make reset circuit be in to run at central processing unit U4 and flies under the state to carry out misoperation to avoid video camera not in working order; The output of power module reaches with central processing unit U4 and links to each other with communication module U1 by insulating power supply circuit U 5, and power module can make extraneous and a kind of realization electrical isolation of the utility model, avoids external circuit to impact the internal circuit of video camera intelligent controller.
As shown in Figure 4, in the present embodiment, central processing unit U4 adopts the atmega8 of AVR company, have characteristics low in energy consumption, fast operation, comprise two line interfaces of the In-System Programmable Flash byte-oriented of 8K byte, two programmable serial USART, can work in the SPI serial line interface of main frame/slave mode, have the programmable watchdog timer and the interior analog comparator of sheet of individual sheets internal oscillator.
1 pin of central processing unit U4 (input/output terminal that links to each other with photoelectric isolation module) links to each other with 4 pin of the 1st photoelectric isolation module U2,3,5 pin of central processing unit U4 (power supply ground end) link to each other with 3 pin with 2 pin of power module respectively with 4,6 pin, 3,4 pin of central processing unit U4 link to each other with 2 pin with 1 pin of capacitor C 2 respectively simultaneously, 7,8 pin of central processing unit U4 link to each other with 1～2 pin of crystal oscillator Y1 respectively, 7～8 pin of central processing unit U4 link to each other with 1 pin of capacitor C 3, C4 respectively simultaneously, and 2 pin of capacitor C 3, C4 link to each other with GND.15～17 pin of central processing unit U4,29 pin link to each other with 1～4 pin of binding post J6 respectively, and 5～6 pin of binding post J6 link to each other with VCCX with power supply GND.25～26 pin of central processing unit U4 link to each other with 5 pin of 1 pin, 2 pin and the U7B of Digital Logic processing module U7A respectively, and 30～31 pin of central processing unit U4 link to each other with 2 pin of the U2 of 4 pin of photoelectric isolation module U3, communication module 485 respectively.
As shown in Figure 2, power module adopts according to 7805 of TO-220 standard packaging, the negative feedback of the integrated degree of depth Voltage Series of this chip internal, outside being used with filter capacitor can be stablized output 5V voltage, the output current maximum can reach 500MA, electrochemical capacitor at its an output 470uf in parallel can be used for power filter, reduces the noise of system power supply.
The external DC12V power supply of power module, the DC5V power supply that output is isolated, the maximum current that can provide is 200mA, power supply is provided for the communication chip max485 of 485 communication parts, avoids external circuit to impact internal circuit so that the external world and this system realize electrical isolation.1 pin of power module (being the DC12V power input) links to each other with 1 pin of binding post J2; With 2 pin of the electrochemical capacitor C6 of power module parallel connection, link to each other with 2 pin of binding post J2 respectively with 2 pin of the filter capacitor C5 of power module parallel connection, 2 pin (power supply ground end) of power module, 3 pin of power module (being the DC5V power output end) link to each other with 1 pin of filter capacitor C5, electrochemical capacitor C6.
As shown in Figure 3, insulating power supply circuit U 5 adopts 12S05, change the insulating power supply circuit U 5 of DC5V for DC12V, the maximum current that this chip can provide is 200mA, power supply is provided for the communication module (adopting the max485 chip) of 485 communication parts, so that the external world avoids external circuit to impact internal circuit with this system's realization electrical isolation.1 pin of insulating power supply circuit U 5 (for the input of DC12V power supply) links to each other with 2 pin with 1 pin of binding post J2 respectively with 2 pin (power supply ground end), (for the DC5V power supply output after isolating) links to each other with 5 pin of communication module U1 and 8 pin of the 1st photoelectric isolation module U2 respectively 3 pin of insulating power supply circuit U 5 (insulating power supply ground end) with 4 pin, is used for providing insulating power supply to communication module U1.
As shown in Figure 5, communication module U1 adopts the max485 according to the SOP-8 standard packaging, and it has long transmission distance, characteristics such as data stabilization; 6～7 pin (A of 485 communication modules of communication module U1, the B communication pattern), 3 pin of insulating power supply circuit U 5 link to each other with 1～3 pin of binding post J1 respectively, 2～3 pin of communication module U1 link to each other with 6 pin of the 1st photoelectric isolation module U2,1 pin of communication module U1 connects 1 pin (R5 is 5100 Ω) of resistance R 5,2 pin of R5 link to each other with the base stage of the 1st triode Q1,4 pin of communication module U1 link to each other with 8 pin of the 1st photoelectric isolation module U2, the emitter and collector of the 1st triode Q1 respectively with VCC1,1 pin of R12 links to each other, 2 pin of resistance R 12 link to each other with 1 pin of the U3 of the 2nd photoelectric isolation module, 4 pin of the 2nd photoelectric isolation module U3 link to each other with VCC by R6,8 pin of the 1st photoelectric isolation module U2 link to each other with VCC1 by resistance R 3 (R3 is 5100 Ω), and 6 pin of the 1st photoelectric isolation module U2 link to each other with VCC1 by resistance R 2 (R2 is 5100 Ω).
Communication module and photoelectric isolation module comprise 485 bus communication chip and optocoupler isolator spares, the data output end of camera is through two input A of Serial Port Line and 485 communication chips, B links to each other, 485 buses are bus interface common in the Industry Control, adopt the combination of balance driver and differential receiver, anti-common mode disturbances ability strengthens, noise immunity is good, and long transmission distance, can reach 3000 meters, the base stage of output termination the 1st triode Q1 of 485 communication chips, conducting by controlling the 1st triode Q1 and end the conducting of controlling photoelectric coupled device U3 and end, the transistor collector termination VCC 5V voltage of photoelectric coupled device U3 inside, emitter connects the serial ports input of central processing unit, finish communication, by photoelectric coupled device 485 level and Transistor-Transistor Logic level kept apart like this, avoid since the fault effects of 485 buses to the work of central processing unit.
As shown in Figure 6, the Digital Logic processing module has artificial circuit part and digital circuit part, digital circuit partly comprises the 1st, 2 NAND gate U7A, U7B, wherein two of the 1st NAND gate U7A inputs are connected to the control signal that central processing unit U4 exports, output is connected to the input of the 2nd NAND gate U7B, another input of the 2nd NAND gate U7B is connected to the control signal of central processing unit U4 output, artificial circuit part comprises the 2nd triode Q2 and photoelectric isolating device U6, wherein, the base stage of the 2nd triode Q2 connects the output from the 2nd NAND gate U7B, emitter is connected to power end, and collector electrode is connected to the base stage of the 3rd triode Q3 in the reset circuit through photoelectric isolating device U6.
In the present embodiment, Digital Logic processing module U7 adopts the 74HC00 chip; 3 pin of the 1st NAND gate U7A of Digital Logic processing module link to each other with 4 pin of the 2nd NAND gate U7B, 6 pin of the 2nd NAND gate U7B link to each other with the base stage of the 2nd triode Q2 by R17 (R17 is 5100 Ω), the emitter of the 2nd triode Q2 links to each other with VCC, collector electrode links to each other with 1 pin of voltage module U6 by resistance R 27 (R27 is 330 Ω), 4 pin of voltage module U6 link to each other with DC12V by resistance R 22, and 3 pin of U6 link to each other with GND.
As shown in Figure 7, reset circuit K1 is made up of relay and triode; 1 pin of reset circuit K1 links to each other with DC12V, 2 pin of reset circuit K1 link to each other with 8550 3 pin, and 8550 1 pin links to each other with DC12V, and 3～4 pin of K1 link to each other with 1 pin of J3,2 pin of J3 link to each other with GND, and 2 pin of K1 and diode D6 of 5 pin reverse parallel connections are used to hold stream.A luminous tube D3 (model is 0805) simultaneously in parallel and current-limiting resistance R13 (R13 is 1200 Ω) between 2 and 5 pin of K1.
The photoelectricity isolation mode is all used in the input and output of central processing unit, and the purpose of doing like this is: (1) increases the reliability of controller work; (2) when camera hardware unusual (as power supply short circuit, overtension), can not damage controller, when controller hardware is unusual, also can not damage camera, specific as follows:
A) the DC-DC power isolator among Fig. 3 is with the analog circuit of controller hardware and the isolated from power of digital circuit, increases the reliability of controller.
B) U2 among Fig. 5, U3 are photoelectric isolating device, and the data output end of camera and the data input pin of controller are kept apart, and make it a certain and bring out existing fault and can not damage other end equipment.
C) U6 among Fig. 6 is a photoelectric isolating device, the digital circuit and the analog circuit of controller are kept apart, in order to increase the reliability of artificial circuit part, the power supply of artificial circuit part has adopted the 12V power supply, and the power supply that digital circuit partly adopts is 5V, after the isolation, the fault that causes because of unbalanced power supply can not appear in controller, has improved the reliability of system.
The utility model is realized its function by following steps:
Shown in Fig. 8 A～8C, under the situation of camera in operate as normal, can arrive the phase machine controller each second at the correct protocol data of its data output end output, when controller receives correct data, can be with the reset counter zero clearing, make it to reach 120 seconds, controller just can not make camera reset.If within 120 seconds, controller all is wrong from the data that the data output end of camera receives, and does not perhaps receive the data that camera spreads out of in 120 seconds, and then controller is thought the camera operation irregularity, and the action reset circuit restarts camera.
Claims (4)
1. a video camera intelligent controller is characterized in that: comprise central processing unit (U4), insulating power supply circuit (U5), photoelectric isolation module, communication module, Digital Logic processing module (U7), reset circuit (K1) and power module; Wherein, central processing unit (U4) is connected to the data output end of camera through communication module (U1) by photoelectric isolation module, the control end of central processing unit links to each other with reset circuit (K1) by Digital Logic processing module (U7), and the output of reset circuit (K1) is connected to the power end of video camera; The power output end of power module links to each other with the working power end of central processing unit (U4), and the power output end of power module links to each other with the working power end of communication module (U1) and photoelectric isolation module by insulating power supply circuit (U5).
2. according to the described video camera intelligent controller of claim 1, it is characterized in that: described Digital Logic processing module has artificial circuit part and digital circuit part, digital circuit partly comprises the 1st, 2 NAND gate (U7A, U7B), wherein two inputs of the 1st NAND gate (U7A) are connected to the control signal of central processing unit (U4) output, output is connected to an input of the 2nd NAND gate (U7B), and another input of the 2nd NAND gate (U7B) is connected to the control signal of central processing unit (U4) output; Artificial circuit part comprises the 2nd triode (Q2) and photoelectric isolating device (U6), wherein, the base stage of the 2nd triode (Q2) connects the output from the 2nd NAND gate (U7B), emitter is connected to power end, and collector electrode is connected to the base stage of the 3rd triode (Q3) in the reset circuit through photoelectric isolating device (U6).
3. according to the described video camera intelligent controller of claim 1, it is characterized in that: described reset circuit comprises relay (K1) and the 3rd triode (Q3), the emitter of the 3rd triode (Q3) links to each other with the insulating power supply circuit, collector electrode is connected to camera power supply interface (J3) through relay (K1), and the photoelectric isolating device (U6) of base stage in the Digital Logic processing module links to each other with the collector electrode of the 2nd triode (Q2).
4. according to the described video camera intelligent controller of claim 1, it is characterized in that: the base stage of output termination the 1st triode (Q1) of described communication module (U1), the collector electrode of the 1st triode (Q1) links to each other with photoelectric coupled device (U3), and the output of photoelectric coupled device (U3) links to each other with the serial ports input of central processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206848717U CN202009446U (en) | 2010-12-28 | 2010-12-28 | Intelligent controller for camera |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206848717U CN202009446U (en) | 2010-12-28 | 2010-12-28 | Intelligent controller for camera |
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| CN202009446U true CN202009446U (en) | 2011-10-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257435A (en) * | 2017-07-10 | 2017-10-17 | 昆明理工大学 | A kind of astronomical IMAQ and apparatus monitor system and its control method |
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2010
- 2010-12-28 CN CN2010206848717U patent/CN202009446U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257435A (en) * | 2017-07-10 | 2017-10-17 | 昆明理工大学 | A kind of astronomical IMAQ and apparatus monitor system and its control method |
| CN107257435B (en) * | 2017-07-10 | 2021-05-14 | 昆明理工大学 | Astronomical image acquisition and equipment monitoring system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111012 Termination date: 20141228 |
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| EXPY | Termination of patent right or utility model |