CN1535017A - Control method of rail traffic infrared video frequency transmission system - Google Patents
Control method of rail traffic infrared video frequency transmission system Download PDFInfo
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- CN1535017A CN1535017A CNA031160352A CN03116035A CN1535017A CN 1535017 A CN1535017 A CN 1535017A CN A031160352 A CNA031160352 A CN A031160352A CN 03116035 A CN03116035 A CN 03116035A CN 1535017 A CN1535017 A CN 1535017A
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Abstract
A control method for the infrared video transmission system of track traffic features that two locomotive detectors are respectively arranged at the different positions close to track. When a locomotive is running through the first detector, the detector sends a start signal to controller and the infrared video emitter transmits video signal to the display in driver cab. When the locamotive is running through the second detector, the detector sens a stop signal to control and the infrared video emitter is in wait state and no image is displayed on the screen in driver cab.
Description
Technical field
The present invention relates to a kind of control method of track traffic infrared video transmission system, be used for the transmitting video image real time information, belong to the infrared video transmission technique field.
Background technology
Because the driver need see the image of situation on the platform when the 100m of platform parking spot front and back, to guarantee passenger get on or off the bus safety and traffic safety, the Infrared video image transmission system is the video image with station, road junction, railway platform or other object sight, send to infrared video receiver on the car with infrared video reflector to eye-safe, receive and demodulation through photoelectricity, be presented on the display in the locomotive image that the driver need see in the time of can seeing platform parking spot front and back 100m in driver's cabin.
Free space optical communication is FSO because little, in light weight, safe, secret, anti-interference, the transmission rate advantages of higher of optical antenna volume, and along with the development of technology, the advantage that cost is low will appear day by day, have bright development prospect.
The FSO equipment that existing market has occurred all is point-to-point transmission signals, has only Siemens to release a kind ofly car is promptly put infrared video transmission system to the motor point.Its operation principle as shown in Figure 1 and Figure 2, it is that infrared switching transmitter is installed in the locomotive driving chamber, infrared switching transmitter and infrared its angle of visual field of switching receiving equipment and operating distance are all greater than infrared video transmission service area, and need two cover optical systems to cooperate, so the trouble of bringing is many: the technology more complicated, require also than higher, equipment is many and complicated on the locomotive, thereby price height, reliability are low.
Summary of the invention
The objective of the invention is to invent that a kind of system is simple, Installation and Debugging are convenient, reliable operation, the control method of the track traffic infrared video transmission system that price is low.
1. for realizing above purpose, technical scheme of the present invention provides a kind of control method of track traffic infrared video transmission system, it is characterized in that, its control method comprises:
(1) 1～4 camera is installed on platform, is monitored the position that platform need be supervised;
(2) picture signal of camera is sent to image synthesizer, modulator and the photo-electric conversion device of installing at communication machine room through cable;
(3) modulated signal sends installation infrared video reflector in orbit to;
(4) infrared video receiver, display are installed in the locomotive driving chamber;
(5) at two locomotive detectors of the other installation of platform track;
(6) when train passes through locomotive detector 1, detector 1 sends starting-up signal to controller, and the infrared video reflector begins to send vision signal to locomotive driving chamber display;
(7) when train passes through detector 2, detector 2 sends off signals to controller, and the infrared video reflector is ready, and locomotive driving chamber display is display image not, and the infrared video receiver also is ready.
2. use the required track traffic infrared video transmission system of this method to comprise:
(1) camera is 1～4;
(2) image synthesizer and modulator, photo-electric conversion device;
(3) infrared video reflector;
(4) infrared video receiver, display;
(5) locomotive detector.
Detector is contained in the track next door, and the distance of two detectors is the service area, and two detectors are installed in two of service area respectively, are generally about 200 meters.
The present invention forwards the infrared switching reflector in the train driving chamber on the ground to, by moving-target transmission information is become fixed target is transmitted signal, thus to beacon require lowly, can use detector instead.
Advantage of the present invention is
Since with infrared locomotive detector by forwarding on the train on the ground, can dwindle the volume of infrared video reflector and receiver, and will transfer to fixed target transmission information moving-target transmission information, transmitting range is reduced to several meters by 200 meters.
The present invention need not to install two the cover optical systems cooperate, system is simple;
3. because infrared switching reflector can be used detector instead, and detector can adopt the various magnetoelectric induction devices of using near switch, Photoelectric infrared switch, electromagnetic switch, electronic switch, Piezoelectric switches, railway, Installation and Debugging are simple like this, reliable operation, and price is low.
Description of drawings:
Fig. 1 is Siemens's infrared video transmission system theory diagram;
Fig. 2 is Siemens's infrared video transmission system schematic diagram;
Fig. 3 is an infrared video transmission system theory diagram of the present invention;
Fig. 4 is a locomotive detection operations schematic diagram;
Fig. 5 is the controller electrical schematic diagram;
Infrared video transmission system operation principle block diagram when Fig. 6 is straight line for track;
Infrared video transmission system operation principle block diagram when Fig. 7 is curve for track.
Embodiment:
The invention will be further described below in conjunction with accompanying drawing and two embodiment.
As Fig. 3, shown in 4, be infrared video transmission system theory diagram, camera is photographed the situation of platform, pass to image synthesizer and modulator, be transmitted into the infrared video receiver through light-to-current inversion, be presented on the display in the locomotive driving chamber, and infrared locomotive detector plays the effect of a switch, and two cover locomotive detectors are installed in the train rail both sides, is the service area in this interval, detector is long opening at ordinary times, when train when the locomotive detector 1, train is during near platform, detector 1 sends starting-up signal to controller, the infrared video reflector begins to send vision signal, and the display in the driver's cabin of locomotive promptly shows the situation of platform.When train passed through detector 2, behind the train in-track platform, detector 2 sent off signals to controller, and the infrared video reflector is ready, and the display in the driver's cabin of locomotive does not show the situation of platform.Detector can adopt various magnetoelectric induction devices of using near switch, Photoelectric infrared switch, electromagnetic switch, electronic switch, Piezoelectric switches, railway etc.
As shown in Figure 5, be the controller electrical schematic diagram, form by power supply, relay, when detector 1 detects locomotive and enters the service area, relay J 2 actions in the detector, normally opened contact closure, connect the power supply circuits of the relay J 1 in the controller, make the J1 action, then contact J1-2 connects the start of infrared video reflector, and contact J1-1 makes the J1 relay keep attracting state before off signal comes always.When train is leaving from station, when detector 2 detects train and leaves the service area, relay J 3 actions of detector 2, normally-closed contact disconnects, the current supply circuit that has cut off J1, J1 returns to normal.Contact J1-1, J1-2 all return to the normally open position, and this moment, the infrared video reflector returned to holding state.
If the infrared video reflector does not receive the starting-up signal that controller transmits, it is in the mode of operation of standby always.As long as train enters the working region, controller sends starting-up signal immediately and comes, and the infrared video reflector changes operating state over to, and vision signal is sent.When train left the working region, controller sent an off signal, infrared video reflector and having disconnected infrared just connection the between the infrared video receiver, and two equipment all enter armed state.Monitor will be in the blank screen state.
Embodiment 1:
The control method of the infrared video transmission system when track is straight line:
As shown in Figure 6, the infrared video transmission system fundamental diagram when being straight line for track is installed camera on platform; At communication machine room image synthesizer and modulator are installed; The infrared video receiver is installed in windshield back, locomotive driving chamber, and this equipment is installed towards the train movement direction.Display is contained in the left side of bridge, the infrared video reflector need be installed on the pillar or wall on track limit, platform two ends, setting height(from bottom) will keep the same with the infrared video receiver on the locomotive, about more than 2 meters, prevent to be blocked by the people, detector 1 is installed in leaving from station preceding 100 meters of parking spot, and detector 2 is installed in 100 meters behind leaving from station the parking spot.When train passed through locomotive detector 1, detector 1 sent starting-up signal to controller, and the infrared video reflector begins to send vision signal to locomotive driving chamber display; When train passed through detector 2, detector 2 sent off signals to controller, and the infrared video reflector is ready, and locomotive driving chamber display is display image not.If infrared video transmission working region does not have locomotive, then the infrared video reflector is ready.
Embodiment 2:
The control method of the infrared video transmission system when track is curve:
As shown in Figure 7, infrared video transmission system fundamental diagram when being curve for track, at N detector of the other installation of curve track, first detector is responsible for the start of first infrared video reflector, second detector then is responsible for the shutdown of first infrared transmitter and the start of second infrared transmitter, the rest may be inferred, and N platform detector is responsible for the shutdown of N platform infrared video reflector.Distance between the detector is decided on the radian size, and radian is curved more, and detector is adorned closely more.The locomotive detector makes the infrared video reflector be the relay operating state like this.Additive method is the same with embodiment 1.
Claims (5)
1. the control method of a track traffic infrared video transmission system is characterized in that, two locomotive detectors are installed in by the platform track, and its control method comprises:
(1) 1～4 camera is installed on platform, is monitored the position that platform need be supervised;
(2) picture signal of camera is sent to image synthesizer, modulator and the photo-electric conversion device of installing at communication machine room through cable;
(3) modulated signal sends installation infrared video reflector in orbit to;
(4) infrared video receiver, display are installed in the locomotive driving chamber;
(5) at two locomotive detectors of the other installation of platform track;
(6) when train passes through locomotive detector 1, detector 1 sends starting-up signal to controller, and the infrared video reflector begins to send vision signal to locomotive driving chamber display;
(7) when train passes through detector 2, detector 2 sends off signals to controller, and the infrared video reflector is ready, and locomotive driving chamber display is display image not, and the infrared video receiver also is ready.
2. use the required track traffic infrared video transmission system of this method to comprise:
(1) camera is 1～4;
(2) image synthesizer and modulator, photo-electric conversion device;
(3) infrared video reflector;
(4) infrared video receiver, display;
(5) locomotive detector.
3. according to the control method of claim 1,2 described track traffic infrared video transmission systems, it is characterized in that, described at two locomotive detectors of the other installation of platform track, the distance of two detectors is the service area, two detectors are installed in two of service area respectively, general about 200 meters.
4. according to claim 1,2 described track traffic infrared video transmission systems, it is characterized in that described detector can adopt the various magnetoelectric induction devices of using near switch, Photoelectric infrared switch, electromagnetic switch, electronic switch, Piezoelectric switches, railway.
5. track traffic infrared video transmission system according to claim 1 is characterized in that, is equipped with controller in the described infrared video reflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031160352A CN1535017A (en) | 2003-03-28 | 2003-03-28 | Control method of rail traffic infrared video frequency transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031160352A CN1535017A (en) | 2003-03-28 | 2003-03-28 | Control method of rail traffic infrared video frequency transmission system |
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| CN1535017A true CN1535017A (en) | 2004-10-06 |
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| CNA031160352A Pending CN1535017A (en) | 2003-03-28 | 2003-03-28 | Control method of rail traffic infrared video frequency transmission system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100461648C (en) * | 2005-11-24 | 2009-02-11 | 北京世纪东方国铁电讯科技有限公司 | System and method of despatching monitoring for railway emergency and dynamic video monitoring |
| CN102700572A (en) * | 2012-06-06 | 2012-10-03 | 西安电子科技大学 | Method for monitoring and early warning visualization relay in block section for railway safe traveling |
| CN104796893A (en) * | 2005-09-30 | 2015-07-22 | 通用电气公司 | System and method for providing access to wireless railroad data network |
| CN107953904A (en) * | 2017-11-21 | 2018-04-24 | 中车长江车辆有限公司 | A kind of vehicle parking control method and station level control system |
| CN110015320A (en) * | 2018-01-08 | 2019-07-16 | 比亚迪股份有限公司 | Monitoring image display methods, device and system based on rail traffic |
-
2003
- 2003-03-28 CN CNA031160352A patent/CN1535017A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796893A (en) * | 2005-09-30 | 2015-07-22 | 通用电气公司 | System and method for providing access to wireless railroad data network |
| CN100461648C (en) * | 2005-11-24 | 2009-02-11 | 北京世纪东方国铁电讯科技有限公司 | System and method of despatching monitoring for railway emergency and dynamic video monitoring |
| CN102700572A (en) * | 2012-06-06 | 2012-10-03 | 西安电子科技大学 | Method for monitoring and early warning visualization relay in block section for railway safe traveling |
| CN102700572B (en) * | 2012-06-06 | 2015-06-17 | 西安电子科技大学 | Method for monitoring and early warning visualization relay in block section for railway safe traveling |
| CN107953904A (en) * | 2017-11-21 | 2018-04-24 | 中车长江车辆有限公司 | A kind of vehicle parking control method and station level control system |
| CN110015320A (en) * | 2018-01-08 | 2019-07-16 | 比亚迪股份有限公司 | Monitoring image display methods, device and system based on rail traffic |
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