CN202703635U - Train anti-collision system based on acoustic warning - Google Patents
Train anti-collision system based on acoustic warning Download PDFInfo
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- CN202703635U CN202703635U CN 201220376870 CN201220376870U CN202703635U CN 202703635 U CN202703635 U CN 202703635U CN 201220376870 CN201220376870 CN 201220376870 CN 201220376870 U CN201220376870 U CN 201220376870U CN 202703635 U CN202703635 U CN 202703635U
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Abstract
The utility model discloses a train anti-collision system based on acoustic warning, which relates to the technical field of rail transit, and solves the technical problem of improving the safety of a train in a tunnel. The train anti-collision system comprises a plurality of acoustic warning units which are respectively mounted on each train, wherein each acoustic warning unit comprises an acoustic receiving device mounted on the train head, an acoustic emitting device mounted on the train tail, and signal control processing equipment; a front train emits an acoustic warning signal composed of acoustic waves in at least one frequency or frequency band to a rear train; and the rear train receives the acoustic warning signal emitted by the front train, and estimates the distance between this train and the front train according to the attenuation and chromatic dispersion characteristics of the acoustic warning signal, and performs timely warning. The train anti-collision system based on acoustic warning provided by the utility model is especially suitable for application in urban subway lines.
Description
Technical field
The utility model relates to the track traffic technology, particularly relates to a kind of technology of train collision avoidance system of warning based on sound wave.
Background technology
The safe in operation of track train is concerning passenger's the security of the lives and property, also is the prerequisite of circuit high efficiency operation simultaneously.At present, comprise that the main train operation control of track train that the city rail hands over (Train Control System, TCS, or for the ATC system of subway line, i.e. Automatic Train Control system) guarantees the safe in operation of train.Yet, the serious track train collision case that occurs successively in recent years shows, when make great efforts improving train operation control and management technology, develop a kind of independently, the vehicle-mounted collision avoidance system of actv. and method for the safety that improves train operation be necessity with useful.
At present, countries in the world all in the research of actively developing the train anti-collision technique that this class can work alone, comprise satellite positioning, image recognition, radiocommunication and reply the technological means such as range finding, electromagnetic wave collision avoidance radar.But, for subway train, because most of circuit is underground, the effect of existing train anti-collision technique in the tunnel is not good, especially in non-straight long distance tunnel, be difficult to the driving safety of Effective Raise train, can not well avoid the train collision accident to occur.Take the electromagnetic wave collision avoidance radar as example, in the tunnel, because the impact of inner facility and the restriction in space, the high-frequency electromagnetic wave attenuation is very fast, echo is complicated, and subway line has the heave and set gradient and a large amount of bend, the visual blind area that chaufeur has little time to brake when having a lot of generation dangerous situation, thereby in the tunnel, be difficult to effectively play a role.
Summary of the invention
For the defective that exists in the above-mentioned prior art, technical problem to be solved in the utility model provides a kind of train collision avoidance system of warning based on sound wave that can improve the driving safety of train in the tunnel.
In order to solve the problems of the technologies described above, a kind of train collision avoidance system of warning based on sound wave provided by the utility model, relate to the train traffic network that includes many trains, it is characterized in that: comprise a plurality of sound waves consistent with train quantity in the train traffic network unit of warning, each sound wave corresponding train in unit of warning;
Described sound wave sound wave receiving device, a signal control treatment facility, that the unit comprises that an acoustic emission apparatus, that is used for the emission sound wave is used for the receiving sound wave terminal of warning of warning;
Described acoustic emission apparatus is provided with the signal input part of warning, and described sound wave receiving device is provided with the signal output part of warning, and the described terminal of warning is provided with the signal input part of warning;
Described signal control treatment facility is provided with the signal output part of warning, the signal input part of warning, early warning signal mouth, and be built-in with for the output signal of controlling its each signal output part, and the signal processing module of the incoming signal of its signal input part of warning of Treatment Analysis, its signal output part of warning is received the signal input part of warning of acoustic emission apparatus, its signal input part of warning is received the signal output part of warning of sound wave receiving device, and its early warning signal mouth is received the signal input part of warning of the terminal of warning;
Each sound wave unit of warning is installed on the corresponding train, and sound wave receiving device wherein is installed in the headstock of corresponding train, and acoustic emission apparatus then is installed in the tailstock of corresponding train.
Further, the described terminal of warning is installed in the operator's compartment of corresponding train, and the terminal of warning is provided with the information generation part of warning.
Further, the early warning signal mouth of described signal control treatment facility accesses brake system and/or the automatic operational protection system of corresponding train.
Further, the described sound wave unit of warning also comprises a power equipment supply, be built-in with uninterrupted power supply (UPS) in the described power equipment supply, the power input of described uninterrupted power supply (UPS) is received the power supply mouth of corresponding train, and its feeder ear is received the power input of acoustic emission apparatus, sound wave receiving device, the terminal of warning and signal control treatment facility.
Further, described acoustic emission apparatus comprises power amplifier and at least one loud speaker, the source signal input end of described power amplifier consists of the signal input part of warning of acoustic emission apparatus, and the amplifying signal mouth of power amplifier is received the electric signal input end of each loud speaker.
Further, described loud speaker is a kind of in dynamic loud speaker, electrostatic loudspeaker, magnetic loudspeaker, piezo-electric loudspeaker, the pneumatic type loud speaker, or multiple combination wherein.
Further, described sound wave receiving device comprises preamplifier, signal conditioner and at least one microphone, the conditioned signal mouth of described signal conditioner consists of the signal output part of warning of sound wave receiving device, the amplifying signal mouth of described preamplifier is received the source signal input end of signal conditioner, and the source signal input end of preamplifier is received respectively the electrical signal of each microphone.
Further, described microphone is a kind of in capacitor microphone, piezoelectric microphone, dynamical microphone, the electret microphone, or multiple combination wherein.
The train collision avoidance system of warning based on sound wave that the utility model provides, spacing before and after the employing sound wave is monitored between the car, do not rely on relevant device and the systems such as existing signal, communication, have very strong independence and reliability, both can play under normal operation or emergency rating that long distance is warned, the Anti-bumping protection effect, thereby reduce risk of collision and the loss of train in the tunnel; Also can independently realize to a certain extent movable block (Moving Block) mechanism of train, tunnel line is guaranteed that efficiency of operation provides actual help in normal operation or degradation situation, relatively existing train anti-collision technique has low, simple and reliable, the compatible good advantage of application cost; System and device is fully vehicle-mounted thereby need hardly circuit is done extra construction and maintenance, and electric power, signal and the communication system of existing line do not produced interference, and personnel without any injury, are particularly suitable for using in the city underground circuit.
Description of drawings
The structural representation of Fig. 1 train collision avoidance system that to be the utility model embodiment warn based on sound wave;
The warn structural representation of unit of sound wave in Fig. 2 train collision avoidance system that to be the utility model embodiment warn based on sound wave;
The avoiding collision diagram of circuit of Fig. 3 train collision avoidance system that to be the utility model embodiment warn based on sound wave.
The specific embodiment
Below in conjunction with description of drawings embodiment of the present utility model is described in further detail, but present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof all should be listed protection domain of the present utility model in.
Such as Fig. 1-shown in Figure 2, a kind of train collision avoidance system of warning based on sound wave that the utility model embodiment provides, relate to the train traffic network that includes many trains 1, it is characterized in that: comprise a plurality of sound waves consistent with train 1 quantity in the train traffic network unit of warning, each sound wave corresponding train 1 in unit of warning;
Described sound wave sound wave receiving device 3, a signal control treatment facility 4, that the unit comprises that an acoustic emission apparatus 2, that is used for the emission sound wave is used for the receiving sound wave terminal 5 of warning of warning;
Each sound wave unit of warning is installed on the corresponding train, and sound wave receiving device 3 wherein is installed in the headstock of corresponding train 1,2 tailstock that are installed in corresponding train 1 of acoustic emission apparatus.
As shown in Figure 2, described acoustic emission apparatus is provided with the signal input part of warning, and described sound wave receiving device is provided with the signal output part of warning, and the described terminal of warning is provided with the signal input part of warning;
Described signal control treatment facility is provided with the signal output part of warning, the signal input part of warning, early warning signal mouth, and be built-in with for the output signal of controlling its each signal output part, and the signal processing module of the incoming signal of its signal input part of warning of Treatment Analysis, its signal output part of warning is received the signal input part of warning of acoustic emission apparatus, its signal input part of warning is received the signal output part of warning of sound wave receiving device, and its early warning signal mouth is received the signal input part of warning of the terminal of warning;
Among the utility model embodiment, the described terminal of warning is installed in the operator's compartment of corresponding train, and the terminal of warning is provided with the information generation part of warning.
The described information generation part of warning comprises the sound generation part (such as buzzer phone) of warning, warn light generation part (such as telltale lamp), the read-out of warning, and the sound generation part of warning of the terminal of warning, the light generation part of warning, the read-out of warning are respectively received the signal input part of warning of the terminal of warning through the circuit of warning;
Among the utility model embodiment, the early warning signal mouth of described signal control treatment facility accesses brake system and/or the automatic operational protection system of corresponding train.
Among the utility model embodiment, the described sound wave unit of warning also comprises a power equipment supply, be built-in with uninterrupted power supply (ups) Unity in the described power equipment supply, the power input of described uninterrupted power supply (UPS) is received the power supply mouth of corresponding train, and its feeder ear is received the power input of acoustic emission apparatus, sound wave receiving device, the terminal of warning and signal control treatment facility.
Among the utility model embodiment, described acoustic emission apparatus is prior art, comprise power amplifier and at least one loud speaker, the source signal input end of described power amplifier consists of the signal input part of warning of acoustic emission apparatus, the amplifying signal mouth of power amplifier is received the electric signal input end of each loud speaker, described loud speaker is dynamic loud speaker, electrostatic loudspeaker, magnetic loudspeaker, piezo-electric loudspeaker, a kind of in the pneumatic type loud speaker, or multiple combination wherein, the quantity of loud speaker can be arranged in loudspeaker array with each loud speaker during more than one.
Among the utility model embodiment, described sound wave receiving device is prior art, comprise preamplifier, signal conditioner and at least one microphone, the conditioned signal mouth of described signal conditioner consists of the signal output part of warning of sound wave receiving device, the amplifying signal mouth of described preamplifier is received the source signal input end of signal conditioner, the source signal input end of preamplifier is received respectively the electrical signal of each microphone, described microphone is capacitor microphone, piezoelectric microphone, dynamical microphone, a kind of in the electret microphone, or multiple combination wherein.
Among the utility model embodiment, described signal control treatment facility is micro controller system, and the circuit of warning in the described terminal of warning is prior art.
As shown in Figure 3, the avoiding collision of the train collision avoidance system of warning based on sound wave that provides of the utility model embodiment is as follows:
The acoustic emission apparatus that each train all utilizes the signal control treatment facility control tailstock is to the train rear emission sound wave signal of warning, the described sound wave signal of warning is the monofrequency sound wave, or the multi-frequency sound wave that is combined by the sound wave of a plurality of different frequencies, the sound wave signal of warning can be launched with intermittent mode, also can launch in a continuous manner;
The sound wave that each train all utilizes the sound wave receiving device the to receive the place ahead train emission signal of warning, and after the sound wave of receiving the place ahead train emission is warned signal, be input to the signal control treatment facility and analyze judgement, if judging the sound wave of the receiving signal of warning is sent by front truck, namely according to the warn propagation characteristic of the sound wave in the signal of the sound wave received, utilize the signal control treatment facility to estimate spacing between Ben Che and the place ahead train, judge that more whether spacing between this car and the front truck is less than safety distance;
If the spacing between this car that calculates and the front truck is less than the safety distance threshold value, judge that namely spacing between this car and the front truck is less than safety distance, the signal control treatment facility is namely exported early warning signal to the terminal of warning of this car, make the terminal of warning send the information of warning, and to the brake system of this car output speed-slackening signal, make the brake system of this car implement brake operating to this car, or export restricting signal to the protection system of this car, make the protection system of this car implement the speed limit operation to this car;
Described safety distance threshold value is by the predefined fixed value of signal control treatment facility, or advances the variate-value that speed gauge calculates by the signal control treatment facility according to predefined fixed value and this garage;
The described information of warning comprises the sound of warning (such as the buzzer of buzzer phone), the light of warning (such as the telltale lamp flicker), the literal of warning and/or the pattern of warning.
Among the utility model embodiment, estimating the Acoustic Wave Propagation Characteristics of spacing institute foundation between this car and the place ahead train, is warn decay characteristics and/or the dispersion characteristic of the sound wave in the signal of sound wave;
Signal is the monofrequency sound wave if sound wave is warned, then directly estimate spacing between Ben Che and the place ahead train according to the decay characteristics of this monofrequency sound wave and/or dispersion characteristic, the monofrequency sound wave of frequency values in the 800Hz-1600Hz scope such as the sound wave signal of warning, on each train all the warn initial magnitude of signal of pre-set sound wave, the pad value of signal so that the sound wave that calculating receives is warned, train receives sound wave and warns behind the signal, judge that this signal compares initial magnitude average attenuation amplitude greater than 25dB, assert that namely spacing between this car and the front truck is less than the safety distance threshold value;
Signal is the multi-frequency sound wave that the sound wave by a plurality of different frequencies combines if sound wave is warned, then according to the warn propagation characteristic difference of each different frequency sound wave in the signal of sound wave, frequency values by each different frequency sound wave in the signal that sound wave is warned, amplitude, the features such as dispersion are analyzed, by the amplitude of distance with acoustical signal, variation characteristic mapping (Mapping) relation of the features such as dispersion, calculate the spacing between Ben Che and the place ahead train, warn signal by the monofrequency sound wave of a frequency values in the 800Hz-1600Hz scope such as sound wave, and the monofrequency sound wave of a frequency values in the 8kHz-12kHz scope forms, train receives sound wave and warns behind the signal, two monofrequency acoustic wave frequency values because sound wave is warned in the signal differ larger, both propagation characteristics also have larger difference, so that train receives the warn attenuation amplitude of two monofrequency sound waves in the signal of sound wave, dispersion characteristic also has larger difference, attenuation amplitude by two monofrequency sound waves in the signal that sound wave is warned, dispersion characteristic is analyzed, by the amplitude of distance with acoustical signal, variation characteristic mapping (Mapping) relation of the features such as dispersion, can calculate the spacing between Ben Che and the place ahead train, its design accuracy is greater than the sound wave that is comprised of the single monofrequency sound wave signal of warning;
Among the utility model embodiment, described sound wave warn in the signal each sound wave can be frequency less than the infrasound signal of 20Hz, also can be the audio frequency sound signal of 20Hz-20kHz, also can be the above ultrasonic signal of 20kHz.
Because the propagation speed of sound wave surpasses per hour 1200 kilometers, running velocity much larger than general train, and the air sound wave transmit and receive fairly simple, relevant device is ripe, reliable, cheap, train forms default safety distance before and after can easily guaranteeing, not only simply but also reliable, had good value of service and application prospect.
Claims (8)
1. train collision avoidance system of warning based on sound wave, relate to the train traffic network that includes many trains, it is characterized in that: comprise a plurality of sound waves consistent with train quantity in the train traffic network unit of warning, each sound wave corresponding train in unit of warning;
Described sound wave sound wave receiving device, a signal control treatment facility, that the unit comprises that an acoustic emission apparatus, that is used for the emission sound wave is used for the receiving sound wave terminal of warning of warning;
Described acoustic emission apparatus is provided with the signal input part of warning, and described sound wave receiving device is provided with the signal output part of warning, and the described terminal of warning is provided with the signal input part of warning;
Described signal control treatment facility is provided with the signal output part of warning, the signal input part of warning, early warning signal mouth, and be built-in with for the output signal of controlling its each signal output part, and the signal processing module of the incoming signal of its signal input part of warning of Treatment Analysis, its signal output part of warning is received the signal input part of warning of acoustic emission apparatus, its signal input part of warning is received the signal output part of warning of sound wave receiving device, and its early warning signal mouth is received the signal input part of warning of the terminal of warning;
Each sound wave unit of warning is installed on the corresponding train, and sound wave receiving device wherein is installed in the headstock of corresponding train, and acoustic emission apparatus then is installed in the tailstock of corresponding train.
2. train collision avoidance system of warning based on sound wave according to claim 1, it is characterized in that: the described terminal of warning is installed in the operator's compartment of corresponding train, and the terminal of warning is provided with the information generation part of warning.
3. train collision avoidance system of warning based on sound wave according to claim 1 is characterized in that: the early warning signal mouth of described signal control treatment facility accesses the brake system of corresponding train and/or automatic operational protection system.
4. train collision avoidance system of warning based on sound wave according to claim 1, it is characterized in that: the described sound wave unit of warning also comprises a power equipment supply, be built-in with uninterrupted power supply (UPS) in the described power equipment supply, the power input of described uninterrupted power supply (UPS) is received the power supply mouth of corresponding train, and its feeder ear is received the power input of acoustic emission apparatus, sound wave receiving device, the terminal of warning and signal control treatment facility.
5. train collision avoidance system of warning based on sound wave according to claim 1, it is characterized in that: described acoustic emission apparatus comprises power amplifier and at least one loud speaker, the source signal input end of described power amplifier consists of the signal input part of warning of acoustic emission apparatus, and the amplifying signal mouth of power amplifier is received the electric signal input end of each loud speaker.
6. train collision avoidance system of warning based on sound wave according to claim 5, it is characterized in that: described loud speaker is a kind of in dynamic loud speaker, electrostatic loudspeaker, magnetic loudspeaker, piezo-electric loudspeaker, the pneumatic type loud speaker, or multiple combination wherein.
7. train collision avoidance system of warning based on sound wave according to claim 1, it is characterized in that: described sound wave receiving device comprises preamplifier, signal conditioner and at least one microphone, the conditioned signal mouth of described signal conditioner consists of the signal output part of warning of sound wave receiving device, the amplifying signal mouth of described preamplifier is received the source signal input end of signal conditioner, and the source signal input end of preamplifier is received respectively the electrical signal of each microphone.
8. train collision avoidance system of warning based on sound wave according to claim 7 is characterized in that: described microphone is a kind of in capacitor microphone, piezoelectric microphone, dynamical microphone, the electret microphone, or multiple combination wherein.
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| CN 201220376870 CN202703635U (en) | 2012-07-31 | 2012-07-31 | Train anti-collision system based on acoustic warning |
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| CN 201220376870 CN202703635U (en) | 2012-07-31 | 2012-07-31 | Train anti-collision system based on acoustic warning |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102756749A (en) * | 2012-07-31 | 2012-10-31 | 上海中科高等研究院 | Train anticollision system on basis of sound wave warning and anticollision method thereof |
| CN102756748A (en) * | 2012-07-31 | 2012-10-31 | 上海中科高等研究院 | Train anticollision system on basis of sound wave communication and anticollision method thereof |
| CN106103236A (en) * | 2014-04-08 | 2016-11-09 | 西门子公司 | The method relocated for rail vehicle and configuration system |
| CN110979382A (en) * | 2019-12-30 | 2020-04-10 | 交控科技股份有限公司 | Train electromagnetic anti-collision system and method |
| CN111580111A (en) * | 2020-05-29 | 2020-08-25 | 厦门理工学院 | Transmitting terminal, receiving terminal, method and system for underwater sound wave distance measurement |
-
2012
- 2012-07-31 CN CN 201220376870 patent/CN202703635U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102756749A (en) * | 2012-07-31 | 2012-10-31 | 上海中科高等研究院 | Train anticollision system on basis of sound wave warning and anticollision method thereof |
| CN102756748A (en) * | 2012-07-31 | 2012-10-31 | 上海中科高等研究院 | Train anticollision system on basis of sound wave communication and anticollision method thereof |
| CN106103236A (en) * | 2014-04-08 | 2016-11-09 | 西门子公司 | The method relocated for rail vehicle and configuration system |
| CN106103236B (en) * | 2014-04-08 | 2018-06-22 | 西门子公司 | For the method for rail vehicle repositioning and configuration system |
| CN110979382A (en) * | 2019-12-30 | 2020-04-10 | 交控科技股份有限公司 | Train electromagnetic anti-collision system and method |
| CN111580111A (en) * | 2020-05-29 | 2020-08-25 | 厦门理工学院 | Transmitting terminal, receiving terminal, method and system for underwater sound wave distance measurement |
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Owner name: SHANGHAI ADVANCED RESEARCH INSTITUTE, CHINESE ACAD Free format text: FORMER OWNER: SHANGHAI ZHONGKE INSTITUTE FOR ADVANCED STUDY Effective date: 20131022 |
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Effective date of registration: 20131022 Address after: 200000 Shanghai city Pudong New Area Hartcourt Road No. 99 Patentee after: Shanghai Advanced Research Institute, Chinese Academy of Sciences Patentee after: Institute of acoustics, Chinese Academy of Sciences Address before: 200000 Shanghai Zhangjiang High Tech Park of Pudong New Area Hartcourt Road No. 99 Patentee before: Shanghai Zhongke Institute for Advanced Study Patentee before: Institute of acoustics, Chinese Academy of Sciences |
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