CN102490702A - Train braking wireless control system - Google Patents
Train braking wireless control system Download PDFInfo
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- CN102490702A CN102490702A CN2011103627942A CN201110362794A CN102490702A CN 102490702 A CN102490702 A CN 102490702A CN 2011103627942 A CN2011103627942 A CN 2011103627942A CN 201110362794 A CN201110362794 A CN 201110362794A CN 102490702 A CN102490702 A CN 102490702A
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Abstract
The invention discloses a train braking wireless control system, which comprises a braking control module and a plurality of braking execution modules. The braking control module produces wireless braking signals and transmits the wireless braking signals to each braking execution module. Each wireless braking signal contains an identity code only belonging to the braking control module, and the identity code is used for encrypting the wireless braking signal. The wireless braking signals sent by a train braking control module are received and identified, the braking control module belongs to the train braking control module, and the plurality of braking execution modules control each coach brake mechanism to execute braking tasks. The train braking wireless control system has the advantages of using wireless signals to transmit train braking commands, overcoming a fatal shortcoming that a traditional air braking system is slow in braking signal delivery, achieving rapid transmission of the train braking signals and synchronous brake of trains at the head and the tail, more importantly, strengthening correspondence of delivery and receiving of the wireless braking signals, avoiding malfunction caused by misidentification caused by mutual interference between the signals, and enabling the wireless braking control signals to be reliably transmitted in an objective train.
Description
Technical field
The present invention relates to a kind of wireless control system, particularly a kind of control system of train braking being carried out controlled in wireless.
Background technology
Traditional train braking control system is to utilize pressurized air to propagate brake control signal, and pressurized air provides power for train braking simultaneously.Glancing impact, the driver opens Dump valve in the train stem, and depression signal is reached whole train through the air pipe arrangement, thereby starts the brake in every joint compartment, realizes train braking.This brake system is simple and reliable, and is cheap, is widely used.Yet along with the increase of train length and the appearance of high speed train, the defective of this traditional Pneumatic brake systems is more and more outstanding: because the air signal transmission speed is very low; Its theoretical velocity is merely 380 meter per seconds; Actual propagation speed can only reach 254 meter per seconds, thereby causes from train first bus brake actuating, is passed to the trailer braking to speed-slackening signal; Need for a long time, particularly all the more so to the overlength heavy haul train.This has not only reduced brake efficiency, serious can therefore produce especially last vehicle of train as yet not abrupt deceleration vehicle push the anterior situation of abrupt deceleration vehicle, cause serious derailing roll-over accident.In fact, this train is braked nonsynchronous problem from beginning to end and has been caused in the reality operation, repeatedly great roll-over accident taking place, and becomes a principal element of restriction heavy haul train length.
Summary of the invention
Goal of the invention: to the problem and shortage of above-mentioned prior art existence; The purpose of this invention is to provide and a kind ofly realize that train brake signal is propagated fast, the train radio braking control system of the beginning and the end vehicle synchronous braking, particularly make wireless brake control signal reliable transmission in the purpose train.
Technical scheme: a kind of train braking wireless control system comprises following composition:
Control of braking module: produce the wireless brake signal, and be transmitted to each braking execution module; Said wireless brake signal comprises the identity code that only belongs to this control of braking module, and with this identity code as this wireless brake signal of key encryption;
A plurality of braking execution modules: receive, identify the wireless brake signal that the train braking control module of said braking execution module institute subordinate is sent, handle the stop mechanism in each compartment and carry out the braking task; Said braking execution module records the identity code of the train braking control module under it.
The radio wave energy is propagated with the speed that is equal to the light velocity, and therefore, the interval travel time of wireless brake control signal almost can ignore for any over long train that physically can imagine and realize.Speed-slackening signal starts from the train first bus, can affact trailer simultaneously, thereby in the critical defect that has fundamentally solved the conventional air braking.
Transmission of wireless signals exist receive easily to disturb with can't be with signal limitations defective such as in desirable range of control; Receive the wireless brake signal in different lines workshop and the influence in randol noise source on every side; The braking execution module of a train may receive a plurality of wireless brake signals, and can't identify the wireless brake signal that whether belongs to these row train, causes braking misoperation; There is traffic safety hidden danger, makes the application of transmission of wireless signals in train braking to realize.For this reason; Control of braking module to a train is given the identity code that only belongs to this control of braking module; And with this identity code as this wireless brake signal of key encryption, the braking execution module of same train records the identity code of the train braking control module of its subordinate, after the braking execution module of same train marshalling list receives the wireless brake signal; Whether modulation, identifying brake command is the wireless brake signal that the train braking control module under it is sent.If be, then carry out this brake command; If if not, then do not carry out this brake command.To improve the correspondence and the reliability of the transmission of wireless brake signal.
Above-mentioned train braking wireless control system also comprises following composition:
The guide channel of wireless brake signal transmission: realize the efficient propagation of said wireless brake signal, reduce signal attenuation, anti-stop signal conductively-closed in each compartment of train;
Wireless brake signal bonded assembly send-receive coupled antenna: the transmission efficiency that improves wireless brake signal gap between each compartment of train.
The wireless brake signal that said control of braking module produces forms the communications protocol data packet form and carries out radio transmission.
Said wireless brake signal bonded assembly send-receive coupled antenna depends on the guide channel of said wireless brake signal transmission; Avoid between railway car, setting up wired attachment hardware of easy damage, to improve the train reliability that the wireless brake signal conducts along the permutation car under abominable running environment.
The guide channel of said wireless brake signal transmission is the metal car body of train, to guarantee that each braking execution module can both receive special quality wireless brake signal in any environment.Since wireless signal have to around the characteristics of radiation propagation; In actual use; Even if the metallo-guide channel takes place damaged, produce signal guide and block, the wireless brake signal can also be propagated through original naturally air; Arrive each braking execution module, greatly improved the reliability and the safety redundancy of wireless brake control system.Need not simultaneously special metal special line is set especially, can reduce the cost of train radio braking control system.
Beneficial effect: advantage of the present invention is to utilize the order of transmission of wireless signals train braking; Overcome conventional air brake system speed-slackening signal and transmitted slow critical defect; Realized that train brake signal is propagated fast, the beginning and the end vehicle synchronous braking; For the control of braking of overlength heavy haul train provides at all, the failure-free terms of settlement; The more important thing is the transmission that strengthened the wireless brake signal and the correspondence of reception, avoided phase mutual interference between the signal and, make wireless brake control signal reliable transmission in the purpose train by the misoperation that faulty identification causes.
Description of drawings
Fig. 1 is the said control of braking module software of an embodiment diagram of circuit;
Fig. 2 is the said braking execution module of an embodiment software flow pattern.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment; Further illustrate the present invention; Should understand these embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
The present invention is applicable to the brake system of rail vehicles such as train, subway, inter-city rail transit, particularly for the overlength heavy haul train.
Like accompanying drawing 1, shown in 2, below set forth practical implementation of the present invention.
A kind of train braking wireless control system comprises following composition: guide channel, the wireless brake signal bonded assembly send-receive coupled antenna that control of braking module, a plurality of braking execution module, wireless brake signal transmit.Usually the control of braking module is directly accepted the braking indication of driver's brake-applying handle; Produce the wireless brake signal; After the radio frequency system modulation; Metal compartment through train and the send-receive coupled antenna on the compartment and clearance envelope conduct the wireless brake signal ON TRAINS, are transmitted to each braking execution module; The braking execution module is arranged on each compartment of train; After the braking execution module receives the wireless brake signal; Whether discern this wireless brake signal is the wireless brake signal that the train braking control module under it is sent; If be, then brake execution module and carry out this brake command, handle the stop mechanism in this compartment and carry out the braking task; If if not, then brake execution module and do not carry out this brake command.
In order to reach corresponding, the failure-free purpose of wireless brake signal transmission; A control of braking module to every row train is given the identity code that only belongs to this control of braking module; And with this this wireless brake signal of identity code encryption, the braking execution module records the identity code of the train braking control module under it.After the braking execution module receives the wireless brake signal, decipher, mate, thereby whether identification is the wireless brake signal that the train braking control module under it is sent through the identity code of himself putting down in writing.
The data packet that the present invention provides a kind of wireless brake signal forms form, and is as shown in the table:
| Preamble | BSID | SeqNo | Algrm | Length | CRC | WBAP Data |
Wherein:
Preamble is the preamble of data packet, is used for making things convenient for the data transmission between control of braking module and the braking execution module synchronous;
BSID is the identity code of control of braking module;
SeqNo is a sequence of data packet number;
Algrm is selected data encryption algorithm;
Length is the byte length of data packet;
Whether CRC is the proof test value of data packet, be used for detecting data packet and damaged;
WBAP Data is the brake command parameter itself that data packet carries, and its length depends on the brake command data length that need transmit at that time.
Form wireless brake signal data bag according to above-mentioned form; In order further to improve the anti-interference resistance of wireless brake signal; Prevent that the identity code mistake possibly occur because signal disturbs causes the wireless brake maloperation between the different trains; WBAP Data field to above-mentioned data packet uses BSID cooresponding with it as cipher key, encrypts with the selected AES of Algrm field, attaches simultaneously with the CRC check value.The braking execution module has only the identity code with its record, correctly deciphers and passes through the data packet verification and could carry out this brake command.Like this; The BSID that causes even if signal error occurs repeats; But because this BSID does not belong to the control of braking module of this train, can not be consistent with the identity code coupling that the braking execution module of this train is put down in writing, still can't decrypted data packet obtain the brake command parameter.
In addition, in communication process, lose, same wireless brake signal is adopted repeat repeatedly to send in order to prevent the wireless brake signal.
Claims (5)
1. train braking wireless control system is characterized in that comprising following composition:
Control of braking module: produce the wireless brake signal, and be transmitted to each braking execution module; Said wireless brake signal comprises the identity code that only belongs to this control of braking module, and with this identity code as this wireless brake signal of key encryption;
A plurality of braking execution modules: receive, identify the wireless brake signal that the train braking control module of said braking execution module institute subordinate is sent, handle the stop mechanism in each compartment and carry out the braking task; Said braking execution module records the identity code of the train braking control module under it.
2. a kind of train braking wireless control system according to claim 1 is characterized in that also comprising following composition:
The guide channel of wireless brake signal transmission: realize the efficient propagation of said wireless brake signal, reduce signal attenuation, anti-stop signal conductively-closed in each compartment of train;
Wireless brake signal bonded assembly send-receive coupled antenna: the transmission efficiency that improves wireless brake signal gap between each compartment of train.
3. a kind of train braking wireless control system according to claim 1 is characterized in that: the wireless brake signal that said control of braking module produces forms the communications protocol data packet form and carries out radio transmission.
4. a kind of train braking wireless control system according to claim 1 is characterized in that: said wireless brake signal bonded assembly send-receive coupled antenna depends on the guide channel of said wireless brake signal transmission.
5. according to claim 1 or 4 described a kind of train braking wireless control systems, it is characterized in that: the guide channel of said wireless brake signal transmission is the metal car body of train.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103627942A CN102490702A (en) | 2011-11-16 | 2011-11-16 | Train braking wireless control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103627942A CN102490702A (en) | 2011-11-16 | 2011-11-16 | Train braking wireless control system |
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| Publication Number | Publication Date |
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| CN102490702A true CN102490702A (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103627942A Pending CN102490702A (en) | 2011-11-16 | 2011-11-16 | Train braking wireless control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963396A (en) * | 2012-11-16 | 2013-03-13 | 北京交大思诺科技有限公司 | Safety protection method and device for interference from neighboring line |
| CN104608754A (en) * | 2015-02-05 | 2015-05-13 | 四川制动科技股份有限公司 | Train wireless electric pneumatic breaking control system and control method thereof |
| CN105151080A (en) * | 2015-10-13 | 2015-12-16 | 南车株洲电力机车有限公司 | Control method and system of multi-locomotives |
| CN114932930A (en) * | 2022-05-31 | 2022-08-23 | 中车青岛四方机车车辆股份有限公司 | Brake unit fault positioning method and system and train |
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| CN2825393Y (en) * | 2005-10-03 | 2006-10-11 | 深圳市远望谷信息技术股份有限公司 | Gradual braking device for passenger train |
| CN101941446A (en) * | 2009-07-09 | 2011-01-12 | 北京首科中系希电信息技术有限公司 | Controllable train tail system |
| CN101941382A (en) * | 2010-09-14 | 2011-01-12 | 中南大学 | Railway wagon electropneumatic brake system and method based on wireless communication |
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2011
- 2011-11-16 CN CN2011103627942A patent/CN102490702A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2825393Y (en) * | 2005-10-03 | 2006-10-11 | 深圳市远望谷信息技术股份有限公司 | Gradual braking device for passenger train |
| CN101941446A (en) * | 2009-07-09 | 2011-01-12 | 北京首科中系希电信息技术有限公司 | Controllable train tail system |
| CN101941382A (en) * | 2010-09-14 | 2011-01-12 | 中南大学 | Railway wagon electropneumatic brake system and method based on wireless communication |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963396A (en) * | 2012-11-16 | 2013-03-13 | 北京交大思诺科技有限公司 | Safety protection method and device for interference from neighboring line |
| CN102963396B (en) * | 2012-11-16 | 2015-09-23 | 北京交大思诺科技股份有限公司 | To safety protecting method and the device of Adjacent track interference |
| CN104608754A (en) * | 2015-02-05 | 2015-05-13 | 四川制动科技股份有限公司 | Train wireless electric pneumatic breaking control system and control method thereof |
| CN104608754B (en) * | 2015-02-05 | 2017-06-09 | 眉山中车制动科技股份有限公司 | A kind of train radio electric pneumatic breaking control system and its control method |
| CN105151080A (en) * | 2015-10-13 | 2015-12-16 | 南车株洲电力机车有限公司 | Control method and system of multi-locomotives |
| CN105151080B (en) * | 2015-10-13 | 2018-02-27 | 南车株洲电力机车有限公司 | A kind of multi-locomotive control method and its system |
| CN114932930A (en) * | 2022-05-31 | 2022-08-23 | 中车青岛四方机车车辆股份有限公司 | Brake unit fault positioning method and system and train |
| CN114932930B (en) * | 2022-05-31 | 2024-03-22 | 中车青岛四方机车车辆股份有限公司 | Brake unit fault positioning method, system and train |
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Application publication date: 20120613 |