CN201095371Y - Railway construction safety prewarning device - Google Patents
Railway construction safety prewarning device Download PDFInfo
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- CN201095371Y CN201095371Y CNU2007200817126U CN200720081712U CN201095371Y CN 201095371 Y CN201095371 Y CN 201095371Y CN U2007200817126 U CNU2007200817126 U CN U2007200817126U CN 200720081712 U CN200720081712 U CN 200720081712U CN 201095371 Y CN201095371 Y CN 201095371Y
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Abstract
The utility model discloses a railroad construction security early warming device, which is composed of a transmitting terminal and a receiving terminal, wherein, the transmitting terminal is composed of a supersonic wave module, a wireless transmitting module, an MCU module, and a power supply module, the supersonic wave module transmits signals to the MCU module, the MCU module transmits the signals received through an interface to the wireless transmitting module, and the power supply module respectively provides power for the supersonic wave module, the wireless transmitting module and the MCU module; the receiving terminal is composed of a warning module, an MCU module, a wireless receiving module, and a power supply module, wherein the wireless receiving module receives the sending signals of the wireless transmitting module in the transmitting terminal, the wireless transmitting module transmits the signals received through the interface to the MCU module, and the MCU module transmits the signals to the warning module. The railroad construction security early warming device has the advantages that the reliability and the security are both high.
Description
Technical field
The utility model relates to the construction of railways safety apparatus, especially relates to a kind of construction of railways safety early warning device.
Background technology
China's electrified contacting nets construction belongs to station back engineering construction, often big in rate of traffic flow, fireballing existing line construction, in order to ensure the progress of construction, crack, the workshop operation of just need being expert at, this has just proposed a new problem to the protection of construction safety, along with the speed-raising of railway, also requires more and more far away to the distance of safety precaution.Requirement to safety precaution is more and more higher.
And the measure of the main employing of China railways construction at present personnel protection, since the state of mind of protected personnel, awareness of safety, and the uncertain factors such as interchange between protected personnel and the workmen, be easy to cause the traffic safety accident, this just needs a set of equipment to replace personnel protection, because equipment dependability is higher, protection distance is farther, the fatigue that does not have personnel, awareness of safety, unreliable factors such as the state of mind, this has just improved safety of construction greatly.
At present both at home and abroad to the approaching forewarn system of train mainly based on both direction: a kind of is the GPS global positioning system, it utilizes GPS to learn the coordinate points that vehicle is present, and the inertia measuring equipment is learnt the vehicle direct of travel, and utilize the present coordinate points of vehicle to get a segment distance forward as estimating distance, compare according to the safe vehicle speed value that electronic chart prestored that the present speed of a motor vehicle is interior with estimating distance, then warned if the speed of a motor vehicle surpasses safe vehicle speed value; Simultaneously, in the vehicle traveling process,, give omnidistance record with vehicle actual vehicle speed, steering wheel angle, gps coordinate point and time.
Another is that a vehicle-mounted transmitter is installed ON TRAINS, and ground based terminal, be used to receive the radiofrequency signal that is loaded with the driving data, it is carried out demodulation, decoding reduction driving data, the control alarm device starts alarm, and when ground generation emergency situation, sends the radiofrequency signal that is loaded with alarm code.Though these two kinds of methods can be arrived by the early warning train, but because input is huge, and " extremely " angle that exists some to communicate by letter, intercept the many places of obstacle such as tunnel or bend etc., communication quality can sharply descend, thereby reduces the early warning effect.
The utility model content
The purpose of this utility model is a kind of reliability height, safe construction of railways safety early warning device.
In order to achieve the above object, the utility model adopts following technical scheme: a kind of construction of railways safety early warning device, constitute by transmitting terminal and receiving end, described transmitting terminal is made of ultrasonic wave module, wireless transmitter module, MCU module, power module, wherein the ultrasonic wave module transmission signals is given the MCU module, the MCU module is transferred to wireless transmitter module by interface with the signal that receives, and power module provides power supply for respectively ultrasonic wave module, wireless transmitter module, MCU module; Described receiving end is made of alarm module, MCU module, wireless receiving module, power module, wherein wireless receiving module receives the transmission signal of the wireless transmitter module in the transmitting terminal, wireless transmitter module is transferred to the MCU module by interface with the signal that receives, and the MCU module is transferred to alarm module with signal.
Whether described transmitting terminal is hung in two ends, construction of railways place, be used to detect train and arrive; Receiving end is carried at any time by the workman, is used to receive alerting signal.
Described receiving end sends signal by wireless receiving module to transmitting terminal, detects the normality of reliability of data transmission, equipment working state and shutdown and the start that the control transmitting terminal sends.
The alerting signal that alarm module in the described receiving end sends is voice or vibration.
The utility model transmitting terminal is arranged in outside two kilometers of operation fields, receiving end is carried at any time by the field operation personnel, differentiate by ultrasonic wave module whether train arrives, if, MCU module controls wireless transmitter module stops to send wireless normal signal (normal signal that transmitting terminal sends is data message or voice), sends alerting signal, after the wireless receiving module in the receiving end receives alerting signal, this alerting signal is transferred to the MCU module, and MCU module controls alarm module is reported to the police; If not, receiving end is received wireless normal signal always.Can not receive wireless normal signal if receiving end surpasses 10 seconds, may be that receiving end is reported to the police equally, to guarantee not occur failing to report situation because abnormal condition such as low voltage, device damage, equipment be stolen appear in transmitting terminal.
Described transmitting terminal is that two fixing machines are arranged in two ends, construction of railways place, receiving end is carried by the workman at any time for carrying machine, the machine that carries is in very first time section, the data that send the implication address are to first fixing machine that is in receiving condition, though this moment, second fixing machine also can receive these data, but mail returned on ground of incorrect address closes the address of second fixing machine, these data are abandoned by second fixing machine, first fixing machine just sends to the machine of carrying to the hypracoustic testing result after receiving the data of carrying the machine transmission in second time period; Carry the machine and second fixing machine and repeat above-mentioned identical operations in the 3rd time period and the 4th time period.
The utility model is at the characteristics of construction of railways; utilize observation and control technology; the communication technology; ultrasonic technology; and embedded software and hardware technology; the wireless messages that can be used for distant early warning platform is provided; at dangerous situations such as the contingent personal crises of circuit; can in time notify railway existing line workmen; in time withdraw the camp site; avoid accident to take place; simultaneously, the utility model is the characteristics at the construction of China electrified railway existing line, and to the requirement of safety precaution work; utilize performance-oriented ultrasonic transduter that detection signal is provided; adopt Redundancy Design to guarantee high reliability, adopt the double-direction radio data communication that two kilometers outer early warning are provided, to guarantee personnel's facility safe escape.
Description of drawings
Fig. 1 is a wireless receiving and dispatching scheme drawing of the present utility model;
Fig. 2 is the functional block diagram of transmitting terminal in the utility model;
Fig. 3 is the functional block diagram of receiving end in the utility model;
MAX8887 chip and peripheral circuit diagram in Fig. 4 the utility model power module;
MAX705 chip and peripheral circuit diagram in Fig. 5 the utility model power module;
MAX668 chip and peripheral circuit diagram in Fig. 6 the utility model power module;
MCU module circuit diagram in Fig. 7 the utility model;
MCU module and wireless communication module adopt the circuit diagram of 485 interfaces in Fig. 8 the utility model.
The specific embodiment
A kind of construction of railways safety early warning device of the utility model such as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, shown in Figure 8: constitute by transmitting terminal and receiving end, described transmitting terminal is made of ultrasonic wave module, wireless transmitter module, MCU module, power module, wherein the ultrasonic wave module transmission signals is given the MCU module, the MCU module is transferred to wireless transmitter module by interface with the signal that receives, and power module provides power supply for respectively ultrasonic wave module, wireless transmitter module, MCU module; Described receiving end is made of alarm module, MCU module, wireless receiving module, power module, wherein wireless receiving module receives the transmission signal of the wireless transmitter module in the transmitting terminal, wireless transmitter module is transferred to the MCU module by interface with the signal that receives, and the MCU module is transferred to alarm module with signal.Whether described transmitting terminal is hung in two ends, construction of railways place, be used to detect train and arrive; Receiving end is carried at any time by the workman, is used to receive alerting signal.Described receiving end sends signal by wireless receiving module to transmitting terminal, detects the normality of reliability of data transmission, equipment working state and shutdown and the start that the control transmitting terminal sends.The alerting signal that alarm module in the described receiving end sends is voice or vibration.
The utility model is made up of transmitting terminal and receiving end two parts:
Transmitting terminal is arranged in outside two kilometers of operation fields, by ultrasonic testing module, compositions such as wireless transport module.There is obstacle to pass through when transmitting terminal detects, starts ultrasonic wave module, differentiate whether be that train arrives, if, stop to send wireless normal signal, send alerting signal, otherwise continue to send normal signal; If receiving end is received alerting signal, judge that then train arrives; If a period of time can't receive normal signal, then the panalarm fault if receiving end receives normal signal always, represents that then train does not arrive.Receiving end is carried by the field operation personnel.
Wireless transmitting terminals as shown in Figure 2.When MCU detects the ultrasonic signal that super body mode piece returns, represent that then train arrives; At this moment, MCU starts wireless data transmission module at once, and alerting signal is sent by wireless transmitter module.
The wireless interface receiving end when wireless receiving module does not receive the data message of transmitting terminal within a certain period of time, represent that then train arrives, and the startup voice alarm circuit is carried out audio alert or vibration alarming as shown in Figure 3.
1, ultrasonic testing module (ultrasonic wave module)
The ultrasonic testing module utilizes super sonic as detection signal, be because the intrinsic characteristics of super sonic determine, the utilization of this detection module be the principle of ultrasonic ranging, the principle of ultrasonic ranging is to utilize the time difference of measuring ultrasonic emitting pulse and received pulse, comes measuring distance in conjunction with the aerial speed of transmission of super sonic again.If super sonic propagation speed in air is V, the time difference of transmitter pulse and received pulse is T, then the distance of vehicle and obstacle: D=VT/2.About ultrasonic testing module employing method be, other end at rail is laid a ultrasonic transmission device, and the radio-frequency transmissions termination is received the ultrasonic signal that this device sends, when having obstacle, the centre intercepts, the radio-frequency transmissions termination can not receive this ultrasonic signal so, is considered as train so.Because these two devices are laid than higher, near the distance of train roof, so except train, other general obstacle is difficult for intercepting super sonic.Certainly, select the proper height and the emissive porwer of ultrasonic emitting and reception, to remedy the influence of ultrasonic wave diffraction.The utility model ultrasonic wave module can adopt the CJ-1 ultrasonic distance measuring module on the existing market.Detection probe adopts: the EFR-40RSC on the existing market, it is for receiving the ultrasonic probe of one.
2, wireless data transfer module (comprising wireless transmitter module and wireless receiving module)
Wireless data transfer module of the present utility model can adopt the radio communication half-blank STR-15 of Shanghai Sang Bo electronics technology Co., Ltd.The communication channel of STR-15 is semiduplex, the signalling methods of suitable point-to-multipoint, and this mode at first needs to establish 1 main website, and all the other are slave station, and a unique address is all compiled at all stations.The coordination of communicating by letter is fully by main website control, and main website adopts the Frame of band address code to send data or order, and slave station receives all, and address code and the local address sign indicating number that receives compared, and difference is then all lost data, does not do any response; Address code is identical, then proves data to this locality, and slave station carries out different responses according to data or order that biography is come, and the data transmission of response is gone back.These work all need upper-layer protocol to finish, and can guarantee in any one moment, have only a radio station to be in transmit status in the communication network, in order to avoid the phase mutual interference.
STR-15 series low-power wireless digital transmission module provides standard RS-232, and 3 kinds of interface modes of RS-485 and UART/TTL level can directly be connected use with computing machine, user's RS-485 equipment, micro controller system or other UART device.
3, power module
Power module of the present utility model has adopted three kinds of voltages altogether, and promptly 5V, 3.3V and 12V are for reducing the volume of power module, essential with 3 kinds of voltages of a kind of voltage generation.The utility model adopts no train to send the mode of valid data in order to improve safety temporarily, has increased the power consumption of wireless sending module greatly, so should increase the capacity of power supply; The frequency range of radio receiving transmitting module reaches 433MHz than higher in addition, than higher, should reduce the ripple factor of power supply to the stability requirement of power supply as far as possible.And, when power supply is reduced to certain degree, should carries out low voltage and report to the police; Sometimes, because uncertain factor, software module can enter the endless loop state, should restart power supply automatically.
Supplying cell of the present utility model is the nickel-cadmium cell of 4 joint 2500mAH, then via power supply chip MAX8887EZK-33, the MAX668EUB of U.S. letter company, produces the voltage of 3.3VDC and 12VDC.And increase U.S. letter chip MAX705CSA in addition each voltage is monitored, and under unexpected situation, restart power supply.Concrete principle and interconnecting wiring diagram are referring to Fig. 7, Fig. 8, Fig. 9.
As shown in Figure 5, when the voltage of PFI pin was lower than 1.25V, MAX705 was restarted, and it is right to the divider resistance of PFI therefore can to calculate 5V, and value can be 1M and 373K.The WDI pin connects the output of the SMCLK of MSP430F149, and program endless loop or deadlock in MSP430 are that the WDI pin still can not get the voltage reversal signal in 1.6S be to restart MSP430.When VCC voltage was lower than 4.65V, RESET-pin output low level signal was restarted MSP430.So MAX705 promptly can monitor voltage, can prevent that also the MSP430 chip from crashing.
4, micro controller module (MCU module)
Micro controller module in the utility model can adopt the MSP430F149 micro controller system on the existing market.The MSP430 series monolithic is 16 super low-power consumptions, performance-oriented mixed-signal processor, integrate multiple pioneering technology, with 16 RISC (Reduced Instruction Set Computer) treater, super low-power consumption, high performance analog technology and the abundant interior peripheral hardware of sheet, JTAG artificial debugging.
Aspect super low-power consumption, power line voltage adopts 1.8～3.6V low voltage, power consumption 0.1 μ A only under the RAM data hold mode, and (MIPS: the million instructions per second number), the drain current maximum of I/O input port is 50nA only for activity pattern power consumption 250 μ A/MIPS.
On developing instrument, the MSP430 series monolithic is supported advanced JTAG debugging, its simulation hardware instrument (emulator) is a very simple parallel port adapter just, and the IAR Embedded Workbench that the software IDE has IAR company to provide, support C language and assembly language, very easy to use.
The topmost module of the microprocessor that uses in the system is the USART serial communication module.Each model of MSP430 series can realize the serial communication function---directly realizes or realizes by USART hardware by timer software.Wherein USART is a general serial synchronous/asynchronous communication interface, and the speed that it allows 7 or 8 bit serial bit streams to determine with the speed or the external clock of programming in advance moves into, shifts out MSP430.
MSP430F149 has two USART modules, i.e. USARTO and USART1.The USART module can begin automatic work from any low-power consumption mode automatically.All USARTO and USART1 can realize two kinds of signalling methodss: UART asynchronous communication and SPI synchronous communication, select required pattern with the control bit SYNC among the control register UCTL.
The USART module comprises 4 parts: baud rate part, the speed of control serial communication data sink and transmission; Receiving unit receives the data that serial is imported; Send part, send the data of serial output; Parallel/serial, serial/parallel conversion is finished in the interface section.System adopts the asynchronous communication model of USART module.
5, alarm module (comprising audio alert and vibration alarming), this module can adopt the product on the existing market, can adopt existing chip or module, perhaps is made up of existing components and parts.
The utility model hangs over to be used on the bar to detect whether train arrive with transmitting terminal, is referred to as fixing machine; Another is that the workman is carried at one's side at any time, is used to receive the terminal of alerting signal, is referred to as to carry machine.Because all might arrive by train in the two ends, job location, therefore two fixing machines must be arranged.And because the fixing machine of same frequency range can not be in transmit status simultaneously, basic functional principle of the present utility model as shown in Figure 1.The utility model adopts inquiry mode, as the machine that carries is in the time period 1, and the data that send implication address A are to the fixing machine A that is in receiving condition, though this moment, fixing machine B also can receive these data, but address A does not meet the address of fixing machine B, so these data machine B that is fixed abandons.Fixing machine A just sends to the machine of carrying to the hypracoustic testing result after receiving the data of carrying the machine transmission in the time period 2.Time period 3 and time period 4 repeat the operation of preceding two periods, and just target changes fixing machine B into.This communication pattern has two advantages: the one, taking into account under the situation of each communication terminal, and can not produce digital interference between mutually; The 2nd, the dutycycle of fixing machine launch time is 1 to 4, saves power consumption under the premise that security is guaranteed.Though carry the twice that the power consumption of machine is the fixing machine power consumption, charging is convenient.
Claims (5)
1, a kind of construction of railways safety early warning device, it is characterized in that: constitute by transmitting terminal and receiving end, described transmitting terminal is made of ultrasonic wave module, wireless transmitter module, MCU module, power module, wherein the ultrasonic wave module transmission signals is given the MCU module, the MCU module is transferred to wireless transmitter module by interface with the signal that receives, and power module provides power supply for respectively ultrasonic wave module, wireless transmitter module, MCU module; Described receiving end is made of alarm module, MCU module, wireless receiving module, power module, wherein wireless receiving module receives the transmission signal of the wireless transmitter module in the transmitting terminal, wireless transmitter module is transferred to the MCU module by interface with the signal that receives, and the MCU module is transferred to alarm module with signal.
Whether 2, construction of railways safety early warning device according to claim 1 is characterized in that: described transmitting terminal is hung in two ends, construction of railways place, be used to detect train and arrive; Receiving end is carried at any time by the workman, is used to receive alerting signal.
3, construction of railways safety early warning device according to claim 1 and 2; it is characterized in that: described receiving end sends signal by wireless receiving module to transmitting terminal, detects the normality of reliability of data transmission, equipment working state and shutdown and the start that the control transmitting terminal sends.
4, construction of railways safety early warning device according to claim 1 is characterized in that: the alerting signal that the alarm module in the described receiving end sends is voice or vibration.
5, construction of railways safety early warning device according to claim 1, it is characterized in that: ultrasonic wave module adopts the CJ-1 ultrasonic distance measuring module, wireless transmitter module and wireless receiving module all adopt STR-15, power module adopts MAX8887EZK-33 and MAX668EUB and MAX705CSA, and the MCU module adopts MSP430F149.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200817126U CN201095371Y (en) | 2007-11-01 | 2007-11-01 | Railway construction safety prewarning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200817126U CN201095371Y (en) | 2007-11-01 | 2007-11-01 | Railway construction safety prewarning device |
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| Publication Number | Publication Date |
|---|---|
| CN201095371Y true CN201095371Y (en) | 2008-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007200817126U Expired - Fee Related CN201095371Y (en) | 2007-11-01 | 2007-11-01 | Railway construction safety prewarning device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279608B (en) * | 2007-11-01 | 2010-11-10 | 中铁八局集团电务工程有限公司 | Safety early warning device for railway construction and method therefor |
| CN102054329A (en) * | 2010-11-04 | 2011-05-11 | 山西大学 | Railway train approaching alarm system and alarm method |
| CN104960550A (en) * | 2015-06-25 | 2015-10-07 | 北京交通大学 | Unmanned watching system for railway on-site operation protection based on double-core optical fiber interferometer |
| CN104960552A (en) * | 2015-06-25 | 2015-10-07 | 北京交通大学 | Unmanned watching system for railway on-site operation protection based on coreless optical fiber sensing |
| CN104960551A (en) * | 2015-06-25 | 2015-10-07 | 北京交通大学 | Unattended system for sensing railway field operation and protection based on photonic crystal fiber |
| CN104960549A (en) * | 2015-06-25 | 2015-10-07 | 北京交通大学 | Protective unattended system capable of sensing railway field operation on the basis of thin-core optical fiber |
-
2007
- 2007-11-01 CN CNU2007200817126U patent/CN201095371Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279608B (en) * | 2007-11-01 | 2010-11-10 | 中铁八局集团电务工程有限公司 | Safety early warning device for railway construction and method therefor |
| CN102054329A (en) * | 2010-11-04 | 2011-05-11 | 山西大学 | Railway train approaching alarm system and alarm method |
| CN102054329B (en) * | 2010-11-04 | 2012-07-25 | 山西大学 | Railway train approaching alarm system and alarm method |
| CN104960550A (en) * | 2015-06-25 | 2015-10-07 | 北京交通大学 | Unmanned watching system for railway on-site operation protection based on double-core optical fiber interferometer |
| CN104960552A (en) * | 2015-06-25 | 2015-10-07 | 北京交通大学 | Unmanned watching system for railway on-site operation protection based on coreless optical fiber sensing |
| CN104960551A (en) * | 2015-06-25 | 2015-10-07 | 北京交通大学 | Unattended system for sensing railway field operation and protection based on photonic crystal fiber |
| CN104960549A (en) * | 2015-06-25 | 2015-10-07 | 北京交通大学 | Protective unattended system capable of sensing railway field operation on the basis of thin-core optical fiber |
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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: 20080806 Termination date: 20151101 |
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| EXPY | Termination of patent right or utility model |