BTM DEVICE AND IMPLEMENTATION METHOD FOR MULTI-INFORMATION FUSION TRANSMISSION BETWEEN HOST AND ANTENNA UNIT

Abstract

 There is provided a BTM device of multiple information fusion and transmission between a host and an antenna unit, comprising a host unit, an antenna unit and a coaxial cable; the coaxial cable is used for connecting the host unit and the antenna unit through coaxial connectors on both ends thereof, and transmitting information between the host and the antenna unit; the host includes a host side filter circuit, for separating signals of different frequencies; and the antenna unit includes an antenna unit side filter circuit, for separating signals of different frequencies. There is further provided an implementation method of multiple information fusion and transmission between a host and an antenna unit. The technical solution of the present disclosure reduces failure rate of a BTM system and facilitates maintenance and management in future.

Description

[0001] The present application claims priority of Chinese Patent Application No. 201711106342.1filed on November 10, 2017, the disclosure of which is incorporated herein by reference in its entirety as part of the present application.

TECHNICAL FIELD

[0002] The present disclosure belongs to a railway signal control field, and particularly, to a BTM device and an implementation method of multiple information fusion and transmission between a host and an antenna unit.

BACKGROUND

[0003] A BTM (Balise Transmission Module) device is an important part of a balise system, and is mainly used for receiving balise information transmitted by a ground balise, processing the balise information to obtain a balise message, and reporting the balise message to a train operation control system, so as to facilitate the train operation control system to control operation of the train.

[0004] The BTM device is mainly composed of a host and an antenna unit, and signals on a cable between the host and the antenna unit include:

An energy signal D1: transmitted from the host to the antenna unit, radio frequency energy (corresponding to A4 described in European Standard Balise Specification SUBSET-036) being transmitted to the ground balise by the antenna unit, for activating the balise to work;

A balise message signal D2: transmitted from the antenna unit to the host, an uplink balise message (corresponding to A1 described in European Balise Specification SUBSET-036) being transmitted to the antenna unit by the balise, and the balise message being processed by the host.

[0005] A self-check signal D3: transmitted from the antenna unit to the host, an uplink self-check signal generated by the antenna unit, for monitoring working state of the antenna unit by the host;
A self-check trigger signal D4: transmitted from the host to the antenna unit, generated by the host according to certain rules, triggering a self-check of the antenna unit after provided to the antenna unit.

[0006] In prior art, multiple cables or multi-core cables are used for transmitting the 4-way signals described above.

[0007] The prior art has disadvantages as follows:

Cost of the multiple cables or multi-core cables is high;

The multiple cables or multi-core cables increase connecting pieces of the host and the antenna, and the multi-core cables are susceptible to shrinkage due to influence of wiring and stretching, i.e., failure rate of the solution is increased.

[0008] The cables are buried in a body of train, replacement is time-consuming and replacement process is complicated.

[0009] Therefore, it is imperative to adopt effective means to remove these problems.

SUMMARY

[0010] An objective of the present disclosure is to present a BTM device and an implementation method of multiple information fusion and transmission between a host and an antenna unit, with respect to the problems existing in the prior art that high failure rate and complicated maintenance procedures are caused by using the multiple cables and multi-core cables, so as to realize multiple information fusion and transmission between the host and the antenna unit.

[0011] A technical solution of the present disclosure is that:
There is provided a BTM device of multiple information fusion and transmission between a host and an antenna unit, comprising a host unit, an antenna unit and a coaxial cable; the host unit is used for generating a radio frequency energy signal, decoding a balise message and transmitting the balise message to a train operation transmission system; the antenna unit is used for transmitting radio frequency energy and transmitting uplink and downlink signals; the coaxial cable is used for connecting the host unit and the antenna unit through coaxial connectors on both ends thereof, and transmitting information between the host and the antenna unit; the host includes a host side filter circuit, for separating signals of different frequencies; and the antenna unit includes an antenna side filter circuit, for separating signals of different frequencies.

[0012] Further, the host side filter circuit includes a filter 1 and a filter 2; the filter 1 performs high impedance to an energy signal, a balise message signal and a self-check signal, and performs low impedance to a self-check trigger signal, the self-check trigger signal being transmitted to the antenna unit through the filter 1; the filter 2 performs high impedance to the energy signal and the self-check trigger signal, the balise message signal and the self-check signal being decoded in the host after passing the filter 2, and the energy signal being directly transmitted to the antenna unit without passing the filter 1 and filter 2.

[0013] Further, the antenna side filter circuit includes a protective circuit, a transmitting ring, a receiving ring of an antenna unit, a self-check module and a filter;
The protective circuit is used for protecting components in an electronic circuit from being damaged by overvoltage, overcurrent, surge, electromagnetic interference and so on;
The transmitting ring of the antenna unit is used for transmitting an energy signal;
The receiving ring of the antenna unit is used for receiving a balise message signal, and receiving a self-check signal generated by a self-check module;
The self-check module is used for implementing a self-check function of the antenna unit according to the received self-check trigger signal;
The filter, located in a front end of the self-check module, performs high impedance to the energy signal, the balise message signal and the self-check signal, and performs low impedance to the self-check trigger signal;
The self-check trigger signal triggers a self-check function of the antenna unit in the self-check module after passing the filter; the energy signal is transmitted by the transmitting ring of the antenna unit; the receiving ring of the antenna unit receives the balise message signal, receives the self-check signal generated by the self-check module, and transmits these signals directly to the host without passing the filter.

[0014] Further, the transmitting ring and the receiving ring of the antenna unit do not need to be arranged separately, and a same circuit is multiplexed in a frequency division way.

[0015] There is provided an implementation method of multiple information fusion and transmission between a host and an antenna unit, for a BTM device, comprising steps of:

Step 1: analyzing characteristics of signals transmitted between a host and an antenna unit of a BTM device;

Step 2: analyzing characteristics of a coaxial cable required for transmitting respective signals, according to the characteristics of the signals;

Step 3: defining customizable signals, so as to make the customized signals and other signals be transmitted on a same coaxial cable;

Step 4: determining the characteristics of the coaxial cable, and selecting the coaxial cable to transmit the signals between the host and the antenna unit, according to actual project;

Step 5: adding a filter circuit on a BTM host side, to separate signals of different frequencies.

Step 6: adding a filter circuit on a BTM antenna unit side, to separate signals of different frequencies.

[0016] Further, transmission signals in step 1 are as follows: an energy signal, a balise message signal, a self-check signal and a self-check trigger signal.

[0017] Further, the energy signal is a continuous signal, and has a magnetic field frequency of 27.095 MHz±5 kHz; the balise message signal has a center frequency of 4.234 MHz±0.175 MHz, a frequency offset of 282.24×(1±7%) kHz; the self-check signal and the balise message signal have same characteristics; and the self-check trigger signal is customizable.

[0018] Further, electrical characteristics of the coaxial cable in step 2 are that: the coaxial cable is a 50 ohm radio frequency coaxial cable, and the length is an integral multiple of half wavelength of a frequency of a transmitted signal in a transmission medium.

[0019] Further, the customizable signal in step 3 is a self-check trigger signal; the customizable setting referring to set the self-check trigger signal to a pulse signal having a voltage equal to an operating voltage of the antenna unit.

[0020] Further, the operating voltage of the antenna unit is 24 V.

[0021] Further, the operating voltage of the antenna unit is 12 V.

[0022] Further, in step 5, a filter circuit added on a BTM host side includes a filter 1 and a filter 2; the filter 1 performs high impedance to an energy signal, a balise message signal and a self-check signal, and performs low impedance to a self-check trigger signal, the self-check trigger signal being transmitted to the antenna unit through the filter 1; the filter 2 performs high impedance to the energy signal and the self-check trigger signal, the balise message signal and the self-checking signal being decoded in the host after passing the filter 2, and the energy signal being directly transmitted to the antenna unit without passing the filter 1 and filter 2.

[0023] Further, a filter circuit added on a BTM antenna unit side in step 6 includes a protective circuit, a transmitting ring, a receiving ring of an antenna unit, a self-check module and a filter;
The protective circuit is used for protecting components in an electronic circuit from being damaged by overvoltage, overcurrent, surge, electromagnetic interference and so on;
The transmitting ring of the antenna unit is used for transmitting an energy signal;
The receiving ring of the antenna unit is used for receiving a balise message signal, and receiving a self-check signal generated by a self-check module;
The self-check module is used for completing a self-check function of the antenna unit according to the received self-check trigger signal;
The filter, located in a front end of the self-check module, performs high impedance to the energy signal, the balise message signal and the self-check signal, and performs low impedance to the self-check trigger signal;
The self-check trigger signal triggers a self-check function of the antenna unit in the self-check module after passing the filter; the energy signal is transmitted by the transmitting ring of the antenna unit; the receiving ring of the antenna unit receives the balise message signal, receives the self-check signal generated by the self-check module, and transmits these signals directly to the host without passing the filter.

[0024] Further, the transmitting ring and the receiving ring of the antenna unit do not need to be arranged separately, and a same circuit is multiplexed in a frequency division way.

[0025] As compared with the prior art, advantageous effects of the present disclosure are as follows: in the present disclosure, a coaxial cable is used by arranging the filter circuits on the BTM host side and the BTM antenna unit side, to complete the multiple information fusion and transmission between the host and the antenna unit. As compared with that the multiple cables or multi-core cables are used for data transmission in the prior art, the presend disclosure reduces failure rate of a BTM system, and facilitates maintenance and management in future.

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 

FIG. 1 is a composition diagram of a BTM device;

FIG. 2 is a processing block diagram of a host side filter circuit;

FIG. 3 is a processing block diagram of an antenna side filter circuit;

FIG. 4 is a processing flow chart of multiple information fusion of a host and an antenna unit.

Reference signs:

[0027] In FIG. 2 and FIG. 3: D1-energy signal, D2-balise message signal, D3-self-check signal, D4-self-check trigger signal.

DETAILED DESCRIPTION

[0028] Hereinafter, the technical solutions of the present disclosure will be described in a clearly and fully understandable way in connection with the drawings and specific embodiments of the present disclosure. It is obvious that the described embodiments are just a part but not all of the embodiments of the present disclosure, and the scope of the present disclosure is not limited to the embodiments described herein.

[0029] As shown in FIG. 1, there is provided a BTM device of multiple information fusion and transmission between a host and an antenna unit, comprising a host unit, an antenna unit and a coaxial cable.

[0030] The host unit is used for generating a radio frequency energy signal, decoding a balise message and transmitting the balise message to a train operation transmission system; and the host further includes a host side filter circuit, for separating signals of different frequencies.

[0031] The antenna unit is used for transmitting radio frequency energy and transmitting uplink and downlink signals; and the antenna unit further includes an antenna side filter circuit, for separating signals of different frequencies.

[0032] The coaxial cable connects the host unit and the antenna unit through coaxial connectors on both ends thereof, and transmits information between the host and the antenna unit.

[0033] Preferably, as shown in FIG. 2, in the embodiment, the host side filter circuit includes a filter 1 and a filter 2, the filter 1 shows a high impedance to an energy signal D1, a balise message signal D2 and a self-check signal D3, and perfoems low impedance to a self-check trigger signal D4, therefore, the self-check trigger signal D4 may be transmitted to the antenna unit through the filter 1; the filter 2 perfroms high impedance to the energy signal D1 and the self-check trigger signal D4, therefore, the balise message signal D2 and the self-check signal D3 are decoded in the host after passing the filter 2; and the energy signal D1 is directly transmitted to the antenna unit without passing the filter 1 and filter 2.

[0034] Preferably, as shown in FIG. 3, in the embodiment, the antenna side filter circuit includes a protective circuit, a transmitting ring, a receiving ring of an antenna unit, a self-check module and a filter;
The protective circuit is used for protecting components in an electronic circuit from being damaged by overvoltage, overcurrent, surge, electromagnetic interference and so on;
The transmitting ring of the antenna unit is used for transmitting an energy signal D1;
The receiving ring of the antenna unit is used for receiving a balise message signal D2, and receiving a self-check signal D3 generated by a self-check module;
The self-check module is used for completing a self-check function of the antenna unit according to the received self-check trigger signal D4;
The filter, located in a front end of the self-check module, performs high impedance to the energy signal D1, the balise message signal D2 and the self-check signal D3, and performs low impedance to the self-check trigger signal D4;
And thus, the self-check trigger signal D4 triggers a self-check function of the antenna unit in the self-check module after passing the filter; the energy signal D1 is transmitted by the transmitting ring of the antenna unit; the receiving ring of the antenna unit receives the balise message signal D2, and receives the self-check signal D3 generated by the self-check module, and transmits these signals directly to the host without passing the filter.

[0035] When the transmitting ring and the receiving ring of the antenna unit are arranged specifically, they may be arranged separately, or a same circuit may be multiplexed in a frequency division way.

[0036] As shown in FIG. 4, the multiple information fusion and transmission between the host and the antenna unit of the BTM device is implemented in such a way that:

Step 1: analyzing characteristics of signals transmitted between a host and an antenna unit of a BTM device;
Transmission signals are as follows: an energy signal D1, a balise message signal D2, a self-check signal D3 and a self-check trigger signal D4.
Wherein, the energy signal D1 is a continuous signal, and has a magnetic field frequency of 27.095 MHz±5 kHz; the balise message signal D2 has a center frequency of 4.234 MHz±0.175 MHz, a frequency offset of 282.24×(1±7%) kHz; the self-check signal D3 and the balise message signal D2 have same characteristics; and the self-check trigger signal D4 is customizable.

Step 2: analyzing characteristics of a coaxial cable required for transmitting respective signals, according to the characteristics of the signals;
According to analysis of the signals, electrical characteristics of the coaxial cable are that: the coaxial cable is a 50 ohm radio frequency coaxial cable, and the length is an integral multiple of half wavelength of a frequency of a transmitted signal in a transmission medium.

Step 3: defining customizable signals, so as to make the customized signals and other signals be transmitted on a same coaxial cable.
According to requirements of respective signals, in order to transmit the respective signals on the 50 ohm radio frequency coaxial cable at the same time, the D4 signal may be defined as a pulse signal having a voltage equal to an operating voltage of the antenna unit, the working voltage of the antenna may be 24 V or 12 V here, and in this way, time of interference on other signals is short, and a self-check trigger circuit of the antenna unit side may be activated by detecting the voltage of the D4 signal.

Step 4: determining the characteristics of the coaxial cable, and selecting the coaxial cable to transmit the signals between the host and the antenna unit, according to actual project.

Step 5: adding a filter circuit on a BTM host side, to separate signals of different frequencies.
As shown in FIG 2, preferably, in step 5 of the embodiment, the filter circuit added on the BTM host side includes a filter 1 and a filter 2, the filter 1 performs high impedance to an energy signal D1, a balise message signal D2 and a self-check signal D3, and performs low impedance to a self-check trigger signal D4, therefore, the self-check trigger signal D4 may be transmitted to the antenna unit through the filter 1; the filter 2 performs high impedance to the energy signal D1 and the self-check trigger signal D4; therefore, the balise message signal D2 and the self-check signal D3 are decoded in the host after passing the filter 2; and the energy signal D1 is directly transmitted to the antenna unit without passing the filter 1 and filter 2.

Step 6: adding a filter circuit on a BTM antenna unit side, to separate signals of different frequencies.

[0037] As shown in FIG 3, preferably, in step 6 of the embodiment, the filter circuit added on the antenna side includes a protective circuit, a transmitting ring, a receiving ring of an antenna unit, a self-check module and a filter;
The protective circuit is used for protecting components in an electronic circuit from being damaged by overvoltage, overcurrent, surge, electromagnetic interference and so on;
The transmitting ring of the antenna unit is used for transmitting an energy signal D1;
The receiving ring of the antenna unit is used for receiving a balise message signal D2, and receiving a self-check signal D3 generated by a self-check module;
The self-check module is used for completing a self-check function of the antenna unit according to the received self-check trigger signal D4;
The filter, located in a front end of the self-check module, shows a high impedance to the energy signal D1, the balise message signal D2 and the self-check signal D3, and shows a low impedance to the self-check trigger signal D4;
Thus, the self-check trigger signal D4 triggers a self-check function of the antenna unit in the self-check module after passing the filter; the energy signal D1 is transmitted by the transmitting ring of the antenna unit; the receiving ring of the antenna unit receives the balise message signal D2, and receives the self-check signal D3 generated by the self-check module, and transmits these signals directly to the host without passing the filter.

[0038] When the transmitting ring and the receiving ring of the antenna unit are arranged specifically, they may be arranged separately, or a same circuit may be multiplexed in a frequency division way.

[0039] The embodiment indicates that, the technical solution of the present disclosure may solve the problems that high failure rate and complicated maintenance procedures are caused by using the multiple cables and multi-core cables in the prior art.

Claims

1. A BTM device of multiple information fusion and transmission between a host and an antenna unit, comprising a host unit, an antenna unit and a coaxial cable;
the host unit, for generating a radio frequency energy signal, decoding a balise message and transmitting the balise message to a train operation transmission system;
the antenna unit, for transmitting radio frequency energy and transmitting uplink and downlink signals.
the coaxial cable, for connecting the host unit and the antenna unit through coaxial connectors on both ends thereof, and transmitting information between the host and the antenna unit;
wherein, the host includes a host side filter circuit, for separating signals of different frequencies; and the antenna unit includes an antenna side filter circuit, for separating signals of different frequencies.

2. The BTM device according to claim 1, wherein, the host side filter circuit includes a filter 1 and a filter 2; the filter 1 performs high impedance to an energy signal (D1), a balise message signal (D2) and a self-check signal (D3), and performs low impedance to a self-check trigger signal (D4), the self-check trigger signal (D4) being transmitted to the antenna unit through the filter 1; the filter 2 performs high impedance to the energy signal (D1) and the self-check trigger signal (D4), the balise message signal (D2) and the self-check signal (D3) being decoded in the host after passing the filter 2, and the energy signal (D1) being directly transmitted to the antenna unit without passing the filter 1 and filter 2.

3. The BTM device according to claim 1 or 2, wherein, the antenna side filter circuit includes a protective circuit, a transmitting ring, a receiving ring of an antenna unit, a self-check module and a filter;
the protective circuit, for protecting components in an electronic circuit from being damaged by overvoltage, overcurrent, surge, electromagnetic interference and so on;
the transmitting ring of the antenna unit, for transmitting an energy signal (D1);
the receiving ring of the antenna unit, for receiving a balise message signal (D2), and receiving a self-check signal (D3) generated by a self-check module;
the self-check module, for implementing a self-check function of the antenna unit according to the received self-check trigger signal (D4);
the filter, located in a front end of the self-check module, performing a high impedance to the energy signal (D1), the balise message signal (D2) and the self-check signal (D3), and performing a low impedance to the self-check trigger signal (D4);
the self-check trigger signal (D4) triggering a self-check function of the antenna unit in the self-check module after passing the filter; the energy signal (D1) being transmitted by the transmitting ring of the antenna unit; the receiving ring of the antenna unit receiving the balise message signal (D2), and receiving the self-check signal (D3) generated by the self-check module, and transmitting these signals directly to the host without passing the filter.

4. The BTM device according to any one of claims 1 to 3, wherein, the transmitting ring and the receiving ring of the antenna unit do not need to be arranged separately, and a same circuit is multiplexed in a frequency division way.

5. An implementation method of multiple information fusion and transmission between a host and an antenna unit, for a BTM device, comprising steps of:

step 1: analyzing characteristics of signals transmitted between a host and an antenna unit of a BTM device;

step 2: analyzing characteristics of a coaxial cable required for transmitting respective signals, according to the characteristics of the signals;

step 3: defining customizable signals, so as to make the customized signals and other signals be transmitted on a same coaxial cable;

step 4: determining the characteristics of the coaxial cable, and selecting the coaxial cable to transmit the signals between the host and the antenna unit, according to the characteristics of the signals;

step 5: adding a filter circuit on a BTM host side, to separate signals of different frequencies.

step 6: adding a filter circuit on a BTM antenna unit side, to separate signals of different frequencies.

6. The implementation method of multiple information fusion and transmission according to claim 5, wherein, transmission signals in step 1 are as follows: an energy signal (D1), a balise message signal (D2), a self-check signal (D3) and a self-check trigger signal (D4).

7. The implementation method of multiple information fusion and transmission according to claim 5 or 6, wherein, the energy signal (D1) is a continuous signal, and has a magnetic field frequency of 27.095 MHz±5 kHz; the balise message signal (D2) has a center frequency of 4.234 MHz±0.175 MHz, a frequency offset of 282.24×(1±7%) kHz; the self-check signal (D3) and the balise message signal (D2) have same characteristics; and the self-check trigger signal (D4) is customizable.

8. The implementation method of multiple information fusion and transmission according to any one of claims 5 to 7, wherein, electrical characteristics of the coaxial cable in step 2 are that: the coaxial cable is a 50 ohm radio frequency coaxial cable, and the length is an integral multiple of half wavelength of a frequency of a transmitted signal in a transmission medium.

9. The implementation method of multiple information fusion and transmission according to any one of claims 5 to 8, wherein, the customizable signal in step 3 is a self-check trigger signal (D4); the customizable setting refers to setting the self-check trigger signal (D4) to a pulse signal having a voltage equal to an operating voltage of the antenna unit.

10. The implementation method of multiple information fusion and transmission according to any one of claims 5 to 9, wherein, the operating voltage of the antenna unit is 24 V.

11. The implementation method of multiple information fusion and transmission according to any one of claims 5 to 9, wherein, the operating voltage of the antenna unit is 12 V.

12. The implementation method of multiple information fusion and transmission according to any one of claims 5-11, wherein, in step 5, a filter circuit added on a BTM host side includes a filter 1 and a filter 2; the filter 1 performs high impedance to an energy signal (D1), a balise message signal (D2) and a self-check signal (D3), and performs low impedance to a self-check trigger signal (D4), the self-check trigger signal (D4) being transmitted to the antenna unit through the filter 1; the filter 2 performs high impedance to the energy signal (D1) and the self-check trigger signal (D4), the balise message signal (D2) and the self-checking signal (D3) being decoded in the host after passing the filter 2, and the energy signal (D1) being directly transmitted to the antenna unit without passing the filter 1 and filter 2.

13. The implementation method of multiple information fusion and transmission according to any one of claims 5 to 12, wherein, a filter circuit added on a BTM antenna unit side in step 6 includes a protective circuit, a transmitting ring, a receiving ring of an antenna unit, a self-check module and a filter;
the protective circuit, for protecting components in an electronic circuit from being damaged by overvoltage, overcurrent, surge, electromagnetic interference and so on;
the transmitting ring of the antenna unit, for transmitting an energy signal (D1);
the receiving ring of the antenna unit, for receiving a balise message signal (D2), and receiving a self-check signal (D3) generated by a self-check module;
the self-check module, for completing a self-check function of the antenna unit according to the received self-check trigger signal (D4);
the filter, located in a front end of the self-check module,performing a high impedance to the energy signal (D1), the balise message signal (D2) and the self-check signal (D3), and performing a low impedance to the self-check trigger signal (D4);
the self-check trigger signal (D4) triggering a self-check function of the antenna unit in the self-check module after passing the filter; the energy signal (D1) being transmitted by the transmitting ring of the antenna unit; the receiving ring of the antenna unit receiving the balise message signal (D2), and receiving the self-check signal (D3) generated by the self-check module, and transmitting these signals directly to the host without passing the filter.

14. The implementation method of multiple information fusion and transmission according to any one of claims 5 to 13, wherein, the transmitting ring and the receiving ring of the antenna unit do not need to be arranged separately, and a same circuit is multiplexed in a frequency division way.

Drawing