CN108574542B - BTM aging test system - Google Patents
BTM aging test system Download PDFInfo
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- CN108574542B CN108574542B CN201810535934.3A CN201810535934A CN108574542B CN 108574542 B CN108574542 B CN 108574542B CN 201810535934 A CN201810535934 A CN 201810535934A CN 108574542 B CN108574542 B CN 108574542B
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- btm
- radio frequency
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- 27mhz
- aging test
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
- H04B17/18—Monitoring during normal operation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
Abstract
The invention discloses a BTM aging test system, which comprises an A interface simulation device, an upper computer, a serial server and a BTM host to be tested; the upper computer is communicated with the BTM host through a serial server; the A interface simulation device is connected with the BTM host through a BTM antenna cable; the A interface simulation device comprises a radio frequency resistor, an RSG, a 27MHz filter plate and a radio frequency connector; the radio frequency resistor is used as a load to replace a BTM antenna and is used for absorbing 27MHz radio frequency signal energy transmitted by the BTM host; the RSG program comprises a test message, and 4.23MHz message information is sent to the BTM host at regular time; the radio frequency connector is connected with the BTM antenna cable, the radio frequency resistor and the 27MHz filter plate and transmits signals; the BTM aging test system can monitor the running states of a plurality of BTM hosts to be tested in real time, and realize high-efficiency batch aging test; meanwhile, the system eliminates electromagnetic radiation and electromagnetic interference in the aging process.
Description
Technical Field
The invention relates to a BTM aging test device, in particular to an electromagnetic radiation-free aging test device.
Background
In the existing BTM aging mode, a BTM host is connected with a BTM antenna, and a manual shaking responder sends message information for the BTM host. The 27MHz energy emitted by the BTM antenna is strong, and strong electromagnetic radiation exists in a certain space, so that personnel need to be protected; meanwhile, electromagnetic interference is caused to the short-distance test equipment, and the short-distance test equipment and other tests are influenced; and a plurality of BTM antennas are needed for batch aging test, so that the occupied space is large.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: 1. eliminating electromagnetic radiation and electromagnetic interference in the running process of the aging test system; 2. and the real-time monitoring of the running states of a plurality of BTM hosts is realized.
The invention provides a BTM aging test system, which comprises an A interface simulation device, an upper computer, a serial server and a BTM host to be tested;
the upper computer is communicated with the BTM host through a serial server; the A interface simulation device is connected with the BTM host through a BTM antenna cable;
the A interface simulation device comprises a radio frequency resistor, an RSG, a 27MHz filter plate and a radio frequency connector;
the radio frequency resistor is used as a load to replace a BTM antenna and is used for absorbing 27MHz radio frequency signal energy transmitted by the BTM host; the RSG program comprises a test message, and can set a message sending time interval to regularly send 4.23MHz message information for the BTM host; the 27MHz filter plate is connected with the output end of the RSG; the radio frequency connector is connected with the BTM antenna cable, the radio frequency resistor and the 27MHz filter plate and transmits signals;
the BTM aging test system can monitor the running states of a plurality of BTM hosts to be tested in real time through upper computer software in an upper computer, so that high-efficiency batch aging test is realized; meanwhile, the system eliminates electromagnetic radiation and electromagnetic interference in the aging process.
The invention can produce the following technical effects: almost all the energy of the 27MHz radio frequency signal transmitted by the BTM host machine is absorbed by the 50 omega radio frequency resistor, so that the electromagnetic radiation and the electromagnetic interference are eliminated; the RSG sends message information to the BTM host at regular time, so that manual operation is omitted, and the working efficiency is improved; the upper computer realizes real-time monitoring of the running states of a plurality of BTM hosts, so that the system integration level is greatly improved.
Drawings
FIG. 1 is a schematic diagram of a BTM aging test system without electromagnetic radiation according to the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
The principle of the BTM aging test process is that a BTM host transmits a 27MHz signal to provide excitation energy for a BTM antenna, a responder achieves a normal working state through energy excitation, the responder transmits 4.23MHz message information for the BTM host, the BTM antenna transmits a JC signal to the BTM host, and the working state of the BTM antenna and an antenna cable can be judged according to the JC signal voltage.
In order to solve the problem of electromagnetic radiation, the invention designs an A interface simulation device which is connected with a BTM host through a BTM antenna cable, adopts a radio frequency resistor (for example, the standard value is 50 omega) to simulate the BTM antenna load and absorb the energy of 27MHz radio frequency signals, and simultaneously adopts an RSG (reference signal generator) simulation responder with a 27MHz filtering function to send message information for the BTM host and send JC signals for the BTM host through a 27MHz filtering plate.
The BTM aging test system designed by the invention is based on an A interface simulation device and communication from TCP/IP to RS-485. The BTM aging test system comprises an A interface simulation device, an upper computer, a serial server, N tested BTM hosts and the like, wherein the upper computer is communicated with the BTM hosts through the serial server, TCP/IP communication is adopted between the upper computer and the serial server, and RS-485 communication is adopted between the serial server and the BTM hosts.
The a interface analog device includes a radio frequency resistor (e.g. 50 Ω), RSG, a 27MHz filter board, a radio frequency connector, etc., and the system composition is as shown in fig. 1.
The radio frequency resistor (50 omega) is used as a load to replace a BTM antenna (50 omega is the equivalent impedance of the BTM antenna) and is used for absorbing the energy of a 27MHz radio frequency signal transmitted by the BTM host;
the RSG program contains test messages, and can set message sending time intervals to send 4.23MHz message information for the BTM host at fixed time.
The invention designs a 27MHz filter plate which is connected with the output end of the RSG, and the 27MHz filter plate and the RSG are integrated, so that not only is the 27MHz filter function added to the RSG, but also the 27MHz filter plate obtains a 5V direct-current voltage signal from the RSG, converts the signal into a JC signal and sends the JC signal to the BTM host.
And the radio frequency connector is used for connecting the BTM antenna cable, the radio frequency resistor and the 27MHz filtering plate and transmitting signals.
The invention develops BTM aging test software (namely upper computer software), realizes the real-time monitoring of the running states of a plurality of BTM hosts and realizes high-efficiency batch aging test.
In the BTM aging test system, the A interface simulation device is connected with the BTM host through the BTM antenna cable, 10 sets of the A interface simulation devices can be installed in one 6U case in a centralized mode, and capacity expansion can be achieved on the basis.
The operation of the single system will only be described below (see fig. 1).
After the 27MHz radio frequency signal transmitted by the BTM host computer is transmitted to the radio frequency connector, the 27MHz radio frequency signal energy entering the RSG is very small and can be ignored due to the filtering effect of the 27MHz filtering plate, and almost all the 27MHz radio frequency signal energy is absorbed by the radio frequency resistor (50 omega). The 4.23MHz message information sent by the RSG is transmitted to the BTM host through the 27MHz filtering plate, the radio frequency connector and the BTM antenna cable. The JC signal that 27MHz filtering board sent, through radio frequency connector, BTM antenna cable, transmits to the BTM host computer.
The BTM hosts (see figure 1, N is a natural number, the number of the BTM hosts can be arranged according to an actual test site, the typical value is 10) are communicated with an upper computer (through a serial server), and upper computer software compares message information received by the BTM with comparison messages led in by the upper computer software and then judges the abnormal and lost conditions of the received messages. The antenna cable status reflected by the JC signal will be displayed in the detailed status of the BTM host.
In the aging test process, the upper computer displays the running state of the system and forms records including the state of the BTM host, the number of received messages, message information, message comparison results and the like.
The invention has the beneficial effects that:
1. the 27MHz radio frequency signal energy emitted by the BTM is almost completely absorbed by the radio frequency resistor, and the electromagnetic radiation and the electromagnetic interference are eliminated.
2. The RSG is internally provided with messages, 4.23MHz uplink information can be sent to the BTM at regular time, manual operation is omitted, and working efficiency is improved.
3. The A interface simulation device of the invention occupies small space, greatly saves space compared with a mode of connecting a BTM antenna, and is beneficial to BTM batch test.
4. After the scheme of converting TCP/IP to RS-485 communication is adopted, the data is transmitted by using the Ethernet, so that the system integration level is greatly improved, the aging monitoring of a plurality of BTM hosts can be realized, and the batch aging efficiency is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A BTM aging test system comprises an A interface simulation device, an upper computer, a serial server and a BTM host to be tested;
the upper computer is communicated with the BTM host through a serial server; the A interface simulation device is connected with the BTM host through a BTM antenna cable;
the A interface simulation device comprises a radio frequency resistor, an RSG, a 27MHz filter plate and a radio frequency connector;
the radio frequency resistor is used as a load to replace a BTM antenna and is used for absorbing 27MHz radio frequency signal energy transmitted by the BTM host; the RSG program comprises a test message, and can set a message sending time interval to regularly send 4.23MHz message information for the BTM host; the 27MHz filter plate is connected with the output end of the RSG; the radio frequency connector is connected with the BTM antenna cable, the radio frequency resistor and the 27MHz filter plate and transmits signals;
the BTM aging test system can monitor the running states of a plurality of BTM hosts to be tested in real time through upper computer software in an upper computer, so that high-efficiency batch aging test is realized; meanwhile, the system eliminates electromagnetic radiation and electromagnetic interference in the aging process.
2. The BTM aging test system of claim 1, wherein the 27MHz filter board and the RSG are integrated, even if the RSG is added with a 27MHz filtering function, and the JC signal is transmitted to the BTM host through the 27MHz filter board.
3. The BTM aging test system of claim 2, wherein the 27MHz filter board obtains a 5V dc voltage signal from the RSG and converts it to a JC signal that is sent to the BTM host.
4. A BTM burn-in test system according to claim 1, wherein 10 sets of said a-interface simulation apparatus can be installed in a 6U cabinet in a centralized manner or expanded on the basis of the same.
5. The BTM burn-in testing system of claim 1, wherein the host computer software is BTM burn-in testing software.
6. The BTM aging test system of claim 1, wherein after the 27MHz radio frequency signal emitted by the BTM host is transmitted to the radio frequency connector, the 27MHz radio frequency signal energy entering the RSG is small and negligible due to the filtering effect of the 27MHz filter plate, and the 27MHz radio frequency signal energy is completely absorbed by the radio frequency resistor.
7. The BTM aging testing system of claim 1, wherein the upper computer communicates with the serial server via TCP/IP, and the serial server communicates with the BTM host via RS-485 protocol.
8. The BTM aging test system of claim 2, wherein the BTM host communicates with an upper computer, and the upper computer software compares the message information received by the BTM host with the comparison message imported in the software to determine the abnormality or loss of the received message.
9. The BTM aging test system of claim 8, wherein during the aging test, the host computer displays the system operating status and forms a record including the BTM host status, the number of received messages, the message information, and the message comparison result; meanwhile, the antenna cable state reflected by the JC signal can be displayed in the detailed state of the BTM host.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810535934.3A CN108574542B (en) | 2018-05-29 | 2018-05-29 | BTM aging test system |
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|---|---|---|---|
| CN201810535934.3A CN108574542B (en) | 2018-05-29 | 2018-05-29 | BTM aging test system |
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| CN108574542A CN108574542A (en) | 2018-09-25 |
| CN108574542B true CN108574542B (en) | 2021-01-15 |
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| CN113708854B (en) * | 2021-09-03 | 2024-03-01 | 沈阳铁路信号有限责任公司 | BTM high-low temperature circulation real-time test system |
| CN114448534A (en) * | 2021-12-24 | 2022-05-06 | 北京联合大学 | Rail transit transponder interference test system |
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| CN102523056B (en) * | 2011-12-23 | 2014-07-30 | 北京交大思诺科技有限公司 | Monitoring system for BTM (balise transmission module) equipment in batch |
| CN102752419A (en) * | 2012-06-29 | 2012-10-24 | 巫少芬 | Radiation-resistant mobile phone |
| CN205142252U (en) * | 2015-12-08 | 2016-04-06 | 北京铁路信号有限公司 | System for monitor on -vehicle BTM operating condition |
| CN107547150B (en) * | 2016-06-29 | 2023-05-12 | 河南蓝信科技有限责任公司 | BTM on-line detection method and device thereof |
| CN107241149B (en) * | 2017-05-27 | 2020-11-03 | 黄骅市交大思诺科技有限公司 | LEU test aging tool and LEU test aging method |
| CN107317487A (en) * | 2017-08-31 | 2017-11-03 | 鲁东大学 | A kind of Switching Power Supply electromagnetic radiation screening arrangement based on resonance circuit |
| CN108039918B (en) * | 2017-12-07 | 2021-05-14 | 北京交大思诺科技股份有限公司 | Wireless portable BTM detector |
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