CN107547150B - BTM on-line detection method and device thereof - Google Patents
BTM on-line detection method and device thereof Download PDFInfo
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- CN107547150B CN107547150B CN201610509235.2A CN201610509235A CN107547150B CN 107547150 B CN107547150 B CN 107547150B CN 201610509235 A CN201610509235 A CN 201610509235A CN 107547150 B CN107547150 B CN 107547150B
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Abstract
A BTM on-line detection method and device thereof comprises a detection host, a display unit, a signal simulator, a spectrum analyzer, a radio frequency power meter, a power supply, a detection vehicle and the like; when the garage of the motor train station is overhauled, the comprehensive detection of the components such as the BTM antenna, the cable and the host computer is directly carried out without dismantling the BTM equipment, and the results of each detection can be analyzed, diagnosed and a detection report is output; in addition, the BTM online detection device can establish a historical detection ledger by taking equipment as an object, and carry out statistical analysis in a plurality of modes such as numerical values, curve diagrams and the like so as to track and analyze the performance change process of each BTM equipment; the on-line detection of the BTM equipment is similar to the regular fixed-point physical examination, so that the maintenance unit can be effectively assisted to discover the hidden trouble of the equipment performance in time, and measures can be taken in time to prevent the hidden trouble.
Description
Technical Field
The invention belongs to the field of railway signal equipment detection application, and particularly relates to a method and a device for carrying out online static detection on a transponder message transmission module device of a motor train unit in a garage of a motor train unit.
Background
The transponder message transmission module (BTM for short) comprises a BTM host and a BTM antenna, and mainly acts to send a power carrier wave for activating a transponder to the ground, receive a message sent by the transponder and transmit the message to a train control vehicle-mounted computer, is an important component of a train control system of CTCS2/3 of a motor train unit, and the performance and state of BTM equipment directly influence the operation safety of the motor train unit, so that the device is one of important working contents of maintenance units of each train control equipment for periodic detection and maintenance of the BTM equipment. At present, on-site overhaul of BTM equipment can only carry out equipment appearance inspection and function test, only can find visible appearance damage and component faults affecting the application function, can not carry out quantitative evaluation on the electrical characteristics of the BTM equipment and the message transmission performance of a transponder, and can not find hidden faults of the equipment.
The on-line BTM detection device uses technical means such as radio frequency spectrum analysis, radio frequency power measurement, simulation transponder (transponder group) and the like, through ingenious structural design, the comprehensive detection of component parts such as a BTM antenna, a cable, a host computer and the like can be directly carried out without disassembling BTM equipment when overhauling in a train garage of a motor train unit, and the detection result of each detection can be analyzed, diagnosed and a detection report can be output. In addition, the BTM online detection device can establish a historical detection ledger by taking equipment as an object, and carry out statistical analysis in a plurality of modes such as numerical values, curve diagrams and the like so as to track and analyze the performance change process of each BTM equipment. The on-line detection of the BTM equipment is similar to the regular fixed-point physical examination, so that the maintenance unit can be effectively assisted to discover the hidden trouble of the equipment performance in time, and measures can be taken in time to prevent the hidden trouble.
Disclosure of Invention
The invention aims to provide a BTM on-line detection method and a device thereof, which can directly detect the overall components such as a BTM antenna, a cable, a host computer and the like without dismantling BTM equipment when overhauling in a garage of a motor train unit, and can analyze, diagnose and output a detection report according to the detection result; in addition, the BTM online detection device can establish a historical detection ledger by taking equipment as an object, and carry out statistical analysis in a plurality of modes such as numerical values, curve diagrams and the like so as to track and analyze the performance change process of each BTM equipment; the on-line detection of the BTM equipment is similar to the regular fixed-point physical examination, so that the maintenance unit can be effectively assisted to discover the hidden trouble of the equipment performance in time, and measures can be taken in time to prevent the hidden trouble.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a BTM online detection device comprises a detection host, a display unit, a signal simulator, a spectrum analyzer, a radio frequency power meter, a power supply and a detection vehicle; the display unit, the signal simulator, the spectrum analyzer and the radio frequency power meter are electrically connected with the detection host; the signal simulator is connected with an external BTM antenna in a wireless way, the radio frequency power meter is respectively and electrically connected with an external BTM host and the BTM antenna, and the detection host is electrically connected with the BTM host;
the detection host is used for analyzing and processing detection data in real time, carrying out graphic processing on the detection data, carrying out data statistics, carrying out data trend early warning analysis, carrying out equipment fault warning analysis, carrying out analysis report output, and carrying out information storage and playback;
the display unit is used for providing a man-machine operation interface and displaying the data processed by the detection host in real time;
the signal simulator is used for receiving a BTM antenna transmitting signal; secondly, the method is used for simulating different speeds of 200km/h,250km/h,300km/h and 350km/h to generate the number of theoretically transmitted transponder packets and transmitting the number of theoretically transmitted transponder packets to an external BTM antenna; thirdly, acquiring bottom image information of the motor train unit; fourthly, the device is used for positioning the detection vehicle;
the spectrum analyzer is used for detecting the intensity and the frequency spectrum of a BTM antenna emission signal;
the radio frequency power meter is used for detecting forward power, reverse power and standing wave ratio of an output interface signal of the BTM host;
the power supply is used for input power conversion, battery charge and discharge management and equipment power supply;
the detection vehicle is used for equipment integration, movement, storage and detection.
The detection host adopts a low-power consumption processing board; the display unit adopts a three-in-one LCD KVM switcher, namely a keyboard, a mouse and a display are integrated; the detection host is communicatively coupled to an external BTM host device via RS 422.
The signal simulator comprises a detection antenna, an analog transponder, a camera and a positioning instrument;
the detection antenna mainly receives the BTM antenna transmitting signals and transmits the receiving signals to the spectrum analyzer; the detection antenna is connected with the spectrum analyzer through an antenna cable;
the simulated transponder is used for simulating different speeds of 200km/h,250km/h,300km/h and 350km/h to generate a theoretically transmitted transponder message and transmitting the theoretically transmitted transponder message to an external BTM antenna; the analog transponder is in communication connection with the detection host through RS 485;
the camera is used for acquiring bottom image information of the motor train unit; the camera is connected with the detection host through a USB interface;
the locator adopts an infrared laser module and is used for vertically aligning the relative positions between the signal simulator and the positions of the external BTM antennas.
The spectrum analyzer adopts a module type; the spectrum analyzer is connected with the detection host through a network port or a USB port.
The radio frequency power meter adopts a through radio frequency power meter and is connected with the detection host through an RS232 serial port or a network interface.
The power supply comprises a battery pack, a power supply management module and a power supply indication; the battery pack is used for supplying power to a power supply of the equipment; the power supply management module is used for battery charge and discharge management; the power supply indication is used for indicating the battery power, the battery charge and discharge state and the power supply input state of the equipment;
the power supply does not need an external power supply in the detection process of the equipment, and the equipment provides power supply for the battery pack;
the power input adopts alternating current 220V input, the power input interface adopts a standard character-shaped computer power socket, and the power input interface is arranged on the front panel of the detection vehicle.
The detection vehicle comprises a moving structure vehicle, a mechanical transmission device, a state indication and an interface; the movable structural vehicle adopts an aluminum alloy structure, and is externally provided with two directional wheels and two universal wheels with braking devices; the detection equipment is arranged in the detection vehicle;
the mechanical transmission device adopts a double-layer tray structure, and high-strength movable damping sliding rails are adopted between the trays and between the mechanical transmission device and a structural vehicle body; the mechanical transmission device can freely stretch and retract, and the equipment can stretch and retract into the detection vehicle after being used;
the equipment wiring between the equipment on the mechanical transmission device and the equipment in the structural vehicle is arranged in the plastic drag chain; the plastic drag chain is fixed between the trays and between the mechanical transmission device and the structural vehicle body through screws;
the state indication and interface can provide battery voltage display, charge and discharge state display, host reset detection, data export interface, power switch and power input interface.
A BTM online detection method comprising the steps of:
(1) according to different detection modes, connecting the detection equipment with the detected equipment, and turning on an equipment power switch;
(2) testing, and selecting equipment, detection personnel and detection grades;
(3) positioning the signal simulator and confirming that the communication interfaces are normal in communication;
(4) the spectrum analyzer collects radio frequency information sent by the BTM equipment and the signal simulator, and the radio frequency information is transmitted to the detection host after being processed; the radio frequency power meter collects BTM output power, and transmits the BTM output power to the detection host after processing; signal simulation sends a signal message of the simulation transponder to the BTM equipment;
(5) the detection host receives signal information transmitted by the spectrum analyzer, the radio frequency power meter and the BTM equipment, and the signal information is displayed in real time in a numerical and graphic mode after being processed; and meanwhile, the detection host machine performs trend analysis, data storage and management on the detection data.
In the step 1, the different detection modes are classified into primary detection, secondary detection and tertiary detection according to the grade;
the primary detection only detects the frequency spectrum of 27.095Mhz radio frequency signals transmitted by the BTM equipment; the electric connection between the devices is not needed during the primary detection;
the secondary detection is used for detecting 27.095Mhz radio frequency signals emitted by the BTM equipment and output power of a BTM host; before detection, the radio frequency power meter is connected in series between the BTM host and the BTM antenna;
the three-level detection is used for detecting 27.095Mhz radio frequency signals transmitted by the BTM equipment, output power of a BTM host and message transmission performance; before detection, the radio frequency power meter is connected in series between the BTM host and the BTM antenna, and the detection host is connected with an external BTM host communication interface;
the equipment power switch is arranged on the front panel power switch of the detection car, and the power switch is pressed down to switch on the power.
In the step 2, the equipment information is information of BTM equipment manufacturer, model number, serial number and cable length of the motor train unit, and the equipment type can be selected through software during detection;
the detection personnel can select personnel through software in the detection process for detecting the information of the work number, the name and the unit name of the operator;
before the equipment is used, the relevant equipment information and the detection personnel information of the motor train unit are input into a database through a software input interface;
the detection grade is consistent with the detection grade in the step 1.
In the step 3, the signal simulator is positioned, the image information of the motor train unit under the vehicle is acquired through a camera on the signal simulator and is transmitted to a detection host, the detection host displays the image information of the motor train unit under the vehicle in real time, a detection personnel observes the relative position of the signal simulator and a BTM antenna of the motor train unit through detection software videos and adjusts the position of the detection vehicle, and meanwhile, the signal simulator positioning instrument is observed to see whether laser points accurately irradiate four corners of the BTM antenna; if the position of the detection vehicle is inaccurate, the position of the detection vehicle is adjusted, so that the laser points emitted by the signal simulation are accurately irradiated to four corners of the BTM antenna, and the signal simulator is positioned;
each communication interface comprises an interface between a detection host and a spectrum analyzer, an interface between the detection host and a radio frequency power meter and a communication interface between the detection host and a BTM host;
the interface communication is normally judged, and the communication interface state is judged to be quite normal by the detection host sending a connection state instruction and receipt information to the spectrum analyzer, the radio frequency power meter and the BTM host serial port.
In step 4, the spectrum analyzer can collect 27.095Mhz radio frequency information sent by the BTM antenna and 4.234Mhz radio frequency information sent by the signal simulator, wherein the radio frequency information comprises signal frequency and amplitude;
the radio frequency power meter is used for collecting forward power, reverse power, peak power and standing wave ratio of output signals of the BTM host;
the signal simulator simulates the transponder to send transponder signal messages to the BTM antenna.
In step 5, the detecting host detects the output radio frequency power and the spectrum characteristics of the BTM host, so that the states and performances of the BTM transmitting unit, the cable and the antenna can be analyzed and diagnosed;
the detection host can control the signal simulator to simulate and send the transponder messages with different speeds, different transponder distances and multiple transponders, after receiving and analyzing the transponder messages by the BTM equipment, the detection host reads the BTM host receiving messages through the serial port interface and analyzes and judges the received messages, and the BTM equipment outputs transponder message transmission conditions under the condition of simulating different speeds;
the detection host can output a single detection report after detection is finished every time, and can output a BTM equipment performance change trend report by combining historical detection data.
The invention adopting the technical scheme has the following advantages:
(1) The invention adopts radio frequency detection technology and sensing technology, and can measure the transmitting power of the 27.095MHz energy signal of the transmitting module of the BTM equipment, and the indexes such as forward power, reverse power, standing wave ratio and the like transmitted by the BTM cable and the antenna.
(2) The invention adopts radio frequency detection technology and spectrum analysis technology, and analyzes the interference condition of the BTM using environment and the influence on the BTM function through spectrum measurement.
(3) The invention adopts program-controlled transponder simulating technology, can simulate various speed conditions of train operation, the number of transponders in the same group, continuous multi-group transponder conditions and special message conditions, and can test the message transmission performance of BTM.
Drawings
Fig. 1 is a system configuration diagram of the present invention.
Fig. 2 is a flow chart of the spectrum test of the present invention.
FIG. 3 is a flow chart of the BTM host output test of the present invention.
FIG. 4 is a flow chart of the BTM message transmission performance test of the present invention.
Detailed Description
The following describes the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention, where the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
As shown in FIG. 1, the BTM on-line detection device comprises a detection host, a display unit, a signal simulator, a spectrum analyzer, a radio frequency power meter, a power supply and a detection vehicle; the display unit, the signal simulator, the spectrum analyzer and the radio frequency power meter are electrically connected with the detection host; the signal simulator is connected with an external BTM antenna in a wireless way, the radio frequency power meter is respectively and electrically connected with an external BTM host and the BTM antenna, and the detection host is electrically connected with the BTM host;
as shown in fig. 2, during spectrum test, the signal simulator is moved to the position right below the BTM antenna, the detection antenna in the signal simulator receives the radio frequency signal emitted by the BTM vehicle-mounted antenna and transmits the radio frequency signal to the spectrum analyzer, the spectrum analyzer collects and calculates the radio frequency signal, the collected radio frequency signal is transmitted to the detection host through the USB interface or the network interface, and the detection host displays the amplitude, the frequency, the spectrum curve and the like of the detected signal in real time after analysis and processing;
as shown in fig. 3, BTM host output power detection; when detecting, firstly, the BTM host power supply is turned off, and the radio frequency power meter is connected between the BTM host and the BTM antenna in series; the method comprises the steps that a BTM host power supply is turned on, a radio frequency power meter collects output power signals of the BTM host and transmits collected information to a detection host through a serial port, and after analysis and processing of the detection host, a display unit displays forward power, reverse power, standing wave ratio and the like of a detected signal in real time;
as shown in fig. 4, the BTM message transmission performance is detected, by detecting the host control signal simulator, the messages of different vehicle speeds, different transponder pitches and a plurality of transponders are simulated and sent, the BTM device receives and analyzes the messages, and then the detecting host reads the message information received by the BTM host, analyzes and judges the message information and outputs the message transmission condition of the transponders of the BTM device under the condition of simulating different vehicle speeds;
the detection host is used for analyzing and processing detection data in real time, carrying out graphic processing on the detection data, carrying out data statistics, carrying out data trend early warning analysis, carrying out equipment fault warning analysis, carrying out analysis report output, and carrying out information storage and playback;
the display unit is used for providing a man-machine operation interface and displaying the data processed by the detection host in real time;
the signal simulator is used for receiving a BTM antenna transmitting signal; secondly, the method is used for simulating different speeds of 200km/h,250km/h,300km/h and 350km/h to generate the number of theoretically transmitted transponder packets and transmitting the number of theoretically transmitted transponder packets to an external BTM antenna; thirdly, acquiring bottom image information of the motor train unit; fourthly, the device is used for positioning the detection vehicle;
the spectrum analyzer is used for detecting the intensity and the frequency spectrum of a BTM antenna emission signal;
the radio frequency power meter is used for detecting forward power, reverse power and standing wave ratio of an output interface signal of the BTM host;
the power supply is used for input power conversion, battery charge and discharge management and equipment power supply;
the detection vehicle is used for equipment integration, movement, storage and detection.
The detection host adopts a low-power consumption processing board; the display unit adopts a three-in-one LCD KVM switcher, namely a keyboard, a mouse and a display are integrated; the detection host is communicatively coupled to an external BTM host device via RS 422.
The signal simulator comprises a detection antenna, an analog transponder, a camera and a positioning instrument;
the detection antenna mainly receives the BTM antenna transmitting signals and transmits the receiving signals to the spectrum analyzer; the detection antenna is connected with the spectrum analyzer through an antenna cable;
the simulated transponder is used for simulating different speeds of 200km/h,250km/h,300km/h and 350km/h to generate a theoretically transmitted transponder message and transmitting the theoretically transmitted transponder message to an external BTM antenna; the analog transponder is in communication connection with the detection host through RS 485;
the camera is used for acquiring bottom image information of the motor train unit; the camera is connected with the detection host through a USB interface;
the locator adopts an infrared laser module and is used for vertically aligning the relative positions between the signal simulator and the positions of the external BTM antennas.
The spectrum analyzer adopts a module type; the spectrum analyzer is connected with the detection host through a network port or a USB port.
The radio frequency power meter adopts a through radio frequency power meter and is connected with the detection host through an RS232 serial port or a network interface.
The power supply comprises a battery pack, a power supply management module and a power supply indication; the battery pack is used for supplying power to a power supply of the equipment; the power supply management module is used for battery charge and discharge management; the power supply indication is used for indicating the battery power, the battery charge and discharge state and the power supply input state of the equipment;
the power supply does not need an external power supply in the detection process of the equipment, and the equipment provides power supply for the battery pack;
the power input adopts alternating current 220V input, the power input interface adopts a standard character-shaped computer power socket, and the power input interface is arranged on the front panel of the detection vehicle.
The detection vehicle comprises a moving structure vehicle, a mechanical transmission device, a state indication and an interface; the movable structural vehicle adopts an aluminum alloy structure, and is externally provided with two directional wheels and two universal wheels with braking devices; the detection equipment is arranged in the detection vehicle;
the mechanical transmission device adopts a double-layer tray structure, and high-strength movable damping sliding rails are adopted between the trays and between the mechanical transmission device and a structural vehicle body; the mechanical transmission device can freely stretch and retract, and the equipment can stretch and retract into the detection vehicle after being used;
the equipment wiring between the equipment on the mechanical transmission device and the equipment in the structural vehicle is arranged in the plastic drag chain; the plastic drag chain is fixed between the trays and between the mechanical transmission device and the structural vehicle body through screws;
the state indication and interface can provide battery voltage display, charge and discharge state display, host reset detection, data export interface, power switch and power input interface.
A BTM online detection method comprising the steps of:
(1) according to different detection modes, connecting the detection equipment with the detected equipment, and turning on an equipment power switch;
(2) testing, and selecting equipment, detection personnel and detection grades;
(3) positioning the signal simulator and confirming that the communication interfaces are normal in communication;
(4) the spectrum analyzer collects radio frequency information sent by the BTM equipment and the signal simulator, and the radio frequency information is transmitted to the detection host after being processed; the radio frequency power meter collects BTM output power, and transmits the BTM output power to the detection host after processing; signal simulation sends a signal message of the simulation transponder to the BTM equipment;
(5) the detection host receives signal information transmitted by the spectrum analyzer, the radio frequency power meter and the BTM equipment, and the signal information is displayed in real time in a numerical and graphic mode after being processed; and meanwhile, the detection host machine performs trend analysis, data storage and management on the detection data.
In the step 1, the different detection modes are classified into primary detection, secondary detection and tertiary detection according to the grade;
the primary detection only detects the frequency spectrum of 27.095Mhz radio frequency signals transmitted by the BTM equipment; the electric connection between the devices is not needed during the primary detection;
the secondary detection is used for detecting 27.095Mhz radio frequency signals emitted by the BTM equipment and output power of a BTM host; before detection, the radio frequency power meter is connected in series between the BTM host and the BTM antenna;
the three-level detection is used for detecting 27.095Mhz radio frequency signals transmitted by the BTM equipment, output power of a BTM host and message transmission performance; before detection, the radio frequency power meter is connected in series between the BTM host and the BTM antenna, and the detection host is connected with an external BTM host communication interface;
the equipment power switch is arranged on the front panel power switch of the detection car, and the power switch is pressed down to switch on the power.
In the step 2, the equipment information is information of BTM equipment manufacturer, model number, serial number and cable length of the motor train unit, and the equipment type can be selected through software during detection;
the detection personnel can select personnel through software in the detection process for detecting the information of the work number, the name and the unit name of the operator;
before the equipment is used, the relevant equipment information and the detection personnel information of the motor train unit are input into a database through a software input interface;
the detection grade is consistent with the detection grade in the step 1.
In the step 3, the signal simulator is positioned, the image information of the motor train unit under the vehicle is acquired through a camera on the signal simulator and is transmitted to a detection host, the detection host displays the image information of the motor train unit under the vehicle in real time, a detection personnel observes the relative position of the signal simulator and a BTM antenna of the motor train unit through detection software videos and adjusts the position of the detection vehicle, and meanwhile, the signal simulator positioning instrument is observed to see whether laser points accurately irradiate four corners of the BTM antenna; if the position of the detection vehicle is inaccurate, the position of the detection vehicle is adjusted, so that the laser points emitted by the signal simulation are accurately irradiated to four corners of the BTM antenna, and the signal simulator is positioned;
each communication interface comprises an interface between a detection host and a spectrum analyzer, an interface between the detection host and a radio frequency power meter and a communication interface between the detection host and a BTM host;
the interface communication is normally judged, and the communication interface state is judged to be quite normal by the detection host sending a connection state instruction and receipt information to the spectrum analyzer, the radio frequency power meter and the BTM host serial port.
In step 4, the spectrum analyzer can collect 27.095Mhz radio frequency information sent by the BTM antenna and 4.234Mhz radio frequency information sent by the signal simulator, wherein the radio frequency information comprises signal frequency and amplitude;
the radio frequency power meter is used for collecting forward power, reverse power, peak power and standing wave ratio of output signals of the BTM host;
the signal simulator simulates the transponder to send transponder signal messages to the BTM antenna.
In step 5, the detecting host detects the output radio frequency power and the spectrum characteristics of the BTM host, so that the states and performances of the BTM transmitting unit, the cable and the antenna can be analyzed and diagnosed;
the detection host can control the signal simulator to simulate and send the transponder messages with different speeds, different transponder distances and multiple transponders, after receiving and analyzing the transponder messages by the BTM equipment, the detection host reads the BTM host receiving messages through the serial port interface and analyzes and judges the received messages, and the BTM equipment outputs transponder message transmission conditions under the condition of simulating different speeds;
the detection host can output a single detection report after detection is finished every time, and can output a BTM equipment performance change trend report by combining historical detection data.
The invention adopts radio frequency detection technology and sensing technology, and can measure the transmitting power of the 27.095MHz energy signal of the transmitting module of the BTM equipment, and the indexes such as forward power, reverse power, standing wave ratio and the like transmitted by the BTM cable and the antenna.
The invention adopts radio frequency detection technology and spectrum analysis technology, and analyzes the interference condition of the BTM using environment and the influence on the BTM function through spectrum measurement.
The invention adopts program-controlled transponder simulating technology, can simulate various speed conditions of train operation, the number of transponders in the same group, continuous multi-group transponder conditions and special message conditions, and can test the message transmission performance of BTM.
Claims (10)
1. A BTM online detection method, comprising the steps of:
(1) according to different detection modes, connecting the detection equipment with the detected equipment, and turning on an equipment power switch;
(2) testing, and selecting equipment, detection personnel and detection grades;
(3) positioning the signal simulator and confirming that the communication interfaces are normal in communication;
(4) the spectrum analyzer collects radio frequency information sent by the BTM equipment and the signal simulator, and the radio frequency information is transmitted to the detection host after being processed; the radio frequency power meter collects BTM output power, and transmits the BTM output power to the detection host after processing; the signal simulator sends a signal message of the simulation transponder to the BTM equipment;
(5) the detection host receives signal information transmitted by the spectrum analyzer, the radio frequency power meter and the BTM equipment, and the signal information is displayed in real time in a numerical and graphic mode after being processed; meanwhile, the detection host performs trend analysis, data storage and management on the detection data;
in the step (1), the different detection modes are classified into primary detection, secondary detection and tertiary detection according to the grade;
the primary detection only detects the frequency spectrum of 27.095Mhz radio frequency signals transmitted by the BTM equipment; the electric connection between the devices is not needed during the primary detection;
the secondary detection is used for detecting 27.095Mhz radio frequency signals emitted by the BTM equipment and output power of a BTM host; before detection, the radio frequency power meter is connected in series between the BTM host and the BTM antenna;
the three-level detection is used for detecting 27.095Mhz radio frequency signals transmitted by the BTM equipment, output power of a BTM host and message transmission performance; before detection, the radio frequency power meter is connected in series between the BTM host and the BTM antenna, and the detection host is connected with an external BTM host communication interface; the equipment power switch is arranged on the front panel power switch of the detection vehicle, and is pressed down to be powered on;
in the step (3), the signal simulator is positioned, the image information of the motor train unit under the vehicle is collected through a camera on the signal simulator and transmitted to a detection host, the detection host displays the image information of the motor train unit under the vehicle in real time, a detection person observes the relative position of the signal simulator and a BTM antenna of the motor train unit through detection software videos and adjusts the position of the detection vehicle, and meanwhile, whether a laser spot emitted by the signal simulator irradiates four corners of the BTM antenna accurately is observed; if the position of the detection vehicle is inaccurate, the position of the detection vehicle is adjusted, so that the signal simulator emits laser points to accurately irradiate four corners of the BTM antenna, and the signal simulator is positioned;
each communication interface comprises an interface between a detection host and a spectrum analyzer, an interface between the detection host and a radio frequency power meter and a communication interface between the detection host and a BTM host;
the interface communication is normally judged, and the communication interface state is judged to be quite normal by the detection host sending a connection state instruction and receipt information to the spectrum analyzer, the radio frequency power meter and the BTM host serial port.
2. The BTM online detection method of claim 1, wherein: in the step (2), the information of the equipment is information of a BTM equipment manufacturer, a model number, a serial number and a cable length of the motor train unit, and the equipment information can be selected through software during detection;
the detection personnel can select personnel through software in the detection process for detecting the information of the work number, the name and the unit name of the operator;
before the equipment is used, the equipment information and the detection personnel information of the relevant motor train unit are input into a database through a software input interface;
the detection grade is consistent with the detection grade in the step 1.
3. The BTM online detection method of claim 1, wherein: in the step (4), the spectrum analyzer can collect 27.095Mhz radio frequency information sent by the BTM antenna and 4.234Mhz radio frequency information sent by the signal simulator, wherein the radio frequency information comprises signal frequency and amplitude;
the radio frequency power meter is used for collecting forward power, reverse power, peak power and standing wave ratio of output signals of the BTM host;
the signal simulator simulates the transponder to send transponder signal messages to the BTM antenna.
4. The BTM online detection method of claim 1, wherein: in the step (5), the detecting host detects the output radio frequency power and the frequency spectrum characteristics of the BTM host, so that the states and the performances of the BTM transmitting unit, the cable and the antenna can be analyzed and diagnosed;
the detection host can control the signal simulator to simulate and send the transponder messages with different speeds, different transponder distances and multiple transponders, after receiving and analyzing the transponder messages by the BTM equipment, the detection host reads the BTM host receiving messages through the serial port interface and analyzes and judges the received messages, and the BTM equipment outputs transponder message transmission conditions under the condition of simulating different speeds;
the detection host can output a single detection report after detection is finished every time, and can output a BTM equipment performance change trend report by combining historical detection data.
5. A BTM on-line detection apparatus capable of implementing the BTM on-line detection method according to any one of claims 1 to 4, characterized in that it comprises a detection host, a display unit, a signal simulator, a spectrum analyzer, a radio frequency power meter, a power supply and a detection vehicle; the display unit, the signal simulator, the spectrum analyzer and the radio frequency power meter are electrically connected with the detection host; the signal simulator is connected with an external BTM antenna in a wireless way, the radio frequency power meter is respectively and electrically connected with an external BTM host and the BTM antenna, and the detection host is electrically connected with the BTM host;
the detection host is used for analyzing and processing detection data in real time, carrying out graphic processing on the detection data, carrying out data statistics, carrying out data trend early warning analysis, carrying out equipment fault warning analysis, carrying out analysis report output, and carrying out information storage and playback;
the display unit is used for providing a man-machine operation interface and displaying the data processed by the detection host in real time;
the signal simulator comprises a detection antenna, an analog transponder, a camera and a positioning instrument; the detection antenna mainly receives the BTM antenna transmitting signals and transmits the receiving signals to the spectrum analyzer; the detection antenna is connected with the spectrum analyzer through an antenna cable; the simulated transponder is used for simulating different speeds of 200km/h,250km/h,300km/h and 350km/h to generate a theoretically transmitted transponder message and transmitting the theoretically transmitted transponder message to an external BTM antenna; the analog transponder is in communication connection with the detection host through RS 485; the camera is used for acquiring bottom image information of the motor train unit; the camera is connected with the detection host through a USB interface; the positioning instrument adopts an infrared laser module and is used for vertically aligning the relative positions of the signal simulator and the positions of the external BTM antenna;
the spectrum analyzer is used for detecting the intensity and the frequency spectrum of a BTM antenna emission signal;
the radio frequency power meter is used for detecting forward power, reverse power and standing wave ratio of an output interface signal of the BTM host;
the power supply is used for input power conversion, battery charge and discharge management and equipment power supply;
the detection vehicle is used for equipment integration, movement, storage and detection.
6. The BTM online detection apparatus of claim 5, wherein: the detection host adopts a low-power consumption processing board; the display unit adopts a three-in-one LCDKVM switcher, namely a keyboard, a mouse and a display are integrated; the detection host is communicatively coupled to an external BTM host device via RS 422.
7. The BTM online detection apparatus of claim 5, wherein: the spectrum analyzer adopts a module type; the spectrum analyzer is connected with the detection host through a network port or a USB port.
8. The BTM online detection apparatus of claim 5, wherein: the radio frequency power meter adopts a through radio frequency power meter and is connected with the detection host through an RS232 serial port or a network interface.
9. The BTM online detection apparatus of claim 5, wherein: the power supply comprises a battery pack, a power supply management module and a power supply indication; the battery pack is used for supplying power to a power supply of the equipment; the power supply management module is used for battery charge and discharge management; the power supply indication is used for indicating the battery power, the battery charge and discharge state and the power supply input state of the equipment;
the power supply does not need an external power supply in the detection process of the equipment, and the equipment provides power supply for the battery pack;
the power input adopts alternating current 220V input, the power input interface adopts a standard character-shaped computer power socket, and the power input interface is arranged on the front panel of the detection vehicle.
10. The BTM online detection apparatus of claim 5, wherein: the detection vehicle comprises a moving structure vehicle, a mechanical transmission device, a state indication and an interface; the movable structural vehicle adopts an aluminum alloy structure, and is externally provided with two directional wheels and two universal wheels with braking devices; the detection equipment is arranged in the detection vehicle;
the mechanical transmission device adopts a double-layer tray structure, and high-strength movable damping sliding rails are adopted between the trays and between the mechanical transmission device and a structural vehicle body; the mechanical transmission device can freely stretch and retract, and the equipment can stretch and retract into the detection vehicle after being used;
the equipment wiring between the equipment on the mechanical transmission device and the equipment in the structural vehicle is arranged in the plastic drag chain; the plastic drag chain is fixed between the trays and between the mechanical transmission device and the structural vehicle body through screws;
the state indication and interface can provide battery voltage display, charge and discharge state display, host reset detection, data export interface, power switch and power input interface.
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| CN109625025B (en) * | 2018-12-13 | 2021-02-09 | 北京交大思诺科技股份有限公司 | BTM equipment early warning system |
| CN109747685B (en) * | 2019-01-15 | 2021-04-09 | 北京交大思诺科技股份有限公司 | Fault early warning platform of responder system |
| CN109774752B (en) * | 2019-01-25 | 2021-05-28 | 北京交大思诺科技股份有限公司 | BTM storehouse system of examining based on technique tests speed |
| CN109818690B (en) * | 2019-01-25 | 2021-08-17 | 北京交大思诺科技股份有限公司 | BTM library inspection system based on spectrum analysis technology |
| CN111698002B (en) * | 2020-05-28 | 2021-05-04 | 中国铁路设计集团有限公司 | Transponder monitoring device |
| CN112134630B (en) * | 2020-09-28 | 2022-07-01 | 北京交大思诺科技股份有限公司 | BTM production detecting system |
| CN113022643B (en) * | 2021-03-23 | 2022-09-27 | 上海电气泰雷兹交通自动化系统有限公司 | Fault-oriented safety transponder detection system and method |
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