CN109436039B - Digital multi-probe ectopic synchronous acquisition infrared train operation fault detection system and detection method - Google Patents
Digital multi-probe ectopic synchronous acquisition infrared train operation fault detection system and detection method Download PDFInfo
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- CN109436039B CN109436039B CN201811223100.5A CN201811223100A CN109436039B CN 109436039 B CN109436039 B CN 109436039B CN 201811223100 A CN201811223100 A CN 201811223100A CN 109436039 B CN109436039 B CN 109436039B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/50—Trackside diagnosis or maintenance, e.g. software upgrades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/50—Trackside diagnosis or maintenance, e.g. software upgrades
- B61L27/57—Trackside diagnosis or maintenance, e.g. software upgrades for vehicles or vehicle trains, e.g. trackside supervision of train conditions
Abstract
The invention discloses a digital multi-probe ectopic synchronous acquisition infrared train operation fault detection system and a detection method, and belongs to the field of railway safety monitoring. The system comprises equipment in a detection station machine room and detection station rail side equipment, wherein the equipment in the detection station machine room comprises a detection station host, a control box and an indoor wheel sensor signal processing device, and the detection station rail side equipment comprises 4 wheel sensors, a digital infrared probe box and a rail side digital wheel signal processing device. The 1# wheel sensor transmits a vehicle passing signal to the indoor wheel sensor signal processing device, the signal is transmitted to the detection station host through the control box, the detection station host feeds back the signal and transmits the signal to each digital infrared probe and each wheel sensor, the vehicle passing signal is acquired, the temperature is calculated according to a temperature measurement algorithm, whether the vehicle passing has a fault or not is judged, and after the fault is detected, an acquisition ending triggering signal is transmitted to each component. The invention avoids the problems of interference and attenuation, reduces the construction difficulty and realizes more accurate detection.
Description
Technical Field
The invention belongs to the field of railway safety monitoring, and particularly relates to a digital multi-probe ectopic synchronous acquisition infrared train operation fault detection system and a detection method.
Background
The device is used for monitoring the running state of the device and early warning faults by detecting the abnormal change of the local or overall temperature of the device, and is a common nondestructive inspection means. When the train condition of many mechanical parts of rail train normally operates, the temperature change usually keeps in the same interval or fixed change law, when the train part temperature change is different from the normality, usually means that the locomotive breaks down.
The system (THDS) for intelligently detecting the axle temperature of the vehicle utilizes a non-contact infrared radiation temperature measuring device arranged on the edge of a rail to detect the temperature of a train bearing in a running state in real time, can effectively and timely eliminate the hidden trouble of the vehicle bearing, is applied in the field of comprehensive rail transit in China for many years, and becomes an important ring of a railway running safety guarantee system in China.
The current THDS belongs to a simulation system, and all information transmission between detection station rail side equipment and detection station machine room equipment adopts simulation signals. Due to the complex electromagnetic environment at the rail edge, the analog signal is easy to interfere, and the signal-to-noise ratio of the analog signal is attenuated after the analog signal is transmitted for a long distance. And the simulation system is adopted, so that cable resources are wasted, the construction difficulty is increased, and the reliability of the system is reduced.
Because the detection target (rail train) has high running speed and extremely short detection distance, the change frequency of the effective detection signal is high, the duration is short, the digitization of the infrared detector is realized only at the probe end, the signal synchronization between the probe and the wheel sensor and between the probes at different places cannot be realized, the specific positioning of the detected fault in the train cannot be judged, and the integrity of the information acquired by a single probe cannot be judged.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a digital multi-probe ectopic synchronous acquisition infrared train operation fault detection system and a detection method, which can realize accurate synchronization of signals between a probe and a wheel sensor and between a plurality of different probes by completely adopting digital signal communication between infrared detection system rail side equipment and detection station machine room equipment.
The digital multi-probe remote synchronous acquisition infrared train operation fault detection system comprises equipment in a machine room of a detection station and rail-side equipment of the detection station.
The equipment in the detection station machine room comprises a detection station host, a power box, a control box and an indoor wheel sensor signal processing device, wherein the detection station host, the power box, the control box and the indoor wheel sensor signal processing device are arranged in the machine cabinet.
One end of the control box is connected with the detection station host, and the other end of the control box is connected with the indoor wheel sensor signal processing device; and the indoor wheel sensor signal processing device is simultaneously connected with the rail side equipment of the detection station.
The rail side detection device comprises 4 wheel sensors which are sequentially arranged along the running direction of the train, a plurality of digital infrared probe boxes which are arranged on two sides and in the middle of two rails, and a rail side digital wheel signal processing device.
The wheel sensors are respectively a 1# wheel sensor, a 2# wheel sensor, a 3# wheel sensor and a 4# wheel sensor, all the wheel sensors are distributed on the inner side of the same iron rail, wherein the 1# wheel sensor transmits the acquired train information to the indoor wheel sensor signal processing device; the 2# wheel sensor, the 3# wheel sensor and the 4# wheel sensor are simultaneously connected with a rail-side digital wheel signal processing device, the device is connected with a detection station host machine for signal intercommunication, and simultaneously can receive signals of a control box.
The digital infrared probe boxes are perpendicular to the directions of the two rails, all the probe boxes are positioned on the same straight line, one probe box is arranged on the outer side of each rail, and the rest probe boxes are distributed between the two rails at equal intervals; each probe box is fixedly provided with a digital infrared probe and a control box, and the control box is connected with the digital infrared probe; each digital infrared probe is respectively connected with the control box and the detection station host.
When a train passes by, the 1# wheel sensor starts to acquire train passing signals, the train passing signals are transmitted to the indoor wheel sensor signal processing device and reach the detection station host through the control box, and the detection station host sends a multi-channel synchronous acquisition starting trigger command to the control box and each digital infrared probe.
The control box transmits the command to the rail-side digital wheel signal processing device, the 2# wheel sensor, the 3# wheel sensor and the 4# wheel sensor start to acquire the vehicle passing information without time delay, perform digital conversion, package the vehicle passing information and transmit the vehicle passing information to the rail-side digital wheel signal processing device, and the vehicle passing information is uploaded to the detection station host based on a TCP/UDP protocol.
And after receiving the acquisition trigger command of the detection station host, each digital infrared probe immediately starts data acquisition, performs AD conversion, packages the data and uploads the data to the detection station host.
The invention provides a detection method of a digital multi-probe ectopic synchronous acquisition infrared train operation fault detection system, which comprises the following specific steps:
step one, when a train passes through, the 1# wheel sensor transmits a train passing signal to an indoor wheel sensor signal processing device;
the indoor wheel sensor signal processing device filters and conditions the vehicle passing signal to obtain a processed vehicle passing signal;
secondly, the processed vehicle passing signals are transmitted to a host of a detection station through a control box to obtain acquisition trigger signals which are transmitted to each digital infrared probe and a rail-side digital wheel signal processing device;
the method specifically comprises the following steps: the processed vehicle passing signals are transmitted to an IO card of a host of the detection station, and the IO card sends synchronous and real-time acquisition trigger signals to each digital infrared probe and the rail-side digital wheel signal processing device in real time by using interrupt hardware.
And step three, synchronously starting to process data by the digital infrared probe and the rail-side digital wheel signal processing device without time delay, and finally uploading the data to the detection station host.
Firstly, taking the time of a trigger signal as 0 time, circularly timing, and inserting a timestamp into a data frame; the digital infrared probe, the 2# wheel sensor, the 3# wheel sensor and the 4# wheel sensor acquire data with initial time synchronization and time stamps, and custom protocol data based on a TCP/UDP protocol are uploaded to the detection station host.
Meanwhile, the digital infrared probe is operated in hard real time, and a gate, a baffle and the like are controlled to be opened through the control box.
After receiving the acquired data, the host of the detection station analyzes all the data, calculates the temperature according to a temperature measurement algorithm, judges whether the temperature is greater than an alarm threshold value or not, and if so, alarms in real time as a fault and uploads the fault to a center; otherwise, the alarm is not given, and the vehicle data is stored and uploaded to the center.
The temperature calculation formula is as follows: t isC＝(U0×10-25)+kα；
TcAs temperature value of the detected object, U0For the voltage data received from the digital infrared probe, k is a relatively fixed parameter, related to the current equipment condition, and α is a value converted according to the environmental condition.
And step five, the host of the detection station sends an acquisition ending trigger signal to each component after judging that the vehicle passing is ended according to the information acquired by the rail side wheel sensors.
The method specifically comprises the following steps: and the 1# wheel sensor calculates that no signal exists after t is 100/V according to the average speed V and the 100-meter running distance of the vehicle, the vehicle passing is judged to be finished, and at the moment, the detection station host sends hardware synchronous acquisition finishing trigger signals to the digital infrared probes, the 2# wheel sensor, the 3# wheel sensor and the 4# wheel sensor through an IO card.
And step six, each digital infrared probe sends a closing command to the control box, the state of the probe, the state of the baffle and the state of the gate are fed back to the detection station host, and the detection station host confirms the information after receiving the information. And when the vehicle passing is finished, the system enters a vehicle waiting state again.
The invention has the advantages and beneficial effects that:
1) the utility model provides a digital many probes dystopy synchronous acquisition infrared ray train operation fault detection system, can effectively avoid the interference and the decay problem that former analog system arouses in signal transmission.
2) The utility model provides a many probes of digit type dystopy synchronous acquisition infrared ray train operation fault detection system, can realize simple and easy control and signal transmission, reduce cable laying, reduce the construction degree of difficulty.
3) The digital multi-probe ectopic synchronous acquisition infrared train operation fault detection method can more accurately synchronize the data of each probe and the data of the wheel sensor, and more accurate detection is realized.
Drawings
FIG. 1 is a schematic diagram of a digital multi-probe ectopic synchronous acquisition infrared train operation fault detection system according to the present invention;
FIG. 2 is a flow chart of the digital multi-probe allopatric synchronous acquisition implementation method of the infrared train operation fault detection system of the present invention.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings.
The invention discloses a digital multi-probe ectopic synchronous acquisition infrared train operation fault detection system, which comprises equipment in a machine room of a detection station and equipment on the rail side of the detection station, as shown in figure 1.
The equipment in the detection station machine room mainly comprises a detection station host F1, a power box F4, a control box F2, a vehicle number antenna, an indoor wheel sensor signal processing device F3 and lightning protection equipment which are arranged in a cabinet.
The power supply box F4 provides electric quantity for equipment in the machine room of the detection station and equipment on the rail side of the detection station; one end of the control box F2 is connected with a detection station host F1, and the other end is connected with an indoor wheel sensor signal processing device F3; the indoor wheel sensor signal processing device F3 is simultaneously connected with the rail side equipment of the detection station.
The rail side equipment of the detection station comprises a wheel sensor, a digital infrared probe T, a probe box X, a rail side digital wheel signal processing device G1, a rail clamping device and the like.
The wheel sensors are respectively a 1# wheel sensor, a 2# wheel sensor, a 3# wheel sensor and a 4# wheel sensor, all the wheel sensors are distributed on the inner side of the same iron rail, the 1# sensor is generally installed at a distance of more than 80 meters away from a probe box, the 2# and 3# wheel sensors are installed at positions of plus and minus 250mm of the probe box, and the 4# sensor is installed behind the 3# sensor, wherein the specific position is determined according to field conditions. The 1# wheel sensor transmits the acquired train information to an indoor wheel sensor signal processing device F3 through an armored cable; the latter converts the TTL signal into a standard and stable TTL signal, inputs the TTL signal into the control box F2, and outputs the TTL signal to the digital IO card of the probe station host F1 after being processed by the control box F2. The detector host is provided with a digital IO card and has the capacity of outputting multi-path synchronous digital control signals based on hardware. Meanwhile, a plurality of network cards are configured, the data uploaded by the rail-side digital probe and the rail-side digital signal processing device G1 based on the network cable can be received at the same time, and parameters can be configured and control instructions can be issued to the rail-side digital probe and the rail-side digital wheel signal processing device G1 based on a TCP/UDP protocol through the network cable.
The intelligent processing device of the rail-side digital wheel sensor is connected with the 2# wheel sensor, the 3# wheel sensor and the 4# wheel sensor, is connected with the control box F2 through cables and is connected with the detection station host machine F1 through network cables; the outdoor rail-side digital wheel signal processing device G1 maintains normal working physical environment, such as vibration, temperature, humidity and the like, for 2#, 3#, and 4# wheel sensors. According to actual working conditions on site, the rail-side digital wheel signal processing device G1 can be installed by clamping rails, can also be fixed on two sides of a railway track, and can also be installed between two rails and two sleepers in a bottom box mode. The rail side digital wheel signal processing device G1 digitizes signals of 2#, 3#, and 4# wheel sensors, and uploads the signals to the probe station host F1 based on a TCP/UDP protocol. The whole operation of the rail-side digital wheel signal processing device G1 is real-time operation based on hardware, the time is high in real time, and the time delay is little, so that the rail-side digital wheel signal processing device is accurate and controllable;
the digital infrared probe boxes X are perpendicular to the directions of the two rails, all the probe boxes X are positioned on the same straight line, one probe box is arranged on the outer side of each rail, and the rest probe boxes X are distributed between the two rails at equal intervals; each probe box X is used for fixing a digital infrared probe T and providing a physical environment for damping and maintaining normal work of the probe, and the probe box X is provided with a gate, a baffle and a hot target and provides hot target calibration for accurate temperature measurement of the digital infrared probe T. And each probe box X is also internally provided with a control box which is respectively connected with the power supply box F4, the digital infrared probe T and other equipment in the probe box. The control box is introduced into a power supply of a power supply box and then supplies power to a gate, a hot target, a baffle and a blowing snow removal device in the probe box after filtering, voltage stabilization and voltage conversion; meanwhile, the control box is connected with the digital infrared probe T, receives a control command sent by the infrared probe and controls the action of a gate, a hot target, a baffle and a blowing snow removal device; and moreover, analog signals such as the gate state, the temperature of the hot target, the temperature of the baffle plate and the like are simply processed by the control box and then uploaded to the digital infrared probe for digital processing.
The digital infrared probe T is designed based on FPGA, preferably EP4C series of ALTERA, and the used infrared detector adopts various forms such as unit/multi-element/line array and the like, and is of photon type or heat-sensitive type. Trigger signals sent by the indoor detection station host F1 and the control box F2 are received through cables and are communicated with the detection station host F1 through network cables. The detector host F1 can modify the parameters of the probe through the network cable; receiving data such as infrared detector signals, shell temperature signals, target temperature, baffle temperature, gate state and the like collected by the digital infrared probe, and sending a plurality of control commands to the probe through a network cable; the above operation processes are all hardware real-time operations. The packing processing of the infrared probe to the data comprises the following steps: inserting a message header, checking and inserting a timestamp. The inserted time stamp starts to accumulate cycle timing from triggering, and uploads the acquired data time and data.
The rail clamping device is mainly used for fixedly mounting a probe box X and a rail edge digital wheel signal processing device G1.
When a train passes by, the 1# wheel sensor starts to acquire train passing signals, the train passing signals are transmitted to the indoor wheel sensor signal processing device and reach the IO card of the detection station host through the control box, the detection station host interrupts hard real-time operation by using PCI, and immediately sends a multi-channel synchronous acquisition starting triggering command to the rail-side digital probe and the rail-side digital wheel signal processing device G1.
The control box transmits a command to the rail-side digital wheel signal processing device G1, the 2# wheel sensor, the 3# wheel sensor and the 4# wheel sensor to start non-delay vehicle passing information acquisition, the rail-side digital wheel sensor intelligent processing device filters and judges signals of the 2# wheel sensor, the 3# wheel sensor and the 4# wheel sensor, performs digital conversion and signal processing, packages the signals and transmits the signals to the rail-side digital wheel signal processing device, and the signals are uploaded to the detection station host based on a TCP/UDP protocol.
After receiving a collection trigger command of the detection station host, each digital infrared probe immediately starts data collection, performs AD conversion, packages the data and uploads the data to the detection station host through a network cable.
An implementation method of a digital multi-probe ectopic synchronous acquisition infrared train operation fault detection system is shown in fig. 2, and comprises the following specific steps:
step one, when a train passes through, the 1# wheel sensor transmits a train passing signal to an indoor wheel sensor signal processing device;
when the system is in a waiting state for passing, when a train passes, the 1# wheel sensor transmits a train passing signal to an indoor wheel sensor signal processing device in a machine room of a detection station, and the indoor wheel sensor signal processing device filters and conditions the train passing signal to obtain a processed train passing signal; the processed vehicle passing signals are transmitted to an IO card of a host of the detection station, and the IO card sends out multi-path synchronous acquisition trigger signals in real time by using interrupt hardware.
Secondly, the processed vehicle passing signals are transmitted to a host of a detection station through a control box to obtain acquisition trigger signals which are transmitted to each digital infrared probe and a rail-side digital wheel signal processing device;
the method specifically comprises the following steps: the processed train passing signals are transmitted to a detection station host, the detection station host processes train initial train passing signals in real time by using interrupt hardware, and simultaneously, a hardware IO board card of the detection station host sends synchronous and real-time acquisition starting trigger signals to each digital infrared probe and a rail-side digital wheel signal processing device.
And step three, synchronously starting to process data by the digital infrared probe and the rail-side digital wheel signal processing device without time delay, and finally uploading the data to the detection station host.
After a trigger signal is collected and started, a control box is placed in a probe box to control a gate, a baffle and the like to be opened immediately by adopting hard real-time operation, and simultaneously, data collection, AD conversion and data packing processing are synchronously started by each probe and the rail-side digital wheel signal processing device without time delay, so that the time of the trigger signal is 0 moment, the time is circularly timed, a timestamp is inserted into a data frame, and the time difference caused by the length of a cable between the rail-side probe and the rail-side digital wheel signal processing device is negligible. The infrared probe and the rail-side digital wheel signal processing device acquire data with initial time synchronization and time stamps, and the data are uploaded to a machine room host of the detection station through network cables based on self-defined protocol data of a tcp or udp protocol.
After receiving the acquired data, the host of the detection station analyzes all the data, calculates the temperature according to a temperature measurement algorithm, judges whether the temperature is greater than an alarm threshold value or not, and if so, alarms in real time as a fault and uploads the fault to a center; otherwise, the alarm is not given, and the vehicle data is stored and uploaded to the center.
The temperature calculation formula is as follows: t isC＝(U0×10-25)+kα；
TcAs temperature value of the detected object, U0For the voltage data received from the digital infrared probe, k is a relatively fixed parameter, related to the current equipment condition, and α is a value converted according to the environmental condition.
And step five, the host of the detection station sends an acquisition ending trigger signal to each component after judging that the vehicle passing is ended according to the information acquired by the rail side wheel sensors.
The method specifically comprises the following steps: and the 1# wheel sensor calculates that no signal exists after t is 100/V according to the average speed V and the 100-meter running distance of the vehicle, the vehicle passing is judged to be finished, and at the moment, the detection station host sends hardware synchronous acquisition finishing trigger signals to the digital infrared probes, the 2# wheel sensor, the 3# wheel sensor and the 4# wheel sensor through an IO card.
And step six, each digital infrared probe sends a closing command to the control box, the state of the probe, the state of the baffle and the state of the gate are fed back to the detection station host, and the detection station host confirms the information after receiving the information. And when the vehicle passing is finished, the system enters a vehicle waiting state again.
After the acquisition finishing trigger command sent by the detection station host, each digital infrared probe and each rail-side digital wheel signal processing device finish acquisition in a hard real-time synchronous manner, the probe sends commands of closing a gate, a baffle and the like to a control box, then the state of the probe, the status of the baffle and the status of the gate are fed back and sent to the detection station host, and the detection station host confirms the information after receiving the information. And when the vehicle passing is finished, the system enters a vehicle waiting state again.
Claims (5)
1. A digital multi-probe ectopic synchronous acquisition infrared train operation fault detection system is characterized by comprising equipment in a machine room of a detection station and rail-side equipment of the detection station;
the equipment in the detection station machine room comprises a detection station host, a power box, a control box and an indoor wheel sensor signal processing device, wherein the detection station host, the power box, the control box and the indoor wheel sensor signal processing device are arranged in the machine cabinet;
one end of the control box is connected with the detection station host, and the other end of the control box is connected with the indoor wheel sensor signal processing device; the indoor wheel sensor signal processing device is simultaneously connected with the rail side equipment of the detection station;
the rail side detection device comprises 4 wheel sensors which are sequentially arranged along the running direction of the train, a plurality of digital infrared probe boxes which are arranged at the two sides and the middle of the two rails, and a rail side digital wheel signal processing device;
the wheel sensors are respectively a 1# wheel sensor, a 2# wheel sensor, a 3# wheel sensor and a 4# wheel sensor, and all the wheel sensors are distributed on the inner side of the same iron rail;
the 1# wheel sensor transmits the acquired train information to an indoor wheel sensor signal processing device; the 2# wheel sensor, the 3# wheel sensor and the 4# wheel sensor are simultaneously connected with a rail side digital wheel signal processing device, and the device is connected with a detection station host machine for signal intercommunication and can receive signals of a control box;
the digital infrared probe boxes are perpendicular to the directions of the two rails, all the probe boxes are positioned on the same straight line, one probe box is arranged on the outer side of each rail, and the rest probe boxes are distributed between the two rails at equal intervals; each probe box is fixedly provided with a digital infrared probe and a control box, and the control box is connected with the digital infrared probe; each digital infrared probe is respectively connected with the control box and the detection station host;
when a train passes by, the 1# wheel sensor starts to acquire train passing signals, the train passing signals are transmitted to the indoor wheel sensor signal processing device and reach the detection station host through the control box, and the detection station host sends a multi-path synchronous acquisition starting trigger command to the control box and each digital infrared probe;
the control box transmits the command to the rail-side digital wheel signal processing device, and the 2# wheel sensor, the 3# wheel sensor and the 4# wheel sensor start to acquire the vehicle passing information without time delay, perform digital conversion, package the vehicle passing information and transmit the vehicle passing information to the rail-side digital wheel signal processing device, and upload the vehicle passing information to the detection station host based on a TCP/UDP protocol;
and after receiving the acquisition trigger command of the detection station host, each digital infrared probe immediately starts data acquisition, performs AD conversion, packages the data and uploads the data to the detection station host.
2. The train operation fault detection method of the digital multi-probe ectopic synchronous acquisition infrared train operation fault detection system based on claim 1 is characterized by comprising the following specific steps of:
step one, when a train passes through, the 1# wheel sensor transmits a train passing signal to an indoor wheel sensor signal processing device;
secondly, the processed vehicle passing signals are transmitted to a host of a detection station through a control box to obtain acquisition trigger signals which are transmitted to each digital infrared probe and a rail-side digital wheel signal processing device;
step three, the digital infrared probe and the rail-side digital wheel signal processing device synchronously start to process data without time delay, and finally upload the data to the detection station host;
firstly, taking the time of a trigger signal as 0 time, circularly timing, and inserting a timestamp into a data frame; the digital infrared probe, the 2# wheel sensor, the 3# wheel sensor and the 4# wheel sensor are used for acquiring data with initial time synchronization and time stamps and uploading the data to the detection station host machine based on a self-defined protocol of a TCP/UDP protocol;
meanwhile, the digital infrared probe is operated in hard real time, and the gate and the baffle are controlled to be opened through the control box;
after receiving the acquired data, the host of the detection station analyzes all the data, calculates the temperature according to a temperature measurement algorithm, judges whether the temperature is greater than an alarm threshold value or not, and if so, alarms in real time as a fault and uploads the fault to a center; otherwise, the alarm is not given, and the vehicle passing data is stored and uploaded to the center;
the temperature calculation formula is as follows: t isC=（U0×10-25）+kα；
TcAs temperature value of the detected object, U0The voltage data received from the digital infrared probe is represented by k which is a relatively fixed parameter and related to the current equipment condition, and alpha is a numerical value converted according to the environmental condition;
step five, the host of the detection station judges that the vehicle passing is finished according to the information acquired by the rail side wheel sensor and then sends an acquisition finishing trigger signal to each component;
step six, each digital infrared probe sends a closing command to the control box, and feeds back the state of the probe, the state of the baffle and the state of the gate to the detection station host, and the detection station host confirms the information after receiving the information; and when the vehicle passing is finished, the system enters a vehicle waiting state again.
3. The method for detecting train operation failure according to claim 2, wherein the indoor wheel sensor signal processing device in the first step filters and conditions the train passing signal to obtain a processed train passing signal.
4. The train operation fault detection method according to claim 2, wherein the second step is specifically: the processed vehicle passing signals are transmitted to an IO card of a host of the detection station, and the IO card sends synchronous and real-time acquisition trigger signals to each digital infrared probe and the rail-side digital wheel signal processing device in real time by using interrupt hardware.
5. The train operation fault detection method according to claim 2, wherein the fifth step is specifically: and the 1# wheel sensor calculates that no signal exists after t =100/V according to the average speed V and the 100-meter running distance of the passing vehicle, the passing vehicle is judged to be finished, and at the moment, the detection station host sends hardware synchronous acquisition finishing trigger signals to the digital infrared probes, the 2# wheel sensor, the 3# wheel sensor and the 4# wheel sensor through the IO card.
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