Rail limit invasion monitoring system

Abstract

The utility model provides a track limit invasion monitoring system which comprises a plurality of monitoring points arranged along a track at intervals, each monitoring point comprises a visible light camera, an infrared camera, an ultrasonic module, an environmental parameter sensing module and a control module, and the signal output end of an environmental parameter sensor is connected with the signal input end of the control module; the visible light camera, the infrared camera and the ultrasonic module are electrically connected with the control module, and the control module controls the visible light camera, the infrared camera and the ultrasonic module to start or stop working according to the environmental parameter information; the system further comprises a dispatching center, the visible light camera, the infrared camera and the ultrasonic module send collected information to the control module, the control module receives the information and sends the information to the dispatching center, and the dispatching center judges whether the track is out of limit according to the information collected by the visible light camera, the infrared camera and the ultrasonic module. The device is especially suitable for regions with deficient electric energy and regions with changeable weather.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail safety technical field, concretely relates to a rail encroachment monitoring system. BACKGROUND

[0002] At present, as an important part of modern urban life, the rail transit system bears huge passenger flow and transportation tasks, and its safety and efficiency are directly related to the smooth traffic operation and the convenience of residents' travel. The detection of encroachment obstacles on the rail is an important link to ensure the safety of train operation and reduce the risk of accidents. These technologies, such as radar detection, laser scanning, infrared sensing, etc., monitor the obstacles on the rail in real time, provide early warning information for rail operation, and effectively avoid collision accidents.

[0003] However, in some remote areas, there is a lack of electricity, and it is easy to have insufficient power supply, which leads to the fact that the detection equipment cannot get the energy support needed for normal work; and in some areas with variable weather, especially in severe weather or extreme environment, the accuracy of the signal detected by the detection equipment will be seriously affected. The above situations are all challenges to the performance of the detection equipment. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the defects existing in the prior art, the purpose of the utility model is to provide a rail encroachment monitoring system, which is particularly suitable for areas with insufficient electricity and areas with variable weather.

[0005] In order to achieve the above purpose of the utility model, the utility model provides a rail encroachment monitoring system, which comprises: a plurality of monitoring points arranged at intervals along the rail, the monitoring points comprising:

[0006] A visible light camera is used to collect image information of the rail area;

[0007] An infrared camera is used to collect image information of the rail area;

[0008] An ultrasonic module is used to detect whether there is an obstacle in the rail area;

[0009] An environmental parameter sensing module is used to collect environmental parameter information;

[0010] A control module is connected to the signal input end of the control module through the signal output end of the environmental parameter sensing module, and sends the collected environmental parameter information to the control module; the visible light camera, the infrared camera and the ultrasonic module are electrically connected to the control module, and the control module controls the visible light camera, the infrared camera and the ultrasonic module to start or stop working according to the environmental parameter information;

[0011] Further comprising a dispatch center, in communication connection with the control module, and mutual communication, the visible light camera, infrared camera, ultrasonic wave module will send the collected information to the control module, the control module receives the information and sends to the dispatch center.

[0012] The track intrusion monitoring system can control whether the visible light camera, infrared camera and ultrasonic wave module work according to the environmental parameter information collected by the environmental parameter sensing module, avoiding all-weather work of the visible light camera, infrared camera and ultrasonic wave module, saving electric energy, on the other hand, the corresponding module can be selected according to the specific environmental parameter to monitor, improving the accuracy of monitoring, on the other hand, whether the track exists intrusion is judged by the dispatch center, avoiding a large number of operations of each monitoring point, reducing the power consumption of each monitoring point.

[0013] Optionally, the environmental parameter sensing module includes a light sensor, a signal output end of the light sensor is connected to a corresponding signal input end of the control module, and the control module controls the visible light camera and infrared camera to work alternately according to the light intensity signal collected by the light sensor.

[0014] In this optional scheme, the light intensity signal in the environment is collected according to the light sensor, when the light intensity is insufficient, the infrared camera is used for image acquisition of the track area, when the light intensity is sufficient, the visible light camera is used for image acquisition of the track area, which not only copes with the day and night, but also can deal with the case of light intensity mutation caused by extreme weather.

[0015] Optionally, the visible light camera and infrared camera are integrated visible light / infrared dual-mode cameras. This optional scheme makes the integration of the track intrusion monitoring system higher.

[0016] Optionally, the visible light / infrared dual-mode camera includes a camera body and an IR-Cut dual-filter switcher, the IR-Cut dual-filter switcher is arranged behind the lens of the camera body; the IR-Cut dual-filter switcher is in control connection with the control module, and the control module controls the IR-Cut dual-filter switcher to switch between the infrared cut-off filter and the full-transparency filter according to the environmental parameter information.

[0017] Optionally, it further includes an infrared light supplementing module in control connection with the control module, when the infrared camera works, the control module controls the infrared light supplementing module to work. This optional scheme provides infrared light for the infrared camera, and since infrared light is invisible light, it will not interfere with the driver's line of sight.

[0018] Optionally, an infrared light supplement module connected with the control module is further included, and the infrared light supplement module is controlled to work when the control module controls the IR-Cut double filter switcher to switch to the full-transmission filter.

[0019] Optionally, when the light intensity signal collected by the light sensor exceeds a preset highest light intensity threshold value, the control module controls the visible light camera and the infrared camera to suspend work and controls the ultrasonic wave module to work.

[0020] Optionally, the environmental parameter sensing module includes a rain intensity sensor for collecting rain intensity in the environment and / or a fog concentration sensor for collecting fog concentration in the environment, and signal output ends of the rain intensity sensor and the fog concentration sensor are respectively connected to corresponding signal input ends of the control module, and when the rain intensity signal and / or the fog concentration signal exceeds a corresponding preset value, the control module controls the ultrasonic wave module to suspend work and controls the infrared camera to work.

[0021] In extreme weather such as heavy rain and thick fog, the collection accuracy of the ultrasonic wave module will be greatly affected, and the optional scheme can cope with extreme weather such as heavy rain and thick fog, and the infrared camera is used for monitoring.

[0022] Optionally, an alarm module electrically connected with the dispatching center is further included, and the dispatching center controls the alarm module to alarm when the track exists intrusion.

[0023] Optionally, the ultrasonic wave module is an ultrasonic wave array, forming a fan-shaped detection area covering the track center line ±10-20°. The optional scheme can better cover the track monitoring area.

[0024] The additional aspects and advantages of the present application will be partially given in the following description, some will become apparent from the following description, or will be understood by those skilled in the art through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent from the following description in conjunction with the accompanying drawings, in which:

[0026] Figure 1 is a schematic diagram of the principle of the embodiment. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described below in detail, examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used to explain the present application, and should not be understood as a limitation of the present application.

[0028] In the description of the present application, unless otherwise specified and limited, it is necessary to explain that the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be mechanical connection or electrical connection, it can be the communication inside two elements, it can be directly connected, or indirectly connected through intermediate medium, for ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] As shown in Figure 1 The present application provides a track intrusion monitoring system, especially suitable for severe weather and / or energy shortage. Specifically, the track intrusion monitoring system comprises a plurality of monitoring points arranged at intervals along the track, and further comprises a dispatch center. The interval between the monitoring points can be the same or different, for example, the monitoring points can be arranged at equal distances along the relatively straight track, and the setting of the monitoring points can be adaptively increased in the area with more curved areas or blind areas.

[0030] The monitoring points in the embodiment comprise a visible light camera, an infrared camera, an ultrasonic module, an environmental parameter sensing module and a control module. The visible light camera is used to collect image information of the track area; the infrared camera is used to collect image information of the track area; the ultrasonic module is used to detect whether there is an obstacle in the track area, and can also be used to detect train position information; the environmental parameter sensing module is used to collect environmental parameter information. The signal output end of the environmental parameter sensing module is connected to the signal input end of the control module, and sends the collected environmental parameter information to the control module; the visible light camera, the infrared camera and the ultrasonic module are electrically connected with the control module, and the control module controls the visible light camera, the infrared camera and the ultrasonic module to start or stop working according to the environmental parameter information. Here, the control module controls the visible light camera, the infrared camera and the ultrasonic module to start or stop working by what kind of way belongs to the prior art, which is not the focus of the present application, and the prior art can be used, for example, the PWM signal or the trigger signal can be output to the emission end of the ultrasonic module, and the trigger input end of the visible light camera and the infrared camera can be used to realize. The present application will make a simple schematic explanation of the circuit connection of the commonly used electrical components at the end of the text.

[0031] In this embodiment, the visible light camera, the infrared camera and the ultrasonic module can be arranged on the support when being arranged, a plurality of angle-adjustable mounting positions are arranged on each support, and the visible light camera, the infrared camera and the ultrasonic module are arranged on the corresponding mounting positions respectively. The angle of the mounting position is adjusted manually, so as to adjust the field of view or detection area of the visible light camera, the infrared camera and the ultrasonic module. In this embodiment, the ultrasonic module is preferably an ultrasonic array, the ultrasonic array is provided with at least five groups of MA40S4R / S ultrasonic probes, and a fan-shaped detection area covering the center line of the track ± 10-20° is formed, preferably ± 15°, and the five probes are distributed in a fan shape with an angle of -15°, -7.5°, 0°, +7.5° and +15°, and the detection distance is 0.2-5 m.

[0032] In this embodiment, the environmental parameter sensing module can be arranged together with the visible light camera, the infrared camera and the ultrasonic module, or can be separately arranged. The environmental parameter sensing module includes a light sensor, and can further include a rain intensity sensor for collecting the rain intensity in the environment and / or a fog concentration sensor for collecting the fog concentration in the environment. The signal output ends of the light sensor, the rain intensity sensor and the fog concentration sensor are connected to the corresponding signal input ends of the control module.

[0033] The light sensor collects the light intensity signal in the environment, and the control module controls the visible light camera and the infrared camera to work alternately according to the light intensity signal collected by the light sensor. When the light intensity signal collected by the light sensor is lower than a preset first light intensity threshold, the control module controls the visible light camera to suspend work and controls the infrared camera to work. For example, the control module outputs a PWM signal with a duty cycle of 0 or outputs a low-level signal to the trigger input end of the visible light camera to control the visible light camera to suspend work, and outputs a PWM signal with a duty cycle of 1 or outputs a high-level signal to the trigger input end of the infrared camera to control the infrared camera to work. At this time, the control module controls the infrared light supplement module connected thereto to work and provides infrared light supplement. Here, an existing infrared light supplement module can be used, such as an LED infrared light supplement lamp. The control module controls the LED infrared light supplement lamp to work by outputting a PWM signal with a duty cycle of 1 or outputting a high-level signal. When the light intensity signal collected by the light sensor is higher than the preset first light intensity threshold, the control module controls the visible light camera to work and controls the infrared camera to suspend work. The first light intensity threshold here is the light intensity that can support the visible light camera to obtain a clear image. How the control module judges whether the light intensity signal collected by the light sensor is lower than the first light intensity threshold can be implemented by using existing technologies, such as comparators or differential circuits.

[0034] In an alternative, the visible light camera and the infrared camera can be an integrated visible light / infrared dual-mode camera, such as a HDR-X3 1920x1080 resolution industrial camera which integrates wide dynamic (140dB) and near infrared (850nm) dual modes. The visible light / infrared dual-mode camera comprises a camera body and an IR-Cut dual filter switcher which is disposed behind the lens of the camera body. The camera body and the IR-Cut dual filter switcher are respectively controlled by a control module. The control module controls the IR-Cut dual filter switcher to switch between an infrared cut-off filter and a full-transmission filter according to the light intensity signal collected by the light sensor. That is, when the light intensity signal collected by the light sensor is lower than a preset first light intensity threshold, the control module controls the IR-Cut dual filter switcher to switch to the full-transmission filter, and at the same time, the control module controls the infrared light supplement module to work to provide infrared light supplement. When the light intensity signal collected by the light sensor is higher than the preset first light intensity threshold, the control module controls the IR-Cut dual filter switcher to switch to the infrared cut-off filter. When the control module controls the IR-Cut dual filter switcher to switch between the full-transmission filter and the infrared cut-off filter, the switching can be controlled by outputting high and low levels to the IR-Cut dual filter switcher, for example, outputting a high level to the IR-Cut dual filter switcher to control the IR-Cut dual filter switcher to switch to the full-transmission filter, and outputting a low level to the IR-Cut dual filter switcher to control the IR-Cut dual filter switcher to switch to the infrared cut-off filter. In some commercially available visible light / infrared dual-mode cameras, the visible light camera, the infrared camera, and the IR-Cut dual filter switcher are integrated in the camera itself, so the IR-Cut dual filter switcher can also be controlled by the control chip built in the visible light / infrared dual-mode camera, and when switching to the infrared camera mode, the IR-Cut dual filter switcher is switched to the full-transmission filter at the same time.

[0035] To cope with strong light interference, a highest light intensity threshold corresponding to strong light can also be preset. When the light intensity signal collected by the light sensor exceeds the preset highest light intensity threshold, the control module controls the visible light camera and the infrared camera to suspend work and controls the ultrasonic wave module to work. How the control module judges whether the light intensity signal collected by the light sensor is higher than the highest light intensity threshold can also be achieved by using existing technologies, which will not be described here. How the control module controls the ultrasonic wave module to work can be referred to the foregoing related content, including but not limited to the control of the visible light camera and the infrared camera, which will not be described here.

[0036] The rain intensity sensor and the fog concentration sensor are mainly aimed at the influence of rain and fog weather on the detection effect of the ultrasonic module. When the rain intensity signal collected by the rain intensity sensor exceeds the corresponding rain intensity preset value, the control module controls the ultrasonic module to suspend work, controls the infrared camera to work, or controls the visible light / infrared dual-mode camera to work in the infrared camera mode. When the fog concentration signal collected by the fog concentration sensor exceeds the corresponding fog concentration preset value, the control module controls the ultrasonic module to suspend work, controls the infrared camera to work, or controls the visible light / infrared dual-mode camera to work in the infrared camera mode. How the control module judges whether the rain intensity signal exceeds the corresponding rain intensity preset value and whether the fog concentration signal exceeds the corresponding fog concentration preset value can be realized by using existing technologies such as comparators or differential circuits, and details are not described here.

[0037] The dispatch center and the control module are in communication connection and communicate with each other. 5G communication can be used here, and details are not described here according to the existing technology. The visible light camera, the infrared camera (or the visible light / infrared dual-mode camera), and the ultrasonic module send the collected information to the control module, the control module receives the information and sends it to the dispatch center, and the dispatch center judges whether the track has an intrusion limit according to the information collected by the visible light camera, the infrared camera or the visible light / infrared dual-mode camera, and the ultrasonic module. The dispatch center judges whether the track has an intrusion limit using existing technologies, which is not the technical focus of this application, so details are not described here. When the track has an intrusion limit, the dispatch center controls the alarm module to alarm.

[0038] The dispatch center and each train are in communication connection. 5G communication can also be used here to send the track intrusion limit situation and / or alarm information of the track to be passed through to the corresponding train, and the vehicle-mounted early warning module on the train alarms according to the alarm information. The display module on the train can display the track intrusion limit situation sent by the dispatch center.

[0039] In specific implementation, the model of the light sensor can be selected but is not limited to BH1750FVI, the model of the rain intensity sensor can be selected but is not limited to Rain-O-Matic, and the model of the fog concentration sensor can be selected but is not limited to PWD52. The control module can be selected but is not limited to an STM32 series single-chip microcomputer, such as STM32F407VGT6. The specific circuit connection can refer to the following connection mode, and of course, if there are some details, the connection can be made according to the chip manual and existing technologies.

[0040] The VCC pin of the light sensor BH1750FVI is connected with the 3.3V pin of the single-chip microcomputer STM32F407VGT6, the grounding end is grounded, the SDA pin of the BH1750FVI is connected with the PB9 pin of the single-chip microcomputer STM32F407VGT6, the SCL pin of the BH1750FVI is connected with the PB8 pin of the single-chip microcomputer STM32F407VGT6. The rain intensity sensor Rain-O-Matic is connected with the single-chip microcomputer STM32F407VGT6 through an RS485 level conversion chip, in the embodiment, the RS485 level conversion chip with the model MAX3485 is adopted, wherein, the Rain-O-Matic interface type is RS485, the STM32 peripheral USART (configured as RS485 mode + DE control signal) + GPIO, the STM32F407VGT6 uses the USART1 (TX=PA9, RX=PA10), the RE and DE ends of the MAX3485 are controlled by the GPIO (PA8), the A and B lines of the Rain-O-Matic are connected with the A and B lines (the 6th and 7th pins) of the MAX3485, the differential signals are transmitted, and the VCC of the MAX3485 is connected with 3.3V. The connection between the fog concentration sensor PWD52 and the single-chip microcomputer STM32F407VGT6 is similar to the Rain-O-Matic, the PWD52 needs to be connected with the STM32F407VGT6 through an SDI-12 interface board supporting 3.3V / 5V logic, and the TTL side RX of the SDI-12 interface board is connected with the RX pin of the STM32F407VGT6 UART. The transmitting end MA40S4S of the ultrasonic probe is connected with a PWM output end (such as PA8) of the single-chip microcomputer STM32F407VGT6, and the receiving end MA40S4R of the ultrasonic probe is connected with an ADC pin of the STM32F407VGT6. The PC0 (GPIO_Output) of the single-chip microcomputer STM32F407VGT6 is connected with the trigger input end Trigger In of the visible light / infrared dual-mode camera HDR-X3 after being converted through an optical coupler, and the PC1 (GPIO_Input) of the STM32F407VGT6 is connected with the trigger output end Trigger Out of the visible light / infrared dual-mode camera HDR-X3 after being converted through an optical coupler.

[0041] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A rail gauge intrusion monitoring system, characterized in that, The application relates to a track monitoring system. The track monitoring system comprises: a plurality of monitoring points arranged at intervals along the track, wherein the monitoring points comprise: a visible light camera for collecting image information of a track area; an infrared camera for collecting image information of the track area; an ultrasonic module for detecting whether there is an obstacle in the track area; an environmental parameter sensing module for collecting environmental parameter information; the environmental parameter sensing module comprises a light sensor, and further comprises a rain intensity sensor for collecting rain intensity in the environment and / or a fog concentration sensor for collecting fog concentration in the environment; a control module, wherein a signal output end of the environmental parameter sensing module is connected to a signal input end of the control module, and the control module sends the collected environmental parameter information to the control module, specifically, a signal output end of the light sensor is connected to a corresponding signal input end of the control module, signal output ends of the rain intensity sensor and the fog concentration sensor are respectively connected to corresponding signal input ends of the control module; the visible light camera, the infrared camera and the ultrasonic module are electrically connected to the control module, and the control module controls the visible light camera, the infrared camera and the ultrasonic module to start or stop working according to the environmental parameter information, specifically, the control module controls the visible light camera and the infrared camera to work alternately according to a light intensity signal collected by the light sensor; when the light intensity signal collected by the light sensor exceeds a preset maximum light intensity threshold value, the control module controls the visible light camera and the infrared camera to suspend working and controls the ultrasonic module to work; when a rain intensity signal and / or a fog concentration signal exceeds a corresponding preset value, the control module controls the ultrasonic module to suspend working and controls the infrared camera to work.

2. The rail clearance monitoring system of claim 1, wherein, The track monitoring system further comprises a dispatch center which is in communication connection with the control module and communicates with each other, and the visible light camera, the infrared camera and the ultrasonic module send the collected information to the control module, and the control module receives the information and sends the information to the dispatch center.

3. The rail clearance monitoring system of claim 2, wherein, The visible light camera and the infrared camera are visible light / infrared dual-mode cameras integrated into one body.

4. The rail clearance monitoring system of claim 1, wherein, The visible light / infrared dual-mode camera comprises a camera body and an IR-Cut double-filter switcher, the IR-Cut double-filter switcher is arranged behind a lens of the camera body; the IR-Cut double-filter switcher is in control connection with the control module, and the control module controls the IR-Cut double-filter switcher to switch between an infrared cut-off filter and a full-transparency filter according to the environmental parameter information.

5. The rail clearance monitoring system of claim 3, wherein, The track monitoring system further comprises an infrared light supplementing module which is in control connection with the control module, and the control module controls the infrared light supplementing module to work when the infrared camera works.

6. The rail clearance monitoring system of claim 1, wherein, The track monitoring system further comprises an infrared light supplementing module which is in control connection with the control module, and the control module controls the infrared light supplementing module to work when the IR-Cut double-filter switcher is switched to the full-transparency filter. The track monitoring system further comprises:

7. The rail clearance monitoring system of claim 1, wherein, an alarm module which is in electrical connection with the dispatch center, and the dispatch center controls the alarm module to alarm when there is an intrusion in the track. The ultrasonic module is an ultrasonic array which forms a fan-shaped detection area covering a track center line plus-minus 10-20 degrees.

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