Wireless energy complementing system and energy complementing method for train sensor

Abstract

The invention discloses a wireless energy complementing system and an energy complementing method for a train sensor, and relates to the technical field of train sensors. The wireless energy complementing system is arranged outside the track and comprises a communication identification unit and an energy complementing unit; the communication identification unit comprises a positioning device and an information read-write device, the positioning device is used for acquiring the position of the sensor, and the information read-write device can be wirelessly connected to the wireless gateway and read the state information of the sensor; the energy complementing unit comprises a plurality of wireless charging devices, an energy receiving device is mounted on the outer side of each sensor, and the wireless charging devices are configured to be arranged in one-to-one correspondence with the plurality of sensors and supply energy to the sensors through the energy receiving devices; wherein the wireless charging device is a radio wave wireless charging device, and the energy receiving device is a radio wave energy receiving device. According to the invention, remote wireless energy supplementation of the railway wagon can be realized, and the limitation of battery power supply and vibration energy collection is reduced.

Description

Technical Field

[0001] The present invention relates to the field of train sensor technology, and in particular to a wireless energy replenishment system and energy replenishment method for a train sensor. Background Art

[0002] The state sensing technology of key components of trains, such as the temperature of axle boxes, gear boxes, motors, the pressure of the main air duct, the instability of bogies, etc., has been widely used in high-speed trains, EMUs, ordinary railway passenger cars, and locomotives. In recent years, relevant companies have begun to develop railway freight car state monitoring systems based on wireless Internet of Things technology, using wireless sensors to monitor state quantities such as axle temperature, air duct pressure, coupler stress, and door switches, and communicating with the on-board gateway through communication methods such as Lora and Bluetooth to achieve wireless communication of trains.

[0003] Railway freight cars are currently mainly driven by diesel locomotives. Unlike high-speed trains and subways that are driven by pantographs and power grids, railway freight cars themselves basically have no power supply system. Therefore, there is generally no direct power supply for status monitoring equipment on railway freight cars. The sensors are powered by batteries, but the battery life is limited, which has great restrictions on the service life of the sensors, the frequency of device wake-up and the signal transmission rate.

[0004] The Chinese invention patent with publication number CN111769759A discloses a self-powered railway freight car status monitoring system based on a vibration energy harvester, which proposes a self-powered railway freight car status monitoring system based on a vibration energy harvester to solve the current problem of energy supply for wireless transceiver modules and sensor modules of railway freight cars. In this solution, the energy replenishment module must be integrated inside the sensor, the energy source is unstable, the conversion efficiency is also low, and due to the principle limitation of the vibration energy harvesting device, only the vibration energy within a very narrow frequency band can be collected, and the output power is limited. Summary of the invention

[0005] The purpose of the present invention is to provide a wireless energy replenishment system and energy replenishment method for train sensors, which can realize remote wireless energy replenishment of railway freight cars and reduce the limitations of battery power supply and vibration energy collection.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: According to a first aspect of the present invention, a wireless energy replenishment system for train sensors is provided, wherein a wireless gateway is provided on the train, and the sensor is wirelessly connected to the wireless gateway; the wireless energy replenishment system is provided outside the track, and the wireless energy replenishment system includes a communication identification unit and an energy replenishment unit; The communication identification unit includes a positioning device and an information reading and writing device, wherein the positioning device is used to obtain the position of the sensor, and the information reading and writing device can be wirelessly connected to the wireless gateway and read the status information of the sensor; The energy replenishment unit includes multiple wireless charging devices, and an energy receiving device is installed on the outside of each sensor. The wireless charging device is configured to be set one-to-one with the multiple sensors and to supply energy to the sensors through the energy receiving device; wherein the wireless charging device is a radio wave wireless charging device, and the energy receiving device is a radio wave energy receiving device.

[0007] In this solution, in the wireless energy replenishment system, the sensor is wirelessly connected to the wireless gateway, thereby communicating with the wireless gateway and transmitting the detected data; the wireless energy replenishment system identifies the sensor through the communication identification unit. Specifically, the positioning device obtains the position of the sensor, and the information reading and writing device is wirelessly connected to the wireless gateway to obtain the status information of the sensor. Then, the wireless charging device can charge the sensor one by one according to the position of the sensor and the status information of the sensor, so that there is no need to set up a battery in the train, reducing the usage limitations caused by battery life and life and the space limitations of the power supply cable layout in the train, while ensuring the efficiency of energy replenishment and meeting the sensor energy replenishment needs of railway freight cars.

[0008] Furthermore, the positioning device includes a barcode scanning camera, a two-dimensional code is provided on the train, the two-dimensional code includes the installation location information of the sensor, and the barcode scanning camera can scan the two-dimensional code to read the installation location information.

[0009] In this solution, by scanning the QR code on the train with a barcode scanning camera, the installation location information of the sensor in the QR code can be quickly obtained, thereby facilitating the wireless charging device to quickly align the sensor for wireless charging and energy replenishment.

[0010] Furthermore, the QR code also includes configuration information of the sensor and number information of the train.

[0011] In this solution, when the barcode scanning camera scans the QR code, it can also obtain the sensor configuration information and the train number information, so that the system can record the energy replenishment information of each sensor of each train to avoid duplicate energy replenishment or missed energy replenishment of sensors.

[0012] Furthermore, one QR code is provided at each of the front and rear ends of the train carriage, and each of the QR codes contains the same installation location information.

[0013] In this solution, a QR code is set at the front and rear ends of the train car, so that no matter which direction the train enters the station from, the scanning camera of the positioning device can first scan the QR code to obtain the installation location information of the sensor, thereby facilitating the one-to-one correspondence between the wireless charging device and the sensor for energy replenishment.

[0014] Furthermore, two communication identification units are provided, and the two communication identification units are respectively arranged outside the opposite sides of the energy charging unit.

[0015] In this solution, two communication identification units are respectively arranged outside the energy charging unit on opposite sides, so that the communication identification unit can first obtain the sensor installation position information when the train enters the station.

[0016] Furthermore, the communication identification unit also includes a cleaning device, which is arranged on a side of the code scanning camera away from the energy charging unit, and is used to clean the QR code.

[0017] In this solution, a cleaning device is provided so that when a train enters a station, the train first passes through the cleaning device, and the cleaning device cleans the QR code to prevent the QR code from being blocked by dirt and affecting the scanning of the barcode camera.

[0018] Furthermore, the information reading and writing device includes a communication antenna, and the communication antenna is connected to the wireless gateway via lora or bluetooth protocol.

[0019] Furthermore, a color mark is provided on the sensor, and the color mark is used for the user to confirm and determine the position of the sensor.

[0020] In this solution, a color code is set on the sensor, and the user can easily identify the position of the sensor through the color code, which is convenient for recharging, detection and maintenance of the sensor.

[0021] Furthermore, energy is transmitted between the wireless charging device and the energy receiving device via millimeter waves.

[0022] In this solution, the sensors are fully powered by millimeter waves, which has mature technology and high power, and can meet the needs of wireless power supply for train sensors.

[0023] According to a second aspect of the present invention, a method for replenishing energy for a train sensor is provided. The method is based on the wireless replenishing system as described above, and the method comprises the following steps: S1, the communication identification unit identifies the sensor position; The positioning device includes a barcode scanning camera, and a two-dimensional code containing the installation location information of the sensor is provided on the train; the communication identification unit also includes a cleaning device, and the cleaning device cleans the two-dimensional code and then the barcode scanning camera scans the two-dimensional code to obtain the installation location information of the sensor; S2, the information reading and writing device is connected to the wireless gateway of the train to obtain the status information of the sensor; The status information of the sensor includes the sensor number, remaining power, last charging time, and sensor health status; S3. According to the status information of the sensor, a wireless charging device is assigned to provide one-to-one wireless energy charging to the sensor.

[0024] In this solution, when the wireless energy replenishment system is used for energy replenishment, the sensor installation location information on the train is first obtained by scanning the code with a code scanning camera, and the sensor number, remaining power, last charging time, sensor health status and other information are obtained through the information reading and writing device, so as to allocate wireless charging energy replenishment devices one by one to provide wireless energy replenishment for the sensors.

[0025] In summary, the present invention has the following beneficial effects: In the wireless energy replenishment system of the present invention, the wireless energy replenishment system identifies the sensor through the communication identification unit, the positioning device obtains the position of the sensor, and the information reading and writing device is wirelessly connected to the wireless gateway to obtain the status information of the sensor. Then, the wireless charging device can charge the sensor one by one according to the position of the sensor and the status information of the sensor, thereby eliminating the need to set up batteries in the train, reducing the usage limitations caused by battery life and life span and the space limitations of the power supply cable layout in the train, while ensuring the efficiency of energy replenishment charging and meeting the sensor energy replenishment needs of railway freight cars. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the main structure of a train according to an embodiment of the present invention.

[0027] Figure 2 It is a structural schematic diagram of a train and a wireless energy replenishment system according to an embodiment of the present invention.

[0028] Figure 3 It is a structural diagram of a wireless energy replenishment system according to an embodiment of the present invention.

[0029] Figure 4 It is a schematic diagram of an information reading and writing device according to an embodiment of the present invention.

[0030] In the figure: 1000, wireless energy replenishment system; 100, communication identification unit; 110, positioning device; 120, information reading and writing device; 130, cleaning device; 200, energy replenishment unit; 210, wireless charging device; 2000, train; 2100, main gateway; 2200, wireless gateway; 2300, sensor; 2400, QR code. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] This embodiment discloses a wireless energy replenishment system 1000 for train sensors. The wireless energy replenishment system 1000 for train sensors 2300 is used for wireless energy replenishment of the train 2000, especially for railway freight cars. Figure 1 The head car of the train 2000 is provided with a general gateway 2100, and the bottom of each car of the train 2000 is provided with a wireless gateway 2200 for relay. Each train 2000 is provided with multiple sensors 2300, and the sensors 2300 and the wireless gateway 2200 are connected to each other through Lora, Bluetooth and other communication methods, and the detected parameters are transmitted to the general gateway 2100 of the head car of the train 2000 through the relayed wireless gateway 2200. The head car of the train 2000 is provided with a display and a controller, and the display and the controller are connected to the general gateway 2100 for monitoring and processing the parameters detected by the sensor 2300.

[0033] Referring to the figure, the wireless energy replenishment system 1000 is arranged outside the track and is used to wirelessly recharge the sensor 2300 on the train 2000. Specifically, the wireless energy replenishment system 1000 includes a communication identification unit 100 and a recharge unit 200, the communication identification unit 100 is used to identify the information and installation location of the sensor 2300, and the recharge unit 200 is used to wirelessly charge and recharge the sensor 2300.

[0034] The communication identification unit 100 includes a positioning device 110 and an information reading and writing device 120. The positioning device 110 is used to obtain the position of the sensor 2300. The information reading and writing device 120 can be wirelessly connected to the wireless gateway 2200 and read the status information of the sensor 2300. The wireless energy replenishment system 1000 identifies the sensor 2300 through the communication identification unit 100.

[0035] The energy replenishment unit 200 includes a plurality of wireless charging devices 210, and an energy receiving device is installed on the outside of each sensor 2300. The wireless charging device 210 is configured to correspond to the plurality of sensors 2300 one by one and to supply energy to the sensors 2300 through the energy receiving device. The wireless charging device 210 is a radio wave wireless charging device 210, and the energy receiving device is a radio wave energy receiving device.

[0036] The positioning device 110 obtains the position of the sensor 2300, and the information reading and writing device 120 is wirelessly connected to the wireless gateway 2200 to obtain the status information of the sensor 2300. Then, the wireless charging device 210 can charge the sensor 2300 according to the position of the sensor 2300 and the status information of the sensor 2300. Therefore, there is no need to set up a battery in the train 2000, which reduces the usage limitations caused by battery life and lifespan and the space limitations of the power supply cable layout in the train 2000, while ensuring the efficiency of energy replenishment and meeting the energy replenishment needs of the sensor 2300 of the railway freight car.

[0037] In this embodiment, the positioning device 110 includes a barcode scanning camera. A QR code 2400 is provided on the train 2000, and the QR code 2400 includes the installation location information of the sensor 2300. The barcode scanning camera can scan the QR code 2400 to read the installation location information. By scanning the QR code 2400 on the train 2000 with the barcode scanning camera, the installation location information of the sensor 2300 in the QR code 2400 can be quickly obtained, so that the wireless charging device 210 can quickly align with the sensor 2300 for wireless charging and energy replenishment.

[0038] The installation location information of the sensor 2300 includes the installation coordinates of the sensor 2300. Specifically, the installation location information of each sensor 2300 can be directly encoded to obtain the two-dimensional code 2400, and the installation location information of the sensor 2300 can be directly obtained when the barcode scanning camera scans. In addition, the installation location information of each sensor 2300 can also be stored only in a storage device on the cloud or on the train 2000, and the link to access the storage device is encoded into the two-dimensional code 2400, and the two-dimensional code 2400 is scanned by the barcode scanning camera to access the link to obtain the installation location information of the sensor 2300.

[0039] In addition, the QR code 2400 also includes the configuration information of the sensor 2300 and the number information of the train 2000. When the barcode scanning camera scans the QR code 2400, the configuration information of the sensor 2300 and the number information of the train 2000 can also be obtained, so that the system can record the energy replenishment information of each sensor 2300 of each train 2000 to avoid repeated energy replenishment or missed energy replenishment of sensors 2300.

[0040] In this embodiment, each train section 2000 is provided with the two-dimensional code 2400, and each two-dimensional code 2400 records the installation position information of the sensor 2300 of the section. In addition, in other embodiments, the two-dimensional code 2400 may be provided on only one of the sections of the train, and the two-dimensional code 2400 records the installation position information of all sensors 2300 on the train 2000.

[0041] Referring to the figure, a QR code 2400 is set at the front and rear ends of the train 2000, and each QR code 2400 contains the same installation location information. Therefore, no matter from which direction the train 2000 enters the station, the scanning camera of the positioning device 110 can first scan the QR code 2400 to obtain the installation location information of the sensor 2300, thereby facilitating the one-to-one corresponding energy replenishment of the wireless charging device 210 and the sensor 2300.

[0042] Correspondingly, in this embodiment, two communication identification units 100 are provided, and the two communication identification units 100 are respectively provided outside the opposite sides of the energy replenishment unit 200. The two communication identification units 100 are respectively provided outside the opposite sides of the energy replenishment unit 200, so that when the train 2000 enters the station, the communication identification unit 100 can first obtain the installation position information of the sensor 2300, and then the train 2000 passes through the energy replenishment unit 200 through the wireless charging device 210 for charging and energy replenishment.

[0043] In this embodiment, a color mark is provided on the sensor 2300, and the color mark is used for the user to confirm and determine the position of the sensor 2300. The user can easily identify the position of the sensor 2300 through the color mark, which is convenient for charging, detecting and repairing the sensor 2300. Specifically, the color mark can be visually identified by a barcode scanning camera to confirm the relative position of the sensor 2300 and the wireless charging system 1000, and the installation coordinates of the sensor 2300 on the train 2000 are obtained in combination with the installation position information of the sensor 2300, and the relative position of each sensor 2300 relative to the train 2000 is obtained, so that the position of the sensor 2300 can be accurately determined, so that each wireless charging device 210 can charge and charge each sensor 2300 one by one.

[0044] Referring to the figure, in this embodiment, the communication identification unit 100 further includes a cleaning device 130, which is disposed on a side of the barcode scanning camera away from the energy replenishment unit 200, and is used to clean the two-dimensional code 2400. When the train 2000 enters the station, the train 2000 first passes through the cleaning device 130, and the cleaning device 130 cleans the two-dimensional code 2400 to prevent the two-dimensional code 2400 from being blocked by dirt and affecting the scanning of the barcode scanning camera.

[0045] Specifically, in this embodiment, the cleaning device 130 is a nozzle. When the train 2000 passes through the cleaning device 130, the cleaning device 130 sprays clean water to clean the two-dimensional code 2400.

[0046] In this embodiment, the information reading and writing device 120 adopts high-frequency passive RFID technology, which includes a communication antenna, a power recovery circuit, a power voltage stabilization / charging circuit, a reverse control circuit, a demodulation circuit, a clock extraction generation circuit, a start signal generation circuit, an MCU, and a memory. When the passive RFID tag chip is working, the power recovery circuit converts the ultra-high frequency signal sensed by the antenna into a DC voltage required for the MCU to work, providing energy for the MCU.

[0047] Referring to the figure, in this embodiment, the communication antenna can be connected to the wireless gateway 2200 through the lora or Bluetooth protocol, so that the sensor 2300 number, remaining power, last charging time, sensor 2300 health status and other information of the sensor 2300 can be read through the wireless gateway 2200, so as to facilitate the allocation of the wireless charging device 210 to charge each sensor 2300 and control the charging time of each sensor 2300. The information reading and writing device 120 can also send the current charging and energy replenishment information to the wireless gateway 2200 for query during the next wireless energy replenishment. At the same time, the wireless energy replenishment system 1000 can also remind the staff to replace the faulty sensor 2300 according to the health status of the sensor 2300.

[0048] In this embodiment, the wireless charging device 210 and the energy receiving device transmit energy via millimeter waves. The millimeter waves are used to recharge the sensor 2300, which has mature technology and high power, and can meet the needs of wireless recharging of the sensor 2300 of the train 2000.

[0049] This embodiment also provides a method for charging a sensor 2300 of a train 2000. The method is based on the wireless charging system 1000 described above. The method includes the following steps: S1. The communication identification unit 100 identifies the position of the sensor 2300; The positioning device 110 includes a barcode scanning camera, and a two-dimensional code 2400 including installation location information of the sensor 2300 is provided on the train 2000; the communication identification unit 100 also includes a cleaning device 130, and after the cleaning device 130 cleans the two-dimensional code 2400, the barcode scanning camera scans the two-dimensional code 2400 to obtain the installation location information of the sensor 2300; S2, the information reading and writing device 120 is connected to the wireless gateway 2200 of the train 2000 to obtain the status information of the sensor 2300; The status information of the sensor 2300 includes the sensor 2300 number, remaining power, last charging time, and health status of the sensor 2300; S3. According to the status information of the sensor 2300, the wireless charging device 210 is assigned to perform one-to-one wireless energy charging for the sensor 2300.

[0050] When the wireless charging system 1000 is used for charging, the installation location information of the sensor 2300 on the train 2000 is first obtained by scanning the code with the code scanning camera, and the installation location of the sensor 2300 is obtained. The information reading and writing device 120 is used to read and write the sensor 2300 number, the remaining power, the last charging time, the health status of the sensor 2300 and other information, so as to allocate wireless charging charging devices one by one to the sensor 2300 for wireless charging.

[0051] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A wireless energy replenishment system for train sensors, characterized in that: The train (2000) is provided with a wireless gateway (2200), and the sensor (2300) is wirelessly connected to the wireless gateway (2200); the wireless energy replenishment system (1000) is arranged outside the track, and the wireless energy replenishment system (1000) comprises a communication identification unit (100) and an energy replenishment unit (200); The communication identification unit (100) comprises a positioning device (110) and an information reading and writing device (120), wherein the positioning device (110) is used to obtain the position of the sensor (2300), and the information reading and writing device (120) can be wirelessly connected to the wireless gateway (2200) and read the status information of the sensor (2300); The energy replenishment unit (200) comprises a plurality of wireless charging devices (210), an energy receiving device is installed on the outside of each of the sensors (2300), and the wireless charging device (210) is configured to be arranged in a one-to-one correspondence with the plurality of sensors (2300) and to supply energy to the sensors (2300) through the energy receiving device; wherein the wireless charging device (210) is a radio wave wireless charging device (210), and the energy receiving device is a radio wave energy receiving device.

2. A wireless energy replenishment system for train sensors according to claim 1, characterized in that: The positioning device (110) includes a code scanning camera, a two-dimensional code (2400) is provided on the train (2000), the two-dimensional code (2400) includes installation location information of the sensor (2300), and the code scanning camera can scan the two-dimensional code (2400) to read the installation location information.

3. A wireless energy replenishment system for train sensors according to claim 2, characterized in that: The two-dimensional code (2400) also includes the configuration information of the sensor (2300) and the number information of the train (2000).

4. A wireless energy replenishment system for train sensors according to claim 2, characterized in that: The two-dimensional code (2400) is provided at each of the front and rear ends of the carriage of the train (2000), and each of the two-dimensional codes (2400) contains the same installation location information.

5. A wireless energy replenishment system for train sensors according to claim 4, characterized in that: Two communication identification units (100) are provided, and the two communication identification units (100) are respectively arranged outside the opposite sides of the energy replenishment unit (200).

6. A wireless energy replenishment system for train sensors according to claim 5, characterized in that: The communication identification unit (100) further comprises a cleaning device (130), wherein the cleaning device (130) is arranged on a side of the code scanning camera away from the energy replenishment unit (200), and the cleaning device (130) is used to clean the two-dimensional code (2400).

7. The wireless energy replenishment system for train sensors according to claim 1, characterized in that: The information reading and writing device (120) comprises a communication antenna, and the communication antenna is connected to the wireless gateway (2200) via a lora or bluetooth protocol.

8. The wireless energy replenishment system for train sensors according to claim 1, characterized in that: The sensor (2300) is provided with a color mark, and the color mark is used for a user to confirm and determine the position of the sensor (2300).

9. The wireless energy replenishment system for train sensors according to claim 1, characterized in that: Energy is transmitted between the wireless charging device (210) and the energy receiving device via millimeter waves.

10. A method for replenishing energy for a train sensor, characterized in that: The energy replenishment method is based on the wireless energy replenishment system (1000) according to any one of claims 1 to 9, and the energy replenishment method comprises the following steps: S1. The communication identification unit (100) identifies the position of the sensor (2300); The positioning device (110) includes a code scanning camera, and a two-dimensional code (2400) containing installation location information of the sensor (2300) is arranged on the train (2000); the communication identification unit (100) also includes a cleaning device (130), and after the cleaning device (130) cleans the two-dimensional code (2400), the code scanning camera scans the two-dimensional code (2400) to obtain the installation location information of the sensor (2300); S2, the information reading and writing device (120) is connected to the wireless gateway (2200) of the train (2000) to obtain the status information of the sensor (2300); The status information of the sensor (2300) includes the sensor (2300) number, remaining power, last charging time, and health status of the sensor (2300); S3. According to the status information of the sensor (2300), the wireless charging device (210) is assigned to perform one-to-one wireless energy replenishment on the sensor (2300).

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