阅读说明：本技术 一种基于振动能量采集器的自供电铁路货车状态监测系统 (Self-powered railway wagon state monitoring system based on vibration energy collector ) 是由 侯晓伟 吕阳 郑良广 张坡 武鹏 于 2020-08-24 设计创作，主要内容包括：本发明提供了一种基于振动能量采集器的自供电铁路货车状态监测系统,涉及铁路货车状态监测技术领域,用以解决目前铁路货车的无线收发模块和传感器模块的能量供给的问题以及尺寸要求高的问题,本系统包括：设置在铁路货车上,用于采集铁路货车运行时的机械能,并将采集的机械能转化为电能的MEMS振动能量采集器、用于接收MEMS振动能量采集器输出的交流电,并将接收的交流电转化为直流电的整流模块、传感器模块以及将接收的预设数据信息发送至后台服务器的无线收发模块。本自供电铁路货车状态监测系统能够大幅减小器件整体尺寸,还能提高一致性和稳定性。(The invention provides a self-powered railway wagon state monitoring system based on a vibration energy collector, which relates to the technical field of railway wagon state monitoring and is used for solving the problems of energy supply of a wireless transceiver module and a sensor module of the current railway wagon and high size requirement, and comprises the following components: the system comprises an MEMS vibration energy collector, a rectification module, a sensor module and a wireless receiving and transmitting module, wherein the MEMS vibration energy collector is arranged on a railway wagon and used for collecting mechanical energy generated when the railway wagon runs and converting the collected mechanical energy into electric energy, the rectification module is used for receiving alternating current output by the MEMS vibration energy collector and converting the received alternating current into direct current, and the wireless receiving and transmitting module is used for transmitting the received preset data information to a background server. The self-powered railway wagon state monitoring system can greatly reduce the overall size of a device and can also improve the consistency and stability.)

1. A self-powered railway wagon condition monitoring system based on a vibration energy harvester is characterized by comprising: the system comprises an MEMS vibration energy collector, a rectifying module, a sensor module and a wireless transceiving module;

the MEMS vibration energy collector is arranged on the railway wagon and used for collecting mechanical energy generated when the railway wagon runs and converting the collected mechanical energy into electric energy;

the rectification module is used for receiving the alternating current output by the MEMS vibration energy collector, converting the received alternating current into direct current and supplying power to the wireless transceiving module and the sensor module;

the sensor module is used for acquiring preset data information of the railway wagon in the running process;

the wireless transceiving module is used for receiving preset data information of the railway wagon in the running process, which is acquired by the sensor module, and sending the received preset data information to the background server.

2. A self-powered railway wagon condition monitoring system based on a vibration energy harvester as defined in claim 1, further comprising a battery;

the battery is connected with the wireless transceiver module and used for supplying power to the wireless transceiver module when the output power of the MEMS vibration energy collector does not reach the preset required power.

3. A vibration energy harvester-based self-powered rail wagon condition monitoring system as claimed in claim 2, wherein the battery is connected to the rectifier module for powering the rectifier module when the output voltage of the MEMS vibration energy harvester is less than a preset demand voltage for the rectifier module.

4. A self powered railway wagon condition monitoring system based on a vibration energy harvester as claimed in claim 1, wherein the MEMS vibration energy harvester is fabricated using a MEMS process and a TSV filling process.

5. A self powered railway wagon condition monitoring system based on a vibration energy harvester as claimed in claim 4, wherein the MEMS vibration energy harvester comprises a plurality of energy harvesters.

6. A self powered railway wagon condition monitoring system based on a vibration energy harvester as claimed in claim 5, wherein the plurality of energy harvesters are arranged in a predetermined array combination, and the plurality of energy harvesters arranged in the predetermined array combination are connected in a predetermined series-parallel connection.

7. A self-powered railway wagon condition monitoring system based on a vibration energy harvester as claimed in claim 1, wherein the sensor module comprises: temperature sensors, current sensors, voltage sensors, humidity sensors, and acceleration sensors.

8. A self powered railway wagon condition monitoring system based on a vibration energy harvester as claimed in claim 4, wherein the MEMS vibration energy harvester is disposed on a wagon body, bogie or axle of a railway wagon.

9. A self-powered railway wagon condition monitoring system based on a vibration energy harvester as claimed in claim 5, wherein the energy harvester comprises a three-dimensional solenoid coil, a permanent magnet, and a chamber for placement of the permanent magnet, the permanent magnet being inserted into the chamber.

Technical Field

The invention relates to the technical field of railway wagon state monitoring, in particular to a self-powered railway wagon state monitoring system based on a vibration energy collector.

Background

With the rapid development of high-speed railways, the importance of real-time monitoring of the health and the running state of train structures is increasingly prominent. Particularly in the field of railway freight cars, data such as running speed, bearing temperature, bearing cracks, bearing vibration and the like need to be monitored in real time, so that the healthy running of the whole freight car is ensured. Monitoring these data, need to be equipped with corresponding sensor or sensing system and carry out data acquisition and transmission, and these sensors belong to the active device, need external power supply to supply power and guarantee normal work, and external power supply's acquisition is usually satisfied through deploying the power cable line. However, in the field of railway wagons, due to the particularity of the use, the deployment of electric cables is not practical, on the one hand because the wagons require the specific configuration of the electric receiving devices, which is very expensive if only small sensors (systems) are supplied (power is generally in the W class); on the other hand, the deployment of the power cable has serious electromagnetic interference, which can affect the operation safety of the railway freight car. Therefore, a new power supply system is urgently needed to be developed to support the condition monitoring of the railway wagon.

Disclosure of Invention

In order to solve the problems, the invention provides a self-powered railway wagon state monitoring system based on a vibration energy collector, which is used for solving the problems of energy supply and high size requirement of a wireless sensing system of a railway wagon.

In order to achieve the above object, the railway wagon state monitoring system comprises: the system comprises an MEMS vibration energy collector, a rectifying module, a sensor module and a wireless transceiving module;

the MEMS vibration energy collector is arranged on the railway wagon and used for collecting mechanical energy generated when the railway wagon runs and converting the collected mechanical energy into electric energy;

the rectification module is used for receiving the alternating current output by the MEMS vibration energy collector, converting the received alternating current into direct current and supplying power to the wireless transceiving module and the sensor module;

the sensor module is used for acquiring preset data information of the railway wagon in the running process;

the wireless transceiving module is used for receiving preset data information of the railway wagon in the running process, which is acquired by the sensor module, and sending the received preset data information to the background server.

Further, the device also comprises a battery;

the battery is connected with the wireless transceiver module and used for supplying power to the wireless transceiver module when the output power of the MEMS vibration energy collector does not reach the preset required power.

Further, the battery is connected with the rectifying module and used for supplying power to the rectifying module when the output voltage of the MEMS vibration energy collector is lower than the preset required voltage of the rectifying module.

Further, the MEMS vibration energy collector is prepared by adopting an MEMS process and a TSV filling process.

Further, the MEMS vibration energy harvester includes a plurality of energy harvesters.

Further, the plurality of energy collectors are arranged according to a preset array combination, and the plurality of energy collectors arranged according to the preset array combination are connected according to a preset series-parallel connection relationship.

Further, the sensor module includes: temperature sensors, current sensors, voltage sensors, humidity sensors, and acceleration sensors.

Further, the MEMS vibration energy harvester is arranged on the body, the bogie or the wheel axle of the railway wagon.

Further, the energy collector includes a three-dimensional solenoid, a permanent magnet, and a chamber in which the permanent magnet is placed, the permanent magnet being inserted into the chamber.

The invention has the following beneficial effects:

(1) according to the self-powered railway wagon state monitoring system based on the vibration energy collector, the vibration energy collector is adopted for collecting mechanical energy of a railway wagon, the collected mechanical energy is converted into electric energy, and power supply for a wireless receiving and transmitting module of the railway wagon state monitoring system is achieved.

(2) According to the self-powered railway wagon state monitoring system based on the vibration energy collector, the vibration energy collector is manufactured by adopting an MEMS (micro electro mechanical systems) process, so that the overall size of a device can be greatly reduced, and the consistency and stability of the vibration energy collector can be improved.

(3) The MEMS vibration energy collector is adopted to mainly supply power to the sensor module and the wireless transceiver module, and the battery is used for assisting power supply, so that the battery replacement time of the state monitoring system can be effectively prolonged, and the service life of the sensor module is prolonged.

Drawings

FIG. 1 is a system structure diagram of a railway wagon state monitoring system based on a vibration energy harvester.

Fig. 2 is a schematic structural diagram of an array type vibration energy harvester of a railway wagon state monitoring system based on the vibration energy harvester.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.