ENERGY SUPPLY METHOD AND DEVICE FOR MONITORING WIRELESS SENSOR NODE OF ROLLER

• US 20170098955A1
• Filed: 05/13/2015
• Published: 04/06/2017
• Est. Priority Date: 10/15/2014
• Status: Active Grant

• Current Assignee: China University of Mining and Technology
• Original Assignee: China University of Mining and Technology
• Inventors: ZHANG, Peng, WANG, Penghui, ZHOU, Gongbo, ZHU, Zhencai, LI, Wei, CAO, Guohua
• Granted Patent: US 9,912,190 B2
• Time in Patent Office: Days
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H04L 12/10 Current supply arrangements
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

An energy supply method and device for a monitoring wireless sensor node of a roller. A node energy supply device (2) is arranged on a roller web (1). The node energy supply device (2) comprises a generator (2-1), a disc rail (2-3), an input shaft (2-4), a swing link (2-5), a swing wheel (2-8) and an energy collection module (2-10). The generator (2-1) is driven to rotate using the rotation motion of the roller, the mechanical energy is converted into electric energy by the generator (2-1), and power is supplied to a monitoring wireless sensor node by the energy collection module (2-10). After rectification, filtering and voltage stabilization are conducted on the electric energy generated by cutting a magnetic induction line when the generator (2-1) operates, the energy collection module (2-10) uses the electric energy for charging an internal battery of the monitoring wireless sensor node. When the roller operates, the swing wheel (2-8) will keep vertically downward because of the gravity action thereof, thereby rotating relative to the input shaft (2-4) of the generator (2-1) to drive the generator (2-1) to operate. The present invention has the advantages of simple structure without manual operations, and energy saving and environmental protection.

Claims

1. A power supplying device for roller monitoring wireless sensor node, comprising a node power supplying device (2) disposed on a roller web (1), the node power supplying device (2) includes an electric generator (2-1), a round disc rail (2-3), an input shaft (2-4), a swinging rod (2-5), a swinging wheel (2-8), and an energy collection module (2-10);

the electric generator (2-1) is used to convert mechanical energy to electric energy, and supply electricity to the monitoring wireless sensor node through the energy connection module (2-10);

the round disc rail (2-3) is used to ensure the swinging wheel (2-8) to move in a preset rail, and ensure to prevent a security risk of the swinging wheel (2-8) to fly out when a failure occurs;

the electric generator (2-1) and the round disc rail (2-3) are fixed on sides of the roller web (1) through bolts (2-2), the electric generator (2-1) is located at an inner side of the roller web (1), and the round disc rail (2-3) is located at an outer side of the roller web (1);

the energy collection module (2-10) is disposed on an outer surface of a tail of the electric generator (2-1), and is mainly used to apply electric energy generated when the electric generator (2-1) cuts a magnetic induction line in the working process to charge an internal battery of the monitoring wireless sensor node after rectifying, filtering and voltage stabilization are conducted on the electric energy;

the input shaft (2-4) of the electric generator (2-1) is provided with the swinging rod (2-5); and

an end of the swinging rod (2-5) is provided with the swinging wheel (2-8).

2. The power supplying device for roller monitoring wireless sensor node according to claim 1, wherein central location of the node power supplying device (2) is apart from three quarters of central location of the roller web (1), and radius size of the node power supplying device (2) is less than a quarter of radius size of the roller web (1).

3. The power supplying device for roller monitoring wireless sensor node according to claim 1, wherein the swinging rod (2-5) is located inside the round disc rail (2-3), is radially positioned with respect to the input shaft (2-4) of the electric generator through a flat key or spline (2-7), and is axially positioned with respect to the input shaft (2-4) of the electric generator through a fasten nut (2-6);

and double fasten nuts (2-6) are adopted to enable the axial positioning of the swinging rod (2-5) to be more reliable.

4. The power supplying device for roller monitoring wireless sensor node according to claim 1 wherein the swinging wheel (2-8) is fixed at a terminal end of the swinging rod (2-5) through a set screw (2-9).

5. A power supplying method using the power supplying device for roller monitoring wireless sensor node according to claim 1, comprising disposing a node power supplying device (2) on a roller web (1), wherein when the roller web (1) rotates, the node power supplying device (2) rotates along with the roller web (1), and a swinging wheel (2-8) in the node power supplying device (2) keeps vertically downwards due to a self gravity action of the swinging wheel (2-8), so that relative rotation with respect to an input shaft (2-4) of a electric generator in the node power supplying device (2) is generated, thereby driving the electric generator (2-1) to work;

when the roller web (1) rotates an angle θ

₁, due to a centripetal force and gravity applied to the swinging wheel (2-8), the swinging wheel (2-8) would rotate around an output shaft (2-4) of the electric generator by an angle α

₁;

along with the rotation of the roller web (1), the swinging wheel (2-8) drives the input shaft (2-4) of the electric generator to continuously rotate, thereby generating electric energy;

an energy collection module (2-10) disposed on the node power supplying device (2) transmits the electric energy generated when the electric generator (2-1) works to an accumulator inside the node power supplying device (2) after rectifying, filtering and voltage stabilization are conducted on the electric energy, so as to provide desired electric energy for normal work of the monitoring wireless sensor node;

when the roller web (1) performs a uniform circular motion, a normal rotating speed range of the roller can ensure the swinging wheel (2-8) to be capable of continuously driving the input shaft (2-4) of the electric generator to rotate; and

when the rotation of the roller web (1) is a speed-variable circular motion, since the centripetal force applied to the swinging wheel (2-8) during the rotating process continuously changes, along with the gravity action, the swinging wheel (2-8) is also capable of driving the electric generator (2-1) to generate electricity.