CN104638873B - Push type electromagnetic transform pulse energy generator - Google Patents

Abstract

The invention discloses a push-type electromagnetic conversion pulse energy generator, which includes a power generation mechanism and an electric energy processing module; the power generation mechanism includes a hollow rectangular fixed iron core, and the left and right ends of the fixed iron core are respectively wound with a left coil and a For the right coil, there is a closed magnetic circuit deformation switching device inside the fixed iron core, and the closed magnetic circuit deformation switching device performs the deformation switching of the closed magnetic circuit under the action of the mechanical drive device; the left coil and the right coil are connected and then output; the electric energy The processing module includes a charging capacitor, the two ends of the charging capacitor are connected to the output terminals after the left coil and the right coil are connected, and the two ends of the charging capacitor are also connected to the signal input end of the wireless radio frequency transmitting module, and the signal output of the wireless radio frequency transmitting module is used to output the power signal ; Generate and provide a pulsating form of power sufficient to meet the limited distance transmission needs of wireless radio frequency transceiver devices through mechanical-magnetic-electrical conversion.

Description

A push-type electromagnetic conversion pulse energy generator

technical field

The invention relates to the technical field of energy conversion, in particular to a push-type electromagnetic conversion pulse energy generator.

Background technique

In recent years, the concept of green energy-saving and environmentally friendly buildings has been more and more widely respected. Especially in Europe and the United States, many green energy-saving buildings have appeared, and a large number of green energy-saving renovation projects have been implemented for existing traditional buildings. In the existing building automation field, the BEMS system (Building Energy Management System) is mostly used to reduce building energy consumption. However, the cost of buildings is not limited to the consumption of traditional energy such as water, electricity, heat, etc., but also includes the laying of cables, The cost of equipment maintenance such as switches, regulators, and battery replacement; of course, it also includes the discharge and treatment of pollutants such as sulfur and carbon dioxide produced in the process of power generation and heating, and harmful chemicals produced by waste batteries. resulting in certain economic costs.

Passive wireless switches or sensors are the basic components of passive wireless building control products. The successful application of these passive products benefits from the continuous development and mature energy harvesting technology, which enables us to fully utilize the weak indoor environmental energy in our daily life. use. For example, the mechanical energy of human body activities can serve the building automation and realize the purpose of wireless control. Before adopting passive wireless equipment, it often takes a lot of complicated work, such as wiring design, laying cables, etc. When passive wireless equipment is used, the complicated wiring and laying work will become redundant, thus saving a lot of installation materials and installation time, and greatly reducing the installation cost of the system. Switching electrical appliances are used to turn on or off the circuit, and usually rely on mechanical energy to realize the "on" and "off" of the circuit. Develop a kind of pulsating energy that generates a certain power by manual rotation, push-pull or rotation, etc., provide a micro-power consumption wireless transceiver device as a power source, and realize the energy module of "on" and "off", adjustment, sensing and measurement, etc. Furthermore, providing energy-saving, environment-friendly, and low-emission green electrical products will surely have huge application prospects and market space.

Contents of the invention

The purpose of the present invention is to provide a push-type electromagnetic conversion pulse energy generator, which generates and provides a pulsating power supply sufficient to meet the limited distance transmission requirements of wireless radio frequency transceiver devices through mechanical-magnetic-electrical conversion.

The technical scheme adopted in the present invention is:

A press-type electromagnetic conversion pulse energy generator, including a power generation mechanism and an electric energy processing module; There is a closed magnetic circuit deformation switching device inside the iron core, and the closed magnetic circuit deformation switching device performs the deformation switching of the closed magnetic circuit under the action of the mechanical drive device; the left coil and the right coil are connected and then output; the power processing module includes a charging Capacitor, the two ends of the charging capacitor are connected to the output terminals after the left coil and the right coil are connected, and the two ends of the charging capacitor are also connected to the signal input end of the wireless radio frequency transmitting module, and the signal output of the wireless radio frequency transmitting module is used to output the power signal.

The closed magnetic circuit deformation switching device includes a fixed shaft fixed in the fixed iron core, a rotatable moving iron core is sleeved on the fixed shaft, the fixed shaft and the moving iron core are in clearance fit, the left end and the right end of the moving iron core A left warp arm and a right warp arm are respectively provided, the left end of the left warp arm is fixedly connected to the vertically arranged left stopper, and the right end of the right warp arm is fixedly connected to the vertically arranged right stopper.

The mechanical driving device includes a left warping arm driver and a right warping arm driver, the left warping arm driver includes two connecting rods that are hinged at the end, the end of the first connecting rod is fixedly connected to the left warping arm, and the second connecting rod The top of the top passes through the upper end face of the fixed iron core and a button is installed on the top, and the structure of the left warping arm driver and the right warping arm driver is symmetrical.

The left stopper adopts a U-shaped metal frame with an opening facing left, and the right stopper adopts a U-shaped metal frame with an opening facing right.

The wireless radio frequency transmitting module adopts CC1101 wireless transmitting module.

The left coil and the right coil are connected in series or in parallel.

Both the fixed iron core and the moving iron core adopt magnets. .

In the present invention, when the first button or the second button is pressed by an external force, the device receives a linear motion with a certain speed formed by the pressing action, which is converted into a moving iron core, a fixed shaft, a left warped arm and a right warped arm through a mechanical transmission mechanism. The upturned or downturned mechanical movement of the lever structure, the rotation of the moving iron core around the fixed axis makes the rotatable iron core switch between the left upturned and right upturned positions, so that the left coil and the right coil in the magnetic circuit The magnetic The electric current changes and generates an induced electromotive force, which is rectified and filtered by a diode and then stored in a capacitor to provide electric energy for a micro-power load.

Description of drawings

Fig. 1 is the initial state structure schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the structure of the state after one press of the present invention;

Fig. 3 is the schematic diagram of the series circuit of the left coil and the right coil of the present invention;

Fig. 4 is a schematic diagram of the parallel circuit of the left coil and the right coil of the present invention.

detailed description

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the present invention includes a power generation mechanism and an electric energy processing module; the power generation mechanism includes a rectangular fixed iron core 1 in a hollow structure, and the left and right ends of the fixed iron core 1 are respectively wound There are left coil AB and right coil CD, fixed iron core 1 is provided with a closed magnetic circuit deformation switching device, and the closed magnetic circuit deformation switching device performs deformation switching of the closed magnetic circuit under the action of a mechanical drive device. The closed magnetic circuit deformation switching device includes a fixed shaft 2 fixed in the fixed iron core 1, the fixed shaft 2 is provided with a rotatable moving iron core 5, the fixed shaft 2 and the moving iron core 5 are in clearance fit, and the moving The left end and the right end of the iron core 5 are respectively provided with a left warp arm 3 and a right warp arm 4, the left end of the left warp arm 3 is fixedly connected to the vertically arranged left stopper Q1, and the right end of the right warp arm 4 is fixedly connected to a vertically arranged Right limiter Q2. The left limiter Q1 adopts a U-shaped metal frame with an opening facing the left, and the right limiter Q2 adopts a U-shaped metal frame with an opening facing the right. The mechanical driving device includes a left warping arm driver and a right warping arm driver, the left warping arm driver includes two connecting rods that are hinged at the end, the end of the first connecting rod L1 is fixedly connected to the left warping arm 3, the second one The top end of the connecting rod L2 passes through the upper end surface of the fixed iron core 1 and the button Y1 is installed on the top end, and the structure of the left warping arm driver and the right warping arm driver is symmetrical. Fixed iron core and moving iron core 5 all adopt magnets.

The power processing module includes a charging capacitor, the two ends of the charging capacitor are connected to the output terminals of the left coil AB and the right coil CD connected in series or in parallel, as shown in Figure 3 and Figure 4, the two ends of the charging capacitor are also connected to the wireless radio frequency transmitting module The signal input terminal of the wireless radio frequency transmitting module is used to output the power signal. The wireless radio frequency transmitting module adopts CC1101 wireless transmitting module.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the present invention. The described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

Working principle of the present invention is described in detail in conjunction with embodiment:

As shown in FIG. 1 , which is a schematic diagram of the initial state of the present invention, the moving iron core 5 , the left warping arm 3 and the right warping arm 4 are inclined to the upper right, and the right warping arm driver is higher than the left warping arm driver. In FIG. 1 , the right end of the moving iron core 5 is the N pole, and the left end is the S pole. According to the closed principle of magnetic lines of force, the magnetic flux passing through the coil II forms a closed magnetic circuit from top to bottom and clockwise, as shown in the O—a ₀ —a ₁ —a ₂ —a ₃ —O line in Figure 1; through the coil I The magnetic flux from top to bottom forms a closed magnetic circuit counterclockwise, as shown by O—b ₀ —b ₁ —b ₂ —b ₃ —O in Figure 1. Assuming that the magnetic flux is positive from top to bottom, and vice versa is negative, the total magnetic flux provided by the moving iron core 5 is 2Φ, ignoring the influence of magnetic flux leakage, the magnetic flux passing through coil I and coil II is both Φ in this state.

When there is an external force to press the button of the right warping arm driver, the closed magnetic circuit deformation switching device will perform the deformation switching of the closed magnetic circuit under the action of the external force, and the right end of the right warping arm 4 moves downward under the pressing of the right warping arm driver, Make the left end of the left warping arm 3 move upwards. Since the moving iron core 5 is arranged between the left warping arm 3 and the right warping arm 4, when the left warping arm 3 and the right warping arm 4 change, the right end of the moving iron core 5 will also warp downwards and the left end will warp up. The transformation of , at this time, is in state two. According to the closed principle of the magnetic force line, the direction of the magnetic flux passing through the coil II changes, and becomes from bottom to top, forming a closed loop counterclockwise. In the figure, O—a ₀ —a ₁ —a ₂ —a ₃ —a ₄ —a ₅ — As shown by O; the direction of the magnetic flux passing through the coil I changes, and becomes from bottom to top, forming a closed loop in a clockwise direction. In the figure, O—b ₀ —b ₁ —b ₂ —b ₃ —b ₄ —b ₅ —O shown. Same as the above settings, the magnetic flux is positive from top to bottom, and negative if it is negative, the total magnetic flux provided by the permanent magnet is 2Φ, and the influence of magnetic flux leakage is ignored. In this state, the magnetic flux passing through coils I and II is both -Φ.

Therefore, when the initial state changes to state 2, the magnetic flux in coils I and II gradually decreases from Φ to 0, and then gradually from 0 to -Φ. The change of the magnetic flux is recorded as: Φ→0→-Φ. That is, from the initial state to the second state, the magnetic flux changes in coils I and II are both 2Φ.

In summary, the present invention forms a linear motion with a certain speed through the manual finger pressing action, which is converted into a lever composed of the moving iron core 5, the fixed shaft 2, the left warping arm 3 and the right warping arm 4 through mechanical transmission. The upward or downward mechanical movement of the structure is limited by the positions of the left stopper Q1 and the right stopper Q2, thereby limiting the range of rotation of the moving iron core 5 around the fixed axis 2, so that the rotatable iron core will be in the upper left Warp and right-up warp positions switch between each other. When the moving iron core 5 is in the right upward warping state and the left upward warping state or from the left upward warping state to the right upward warping state, the magnetic flux passing through the left coil ABAB and the right coil CDCD in the parallel or series magnetic circuit is changed by Φ Change to -Φ or change from -Φ to Φ, according to Faraday's law of electromagnetic induction:

Where: ε—the induced electromotive force in the coil;

N—coil turns;

—The amount of flux change, Φ is determined by the magnetization of the permanent magnet (adjustable);

Δt—the switching time between the two positions of the moving iron core 5 (about 3 milliseconds).

According to the above formula, the induced electromotive force generated by the two coils can be calculated respectively. When the left coil ABAB and the right coil CDCD are connected in series, the induced electromotive force generated is rectified and filtered by diodes D1 and D2, and stored in the charging capacitor C1 to provide electric energy for micro-power loads. According to different load requirements, the induced electromotive force of the two coils can be output in series or in parallel. The magnitude of the induced electromotive voltage generated by each coil depends on the number of turns of the coil, and the magnitude of the induced electromotive power generated by each coil depends on the pressing force, pressing speed, travel distance and the design of the magnetic circuit.

From the perspective of energy conversion, if the pressure of the finger pressing the button is 5 Newtons, the displacement of the button line is 1mm, and the displacement of the button line refers to the displacement of the button moving up and down. Then the work done by one press is 5×10 ^-3 =5mJ, and the energy is converted into electric energy by the electromagnetic mechanism to provide power supply for the load.

Referring to Figure 2 and Figure 3, it is a schematic diagram of the connection of the left coil ABAB and the right coil CDCD provided by the present invention, Figure 2 is a parallel application, Figure 3 is a series application, and the symbol "●" in the figure indicates the end of the coil with the same name.

Referring to Fig. 3, it is a schematic diagram of coil series application provided by the present invention, which includes rectifier diodes D1 and D2 to form full-wave rectification, charging capacitor C1 has energy storage and filtering functions, and the power load is a micro-power radio frequency transmitting module. In the figure, the power supply voltage of the RF transmitter module is 5V, the working current in the transmitting state is 15mA, and the transmission rate is 125kbps. The working mode is intermittent transmission, and one frame of information is transmitted each time. The frame format is composed of 32-bit "0" or "1" sequence codes. , the sequence code includes start bit, address bit, command bit, end bit, etc. From this, the energy E consumed by each transmission operation of the wireless radio frequency transmission module can be calculated as

The radio frequency transmitting module adopts the CC1101 type wireless transmitting module, which belongs to the existing mature technology and will not be repeated here.

In summary, the device of the present invention converts the mechanical energy of a finger press once through the electromagnetic mechanism, and then provides power supply to the load after being processed by the rectifier and energy storage circuit. After actual testing, the energy of a press is about 5mJ, and finally output to the radio frequency transmission module Energy as a power source exceeds 300 , for the radio frequency transmitting module to continuously transmit about 10 frames of data information. In practical applications, for example, it can be used as a lighting switch. The device is integrated with a radio frequency transmitter module and installed on an indoor wall as a push switch; the radio frequency receiver module is integrated with a relay and connected to a lamp as a lighting power on-off device. There is wireless communication between the push switch and the lamp. When the push switch is pressed by hand, the radio frequency transmitting module sends a set of digital codes, and the remote radio frequency receiving module controls the relay "on" and "off" according to the received digital code, thus Realize the wireless opening or closing of lighting and other tools. Here, the device is used as a "passive wireless remote control switch".

Claims (5)

1. A press-type electromagnetic conversion pulse energy generator, characterized in that: it comprises a power generating mechanism and an electric energy processing module; The coil and the right coil are provided with a closed magnetic circuit deformation switching device inside the fixed iron core, and the closed magnetic circuit deformation switching device performs the deformation switching of the closed magnetic circuit under the action of the mechanical drive device; the left coil and the right coil are connected and then output; The power processing module includes a charging capacitor. The two ends of the charging capacitor are connected to the output terminals after the left coil and the right coil are connected. power signal; The closed magnetic circuit deformation switching device includes a fixed shaft fixed in the fixed iron core, a rotatable moving iron core is sleeved on the fixed shaft, the fixed shaft and the moving iron core are in clearance fit, the left end and the right end of the moving iron core There are respectively a left warping arm and a right warping arm, the left end of the left warping arm is fixedly connected to the vertically arranged left stopper, and the right end of the right warping arm is fixedly connected to the vertically arranged right stopper; The mechanical driving device includes a left warping arm driver and a right warping arm driver, the left warping arm driver includes two connecting rods that are hinged at the end, the end of the first connecting rod is fixedly connected to the left warping arm, and the second connecting rod The top of the top passes through the upper end face of the fixed iron core and a button is installed on the top, and the structure of the left warping arm driver and the right warping arm driver is symmetrical. 2. The push-type electromagnetic conversion pulse energy generator according to claim 1, characterized in that: the left stopper adopts a U-shaped metal frame with the opening facing the left, and the right stopper adopts a U-shaped metal frame with the opening facing the right metal frame. 3. The push-type electromagnetic conversion pulse energy generator according to claim 1, characterized in that: the wireless radio frequency transmitting module adopts CC1101 wireless transmitting module. 4. The push-type electromagnetic conversion pulse energy generator according to claim 1, wherein the left coil and the right coil are connected in series or in parallel. 5. The push-type electromagnetic conversion pulse energy generator according to claim 1, characterized in that: both the fixed iron core and the moving iron core are made of magnets.