A battery-free infrared remote control system control device and method

Abstract

This invention discloses a battery-free infrared remote control system control device and method. The system includes an energy harvesting system, a zero-power triggering system, and an infrared remote control system. The zero-power triggering system includes a piezoelectric film and a power management module. The piezoelectric film is connected to a rectifier module, the output terminal of which is connected to the gate of a first MOS switch. The drain of the first MOS switch is connected to the output terminal of the energy harvesting circuit, and the source of the first MOS switch is connected to the positive terminal of a charging capacitor. The positive terminal of the charging capacitor is connected to the input terminal of a second voltage detection circuit, and the output terminal of the second voltage detection circuit is connected to the output terminal of the energy harvesting module through a second pull-up resistor. The drain of the second MOS switch is connected to the output terminal of the energy harvesting module, and the source is connected to the input terminal of the power management module. The output of the power management module provides voltage to the infrared remote control system. This device requires no battery or charging, effectively eliminating standby power consumption of the load.

Description

Technical Field

[0001] This invention relates to the field of electronic price tag technology, specifically to a battery-free infrared remote control system control device and method. Background Technology

[0002] Infrared remote control technology is a device used to remotely control machines. Modern remote controls mainly consist of an integrated circuit board and buttons that generate different signals. Common remote controls include air conditioner and television remote controls. These remote controls spend more than 95% of their time in standby mode, and currently, standby power consumption in remote controls is relatively high, accounting for more than 2 / 3 of the total power consumption. Summary of the Invention

[0003] To address the power supply issues of existing infrared remote control technologies, this invention relates to a battery-free infrared remote control system control device and method. This device utilizes solar energy harvesting technology to provide power to the system, thus eliminating the need for batteries and charging.

[0004] To achieve the above objectives, the present invention provides the following technical solution.

[0005] A battery-free infrared remote control system control device includes an energy harvesting system, a zero-power triggering system, and an infrared remote control system;

[0006] The energy harvesting system includes a solar panel, a first voltage detection circuit, and an energy harvesting circuit. The solar panel is connected to the input terminal of the first voltage detection circuit, the output terminal of the first voltage detection circuit is connected to the output terminal of the energy harvesting circuit through a first pull-up resistor, the output terminal of the first voltage detection circuit is connected to the enable terminal of the energy harvesting circuit, the solar panel is also connected to the input terminal of the energy harvesting circuit, and the output terminal of the energy harvesting circuit is connected to an energy storage supercapacitor.

[0007] The zero-power triggering system includes a piezoelectric film, a rectifier module, a second voltage detection circuit, a MOS switch, and a power management module. The piezoelectric film is connected to the rectifier module, the output of the rectifier module is connected to the gate of the first MOS switch, the drain of the first MOS switch is connected to the output of the energy harvesting circuit, and the source of the first MOS switch is connected to the positive terminal of the charging capacitor. The positive terminal of the charging capacitor is connected to the input of the second voltage detection circuit, the output of the second voltage detection circuit is connected to the output of the energy harvesting module through a second pull-up resistor, and is also connected to the gate of the second MOS switch. The drain of the second MOS switch is connected to the output of the energy harvesting module, and the source of the second MOS switch is connected to the input of the power management module. The output of the power management module provides voltage for the infrared remote control system.

[0008] As a further improvement of the present invention, the output terminal of the energy harvesting circuit is connected to the positive terminal of the energy storage supercapacitor, and the negative terminal of the energy storage supercapacitor and the negative terminal of the voltage detection circuit are both connected to the ground terminal.

[0009] As a further improvement of the present invention, the output terminal of the power management module is connected to the positive terminal of the infrared remote control system, and the negative terminals of the infrared remote control system and the power management module are both connected to the ground terminal; the negative terminal of the charging capacitor is grounded.

[0010] As a further improvement of the present invention, the infrared remote control system includes a button module, a signal processing and control module, and a display screen. The button module, the signal processing and control module, and the display screen are electrically connected in sequence, and the signal processing and control module is also connected to a signal transmitting end.

[0011] As a further improvement of the present invention, both the first MOS switch and the second MOS switch are NMOS switches.

[0012] A control method for a battery-free infrared remote control system control device includes the following steps:

[0013] The voltage detection circuit detects the voltage of the solar panel;

[0014] When the voltage output by the solar panel is lower than the threshold of the first voltage detection circuit, the energy harvesting circuit enters the shutdown state; the zero-power triggering system automatically shuts down the infrared remote control system.

[0015] When the voltage output by the solar panel is higher than the threshold of the first voltage detection circuit, the first voltage detection circuit enables the energy harvesting circuit to work; the zero-power triggering system automatically connects the infrared remote control system to supply power to the infrared remote control system.

[0016] As a further improvement of the present invention, when the input voltage of the voltage detection circuit is lower than the threshold of the first voltage detection circuit, the output of the voltage detection circuit remains at a low level; the energy harvesting circuit enters a shutdown state; and the zero-power triggering system automatically shuts down the infrared remote control system.

[0017] When the voltage is higher than the threshold of the first voltage detection circuit, the output of the voltage detection circuit is switched to a high level and the voltage to the input is kept lower than the drop threshold of the voltage detection circuit; the output of the voltage detection circuit is high, the energy harvesting circuit is enabled; the zero-power triggering system automatically connects the infrared remote control system.

[0018] The power management module of the zero-power triggering system converts the voltage to DC to power the infrared remote control system.

[0019] As a further improvement of the present invention, the zero-power triggering system can eliminate the original standby power consumption of the remote control system. The system monitors the action of pressing the button, and the action of pressing the button will activate the entire load system.

[0020] Pressing the piezoelectric film converts the AC power output by the piezoelectric film into DC power.

[0021] When the output voltage of the rectifier module is higher than the threshold of the first NMOS switch, the first NMOS switch is turned on, and the charging capacitor starts to charge. When the pressing action ends, the charging capacitor stops charging. After the charging is finished, the charging capacitor will slowly leak current.

[0022] When the voltage of the charging capacitor is higher than the threshold of the second voltage detection circuit, the output of the second voltage detection circuit is high; when the voltage of the charging capacitor is lower than the threshold of the second voltage detection circuit, the output of the second voltage detection circuit is low.

[0023] When the output of the second voltage detection circuit is high, the second NMOS switch is turned on, and the zero-power triggering system automatically turns on the infrared remote control system to supply power to the infrared remote control system.

[0024] When the output of the second voltage detection circuit is low, the second NMOS switch is turned off, and the zero-power triggering system automatically shuts down the infrared remote control system.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] This invention employs solar energy harvesting technology as the power source for an infrared remote control system. It utilizes a zero-power continuous voltage detection technology to reduce the power consumption of both the energy harvesting system and the infrared remote control system, improving the efficiency of the energy harvesting system while reducing the power consumption of the load. This allows the system to operate without the constraints of batteries and charging in practical applications. Through a zero-power standby voltage detection circuit, standby power consumption of the load can be effectively eliminated, and the energy harvesting efficiency of the solar system can be improved, thereby enabling the entire remote control system to be powered by collecting indoor light energy.

[0027] Furthermore, the system provides infrared signal transmission and integrates display functionality. Attached Figure Description

[0028] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. In the drawings:

[0029] Figure 1This is a schematic diagram of the system structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the signal control of the first voltage detection circuit in this invention. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0032] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] like Figure 1 As shown, the present invention provides a battery-free infrared remote control system control device, comprising an energy harvesting system, a zero-power triggering system, and an infrared remote control system.

[0035] The energy harvesting system includes a solar panel, a first voltage detection circuit LX01, and an energy harvesting module LX02. The zero-power triggering system includes a piezoelectric film, a second voltage detection circuit LX03, a MOSFET switch, and a power management module. The infrared remote control system includes a button module, a signal processing and control module, and a display screen.

[0036] In this system, the solar panel is connected to the input terminal V of the first voltage detection circuit LX01. in The connection is V. OD1 Output terminal V OD1 The first pull-up resistor R1 is connected to the output terminal VBAT of the energy harvesting module LX02. The output terminal V of the first voltage detection circuit LX01 is...OD1 The solar panel is connected to the enable terminal of the energy harvesting module LX02, and is also connected to the input terminal of the energy harvesting module LX02. The output terminal of the energy harvesting module LX02 is VBAT, which is connected to the energy storage supercapacitor C1. The energy storage supercapacitor C1 provides energy to other systems.

[0037] In the zero-power triggering system, the piezoelectric film is connected to the rectifier module to convert AC to DC. The output of the rectifier module is connected to the gate of the first MOS switch Q1. The drain of the first MOS switch Q1 is connected to VBAT, and the source is connected to the positive terminal of the charging capacitor C2. The negative terminal of the charging capacitor C2 is grounded. The positive terminal of the charging capacitor C2 is connected to the input terminal V of the second voltage detection circuit LX03. in Connection, the output V of the second voltage detection circuit LX03 OD2 The second pull-up resistor R2 is connected to the output terminal VBAT of the energy harvesting module LX02 and to the gate of the second NMOS switch Q2. The drain of the second NMOS switch Q2 is connected to the output terminal VBAT of the energy harvesting module LX02, and the source is connected to the input V of the power management module. in Connected, the output V of the power management module DD Provides a stable voltage for the infrared remote control system.

[0038] In an infrared remote control system, button combinations represent different commands. Pressing a button transmits information to a digital signal processing and control module, which then transmits the information to the infrared transmitter port and the display screen.

[0039] like Figure 1 As shown, the present invention provides a battery-free infrared remote control system control device comprising an energy harvesting system, a zero-power triggering system, and an infrared remote control system. The control method based on the aforementioned battery-free infrared remote control system control device includes the following steps:

[0040] The voltage detection circuit detects the voltage of the solar panel;

[0041] When the voltage output by the solar panel is lower than the threshold of the first voltage detection circuit, the energy harvesting circuit enters the shutdown state; the zero-power triggering system automatically shuts down the infrared remote control system.

[0042] When the voltage output by the solar panel is higher than the threshold of the first voltage detection circuit, the first voltage detection circuit enables the energy harvesting circuit to work; the zero-power triggering system automatically connects the infrared remote control system to supply power to the infrared remote control system.

[0043] The specific steps are as follows:

[0044] The solar panel in the energy harvesting system is connected to the input terminal V of the first voltage detection circuit LX01.in Connection. When V in The voltage is lower than the threshold V of the first voltage detection circuit LX01. TH At that time, the output V of the first voltage detection circuit LX01 OD1 Keep low level, when V in The voltage is higher than the threshold V of the first voltage detection circuit LX01. TH At that time, the output V of the first voltage detection circuit LX01 OD1 Switch to high level and hold until V. in The voltage is lower than the drop threshold V of the first voltage detection circuit LX01. TL Its signal diagram is as follows Figure 2 As shown. V OD1 The solar panel is connected to the enable terminal En of the energy harvesting module LX02 via the first pull-up resistor R1. When there is sunlight indoors, the solar panel outputs a high voltage, exceeding V. TH When the energy harvesting module LX02 is enabled, and there is no sunlight indoors, the solar panel outputs a low voltage, and the energy harvesting module LX02 enters a shutdown state. The voltage detection circuit chip LX01 ensures that the energy harvesting system only operates when the harvestable energy exceeds the static power consumption of the energy harvesting module LX02, thus improving energy harvesting efficiency. The output of the solar panel is simultaneously connected to the input terminal V of the energy harvesting module LX02. in The LX02 energy harvesting module employs maximum power point tracking (MPPT) to improve energy harvesting efficiency. The LX02's output is VBAT, which is connected to capacitor C1, serving as the primary energy storage capacitor and providing energy for other systems.

[0045] The zero-power triggering system eliminates the standby power consumption of the remote control system. This system monitors button presses, activating the entire load system upon button activation. The piezoelectric film's output is connected to a rectifier module, converting the AC power from the piezoelectric film into DC power. The rectifier module's output is connected to the gate of the first NMOS switch Q1. The source of Q1 is connected to the charging capacitor C2, and its drain is connected to VBAT. When the rectifier module's output exceeds the threshold voltage V of the first NMOS switch Q1... gs(th) When the pressing action ends, Q1 conducts, and charging capacitor C2 begins charging. When the pressing action ends, charging capacitor C2 stops charging. After charging is complete, charging capacitor C2 will slowly leak current. The capacitance of C2 determines the duration of the load system's delayed shutdown. The positive terminal of C2 is connected to the input terminal V of the first voltage detection circuit LX01. in Connection, when the voltage of C2 is higher than V TH At that time, the output V of the second voltage detection circuit LX03 OD2 High level, when the voltage is lower than V TL When, output V OD2The voltage level is low. The output V of the second voltage detection circuit LX03 is low. OD2 The second pull-up resistor R2 is connected to the gate of the second NMOS switch Q2, the drain is connected to VBAT, and the source is connected to the input V of the power management module. in Since the voltage VBAT is unadjusted and unsuitable as a power source for the load, a power management module converts the VBAT voltage to DC-DC, transforming it into a suitable power supply for the load. The power management module outputs V... DD Connected to the power supply of the infrared remote control system. When V OD2 When the output is high, the second NMOS switch Q2 is turned on. The VBAT output voltage is converted into the voltage required by the load through the power management module system, and the load system is activated. OD2 When the output is low, the second NMOS switch Q2 is turned off, and the power management module outputs V. DD The output is 0V, the load system is disconnected, thereby eliminating the standby power consumption of the infrared remote control system.

[0046] The infrared remote control system consists of four modules: a display screen, a button module, a digital signal processing and control module, and an infrared transmitter. When a button is pressed, the infrared remote control system is activated, and the corresponding signal is transmitted to the signal processing and control module, where it is converted into corresponding command information. The control module then transmits this information to the infrared transmitter and the display screen. After a period of time following the last press, the load is powered off, and the system automatically enters a shutdown state.

[0047] It should be noted that in the description of this invention, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0048] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this teaching should not be determined by reference to the above description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed inventive subject matter.

Claims

1. A battery-free infrared remote control system control device, characterized in that, This includes energy harvesting systems, zero-power triggering systems, and infrared remote control systems; The energy harvesting system includes a solar panel, a first voltage detection circuit, and an energy harvesting circuit. The solar panel is connected to the input terminal of the first voltage detection circuit, the output terminal of the first voltage detection circuit is connected to the output terminal of the energy harvesting circuit through a first pull-up resistor, the output terminal of the first voltage detection circuit is connected to the enable terminal of the energy harvesting circuit, the solar panel is also connected to the input terminal of the energy harvesting circuit, and the output terminal of the energy harvesting circuit is connected to an energy storage supercapacitor. The zero-power triggering system includes a piezoelectric thin film, a rectifier module, a second voltage detection circuit, a MOS switch, and a power management module. The piezoelectric film is connected to the rectifier module. The output terminal of the rectifier module is connected to the gate of the first MOS switch. The drain of the first MOS switch is connected to the output terminal of the energy harvesting circuit, and the source of the first MOS switch is connected to the positive terminal of the charging capacitor. The positive terminal of the charging capacitor is connected to the input terminal of the second voltage detection circuit. The output terminal of the second voltage detection circuit is connected to the output terminal of the energy harvesting module through the second pull-up resistor, and is also connected to the gate of the second MOS switch. The drain of the second MOS switch is connected to the output terminal of the energy harvesting module, and the source of the second MOS switch is connected to the input terminal of the power management module. The output of the power management module provides voltage for the infrared remote control system. The infrared remote control system includes a button module, a signal processing and control module, and a display screen. The button module, the signal processing and control module, and the display screen are electrically connected in sequence. The signal processing and control module is also connected to a signal transmitter. The output terminal of the energy harvesting circuit is connected to the positive terminal of the energy storage supercapacitor, and the negative terminal of the energy storage supercapacitor and the negative terminal of the voltage detection circuit are both connected to the ground terminal.

2. The control device for the battery-free infrared remote control system according to claim 1, characterized in that, The output terminal of the power management module is connected to the positive terminal of the infrared remote control system, and the negative terminals of both the infrared remote control system and the power management module are connected to the ground terminal; the negative terminal of the charging capacitor is grounded.

3. The control device for the battery-free infrared remote control system according to claim 1, characterized in that, Both the first MOS switch and the second MOS switch are NMOS switches.

4. The control method of the battery-free infrared remote control system control device according to any one of claims 1 to 3, characterized in that, Includes the following steps: The voltage detection circuit detects the voltage of the solar panel; When the voltage output by the solar panel is lower than the threshold of the first voltage detection circuit, the energy harvesting circuit enters the shutdown state; the zero-power triggering system automatically shuts down the infrared remote control system. When the voltage output by the solar panel is higher than the threshold of the first voltage detection circuit, the first voltage detection circuit enables the energy harvesting circuit to work; the zero-power triggering system automatically connects the infrared remote control system to supply power to the infrared remote control system.

5. The method according to claim 4, characterized in that, When the input voltage of the voltage detection circuit is lower than the threshold of the first voltage detection circuit, the output of the voltage detection circuit remains at a low level; the energy harvesting circuit enters the shutdown state; the zero-power triggering system automatically shuts down the infrared remote control system. When the voltage is higher than the threshold of the first voltage detection circuit, the output of the voltage detection circuit is switched to a high level and the voltage to the input is kept lower than the drop threshold of the voltage detection circuit; the output of the voltage detection circuit is high, the energy harvesting circuit is enabled; the zero-power triggering system automatically connects the infrared remote control system. The power management module of the zero-power triggering system converts the voltage to DC to power the infrared remote control system.

6. The method according to claim 4, characterized in that, The zero-power triggering system can eliminate the original standby power consumption of the remote control system. The system monitors the action of pressing the button, and pressing the button will activate the entire load system. Pressing the piezoelectric film converts the AC power output by the piezoelectric film into DC power. When the output voltage of the rectifier module is higher than the threshold of the first NMOS switch, the first NMOS switch is turned on, and the charging capacitor starts to charge. When the pressing action ends, the charging capacitor stops charging. After the charging is finished, the charging capacitor will slowly leak current. When the voltage of the charging capacitor is higher than the threshold of the second voltage detection circuit, the output of the second voltage detection circuit is high; when the voltage of the charging capacitor is lower than the threshold of the second voltage detection circuit, the output of the second voltage detection circuit is low. When the output of the second voltage detection circuit is high, the second NMOS switch is turned on, and the zero-power triggering system automatically turns on the infrared remote control system to supply power to the infrared remote control system. When the output of the second voltage detection circuit is low, the second NMOS switch is turned off, and the zero-power triggering system automatically shuts down the infrared remote control system.

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