Infrared emission driving circuit, infrared emission equipment and infrared control system

Abstract

The utility model provides an infrared emission driving circuit. The infrared emission driving circuit comprises a main control chip, an adjustable power supply, a plurality of infrared emission tubes and a plurality of switching circuits in one-to-one correspondence with the plurality of infrared emission tubes, the main control chip is electrically connected with the input end of the adjustable power supply, and the plurality of infrared transmitting tubes are electrically connected with the output end of the adjustable power supply; the main control chip outputs a modulation signal to the adjustable power supply, so that the adjustable power supply generates an output voltage to the plurality of infrared transmitting tubes, and the plurality of infrared transmitting tubes transmit infrared signals at corresponding power; the first pins of the plurality of switching circuits are electrically connected to the main control chip respectively, and the second pins of the plurality of switching circuits are electrically connected to the corresponding infrared transmitting tubes respectively; the main control chip outputs a control signal to the plurality of switching circuits to control the on-off of each switching circuit, and further drives the infrared transmitting tube corresponding to each switching circuit to transmit or stop transmitting the infrared signal. In addition, the utility model also provides an infrared emission device and an infrared control system.

Description

Technical Field

[0001] This application relates to the field of infrared communication technology, and particularly to an infrared emission driving circuit, an infrared emission device, and an infrared control system. Background Art

[0002] A traditional infrared emission driving circuit generally consists of a constant-voltage DC power supply, an infrared emission tube, a current-limiting resistor, and a switching circuit (usually a triode or a field-effect transistor) connected in series. The voltage provided by the constant-voltage DC power supply of the traditional infrared emission driving circuit is generally a constant value. Therefore, the power during the operation of this infrared emission driving circuit is a non-adjustable fixed value. Since the transmission distance of an infrared signal is mainly affected by power, it can be considered that the transmission distance of the infrared signal is also fixed when the power is constant.

[0003] Infrared emission driving circuits are mainly applied to infrared emission devices. Suppose there are infrared emission devices and multiple infrared receiving devices in a large public space, and the distances between different infrared receiving devices and the infrared transmitting device are different. If the power of the infrared transmitting device is too small, the infrared signal is not easily received by the target infrared receiving device at a distance. If the power of the infrared transmitting device is too large, it is easy to control infrared receiving devices other than the target, that is, it is easy to fail to control the target device or miscontrol devices other than the target. Therefore, it is necessary for people to manually move the infrared transmitting device to a suitable position, which is time-consuming and laborious. And because the traditional infrared emission driving circuit cannot flexibly adjust the signal coverage range, in order to avoid the above problems, multiple infrared emission devices are required to achieve infrared signal coverage for all infrared receiving devices in the entire space, so the cost is relatively high. Summary of the Utility Model

[0004] In view of this, this application provides an infrared emission driving circuit, an infrared emission device, and an infrared control system that can flexibly adjust the infrared signal coverage range and have a relatively low cost.

[0005] In a first aspect, this application provides an infrared emission driving circuit, which includes: a main control chip, an adjustable power supply, multiple infrared emission tubes, and multiple switching circuits corresponding to the multiple infrared emission tubes one by one; the main control chip is electrically connected to the input end of the adjustable power supply, and the multiple infrared emission tubes are all electrically connected to the output end of the adjustable power supply; the main control chip outputs a modulation signal to the adjustable power supply to enable the adjustable power supply to generate a corresponding output voltage to the multiple infrared emission tubes, so that the multiple infrared emission tubes emit infrared signals with corresponding powers;

[0006] Each of the multiple switch circuits includes a first pin and a second pin. The first pins of the multiple switch circuits are electrically connected to the main control chip respectively, and the second pins of the multiple switch circuits are electrically connected to corresponding infrared emitting diodes respectively. The main control chip outputs control signals to the multiple switch circuits respectively, so as to independently control the on / off of each switch circuit, and further drive the infrared emitting diodes corresponding to each switch circuit to emit or stop emitting the infrared signals.

[0007] Further, the modulation signal is a PWM signal with a variable duty cycle. The main control chip changes the output voltage of the adjustable power supply by adjusting the duty cycle of the PWM signal, so as to change the power of the multiple infrared emitting diodes, and further change the transmission distance of the infrared signals.

[0008] Further, the infrared emission driving circuit further includes a plurality of current limiting resistors. Each current limiting resistor is connected in series between each infrared emitting diode and the corresponding switch circuit to limit the magnitude of the current flowing into each infrared emitting diode.

[0009] Further, the anodes of the multiple infrared emitting diodes are electrically connected to the output terminal of the adjustable power supply, and the cathodes of the multiple infrared emitting diodes are electrically connected to the corresponding switch circuits through the multiple current limiting resistors.

[0010] Further, each of the multiple switch circuits includes a third pin, and the third pin of each switch circuit is grounded.

[0011] Further, the switch circuit is a triode or a field effect transistor.

[0012] Further, when the control signal is at a high level, the switch circuit is turned on, and further drives the infrared emitting diode corresponding to each switch circuit to emit the infrared signal; when the control signal is at a low level, the switch circuit is turned off, and further drives the infrared emitting diode corresponding to each switch circuit to stop emitting the infrared signal.

[0013] Further, the multiple infrared emitting diodes have different emission angles.

[0014] In a second aspect, the present application provides an infrared emission device, and the infrared emission device applies the infrared emission driving circuit.

[0015] In a third aspect, the present application provides an infrared control system, and the infrared control system includes:

[0016] The infrared emission device, configured to emit infrared signals; and a plurality of infrared receiving devices, and the plurality of infrared receiving devices receive the infrared signals.

[0017] The above-mentioned infrared emission driving circuit, infrared emission device, and infrared control system use an adjustable power supply with an adjustable output voltage to supply power to the infrared emission tube, and use the main control chip to output a modulation signal to the adjustable power supply. By adjusting the modulation signal, the output voltage of the adjustable power supply is changed, thereby changing the transmission distance of the infrared signal emitted by the infrared emission tube. Furthermore, the infrared signal coverage range of the infrared emission device can be flexibly adjusted as needed, and the infrared receiving device can be more precisely controlled, effectively reducing the miscontrol phenomenon while reducing costs. In addition, in this application, multiple infrared emission tubes are connected in parallel, and the main control chip controls the on / off of multiple switch circuits corresponding to the multiple infrared emission tubes respectively, so as to realize independently controlling each infrared emission tube to emit or stop emitting infrared signals. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0019] Figure 1 It is a schematic structural diagram of an infrared emission driving circuit provided by an embodiment of the present application.

[0020] Figure 2 It is a schematic structural diagram of an infrared emission driving circuit provided by another embodiment of the present application.

[0021] Figure 3 It is a schematic structural diagram of an infrared control system provided by an embodiment of the present application.

[0022] Explanation of the Reference Symbols of the Drawings

[0023] Infrared emission driving circuit 1 First pin 151

[0024] Main control chip 11 Second pin 152

[0025] Adjustable power supply 12 Third pin 153

[0026] Infrared emission tube 13 Infrared emission device 100

[0027] Current-limiting resistor 14 Infrared receiving device 200

[0028] Switch circuit 15 Infrared control system 1000

[0029] The realization of the purpose of the present application, functional features, and advantages will be further described in conjunction with the embodiments with reference to the drawings. Detailed Embodiments

[0030] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0031] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar planned objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances. In other words, the described embodiments are implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof can also include other contents. For example, a process, method, system, product or device including a series of steps or units does not necessarily need to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0032] It should be noted that the descriptions involving "first", "second", etc. in the present application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0033] Please refer to Figure 3 , Figure 3 which is a schematic structural diagram of an infrared control system provided by an embodiment of the present application. The present application provides an infrared control system 1000. The infrared control system 1000 includes an infrared transmitting device 100 and a plurality of infrared receiving devices 200. The distances between the infrared transmitting device 100 and the plurality of infrared receiving devices 200 are different. The infrared transmitting device 100 in the present application can emit an infrared signal corresponding to the distance according to the distance between the infrared transmitting device 100 and the plurality of infrared receiving devices 200. That is to say, the present application can flexibly adjust the coverage range of the infrared signal of the infrared transmitting device 100 as needed and more precisely control the infrared receiving device 200, effectively reducing the phenomenon of miscontrol.

[0034] In this embodiment, the infrared transmitting device 100 applies the infrared transmitting drive circuit 1, so that the infrared transmitting device 100 can emit infrared signals with adjustable transmission distances through the infrared transmitting drive circuit 1. The infrared receiving device 200 is located within the infrared signal coverage range of the infrared transmitting device 100 and is used to receive the infrared signals emitted by the infrared transmitting device 100 and convert them into recognizable signals (usually electrical signals). The infrared receiving device 200 can be household appliances (such as TVs, air conditioners, stereos, etc.), industrial machines (such as production equipment, detection equipment, logistics equipment, etc.), and medical devices (such as infrared spectrometers, infrared therapeutic devices, etc.), which are not limited herein. In addition, the infrared signals of the infrared transmitting device 100 can be omnidirectional coverage (360°) or non-omnidirectional coverage (such as 60°, 90°, 180°, etc.), which are not limited herein. The specific structure of the infrared transmitting drive circuit 1 will be further introduced below.

[0035] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of an infrared transmitting drive circuit provided in an embodiment of the present application. The present application provides an infrared transmitting drive circuit 1, which is sequentially provided with a main control chip 11, an adjustable power supply 12, a plurality of infrared emitting diodes 13, a plurality of current limiting resistors 14, and a plurality of switch circuits 15. The main control chip 11 is used to regulate the output voltage magnitude of the adjustable power supply 12, and the adjustable power supply 12 is used to supply power to the plurality of infrared emitting diodes 13. The plurality of switch circuits 15 correspond to the plurality of infrared emitting diodes 13 one by one and are used to control the plurality of infrared emitting diodes 13 to turn on or off. The plurality of current limiting resistors 14 are respectively connected in series between each infrared emitting diode 13 and the corresponding switch circuit 15 to limit the magnitude of the current flowing into each infrared emitting diode 13, thereby preventing the infrared emitting diode 13 from being damaged due to excessive current. In addition, in the present application, an adjustable power supply 12 with an adjustable output voltage magnitude is used to replace the traditional regulated power supply to supply power to the infrared emitting diodes 13, so that the infrared emitting diodes 13 emit infrared signals with adjustable transmission distances.

[0036] The input end of the adjustable power supply 12 is electrically connected to the main control chip 11, and the output end of the adjustable power supply 12 is electrically connected to one end of multiple infrared emitting diodes 13. When an infrared signal with a preset transmission distance needs to be emitted, the main control chip 11 outputs a modulation signal corresponding to the preset transmission distance to the adjustable power supply 12, so that the adjustable power supply 12 generates an output voltage of a corresponding magnitude to the multiple infrared emitting diodes 13, and further enables the multiple infrared emitting diodes 13 to emit infrared signals capable of transmitting the preset transmission distance at a corresponding power. In this embodiment, the modulation signal is a PWM signal with a variable duty cycle, and the main control chip 11 adjusts the duty cycle of the PWM signal to change the output voltage of the adjustable power supply 12, thereby changing the power of the multiple infrared emitting diodes 13 and further changing the transmission distance of the infrared signal. That is to say, when the target infrared receiving device 200 is not within the current infrared signal coverage range of the infrared transmitting device 100, the infrared transmitting device 100 of the present application can automatically adjust the infrared signal coverage range through the main control chip 11, so that the target infrared receiving device 200 is located within the infrared signal coverage range of the infrared transmitting device 100. That is, compared with manually adjusting the infrared transmitting device 100 and the target infrared receiving device 200 to make the target infrared receiving device 200 located within the infrared signal coverage range of the infrared transmitting device 100, the present application saves manpower and material resources.

[0037] The multiple infrared emitting diodes 13 include an anode and a cathode. The anodes of the multiple infrared emitting diodes 13 are all electrically connected to the output end of the adjustable power supply 12, and the cathode of each infrared emitting diode 13 is electrically connected to a corresponding switching circuit 15 through a corresponding current limiting resistor 14, so as to control the on / off of each infrared emitting diode 13 through the multiple switching circuits 15 respectively. In this embodiment, the multiple parallel infrared emitting diodes 13 have different emission angles. Specifically, the multiple infrared emitting diodes 13 can adopt different emission angles for different installation positions, so that the infrared signals emitted by the infrared emitting device 100 composed of the multiple infrared emitting diodes 13 cover all directions around. In addition, the multiple infrared emitting diodes 13 can also emit infrared signals of different wavelengths, so that the infrared emitting device 100 can adapt to more diverse application scenario requirements. It can be understood that the present application increases the coverage range of the infrared signal by connecting multiple infrared emitting diodes 13 in parallel. Compared with increasing the coverage range of the infrared signal by adding multiple infrared emitting devices 100, the efficiency is improved and the cost is saved.

[0038] The multiple switch circuits 15 each include a first pin 151, a second pin 152, and a third pin 153. Among them, the first pins 151 of the multiple switch circuits 15 are respectively electrically connected to the main control chip 11, the second pins 152 of the multiple switch circuits 15 are respectively electrically connected to the corresponding infrared emitting diodes 13, and the third pins 153 of the multiple switch circuits 15 are all grounded. The main control chip 11 outputs control signals to the multiple switch circuits 15 respectively, thereby driving the infrared emitting diodes 13 corresponding to each switch circuit 15 to emit or stop emitting infrared signals. In this embodiment, the main control chip 11 includes multiple modulation pins for outputting PWM signals, and the multiple modulation pins are electrically connected to the first pins 151 of the switch circuits 15 one by one (as Figure 1 shown), so that the main control chip 11 outputs different control signals to the multiple switch circuits 15 through the multiple modulation pins respectively, thereby independently controlling the on / off of each switch circuit 15, and further driving the infrared emitting diodes 13 corresponding to each switch circuit 15 to emit or stop emitting infrared signals.

[0039] Please refer to Figure 2 , Figure 2 which is a schematic structural diagram of an infrared emission driving circuit provided by another embodiment of the present application. In some other feasible embodiments, the main control chip 11 may also be electrically connected to the multiple switch circuits 15 through only one modulation pin (as Figure 2 shown), so that the main control chip 11 outputs a control signal to the multiple switch circuits 15 through one modulation pin, thereby centrally controlling the on / off of the multiple switch circuits 15, and further driving the infrared emitting diodes 13 corresponding to the multiple switch circuits 15 to emit or stop emitting infrared signals simultaneously.

[0040] The multiple switch circuits 15 are triodes or field effect transistors. Taking the switch circuit 15 as a triode as an example for illustration. Specifically, the first pin 151 of the multiple switch circuits 15 corresponds to the base of the triode, the second pin 152 of the multiple switch circuits 15 corresponds to the collector of the triode, and the third pin 153 of the multiple switch circuits 15 corresponds to the emitter of the triode. When the control signal input from the main control chip 11 to the switch circuit 15 is at a high level, the switch circuit 15 is turned on, and the infrared emitting diode 13 corresponding to the switch circuit 15 is turned on, thereby driving the infrared emitting diode 13 to emit infrared signals; when the control signal input from the main control chip 11 to the switch circuit 15 is at a low level, the switch circuit 15 is turned off, and the infrared emitting diode 13 corresponding to the switch circuit 15 is turned off, thereby causing the infrared emitting diode 13 to stop emitting infrared signals.

[0041] In the above embodiments, an adjustable power supply 12 with an adjustable output voltage is used to supply power to the infrared emitting diode 13, and the main control chip 11 outputs a modulation signal to the adjustable power supply 12. By adjusting the modulation signal, the output voltage of the adjustable power supply 12 is changed, thereby changing the transmission distance of the infrared signal emitted by the infrared emitting diode 13. Furthermore, the coverage range of the infrared signal can be flexibly adjusted as needed, and the infrared receiving device 200 can be more precisely controlled, effectively reducing the phenomenon of miscontrol while reducing costs. In addition, in this application, multiple infrared emitting diodes 13 are connected in parallel, and the main control chip 11 controls the on / off of multiple switch circuits 15 corresponding to the multiple infrared emitting diodes 13 respectively, so as to achieve independent control of each infrared emitting diode 13 to emit or stop emitting infrared signals.

[0042] The above are only the preferred embodiments of the present invention, but do not limit the patent scope of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure made by using the content of the specification and drawings of the present invention, directly or indirectly applied in other related technical fields, is equally within the scope of the patent protection of the present invention.

Claims

1. An infrared emission driving circuit, characterized in that, The infrared emission driving circuit includes: a main control chip, an adjustable power supply, a plurality of infrared emission tubes, and a plurality of switching circuits corresponding to the plurality of infrared emission tubes one by one; the main control chip is electrically connected to the input end of the adjustable power supply, and the plurality of infrared emission tubes are all electrically connected to the output end of the adjustable power supply; the main control chip outputs a modulation signal to the adjustable power supply, so that the adjustable power supply generates a corresponding output voltage to the plurality of infrared emission tubes, and further enables the plurality of infrared emission tubes to emit infrared signals with corresponding power. The plurality of switching circuits each include a first pin and a second pin. The first pins of the plurality of switching circuits are respectively electrically connected to the main control chip, and the second pins of the plurality of switching circuits are respectively electrically connected to the corresponding infrared emission tubes; the main control chip respectively outputs control signals to the plurality of switching circuits, thereby individually controlling the on / off of each switching circuit, and further driving the infrared emission tube corresponding to each switching circuit to emit or stop emitting the infrared signal.

2. The infrared emission driving circuit according to claim 1, wherein The modulation signal is a PWM signal with a variable duty cycle. The main control chip changes the output voltage of the adjustable power supply by adjusting the duty cycle of the PWM signal, thereby changing the power of the plurality of infrared emission tubes, and further changing the transmission distance of the infrared signal.

3. The infrared emission driving circuit according to claim 1, wherein The infrared emission driving circuit further includes a plurality of current-limiting resistors, and each current-limiting resistor is connected in series between each infrared emission tube and the corresponding switching circuit to limit the magnitude of the current flowing into each infrared emission tube.

4. The infrared emission driving circuit according to claim 3, wherein The anodes of the plurality of infrared emission tubes are all electrically connected to the output end of the adjustable power supply, and the cathodes of the plurality of infrared emission tubes are electrically connected to the corresponding switching circuits through the plurality of current-limiting resistors.

5. The infrared emission driving circuit according to claim 1, characterized in that The plurality of switching circuits each include a third pin, and the third pin of each switching circuit is grounded.

6. The infrared emission driving circuit according to claim 1, characterized in that The switching circuit is a triode or a field effect transistor.

7. The infrared emission driving circuit according to claim 6, wherein When the control signal is at a high level, the switching circuit is turned on, and further drives the infrared emission tube corresponding to each switching circuit to emit the infrared signal; when the switching circuit is at a low level, the switching circuit is turned off, and further drives the infrared emission tube corresponding to each switching circuit to stop emitting the infrared signal.

8. The infrared emission driving circuit according to claim 1, wherein The plurality of infrared emission tubes have different emission angles.

9. An infrared emission device, characterized in that, The infrared emission device applies the infrared emission driving circuit according to any one of claims 1-8.

10. An infrared control system, characterized in that, The infrared control system includes: The infrared emission device according to claim 9, for emitting infrared signals; and A plurality of infrared receiving devices, and the plurality of infrared receiving devices receive the infrared signals.

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