Infrared induction driving method, disinfectant machine and electronic equipment

Abstract

The application belongs to the technical field of infrared detection, and provides an infrared induction driving method, a disinfectant machine and electronic equipment. A first voltage sampling signal is obtained by sampling an infrared receiving tube, then the infrared receiving tube is sampled after the infrared transmitting tube transmits a plurality of pulse infrared signals to obtain a second voltage sampling signal, the voltage difference between the second voltage sampling signal and the first voltage sampling signal is calculated, if the voltage difference is greater than a preset threshold voltage, an induction driving signal is generated, so that the voltage difference is used as the basis for triggering the infrared signal, most of the interference signals are filtered out, the infrared triggering abnormal event is greatly reduced, and the user experience is improved.

Description

Technical Field

[0001] This application belongs to the field of infrared detection technology, and in particular relates to an infrared sensing driving method, a disinfectant dispenser, and electronic equipment. Background Technology

[0002] Currently, infrared sensor products on the market (such as infrared disinfectant dispensers) only perform conventional software threshold level or AD detection. This makes infrared sensor products susceptible to interference from rapid changes in white light intensity (including infrared spectrum) caused by bathroom light switches when used in the bathroom. This can lead to false triggering of infrared sensors, wasting disinfectant and causing disinfectant water to spray intermittently from the bathroom sink, which greatly affects the user experience.

[0003] On the other hand, infrared sensor products (such as infrared disinfectant dispensers) do not control the power supply to the infrared receiver and transmitter during standby and infrared operation intervals (when not transmitting infrared codes), but instead use direct power supply. This means that when the infrared is not activated during standby, if the background white light (including the infrared spectrum) is strong, the infrared receiver will continuously sense the infrared spectrum, causing the receiving circuit to operate frequently and generating additional power consumption. This greatly reduces the battery life and affects the user experience. Summary of the Invention

[0004] The purpose of this application is to provide an infrared sensing driving method, a disinfectant dispenser, and an electronic device, which aims to solve the problem that current disinfectant dispensers are easily affected by white light interference, leading to triggering abnormalities.

[0005] A first aspect of this application provides an infrared sensing driving method, the infrared sensing driving method comprising:

[0006] The first voltage sampling signal is obtained by sampling the infrared receiver tube;

[0007] After controlling the infrared emitting tube to emit multiple pulse infrared signals, the infrared receiving tube is sampled to obtain a second voltage sampling signal;

[0008] Calculate the voltage difference between the second voltage sampling signal and the first voltage sampling signal. If the voltage difference is greater than a preset threshold voltage, then generate an induction drive signal.

[0009] In one embodiment, after controlling the infrared emitting tube to emit multiple pulsed infrared signals, the infrared receiving tube is sampled to obtain a second voltage sampling signal, including:

[0010] Set the interval transmission time of the pulsed infrared signal, and transmit multiple pulsed infrared signals at the interval transmission time;

[0011] The infrared receiver is sampled to obtain multiple digital infrared sampling signals, and the multiple infrared sampling signals are converted into the second voltage sampling signal.

[0012] In one embodiment, the second voltage sampling signal is an analog voltage signal;

[0013] The digital infrared sampling signal is a digital frequency signal.

[0014] In one embodiment, the number of digital infrared sampling signals is the same as the number of pulsed infrared signals.

[0015] In one embodiment, the interval transmission time is greater than the period of the digital frequency signal.

[0016] In one embodiment, the infrared sensing driving method further includes:

[0017] The system detects whether a trigger signal is received. If a trigger signal is received, power is supplied to the infrared receiver and the infrared transmitter. If no trigger signal is received, power is cut off to the infrared receiver and the infrared transmitter.

[0018] In one embodiment, the infrared sensing driving method further includes:

[0019] The motor is driven to work according to the inductive drive signal.

[0020] In one embodiment, the infrared sensing driving method further includes:

[0021] A display signal is generated based on the induction drive signal.

[0022] A second aspect of this application also provides a disinfectant dispenser, comprising: a disinfectant device; and a sensing control device, the sensing control device being configured to execute the infrared sensing driving method as described in any of the preceding claims to control the disinfectant device to spray disinfectant.

[0023] A third aspect of this application also provides an electronic device, including: a motor; and a motor drive device, the motor drive device being configured to perform the infrared sensing drive method as described in any of the preceding claims to drive the motor to operate.

[0024] The beneficial effects of this application embodiment are as follows: A first voltage sampling signal is obtained by sampling the infrared receiving tube, and then the infrared emitting tube is controlled to emit multiple pulse infrared signals. After that, the infrared receiving tube is sampled to obtain a second voltage sampling signal. The voltage difference between the second voltage sampling signal and the first voltage sampling signal is calculated. If the voltage difference is greater than a preset threshold voltage, an induction drive signal is generated. Thus, the voltage difference is used as the basis for whether to trigger the infrared signal. Based on this, most interference signals are filtered out, greatly reducing infrared triggering abnormal events and improving the user experience. Attached Figure Description

[0025] Figure 1 This application provides an illustration of an infrared sensing driving method. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of step S200 in an infrared sensing driving method provided in an embodiment of this application;

[0027] Figure 3 This application provides an illustration of an infrared sensing driving method. Figure 2 ;

[0028] Figure 4 This application provides an illustration of an infrared sensing driving method. Figure 3 ;

[0029] Figure 5 This application provides an illustration of an infrared sensing driving method. Figure 4 . Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0031] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0034] Infrared sensor products (such as infrared disinfectant dispensers) only perform conventional software threshold level or AD detection. This makes them susceptible to interference from rapid changes in white light intensity (including infrared spectrum) caused by bathroom light switches when used in the bathroom. This interference can lead to false triggering of the infrared sensor, wasting disinfectant and causing the bathroom sink to spray disinfectant water intermittently, which greatly affects the user experience.

[0035] On the other hand, infrared sensor products (such as infrared disinfectant dispensers) do not control the power supply to the infrared receiver and transmitter during standby and infrared operation intervals (when not transmitting infrared codes), instead using direct power supply. This means that when the infrared signal is not activated in standby mode, a strong background white light (including the infrared spectrum) will cause the infrared receiver to continuously sense the infrared spectrum, leading to frequent operation of the receiving circuit and additional power consumption. Furthermore, infrared receiving circuits often use a direct 38.4kHz digital signal acquisition frequency, requiring a high MCU sampling rate (signal period of 26µs). This necessitates a dedicated MCU with a hardware frequency capture port, posing a challenge for high-cost consumer products like ordinary disinfectant dispensers that require low-cost MCUs. This significantly reduces battery life, impacting the user experience.

[0036] To address the aforementioned technical problems, enhance market competitiveness, and meet customer needs, this application provides an infrared sensing driving method, see [link to relevant documentation]. Figure 1 As shown, the infrared sensing driving method in this embodiment includes steps S100 to S300.

[0037] In step S100, the infrared receiver is sampled to obtain the first voltage sampling signal.

[0038] Before the infrared emitting tube emits a pulsed infrared signal, the infrared receiving tube is sampled to obtain a first voltage sampling signal, which is an analog signal.

[0039] In step S200, after controlling the infrared emitting tube to emit multiple pulse infrared signals, the infrared receiving tube is sampled to obtain a second voltage sampling signal.

[0040] In this embodiment, by controlling the infrared emitting tube to emit multiple pulsed infrared signals, and then acquiring the voltage signal of the infrared receiving tube, a second voltage sampling signal with an analog signal type is obtained.

[0041] In step S300, the voltage difference between the second voltage sampling signal and the first voltage sampling signal is calculated. If the voltage difference is greater than a preset threshold voltage, an induction drive signal is generated.

[0042] In this embodiment, the voltage difference between the second voltage sampling signal and the first voltage sampling signal is calculated, and then the voltage difference is compared with a preset threshold voltage. If the voltage difference is greater than the preset threshold voltage, a corresponding induction drive signal is generated.

[0043] In this embodiment, by sampling the infrared receiver before and after the infrared transmitter emits a pulsed infrared signal, a first voltage sampling signal and a second voltage sampling signal are obtained. Then, by comparing the voltage difference, normal triggering of infrared detection and identification of white light interference are performed. This can prevent the infrared signal in white light from falsely triggering the infrared receiver, solve the problem that infrared transistor sensing products are easily interfered with by white light during use, and improve the user experience.

[0044] In one embodiment, see Figure 2 As shown, in step S200, after controlling the infrared emitting tube to emit multiple pulse infrared signals, the infrared receiving tube is sampled to obtain a second voltage sampling signal, including steps S210 and S220.

[0045] In step S210, the interval transmission time of the pulse infrared signal is set, and multiple pulse infrared signals are transmitted at the interval transmission time.

[0046] In this embodiment, after power-on, the interval transmission time of the pulse infrared signal is set, or multiple pulse infrared signals are transmitted using the default interval transmission time. Each pulse infrared signal can consist of one or more consecutive pulse signals.

[0047] In step S220, the infrared receiver is sampled to obtain multiple digital infrared sampling signals, and the multiple infrared sampling signals are converted into the second voltage sampling signal.

[0048] Since the infrared receiver tube is opposite the infrared emitter tube, the infrared receiver tube senses multiple pulse infrared signals and generates corresponding voltage changes based on these signals. This results in multiple digital infrared sampling signals after sampling the infrared receiver tube. Since the pulse infrared signal is a square wave signal, the digital infrared sampling signal is also a square wave signal. After processing the square wave signal through an RC circuit, the digital infrared sampling signal is converted into a second analog voltage sampling signal. This allows the first and second analog voltage sampling signals to be used to determine whether the infrared receiver tube is triggered normally or by interference by calculating their voltage difference.

[0049] In one embodiment, the second voltage sampling signal is an analog voltage signal, and the digital infrared sampling signal is a digital frequency signal.

[0050] In this embodiment, the digital infrared sampling signal is a digital frequency signal in the form of a square wave, the second voltage sampling signal is an analog voltage signal, the infrared receiving tube senses the pulse infrared signal, and uses the capacitance characteristics of the infrared receiving tube and the resistor connected to the infrared receiving tube to charge and discharge, thereby converting the digital infrared sampling signal into a second voltage sampling signal in the form of an analog voltage signal.

[0051] In one embodiment, the infrared receiver tube may be of model HPT603P.

[0052] In one embodiment, the infrared emitting tube may be of the model HIR303A112CP.

[0053] In this embodiment, the parasitic capacitance and resistance charging and discharging characteristics of the infrared receiver tube are used to convert the 38.4KHZ digital frequency signal into an analog voltage signal. The voltage difference between the analog signal before and after the infrared transmitter is used to determine whether it is a normal trigger signal or an interference signal, so as to filter out interference, avoid false infrared triggering, and improve the user experience. This design method greatly reduces the selection requirements of the main control unit (MCU), and only a low-cost chip with AD function is required, which reduces the product development cost.

[0054] In one embodiment, the number of digital infrared sampling signals is the same as the number of pulsed infrared signals.

[0055] In one embodiment, there are 7 pulse infrared signals. When the infrared emitting tube emits multiple pulse infrared signals, the infrared receiving tube will sense multiple pulse infrared signals and generate corresponding voltage changes according to the multiple pulse infrared signals, thereby obtaining multiple digital infrared sampling signals after sampling the infrared receiving tube.

[0056] In one embodiment, the interval transmission time is greater than the period of the digital frequency signal.

[0057] In one embodiment, the interval transmission time can be 310ms.

[0058] In one embodiment, the frequency of the digital frequency signal is 38.4 kHz.

[0059] In this embodiment, the infrared emitting diode can be turned on and off by a digital frequency signal with a frequency of 38.4KHz, so that the infrared emitting diode emits a pulse infrared signal of the corresponding frequency. After emitting a pulse infrared signal, the infrared emitting diode emits a pulse infrared signal again after an interval of time. This process is repeated so that the infrared receiving diode can sense multiple pulse infrared signals. Similarly, multiple pulse infrared signals can be converted into multiple analog voltage signals.

[0060] In one embodiment, the second voltage sampling signal includes a plurality of analog voltage signals, the voltage value of which can be the maximum voltage value among the plurality of analog voltage signals.

[0061] In one embodiment, since both the second voltage sampling signal and the first voltage sampling signal are analog voltage signals, their voltage difference is also an analog voltage signal. The trigger time when the voltage difference is greater than a preset threshold voltage during the period when the infrared emitting tube emits multiple pulse infrared signals is calculated. If the trigger time is greater than the preset time threshold, it is determined to be a normal trigger, and an induction drive signal is generated.

[0062] In one embodiment, the voltage difference between the second voltage sampling signal and the first voltage sampling signal is calculated during the period when the infrared emitting tube emits multiple pulse infrared signals, and a voltage curve is generated based on multiple consecutive voltage differences. The voltage curve is compared with a preset voltage curve. If the voltage curve is consistent with the preset voltage curve, it is determined that the infrared receiving tube is normally triggered and an induction drive signal is generated.

[0063] In one embodiment, see Figure 3 As shown, the infrared sensing driving method in this embodiment further includes step S400.

[0064] In step S400, it is detected whether a trigger signal is received. If a trigger signal is received, power is supplied to the infrared receiver and the infrared transmitter. If no trigger signal is received, the infrared receiver and the infrared transmitter are powered off.

[0065] In this embodiment, a receiving switch can be set between the infrared receiver and the power supply, and a transmitting switch can be set between the infrared transmitter and the power supply. When a trigger signal is received, the receiving switch and the transmitting switch are closed, and the infrared receiver and the infrared transmitter are powered on. When no trigger signal is received, the infrared receiver and the infrared transmitter are powered off.

[0066] In one embodiment, the trigger signal can be generated by a touch button. When the whole machine is powered on, if the touch button is not pressed, that is, when the system is not powered on and is in standby mode, the system main controller will set the trigger signal to high level output by default, the receive switch and the transmit switch will be turned off, thereby turning off the power supply of the infrared receiver and the infrared transmitter.

[0067] In one embodiment, when the system is powered on by pressing the touch button during standby, the system main controller sets the trigger signal to a high level output within the interval transmission time (e.g., 310ms), disconnects the receive switch and the transmit switch, and thus turns off the power to the infrared receiver and infrared transmitter.

[0068] In the above embodiments, by adding a switching power supply circuit (e.g., a receiver switch and a transmitter switch), the power supply of the infrared receiver and infrared transmitter is turned off in a timely manner when the infrared transmitter is in a non-coding state during standby and power-on. For most of the time, even when the infrared receiver circuit is interfered with by white light, the infrared receiver will not be triggered by infrared sensing and cause additional power consumption, thus achieving the purpose of saving energy and greatly improving battery life.

[0069] In one embodiment, see Figure 4 As shown, the infrared sensing driving method in this embodiment further includes step S500.

[0070] In step S500, the motor is driven to work according to the induction drive signal.

[0071] In this embodiment, by outputting the induction drive signal to the motor, the induction drive signal controls the on / off of the motor power supply, or drives the motor to work, thus diversifying the application scenarios of infrared sensing. For example, in disinfection products, the induction drive signal controls the motor, thereby controlling the spraying of disinfectant spray liquid.

[0072] In one specific application embodiment, when the sensing drive signal is high, the motor starts and begins to spray disinfectant; when the sensing drive signal is low, the motor stops running and stops spraying disinfectant.

[0073] In one embodiment, see Figure 5 As shown, the infrared sensing driving method in this embodiment further includes step S600.

[0074] In step S600, a display signal is generated based on the sensing drive signal.

[0075] In this embodiment, the infrared sensing result is displayed by outputting a sensing drive signal to a display device, which then generates a display signal based on the sensing drive signal.

[0076] This application also provides a disinfectant dispenser, including: a disinfectant device; and a sensing control device, the sensing control device being used to execute the infrared sensing driving method as described in any of the above claims to control the disinfectant device to spray disinfectant.

[0077] In this embodiment, the sensing control device executes the infrared sensing drive method as described in any of the above embodiments to detect whether the disinfectant spraying switch is triggered, and generates a corresponding sensing drive signal when the triggering action is detected, thereby driving the disinfectant device to spray disinfectant.

[0078] This application also provides an electronic device, including: a motor; and a motor drive device, the motor drive device being used to execute the infrared sensing drive method as described in any of the above embodiments to drive the motor to work.

[0079] In this embodiment, the electronic device can be a disinfectant dispenser product, but it is not limited to disinfectant dispenser products. For example, it can be any product used with infrared emitting tubes and infrared receiving tubes. For example, the electronic device can be a baby feeding sensor faucet, an infrared sensor toilet flusher, etc.

[0080] The beneficial effects of this application embodiment are as follows: A first voltage sampling signal is obtained by sampling the infrared receiving tube, and then the infrared emitting tube is controlled to emit multiple pulse infrared signals. After that, the infrared receiving tube is sampled to obtain a second voltage sampling signal. The voltage difference between the second voltage sampling signal and the first voltage sampling signal is calculated. If the voltage difference is greater than a preset threshold voltage, an induction drive signal is generated. Thus, the voltage difference is used as the basis for whether to trigger the infrared signal. Based on this, most interference signals are filtered out, greatly reducing infrared triggering abnormal events and improving the user experience.

[0081] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0082] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0083] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0084] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0085] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. An infrared sensing driving method, characterized in that, The infrared sensing driving method, applied to infrared tube sensing products, includes: The first voltage sampling signal is obtained by sampling the infrared receiver tube; After controlling the infrared emitting tube to emit multiple pulse infrared signals, the infrared receiving tube is sampled to obtain a second voltage sampling signal; Calculate the voltage difference between the second voltage sampling signal and the first voltage sampling signal. If the voltage difference is greater than a preset threshold voltage, generate an induction drive signal. After the infrared emitting tube emits multiple pulsed infrared signals, the infrared receiving tube is sampled to obtain a second voltage sampling signal, including: Set the interval transmission time of the pulsed infrared signal, and transmit multiple pulsed infrared signals at the interval transmission time; The infrared receiver is sampled to obtain multiple digital infrared sampling signals, and the multiple infrared sampling signals are converted into a second voltage sampling signal; the infrared receiver is opposite to the infrared emitter, and the infrared receiver senses and generates multiple pulse infrared signals; the digital infrared sampling signal is a digital frequency signal; the interval transmission time is greater than the period time of the digital frequency signal; the digital infrared sampling signal is converted into an analog form of the second voltage sampling signal by an RC circuit. Both the second voltage sampling signal and the first voltage sampling signal are analog voltage signals. The voltage difference between the second voltage sampling signal and the first voltage sampling signal is an analog voltage signal. The trigger time when the voltage difference is greater than a preset threshold voltage during the period when the infrared emitting tube emits multiple pulse infrared signals is calculated. If the trigger time is greater than the preset time threshold, it is determined to be a normal trigger, and the induction drive signal is generated.

2. The infrared sensing driving method as described in claim 1, characterized in that, The number of digital infrared sampling signals is the same as the number of pulse infrared signals.

3. The infrared sensing driving method according to any one of claims 1-2, characterized in that, The infrared sensing driving method further includes: The system detects whether a trigger signal is received. If a trigger signal is received, power is supplied to the infrared receiver and the infrared transmitter. If no trigger signal is received, the power is cut off to the infrared receiver and the infrared transmitter.

4. The infrared sensing driving method according to any one of claims 1-2, characterized in that, The infrared sensing driving method further includes: The motor is driven to work according to the inductive drive signal.

5. The infrared sensing driving method according to any one of claims 1-2, characterized in that, The infrared sensing driving method further includes: A display signal is generated based on the induction drive signal.

6. A disinfectant dispenser, characterized in that, include: Disinfectant dispenser; And a sensing control device, the sensing control device being used to perform the infrared sensing driving method as described in any one of claims 1-5, to control the disinfectant device to spray disinfectant.

7. An electronic device, characterized in that, include: Electric motor; And a motor drive device, the motor drive device being used to perform the infrared sensing drive method as described in any one of claims 1-5 to drive the motor to work.

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