A touch-sensitive night light circuit

Abstract

This utility model discloses a touch-sensitive night light circuit, comprising: a pyroelectric detection module for detecting human activity and sending the human activity signal to a main control chip module; a photosensitive signal detection module for detecting whether a human body touches the sensing area and sending a trigger signal from the sensing area to the main control chip module; a main control chip module for receiving signals from the pyroelectric detection module and the photosensitive signal detection module, and determining whether to turn on the night light based on the signals from the pyroelectric detection module and the photosensitive signal detection module; and a night light control module for receiving control signals from the main control chip module and turning on the night light. This utility model achieves accurate recognition of human activity and touch through the dual sensing of the pyroelectric detection module and the photosensitive signal detection module.

Description

Technical Field

[0001] This utility model relates to the field of lighting devices, and in particular to a touch-sensitive night light circuit. Background Technology

[0002] The existing method of turning on night lights generally involves using a pyroelectric sensor to detect signals from the human body to control the light's brightness. Pyroelectric sensors use a dual-window differential method to detect moving human bodies, which cannot effectively detect static human bodies and is easily affected by ambient temperature; the higher the ambient temperature, the worse the detection effect. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing nightlights that are controlled by pyroelectric sensors and are prone to insensitive control, which affects normal use, and to provide a touch-sensitive nightlight circuit.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A touch-sensitive night light circuit includes:

[0006] The pyroelectric detection module is used to detect human activity and send the human activity signal to the main control chip module;

[0007] The photosensitive signal detection module is used to detect whether a human body touches the sensing area and send the trigger signal of the sensing area to the main control chip module;

[0008] The main control chip module is used to receive signals from the pyroelectric detection module and the photosensitive signal detection module, and to determine whether to turn on the night light based on the signals from the pyroelectric detection module and the photosensitive signal detection module.

[0009] The night light control module is used to receive control signals from the main control chip module and turn on the night light.

[0010] In this solution, human activity is first detected by a pyroelectric detection module. If a person approaches, a human activity signal is sent to the main control chip module. Then, a photosensitive signal detection module detects whether the person has touched the sensing area, thus realizing the photosensitive function. The main control chip module controls the night light control module to turn on the night light based on the signals from the pyroelectric and photosensitive signal detection modules. This design, through the joint detection of the pyroelectric and photosensitive signal detection modules, achieves precise control of the night light's activation, avoiding the insensitivity issues that can easily arise from using a single pyroelectric sensor to detect human signals to control the night light's on / off state.

[0011] Preferably, the pyroelectric detection module includes a pyroelectric sensor, a sensitivity setting circuit, and a time setting circuit, with the pyroelectric sensor connected to both the sensitivity setting circuit and the time setting circuit.

[0012] Preferably, the pyroelectric sensor includes a SENS pin, a TIME pin, and a REL pin. The SENS pin is connected to the sensitivity setting circuit, the TIME pin is connected to the time setting circuit, and the REL pin is connected to the main control chip module. The sensitivity setting circuit includes resistors R1, R8, and R11, and capacitor C6. One end of resistor R8 is connected to the SENS pin of the pyroelectric sensor, and the other end of resistor R8 is connected to one end of capacitor C6, one end of resistor R1, and one end of resistor R11. The other end of capacitor C6 is grounded, the other end of resistor R11 is grounded, and the other end of resistor R1 is connected to the power supply. The time setting circuit includes resistors R6, R9, and R12, and capacitor C7. One end of resistor R9 is connected to the TIME pin of the pyroelectric sensor, and the other end of resistor R9 is connected to one end of capacitor C7, one end of resistor R6, and one end of resistor R12. The other end of capacitor C7 is grounded, the other end of resistor R12 is grounded, and the other end of resistor R6 is connected to the power supply.

[0013] Preferably, the photosensitive signal detection module includes a photodiode CSD1, a resistor R13, a capacitor C5, a resistor R10, a transistor Q2, and a resistor R7. The cathode of the photodiode CSD1 is connected to the power supply. The anode of the photodiode CSD1 is connected to one end of the resistor R13, one end of the capacitor C5, and one end of the resistor R10. The other end of the resistor R13 is grounded, the other end of the capacitor C5 is grounded, the other end of the resistor R10 is connected to the base of the transistor Q2, the collector of the transistor Q2 is connected to one end of the resistor R7, the other end of the resistor R7 is connected to the power supply, one end of the resistor R7 is also connected to the OEN pin of the main control chip, and the emitter of the transistor Q2 is grounded.

[0014] Preferably, the night light control module includes several illuminated night lights, which are connected in parallel and switched on and off by a transistor Q1. The base of the transistor Q1 is connected to the YD_PWM pin of the main control chip.

[0015] The beneficial effects of this utility model are: this utility model achieves accurate recognition of human activity and touch through the dual sensing of the electrostatic detection module and the photosensitive signal detection module;

[0016] The pyroelectric detection module includes a sensitivity setting circuit and a time setting circuit, which can adjust the sensitivity and lighting time of the night light according to needs, improving the product's adaptability and user experience.

[0017] The solution of this utility model has the advantages of being intelligent, highly configurable, stable and reliable, and easy to expand. Attached Figure Description

[0018] Figure 1This is a circuit principle block diagram of this utility model;

[0019] Figure 2 This is the circuit diagram of the pyroelectric detection module;

[0020] Figure 3 This is the circuit diagram of the photosensitive signal detection module;

[0021] Figure 4 This is the circuit diagram of the main control chip module;

[0022] Figure 5 This is the circuit diagram for the night light control module.

[0023] The components include: 1. Pyroelectric detection module, 2. Photosensitive signal detection module, 3. Main control chip module, and 4. Night light control module. Detailed Implementation

[0024] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0025] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0026] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0027] Example:

[0028] A touch-sensitive night light circuit, such as Figure 1 As shown, it includes:

[0029] The pyroelectric detection module 1 is used to detect human activity and send the human activity signal to the main control chip module;

[0030] Photosensitive signal detection module 2 is used to detect whether a human body touches the sensing area and send the trigger signal of the sensing area to the main control chip module;

[0031] The main control chip module 3 is used to receive signals from the pyroelectric detection module and the photosensitive signal detection module, and to determine whether to turn on the night light based on the signals from the pyroelectric detection module and the photosensitive signal detection module.

[0032] Night light control module 4 is used to receive control signals from the main control chip module and turn on the night light.

[0033] In this solution, human activity is first detected by a pyroelectric detection module. If a person approaches, a human activity signal is sent to the main control chip module. Then, a photosensitive signal detection module detects whether the person has touched the sensing area, thus realizing the photosensitive function. The main control chip module controls the night light control module to turn on the night light based on the signals from the pyroelectric and photosensitive signal detection modules. This design, through the joint detection of the pyroelectric and photosensitive signal detection modules, achieves precise control of the night light's activation, avoiding the insensitivity issues that can easily arise from using a single pyroelectric sensor to detect human signals to control the night light's on / off state.

[0034] like Figure 2 As shown, the pyroelectric detection module includes a pyroelectric sensor, a sensitivity setting circuit, and a time setting circuit. The pyroelectric sensor is connected to both the sensitivity setting circuit and the time setting circuit.

[0035] The pyroelectric sensor includes a SENS pin, a TIME pin, and a REL pin. The SENS pin is connected to the sensitivity setting circuit, the TIME pin is connected to the time setting circuit, and the REL pin is connected to the main control chip module. The sensitivity setting circuit includes resistors R1, R8, and R11, and capacitor C6. One end of resistor R8 is connected to the SENS pin of the pyroelectric sensor, and the other end of resistor R8 is connected to one end of capacitor C6, one end of resistor R1, and one end of resistor R11. The other end of capacitor C6 is grounded, the other end of resistor R11 is grounded, and the other end of resistor R1 is connected to the power supply. The time setting circuit includes resistors R6, R9, and R12, and capacitor C7. One end of resistor R9 is connected to the TIME pin of the pyroelectric sensor, and the other end of resistor R9 is connected to one end of capacitor C7, one end of resistor R6, and one end of resistor R12. The other end of capacitor C7 is grounded, the other end of resistor R12 is grounded, and the other end of resistor R6 is connected to the power supply.

[0036] like Figure 3As shown, the photosensitive signal detection module includes a photodiode CSD1, a resistor R13, a capacitor C5, a resistor R10, a transistor Q2, and a resistor R7. The cathode of the photodiode CSD1 is connected to the power supply. The anode of the photodiode CSD1 is connected to one end of the resistor R13, one end of the capacitor C5, and one end of the resistor R10. The other end of the resistor R13 is grounded, the other end of the capacitor C5 is grounded, the other end of the resistor R10 is connected to the base of the transistor Q2, the collector of the transistor Q2 is connected to one end of the resistor R7, the other end of the resistor R7 is connected to the power supply, and one end of the resistor R7 is also connected to the OEN pin of the main control chip. The emitter of the transistor Q2 is grounded.

[0037] like Figure 4 As shown, the main control chip module is connected to the time setting circuit and the sensitivity setting circuit through the TIME and SENS pins to control the delay time and sensing distance. It is connected to the pyroelectric sensor through the REL pin to receive the signal from the pyroelectric sensor. It is connected to the photosensitive signal detection module through the OEN pin to receive the signal from the photosensitive signal detection module. It sends a pulse control signal to the night light control module through the YD_PWM pin to control the night light's on / off state.

[0038] like Figure 5 As shown, the night light control module includes five night lights connected in parallel and switched on and off via a transistor Q1. The base of transistor Q1 is connected to the YD_PWM pin of the main control chip. Multiple night lights can be connected in parallel as needed, offering strong scalability.

[0039] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0040] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A touch sensitive night light circuit, characterized by, include: The pyroelectric detection module is used to detect human activity and send the human activity signal to the main control chip module; The photosensitive signal detection module is used to detect whether a human body touches the sensing area and send the trigger signal of the sensing area to the main control chip module; The main control chip module is used to receive signals from the pyroelectric detection module and the photosensitive signal detection module, and to determine whether to turn on the night light based on the signals from the pyroelectric detection module and the photosensitive signal detection module. The night light control module is used to receive control signals from the main control chip module and turn on the night light; The photosensitive signal detection module includes a photodiode CSD1, a resistor R13, a capacitor C5, a resistor R10, a transistor Q2, and a resistor R7. The cathode of the photodiode CSD1 is connected to the power supply. The anode of the photodiode CSD1 is connected to one end of the resistor R13, one end of the capacitor C5, and one end of the resistor R10. The other end of the resistor R13 is grounded, the other end of the capacitor C5 is grounded, the other end of the resistor R10 is connected to the base of the transistor Q2, the collector of the transistor Q2 is connected to one end of the resistor R7, the other end of the resistor R7 is connected to the power supply, and one end of the resistor R7 is also connected to the OEN pin of the main control chip. The emitter of the transistor Q2 is grounded.

2. The touch sensitive night light circuit of claim 1, wherein, The pyroelectric detection module includes a pyroelectric sensor, a sensitivity setting circuit, and a time setting circuit. The pyroelectric sensor is connected to both the sensitivity setting circuit and the time setting circuit.

3. The touch sensitive night light circuit of claim 2, wherein, The pyroelectric sensor includes a SENS pin, a TIME pin, and a REL pin. The SENS pin is connected to the sensitivity setting circuit, the TIME pin is connected to the time setting circuit, and the REL pin is connected to the main control chip module. The sensitivity setting circuit includes resistors R1, R8, and R11, and capacitor C6. One end of resistor R8 is connected to the SENS pin of the pyroelectric sensor, and the other end of resistor R8 is connected to one end of capacitor C6, one end of resistor R1, and one end of resistor R11. The other end of capacitor C6 is grounded, the other end of resistor R11 is grounded, and the other end of resistor R1 is connected to the power supply. The time setting circuit includes resistors R6, R9, and R12, and capacitor C7. One end of resistor R9 is connected to the TIME pin of the pyroelectric sensor, and the other end of resistor R9 is connected to one end of capacitor C7, one end of resistor R6, and one end of resistor R12. The other end of capacitor C7 is grounded, the other end of resistor R12 is grounded, and the other end of resistor R6 is connected to the power supply.

4. The touch-responsive night light circuit of claim 1, wherein, The night light control module includes several illuminated night lights, which are connected in parallel and switched on and off by a transistor Q1. The base of the transistor Q1 is connected to the YD_PWM pin of the main control chip.

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