Micro intelligent induction mirror lamp

Abstract

The utility model discloses a micro intelligent induction mirror lamp which comprises a constant current power supply chip U2, a pin 3 of the constant current power supply chip U2 is connected with the input end of a microwave circuit, a pin 4 of the constant current power supply chip U2 is connected with the input end of the microwave circuit, a capacitor C1 is arranged between the GND end of the microwave circuit and the input end of the microwave circuit, and the GND end is grounded. When the microwave induction value of the human body is larger than a preset value, the microwave circuit outputs a brightness control PWM pulse width modulation current signal to a pin 4 of the constant current power supply chip U2. According to the mirror lamp, the capacitor and the GND end are grounded, so that some signals (such as water drops) which do not change in capacitance can be filtered out, a preset current is generated when a human body touches or approaches, a preset current signal is output through the gravity of the touch of the human body or the staying time, the brightness of the mirror lamp is further controlled, the structure is simple and stable, and mistaken touch is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of microwave circuits, and in particular to a micro-intelligent inductive mirror lamp. Background Art

[0002] In mirror light control, microwave circuits are generally used to achieve the effect of stepless light adjustment. However, in actual control, problems such as false touches often occur, such as water droplet adhesion, which in turn affects the user experience. Utility Model Content

[0003] The main purpose of the utility model is to provide a micro-intelligent inductive mirror lamp, which aims to control the light adjustment of the mirror lamp through a simple circuit and has good stability.

[0004] To achieve the above purpose, the utility model provides a micro-intelligent induction mirror lamp, comprising:

[0005] A constant current power supply chip U2, wherein the pin 3 of the constant current power supply chip U2 is connected to the input end of the microwave circuit, and the pin 4 of the constant current power supply chip U2 is connected to the input end of the microwave circuit.

[0006] A capacitor C1 is provided between the GND end of the microwave circuit and the input end of the microwave circuit, and the GND end is grounded;

[0007] When the microwave induction value of the human body is greater than a predetermined value, the microwave circuit outputs a brightness control PWM pulse width modulation current signal to pin 4 of the constant current power supply chip U2.

[0008] In the actual design, by grounding the capacitor and the GND terminal, some non-capacitive change signals (such as water droplets) can be filtered out. When a human body touches or approaches, a predetermined current is generated. Through the gravity of the human body's touch or the duration of stay, a predetermined current signal is output to control the brightness of the mirror light. The structure is simple and stable, and accidental touches are effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is the circuit diagram of the utility model. DETAILED DESCRIPTION

[0010] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0011] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0012] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0013] like Figure 1 As shown, a micro-intelligent induction mirror lamp includes:

[0014] A constant current power supply chip U2, wherein the pin 3 of the constant current power supply chip U2 is connected to the input end of the microwave circuit, and the pin 4 of the constant current power supply chip U2 is connected to the input end of the microwave circuit.

[0015] A capacitor C1 is provided between the GND end of the microwave circuit and the input end of the microwave circuit, and the GND end is grounded;

[0016] When the microwave induction value of the human body is greater than a predetermined value, the microwave circuit outputs a brightness control PWM pulse width modulation current signal to pin 4 of the constant current power supply chip U2.

[0017] In the actual design, by grounding the capacitor and the GND terminal, some non-capacitive change signals (such as water droplets) can be filtered out. When a human body touches or approaches, a predetermined current is generated. Through the gravity of the human body's touch or the duration of stay, a predetermined current signal is output to control the brightness of the mirror light. The structure is simple and stable, and accidental touches are effectively avoided.

[0018] Specifically, the microwave circuit is a radio frequency current switch RF. The RF part is a microwave circuit with a frequency ranging from 5.8-75GHZ. It detects the micro-movement or presence of a human body and the distance from the human body through an RF chip, and changes the brightness switch of the LED lamp by outputting a PWM waveform according to the function definition.

[0019] In an embodiment of the utility model, the microwave circuit is a radio frequency current switch RF.

[0020] Specifically, the constant current power supply chip U2 is IC--H7250, which is packaged in ESOP8. H7250 is an LED linear constant current control chip that can realize the first stage of light mixing and is compatible with three-stage brightness adjustment functions, and is applicable to 4-46V.

[0021] Because linear ICs have fewer peripheral components, they are used by many customers in circuits with small current and low voltage difference, which can save a lot of components, so cost control is effective. They support PWM dimming and linear dimming.

[0022] In the embodiment of the utility model, the frequency value of the radio frequency current switch RF is 5.8GHZ-75GHZ.

[0023] Specifically, the value of the capacitor C1 is 22uf / 10v. 22uf refers to the capacity of the capacitor, that is, the amount of charge it can store, and 10V refers to the maximum withstand voltage of the capacitor, that is, the maximum voltage that the capacitor can withstand without being damaged. In electronic circuits, it is very important to understand the capacity and withstand voltage of the capacitor because they directly affect the performance and safety of the capacitor in the circuit.

[0024] The capacitor not only protects the microwave circuit, but also acts as a filter valve to avoid the problem of accidental touch.

[0025] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A micro-intelligent induction mirror lamp, characterized in that: include: A constant current power supply chip U2, wherein the pin 3 of the constant current power supply chip U2 is connected to the input end of the microwave circuit, and the pin 4 of the constant current power supply chip U2 is connected to the input end of the microwave circuit. A capacitor C1 is provided between the GND end of the microwave circuit and the input end of the microwave circuit, and the GND end is grounded; When the microwave induction value of the human body is greater than a predetermined value, the microwave circuit outputs a brightness control PWM pulse width modulation current signal to pin 4 of the constant current power supply chip U2.

2. The micro-intelligent induction mirror lamp as claimed in claim 1, characterized in that: The microwave circuit is a radio frequency current switch, which is used to detect human body micro-movement or human body presence and human body distance, and changes the brightness switch of the LED lamp by outputting a PWM waveform according to the functional definition.

3. The micro-intelligent induction mirror lamp as claimed in claim 1, characterized in that: The model of the constant current power supply chip U2 is IC--H7250, which adopts ESOP8 packaging.

4. The micro-intelligent induction mirror lamp as claimed in claim 2, characterized in that: The frequency value of the radio frequency current switch is 5.8GHZ-75GHZ.

5. The micro-intelligent induction mirror lamp as claimed in claim 2, characterized in that: The value of the capacitor C1 is 22uf / 10v.

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