Acousto-optic induction lamp
By incorporating a control module and fuse into the sound and light sensor lamp, overcurrent protection is achieved in case of abnormal current, solving the problem of the sound and light sensor lamp burning out due to abnormal power supply and improving the safety and reliability of the product.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG NASITER INT LIGHTNING CO LTD
- Filing Date
- 2025-02-06
- Publication Date
- 2026-04-24
AI Technical Summary
Existing sound and light sensor lights are prone to controller damage when the control power supply fails, resulting in economic losses and safety hazards, and they lack protective functions.
A sound and light sensor lamp is designed, which includes a rectifier bridge, a first switch, a fuse, a control module, a sound sensor, and a light sensor. The control module detects the current signal in real time. When the current exceeds the threshold, it controls the first switch to turn off, disconnecting the DC and AC power supplies of the rectifier bridge to achieve overcurrent protection. The fuse provides dual protection.
It effectively prevents lamps from burning out due to overcurrent, reduces economic losses, improves product safety and reliability, and avoids controller damage through a dual protection mechanism.
Smart Images
Figure CN224164921U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lighting technology, and in particular to a sound and light sensor lamp. Background Technology
[0002] Sound and light sensor lighting is widely used in public areas such as stairwells and corridors in high-rise buildings. It is one of the most common products used in lighting control, controlling the lights to illuminate based on the light intensity detected by photoelectric sensors and the sound signals detected in the environment.
[0003] When a sound- and light-sensitive light is turned on, if the power supply it controls malfunctions and burns out, it will typically generate a large current. Without protection, the sound- and light-sensitive controller will also be damaged. Currently, sound- and light-sensitive lights lack protective features, leading to economic losses and posing certain safety hazards. Utility Model Content
[0004] The purpose of this utility model is to provide a sound and light sensor controller. When the controlled lamp malfunctions and generates a large current, the control module controls the first switch to turn off, thereby de-energizing the DC side of the rectifier bridge and further de-energizing the AC side of the rectifier bridge, thus protecting the controller and the circuit.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] One aspect of this utility model provides a sound and light sensor lamp, comprising: a rectifier bridge, the first end of the AC side of the rectifier bridge being connected to the input end of the live wire, the second end of the AC side of the rectifier bridge being connected to the output end of the live wire, the output end of the live wire being connected to the first electrode of the lamp, and the second electrode of the lamp being connected to the neutral wire; a first switch, the input end of the first switch being connected to the positive output end of the rectifier bridge; a second switch, the control end of the second switch being connected to the output end of the first switch; a fuse, the two ends of the fuse being connected to the output end of the first switch and the negative output end of the rectifier bridge, respectively; a control module, the control end of the first switch being connected to the control output end of the control module, and the second switch being connected to the reset end of the control module; a sound sensor and a light sensor, the sound sensor being connected to the sound control receiver end of the control module, and the light sensor being connected to the light control receiver end of the control module; the reset end of the control module detects the power signal in real time through the second switch, and when the power current exceeds a preset threshold, the control module controls the first switch to turn off, and the lamp is powered off.
[0007] In some embodiments, the first switch includes a unidirectional thyristor and a first resistor. The anode of the unidirectional thyristor is connected to the positive output terminal of the rectifier bridge, the cathode of the unidirectional thyristor is connected to the control terminal of the second switch, and the control electrode of the unidirectional thyristor is connected to the control output terminal of the control module through the first resistor.
[0008] In some embodiments, the second switch includes an NPN transistor, a second resistor, a third resistor, and a first capacitor. The collector of the NPN transistor is connected to the reset terminal of the control module. The base of the NPN transistor is connected to one end of the second resistor, one end of the third resistor, and one end of the first capacitor. The other end of the second resistor is connected to the cathode of the unidirectional thyristor. The emitter of the NPN transistor, the other end of the third resistor, and the other end of the first capacitor are all connected to the negative output terminal of the rectifier bridge.
[0009] In some embodiments, the second switch further includes a first diode, the negative terminal of which is connected to the other end of the second resistor, and the positive terminal of which is connected to the cathode of the unidirectional thyristor.
[0010] In some embodiments, the sound and light sensor lamp further includes a second diode, the anode of which is connected to the anode of the first diode, and the cathode of which is connected to the cathode output terminal of the rectifier bridge via the fuse.
[0011] In some embodiments, the sound and light sensor lamp further includes a third diode, the anode of which is connected to the cathode of the unidirectional thyristor, and the cathode of which is connected to the anodes of the first diode and the second diode.
[0012] According to an embodiment of this utility model, a sound-and-light sensor lamp has at least the following beneficial effects: The reset terminal of the control module detects the current signal in real time through an NPN transistor. After the lamp is turned on, when the power supply current exceeds a preset threshold, the control module controls the unidirectional thyristor to turn off, thereby cutting off the power to the lamp on the AC side of the rectifier bridge. This provides overcurrent protection, reducing economic damage and safety hazards caused by lamp burnout due to overcurrent, and improving product reliability. This application also includes a fuse in the circuit. If the unidirectional thyristor fails to turn off in time, the fuse automatically blows, providing dual protection and improving the safety and reliability of the sensor lamp.
[0013] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this disclosure. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the sound and light sensor lamp circuit according to an embodiment. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] The terms "first," "second," and "third" 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. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0019] 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, they are provided so that the description of this disclosure will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art. The drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.
[0020] The technical solutions of the embodiments of this application are briefly described below:
[0021] According to some embodiments, such as Figure 1 As shown, this application provides a sound and light sensor lamp, which includes:
[0022] The rectifier bridge BD has its first AC side terminal connected to the live wire's input terminal, and its second AC side terminal connected to the live wire's output terminal. The live wire's output terminal is connected to the first electrode of the LED lamp, and the LED lamp's second electrode is connected to the neutral wire.
[0023] The first switch, the input terminal of the first switch is connected to the positive output terminal of the rectifier bridge BD;
[0024] The second switch is connected to the output of the first switch.
[0025] Fuse F is connected to the output terminal of the first switch and the negative output terminal of the rectifier bridge BD, respectively.
[0026] The control module has a first switch whose control terminal is connected to the control output terminal of the control module, and a second switch whose reset terminal is connected to the control module.
[0027] The acoustic sensor MIC is connected to the sound control receiver of the control module, and the optical sensor RL is connected to the light control receiver of the control module.
[0028] The working principle of the above embodiment is as follows: when the control module detects that the ambient light intensity is lower than a first set value through the light sensor RL and that the ambient decibel level is higher than a second set value through the sound sensor MIC, the control module controls the first switch to turn on, energizing both the DC and AC sides of the rectifier bridge BD, thus illuminating the LED lamp. The reset terminal of the control module detects the power signal in real time through the second switch. After the LED lamp is lit, if an abnormality occurs and a large current is generated, the control module controls the first switch to turn off, de-energizing the DC side of the rectifier bridge BD, which in turn de-energizes the AC side of the rectifier bridge BD, further de-energizing the LED lamp and achieving overcurrent protection. This application also includes a fuse F in the circuit. If the first switch fails to turn off in time, the fuse F automatically blows, providing dual protection and improving the safety and reliability of the sensor lamp.
[0029] The following is in conjunction with the appendix to this instruction manual. Figure 1 The preferred embodiments of this disclosure will be further described in detail below.
[0030] According to some embodiments, such as Figure 1 As shown, the first switch includes a unidirectional thyristor Q1 and a first resistor R1. The anode of the unidirectional thyristor Q1 is connected to the positive output terminal of the rectifier bridge BD, the cathode of the unidirectional thyristor Q1 is connected to the control terminal of the second switch, and the control electrode of the unidirectional thyristor Q1 is connected to the control output terminal of the control module through the first resistor R1.
[0031] Furthermore, such as Figure 1 As shown, the second switch includes an NPN transistor Q2, a second resistor R2, a third resistor R3, and a first capacitor C1. The collector of the NPN transistor Q2 is connected to the reset terminal of the control module. The base of the NPN transistor Q2 is connected to one end of the second resistor R2, one end of the third resistor R3, and one end of the first capacitor C1. The other end of the second resistor R2 is connected to the cathode of the unidirectional thyristor Q1. The emitter of the NPN transistor Q2, the other end of the third resistor R3, and the other end of the first capacitor C1 are all connected to the negative output terminal of the rectifier bridge BD.
[0032] Furthermore, such as Figure 1 As shown, the second switch also includes a first diode D1, the negative terminal of the first diode D1 is connected to the other end of the second resistor R2, and the positive terminal of the first diode D1 is connected to the cathode of the unidirectional thyristor Q1.
[0033] The working principle of the above embodiment is as follows: When the control module detects that the ambient light intensity is lower than the first set value through the light sensor RL and that the ambient decibel level is higher than the second set value through the sound sensor MIC, the control output terminal of the control module outputs a high level, the unidirectional thyristor Q1 conducts, forming a DC circuit through the fuse F, energizing the DC side of the rectifier bridge BD, and also energizing the AC side of the rectifier bridge BD, thus lighting up the LED lamp. The reset terminal of the control module detects the power signal in real time through the NPN transistor Q2. After the LED lamp is lit, when the power current exceeds the preset threshold, the NPN transistor Q2 pulls down the reset terminal of the control module. When the reset terminal of the control module detects a low-level signal, it determines that the power current exceeds the preset threshold, the control output terminal of the control module outputs a low-level signal, the unidirectional thyristor Q1 turns off, the DC side of the rectifier bridge BD is de-energized, causing the AC side of the rectifier bridge BD to also be de-energized, further causing the LED lamp to be de-energized, thus achieving the effect of overcurrent protection. This application also includes a fuse F in the circuit. If the unidirectional thyristor Q1 fails to turn off in time, the fuse F will automatically blow. This dual protection improves the safety and reliability of the sensor lamp.
[0034] According to some embodiments, such as Figure 1 As shown, the sound and light sensor lamp also includes a second diode D2. The positive terminal of the second diode D2 is connected to the positive terminal of the first diode D1, and the negative terminal of the second diode D2 is connected to the negative output terminal of the rectifier bridge BD through the fuse F.
[0035] According to some embodiments, such as Figure 1 As shown, the sound and light sensor lamp also includes a third diode D3. The positive terminal of the third diode D3 is connected to the cathode of the unidirectional thyristor Q1, and the negative terminal of the third diode D3 is connected to the positive terminal of the first diode D1 and the positive terminal of the second diode D2.
[0036] In this configuration, the second diode D2 and the third diode D3 are used for voltage division. The second diode D2 and the third diode D3 can also be replaced by resistors.
[0037] Specifically, such as Figure 1 As shown, the control module includes a main control chip, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, and a fifth capacitor C5. Pin 8 of the main control chip, the power input terminal, is connected to the positive output terminal of the rectifier bridge BD via the fourth resistor R4. Pin 1, the charging pin, is connected to the positive terminal of the third capacitor C3. Pin 2, the reference pin, is connected to one end of the fourth capacitor C4, one end of the fifth resistor R5, and one end of the sixth resistor R6. Pin 3, the reset pin, is connected to the collector of the NPN transistor Q2 and one end of the fifth capacitor C5. The negative terminal of the third capacitor C3 and the fourth capacitor C4... The other end of the resistor and the other end of the fifth capacitor C5 are both connected to the negative output terminal of the rectifier bridge BD. The other end of the fifth resistor R5 is connected to one end of the photosensitive sensor RL and the photosensitive receiver pin 6 of the main control chip. The other end of the sixth resistor R6 is connected to one end of the second capacitor C2, one end of the sound sensor MIC and the sound receiver pin 5 of the main control chip. The other ends of the photosensitive sensor RL, the sound sensor MIC, and the second capacitor C2 are all connected to the negative output terminal of the rectifier bridge BD. The control output terminal pin 7 of the main control chip is connected to the control electrode of the unidirectional thyristor Q1 through the first resistor R1. The ground terminal pin 4 of the main control chip is connected to the negative output terminal of the rectifier bridge BD.
[0038] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
[0039] Although this disclosure has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Because this disclosure can be embodied in many forms without departing from the spirit or substance of this application, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.
Claims
1. A sound- and light-sensitive lamp, characterized in that, The sound and light sensor includes: A rectifier bridge, wherein the first end of the AC side of the rectifier bridge is connected to the inlet end of the live wire, the second end of the AC side of the rectifier bridge is connected to the outlet end of the live wire, the outlet end of the live wire is connected to the first electrode of the lamp, and the second electrode of the lamp is connected to the neutral wire. The first switch, the input terminal of which is connected to the positive output terminal of the rectifier bridge; The second switch is connected to the output terminal of the first switch. A fuse, the two ends of which are respectively connected to the output terminal of the first switch and the negative output terminal of the rectifier bridge; The control module has the control terminal of the first switch connected to the control output terminal of the control module, and the second switch connected to the reset terminal of the control module. An acoustic sensor and an optical sensor are provided, wherein the acoustic sensor is connected to the acoustic receiver of the control module, and the optical sensor is connected to the optical receiver of the control module. The reset terminal of the control module detects the power signal in real time through the second switch. When the power current exceeds a preset threshold, the control module controls the first switch to turn off, and the lamp is powered off.
2. The sound and light sensor lamp according to claim 1, characterized in that, The first switch includes a unidirectional thyristor and a first resistor. The anode of the unidirectional thyristor is connected to the positive output terminal of the rectifier bridge, the cathode of the unidirectional thyristor is connected to the control terminal of the second switch, and the control electrode of the unidirectional thyristor is connected to the control output terminal of the control module through the first resistor.
3. The sound and light sensor lamp according to claim 2, characterized in that, The second switch includes an NPN transistor, a second resistor, a third resistor, and a first capacitor. The collector of the NPN transistor is connected to the reset terminal of the control module. The base of the NPN transistor is connected to one end of the second resistor, one end of the third resistor, and one end of the first capacitor. The other end of the second resistor is connected to the cathode of the unidirectional thyristor. The emitter of the NPN transistor, the other end of the third resistor, and the other end of the first capacitor are all connected to the negative output terminal of the rectifier bridge.
4. The sound and light sensor lamp according to claim 3, characterized in that, The second switch further includes a first diode, the negative terminal of which is connected to the other end of the second resistor, and the positive terminal of which is connected to the cathode of the unidirectional thyristor.
5. The sound and light sensor lamp according to claim 4, characterized in that, The sound and light sensor lamp also includes a second diode, the positive terminal of which is connected to the positive terminal of the first diode, and the negative terminal of the second diode is connected to the negative output terminal of the rectifier bridge through the fuse.
6. The sound and light sensor lamp according to claim 5, characterized in that, The sound and light sensor lamp also includes a third diode, the positive terminal of which is connected to the cathode of the unidirectional thyristor, and the negative terminal of which is connected to the positive terminals of the first diode and the second diode.