Acousto-optic alarm device for rapidly starting electronic product

Abstract

The utility model relates to an electronic product fast starting sound-light alarm device, belonging to the electronic security technical field, the device comprises a battery B1, a switch SW1, a resistor R1, a resistor R2, a controller MCU, an MOS tube Q1, a small power NPN type silicon tube Q2, an inductor L1 and a buzzer SP1, the positive pole of the battery B1 is connected with the third pin of the switch SW1, the second pin of the switch SW1 is connected with the resistor R1, a resistor R7 and the first pin of the inductor L1, and the positive pole of the battery B1 is connected with the third pin of the switch SW1. The other end of the resistor R1 is connected with an indicating lamp LED1, and the other end of the indicating lamp LED1 is connected with the collector electrode of the low-power NPN type silicon tube Q2. The product is provided with a quick-start alarm pull ring and a metal lock ring, the pull ring can be fixed on a body and carried articles such as a bag and other equipment through the lock ring, the product can be quickly torn off to be connected with the pull ring in case of danger, and the product can quickly give out sound and flicker light to warn and expel people and objects causing danger.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic security, in particular to a quick-activation sound and light alarm device for electronic products. Background Art

[0002] Nowadays, a small number of unstable elements in society endanger social order and affect the normal life of ordinary people. However, the lawless people do these things in hidden places and are not easy to be found. At present, the automatic alarms on the market often malfunction, making the alarm effect poor. Utility Model Content

[0003] The utility model provides an electronic product quick-activation sound and light alarm device to solve the problems mentioned in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A quick-activation sound and light alarm device for electronic products comprises a battery B1, a switch SW1, a resistor R1, a resistor R2, a controller MCU, a MOS tube Q1, a low-power NPN silicon tube Q2, an inductor L1 and a buzzer SP1, wherein the positive electrode of the battery B1 is connected to the 3rd pin of the switch SW1, the 2nd pin of the switch SW1 is connected to the resistor R1, the resistor R7 and the 1st pin of the inductor L1, the other end of the resistor R7 is connected to the power supply pin 5 of the controller MCU after filtering by a capacitor C2 and filtering by resistors R8 and C1, and the 2nd pin of the controller MCU is connected to the negative electrode of the battery to form MCU power supply. The other end of resistor R7 is connected to pins 2 and 3 of J1, and pin 1 of J1 is connected to pin 3 of MCU, R4, and C3. When the anti-dismantling part is not removed, pins 1, 2, and 3 of J1 are connected together, the battery charges C3 through R4, and pin 3 of MCU is high level, and MUC is in sleep mode. When the anti-dismantling part (pull ring) is removed, pins 1 and 2, 3 of J1 are disconnected, C3 is discharged through R4, and pin 4 of MCU is at a low level, and MCU enters work (square wave signal is input to pins 1 and 6 of MCU) (square wave signal is input to pins 1 and 6 of MCU). Pin 4 of MCU is connected to resistor R5, and the other end of resistor R5 is grounded. The other end of resistor R1 is connected to indicator LED1. The other end of indicator LED1 is connected to the collector of low-power NPN silicon tube Q2. The base of low-power NPN silicon tube Q2 is connected to resistor R2, pin 1 of controller MCU, and R9 is connected to the base and emitter of low-power NPN silicon tube Q2. The emitter of low-power NPN silicon tube Q2 is grounded. Pin 6 of the controller MCU is connected to resistor R3, the other end of resistor R3 is connected to the gate of MOS tube Q1, the source of MOS tube Q1 is connected to the other end of capacitor C1, the other end of capacitor C2, pin 1 of switch J1, the negative electrode of battery B1 and the ground terminal, the drain of MOS tube Q1 is connected to pin 2 of inductor L1 and pin 2 of buzzer SP1, and pin 3 of inductor L1 is connected to pin 1 of buzzer SP1.

[0006] As a further technical solution of the utility model: the MOS tube Q1 is an N-MOS tube.

[0007] As a further technical solution of the utility model: the indicator light LED1 is a light emitting diode.

[0008] As a further technical solution of the present utility model: the battery B1 is a 3V button battery.

[0009] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0010] The utility model has a function of quickly enabling sound and light alarms, and can disconnect the battery from the circuit when not in use for a long time, which is safer than previous products, and has a function of replacing the battery for reuse, which is more environmentally friendly than previous products. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 This is a circuit diagram of the utility model.

[0013] Figure 2 It is a structural diagram of the utility model. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model 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 in 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.

[0015] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the present invention are only for the purpose of describing specific implementation methods and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0017] Embodiment 1:

[0018] The utility model provides Figure 1 and 2The drawings shown are specifically an electronic product quick-activation sound and light alarm device, including a battery B1, a switch SW1, a resistor R1, a resistor R2, a controller MCU, a MOS tube Q1, a low-power NPN silicon tube Q2, an inductor L1 and a buzzer SP1. The positive pole of the battery B1 is connected to pin 3 of the switch SW1, and pin 2 of the switch SW1 is connected to resistor R1, resistor R7 and pin 1 of the inductor L1. The other end of the resistor R7 is filtered by capacitor C2 and filtered by resistors R8 and C1, and is connected to pin 5 of the controller MCU. Pin 2 of the controller MCU is connected to the negative pole of the battery to form MCU power supply. The other end of resistor R7 is connected to pins 2 and 3 of J1, and pin 1 of J1 is connected to pin 3 of MCU, R4, and C3. When the anti-dismantling part is not removed, pins 1, 2, and 3 of J1 are connected together, the battery charges C3 through R4, and pin 3 of MCU is high level, and MUC is in sleep mode. When the anti-dismantling part (pull ring) is removed, pins 1 and 2 and 3 of J1 are disconnected, C3 is discharged through R4, and pin 4 of MCU is at a low level, and MCU enters work (square wave signal is input to pins 1 and 6 of MCU). Pin 4 of MCU is connected to resistor R5, and the other end of resistor R5 is grounded. The other end of resistor R1 is connected to indicator LED1, and the other end of indicator LED1 is connected to the collector of low-power NPN silicon tube Q2. The base of low-power NPN silicon tube Q2 is connected to resistor R2, pin 1 of controller MCU, and R9 is connected to the base and emitter of low-power NPN silicon tube Q2, and the emitter of low-power NPN silicon tube Q2 is grounded. Pin 6 of the controller MCU is connected to resistor R3, the other end of resistor R3 is connected to the gate of MOS tube Q1, the source of MOS tube Q1 is connected to the other end of capacitor C1, the other end of capacitor C2, pin 1 of switch J1, the negative electrode of battery B1 and the ground terminal, the drain of MOS tube Q1 is connected to pin 2 of inductor L1 and pin 2 of buzzer SP1, and pin 3 of inductor L1 is connected to pin 1 of buzzer SP1.

[0019] Embodiment 2:

[0020] On the basis of Example 1, MUC (MC30P6280) constructs firmware to make pin 3 a trigger pin (low level trigger) and pin 3 a non-triggered MUC in sleep power saving mode. After triggering, pin 1 outputs a 10Hz square wave with a duty cycle of 66.67% equal to the battery voltage, and pin 6 outputs a 2.6KHZ duty cycle of 33.33% to 50.00%. After 6 cycles, the frequency is increased to 2.7KHZ with the duty cycle unchanged. Repeat the same cycle... until the frequency is increased to 4.0KHZ and then the frequency is reduced to 3.9KHZ... When it reaches 2.6KHZ, the frequency is increased again, and the cycle continues until the power is off or pin 3 is at a trigger high level.

[0021] Embodiment 3:

[0022] On the basis of Example 1, the anti-disassembly (pull ring) is usually installed in the switch J1. When the pull ring is pulled out, the 2nd and 3rd pins of the switch J1 are disconnected from the 1st pin, and the 3rd pin of the MCU obtains a low-level trigger signal. The MOS tube Q1 is an N-MOS tube, L1 is a 1.5uH:110uH inductor of the 3rd pin, and SP1 is a passive buzzer. The transistor Q2 is a low-power NPN silicon tube. The indicator LED1 is a light-emitting diode.

[0023] Here’s how it works:

[0024] B1 is two 3V button batteries. When the 2nd and 1st pins of the switch SW1 are connected (hereinafter referred to as the switch is on), the 4th and 5th pins of the MCU are powered. When the 3rd and 2nd pins of the switch SW1 are connected (hereinafter referred to as the switch is off), the electricity stored in the capacitor and inductor is discharged. When the switch is turned on, the voltage passes through R7 and R8 and is filtered by C1 and C2 to supply power to the 5th pin of the MCU. The negative pole of the power supply is connected to the negative power supply pin 2 of the MCU. When the anti-tampering device (pull ring) is pulled out, the 2nd and 3rd pins of the switch J1 are disconnected from the 1st pin, and the 3rd pin of the MCU receives a low-level trigger signal (C3 has a debouncing function). The MCU runs the code to make the 1st and 3rd pins output square wave signals.

[0025] 1. The 10Hz square wave with equal amplitude and voltage outputted from pin 1 of MCU is loaded to the base of transistor Q2 (S8050) through R2, making Q2 turned on or off. Since the positive pole of LED1 is connected to pin 2 of the switch through a current limiting resistor R1, a positive voltage is obtained. When Q2 is turned on, the negative pole of LED1 is connected to the negative pole of the battery, and the LED lamp obtains a voltage and lights up. When Q2 is turned off, the negative pole of LED is disconnected and the LED lamp goes out (R9 is to prevent Q2 from being triggered by mistake).

[0026] 2. The MCU's 6-pin outputs a square wave with an amplitude of 2.6KHz to 4KHz and voltage equal to the gate of the Q1 (2N7002) thyristor through R3, turning Q1 on or off. Since the 1-pin of the inductor L1 is connected to the positive electrode of the battery, when Q1 is turned on, the drain of Q1 is connected to the negative electrode of the battery, and the positive voltage of the 1-pin of the low-potential L1 flows to the low-potential 2-pin (the source of Q1). Because of the conduction and cutoff of Q1, the 1-2 pin and the 2-3 pin of the inductor L1 are wound on the same magnetic rod using 1.5mH:110mH winding. According to the characteristics of the inductor, the 2-pin and 3-pin of the inductor L1 obtain an electromotive force greater than the battery voltage. According to the alternating frequency square wave output by the MCU and the amplified electromotive force, the buzzer makes a sound.

[0027] The product is equipped with a quick-activation alarm pull ring and a metal locking ring. The pull ring can be fixed to the body and carried items, such as bags and other equipment through the locking ring. When encountering danger, the connection between the product and the pull ring can be quickly torn off. The product will quickly make a sound and flash lights to warn and drive away people and objects that cause you danger.

[0028] Compared with previous products, this product can disconnect the battery from the circuit when not in use for a long time. It is safer than previous products and the battery can be replaced, which is more environmentally friendly than previous products where the battery can only be discarded after use.

[0029] The present invention requires adjusting the sound waves output by the buzzer, emitting sound and ELD light, and having the effect of driving away bad guys. In terms of replacing the battery, two actions are required at the same time when opening the battery cover, and tools are required to open it. Such an opening method can only be replaced by adults, which has a safety awareness of preventing children from opening the battery and swallowing it.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0031] In addition, it should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment have also been appropriately combined to form other implementation modes that are easy for those skilled in the art to understand.

Claims

1. An electronic product quick-activation sound and light alarm device, comprising a battery B1, a switch SW1, a resistor R1, a resistor R2, a controller MCU, a MOS tube Q1, a low-power NPN silicon tube Q2, an inductor L1, a buzzer SP1 and an anti-removal alarm connector J1, characterized in that: The positive pole of the battery B1 is connected to pin 3 of the switch SW1, pin 2 of the switch SW1 is connected to resistor R1, resistor R7 and pin 1 of the inductor L1, the other end of the resistor R7 is connected to pin 5 of the controller MCU after filtering by capacitor C2, resistor R8 and C1, pin 2 of the controller MCU is connected to the negative pole of the battery to form MCU power supply, the other end of the resistor R7 is connected to pins 2 and 3 of J1, pin 1 of J1 is connected to pin 3 of the MCU, R4, C3, when the anti-removal component is not removed, pins 1, 2 and 3 of J1 are connected together, the battery charges C3 via R4, pin 4 of the MCU is connected to resistor R5, the other end of the resistor R5 is grounded, and the other end of the resistor R1 is connected to the indicator LED 1. The other end of the indicator LED1 is connected to the collector of the low-power NPN silicon tube Q2, the base of the low-power NPN silicon tube Q2 is connected to the resistor R2, the 1-pin of the controller MCU, and R9 is connected to the base and emitter of the low-power NPN silicon tube Q2. The emitter of the low-power NPN silicon tube Q2 is grounded, and the 6-pin of the controller MCU is connected to the resistor R3. The other end of the resistor R3 is connected to the gate of the MOS tube Q1. The source of the MOS tube Q1 is connected to the other end of the capacitor C1, the other end of the capacitor C2, the 1-pin of the switch J1, the negative electrode of the battery B1 and the ground terminal. The drain of the MOS tube Q1 is connected to the 2-pin of the inductor L1 and the 2-pin of the buzzer SP1, and the 3-pin of the inductor L1 is connected to the 1-pin of the buzzer SP1.

2. The electronic product quick activation sound and light alarm device according to claim 1, characterized in that: The MOS tube Q1 is an N-MOS tube.

3. The electronic product quick activation sound and light alarm device according to claim 1, characterized in that: The indicator light LED1 is a light emitting diode.

4. The electronic product quick activation sound and light alarm device according to claim 1, characterized in that: The battery B1 is a 3V button battery.

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