Solar-charged outdoor smoke alarm circuit

Abstract

The utility model discloses an outdoor smoke alarm circuit charged by solar energy. The outdoor smoke alarm circuit comprises a photovoltaic panel, a rechargeable battery, a microcontroller U1, a photovoltaic charging interface circuit, a TYPE-C charging circuit, a booster circuit, a sound alarm circuit, a light-emitting alarm circuit and a smoke detection circuit. The photovoltaic panel is used for converting solar energy into electric energy and charging the rechargeable battery; the photovoltaic charging interface circuit is connected with the microcontroller U1 and the rechargeable battery, and provides power for the microcontroller U1 through the rechargeable battery; the TYPE-C charging circuit provides a TYPE-C charging interface, and the booster circuit is used for boosting the voltage of the rechargeable battery to + 5V and providing a USB charging interface; the smoke detection circuit is used for detecting smoke information of the surrounding environment and sending the smoke information to the microcontroller U1. The solar-charged outdoor smoke alarm circuit has the advantages that the solar photovoltaic panel or the USB can be used for charging an internal battery, and the solar-charged outdoor smoke alarm circuit can be used as an emergency power supply for charging an external mobile phone.

Description

Technical Field

[0001] The utility model relates to an alarm device, in particular to an outdoor smoke alarm circuit charged by solar energy. Background Art

[0002] Fire is the most dangerous enemy of mankind and the most terrible disaster. It will bring the most harmful and devastating consequences to mankind. Any forest fire that loses human control, spreads and expands freely in the forest, and brings certain harm and losses to the forest, forest ecosystem and human beings is called a forest fire. Forest fires not only burn large areas of houses and forests, harm animals in the forest, but also reduce the reproductive capacity of the forest, cause soil impoverishment, destroy the role of forests in conserving water sources, and even cause the ecological environment to lose balance. This requires the use of fire monitoring devices to monitor the situation of the forest in real time so that forest fires can be extinguished in time. Forest fire prevention is an important part of China's disaster prevention and mitigation work, an important part of the construction of the national public emergency system, an important guarantee for social stability and people's livelihood, and the basis and prerequisite for accelerating forestry development and strengthening ecological construction.

[0003] Technology plays an increasingly important role in forest fire prevention. Smart forest fire early warning detection and monitoring management system is an effective means to solve the problem of forest fire prevention. Smoke alarm is an intelligent sensor that achieves fire prevention by monitoring the concentration of smoke. It uses an ion smoke sensor inside. Ion smoke sensor is a technologically advanced sensor with stable and reliable operation. It is widely used in various fire alarm systems and its performance is far superior to gas sensitive resistor fire alarms.

[0004] However, the current outdoor smoke alarm device only has an alarm function. Mobile phones have become an indispensable part of our daily life and work. When working outdoors, it is inevitable that the mobile phone will run out of power, but the existing smoke alarm does not have the function of charging the mobile phone. Summary of the invention

[0005] The utility model aims to avoid the deficiencies in the above-mentioned prior art and provides a solar-powered outdoor smoke alarm circuit, which has the function of using solar power to charge and providing power for mobile terminals such as mobile phones.

[0006] The utility model adopts the following technical solutions to solve the technical problems.

[0007] The utility model discloses a solar-powered outdoor smoke alarm circuit, comprising a photovoltaic panel, a rechargeable battery BT1, a microcontroller U1, a photovoltaic charging interface circuit, a TYPE-C charging circuit, a boost circuit, a sound alarm circuit, a light-emitting alarm circuit and a smoke detection circuit;

[0008] The photovoltaic panel is used to convert solar energy into electrical energy and charge the rechargeable battery BT1; the photovoltaic charging interface circuit is connected to the microcontroller U1 and the rechargeable battery, and the rechargeable battery provides power for the microcontroller U1, the boost circuit, the sound alarm circuit and the smoke detection circuit;

[0009] The photovoltaic charging interface circuit, TYPE-C charging circuit, boost circuit, sound alarm circuit, light emitting alarm circuit and smoke detection circuit are all connected to the microcontroller U1;

[0010] The TYPE-C charging circuit provides a TYPE-C charging interface, and the boost circuit is used to increase the voltage of the rechargeable battery to +5V and provide a USB charging interface;

[0011] The smoke detection circuit is used to detect smoke information in the surrounding environment and send the smoke information to the microcontroller U1;

[0012] The microcontroller U1 outputs a sound alarm signal to the sound alarm circuit, and the sound alarm circuit issues a sound alarm;

[0013] The microcontroller U1 outputs a luminous alarm signal to the luminous alarm circuit, and the luminous alarm circuit sends out a flash alarm.

[0014] The structural features of the solar-powered outdoor smoke alarm circuit of the utility model are also as follows:

[0015] Furthermore, the microcontroller U1 is JZIC_SOP16.

[0016] Furthermore, the photovoltaic charging interface circuit includes resistors R4-R5, a diode D1 and a connection terminal J2; one end of the resistor R4 is connected to the pin 4 of the microcontroller U1, and the other end of the resistor R4 is connected to the power supply terminal +VCC.

[0017] Furthermore, the TYPE-C charging circuit includes a charging control chip U2, resistors R1-R3, capacitors C1-C2, a terminal J1 and a battery BT1.

[0018] Furthermore, the boost circuit includes a boost chip U3, resistors R8~R14, capacitors C4~C7, an inductor L2, a diode D3, a field effect transistor Q3 and a terminal J3; one end of the resistor R12 is connected to pin 9 of the microcontroller U1, the gate of the field effect transistor Q3 and one end of the resistor R13 are both connected to pin 8 of the microcontroller U1, one end of the resistor R14 is connected to pin 15 of the microcontroller U1, and one end of the inductor L2 is connected to the positive terminal BAT+ of the battery BT1.

[0019] Furthermore, the boost chip U3 is a boost converter AP2004.

[0020] Furthermore, the sound alarm circuit includes a buzzer BUZ, a resistor R6, a capacitor C3, an inductor L1, a diode D2 and transistors Q1-Q2.

[0021] Furthermore, the light emitting alarm circuit includes a light emitting diode LED1 and a resistor R7; one end of the resistor R7 is connected to pin 7 of the microcontroller U1, the other end of the resistor R7 is connected to the positive electrode of the light emitting diode LED1, and the negative electrode of the light emitting diode LED1 is grounded.

[0022] Furthermore, the smoke detection circuit includes an operational amplifier U4, resistors R15-R26, capacitors C9-C14, a light emitting diode LED2, a diode D4, and a transistor Q4.

[0023] Furthermore, the operational amplifier U4 is an operational amplifier CA358.

[0024] Compared with the prior art, the beneficial effects of the utility model are embodied in:

[0025] The utility model discloses an outdoor smoke alarm circuit for solar charging, comprising a photovoltaic panel, a rechargeable battery, a microcontroller U1, a photovoltaic charging interface circuit, a TYPE-C charging circuit, a boost circuit, a sound alarm circuit, a light emitting alarm circuit and a smoke detection circuit; the photovoltaic panel is used for converting solar energy into electric energy and transmitting the electric energy to the rechargeable battery; the photovoltaic charging interface circuit is connected with the microcontroller U1 and the rechargeable battery, and the rechargeable battery provides power to the microcontroller U1; the TYPE-C charging circuit provides a TYPE-C charging interface, and the boost circuit is used for increasing the voltage of the rechargeable battery to +5V and providing a USB charging interface; the smoke detection circuit is used for detecting smoke information in the surrounding environment and sending the smoke information to the microcontroller U1.

[0026] The solar-powered outdoor smoke alarm circuit of the utility model has the advantages that the internal battery can be charged by a self-contained solar photovoltaic panel or a USB and can be used as an emergency power source to charge an outdoor mobile phone. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The utility model is a circuit framework diagram of a solar-powered outdoor smoke alarm circuit.

[0028] Figure 2 This is a circuit diagram of a solar-powered microcontroller U1 of the utility model.

[0029] Figure 3 The utility model discloses a circuit diagram of a photovoltaic charging interface circuit of a solar-powered outdoor smoke alarm circuit.

[0030] Figure 4 The utility model is a circuit diagram of a TYPE-C charging circuit of a solar-powered outdoor smoke alarm circuit.

[0031] Figure 5 The utility model discloses a circuit diagram of a boost circuit of a solar-powered outdoor smoke alarm circuit.

[0032] Figure 6 The utility model discloses a circuit diagram of a sound alarm circuit of a solar-powered outdoor smoke alarm circuit.

[0033] Figure 7 The utility model discloses a circuit diagram of a luminous alarm circuit of a solar-powered outdoor smoke alarm circuit.

[0034] Figure 8 The utility model discloses a circuit diagram of the first part of the smoke detection circuit of the solar-powered outdoor smoke alarm circuit.

[0035] Fig. 9 The utility model is a circuit diagram of the second part of the smoke detection circuit of the solar-powered outdoor smoke alarm circuit.

[0036] The present invention is further described below through specific implementation methods in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0037] See also Figures 1 to 9 The utility model discloses a solar-powered outdoor smoke alarm circuit, comprising a photovoltaic panel, a rechargeable battery BT1, a microcontroller U1, a photovoltaic charging interface circuit, a TYPE-C charging circuit, a boost circuit, a sound alarm circuit, a light-emitting alarm circuit and a smoke detection circuit;

[0038] The photovoltaic panel is used to convert solar energy into electrical energy and charge the rechargeable battery BT1; the photovoltaic charging interface circuit is connected to the microcontroller U1 and the rechargeable battery, and the rechargeable battery provides power for the microcontroller U1, the boost circuit, the sound alarm circuit and the smoke detection circuit;

[0039] The photovoltaic charging interface circuit, TYPE-C charging circuit, boost circuit, sound alarm circuit, light emitting alarm circuit and smoke detection circuit are all connected to the microcontroller U1;

[0040] The TYPE-C charging circuit provides a TYPE-C charging interface, and the boost circuit is used to increase the voltage of the rechargeable battery to +5V and provide a USB charging interface;

[0041] The smoke detection circuit is used to detect smoke information in the surrounding environment and send the smoke information to the microcontroller U1;

[0042] The microcontroller U1 outputs a sound alarm signal to the sound alarm circuit, and the sound alarm circuit issues a sound alarm;

[0043] The microcontroller U1 outputs a luminous alarm signal to the luminous alarm circuit, and the luminous alarm circuit sends out a flash alarm.

[0044] like Figure 1 This is a framework diagram of a solar-powered outdoor smoke alarm circuit of the utility model, which adds a USB output interface and a TYPE-C charging interface for charging mobile phones. It can be charged by solar energy or USB, and can also charge mobile phones in emergencies. The photovoltaic panel is used to convert solar energy into electrical energy and charge the rechargeable battery BT1; the microcontroller U1 is connected to the rechargeable battery, and the rechargeable battery provides power for the microcontroller U1, the boost circuit, the sound alarm circuit, and the smoke detection circuit.

[0045] In a specific implementation, the microcontroller U1 is JZIC_SOP16.

[0046] like Figure 2 The circuit diagram of the microcontroller is shown in Figure 1. Figure 2 The microcontroller circuit includes a chip U1, a key switch S1 and a capacitor C8. The model of the microcontroller 1 is JZ8P2615-SOP16 (manufacturer is Wuxi Jingzhe Technology Co., Ltd., sales website: http: / / www.wxjzkj.com / about_product / MCUdpj053.html).

[0047] In a specific implementation, the photovoltaic charging interface circuit includes resistors R4-R5, a diode D1 and a connection terminal J2; one end of the resistor R4 is connected to the pin 4 of the microcontroller U1, and the other end of the resistor R4 is connected to the power supply terminal +VCC.

[0048] like Figure 3 This is the circuit diagram of the photovoltaic charging interface circuit. The connection relationship between the components is shown in Figure 3 The wiring terminal J2 is connected to the power output end of the photovoltaic panel.

[0049] In a specific implementation, the TYPE-C charging circuit includes a charging control chip U2, resistors R1-R3, capacitors C1-C2, a connection terminal J1 and a battery BT1.

[0050] like Figure 4 This is the circuit diagram of the TYPE-C charging circuit. The connection relationship between the components is shown in Figure 4. The model of the charging control chip U2 is FS4056. The battery BT1 is a 3.7V rechargeable battery. The positive terminal BAT+ of the battery BT1 is connected to other circuits and provides basic power for other circuits. Pin 7 of the charging control chip U2 is connected to pin 3 of the microcontroller U1. The terminal J1 is a TYPE-C charging interface. The positive terminal BAT+ of the battery BT1 is connected to pin 1 of the microcontroller U1.

[0051] FS4056 is a linear lithium battery charging IC with temperature protection. It adopts synchronous rectification technology and has the advantages of high efficiency, high reliability and low power consumption. FS4056 adopts synchronous rectification technology and has the following characteristics: (1) Wide input voltage range: 2.7V to 6.5V; (2) Large charging current: up to 1000MA; (3) Built-in MOS tube: The synchronous rectification structure of built-in MOS tube improves the charging efficiency; (4) Temperature protection: Built-in temperature protection function can protect the chip from overheating damage; (5) Complete protection function: It has input overvoltage protection, output overcurrent protection and other functions; (6) Suitable for mobile devices: small size, high integration, suitable for mobile devices and other miniaturized electronic products.

[0052] In a specific implementation, the boost circuit includes a boost chip U3, resistors R8 to R14, capacitors C4 to C7, an inductor L2, a diode D3, a field effect transistor Q3 and a terminal J3; one end of the resistor R12 is connected to pin 9 of the microcontroller U1, the gate of the field effect transistor Q3 and one end of the resistor R13 are both connected to pin 8 of the microcontroller U1, one end of the resistor R14 is connected to pin 15 of the microcontroller U1, and one end of the inductor L2 is connected to the positive terminal BAT+ of the battery BT1.

[0053] In a specific implementation, the boost chip U3 is a boost converter AP2004.

[0054] like Figure 5 The circuit diagram of the boost circuit is shown in Figure 1. The connection relationship between the components is shown in Figure 1. Figure 5 . The boost chip U3 is a boost converter AP2004. AP2004H is an asynchronous PWM boost converter in constant frequency peak current mode. An external Schottky diode (diode D3) is required. When the load is light, AP2004H operates in light load mode. The quiescent current is 100uA and the shutdown current is less than 1uA. The internal NMOS tube on-resistance is 130 megohms, ensuring high efficiency over the entire output load range. The 3A peak current enables AP2004H to provide 1.5A output load current. It is very suitable for MID and mobile power supplies.

[0055] In a specific implementation, the sound alarm circuit includes a buzzer BUZ, a resistor R6, a capacitor C3, an inductor L1, a diode D2 and transistors Q1-Q2.

[0056] like Figure 6 This is the circuit diagram of the sound alarm circuit. The connection relationship between the components is shown in Figure 6 One end of the resistor R6 is connected to the pin 5 of the microcontroller U1, and one end of the buzzer BUZ is connected to the positive terminal BAT+ of the battery BT1. When the resistor R6 receives the sound alarm signal of the microcontroller U1, the buzzer BUZ sounds a sound alarm.

[0057] In specific implementation, the light emitting alarm circuit includes a light emitting diode LED1 and a resistor R7; one end of the resistor R7 is connected to pin 7 of the microcontroller U1, the other end of the resistor R7 is connected to the positive electrode of the light emitting diode LED1, and the negative electrode of the light emitting diode LED1 is grounded.

[0058] like Figure 7 This is the circuit diagram of the luminous alarm circuit. The connection relationship between the components is shown in Figure 7 When the resistor R7 receives the light emitting alarm signal from the microcontroller U1, the light emitting diode LED1 lights up.

[0059] In a specific implementation, the smoke detection circuit includes an operational amplifier U4, resistors R15-R26, capacitors C9-C14, a light emitting diode LED2, a diode D4, and a transistor Q4.

[0060] During specific implementation, the operational amplifier U4 is an operational amplifier CA358.

[0061] like Figure 8-9 The circuit diagram of the smoke detection circuit is as follows: Figure 8 For the first part of the smoke detection circuit, such as Fig. 9 This is the second part of the smoke detection circuit. The connection relationship between the components is shown in Figure 8-9 One end of the resistor R16 is connected to the pin 6 of the microcontroller U1, and the resistor R15 is connected to the positive terminal BAT+ of the battery BT1. The pin 8 of the operational amplifier U4 is connected to the pin 10 of the microcontroller U1, and the pin 10 of the microcontroller U1 is also connected between the resistor R24 ​​and the capacitor C11, and the pin 14 of the microcontroller U1 is also connected between the resistor R26 and the capacitor C10. The diode D4 is an infrared receiving diode used to detect smoke.

[0062] The utility model discloses a solar-powered outdoor smoke alarm circuit, which can use a self-contained solar photovoltaic panel or a USB interface to charge an internal battery, and can also be used as an emergency power source to charge an outdoor mobile phone.

[0063] It is obvious 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 regarded as exemplary and non-restrictive from any point of view, 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. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0064] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A solar-powered outdoor smoke alarm circuit, characterized in that: It includes photovoltaic panels, rechargeable battery BT1, microcontroller U1, photovoltaic charging interface circuit, TYPE-C charging circuit, boost circuit, sound alarm circuit, light alarm circuit and smoke detection circuit; The photovoltaic panel is used to convert solar energy into electrical energy and charge the rechargeable battery BT1; the photovoltaic charging interface circuit is connected to the microcontroller U1 and the rechargeable battery, and the rechargeable battery provides power for the microcontroller U1, the boost circuit, the sound alarm circuit and the smoke detection circuit; The photovoltaic charging interface circuit, TYPE-C charging circuit, boost circuit, sound alarm circuit, light emitting alarm circuit and smoke detection circuit are all connected to the microcontroller U1; The TYPE-C charging circuit provides a TYPE-C charging interface, and the boost circuit is used to increase the voltage of the rechargeable battery to +5V and provide a USB charging interface; The smoke detection circuit is used to detect smoke information in the surrounding environment and send the smoke information to the microcontroller U1; The microcontroller U1 outputs a sound alarm signal to the sound alarm circuit, and the sound alarm circuit issues a sound alarm; The microcontroller U1 outputs a luminous alarm signal to the luminous alarm circuit, and the luminous alarm circuit sends out a flash alarm.

2. A solar-powered outdoor smoke alarm circuit according to claim 1, characterized in that: The microcontroller U1 is JZIC_SOP16.

3. A solar-powered outdoor smoke alarm circuit according to claim 1, characterized in that: The photovoltaic charging interface circuit includes resistors R4-R5, a diode D1 and a connection terminal J2; one end of the resistor R4 is connected to the pin 4 of the microcontroller U1, and the other end of the resistor R4 is connected to the power supply terminal +VCC.

4. A solar-powered outdoor smoke alarm circuit according to claim 1, characterized in that: The TYPE-C charging circuit includes a charging control chip U2, resistors R1-R3, capacitors C1-C2, a connection terminal J1 and a battery BT1.

5. A solar-powered outdoor smoke alarm circuit according to claim 1, characterized in that: The boost circuit includes a boost chip U3, resistors R8~R14, capacitors C4~C7, an inductor L2, a diode D3, a field effect transistor Q3 and a terminal J3; one end of the resistor R12 is connected to pin 9 of the microcontroller U1, the gate of the field effect transistor Q3 and one end of the resistor R13 are both connected to pin 8 of the microcontroller U1, one end of the resistor R14 is connected to pin 15 of the microcontroller U1, and one end of the inductor L2 is connected to the positive terminal BAT+ of the battery BT1.

6. A solar-powered outdoor smoke alarm circuit according to claim 5, characterized in that: The boost chip U3 is a boost converter AP2004.

7. A solar-powered outdoor smoke alarm circuit according to claim 1, characterized in that: The sound alarm circuit comprises a buzzer BUZ, a resistor R6, a capacitor C3, an inductor L1, a diode D2 and transistors Q1-Q2.

8. A solar-powered outdoor smoke alarm circuit according to claim 1, characterized in that: The light emitting alarm circuit comprises a light emitting diode LED1 and a resistor R7; one end of the resistor R7 is connected to pin 7 of the microcontroller U1, the other end of the resistor R7 is connected to the positive electrode of the light emitting diode LED1, and the negative electrode of the light emitting diode LED1 is grounded.

9. A solar-powered outdoor smoke alarm circuit according to claim 1, characterized in that: The smoke detection circuit includes an operational amplifier U4, resistors R15-R26, capacitors C9-C14, a light emitting diode LED2, a diode D4, and a transistor Q4.

10. A solar-powered outdoor smoke alarm circuit according to claim 9, characterized in that: The operational amplifier U4 is an operational amplifier CA358.

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