Voice type carbon monoxide combustible gas alarm

Abstract

The utility model discloses a voice type carbon monoxide combustible gas alarm. The voice type carbon monoxide combustible gas alarm comprises a bottom shell, a face shell connected with the bottom shell in a buckling mode, an antenna assembly arranged on one side of the face shell, a display screen, a PC transparent plate, a PCB assembly and a buzzing piece, wherein the display screen and the PC transparent plate are arranged on the face shell, and the PCB assembly and the buzzing piece are arranged between the bottom shell and the face shell. The PCB assembly comprises a PCB, and a main control circuit, a voice synthesis output circuit, a CO sensor circuit, a CAT1 module circuit, a wireless communication module, an LED output circuit, an anti-disassembly circuit, a relay output circuit, a historical record output circuit and a power supply circuit which are arranged on the PCB; the corresponding end of the master control circuit is electrically connected with the corresponding ends of the display screen, the voice synthesis output circuit, the CO sensor circuit, the CAT1 module circuit, the wireless communication module, the LED output circuit, the anti-disassembly circuit, the relay output circuit, the historical record output circuit and the power supply circuit.

Description

Technical Field

[0001] The utility model relates to the technical field of alarms, and particularly relates to a voice type carbon monoxide combustible gas alarm. Background Art

[0002] Carbon monoxide is a colorless, odorless, and tasteless toxic gas, which is easily overlooked and can lead to poisoning accidents. Therefore, in multiple fields and places such as mines, parking lots, chemical industries, and municipal construction, the real-time monitoring and alarming of carbon monoxide concentration are particularly important. Traditional carbon monoxide alarms only prompt users through sound and light alarms. However, in some cases (such as when users are sleeping soundly or have hearing impairments), this method may not be able to effectively wake up users.

[0003] Limitations of existing monitoring technologies:

[0004] Hearing limitation: In a noisy environment or for users with hearing impairments, the sound alarm may not be sufficient to attract attention.

[0005] Unclear information: Traditional alarms cannot provide specific carbon monoxide concentration information, making it difficult for users to judge the severity of the situation.

[0006] Alarm method: Traditional alarms mainly rely on sound and light alarms, that is, they use sound and light to remind people. However, in a noisy or visually obstructed environment, the sound and light alarm cannot effectively convey the alarm information.

[0007] User interaction: Traditional alarms usually lack an intuitive user interface, and it is difficult for users to obtain detailed gas concentration information and device status.

[0008] Remote monitoring: Alarms in the existing technology often lack remote monitoring and control functions, which limits their application in intelligent buildings and industrial automation systems. Content of the Utility Model

[0009] In view of the problems existing in the prior art, the utility model provides a voice type carbon monoxide combustible gas alarm.

[0010] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0011] The utility model provides a voice type carbon monoxide combustible gas alarm, including: a bottom case, a front case connected to the bottom case by a buckle, an antenna assembly arranged on one side of the front case, a display screen and a PC transparent plate arranged on the front case, a PCB board assembly and a buzzer sheet arranged between the bottom case and the front case, a leak-proof installation switch assembly and a power supply assembly arranged on the bottom case;

[0012] The PCB board assembly includes a PCB board, as well as a main control circuit, a voice synthesis output circuit, a CO sensor circuit, a CAT1 module circuit, a wireless communication module, an LED output circuit, an anti-tamper circuit, a relay output circuit, a historical record output circuit, and a power supply circuit provided on the PCB board;

[0013] The corresponding ends of the main control circuit are electrically connected to the corresponding ends of a display screen, a voice synthesis output circuit, a CO sensor circuit, a CAT1 module circuit, a wireless communication module, an LED output circuit, an anti-tamper circuit, a relay output circuit, a historical record output circuit, and a power supply circuit respectively.

[0014] Preferably, the power supply assembly includes a battery, and a positive electrode piece and a negative electrode elastic piece or a positive electrode elastic piece and a negative electrode piece provided at the positive and negative electrodes of the battery; the anti-missing installation switch assembly includes an anti-missing installation switch and a switch pressing rod installed on the anti-missing installation switch.

[0015] Preferably, three battery installation positions are provided on the bottom case, and each battery installation position is provided on one side of the bottom case for installing a battery; a battery installation board is also installed at the bottom of the bottom case.

[0016] Preferably, the main control circuit includes an MCU and its peripheral circuit, and the model of the MCU is LQFP48.

[0017] Preferably, the power supply circuit includes a battery power supply circuit, a battery voltage sampling circuit, an MCU power supply circuit, a CAT1 power supply circuit, and a Bluetooth module power supply circuit;

[0018] The corresponding ends of the battery power supply circuit are electrically connected to the corresponding ends of the battery, the battery voltage sampling circuit, the MCU power supply circuit, the CAT1 power supply circuit, the Bluetooth module power supply circuit, and the MCU respectively;

[0019] The corresponding ends of the MCU are electrically connected to the corresponding ends of the battery voltage sampling circuit, the MCU power supply circuit, the CAT1 power supply circuit, and the Bluetooth module power supply circuit respectively.

[0020] Preferably, the voice synthesis output circuit includes a voice chip and its peripheral circuit, and a speaker electrically connected to the corresponding end of the voice chip; the corresponding end of the voice chip is electrically connected to the corresponding end of the MCU.

[0021] Preferably, the CO sensor circuit includes an ME1-CO sensor, an ME2-CO sensor, a resistor R14, a resistor R20, a resistor R21, a resistor R22, a resistor R31, a resistor R35, a thermistor RT, a capacitor C2, a capacitor C3, a capacitor C5, a capacitor C14, a capacitor C17, and an operational amplifier U3. The first end of the resistor R3 is electrically connected to the corresponding end of the MCU, and the second end is respectively electrically connected to the first end of the capacitor C2, the first end of the resistor R35, the first end of the ME1-CO sensor, the first end of the resistor R20, the first end of the ME2-CO sensor, the first end of the capacitor C5, and the non-inverting input terminal of the operational amplifier U3. The second end of the capacitor C2 is respectively connected to the second end of the resistor R35, the first end of the capacitor C14, and the first end of the capacitor C17. The second end of the capacitor C14 is electrically connected to the 5th pin of the operational amplifier U3. The inverting input terminal of the operational amplifier U3 is respectively electrically connected to the second end of the capacitor C5, the first end of the capacitor C3, the first end of the resistor R14, and the first end of the resistor R21. The other end of the resistor R21 is respectively electrically connected to the second end of the ME1-CO sensor, the second end of the resistor R20, the second end of the ME2-CO sensor, and the corresponding end of the MCU. The output terminal of the operational amplifier U3 is respectively electrically connected to the second end of the capacitor C3, the first end of the thermistor RT, and the first end of the resistor R22. The second end of the thermistor RT is electrically connected to the second end of the resistor R14. The second end of the resistor R22 is respectively electrically connected to the corresponding end of the MCU and the second end of the capacitor C17.

[0022] Preferably, the wireless communication module is set as one of Bluetooth, WIFI, 2G / 3G / 4G / 5G.

[0023] Preferably, the CAT1 module circuit includes an ML307A chip and its peripheral circuit, and the corresponding ends of the ML307A chip are respectively electrically connected to the antenna assembly and the corresponding ends of the CAT1 power supply circuit.

[0024] Preferably, the voice type carbon monoxide combustible gas alarm further includes an AT serial port circuit, a clock circuit, and a program download circuit. The corresponding ends of the MCU are respectively electrically connected to the corresponding ends of the AT serial port circuit, the clock circuit, and the program download circuit, and the corresponding end of the AT serial port circuit is also electrically connected to the corresponding end of the ML307A chip.

[0025] Adopting the technical solution of the present utility model has the following beneficial effects:

[0026] 1. Immediate and intuitive alarm: The voice type carbon monoxide alarm can convey dangerous information to users immediately and intuitively through voice broadcast. Compared with traditional sound and light alarms, voice alarms can attract users' attention more. Especially when the user is in a sleeping state or the environment is noisy, voice alarms can ensure that users receive dangerous signals in a timely manner.

[0027] 2. Improve safety: Since carbon monoxide is a colorless, odorless, and tasteless gas, it is very difficult for humans to directly perceive it. The voice-activated carbon monoxide alarm can continuously monitor the carbon monoxide concentration in the indoor or specific environment and immediately issue an alarm when the concentration exceeds the standard, thus effectively preventing the occurrence of carbon monoxide poisoning accidents and improving the safety of users.

[0028] 3. Convenient operation and settings: The voice-activated carbon monoxide alarm also has a voice control function. Users can use voice commands to query the current carbon monoxide concentration, set the alarm threshold, or start the exhaust system, etc. This convenient operation method enables users to manage and use the alarm more conveniently, improving the usability of the device.

[0029] 4. Adapt to different user groups: The voice-activated carbon monoxide alarm is suitable for users of all ages and different physical conditions. For the elderly, children, or users with poor eyesight, voice alarms are more user-friendly and easier to understand. At the same time, some advanced models also support remote monitoring and alarm functions, making it convenient for users to keep track of the safety situation at home even when they are away.

[0030] 5. Intelligence and connectivity: With the development of Internet of Things technology, the voice-activated carbon monoxide alarm can be interconnected with the smart home system or other security devices to achieve more intelligent safety monitoring and emergency response. For example, when the alarm detects that the carbon monoxide concentration exceeds the standard, it can automatically start the exhaust system, send text messages to family members or emergency contacts, etc.

[0031] The alarm of the present utility model can issue clear voice warnings, which can attract attention even in a noisy environment or when the user is sound asleep. The alarm supports multiple languages, meeting the needs of different user groups and improving the popularity and practicality of the alarm.

[0032] The wireless communication module allows users to remotely monitor and control the alarm through a smartphone or other devices, enhancing the flexibility of the alarm and its ability to integrate with the smart home; through the program download circuit and the AT serial port circuit, the firmware of the alarm can be easily updated to fix problems or add new functions, improving the long-term usability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of the present utility model;

[0034] Figure 2 is an exploded view of the structure of the present utility model;

[0035] Figure 3 is a control module diagram of the present utility model;

[0036] Figure 4 is a schematic diagram of the main control circuit of the present utility model;

[0037] Figure 5 This is the schematic diagram of the voice output synthesis circuit of the present utility model;

[0038] Figure 6 This is the schematic diagram of the CO sensor circuit of the present utility model;

[0039] Figure 7 This is the schematic diagram of the CAT1 module circuit of the present utility model;

[0040] Figure 8 This is the schematic diagram of the anti-tampering circuit of the present utility model;

[0041] Figure 9 This is the schematic diagram of the LED output circuit of the present utility model;

[0042] Figure 10 This is the schematic diagram of the relay output circuit of the present utility model;

[0043] Figure 11 This is the schematic diagram of the historical record output circuit of the present utility model;

[0044] Figure 12 This is the schematic diagram of the power supply circuit of the present utility model;

[0045] Figure 13 This is the schematic diagram of the program download circuit of the present utility model;

[0046] Figure 14 This is the schematic diagram of the clock circuit of the present utility model;

[0047] Figure 15 This is the schematic diagram of the AT serial port circuit of the present utility model. Detailed implementation manners

[0048] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0049] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0050] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0051] In the present utility model, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0052] In the present utility model, unless otherwise clearly defined and limited, the fact that the first feature is "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the fact that the first feature is "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The fact that the first feature is "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0053] Refer to Figures 1 to 15, the present utility model provides a voice - type carbon monoxide combustible gas alarm, comprising: a bottom case 13, a face case 2 connected to the bottom case 13 by means of a buckle, an antenna assembly 3 disposed on one side of the face case 2, a display screen 250 and a PC transparent plate 1 disposed on the face case 2, a PCB board assembly 6 and a buzzer sheet 5 disposed between the bottom case 13 and the face case 2, a leak - proof installation switch assembly and a power supply assembly disposed on the bottom case 13; an operation button is further installed on the face case 2; wherein the bottom case 13 is the main structural part of the alarm, providing physical support and protection for the internal circuits and components. It is usually made of a sturdy material to ensure the durability and stability of the device; the snap - connection between the bottom case 13 and the face case 2 makes the face case easy to disassemble, facilitating maintenance and repair; the antenna assembly 3 is responsible for receiving and transmitting wireless signals, enabling the alarm to perform remote communication, such as sending alarm information or receiving remote instructions through a wireless network; the display screen 250 is set as a multi - language display screen, used to show important information to the user, such as the current carbon monoxide concentration, alarm status, battery power, providing clear and easy - to - read information, and a multi - language button is set to facilitate the user to switch between different languages; the buzzer sheet 5 is used to emit a sound alarm. When the CO sensor circuit 300 detects that the carbon monoxide concentration exceeds the standard, the buzzer sheet 5 will emit a sound to alert the user.

[0054] The PCB board assembly 6 includes a PCB board, as well as a main control circuit 100, a voice synthesis output circuit 200, a CO sensor circuit 300, a CAT1 module circuit 400, a wireless communication module 150, an LED output circuit 600, an anti-disassembly circuit 500, a relay output circuit 700, a historical record output circuit 800, and a power supply circuit 900 provided on the PCB board; corresponding ends of the main control circuit 100 are electrically connected to corresponding ends of a display screen 250, the voice synthesis output circuit 200, the CO sensor circuit 300, the CAT1 module circuit 400, the wireless communication module, the LED output circuit 600, the anti-disassembly circuit 500, the relay output circuit 700, the historical record output circuit 800, and the power supply circuit 900; the main control circuit 100 serves as the control center of the alarm, responsible for processing CO sensor signals, controlling the operations of other circuit modules, and realizing interaction with the user interface; the CO sensor circuit 300: detects the carbon monoxide concentration in the environment and sends the signal to the MCU after circuit processing. The wireless communication module: supports multiple wireless communication methods, enabling the alarm to communicate and be controlled remotely. The CAT1 module circuit: realizes 4G network communication, enhancing the remote communication ability of the alarm. The LED output circuit: when the carbon monoxide concentration exceeds the standard, emits a visual signal through the LED light, providing an intuitive alarm method. The anti-disassembly circuit: prevents the alarm from being illegally disassembled, improving safety. The relay output circuit: controls the switch of external devices (such as an exhaust fan), automatically reducing the carbon monoxide concentration. The historical record output circuit: records and stores the historical data of the carbon monoxide concentration, facilitating user query and analysis.

[0055] Further, the power supply component includes a battery 15, as well as a positive electrode piece 10 and a negative electrode elastic piece 7 or a positive electrode elastic piece 8 and a negative electrode piece 9 provided at the positive and negative electrodes of the battery; the positive electrode piece 10 and the negative electrode elastic piece 7 or the positive electrode elastic piece 8 and the negative electrode piece 9 are used to contact the positive and negative electrodes of the battery to form a closed path of the circuit, thereby transmitting electrical energy to various parts of the alarm. The design of the positive and negative electrode pieces needs to ensure good electrical contact, and at the same time consider durability and corrosion resistance to maintain long-term stable connection. The anti-missing installation switch component includes an anti-missing installation switch 12 and a switch lever 11 installed on the anti-missing installation switch 12. The anti-missing installation switch 12 is a safety device used to ensure that the alarm can be started only after the battery is correctly installed. This switch can prevent the alarm from malfunctioning when there is no battery or the battery is not correctly installed, thereby avoiding unnecessary alarms or equipment damage; the design of the switch lever needs to ensure that the anti-missing installation switch can be stably triggered when the battery is correctly installed, while avoiding accidental triggering caused by vibration or misoperation.

[0056] Further, three battery installation positions are provided on the bottom case 13, and each battery installation position is provided on one side of the bottom case for installing the battery 15; a battery installation plate 16 is further installed at the bottom of the bottom case 13; three battery installation positions are provided on the bottom case 13, and these installation positions are evenly distributed on one side of the bottom case 13. Such a design allows the alarm to use multiple batteries as a power source to provide the necessary power to support the continuous operation of the alarm.

[0057] Further, the main control circuit 100 includes an MCU and its peripheral circuits, and the model of the MCU is LQFP48; the MCU is responsible for processing sensor signals, controlling the operation of other circuit modules, and realizing the interaction with the user interface;

[0058] The MCU is the brain of the alarm, responsible for receiving signals from the carbon monoxide sensor, processing these signals, and deciding whether to trigger an alarm according to the preset logic. In addition, the MCU also controls the information display on the display screen, manages the data transmission of the wireless communication module 150, etc.; the MCU monitors the data of the carbon monoxide sensor in real time and quickly responds to environmental changes. According to the monitoring results, it judges whether an alarm needs to be triggered and issues an alarm through the voice synthesis output circuit and / or the buzzer sheet. Through the display screen user interface, real-time information is provided and user input is accepted to enhance the user experience.

[0059] Further, the power supply circuit 900 includes a battery power supply circuit 901, a battery voltage sampling circuit 905, an MCU power supply circuit 903, a CAT1 power supply circuit 902, and a Bluetooth module power supply circuit 904; the corresponding ends of the battery power supply circuit 901 are electrically connected to the battery 15, the battery voltage sampling circuit 905, the MCU power supply circuit 903, the CAT1 power supply circuit 902, the Bluetooth module power supply circuit 904, and the corresponding ends of the MCU respectively; the corresponding ends of the MCU are electrically connected to the corresponding ends of the battery voltage sampling circuit, the MCU power supply circuit 903, the CAT1 power supply circuit 902, and the Bluetooth module power supply circuit 904 respectively.

[0060] Further, the voice synthesis output circuit 200 includes a voice chip and its peripheral circuits, and a speaker electrically connected to the corresponding end of the voice chip; the corresponding end of the voice chip is electrically connected to the corresponding end of the MCU; the voice synthesis output circuit 200 supports voice synthesis in multiple languages (such as Chinese, Uyghur, Kazakh, etc.) to meet the needs of different users; when the carbon monoxide concentration exceeds the standard, a clear voice alarm is issued through the voice synthesis output circuit to provide intuitive warning information. By using a text-to-speech engine, voice synthesis in multiple languages can be supported to adapt to the needs of different users. The voice output circuit can be used for interaction with users, such as providing operation prompts, status information, etc. When the alarm is working, the MCU will send instructions to the voice chip according to the CO sensor data and the preset logic to trigger voice synthesis and output.

[0061] Further, the CO sensor circuit 300 includes an ME1-CO sensor, an ME2-CO sensor, a resistor R14, a resistor R20, a resistor R21, a resistor R22, a resistor R31, a resistor R35, a thermistor RT, a capacitor C2, a capacitor C3, a capacitor C5, a capacitor C14, a capacitor C17, and an operational amplifier U3. The first end of the resistor R3 is electrically connected to the corresponding end of the MCU, and the second end is respectively electrically connected to the first end of the capacitor C2, the first end of the resistor R35, the first end of the ME1-CO sensor, the first end of the resistor R20, the first end of the ME2-CO sensor, the first end of the capacitor C5, and the non-inverting input terminal of the operational amplifier U3. The second end of the capacitor C2 is respectively connected to the second end of the resistor R35, the first end of the capacitor C14, and the first end of the capacitor C17. The second end of the capacitor C14 is electrically connected to the 5th pin of the operational amplifier U3. The inverting input terminal of the operational amplifier U3 is respectively electrically connected to the second end of the capacitor C5, the first end of the capacitor C3, the first end of the resistor R14, and the first end of the resistor R21. The other end of the resistor R21 is respectively electrically connected to the second end of the ME1-CO sensor, the second end of the resistor R20, the second end of the ME2-CO sensor, and the corresponding end of the MCU. The output terminal of the operational amplifier U3 is respectively electrically connected to the second end of the capacitor C3, the first end of the thermistor RT, and the first end of the resistor R22. The second end of the thermistor RT is electrically connected to the second end of the resistor R14. The second end of the resistor R22 is respectively electrically connected to the corresponding end of the MCU and the second end of the capacitor C17. The CO sensor circuit 300 detects the concentration of carbon monoxide by generating an electrical signal through a chemical reaction between carbon monoxide and the chemical substances or electrodes inside the sensor. It has a relatively fast response time and high stability, and is suitable for occasions that require real-time monitoring. The ME1-CO sensor and the ME2-CO sensor are used to detect the concentration of carbon monoxide in the environment, and the signals are processed by components such as resistors, capacitors, and operational amplifiers, and the processed signals are sent to the MCU. The alarm is equipped with highly sensitive CO sensors such as electrochemical sensors, infrared sensors, or semiconductor sensors, which can monitor the concentration of carbon monoxide in the environment in real time.

[0062] Further, the wireless communication module 150 is set to be one of Bluetooth, WIFI, 2G / 3G / 4G / 5G to achieve interconnection with devices such as smartphones and smart home systems. Through the wireless communication module, users can remotely view the carbon monoxide concentration, receive alarm information, etc.

[0063] Further, the CAT1 module circuit 400 includes an ML307A chip and its peripheral circuits. The corresponding ends of the ML307A chip are electrically connected to the corresponding ends of the antenna assembly and the CAT1 power supply circuit respectively. The CAT1 module circuit is responsible for processing 4G network communication, enabling the alarm to send and receive data through the cellular network, enhancing the remote communication ability of the alarm. The alarm can achieve remote monitoring and control through the cellular network, such as remotely querying the carbon monoxide concentration, receiving alarm notifications, or remotely configuring the alarm settings. The CAT1 module circuit supports data transmission, enabling the alarm to send the monitoring data to a remote server or control center.

[0064] Further, the voice type carbon monoxide combustible gas alarm further includes an AT serial port circuit 1300, a clock circuit 1200, and a program download circuit 1100. The corresponding ends of the MCU are electrically connected to the corresponding ends of the AT serial port circuit 1300, the clock circuit 1200, and the program download circuit 1100 respectively. The corresponding end of the AT serial port circuit 1300 is also electrically connected to the corresponding end of the ML307A chip. The clock circuit 1200 provides an accurate time reference for the alarm, which is crucial for recording event logs, synchronizing sensor data, and performing timing tasks. It can be used to control the self-check program of the alarm, timing reports, and the switching of the low-power mode. The program download circuit allows users or manufacturers to update the firmware of the alarm to fix known problems, improve performance, or add new functions. It facilitates the necessary software upgrade of the alarm on-site without having to return to the manufacturer.

[0065] The working principle of the present utility model:

[0066] The alarm is equipped with a highly sensitive CO sensor circuit 300 that can monitor the carbon monoxide concentration in the environment in real time; the gas concentration signal detected by the sensor of the CO sensor circuit is converted into an electrical signal and then transmitted to the microcontroller unit (MCU); the MCU processes the signal, converts the analog signal into a digital signal, and compares it with a preset safety threshold; when the MCU detects that the carbon monoxide concentration exceeds the safety threshold, it activates the voice synthesis chip to convert the pre-stored alarm information or the alarm information synthesized through text-to-speech (TTS) technology into a voice signal; the voice signal is then amplified and played through the speaker to issue a clear and loud voice alarm, such as "Warning: The carbon monoxide concentration is too high. Please evacuate immediately"; users can interact with the alarm through the display screen on the alarm or through voice commands to query the current carbon monoxide concentration, adjust the alarm threshold, or make other settings. The alarm is built-in with a wireless communication module 150, allowing the alarm to connect to the Internet or communicate with mobile devices such as the user's smartphone. Through wireless communication, users can remotely monitor the status of the alarm, receive alarm notifications, and even remotely control the alarm. The alarm can be integrated with a smart home system or other safety devices (such as an exhaust system) to achieve automated emergency response. For example, when the detected carbon monoxide concentration exceeds the standard, the alarm can not only issue a voice alarm but also automatically start the exhaust system and send a notification to the user's mobile device at the same time.

[0067] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A voice-activated carbon monoxide combustible gas detector, characterized in that, Comprising: A bottom case, a front case connected to the bottom case by a snap-fastening method, an antenna assembly disposed on one side of the front case, a display screen and a PC transparent plate disposed on the front case, a PCB board assembly and a buzzer sheet disposed between the bottom case and the front case, a leak-proof installation switch assembly and a power supply assembly disposed on the bottom case; The PCB board assembly includes a PCB board, and a main control circuit, a voice synthesis output circuit, a CO sensor circuit, a CAT1 module circuit, a wireless communication module, an LED output circuit, an anti-tampering circuit, a relay output circuit, a historical record output circuit, and a power supply circuit disposed on the PCB board; The corresponding ends of the main control circuit are electrically connected to the corresponding ends of the display screen, the voice synthesis output circuit, the CO sensor circuit, the CAT1 module circuit, the wireless communication module, the LED output circuit, the anti-tampering circuit, the relay output circuit, the historical record output circuit, and the power supply circuit respectively.

2. The voice-type carbon monoxide combustible gas alarm according to claim 1, characterized in that, The power supply assembly includes a battery, and a positive electrode sheet and a negative electrode elastic sheet or a positive electrode elastic sheet and a negative electrode sheet disposed at the positive and negative electrodes of the battery; the leak-proof installation switch assembly includes a leak-proof installation switch and a switch pressure rod mounted on the leak-proof installation switch.

3. The voice-type carbon monoxide combustible gas alarm according to claim 2, characterized in that, Three battery installation positions are provided on the bottom case, and each battery installation position is provided on one side of the bottom case for installing a battery; a battery installation plate is further installed at the bottom of the bottom case.

4. The voice-type carbon monoxide combustible gas alarm according to claim 1, characterized in that, The main control circuit includes an MCU and its peripheral circuit, and the model of the MCU is LQFP48.

5. The voice type carbon monoxide combustible gas alarm according to claim 4, characterized in that, The power supply circuit includes a battery power supply circuit, a battery voltage sampling circuit, an MCU power supply circuit, a CAT1 power supply circuit, and a Bluetooth module power supply circuit; The corresponding ends of the battery power supply circuit are electrically connected to the corresponding ends of the battery, the battery voltage sampling circuit, the MCU power supply circuit, the CAT1 power supply circuit, the Bluetooth module power supply circuit, and the MCU respectively; The corresponding ends of the MCU are electrically connected to the corresponding ends of the battery voltage sampling circuit, the MCU power supply circuit, the CAT1 power supply circuit, and the Bluetooth module power supply circuit respectively.

6. The voice-type carbon monoxide combustible gas alarm according to claim 5, characterized in that, The voice synthesis output circuit includes a voice chip and its peripheral circuit, and a speaker electrically connected to the corresponding end of the voice chip; the corresponding end of the voice chip is electrically connected to the corresponding end of the MCU.

7. The voice type carbon monoxide combustible gas alarm according to claim 6, characterized in that, The CO sensor circuit includes an ME1-CO sensor, an ME2-CO sensor, a resistor R14, a resistor R20, a resistor R21, a resistor R22, a resistor R31, a resistor R35, a thermistor RT, a capacitor C2, a capacitor C3, a capacitor C5, a capacitor C14, a capacitor C17, and an operational amplifier U3. The first end of the resistor R3 is electrically connected to the corresponding end of the MCU, and the second end is respectively electrically connected to the first end of the capacitor C2, the first end of the resistor R35, the first end of the ME1-CO sensor, the first end of the resistor R20, the first end of the ME2-CO sensor, the first end of the capacitor C5, and the non-inverting input terminal of the operational amplifier U3. The second end of the capacitor C2 is respectively connected to the second end of the resistor R35, the first end of the capacitor C14, and the first end of the capacitor C17. The second end of the capacitor C14 is electrically connected to the 5th pin of the operational amplifier U3. The inverting input terminal of the operational amplifier U3 is respectively electrically connected to the second end of the capacitor C5, the first end of the capacitor C3, the first end of the resistor R14, and the first end of the resistor R21. The other end of the resistor R21 is respectively electrically connected to the second end of the ME1-CO sensor, the second end of the resistor R20, the second end of the ME2-CO sensor, and the corresponding end of the MCU. The output terminal of the operational amplifier U3 is respectively electrically connected to the second end of the capacitor C3, the first end of the thermistor RT, and the first end of the resistor R22. The second end of the thermistor RT is electrically connected to the second end of the resistor R14. The second end of the resistor R22 is respectively electrically connected to the corresponding end of the MCU and the second end of the capacitor C17.

8. The voice-type carbon monoxide combustible gas alarm according to claim 1, characterized in that, The wireless communication module is set to be one of Bluetooth, WIFI, 2G / 3G / 4G / 5G.

9. The voice-type carbon monoxide combustible gas alarm according to claim 5, characterized in that, The CAT1 module circuit includes an ML307A chip and its peripheral circuit, and the corresponding ends of the ML307A chip are respectively electrically connected to the antenna assembly and the corresponding ends of the CAT1 power supply circuit.

10. The voice-type carbon monoxide combustible gas alarm according to claim 9, characterized in that, The voice type carbon monoxide combustible gas alarm also includes an AT serial port circuit, a clock circuit, and a program download circuit. The corresponding end of the MCU is respectively electrically connected to the corresponding ends of the AT serial port circuit, the clock circuit, and the program download circuit, and the corresponding end of the AT serial port circuit is also electrically connected to the corresponding end of the ML307A chip.

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