Intelligent alarm device system

Abstract

The utility model discloses an intelligent alarm device system which comprises a main control chip module, a microphone driving module, a buzzer driving module, an audio management module, a memory management module, a power management module, a lithium battery charging management module and an RF antenna. According to the utility model, the collected sound can be analyzed, the analog signal of the sound is converted into the digital signal, whether the collected sound signal is abnormal sound is judged, and finally the early warning signal is sent to the mobile phone of a user in real time, so that the production cost is reduced, the installation is convenient, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the field of Internet of Things smart homes, and in particular to an intelligent alarm device system. Background Art

[0002] With the progress of society and the continuous innovation and development of technology, security technology has made significant progress and achievements. With the invention and application of electrical technology, it has brought new development directions for security technology. First, the invention of telegraph and telephone systems, through the connection of cables to transmit information, can enable people to receive early warning or alarm signals from far away, greatly improving the timeliness of early warning. Later, the invention of wireless signal transmission technology made the transmission of signals not limited by distance. Alarm signals can be received in time in any corner of the world.

[0003] Then the camera and video technology was invented, and the monitoring system using this technology was widely used in the security field. In the 1960s, a security system called CCTV (closed-circuit television) was invented. People can observe the captured images in real time through a black and white monitor connected to the camera. However, this system is expensive, complicated to install, and not stable enough. There are often problems such as signal loss and blurred images. It is gradually replaced by new equipment. With the rapid development of computer technology and network technology, as well as the emergence of big data and artificial intelligence technology, security alarm devices have become more intelligent, more lightweight, lower cost, and easier to install.

[0004] In general, the development of security technology is a process of continuous evolution and iteration. From relying on manpower and animals to electrification, and then to video surveillance, biometrics and intelligent systems, security technology is constantly innovating and progressing. Nowadays, a wide variety of security equipment on the market can meet the needs of various life scenarios. But the dazzling array of products also has their own advantages and disadvantages.

[0005] In the prior art, video surveillance is limited by the issues of privacy and portrait protection, and is not allowed to be installed in many places. At the same time, video surveillance stores large amounts of data and cannot store data information for a long time, making it inconvenient for users to check historical records. The magnetically controlled alarm device requires the installation of a matching magnet, which is not very convenient to install. The human infrared sensing alarm device has relatively high requirements for angles and distances. PIR human sensing has the problem of false alarms caused by animals or other moving objects, which brings unnecessary trouble to users and a poor user experience. Utility Model Content

[0006] The object of the present utility model is to overcome the defects of the prior art and provide an intelligent alarm device system, which can analyze the collected sound, convert the analog signal of the sound into a digital signal, determine whether the collected sound signal is an abnormal sound, and finally send the warning signal to the user's mobile phone in real time, reducing the production cost, being easy to install and improving the user experience.

[0007] The object of the present utility model is achieved as follows: An intelligent alarm device system, including a main control chip module, a microphone driver module, a buzzer driver module, an audio management module, a memory management module, a power management module, a lithium battery charging management module and an RF antenna;

[0008] The main control chip module is used to control the peripheral module circuits and perform data transmission. The main control chip module integrates an RF communication module inside to realize the functions of wireless signal transceiver;

[0009] The microphone driver module is used to collect sound signals, denoise the sound signals, amplify them and then transmit the useful analog sound signals to the main control chip module;

[0010] The audio management module is used to receive the digital sound signals sent by the main control chip module and convert the digital sound signals into analog signals required by the buzzer;

[0011] The buzzer driver module is used to start the buzzer to emit corresponding sounds according to the functions set by the system;

[0012] The memory management module is used to store various sound data emitted by the buzzer on the memory chip and call relevant sound data according to the system settings;

[0013] The power management module is used to convert the input alternating current into the direct current voltage required by the system;

[0014] The lithium battery charging management module is used to switch to battery power supply when the alternating current is cut off and supply power to the system through the lithium battery.

[0015] The utility model adopts the above technical solutions. Compared with the prior art, the beneficial effects are as follows: The utility model uses the daily household AC input, supports the range of 85VAC - 265VAC, and can meet the needs of global users. The power module circuit internally includes circuits such as rectification, step-down IC, and filtering, which convert the input AC power into the DC voltage required by this system. It adopts a wireless transmission method, having a longer transmission distance and lower power consumption; it adopts a rechargeable lithium battery power supply solution. When the mains power fails, it can continue to be powered by the lithium battery, and the working time can reach more than 14 hours. When the battery voltage drops, it will automatically charge; the buzzer module circuit uses power amplification to increase the volume of the sound. It uses Flash storage, supports the customization of various sounds, and can store up to 256 sound segments through software settings; the utility model has no special requirements for the installation environment and can be installed anywhere where installation is required; it adopts a low-cost sound detection solution, which plays an important role in daily security prevention, can prevent crimes, conduct real-time monitoring, and improve people's safety awareness; the small amount of sound data can save more data information, which greatly facilitates users to check historical records.

[0016] In order to facilitate users to understand in real time whether the system is working properly and to report repairs in a timely manner, the button and indicator light module is used for indicating the working state of the system. It judges whether the system is working normally or in a fault state by the colors shown by two indicator lights, one red and one green respectively; the button and indicator light module is electrically connected to the main control chip module.

[0017] Furthermore, the main control chip module is electrically connected to the microphone drive module, buzzer drive module, audio management module, memory management module, power management module, lithium battery charging management module, and also an RF antenna; the power management module is electrically connected to the lithium battery charging management module.

[0018] Furthermore, the main control chip module adopts an EFR32MG13P732F512GM48-DR microcontroller.

[0019] In order to detect weak sound signals and greatly improve the sensitivity of this system, the microphone drive module includes a microphone and a TPA2010D1YZF audio power amplification chip.

[0020] In order to be able to convert the analog signal of sound into the required digital signal in a timely manner, the audio management module adopts a PCM5100APW digital-to-analog conversion chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The principle block diagram of the utility model.

[0022] Figure 2Circuit diagram of the power management module of the present utility model.

[0023] Figure 3 Circuit diagram of the lithium battery charging management module of the present utility model.

[0024] Figure 4 Circuit diagram of the main control chip module of the present utility model.

[0025] Figure 5 Circuit diagram of the buzzer drive module of the present utility model.

[0026] Figure 6 Circuit diagram of the microphone drive module of the present utility model.

[0027] Figure 7 Circuit diagram of the audio management module of the present utility model.

[0028] Figure 8 Circuit diagram of the memory management module of the present utility model. Detailed implementation manners

[0029] Such as Figure 1 shown, an intelligent alarm device system includes a main control chip module, a microphone drive module, a buzzer drive module, an audio management module, a memory management module, a power management module, a lithium battery charging management module, and an RF antenna;

[0030] The main control chip module is used to control the peripheral module circuits and perform data transmission. An RF communication module is integrated inside the main control chip module to realize the functions of wireless signal transceiver; The main control chip module adopts an EFR32MG13P732F512GM48-DR microcontroller; It is a 32-bit ARM Cortex-M4 core, with a main frequency of up to 40MHz, 512KB of Flash, and 64KB of RAM;

[0031] The microphone drive module is used to collect sound signals, denoise the sound signals, and after amplification, transmit the useful analog sound signals to the main control chip module;

[0032] The audio management module is used to receive the digital sound signals sent by the main control chip module and convert the digital sound signals into analog signals required by the buzzer; The audio management module adopts a PCM5100APW digital-to-analog conversion chip;

[0033] The buzzer drive module is used to start the buzzer to emit corresponding sounds according to the functions set by the system;

[0034] The memory management module is used to save various sound data emitted by the buzzer on the memory chip and call relevant sound data according to the system settings;

[0035] The power management module is used to convert the input alternating current into the direct current voltage required by the system;

[0036] The lithium battery charging management module is used to switch to battery power supply when the alternating current power fails, and supply power to the system through the lithium battery;

[0037] The key and indicator light module is used for indicating the working state of the system. It judges whether the system is working normally or in a fault state by the colors shown by two indicator lights, one red and one green respectively; The key and indicator light module is electrically connected to the main control chip module;

[0038] The main control chip module is electrically connected to the microphone driver module, buzzer driver module, audio management module, memory management module, power management module, lithium battery charging management module, and also the RF antenna; The power management module is electrically connected to the lithium battery charging management module.

[0039] As Figure 2 shown, the system adopts strong alternating current input. The two-core pluggable wire is connected to the J1 wiring terminal of the product with screws, passes through the fuse F1, and is electrically connected to the 4th pin of the power management chip U1 through a half-wave rectification and filtering circuit composed of the capacitor C1, resistor R1, resistor R2, resistor R3, diode D1, diode D2, capacitor C2, inductor L1, and capacitor C3. The output terminal outputs a stable direct current output voltage VCC through a circuit composed of the capacitor C4, resistor R5, capacitor C5, diode D3, inductor L2, diode D4, capacitor C6, capacitor C7, resistor R6, resistor R7, resistor R8, and zener diode D5. The PWRSTATUS pin led out between the resistor R7 and resistor R8 is electrically connected to Figure 4 the 27th pin of the main chip control module shown. By reading the voltage of this pin, it can be judged whether the alternating current power fails, so that the lithium battery power supply circuit can start to work. VCC is connected to the Schottky diode D6, VBAT+ is connected to the Schottky diode D14, and is connected to the input of the voltage conversion chip U2 through the capacitor C8, resistor R9, and capacitor C9, outputting a stable 3.3V direct current voltage. The capacitors C10 and C11 play the role of filtering and voltage stabilization.

[0040] As Figure 3 shown, the lithium battery charging management module circuit adopts the professional lithium battery charging management chip ST L6924D. VCC is connected to the 1st and 2nd pins of the chip U3 after passing through the capacitor C12. The 3rd and 4th pins are connected to the 45th and 47th pins of Figure 4 the main control chip after passing through the pull-up resistors R10 and R11. The 5th pin is grounded after being connected in series with the capacitor C13. The 7th pin is connected to Figure 4It is connected to the 21st pin of the main control chip, grounded after being connected in series with the pull-down resistor R12, and the level of this pin is controlled by the main control chip to select the operation or shutdown of this charging management chip. The 11th pin is connected to the source S of the MOSFET of Q1 for the charging output voltage, and the drain D is connected to VBAT+, which is connected to Figure 2 the VBAT+ lithium battery power supply inlet shown in the figure. C17 and C18 are filter capacitors. The gate G of Q1 is connected between the resistor R17 and the resistor R18, and the other end of the resistor R18 is connected to the drain D of Q2. The gate G is connected in series with the resistor R21 to BAT_EN. The capacitor C15 and the resistor R22 form an RC filter circuit, and the source S is grounded. BAT_EN is connected to Figure 4 the 25th pin of the main control chip. Whether a power outage occurs and it is necessary to immediately switch to battery power supply is judged by the state of this pin. The functions of the resistors R13, R14, the capacitor C16, the resistor R15, and the resistor R16 are to adjust the charging voltage. One path of the VOUT output is connected in series with the resistor R19, and after being connected to the filter circuit composed of the resistor R20 and the capacitor C14, it is connected to Figure 4 the 16th pin shown in the figure. The main control chip reads this voltage to judge the state of the charging voltage.

[0041] As Figure 4As shown, pins 1, 2, 3, 43, 44 and 12 of the main control chip U4 are connected to the J3 socket, which are the programming pins of this chip. Software programming and burning can be carried out by connecting to a burner through J3. Pin 9 is connected in series with the L8 inductor to the V_DCDC power supply. C37 and C38 are power filter capacitors. Pins 10 and 11 are connected to pins 1 and 3 of the Y2 crystal oscillator. Pins 2 and 4 of Y2 are ground pins. Pin 12 is the reset pin, connected to ground through the capacitor C36 and connected to VDD_ZB24 through the pull-up resistor R23. Pins 14, 15 and 16 are grounded. Pin 17 is the 2.4GHz antenna pin, connected to the filter circuit composed of the inductor L5, capacitor C31, inductor L6, capacitor C32, capacitor C33, capacitor C34, inductor L7 and capacitor C35 and then connected to the antenna ANT1 printed on the PCB board. Pin 18 is the power pin, connected to the capacitors C28, C29, inductor L4 and capacitor C30. Pin 19, TAMPER_STATUS, is used to detect the on-off state of the switch SW2. SW2 of the key and indicator light module is an elastic telescopic switch in contact with the shell of this product. When assembled, the state of the switch is closed, and when the lid is opened, the state of the switch is open. Therefore, the circuit composed of the resistors R49, R50 and the switch SW2 can judge the state of the switch through the level of TAMPER_STATUS. Because there is a risk of electric shock due to the high-voltage alternating current inside this product, this circuit plays a protective role. Pins 29 and 30 of the main control chip U4 are respectively connected in series with the resistors R25 and R24 and then connected to the green LED D8 and the red LED D7 of the key and indicator light module; Pin 34 is the power pin, connected to the capacitors C26, C27 and the bead FB1. Pins 35 and 36 are connected to the two pins of the crystal oscillator Y1. Pin 38 is the power pin, connected in series with L3. Pins 39 - 42 are all power pins, and C19 - C24 are for power filtering.

[0042] As Figure 5 shown, this circuit is the buzzer drive module circuit. PWM_BOOST and Figure 4It is connected to pin 32 of the main control chip U4. After passing through capacitor C40, diode D12, resistor R28, and resistor R29, it is respectively connected to the gate G of MOS transistor Q5 and the drain D of MOS transistor Q6. The +5V power supply is connected in series with inductor L9 and then respectively connected to the drain D of MOS transistor Q5 and the positive pole of buzzer BZ1 after Schottky diodes D9, D10, and D11 are connected in series. The source S of MOS transistor Q6 is grounded, and the gate G is connected to the positive pole of buzzer BZ1 after being connected in series with resistor R30 and zener diode D13. The source S of MOS transistor Q5 is grounded, and capacitor C46, capacitor C41, and resistor R31 are connected in parallel and respectively grounded. Three parallel resistors R33, R34, and R35 are connected in parallel between the positive and negative poles of buzzer BZ1. The negative pole of buzzer BZ1 is connected to the drain D of MOS transistor Q3, and the gate G is connected to Figure 4 pin 24 of the main control chip U4. The gate G and the source S are grounded after resistor R36 is connected in parallel. BUZZER_ALARM, that is, the alarm signal, is connected to Figure 4 pin 24 of the main control chip U4.

[0043] As Figure 6 shown, it is the microphone drive module circuit. The output pins VO+ and VO- of the analog microphone MIC1 are respectively connected to pins C3 and A3 of the TPA2010D1 audio amplifier chip U5 produced by TI. Pins 3 and 4 of the analog microphone MIC1 are grounded. B1 and B2 of chip U5 are connected to the +5V power supply. Pin A1 is grounded after being connected in series with resistor R38 and capacitor C43, and pins A2 and B3 are grounded. Pin C1 of chip U5 is connected to Figure 4 pin 48 of the main control chip U4 as the audio input interface. The sound signal is transmitted to the main chip for analysis and processing. Voiceprint recognition is performed according to the software settings to determine whether the detected sound is abnormal. If it is abnormal, an alarm will be issued through the buzzer and the alarm signal will be sent to the user's mobile phone through the antenna.

[0044] As Figure 7 shown, it is the audio management module circuit. It is by transmitting Figure 4 the digital audio signal sent by the main control chip U4 shown to chip U6. Chip U6 is the PCM5100APW digital-to-analog conversion chip produced by TI, and a stereo digital-to-analog converter is integrated inside. Pin 1 of chip U6 is the 3.3V power input, C55 and C56 are power filter capacitors, pin 6 is the audio output pin, and after being connected in series with resistor R48, it is connected to pin 1 of speaker BZ2. C58 is a filter capacitor, and pin 7 is grounded after being connected in series with resistor R47 and capacitor C57. Pin 8 is the 3.3V power input pin, pin 10 is grounded after being connected in series with R46, and C51 and C52 are power filter capacitors. Pin 11 FLT and Figure 4is connected to the 46th pin of the main control chip U4. The 13th pin I2S_BCK, the 14th pin I2S_DIN, the 15th pin I2S_LRCK, and the 17th pin XMST are respectively connected to Figure 4 the 22nd, 20th, 23rd, and 31st pins of the main control chip U4. R40, R41, R42, R43, R44, and R45 are pull-down resistors for the I / O ports. The 18th pin is the LDO pin inside the U6 chip, and the capacitor C49 and the capacitor C50 are connected in parallel between it and the 19th pin. The 20th pin is the power supply pin DVDD connected to 3.3V, and the power supply filter capacitor C45 and the power supply filter capacitor C48 are connected in parallel between it and the 18th pin.

[0045] As Figure 8 shown, for the memory management module circuit, the chip U7 uses the W25Q32JVZPIM 32M-BIT serial flash memory manufactured by winbond. The voice segments of the system are stored in this Flash memory. The 1st, 2nd, 5th, and 6th pins of the chip U7 are respectively connected to Figure 4 the 8th, 6th, 5th, and 7th pins of the main control chip U4 shown, and data is transmitted and controlled through these four pins. R55, R56, R57, R58, and R59 are pull-up resistors, R60 is the pull-down resistor for the 6th pin, the 4th pin is grounded with EP, the 8th pin is the power supply VCC connected to 3.3V, and C59 is the power supply filter capacitor.

[0046] The present utility model is not limited to the above embodiments. Based on the technical solutions disclosed in the present utility model, those skilled in the art can make some substitutions and deformations to some of the technical features without creative labor according to the disclosed technical content, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. An intelligent alarm device system, characterized in that, Main control chip module, microphone driver module, buzzer driver module, audio management module, memory management module, power management module, lithium battery charging management module, and RF antenna; The main control chip module is used to control the peripheral module circuits and perform data transmission. An RF communication module is integrated inside the main control chip module to realize the functions of wireless signal transceiver; The microphone driver module is used to collect sound signals, denoise the sound signals, amplify them, and then transmit the useful analog sound signals to the main control chip module; The audio management module is used to receive the digital sound signals sent by the main control chip module and convert the digital sound signals into analog signals required by the buzzer; The buzzer driver module is used to start the buzzer to emit corresponding sounds according to the functions set by the system; The memory management module is used to save various sound data emitted by the buzzer on the memory chip and call relevant sound data according to the system settings; The power management module is used to convert the input alternating current into the direct current voltage required by the system; The lithium battery charging management module is used to switch to battery power supply when the alternating current is cut off and supply power to the system through the lithium battery.

2. The intelligent alarm device system according to claim 1, wherein It also includes a key and indicator module. The key and indicator module is used for indicating the working state of the system. The colors displayed by two indicators, one red and one green respectively, are used to judge whether the system is working normally or in a fault state; The key and indicator module is electrically connected to the main control chip module.

3. The intelligent alarm device system according to claim 1, wherein, The main control chip module is electrically connected to the microphone driver module, buzzer driver module, audio management module, memory management module, power management module, lithium battery charging management module, and RF antenna; The power management module is electrically connected to the lithium battery charging management module.

4. An intelligent alarm device system according to claim 1, characterized in that, The main control chip module uses an EFR32MG13P732F512GM48-DR microcontroller.

5. An intelligent alarm device system according to claim 1, characterized in that, The microphone driver module includes a microphone and a TPA2010D1YZF audio power amplifier chip.

6. An intelligent alarm device system according to claim 1, characterized in that, The audio management module uses a PCM5100APW digital-to-analog conversion chip.

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