Multi-module cooperative ultrasonic alarm system

Abstract

The utility model discloses a kind of multi-module collaborative ultrasonic alarm system, belong to security monitoring technical field.The system with sky star STM32F407VET6 chip as main control unit, four groups of HC-SR04 ultrasonic ranging module, SYN6288 speech synthesis module, power module, alarm indication module and storage module are connected outside.Four groups of ultrasonic module are separately arranged in monitoring area east, south, west, north four directions, realize 360 ° dead angle ranging;STM32F407VET6 is triggered ranging by timer, capture echo signal calculation distance, after data filtering and threshold comparison, alarm information is sorted according to dangerous priority, then alarm is realized by generating dynamic voice containing "azimuth+distance" by SYN6288 module through UART communication control.The present application solves the problem that traditional system monitoring blind area is large, alarm is not intuitive, response is slow, adapts to industry, home, storage and other multiple scenes, and has wide application value.

Description

Technical Field

[0001] This utility model relates to the field of monitoring technology, specifically to a multi-module collaborative ultrasonic alarm system. Background Technology

[0002] Security alarm systems are mainly used in various scenarios such as industrial equipment protection, smart home intrusion detection, and warehouse boundary early warning. They achieve alarm activation by setting security boundaries. Current security alarm systems have the following problems:

[0003] 1. Incomplete security alarm detection with significant blind spots leads to vulnerabilities in the security system;

[0004] 2. Currently, security alarms typically use video feeds or SMS pop-ups, which are not very intuitive.

[0005] 3. Current security alarm systems have complex structures and high overall costs, resulting in high deployment costs and hindering their widespread adoption. Utility Model Content

[0006] In view of the above-mentioned defects of the existing technology, the purpose of this utility model is to provide a multi-module collaborative ultrasonic alarm system, which solves the problems of large monitoring blind spots, unintuitive alarms, and slow response of traditional systems. It is suitable for multiple scenarios such as industry, home, and warehousing, and has wide application value.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] The multi-module collaborative ultrasonic alarm system includes four ultrasonic ranging modules, a main control module, a voice alarm module, a storage module, and a power supply module;

[0009] The four ultrasonic ranging modules are set in four directions to detect the distance to objects within a 360° range of their placement area;

[0010] The main control module interacts with the ultrasonic ranging module, the voice alarm module, and the storage module to control the operation of the ultrasonic ranging module and the voice alarm module, receive information from the ultrasonic ranging module, and process the received information.

[0011] The language alarm module broadcasts the information received from the main control module;

[0012] The storage module stores programs and temporary data;

[0013] The power module converts the voltage and supplies power to the ultrasonic ranging module, main control module, voice alarm module, and storage module.

[0014] Furthermore, the main control module controls the four ultrasonic ranging modules to simultaneously emit ultrasonic waves and acquire distance data in the corresponding directions of the four ultrasonic ranging modules;

[0015] The main control module includes an FPU unit, which filters and processes the information received from the ultrasonic ranging module to obtain the distance information in the ultrasonic ranging module data.

[0016] The main control module compares the calculated distance information with the threshold, sorts the distance information according to the preset danger level, and sends the alarm information to the voice alarm module through UART communication.

[0017] Furthermore, the main control module is an STM32F407VET6 microcontroller; the NRST pin of the microcontroller is connected to 3.3V via a 10K pull-up resistor and a 0.1μF capacitor;

[0018] The microcontroller is externally connected to a crystal oscillator circuit consisting of an 8MHz external crystal oscillator and a 20pF load capacitor in parallel.

[0019] Furthermore, the microcontroller is electrically connected to the Tri port of the four ultrasonic ranging modules through its PE14, PA7, PC1, and PB7 pins, and outputs trigger pulses of more than 10μs to the four ultrasonic ranging modules to control the four ultrasonic ranging modules to emit ranging ultrasonic waves.

[0020] The microcontroller is electrically connected to the Echo ports of the four ultrasonic ranging modules through its PE15, PC4, PC2, and PB8 pins. It receives the high-level capture time of the four ultrasonic ranging modules and calculates the distance detected by the four ultrasonic ranging modules.

[0021] The microcontroller is electrically connected to the RXD terminal of the voice alarm module via its PA2 pin, and sends voice alarm text commands to the voice alarm module.

[0022] The microcontroller is electrically connected to the TXD terminal of the voice alarm module via its PA3 pin, and receives the initialization feedback from the voice alarm module.

[0023] Furthermore, the four ultrasonic ranging modules are arranged in a "cross" shape, with each group of ultrasonic ranging modules monitoring a 120° sector area; the power supply terminal of the ultrasonic ranging module is connected in series with a ferrite bead, and the transmission line for transmitting signals to the main control unit is a shielded cable.

[0024] Furthermore, the language alarm module includes a speech synthesis module and a speaker; the speech synthesis module interacts with the main control unit via UART communication and is electrically connected to the power supply module; the speaker interacts with the speech synthesis module.

[0025] Furthermore, the power module includes a 12V to 3.3V circuit, a 12V to 5V circuit, and a power indicator circuit;

[0026] The 12V to 3.3V circuit includes a DCE001 - 3.3V linear regulator chip, which supplies power to the active module;

[0027] The 12V to 5V circuit includes a DCE001 voltage regulator chip, which supplies power to four ultrasonic ranging modules.

[0028] The power indicator circuit includes an LED bead and a current-limiting resistor; the LED bead and the current-limiting resistor are connected in series at the output terminal of the 12V to 3.3V circuit.

[0029] Furthermore, the storage module is either external or built into the main control module.

[0030] Furthermore, it also includes a button module, which sends level change signals to the main control module and interacts with the main control module; the button module controls the maximum distance of the ultrasonic module's ranging alarm, the selection cycle of the ultrasonic ranging module, and the opening and closing of the ultrasonic ranging module.

[0031] Furthermore, it also includes a visual interaction module that interacts with the main control module to display the distance detected by each ultrasonic ranging module, the on / off status of each ultrasonic ranging module, and the maximum distance at which the ultrasonic module can trigger an alarm.

[0032] Due to the adoption of the above technical solution, this utility model has the following advantages:

[0033] 1. No blind spots in detection range: The four ultrasonic ranging modules are arranged in a cross shape, covering a 360° monitoring area with a blind zone area of ​​≤ 0.5㎡ (within a 10㎡ monitoring space). Compared with a single module system, the monitoring range is increased by 300%, making it suitable for large-area and multi-corner scenarios.

[0034] 2. High precision and fast response: The high-performance computing power of the STM32F407VET6 main control module, combined with the moving average filtering algorithm, achieves a ranging accuracy of ±2cm and an alarm delay of ≤50ms, which is 80% faster than the response speed of traditional 51 microcontroller main control systems;

[0035] 3. High stability and adaptability: The power module is equipped with reverse connection protection and overcurrent protection. The system can work stably in environments from 10℃ to 50℃. The safety threshold can be adjusted via buttons (0.1 - 5m). It is compatible with multiple scenarios such as industrial equipment protection, smart home intrusion detection, and warehouse boundary early warning. No hardware replacement is required, reducing user costs.

[0036] 4. Low cost and easy to implement: The core components (STM32F407VET6 main control module, HC-SR04 ultrasonic ranging module, and SYN6288 voice alarm module) are all mass-produced low-cost components with simple PCB layout and mature manufacturing process, which facilitates mass production and application.

[0037] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0038] The accompanying drawings of this utility model are described below:

[0039] Figure 1 This is a circuit diagram of the multi-module collaborative ultrasonic alarm system in the embodiment;

[0040] Figure 2 This is a pin circuit diagram of the main control module in the embodiment;

[0041] Figure 3 The circuit diagram shows the four ultrasonic ranging modules in the embodiment.

[0042] Figure 4 This is a circuit diagram of the language alarm module in the embodiment;

[0043] Figure 5 This is a circuit diagram of the power input in the embodiment;

[0044] Figure 6 This is a circuit diagram of the 12V to 3.3V conversion circuit in the embodiment;

[0045] Figure 7 The circuit diagram for the 12V to 5V conversion circuit in the embodiment is shown below.

[0046] Figure 8 This is a circuit diagram of the power indicator circuit in the embodiment;

[0047] Figure 9 This is a circuit diagram of the button module circuit in the embodiment;

[0048] Figure 10 This is a circuit diagram of the visualization interaction module in the embodiment. Detailed Implementation

[0049] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0050] Example:

[0051] like Figures 1 to 10As shown, the multi-module collaborative ultrasonic alarm system includes four ultrasonic ranging modules, a main control module, a voice alarm module, a storage module, and a power supply module.

[0052] The four ultrasonic ranging modules are set in four directions to detect the distance to objects within a 360° range of their placement area;

[0053] The main control module interacts with the ultrasonic ranging module, the voice alarm module, and the storage module, controls the operation of the ultrasonic ranging module and the voice alarm module, receives information from the ultrasonic ranging module, and processes the received information; it is mainly responsible for sending system instructions, data calculation, and coordinating with various modules.

[0054] The language alarm module broadcasts the information received from the main control module;

[0055] The storage module stores programs and temporary data;

[0056] The power module converts the voltage and supplies power to the ultrasonic ranging module, main control module, voice alarm module, and storage module.

[0057] The system's core workflow achieves complete alarm functionality in four steps, with clear data flow and efficient response: Specifically:

[0058] The first step is synchronous data acquisition: the STM32F407VET6 main control module triggers four sets of ultrasonic ranging modules at regular intervals to measure distances and acquire distance data from four directions simultaneously.

[0059] The second step is data processing: the main control module completes filtering and distance calculation through the FPU, with an accuracy of ±2cm;

[0060] The third step is alarm judgment: compare the calculated distance data with the threshold, and sort the alarm information according to the degree of danger.

[0061] The fourth step is to issue alarm information: The alarm information, sorted by the degree of danger, is sent to the voice alarm module to issue a voice alarm.

[0062] In this embodiment, the main control module controls four ultrasonic ranging modules to simultaneously emit ultrasonic waves and acquire distance data in the corresponding directions of the four ultrasonic ranging modules.

[0063] The main control module includes an FPU unit, which filters and processes the information received from the ultrasonic ranging module to obtain the distance information in the ultrasonic ranging module data.

[0064] The main control module compares the calculated distance information with the threshold, sorts the distance information according to the preset danger level, and then sends the alarm information to the voice alarm module through UART communication.

[0065] In this embodiment, the main control module is an STM32F407VET6 microcontroller; the NRST pin of the microcontroller is connected to 3.3V via a 10K pull-up resistor and a 0.1μF capacitor to ensure stable reset upon power-up;

[0066] The microcontroller is externally connected to a crystal oscillator circuit consisting of an 8MHz external crystal oscillator and a 20pF load capacitor in parallel, ensuring processing speed.

[0067] In this embodiment, the microcontroller is electrically connected to the Tri port of the four ultrasonic ranging modules through its PE14, PA7, PC1, and PB7 pins, and outputs trigger pulses of more than 10μs to the four ultrasonic ranging modules to control the four ultrasonic ranging modules to emit ranging ultrasonic waves.

[0068] The microcontroller is electrically connected to the Echo ports of the four ultrasonic ranging modules through its PE15, PC4, PC2, and PB8 pins. It receives the high-level capture time of the four ultrasonic ranging modules and calculates the distance detected by the four ultrasonic ranging modules.

[0069] The microcontroller is electrically connected to the RXD terminal of the voice alarm module via its PA2 pin, and sends voice alarm text commands to the voice alarm module.

[0070] The microcontroller is electrically connected to the TXD terminal of the voice alarm module via its PA3 pin, and receives the initialization feedback from the voice alarm module.

[0071] In this embodiment, the four ultrasonic ranging modules are arranged in a "cross" shape, with each group of ultrasonic ranging modules monitoring a 120° sector area; together they eliminate the blind spots of a single module's monitoring, ensuring monitoring without blind spots.

[0072] The VCC terminal of the ultrasonic ranging module is connected to a 5V power supply; the Trig and Echo terminals are connected to an STM32F407VET6; the module's GND terminal shares a common ground with the main control and power supply modules to eliminate signal interference caused by potential differences.

[0073] The four modules are arranged in a specific orientation on the PCB, consistent with the actual application scenario. Specifically:

[0074] Ultrasonic ranging module 1 (eastward): installed on the east side of the PCB, Trig - PE14, Echo - PE15;

[0075] Ultrasonic ranging module 2 (south-facing): installed on the south side of the PCB, Trig - PA7, Echo - PC7;

[0076] Ultrasonic ranging module 3 (west side): installed on the west side of the PCB, Trig - PC1, Echo - PC2;

[0077] Ultrasonic ranging module 4 (north-facing): Installed on the north side of the PCB, Trig - PB7, Echo - PB8.

[0078] The power supply terminal of the ultrasonic ranging module is connected in series with a ferrite bead, and the transmission line for transmitting signals to the main control unit is a shielded cable.

[0079] When calibrating the ultrasonic ranging module for accuracy: within the range of 0.1-5m, set 10 calibration points using a standard distance ruler, record the measurement values ​​of each module, compensate for fixed errors in the program, and ensure that the ranging error is ≤ ±2cm.

[0080] In this embodiment, the "sound unit" of the language alarm module system translates the text commands sent by the main controller into Chinese speech and plays them through a speaker, thus solving the problem of traditional buzzers that "only warn without providing details." Specifically, it includes a speech synthesis module and a speaker.

[0081] The speech synthesis module uses SYN6288, with VCC connected to a 5V power supply; SYN6288 TXD is connected to STM32F407VET6PA10 (USART2_RX), and RXD is connected to PA9 (USART2_TX) to achieve bidirectional UART communication; when outputting audio, the module's AOUT terminal is connected to an 8Ω 1W speaker to avoid audio signal overload damaging the speaker.

[0082] The SYN6288 supports GB2312 encoding, has a speech synthesis response time of ≤ 100ms, and its volume can be adjusted via button module (0-15 levels).

[0083] The speaker is an 8Ω 1W dynamic speaker with a frequency response range of 200Hz - 10kHz, suitable for noisy industrial environments and quiet home environments.

[0084] In this embodiment, the power module is the system's "energy hub," converting the external 12V DC input into stable 3.3V and 5V voltages to provide matching power to each module, preventing functional abnormalities caused by voltage fluctuations. It also has reverse connection protection and overcurrent protection functions, improving the system's power supply safety.

[0085] Specifically, it includes a 12V to 3.3V circuit, a 12V to 5V circuit, and a power indicator circuit;

[0086] The 12V to 3.3V circuit uses the DCE001 - 3.3V linear regulator chip, with an output voltage accuracy of ±1% and a maximum output current of 800mA, which meets the power supply requirements of the STM32F407VET6 (typical power consumption 300mA).

[0087] The 12V to 5V circuit uses a DCE001 voltage regulator chip with an output voltage accuracy of ±2% and a maximum output current of 3A. It can simultaneously power four HC-SR04 modules (each with a typical power consumption of 100mA) and a SYN6288 module (with a typical power consumption of 150mA), with sufficient current redundancy reserved.

[0088] The power indicator has an LED + 1kΩ current-limiting resistor circuit connected in series at the 3.3V output terminal (the positive terminal of the LED is connected to the output terminal, and the negative terminal is grounded). When the power supply is working normally, the LED is always on, making it easy to intuitively judge the power supply status.

[0089] The power supply modules are configured according to their power consumption and voltage requirements, using an "independent circuit, centralized power supply" scheme, as detailed in Table 1 below:

[0090] Table 1 Power Module Allocation Table

[0091]

[0092] When routing the power module on the PCB, the 12V input line, 5V output line, and 3V output line all use 20mil wide copper foil (current carrying capacity ≥ 3A). The power ground and signal ground are connected through a single-point grounding connection to avoid ground loop interference; at the same time, heat dissipation is achieved through holes punched on the board.

[0093] In this embodiment, the storage module is either external or internal to the main control module. Specifically, the storage module is the 512KB Flash and 192KB SRAM (64KB for the core and 128KB for the user) built into the STM32F407VET6, which store the system program and temporary ranging data, respectively.

[0094] This embodiment also includes a button module, which is composed of multiple ZX-QC66-6.5TP tactile switches;

[0095] The ZX-QC66-6.5TP touch button is the core input interaction component of the system, undertaking three key functions:

[0096] 1. Alarm threshold adjustment: Button 1 increases the maximum distance for ultrasonic ranging module alarm, button 2 decreases the maximum distance for ultrasonic ranging module alarm, step size 0.1m, range 1m - 5m;

[0097] 2. Ultrasonic Module Selection: Press button 3 to cycle through the ultrasonic ranging modules to be operated (East → South → West → North sequence);

[0098] 3. Module switch control: Button 4 toggles the on or off state of the currently selected ultrasonic ranging module.

[0099] The button module is directly connected to the main control chip (such as STM32F407VET6) through its GPIO pins, serving as a "bridge" between user operation and system response. It can also achieve the following interactions:

[0100] 1. Interaction with the main control module: When the user presses a button, the button sends a level change signal to the main control module, and the main control module executes the corresponding program logic accordingly (such as threshold increase / decrease, module selection / on / off control).

[0101] 2. Control of the ultrasonic ranging module: The main control module adjusts the alarm threshold of the ultrasonic ranging module or controls whether the ultrasonic ranging module starts ranging according to the button command;

[0102] 3. Integration with the visual interaction module (OLED module or display, etc.): The main control module will transmit the results of button operations (such as updated alarm thresholds, module on / off status) to the visual interaction module (OLED module or display, etc.), allowing the visual interaction module (OLED module or display, etc.) to display these changes in real time, enabling users to intuitively grasp the system parameters and status.

[0103] This embodiment also includes a visualization interaction module (OLED), using an HS96L03W2C03 display screen, which serves as the system's visualization interaction window and is responsible for presenting three types of key information in real time:

[0104] 1. Ultrasonic ranging data: Displays the distance value currently measured by each ultrasonic ranging module;

[0105] 2. Module Status: Displays the on / off status of each ultrasonic measurement and control module;

[0106] 3. Alarm parameters: Displays the currently set maximum distance for ultrasonic ranging alarm.

[0107] Meanwhile, the visualization interaction module is connected to the main control chip (such as STM32F407VET6) via the I2C communication interface, serving as a "display terminal" for the system status and implementing the following functions:

[0108] 1. Interaction with the main control module: The main control module obtains ranging data from the ultrasonic ranging module, and integrates the operation results of the button module (such as updated thresholds and module on / off status), and sends display commands and data to the OLED via the I2C bus;

[0109] 2. Displaying ultrasonic ranging module information: After receiving the ranging data and status information of the ultrasonic ranging module sent by the main control module, the OLED displays it clearly on the screen, allowing users to intuitively understand the working status of each module;

[0110] 3. Feedback on button operation results: When the button module adjusts the alarm threshold or controls the switch of the control module, the OLED will update the displayed content synchronously, so that the user can see the operation effect in real time.

[0111] The multi-module collaborative ultrasonic alarm system in this embodiment works as follows.

[0112] Step 1: Perform system integration testing:

[0113] 1. Hardware integration and debugging: Connect each module according to the circuit diagram, check the power polarity and pin connection for correctness, and observe the power indicator and main control reset status after powering on to ensure that each module is powered normally;

[0114] 2. Software integration: Download the program to STM32F407VET6 via the ST-LINK interface, and use a serial port debugging assistant to check the initialization status of each module (such as ultrasonic trigger signal and voice module response command) to verify the software and hardware compatibility;

[0115] 3. Functional integration test: Set up obstacles at different distances (0.3m, 1m, 3m) in the monitoring area to test the ranging accuracy and voice alarm accuracy of the four ultrasonic modules (whether the direction and distance match) to ensure that the overall function is normal.

[0116] Step 2: Performance Testing Metrics

[0117] 1. Distance measurement performance

[0118] 1. Measurement range: 0.1 - 5m (meets the needs of industrial and residential scenarios);

[0119] 2. Distance measurement accuracy: error ≤ ±2cm (within the range of 0.3 - 3m, error ≤ ±1cm);

[0120] 3. Acquisition cycle: 70ms / time (four modules acquire data synchronously, with no delay).

[0121] 2. Alarm performance

[0122] 1. Response latency: The total latency from detecting the distance exceeding the threshold to voice playback and LED flashing is ≤ 50ms;

[0123] 2. Voice clarity: In an 80dB noisy environment (simulated industrial workshop), the location and distance of the alarm can be clearly identified within a 10m range;

[0124] 3. False alarm rate: Under unobstructed conditions and an ambient temperature range of 10℃ to 50℃, the false alarm rate is 0 after 72 hours of continuous operation.

[0125] 3. Stability performance

[0126] 1. Operating temperature: 10℃ to 50℃ (suitable for most indoor and outdoor scenarios);

[0127] 2. Continuous working time: ≥ 1000 hours (no crashes, no data loss);

[0128] 3. Anti-interference capability: Under the interference of 220V AC power grid and mobile phone signal (2G / 4G) interference, the ranging accuracy fluctuation is ≤ ±3cm, with no functional abnormalities.

[0129] The test results are shown in Table 2 below:

[0130] Table 2 Test Results

[0131]

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A multi-module collaborative ultrasonic alarm system, characterized in that, It includes four ultrasonic ranging modules, a main control module, a voice alarm module, a storage module, and a power supply module; The four ultrasonic ranging modules are set in four directions to detect the distance to objects within a 360° range of their placement area; The main control module interacts with the ultrasonic ranging module, the voice alarm module, and the storage module to control the operation of the ultrasonic ranging module and the voice alarm module, receive information from the ultrasonic ranging module, and process the received information. The language alarm module broadcasts the information received from the main control module; The storage module stores programs and temporary data; The power module converts the voltage and supplies power to the ultrasonic ranging module, main control module, voice alarm module, and storage module.

2. The multi-module collaborative ultrasonic alarm system according to claim 1, characterized in that, The main control module controls four ultrasonic ranging modules to simultaneously emit ultrasonic waves and acquire distance data in the corresponding directions of the four ultrasonic ranging modules. The main control module includes an FPU unit, which filters and processes the information received from the ultrasonic ranging module to obtain the distance information in the ultrasonic ranging module data. The main control module compares the calculated distance information with the threshold, sorts the distance information according to the preset danger level, and sends the alarm information to the voice alarm module through UART communication.

3. The multi-module collaborative ultrasonic alarm system according to claim 1, characterized in that, The main control module is an STM32F407VET6 microcontroller; the NRST pin of the microcontroller is connected to 3.3V via a 10K pull-up resistor and a 0.1μF capacitor; The microcontroller is externally connected to a crystal oscillator circuit consisting of an 8MHz external crystal oscillator and a 20pF load capacitor in parallel.

4. The multi-module collaborative ultrasonic alarm system according to claim 3, characterized in that, The microcontroller is electrically connected to the Tri port of the four ultrasonic ranging modules through its PE14, PA7, PC1, and PB7 pins, and outputs trigger pulses of more than 10μs to the four ultrasonic ranging modules to control the four ultrasonic ranging modules to emit ranging ultrasonic waves. The microcontroller is electrically connected to the Echo ports of the four ultrasonic ranging modules through its PE15, PC4, PC2, and PB8 pins. It receives the high-level capture time of the four ultrasonic ranging modules and calculates the distance detected by the four ultrasonic ranging modules. The microcontroller is electrically connected to the RXD terminal of the voice alarm module via its PA2 pin, and sends voice alarm text commands to the voice alarm module. The microcontroller is electrically connected to the TXD terminal of the voice alarm module via its PA3 pin, and receives the initialization feedback from the voice alarm module.

5. The multi-module collaborative ultrasonic alarm system according to claim 1, characterized in that, The four ultrasonic ranging modules are arranged in a cross shape, with each group of ultrasonic ranging modules monitoring a 120° sector area; the power supply terminal of the ultrasonic ranging module is connected in series with a ferrite bead, and the transmission line for transmitting signals to the main control unit is a shielded cable.

6. The multi-module collaborative ultrasonic alarm system according to claim 1, characterized in that, The language alarm module includes a speech synthesis module and a speaker; the speech synthesis module interacts with the main control unit via UART communication and is electrically connected to the power supply module; the speaker interacts with the speech synthesis module.

7. The multi-module collaborative ultrasonic alarm system according to claim 1, characterized in that, The power module includes a 12V to 3.3V circuit, a 12V to 5V circuit, and a power indicator circuit; The 12V to 3.3V circuit includes a DCE001 - 3.3V linear regulator chip, which supplies power to the active module; The 12V to 5V circuit includes a DCE001 voltage regulator chip, which supplies power to four ultrasonic ranging modules. The power indicator circuit includes an LED bead and a current-limiting resistor; the LED bead and the current-limiting resistor are connected in series at the output terminal of the 12V to 3.3V circuit.

8. The multi-module collaborative ultrasonic alarm system according to claim 1, characterized in that, The storage module can be external or built into the main control module.

9. The multi-module collaborative ultrasonic alarm system according to claim 1, characterized in that, It also includes a button module, which sends level change signals to the main control module and interacts with the main control module; the button module controls the maximum distance of the ultrasonic ranging alarm, the selection cycle of the ultrasonic ranging module, and the opening and closing of the ultrasonic ranging module.

10. The multi-module collaborative ultrasonic alarm system according to claim 1, characterized in that, It also includes a visual interaction module that interacts with the main control module to display the distance detected by each ultrasonic ranging module, the on / off status of each ultrasonic ranging module, and the maximum distance at which the ultrasonic module can trigger an alarm.

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