Near-field wireless anti-theft alarm device

Abstract

The utility model relates to the technical field of anti-theft alarm, in particular to a near-field wireless anti-theft alarm device. The utility model discloses a near-field wireless anti-theft alarm device, which comprises a user side and a vehicle-mounted side which are in signal connection, the user side and the vehicle-mounted side are both based on the same physical topological structure, and the near-field wireless anti-theft alarm device comprises a main chip, and a power supply module, a power supply voltage detection module, a communication module, an LED display module and a posture detection module which are integrated with the main chip. The device collects vehicle motion information through the posture detection module, generates a vehicle-mounted end data packet after comparison, transmits the data packet to the user end through the communication module, and reminds the user end and the vehicle-mounted end in real time through acousto-optic early warning, so that a more economical anti-theft early warning solution for the battery car and the bicycle is provided for a user, and the user experience is improved. And the anti-theft cost is greatly saved.

Description

Technical Field

[0001] This utility model relates to the field of burglar alarm technology, specifically to a near-field wireless burglar alarm device. Background Technology

[0002] Theft of electric bicycles and other bicycles still occurs frequently. Currently, the anti-theft alarms on the market fall into two categories: one is the inexpensive type that alerts the user upon detecting movement, but arming and disarming require manual operation and lack effective deterrent capability; the other is the expensive type using GSM or GPRS communication, which, while powerful, requires users to pay for both the expensive hardware and a mobile data SIM card, making it too costly to use, and also has a short battery life. Real-life experience shows that people generally don't stray too far from their electric bicycles, usually within 3-5 kilometers, meaning theft typically takes a considerable amount of time to succeed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to propose a near-field wireless anti-theft alarm device to reduce the anti-theft cost of electric vehicles and bicycles and improve the anti-theft efficiency.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is:

[0005] A near-field wireless anti-theft alarm device includes a user terminal and a vehicle terminal connected by a signal, characterized in that the user terminal and the vehicle terminal are based on the same physical topology.

[0006] The vehicle-mounted terminal includes: a first main chip, and a first power module, a first power voltage detection module, a first communication module, a first LED display module, and a first attitude detection module integrated with the first main chip;

[0007] The user terminal includes: a second main chip, and a second power module, a second power voltage detection module, a second communication module, a second LED display module, and a second attitude detection module integrated with the second main chip;

[0008] The first power module and the second power module are used to supply power to each module in the vehicle terminal and the user terminal, respectively.

[0009] The first power supply voltage detection module and the second power supply voltage detection module are used to detect the voltage values ​​of the first power supply module and the second power supply module, respectively.

[0010] The first LED display module and the second LED display module are used to display vehicle-mounted power information, user-mounted power information and alarm information;

[0011] The first attitude detection module is used to sense the vehicle's motion attitude information in real time and feed it back to the first main chip;

[0012] The first main chip is used to compare the vehicle's motion posture information and issue a warning message;

[0013] The second attitude detection module is used to sense the user's motion attitude information in real time and feed it back to the second main chip;

[0014] The second main chip is used to compare the user's motion posture information and issue a warning message;

[0015] The first communication module is signal-connected to the second communication module.

[0016] Furthermore, the vehicle-mounted terminal also includes a first buzzer module, which is integrated with the first main chip and is used to issue an alarm when the vehicle-mounted terminal experiences abnormal vibration or insufficient power.

[0017] Furthermore, the user terminal also includes a second buzzer module, which is integrated with the second main chip and is used to issue an alarm when the user terminal receives a warning message from the vehicle terminal or when the user terminal's battery is low.

[0018] Furthermore, the power module includes a 3V lithium battery power supply and a voltage regulator circuit composed of PW5100 and XC6206 voltage regulator chips. The PW5100 voltage regulator circuit regulates the power supply voltage to 5V, and the XC6206 voltage regulator circuit regulates the 5V voltage to 3.3V.

[0019] Furthermore, the first main chip and the second main chip are STM32L151C8T6 chips.

[0020] Furthermore, the first attitude detection module and the second attitude detection module are six-axis motion sensors MPU6050, and the six-axis motion sensors MPU6050 and the STM32L151C8T6 chip use the ICC communication protocol for data transmission.

[0021] Furthermore, the first LED display module and the second LED display module are LED light groups, which include red LED light groups, blue LED light groups, yellow LED light groups and white LED light groups.

[0022] Furthermore, the first and second communication modules are LoRa communication chips, and the communication range of the LoRa communication chip is 0-5km.

[0023] The beneficial effects of this utility model are:

[0024] The aforementioned near-field wireless anti-theft alarm device provides users with a more economical anti-theft warning solution for electric bicycles and bicycles, greatly saving anti-theft costs. At the same time, combined with actual usage habits, it achieves the corresponding functions of current high-end alarms based on GSM or GPRS at a low cost and without the need for inserting a card. It also realizes fully autonomous arming and disarming, and the seamless operation improves anti-theft efficiency. Attached Figure Description

[0025] Figure 1 This is a structural block diagram of an embodiment of a near-field wireless anti-theft alarm device according to the present invention.

[0026] Figure 2 This is a schematic diagram of the main chip circuit structure of an embodiment of the near-field wireless anti-theft alarm device of this utility model.

[0027] Figure 3 This is a schematic diagram of the attitude detection module circuit structure of an embodiment of the near-field wireless anti-theft alarm device of this utility model.

[0028] Figure 4 This is a schematic diagram of the communication module circuit structure of an embodiment of the near-field wireless anti-theft alarm device of this utility model.

[0029] Figure 5 This is a schematic diagram of the LED display module circuit structure of an embodiment of the near-field wireless anti-theft alarm device of this utility model.

[0030] Figure 6 This is a schematic diagram of the buzzer module circuit structure of an embodiment of a near-field wireless anti-theft alarm device of this utility model.

[0031] Figure 7 This is a schematic diagram of the power supply voltage detection module circuit structure of an embodiment of the near-field wireless anti-theft alarm device of this utility model.

[0032] Figure 8 This is a schematic diagram of the power module circuit structure of an embodiment of the near-field wireless anti-theft alarm device of this utility model. Detailed Implementation

[0033] This utility model aims to propose a near-field wireless anti-theft alarm device, which achieves the corresponding functions of current high-end alarms based on GSM or GPRS at a low cost and without the need for inserting a card. It also realizes fully autonomous arming and disarming, and improves anti-theft efficiency through seamless operation.

[0034] Example 1

[0035] like Figure 1As shown, the near-field wireless anti-theft alarm device of this utility model includes a user terminal and a vehicle terminal connected by a signal, and the user terminal and the vehicle terminal are based on the same physical topology.

[0036] The vehicle-mounted terminal includes: a first main chip, and a first power module, a first power voltage detection module, a first communication module, a first LED display module, a first attitude detection module, and a first buzzer module integrated with the first main chip;

[0037] The user terminal includes: a second main chip, and a second power module, a second power voltage detection module, a second communication module, a second LED display module, a second attitude detection module, and a second buzzer module integrated with the second main chip.

[0038] The specific implementation of each circuit unit is as follows:

[0039] 1. Main control microcontroller circuit

[0040] Both the first and second main chips utilize the STMicroelectronics STM32L151C8T6 ultra-low-power device, featuring an enhanced STM8 CPU core, efficient data processing capabilities, and fast execution speed. This microcontroller employs low-power technology and boasts excellent energy management, extending battery life and device runtime. It is primarily used in smart electronic products such as smartphones, tablets, wearable devices, and smartwatches. The STM8L151C8T6 supports multiple low-power modes, such as stop mode, standby mode, and sleep mode, allowing users to select the appropriate mode to reduce power consumption based on specific needs.

[0041] The circuit utilizes pins PB13 and PB12 of the STM32L151C8T6 to connect to pins 22 (SCL) and 23 (SDA) of the six-axis motion sensor MPU6050; pins PA6 and PA7 are connected to pins 2 (MISO) and 3 (MOSI) of the LoRa communication chip SX1278; PA0 is connected to pin 4 (SCL); and other peripheral control circuits, such as... Figure 2 As shown.

[0042] 2. Attitude detection circuit

[0043] Both the first and second attitude detection modules use a six-axis motion sensor, the MPU6050, to detect the tilt, vibration, attitude, and trajectory of the electric bicycle when it experiences abnormal vibration or movement in the armed state. When abnormal vibration or movement occurs in the armed state, the module sends information to the main control microcontroller, such as... Figure 3 As shown, the main control microcontroller STM32L151C8T6 and the six-axis motion sensor MPU6050 communicate via IIC.

[0044] 3. Communication circuit

[0045] Both the first and second communication modules use the LoRa communication chip SX1278. The SX1278 is a powerful LoRa RF transceiver chip with features such as long-distance transmission, low power consumption, and strong anti-interference capabilities, enabling bidirectional data transmission. It connects to the STM32L151C8T6 microcontroller via SPI pins (such as SCK, MISO, MOSI) and chip select pins (NSS / CS). Figure 4 As shown, Semtech's SX1278 chip is the core of LoRa wireless communication, supporting multiple frequency bands (such as 868MHz, 915MHz, etc.) and providing long-distance transmission and low power consumption capabilities. The chip integrates a LoRa modem, forward error correction coding, and spread spectrum technology, enabling highly reliable communication.

[0046] This alarm design utilizes the SX1278 chip to create a LoRa module. LoRa devices can transmit large amounts of data in a short time and then enter a sleep state with longer intervals, thus achieving low-power communication. This is crucial for battery-powered IoT devices, as it can extend battery life.

[0047] 4. LED display circuit

[0048] Both the first LED display module and the second LED display module use four-color LED light groups, including red, blue, and white lights. The red light flashes to remind the user to replace the vehicle battery based on the battery information sent from the vehicle terminal in the data packet. A low battery alarm on the user terminal uses a flashing blue light. Both the buzzer alarm caused by theft and the light alarm caused by low battery can only be turned off by rotating the user terminal 180 degrees. Figure 5 As shown. PA1 flashes red to remind the user to replace the vehicle battery; PA2 flashes blue to remind the user to replace the battery; PA3 flashes yellow to indicate the battery level; PA4 flashes an alarm light.

[0049] 5. Buzzer alarm circuit

[0050] When the six-axis motion sensor MPU6050 detects abnormal vibration or movement of an electric bicycle in the armed state, the STM32L151C8T6 microcontroller outputs a high level on pin PA5, turning on transistor Q1 and triggering an alarm. The circuit structures of the first and second buzzer modules are as follows: Figure 6 As shown.

[0051] 6. Power supply voltage detection circuit

[0052] The power supply voltage is connected to pin PB2 of the STM32L151C8T6 microcontroller. When the power supply voltage is low, it is controlled by... Figure 5 The flashing three-color LED light reminds the user that the power supply voltage is low and the battery needs to be replaced. The circuit structure of the first power supply voltage detection module and the second power supply voltage detection module is as follows: Figure 7 As shown.

[0053] 7. Power supply circuit

[0054] Both the first and second power modules are powered by 3V lithium batteries, which are lightweight, compact, and readily available. To obtain a system operating voltage of 3.3V, a PW5100 PFM (Pulse Frequency Modulation) synchronous boost DC / DC converter is used to convert it to 5V, which is then regulated by an XC6206 (High PSRR, High Current Linear Regulator) chip to achieve a stable 3.3V output. Figure 8 As shown.

[0055] Example 2

[0056] According to the near-field wireless burglar alarm device described in Embodiment 1, Embodiment 2 also provides a workflow for using a near-field wireless burglar alarm device.

[0057] 1. Hardware Selection:

[0058] The device utilizes a low-power STM32L151C8T6 processor and a six-axis motion sensor MPU6050, and is implemented using the LoRa communication chip SX1278, which features long-range and low-power communication. The device consists of a user end and an in-vehicle end, which share the same hardware circuitry but differ only in their software layers.

[0059] 2. Installation location:

[0060] The vehicle-mounted terminal is fixedly installed on the vehicle. Due to its small size, it can be placed in a relatively concealed place such as under the seat and fixed to the bottom of the seat. The user terminal can be carried by the user, such as by directly attaching it to a keychain.

[0061] 3. Workflow:

[0062] When the vehicle remains stationary for more than 10 seconds, that is, when there is no abnormal attitude sensing data input from the first attitude detection module in the vehicle terminal within 10 seconds, the vehicle terminal automatically enters the armed state. When abnormal vibration or movement occurs in the armed state, that is, when abnormal attitude sensing data is generated, the vehicle terminal sends a wireless data packet containing its own status information such as battery level to the user. After receiving the information, the user terminal immediately sends a data packet back to the vehicle terminal, and at the same time determines whether to sound an alarm based on the RSSI value of the received data packet.

[0063] Specifically, the system determines whether to flash a red light to remind the user to replace the vehicle battery based on the battery information sent from the vehicle terminal in the data packet, while a flashing blue light is used to remind the user of a low battery alarm. Both the buzzer alarm caused by theft and the light alarm caused by low battery reminders can only be turned off by rotating the user terminal 180 degrees. That is, the buzzer alarm caused by theft and the light alarm caused by low battery reminders will only be turned off when the second attitude detection module in the user terminal receives attitude sensing data with an angle rotation greater than 180 degrees.

[0064] When the vehicle-mounted unit receives a data packet, it determines whether to trigger an alarm or disarm the system based on the RSSI value of the wireless signal. If no feedback is received within 10 seconds, an alarm will also be triggered. The alarm actions mainly involve a buzzer and flashing lights to deter theft. Users can also respond to the alarm and arrive at the scene.

[0065] Tests showed that the alarm could reliably communicate at a distance of 0 to 5 kilometers in urban street environments, enabling near-field monitoring of electric bicycles and scooters.

Claims

1. A near field wireless anti-theft alarm device, comprising a user terminal and a vehicle terminal connected by a signal, characterized in that, The user terminal and the vehicle terminal are based on the same physical topology structure; The vehicle terminal comprises a first main chip, and a first power module, a first power voltage detection module, a first communication module, a first LED display module and a first attitude detection module which are integrally arranged with the first main chip; The user terminal comprises a second main chip, and a second power module, a second power voltage detection module, a second communication module, a second LED display module and a second attitude detection module which are integrally arranged with the second main chip; The first power module and the second power module are used for supplying power to each module in the vehicle terminal and the user terminal respectively; The first power voltage detection module and the second power voltage detection module are used for detecting the voltage values of the first power module and the second power module respectively; The first LED display module and the second LED display module are used for displaying the power information of the vehicle terminal, the power information of the user terminal and the alarm information; The first attitude detection module is used for sensing the motion attitude information of the vehicle terminal in real time and feeding back to the first main chip; The first main chip is used for comparing the motion attitude information of the vehicle terminal and sending a pre-warning information; The second attitude detection module is used for sensing the motion attitude information of the user terminal in real time and feeding back to the second main chip; The second main chip is used for comparing the motion attitude information of the user terminal and sending a pre-warning information; The first communication module and the second communication module are signal connected.

2. A near field wireless anti-theft alarm device according to claim 1, characterized in that, The vehicle terminal further comprises a first buzzer module which is integrally arranged with the first main chip and is used for alarming when abnormal vibration of the vehicle terminal or insufficient power of the vehicle terminal occurs.

3. The near field wireless burglar alarm device according to claim 1, wherein The user terminal further comprises a second buzzer module which is integrally arranged with the second main chip and is used for alarming when the user terminal receives the pre-warning information sent by the vehicle terminal or the power of the user terminal is insufficient.

4. The near field wireless burglar alarm device according to claim 1, wherein The power module comprises a 3V lithium battery power supply and a voltage stabilizing circuit composed of PW5100 and XC6206 voltage stabilizing chips, the PW5100 voltage stabilizing circuit stabilizes the power voltage to 5V, and the XC6206 voltage stabilizing circuit stabilizes the 5V voltage to 3.3V.

5. The near field wireless burglar alarm device according to claim 1, wherein The first main chip and the second main chip are STM32L151C8T6 chips.

6. The near field wireless burglar alarm device according to claim 1, wherein The first attitude detection module and the second attitude detection module are six-axis motion sensors MPU6050, the first attitude detection module transmits data to the first main chip through an ICC communication protocol, and the second attitude detection module transmits data to the second main chip through an ICC communication protocol.

7. The near field wireless burglar alarm device according to claim 1, wherein The first communication module and the second communication module are LoRa communication chips, and the communication range of the LoRa communication chip is 0-5km.

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