A vehicle-mounted emergency call switch module with a backup power supply

Abstract

The utility model discloses a vehicle-mounted emergency call switch module with standby power supply, including the shell, be provided with emergency call button and mains interface on the shell, the inside of shell is provided with main control unit, communication unit, positioning unit, voice interaction unit, standby power unit, power automatic switching unit and controlled power distribution unit, mains interface and the output of standby power unit all are connected with the input of power automatic switching unit, and the output of power automatic switching unit is connected with the power input of main control unit, and the working power pin of power automatic switching unit is connected to its own output, the power output of main control unit is connected with the input of controlled power distribution unit, and the output of controlled power distribution unit is connected with the power input of communication unit, positioning unit and voice interaction unit respectively. The utility model solves the problem that emergency call function can not be activated manually after the interruption of vehicle mains.

Description

Technical Field

[0001] This utility model relates to the field of automotive safety electronic equipment technology, specifically to a vehicle-mounted emergency call switch module with backup power supply. Background Technology

[0002] With the continuous development of automotive safety technology, in-vehicle emergency call systems (eCall) have become standard equipment in many models. When a serious accident (such as a collision) occurs, the system can be automatically or manually triggered by passengers to send the vehicle's location, accident information, and other details to the rescue center via a wireless network, thereby gaining valuable rescue time.

[0003] Current manual emergency call modules are typically powered directly by the vehicle's main power source (such as a 12V battery). However, in serious traffic accidents, the vehicle's electrical system is highly susceptible to damage, leading to a power outage and paralyzing the entire emergency call system, rendering the manual emergency call button ineffective. This leaves the vehicle unable to contact the outside world when it most needs help, posing a significant safety hazard. Therefore, there is an urgent need for an emergency call triggering device that can maintain basic functionality even in the event of a main power failure. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a vehicle-mounted emergency call switch module with backup power supply, so as to solve the problem that the emergency call function cannot be manually activated after the main power of the vehicle is interrupted, and to ensure the reliable transmission of distress signals in emergency situations.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0006] An on-board emergency call switch module with backup power supply includes a housing, wherein an emergency call button and a main power interface for connecting to the vehicle's electrical system are provided on the housing, and a main control unit, a communication unit, a positioning unit, a voice interaction unit, a backup power supply unit, an automatic power switching unit, and a controlled power distribution unit are provided inside the housing. The output terminals of the main power interface and the backup power unit are both connected to the input terminal of the automatic power switching unit. The output terminal of the automatic power switching unit is connected to the power input terminal of the main control unit, and the working power pin of the automatic power switching unit is connected to its own output terminal. The power output terminal of the main control unit is connected to the input terminal of the controlled power distribution unit, and the output terminal of the controlled power distribution unit is connected to the power input terminals of the communication unit, the positioning unit, and the voice interaction unit, respectively. The signal output terminal of the emergency call button is connected to the signal input terminal of the main control unit. The main control unit is also bidirectionally electrically connected to the communication unit, the positioning unit, and the voice interaction unit, and the power control terminal of the main control unit is connected to the controlled terminal of the controlled power distribution unit.

[0007] Preferably, the emergency call button is a recessed button in the housing to prevent accidental activation.

[0008] Preferably, the voice interaction unit includes a microphone and a speaker, and the housing has a speaker hole corresponding to the speaker and a microphone hole corresponding to the microphone.

[0009] Preferably, the output terminal of the main power interface is connected to a charging management unit disposed inside the housing, and the output terminal of the charging management unit is connected to the input terminal of the backup power unit.

[0010] Preferably, the controlled power distribution unit consists of multiple MOSFET switches or integrated load switch chips controlled by the I / O pins of the main control unit.

[0011] Preferably, the housing is provided with a mounting plate, and the mounting plate has mounting holes for installing the switch module inside the vehicle.

[0012] Preferably, the communication unit is a cellular mobile communication module or a satellite communication module, the positioning unit is a global satellite navigation system module, and the backup power unit is a rechargeable supercapacitor or a lithium-ion battery.

[0013] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0014] This utility model, through the setting of a backup power unit, an automatic power switching unit, and a controlled power distribution unit, not only enables the emergency call function to be manually activated after the vehicle's main power is interrupted, ensuring the reliable transmission of distress signals in emergency situations, but also realizes a hierarchical power supply architecture, resulting in extremely low standby power consumption, significantly improved battery life of the backup power unit, and significantly enhanced reliability.

[0015] This invention integrates positioning and voice functions through a positioning unit and a voice interaction unit, providing accurate location and on-site voice information. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a block diagram illustrating the power supply principle of this utility model; Figure 3 This is a block diagram illustrating the control principle of this utility model.

[0017] The components include: 1. Outer shell, 2. Emergency call button, 3. Speaker hole, 4. Microphone hole, 5. Main power interface, 6. Mounting plate, and 7. Mounting holes. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] A vehicle-mounted emergency call switch module with backup power supply, combined with Figure 1 As shown, the device includes a housing 1, on which an emergency call button 2 and a main power interface 5 are installed. The main power interface 5 is used to connect to the vehicle's electrical system to draw power. Inside the housing 1 are a main control unit, a communication unit, a positioning unit, a voice interaction unit, a backup power unit, an automatic power switching unit, and a controlled power distribution unit.

[0020] like Figure 2 As shown, the output of the main power interface 5 is connected to a charging management unit, which is located inside the housing 1. The output of the charging management unit is connected to the input of the backup power unit. The charging management unit is used to enable the backup power unit to be charged through the main power interface 5. Specifically, the backup power unit is a rechargeable supercapacitor or a lithium-ion battery.

[0021] Both the main power interface 5 and the output of the backup power unit are connected to the input of the automatic power switching unit. The automatic power switching unit is used to switch power to the backup power unit after a main power outage. Specifically, the automatic power switching unit is implemented using a dedicated chip, LTC4412. The output of the automatic power switching unit is connected to the power input of the main control unit, thus supplying power to the main control unit. Furthermore, the operating power pin of the automatic power switching unit is connected to its own output. This design ensures that the automatic power switching unit can operate reliably under any circumstances.

[0022] The main control unit adopts a high-performance, low-power microcontroller. The power output terminal of the main control unit is connected to the input terminal of the controlled power distribution unit. The output terminal of the controlled power distribution unit is connected to the power input terminals of the communication unit, the positioning unit, and the voice interaction unit, respectively, so that the main control unit can supply power to the communication unit, the positioning unit, and the voice interaction unit through the controlled power distribution unit.

[0023] like Figure 3As shown, the emergency call button 2 is a recessed anti-accidental touch button within the housing 1, thus preventing accidental activation. The signal output terminal of the emergency call button 2 is connected to the signal input terminal of the main control unit. The main control unit is also bidirectionally electrically connected to the communication unit, positioning unit, and voice interaction unit, respectively, and the power control terminal of the main control unit is connected to the controlled terminal of the controlled power distribution unit. Specifically, the controlled power distribution unit consists of multiple MOSFET switches or integrated load switch chips controlled by the I / O pins of the main control unit. The main control unit independently and sequentially provides or cuts off power to the communication unit, positioning unit, and voice interaction unit by controlling the controlled power distribution unit. The communication unit is a cellular mobile communication module or a satellite communication module, and the positioning unit is a Global Navigation Satellite System (GNSS) module, supporting GPS, BeiDou, or a combination thereof.

[0024] The voice interaction unit includes a microphone and a speaker. The housing 1 has a speaker hole 3 corresponding to the speaker and a microphone hole 4 corresponding to the microphone.

[0025] The outer casing 1 is provided with a mounting plate 6, and the mounting plate 6 has mounting holes 7. The switch module is installed in the vehicle using screws through the mounting holes 7.

[0026] The working principle of this utility model is as follows: Normal state: When the vehicle is in motion, the main power supply powers the main control unit via the automatic power switching unit and charges the backup power unit via the charging management unit. The main control unit controls the controlled power distribution unit to disconnect the power supply to all peripheral units, and the switching module is in an ultra-low power standby state.

[0027] Accident Trigger: After the main power supply is interrupted, the automatic power switching unit instantly switches to the backup power unit to continue operating the main control unit. After the user triggers the alarm by pressing the emergency call button 2, the main control unit controls the controlled power distribution unit according to the preset sequence: First, it powers the positioning unit and acquires coordinates; second, it powers the communication unit and registers with the network, sends data and coordinates; third, after establishing the connection, it powers the voice interaction unit and enters two-way communication mode.

Claims

1. A vehicle-mounted emergency call switch module with backup power supply, comprising a housing (1), characterized in that: The outer casing (1) is provided with an emergency call button (2) and a main power interface (5) for connecting the vehicle electrical system. The interior of the outer casing (1) is provided with a main control unit, a communication unit, a positioning unit, a voice interaction unit, a backup power unit, an automatic power switching unit and a controlled power distribution unit. The output terminals of the main power interface (5) and the backup power unit are both connected to the input terminal of the automatic power switching unit. The output terminal of the automatic power switching unit is connected to the power input terminal of the main control unit, and the working power pin of the automatic power switching unit is connected to its own output terminal. The power output terminal of the main control unit is connected to the input terminal of the controlled power distribution unit, and the output terminal of the controlled power distribution unit is connected to the power input terminals of the communication unit, the positioning unit, and the voice interaction unit, respectively. The signal output terminal of the emergency call button (2) is connected to the signal input terminal of the main control unit. The main control unit is also bidirectionally electrically connected to the communication unit, the positioning unit and the voice interaction unit respectively. The power control terminal of the main control unit is connected to the controlled terminal of the controlled power distribution unit.

2. The vehicle-mounted emergency call switch module with backup power supply according to claim 1, characterized in that: The emergency call button (2) is a button recessed into the outer casing (1) to prevent accidental touch.

3. The vehicle-mounted emergency call switch module with backup power supply according to claim 1, characterized in that: The voice interaction unit includes a microphone and a speaker. The housing (1) has a speaker hole (3) corresponding to the speaker and a microphone hole (4) corresponding to the microphone.

4. The vehicle-mounted emergency call switch module with backup power supply according to claim 1, characterized in that: The output end of the main power interface (5) is connected to a charging management unit located inside the housing (1), and the output end of the charging management unit is connected to the input end of the backup power unit.

5. A vehicle-mounted emergency call switch module with backup power supply according to claim 1, characterized in that: The controlled power distribution unit consists of multiple MOSFET switches or integrated load switch chips controlled by the I / O pins of the main control unit.

6. A vehicle-mounted emergency call switch module with backup power supply according to claim 1, characterized in that: The outer casing (1) is provided with a mounting plate (6), and the mounting plate (6) has mounting holes (7) for installing the switch module inside the vehicle.

7. A vehicle-mounted emergency call switch module with backup power supply according to claim 1, characterized in that: The communication unit is a cellular mobile communication module or a satellite communication module, the positioning unit is a global satellite navigation system module, and the backup power unit is a rechargeable supercapacitor or a lithium-ion battery.

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