Passenger safety monitoring alarm device

Abstract

The utility model relates to the technical field of automobile safety, and discloses a passenger safety monitoring alarm device. The device comprises a monitoring unit, a data processing and analyzing unit and an alarm prompting unit. And the monitoring unit monitors the states of passengers in the vehicle in all directions through the front-row monitoring camera, the first rear-row monitoring camera, the second rear-row monitoring camera and the vital sign detection millimeter wave radar. The data processing and analyzing unit receives the signal data of the monitoring unit, carries out comprehensive analysis and processing, and judges whether there is a passenger left in the vehicle or not. When it is detected that a passenger is left in the vehicle, the alarm prompt unit sends an alarm prompt to a driver through the visual and auditory alarm device, and remote alarm and information receiving are supported at the same time, so that the driver can obtain alarm information in time under the condition that the driver is far away from the vehicle. According to the device, potential safety hazards caused by forgetting passengers are effectively avoided, and the practicability and convenience of the device are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile safety technology discloses a passenger safety monitoring alarm device. BACKGROUND

[0002] With the popularization of automobile use, the passenger safety problem is paid more and more attention. Especially, the unexpected event caused by the children left in the car happens from time to time, which constitutes a serious threat to the life safety of passengers. The traditional automobile safety system mainly focuses on the collision warning and brake assistance in the vehicle driving process, but lacks effective monitoring for the problem whether the passenger is forgotten after parking. Therefore, it is particularly important to develop a device capable of monitoring the passenger state in the car and issuing an alarm to the driver when detecting the left passenger. SUMMARY

[0003] In view of the above technical deficiencies, the utility model aims at providing a passenger safety monitoring alarm device to solve the problem of lack of effective monitoring for whether the passenger is forgotten after parking in the prior art.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] In the first aspect, the utility model provides a passenger safety monitoring alarm device, which comprises a monitoring unit, a data processing and analysis unit and an alarm prompt unit.

[0006] The monitoring unit and the data processing and analysis unit are connected by wire, and the data processing and analysis unit and the alarm prompt unit are connected by CAN bus cable.

[0007] The monitoring unit is responsible for acquiring the signal data in the car.

[0008] The data processing and analysis unit receives the signal data from the monitoring unit and performs comprehensive analysis and processing.

[0009] The alarm prompt unit issues an alarm prompt to the driver when detecting that a passenger is left in the car according to the output result of the data processing and analysis unit.

[0010] Preferably, in a possible implementation of the first aspect, the monitoring unit comprises a front-row monitoring camera, a first rear-row monitoring camera, a second rear-row monitoring camera and a vital sign detection millimeter wave radar arranged in the car.

[0011] Preferably, in a possible implementation of the first aspect, the front-row monitoring camera, the first rear-row monitoring camera and the second rear-row monitoring camera are connected to the data processing and analysis unit through HDMI video transmission line, and the vital sign detection millimeter wave radar is connected to the data processing and analysis unit through coaxial cable.

[0012] Preferably, in a possible implementation form of the first aspect, the in-vehicle signal data comprises video data acquired by a front-row monitoring camera, a first rear-row monitoring camera, a second rear-row monitoring camera and millimeter wave radar data acquired by a vital sign detection millimeter wave radar.

[0013] Preferably, in a possible implementation form of the first aspect, the data processing and analysis unit comprises a processor unit for receiving and processing the in-vehicle signal data from the monitoring unit, the processor unit being capable of performing real-time analysis on the received in-vehicle signal data to determine whether there is a left-behind passenger in the vehicle.

[0014] Preferably, in a possible implementation form of the first aspect, the data processing and analysis unit further comprises a storage unit for storing the received in-vehicle signal data and the analysis result.

[0015] Preferably, in a possible implementation form of the first aspect, the data processing and analysis unit enters a working state when the driver stops driving, leaves the vehicle and completes locking of the vehicle; and stops working if no left-behind passenger is found within a preset time after entering the working state.

[0016] Preferably, in a possible implementation form of the first aspect, the alarm prompting unit comprises a visual alarm device and an audible alarm device for providing alarm information to the driver when a left-behind passenger is detected.

[0017] Preferably, in a possible implementation form of the first aspect, the alarm prompting unit further comprises a remote control interface, through which the driver can remotely receive alarm information and remotely set or turn off the alarm function of the device through a terminal device.

[0018] The utility model discloses the beneficial effect lies in: through integration monitoring unit, data processing and analysis unit and alarm prompting unit, have realized all -round monitoring to the passenger in the vehicle. When detecting that a passenger is left in the vehicle, can send alarm prompt to the driver in time, effectively avoided the security risk that forgets the passenger. Meanwhile, the device also supports remote alarm and information receiving, so that the driver can also obtain alarm information in time under the condition of being away from the vehicle, enhances the practicality and convenience of the device. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 A structural diagram of a passenger safety monitoring alarm device is provided for the present application. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0022] Embodiment one: as shown, the present application provides a passenger safety monitoring alarm device, comprising a monitoring unit, a data processing and analysis unit, and an alarm prompt unit. Figure 1

[0023] The monitoring unit and the data processing and analysis unit are connected by wire, and the data processing and analysis unit and the alarm prompt unit are connected by CAN bus cable.

[0024] The monitoring unit is responsible for acquiring in-vehicle signal data, including a front-row monitoring camera, a first back-row monitoring camera, a second back-row monitoring camera, and a vital sign detection millimeter wave radar.

[0025] Specifically, the front-row monitoring camera, the first back-row monitoring camera, and the second back-row monitoring camera are directly connected to the data processing and analysis unit through HDMI video transmission lines, and the vital sign detection millimeter wave radar is connected to the data processing and analysis unit through a coaxial cable.

[0026] In the present embodiment, the front-row monitoring camera is installed above the driver's cabin and is responsible for monitoring the state of the front-row passengers; the first back-row monitoring camera is installed on the central top of the rear of the vehicle and covers the first back-row passenger area; the second back-row monitoring camera is installed at the last part of the vehicle and monitors the last row of passengers; and the vital sign detection millimeter wave radar is installed on the top of the vehicle and detects vital signs using millimeter wave technology, which is suitable for all seat areas.

[0027] The data processing and analysis unit receives signal data from the monitoring unit and performs comprehensive analysis and processing.

[0028] ​Specifically, the data processing and analysis unit includes a processor unit, in this embodiment, a Snapdragon 8 Gen 1 chip, for receiving and processing the in-vehicle signal data from the monitoring unit. The processor unit is capable of real-time analysis of the received in-vehicle signal data to identify the behavior patterns, vital sign states, and the presence of left-behind passengers of the passengers in the vehicle. The data processing and analysis unit also includes a storage unit for storing the received in-vehicle signal data and the results of the analysis.

[0029] When the driver stops driving, leaves the vehicle, and completes the locking of the vehicle, the data processing and analysis unit enters a working state, sends a data collection instruction to the monitoring unit, and the monitoring unit sends the video data and millimeter wave data to the data processing and analysis unit.

[0030] The processor unit first pre-processes the received video data, including denoising, format conversion, frame rate adjustment, and color adjustment, to improve the clarity and usability of the video data.

[0031] Subsequently, the processor unit frames the video every 3 seconds to obtain monitoring image data, uses image detection algorithms and image recognition algorithms to extract useful features from the monitoring image data, and identifies the received video data through a machine learning model to determine whether there is a left-behind passenger. When two consecutive monitoring images detect a left-behind passenger, the processor determines that there is a left-behind passenger in the vehicle and stores it as the first determination result.

[0032] For vital sign detection millimeter wave radar signals, the millimeter wave radar transmits frequency-modulated continuous waves that are scanned at a certain frequency and time interval. The radar antenna receives the reflected signals from the target in the vehicle, which contain the distance, speed, and vital sign information of the target. The processor unit pre-processes the received reflected signals, including filtering, denoising, amplification, and other steps, to improve the signal-to-noise ratio and reliability of the signals.

[0033] The pre-processed signals are subjected to a Fourier transform in the distance dimension to determine the distance of the target object. Within a specific distance unit, the phase change of the reflected signal is analyzed. Since breathing and heartbeat cause periodic fluctuations on the surface of the chest, these fluctuations cause slight changes in the phase of the reflected signal. A bandpass filter is used to separate the breathing and heartbeat signals from the mixed signal. The frequency, amplitude, and other characteristic parameters of the breathing and heartbeat signals are extracted for vital sign judgment. Whether the extracted breathing and heartbeat signal characteristic parameters are within the normal range determines whether there is a vital sign in the vehicle. The normal range set in this embodiment is 10 to 25 times per minute for the breathing frequency and 50 to 120 times per minute for the heartbeat frequency.

[0034] If the result of the judgment is that there is a vital sign, the processor judges that there is a left-behind passenger in the vehicle and stores it as a second judgment result.

[0035] If the first judgment result and the second judgment result both show that there is a left-behind passenger in the vehicle, the output of the left-behind passenger in the vehicle is output to the alarm prompt unit.

[0036] If the data processing and analysis unit enters the working state for 10 minutes without the occurrence of the left-behind passenger in the vehicle, it is judged that there is no left-behind passenger in the vehicle, and the data processing and analysis unit stops working.

[0037] The alarm prompt unit sends an alarm prompt to the driver according to the output result of the data processing and analysis unit.

[0038] Specifically, the alarm prompt unit includes a visual alarm device, such as an indicator light, and an audible alarm device, such as a loudspeaker, for providing visual alarm information to the driver when a left-behind passenger is detected. When the processor unit detects that a passenger is left in the vehicle, the indicator light will light up to provide visual alarm information to the driver, and the loudspeaker will emit an alarm sound to remind the driver to pay attention.

[0039] The alarm prompt unit also includes a remote control interface, and the driver can remotely receive alarm information through terminal equipment and remotely set or turn off the alarm function of the device through these equipment.

[0040] Specifically, the alarm prompt unit is built-in wireless communication unit, and establishes a connection with the terminal equipment of the driver. When a left-behind passenger is detected, the alarm prompt unit sends alarm information to the terminal equipment of the driver through the wireless communication unit. The driver can remotely set the alarm prompt unit (such as adjusting the alarm volume, setting the alarm mode, etc.) or turn off the alarm function through the terminal equipment.

[0041] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A passenger safety monitoring alarm apparatus, characterized by, The device comprises a monitoring unit, a data processing and analysis unit and an alarm prompting unit; The monitoring unit and the data processing and analysis unit are connected by wire, and the data processing and analysis unit and the alarm prompting unit are connected by CAN bus cable; The monitoring unit is responsible for obtaining in-vehicle signal data; The monitoring unit comprises a front-row monitoring camera, a first back-row monitoring camera, a second back-row monitoring camera and a vital sign detection millimeter wave radar arranged in the vehicle; The front-row monitoring camera, the first back-row monitoring camera and the second back-row monitoring camera are connected to the data processing and analysis unit through HDMI video transmission line, and the vital sign detection millimeter wave radar is connected to the data processing and analysis unit through coaxial cable; The data processing and analysis unit receives signal data from the monitoring unit and performs comprehensive analysis and processing; The alarm prompting unit sends an alarm prompt to the driver when detecting that a passenger is left in the vehicle according to the output result of the data processing and analysis unit; The alarm prompting unit further comprises a remote control interface, and the driver can remotely receive alarm information through a terminal device and can remotely set or turn off the alarm function of the device through the terminal device.

2. The passenger safety monitoring alarm apparatus according to claim 1, wherein The in-vehicle signal data comprises video data obtained by the front-row monitoring camera, the first back-row monitoring camera and the second back-row monitoring camera, and millimeter wave radar data obtained by the vital sign detection millimeter wave radar.

3. The passenger safety monitoring alarm apparatus according to claim 1, wherein The data processing and analysis unit comprises a processor unit for receiving and processing in-vehicle signal data from the monitoring unit, which can analyze the received in-vehicle signal data in real time to determine whether there is a left passenger in the vehicle.

4. The passenger safety monitoring alarm apparatus according to claim 1, wherein The data processing and analysis unit further comprises a storage unit for storing the received in-vehicle signal data and the analysis result.

5. The passenger safety monitoring alarm apparatus according to claim 1, wherein The data processing and analysis unit enters a working state when the driver stops driving, leaves the vehicle and completes the locking of the vehicle; and stops working if no left passenger is found within a preset time after entering the working state.

6. The passenger safety monitoring alarm apparatus according to claim 1, wherein The alarm prompting unit comprises a visual alarm device and an audible alarm device for providing alarm information to the driver when detecting a left passenger.

Images