Detection and alarm device for staying persons in vehicle

Abstract

The utility model provides a device for detecting and alarming staying persons in a car, which relates to the technical field of cars and comprises an intelligent control unit, an information acquisition unit, a sound-light alarm unit and a display unit which are arranged on a school car, and a wireless communication unit is arranged in the intelligent control unit. The information acquisition unit detects whether a passenger passes by or stays at a detection position, and the intelligent control unit receives and analyzes a signal sent by the information acquisition unit, and then controls the sound-light alarm unit to make a sound and flicker according to a certain frequency. And the display unit is controlled to display the number of passengers in the vehicle and the passenger retention position numbers in the alarm state. According to the school bus, safety accidents caused by the fact that passengers are forgotten in the bus can be avoided, information can be sent to the server through the wireless communication unit, then the server forwards the information to mobile phones of parents, and when students stay in the school bus, the related parents, drivers and school security guards can receive related information through the mobile phones to remind.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile, especially to a kind of in-vehicle personnel detection and alarm device. BACKGROUND

[0002] In-vehicle passenger forgetting event often causes serious safety accidents, and the characteristics of small size of young child passengers and easy to sleep when taking the car, often appear to be forgotten in the car, school bus forgetting event often causes major safety accidents, and relevant reports of death are not uncommon. INVENTION CONTENTS

[0003] To solve the technical problem that passenger is forgotten in the car in prior art causes major safety accidents, the utility model provides a kind of in-vehicle personnel detection and alarm device;

[0004] The in-vehicle personnel detection and alarm device provided by the utility model adopts the following technical scheme:

[0005] An in-vehicle personnel detection and alarm device, comprising an intelligent control unit, an information acquisition unit, an audible and light alarm unit and a display unit arranged on a school bus, wherein the information acquisition unit detects whether a passenger passes through or stays at a detection position, the intelligent control unit receives a signal sent by the information acquisition unit and analyzes the signal, then controls the audible and light alarm unit to emit sound and flashing light at a certain frequency, and controls the display unit to display the number of passengers in the car and the passenger staying position number when the alarm is activated, and the intelligent control unit is provided with a wireless communication unit capable of sending information to the outside.

[0006] Further, the intelligent control unit is composed of an STC89C516RD+ single-chip microcomputer and its peripheral circuit installed on the school bus.

[0007] Further, the information acquisition unit is an optical-electric sensor, which comprises a transmitting tube and a receiving tube arranged inside the school bus, and outputs a low level when an object blocks light between the two tubes, and outputs a high level when there is no object, and the intelligent control unit judges whether a passenger passes through or stays at the detection position according to the state of the level signal.

[0008] Further, the audible and light alarm unit comprises a buzzer and a red warning light, and the red warning light is arranged on the upper side of the inner wall of the school bus, and the buzzer is also arranged on the upper side of the inner wall of the school bus, and the buzzer is used to emit alarm sound when the alarm is activated.

[0009] Furthermore, the display unit uses two sets of digital tubes to display the number of people in the vehicle and the passenger's location number when an alarm is triggered. The two sets of digital tubes are a display screen and a passenger's seat number display screen. The school bus is equipped with a display screen to display the number of people in the vehicle. A passenger's seat number display screen is also installed on the upper side of the inner wall of the school bus to display the passenger's location number when a passenger is confirmed to be stranded.

[0010] Furthermore, there are multiple passenger seats on both sides of the school bus, and an aisle between the passenger seats on both sides of the school bus. Photoelectric sensors are installed on each passenger seat and in the aisle to detect whether any passengers are left in the vehicle. Each passenger seat has a seat number, and each set of photoelectric sensors is assigned a corresponding number according to the seat number. Photoelectric sensors are also installed on the driver's seat inside the school bus to detect whether the driver has left the vehicle.

[0011] Furthermore, a passenger counter is installed inside the school bus to count the number of passengers on board.

[0012] Furthermore, a total of 10 pairs of photoelectric sensors were installed inside the school bus, each in a pair and staggered in position on each seat and in the aisle.

[0013] Furthermore, two sets of photoelectric sensors, one inside and one outside, are installed at the door.

[0014] In summary, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model achieves comprehensive in-vehicle detection and real-time monitoring of passenger congestion through an intelligent control unit and information acquisition unit. Information interaction is provided via a seat number display screen in the display unit, which intuitively shows the location number of congested passengers, facilitating timely identification of congestion areas. A wireless communication unit can send information to a server, which then forwards the information to the mobile phones of each parent. When there are congested students on the school bus, relevant parents, drivers, and school security guards can receive relevant notifications via their mobile phones.

[0016] 2. The information collection unit counts the number of passengers on board, intelligently determines passengers getting on and off the bus, accurately counts the number of people in the bus, and displays the number of passengers in the bus in real time on the display screen.

[0017] 3. The alarm method of this utility model combines sound and light through an audible and visual alarm unit, which has a significant reminder effect. The intelligent control unit is equipped with an STC89C516RD+ microcontroller. This digital integrated chip has intelligent response, anti-interference ability, and stable operation. This utility model can effectively prevent safety accidents caused by children, especially toddlers, being forgotten in the vehicle. Attached Figure Description

[0018] Figure 1 This is a top view schematic diagram of the school bus model of this utility model;

[0019] Figure 2 This is a side view schematic diagram of the school bus model of this utility model;

[0020] Figure 3 This is a schematic diagram of the electrical schematic of this utility model.

[0021] In the diagram: 1-transmitter tube, 2-receiver tube, 3-display screen, 4-red warning light, 5-buzzer, 6-seat number display for stranded personnel, 7-school bus, 8-passenger seat, 9-door. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0023] Example: Figure 1 , Figure 2 , Figure 3 The image shows a device for detecting and alarming people remaining inside a vehicle.

[0024] Forgotten passengers on school buses frequently cause serious safety accidents. Young children, due to their small size and tendency to fall asleep while traveling, are often forgotten on school buses. Reports of such incidents resulting in fatalities are not uncommon. To address this issue, this utility model discloses a device for detecting and alarming passengers left behind on school buses. Utilizing modern microcontroller control, communication, and sensor technologies, it aims to solve various dangerous situations caused by children being forgotten or locked inside school buses. The device includes an intelligent control unit, an information acquisition unit, an audible and visual alarm unit, and a display unit. The intelligent control unit consists of an STC89C516RD+ microcontroller and its peripheral circuitry installed on the school bus. This unit is the core of the entire device, responsible for reading and analyzing information from photoelectric sensors and controlling other units to perform alarm, counting, and display functions as required. The intelligent control unit also includes a wireless communication unit that can send information to a server, which then forwards the information to the mobile phones of parents. When a student is left behind on the school bus, the parents, driver, and school security guards can receive relevant notifications via their mobile phones. The information acquisition unit is a photoelectric sensor, which includes a transmitting tube 1 and a receiving tube 2 installed inside the school bus 7. When there is an object blocking the light between the two tubes, it outputs a low level, and when there is no obstruction, it outputs a high level. The intelligent control unit determines whether a passenger has passed by or stayed at the location based on the state of the level signal.

[0025] The audible and visual alarm unit includes a buzzer 5 and a red warning light 4. The red warning light 4 is located on the upper side of the inner wall of the school bus 7, and the buzzer 5 is also located on the upper side of the inner wall of the school bus 7. The buzzer 5 is used to emit an alarm sound when an alarm is triggered. When an alarm is triggered, the intelligent control unit controls the audible and visual alarm unit to emit sound and flash light at a certain frequency.

[0026] The display unit uses two sets of digital tubes to display the number of people in the vehicle and the passenger's location number when an alarm is triggered. The two sets of digital tubes are display screen 3 and passenger seat number display screen 6. The school bus 7 is equipped with display screen 3 to display the number of people in the vehicle, and passenger seat number display screen 6 is also located on the upper side of the inner wall of the school bus 7 to display the passenger's location number when a passenger is confirmed to be stranded.

[0027] Photoelectric sensors are installed in each passenger seat 8 and along the aisle of the school bus 7 to detect whether any passengers are left behind. Each passenger seat 8 has a seat number, and each set of photoelectric sensors is assigned a corresponding number based on that seat. A photoelectric sensor is also installed on the driver's seat in the school bus 7 to detect whether the driver has left the vehicle. If the driver leaves the driver's seat and a person is detected remaining in another location on the bus, an audible and visual alarm will be triggered, and the location number of the remaining passenger will be displayed on the passenger number display screen 6. A passenger counter is also installed in the school bus 7 to count the number of passengers on board.

[0028] Ten pairs of photoelectric sensors are installed inside school bus 7. These are installed in pairs and staggered in position at each seat and along the aisle to detect passenger lingering. Two sets of photoelectric sensors, one inside and one outside, are installed at door 9 to detect passengers getting on and off. When someone enters the vehicle from the outside of door 9, they will first block the outer photoelectric sensor and then the inner one. The intelligent control unit will then determine that someone is boarding. Conversely, if the inner photoelectric sensor is blocked first and then the outer one, it will determine that someone is getting off.

[0029] During operation, photoelectric sensors detect whether anyone is remaining in the driver's seat or passenger seat 8. When the driver is detected leaving the driver's seat, and other passengers are also detected remaining in other locations on the vehicle, the intelligent control unit will promptly issue an audible and visual alarm signal via buzzer 5 and red warning light 4 to alert the driver or people outside the vehicle that there are passengers remaining inside. The intelligent control unit also controls the seat number display screen 6 to count and display the number of passengers inside the vehicle, providing information for the driver's reference.

[0030] To verify the feasibility of the above device, the developers built a school bus model using plastic sheets. The model included a driver's seat and passenger seats, with photoelectric sensors installed at the seats, aisle, and doors. A display screen was installed on the side of the vehicle. A control circuit board was installed at the bottom of the vehicle. The circuit board, digital display, buzzer 5, red warning light 4, and photoelectric sensors were installed on the school bus model. The red warning light 4 is an LED light. During installation, special attention was paid to the installation accuracy of each set of photoelectric sensors, ensuring that the central axes of the transmitting tube 1 and the receiving tube 2 were on the same straight line. The transmitting tube 1 and the receiving tube 2 are a pair; to prevent interference between pairs, adjacent pairs were staggered (e.g., ...). Figure 1 As shown in the diagram, the transmitting tube 1 of this group and the receiving tube 2 of the other group are installed on the same side, thus avoiding mutual interference caused by adjacent groups of tubes being too close. After multiple installations and debugging, the entire system functioned, and each pair of tubes can accurately detect whether there is an object blocking the way. Under normal circumstances, the digital tube displaying the seat number does not display any information; it only displays the seat number when a passenger is delayed. The digital tube displaying the number of passengers shows the number of people on the train in real time. The two pairs of tubes set at the door can accurately determine whether passengers are getting on or off the train. During the experiment, a bank card was used for testing. When a passenger passes through the outer pair of tubes from outside the door and then the inner pair of tubes, the digital tube displaying the number of passengers automatically increments by 1; otherwise, it automatically decrements by 1. The intelligent control unit also has the function of automatically sending SMS notifications when passengers get on or off the train. This setting also addresses the occasional situation where a passenger only steps onto the train to look around but does not actually board. In this case, the passenger only blocks the outer sensor and does not continue to block the inner sensor. In this situation, it is considered that there is no boarding counter and no reaction is made. This mode also applies to situations where a passenger gets off the train, reaches the door, and then returns to their seat. After numerous experiments and adjustments, the design requirements were finally met, and it was able to work stably for extended periods.

[0031] The intelligent control unit, information acquisition unit, audible and visual alarm unit, display unit, vehicle model, and other units in the device are all functioning normally, and the communication and control between the units meet the expected design requirements. When the driver leaves the seat, the microcontroller will control the relevant units to immediately scan the remaining seats and aisle. If a lingering passenger is detected, the audible and visual alarm unit will be triggered to enter alarm mode, and the seat number of the lingering passenger will be displayed on the display unit. If there are multiple lingering passengers, the digital tube will cycle through the lingering seat numbers. If the passenger is lingering in the aisle, the digital tube will display a "--" symbol.

[0032] This device uses the STC89C516RD+ microcontroller as its core component. Utilizing photoelectric detection technology, dynamic digital display methods, and a unique software algorithm, it achieves functions such as detecting stranded passengers, displaying seat numbers, and counting statistics, ultimately enabling the device to fulfill its design requirements. Throughout the design process, the hardware circuitry was kept simple, and various technologies such as sound, light, and electricity were comprehensively applied. Special installation methods were employed to optimize sensor sensitivity, and the convenient and flexible nature of software programming was fully utilized to meet the system design requirements.

[0033] Several key issues were encountered during the design process. For example, the detection signal was unstable. Upon inspection, this problem was found to be closely related to the mechanical parts of the school bus model. Ultimately, the installation positions of the seats, corridors, panels, and sensors within the school bus model were rationally adjusted, enabling accurate signal detection. The digital tube display uses two sets of two-digit common-anode digital tubes with a dynamic display method, which not only saves hardware resources but also improves system stability.

[0034] This device, through professional manufacturing technology and highly integrated design, enables full-vehicle visual scanning, more accurately determining whether any passengers have been forgotten inside. By incorporating video transmission and mobile app technology into the intelligent control unit, parents can monitor their children's boarding and alighting via their smartphones.

[0035] By adopting IoT and big data solutions, multi-departmental joint monitoring can be achieved. This not only monitors passenger forgetting situations, but also monitors road conditions, vehicle speed, and driving routes, enabling timely prediction and prevention of various accidents.

[0036] This device achieves comprehensive in-vehicle detection through an intelligent control unit and an information acquisition unit, enabling real-time monitoring of passenger confinement. Information interaction is provided through the seat number display screen 6 in the display unit, which clearly shows the location number of confined passengers, facilitating timely identification of the confinement area. The information acquisition unit counts the number of passengers on board, intelligently determining passengers getting on and off, and accurately counting the number of people inside the vehicle. The number of passengers inside the vehicle is displayed in real-time on the display screen 3. The alarm system combines sound and light, providing a clear and effective alert. Utilizing the STC89C516RD+ microcontroller, a digital integrated chip, it features intelligent response, anti-interference capabilities, and stable operation. This invention effectively prevents safety accidents caused by children, especially toddlers, being forgotten inside the vehicle.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting and alarming people remaining inside a vehicle, comprising an intelligent control unit, an information acquisition unit, an audible and visual alarm unit, and a display unit installed on a school bus (7), characterized in that, The information collection unit detects whether passengers have passed by or stayed at the detection location. The intelligent control unit receives the signal sent by the information collection unit and analyzes it. Then, it controls the sound and light alarm unit to emit sound and flash light at a certain frequency. It also controls the display unit to display the number of people in the vehicle and the passenger's location number when the alarm is triggered. The intelligent control unit is equipped with a wireless communication unit that can send information to the outside. The information collection unit is a photoelectric sensor. It is located inside the school bus (7) and has passenger seats (8) and a corridor. The photoelectric sensor is installed on the passenger seats (8) and the corridor. The photoelectric sensor is used to detect whether there are passengers staying in the vehicle. The passenger seats (8) have seat numbers. Each group of photoelectric sensors is assigned a corresponding number according to the seat number. The driver's seat inside the school bus (7) is also equipped with a photoelectric sensor to detect whether the driver has left the vehicle.

2. The vehicle in-car occupant detection and alarm device according to claim 1, characterized in that, The intelligent control unit consists of an STC89C516RD+ microcontroller and its peripheral circuits installed on the school bus (7).

3. The vehicle in-car occupant detection and alarm device according to claim 2, characterized in that, The photoelectric sensor includes a transmitting tube (1) and a receiving tube (2) installed inside the school bus (7). When there is an object blocking the light between the two tubes, it outputs a low level, and when there is no obstruction, it outputs a high level. The intelligent control unit determines whether a passenger has passed by or stayed at the detection position based on the state of the level signal.

4. The vehicle in-car occupant detection and alarm device according to claim 3, characterized in that, The sound and light alarm unit includes a buzzer (5) and a red warning light (4). The red warning light (4) is located on the upper side of the inner wall of the school bus (7), and the buzzer (5) is also located on the upper side of the inner wall of the school bus (7). The buzzer (5) is used to emit an alarm sound when an alarm is triggered.

5. The vehicle in-car occupant detection and alarm device according to claim 4, characterized in that, The display unit uses two sets of digital tubes to display the number of people in the vehicle and the passenger's location number when the alarm is triggered. The two sets of digital tubes are a display screen (3) and a passenger's seat number display screen (6). The school bus (7) is equipped with a display screen (3) to display the number of people in the vehicle. A passenger's seat number display screen (6) is also installed on the upper side of the inner wall of the school bus (7) to display the number of the passenger's location when it is determined that a passenger is stranded.

6. The vehicle in-car occupant detection and alarm device according to claim 5, characterized in that, There are multiple passenger seats (8) on both sides inside the school bus (7), and there is an aisle between the passenger seats (8) on both sides inside the school bus (7).

7. The vehicle in-car occupant detection and alarm device according to claim 6, characterized in that, The school bus (7) is also equipped with an in-vehicle passenger counter to count the number of passengers on board.

8. The vehicle in-car occupant detection and alarm device according to claim 7, characterized in that, Ten pairs of photoelectric sensors were installed inside the school bus (7), and they were installed in pairs and staggered in each seat and aisle.

9. A vehicle-in-car occupancy detection and alarm device according to claim 8, characterized in that, Two sets of photoelectric sensors, one inside and one outside, are installed at the door (9).

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