An intelligent on-board security system for buses

Abstract

This application relates to the field of intelligent automotive systems, and more particularly to an intelligent onboard security system for buses. The system comprises a processor, including a database, for receiving and processing various signals, and then outputting corresponding situation signals; an alarm module for generating an alarm, receiving a situation signal, and outputting a corresponding alarm signal; a seat detection module for detecting seat pressure and outputting a corresponding seat pressure signal to the processor; a vehicle speed detection module for detecting the speed of the bus and outputting a corresponding bus speed signal to the processor; and an interference module for spraying, lighting, and receiving situation signals. This application improves bus safety.

Description

Technical Field

[0001] The present application relates to the field of automobile intelligent systems, and in particular to an intelligent on-board security system for buses. Background Art

[0002] With the development and popularization of intelligent technology, in order to liberate manpower and facilitate people, more and more monitoring functions are transferred from manual to intelligent systems.

[0003] As people's quality of life improves, the safety of various municipal projects is becoming increasingly important. Buses, as a key urban transportation project, are particularly important. When criminals act on buses, the driver is usually the first person to be apprehended. However, the buttons for typical alarm systems are located on the driver's seat, making it difficult for the driver to call the police. Therefore, there is an urgent need to develop an intelligent bus system to ensure bus security. Summary of the Invention

[0004] In order to improve the safety issues of buses, the present application provides an intelligent on-board security system for buses.

[0005] This application provides an intelligent onboard security system for buses, which adopts the following technical solutions:

[0006] An intelligent onboard security system for buses, comprising:

[0007] A processor, configured to receive and process various signals, and then output corresponding situation signals;

[0008] A database for storing threshold data;

[0009] The alarm module is used to issue an alarm. After receiving a signal indicating that an unexpected situation may occur to the driver or passengers, it outputs a corresponding alarm signal to issue an alarm.

[0010] a seat detection module, configured to detect seat pressure and output a corresponding seat pressure signal to the processor, wherein the database stores pressure interval threshold data. The processor compares the pressure data in the received pressure signal with the pressure interval threshold data read from the database to determine whether an accident has occurred with the driver or passenger;

[0011] a vehicle speed detection module, configured to detect the speed of the bus and output a corresponding bus speed signal to the processor, wherein the database stores speed interval threshold data. The processor compares the speed data in the received bus speed signal with the speed interval threshold data read from the database to determine whether the bus's driving status is abnormal;

[0012] The interference module is used for spraying and lighting the lights. After receiving the signal output by the processor indicating that an unexpected situation occurs to the passenger or the driver, the interference module sprays and lights the lights.

[0013] By adopting the above technical solution, the seat detection module detects the stress condition of the seat, thereby reflecting the driver's posture, and the speed detection module detects the state of the bus's driving speed, thereby reflecting the driver's driving state. The processor judges the seat pressure signal and the bus speed signal, thereby automatically identifying and judging whether there is a problem inside the bus. This greatly reduces the probability of untimely discovery of problems due to restricted driver actions, reduces the impact of problems, and greatly improves timeliness and bus safety.

[0014] Optionally, the seat detection module includes:

[0015] a seat cushion detection submodule, configured to detect seat cushion pressure and output a corresponding seat cushion pressure signal to the processor, wherein the database stores seat cushion pressure interval threshold data. The processor compares the seat cushion pressure data in the received seat cushion pressure signal with the seat cushion pressure interval threshold data read from the database to determine whether an accident has occurred to the driver or passenger;

[0016] a seat back front detection submodule, configured to detect seat back front pressure and output a corresponding front pressure signal to the processor, wherein the database stores front pressure interval threshold data. The processor compares the front pressure data in the received front pressure signal with the front pressure interval threshold data read from the database to determine whether an accident has occurred to the driver or passenger;

[0017] The backrest reverse detection submodule is used to detect the back pressure of the seat back and output a corresponding back pressure signal to the processor. The database stores back pressure interval threshold data. The processor compares the back pressure data in the received back pressure signal with the back pressure interval threshold data read from the database to determine whether an accident has occurred to the driver or passenger.

[0018] By adopting the above technical solution, the seat cushion detection submodule and the backrest front detection submodule are used to more accurately detect the forces at different positions of the seat, so that the processor can make a more accurate judgment on the driver's posture. The backrest back detection submodule is used to detect ropes and other binding objects. For example, when the driver is tied to the seat with a rope, the rope will inevitably need to be wrapped around the seat, and the front of the seat back is pressed by the driver's back, so the back of the seat back will be directly subjected to the pressure of the rope, thereby being able to more accurately judge whether the driver's movements are restricted.

[0019] Optional, including:

[0020] a position detection module, configured to detect the position of a person in the vehicle and output a corresponding coordinate signal to the processor. The database stores coordinate threshold data. The processor compares the coordinate data in the received coordinate signal with the coordinate threshold data read from the database to determine whether the passenger's position is abnormal;

[0021] The height detection module is used to detect the height of people in the car and output a corresponding height signal to the processor. The database stores height threshold data. The processor compares the height data in the received height signal with the excessive threshold data read from the database to determine whether the passenger's height is abnormal.

[0022] If the processing determines that both the position and the height of the passenger are abnormal, a signal indicating that an unexpected situation has occurred with the passenger is output to the alarm module.

[0023] By adopting the above technical solution, the positions of the driver and the passenger are detected by the position detection module, and the processor is used to determine whether the driver and the passenger are on the seats. The postures of the driver and the passenger are detected by the height detection module, and the processor is used to determine whether the driver and the passenger in the aisle are standing or squatting under duress, thereby making the automatic judgment more accurate, further improving the accuracy and safety of the bus, and improving the reliability of the automatic judgment.

[0024] Optional, including:

[0025] A receiving module receives a driving signal and outputs a feedback signal;

[0026] The sending module outputs the driving signal and receives the feedback signal;

[0027] The receiving module includes an alarm submodule, and the alarm submodule is used to receive a driving signal. If the alarm submodule does not receive a driving signal, the alarm submodule outputs a corresponding alarm signal to remind the staff.

[0028] By adopting the above technical solution, the communication between the receiving module and the sending module is used to determine whether the bus has entered a section with no signal. If the bus has entered a section with no signal, the alarm submodule is used to remind the staff to pay attention.

[0029] Optional, including:

[0030] The recording module receives the feedback signal and the bus speed signal, and receives and records the bus speed signal from the speed detection module when no feedback signal is received.

[0031] By adopting the above technical solution, if the bus enters a signal-free section, the communication between the receiving module and the sending module is disconnected. At this time, the recording module starts to record the bus speed signal speed, thereby playing the role of a black box. After the bus exits the signal-free section, the staff can check the driving status of the bus in the signal-free section to facilitate summary and reduce the probability of accidents involving buses in signal-free sections in the future.

[0032] Optionally, the alarm submodule includes:

[0033] Positioning secondary submodule, outputs the bus positioning signal;

[0034] The timing sub-module is used for timing, receiving the positioning signal, and outputting the timing signal to the processor. The database stores the position data and the passing time data corresponding to the position data. The timing sub-module starts timing after not receiving the positioning signal. After the processor does not receive the positioning signal, the positioning data in the positioning signal is compared with the position data read from the database to determine at which position the bus lost contact. The processor compares the timing data in the received timing signal with the corresponding passing time data to determine whether the bus encountered an accident in the lost contact section. If so, the processor outputs a corresponding response signal to the alarm module to issue an alarm.

[0035] By adopting the above technical solution, when a bus enters a signal-free section, the position data is judged by the latest positioning signal received before the positioning signal is lost, and the passing time data corresponding to the position data is read. It is estimated that the bus will exit the signal-free section within the time corresponding to the passing time data. If the time of the timing data is greater than the time corresponding to the passing time data, it means that the driving state of the bus in the signal-free section is abnormal, which means that the bus may encounter an unexpected situation in the signal-free section, so the alarm module is used to remind the staff, so that the safety of the bus can still be monitored when it is in the signal-free section, further improving the safety of the bus and the reliability of the system.

[0036] Optional, including:

[0037] an acceleration detection module, which receives a bus speed signal and calculates acceleration, and outputs a corresponding acceleration signal to the processor. The database stores acceleration threshold data. The processor compares the acceleration data in the received acceleration signal with the acceleration threshold data read from the database to determine whether the bus's driving state is abnormal;

[0038] The protection module is used to deploy airbags to protect the driver and passengers, and receives a situation signal. If the protection module receives a situation signal indicating that the passenger is abnormal, the airbag will be deployed.

[0039] By adopting the above technical solution, when the bus is hit and produces abnormal acceleration, it can be detected by the acceleration detection module and the corresponding acceleration signal can be output to the processor. After the processor determines the abnormality, it protects the driver and passengers through the protection module, thereby playing the role of pop-up protection when the bus shell is hit, and reducing the probability of the airbag popping out after the deformation of the interior of the bus after the collision threatens the driver and passengers, so that the protection measures can be taken in advance, further improving the safety of the bus.

[0040] Optional, including:

[0041] A pressure detection module, used to detect the pressure on the bus shell and output a force signal to the processor;

[0042] A pressure time module, used to detect the time the bus is subjected to pressure and output a pressure time signal to the processor;

[0043] The database stores impact threshold data. The processor calculates the force data in the received force signal and the pressure time data in the received pressure time signal to obtain the impact force data of the bus, and then compares the calculated impact force data with the impact threshold data read from the database to estimate the damage to the bus. If it is estimated that the damage to the bus will cause injury to the passengers or the driver, the corresponding situation signal is output to activate the protection module at the corresponding position.

[0044] By adopting the above technical solution, the pressure detection module is used to determine which position of the bus is hit and the magnitude of the impact pressure. At the same time, the pressure time signal detected by the pressure time module is combined with the force signal to calculate the pressure acceleration data, so as to predict the impact inertia of the bus and start the protection module in a targeted manner. For example, when hit by a small mass such as a bicycle, the initial pressure is large, but the subsequent pressure decreases very quickly, so the damage caused is small, that is, the inertia is small. If it is hit by a large mass such as a passenger car, the initial pressure is also large, but the subsequent pressure decreases at a slow rate, so the damage caused is large and the inertia is large. At this time, more protection modules need to be opened for protection; the targeted activation of the protection module reduces the difficulty and cost of subsequent maintenance.

[0045] In summary, this application includes at least one of the following beneficial technical effects:

[0046] 1. Automatically identify and determine whether there are any problems inside the bus, greatly reducing the probability of delayed discovery of problems due to driver restrictions, reducing the impact of problems, and greatly improving timeliness and bus safety.

[0047] 2. It enables buses to still be monitored for safety when they are on roads without signals, further improving the safety of buses and the reliability of the system.

[0048] 3. It enables protective measures to be implemented in advance, further improving the safety of buses. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a module diagram of an intelligent on-board security system for buses in an embodiment of the present application.

[0050] Figure 2 This is a working diagram of the seat detection module.

[0051] Figure 3 This is a working diagram of the position detection module and the height detection module.

[0052] Figure 4 This is a schematic diagram of the operation of a bus after it enters a road section without signals.

[0053] Explanation of the accompanying drawings: 1. Alarm module; 2. Seat detection module; 21. Cushion detection submodule; 22. Backrest front detection submodule; 23. Backrest back detection submodule; 3. Vehicle speed detection module; 4. Interference module; 5. Position detection module; 51. Height detection module; 6. Receiving module; 61. Sending module; 62. Alarm submodule; 63. Recording module; 64. Positioning submodule; 65. Timing submodule; 7. Acceleration detection module; 71. Protection module; 8. Pressure detection module; 81. Pressure time module. DETAILED DESCRIPTION

[0054] The following is combined with Figure 1-4 This application is described in further detail.

[0055] The embodiment of the present application discloses an intelligent onboard security system for buses. Figure 1 The intelligent on-board security system for buses includes a processor, a database, an alarm module 1, a seat detection module 2, a vehicle speed detection module 3, an interference module 4, a position detection module 5, a height detection module 51, a receiving module 6, a sending module 61, an alarm submodule 62, a recording module 63, an acceleration detection module 7, a protection module 71, a pressure detection module 8, and a pressure time module 81. The processor is used to process data. The processor receives signals and outputs processed corresponding situation signals. In this embodiment, the processor can be an MCU, a CPU, or a terminal device composed of an MCU and a CPU. The database is used to store threshold data. The stored data includes threshold data and signal data that are pre-entered and set for comparison with signal data. The processor is located on the bus, and the processor also includes a signal module for remotely sending and receiving signals.

[0056] Reference Figure 1 and Figure 2 The seat detection module 2 includes a cushion detection submodule 21, a front-side backrest detection submodule 22, and a back-side backrest detection submodule 23. The seat detection module 2 is located on the seat and is used to detect the force applied by the driver or passenger to the seat and output corresponding seat pressure signals to facilitate the processor's calculation of the driver or passenger's position on the seat. The seat pressure signals include cushion pressure signals, front-side pressure signals, and back-side pressure signals. The cushion detection submodule 21 is located on the seat cushion and primarily detects the weight of the passenger or driver and outputs corresponding cushion pressure signals to the processor. The front-side backrest detection submodule 22 is located on the side of the seat back facing the corresponding passenger or driver. It primarily detects the force applied by the passenger or driver on the seat back and outputs corresponding front-side pressure signals to the processor. The back-side backrest detection submodule 23 is located on the side of the seat back facing away from the side where the front-side backrest detection submodule 22 is installed. It primarily detects pressure on the back of the seat back and outputs corresponding back-side pressure signals to the processor.

[0057] The database stores seat cushion pressure interval threshold data corresponding to the seat cushion pressure signal, front surface pressure interval threshold data corresponding to the front surface pressure signal, and back surface pressure interval threshold data corresponding to the back surface pressure signal.

[0058] Reference Figure 1 and Figure 2 The alarm module 1 is used to be placed in a police station or a transfer station. After sending an alarm signal, it will alert the police station or prompt the staff of the transfer station to alert. The receiving end of the alarm module 1 is used to receive the situation signal output by the processor.

[0059] Reference Figure 1 and Figure 2When the driver or passenger is tied to the seat, the driver or passenger will exert pressure on the seat cushion and the front of the backrest during the struggle. The seat cushion detection submodule 21 and the backrest front detection submodule 22 detect the pressure changes and output the seat cushion pressure signal and the front pressure signal to the processor. When the rope ties the driver or passenger to the backrest, it will exert pressure on the back of the backrest. At this time, the backrest back detection submodule 23 detects the local pressure change generated by the rope and outputs the back pressure signal to the processor. After receiving the seat cushion pressure signal, the front pressure signal and the back pressure signal, the processor reads the seat cushion pressure interval in the call database. Threshold data, front pressure interval threshold data and back pressure interval threshold data are compared. If the data of the seat cushion pressure signal falls within the interval range indicated by the seat cushion pressure interval threshold data, or the data of the front pressure signal falls within the interval range indicated by the front pressure interval threshold data, or the data of the back pressure signal falls within the interval range indicated by the back pressure interval threshold data, it means that the driver or passenger may have an accident. At this time, the processor outputs a corresponding situation signal to the alarm module 1, and the alarm module 1 reminds the staff. At this time, the staff can judge whether the bus has an accident by checking other data.

[0060] Reference Figure 1 and Figure 2 The speed detection module 3 is used to detect the bus's speed and output a corresponding bus speed signal to the processor. The database stores speed interval threshold data. The processor determines whether an abnormality in the seat cushion pressure signal, the front pressure signal, and the back pressure signal indicates an abnormality in the bus speed signal's speed data. Specifically, the processor reads and compares the speed interval threshold data in the database with the speed data in the bus speed signal. If the speed data in the bus speed signal falls within the range indicated by the abnormality threshold data, the bus's driving state is abnormal, further improving the reliability of the bus abnormality determination.

[0061] Reference Figure 1 and Figure 2 The jamming module 4 is placed inside the bus to receive the situation signal. The jamming module 4 includes a sprayer and a high-intensity light. Once the staff confirms that the bus is in an abnormal situation, they can control the processor to send the corresponding situation signal to the jamming module 4. After receiving the corresponding situation signal, the jamming module 4 controls the sprayer to spray and the high-intensity light to light up to interfere with the criminals.

[0062] Reference Figure 1 and Figure 3The position detection module 5 is located inside the bus and is used to detect the position of people in the bus and output corresponding coordinate signals to the processor. The height detection module 51 is located inside the bus and is used to detect the height of people in the bus and output corresponding height signals to the processor. In this embodiment, the position detection module 5 can use an image recognition sensor or a heat sensor to detect the position of the person, and the height detection module 51 can use an infrared sensor. For example, the height detection module 51 can be placed at the height of the top of the seat back to detect whether there is any obstruction at this height to detect the height of the person.

[0063] The database stores coordinate threshold data corresponding to the coordinate data in the coordinate signal and height threshold data corresponding to the height data in the height signal.

[0064] Reference Figure 1 and Figure 3 When a passenger is forced to leave their seat and squat on the ground with their head in their hands, the processor reads and calls the coordinate threshold data in the database to compare and judge with the coordinate data in the received coordinate signal. At this time, the coordinate data in the coordinate signal will fall within the range of the bus aisle indicated by the coordinate threshold data, and the processor determines that the passengers are concentrated in the bus aisle. The processor reads and calls the height threshold data in the database to compare and judge with the height data in the received height signal. At this time, the height data in the height signal is less than the height threshold data, and the processor determines that the passenger is squatting on the ground. At this time, it is determined that an abnormal situation has occurred in the bus, and the processor outputs a corresponding situation signal.

[0065] Reference Figure 1 and Figure 4 The receiving module 6 is located at the transfer station and is used to receive the driving signal and output the feedback signal. The sending module 61 is located on the bus and outputs the driving signal and receives the feedback signal. The receiving module 6 and the sending module 61 form the transmission and reception of the feedback signal and the driving signal. The receiving module 6 includes an alarm submodule 62, which is used to receive the driving signal. If the alarm submodule 62 does not receive the driving signal, it means that the signal connection between the sending module 61 and the alarm submodule 62 is disconnected, that is, the connection is lost. The alarm submodule 62 will output an alarm signal indicating the loss of connection to alert the staff.

[0066] Reference Figure 1 and Figure 4The alarm submodule 62 includes a positioning submodule 64 and a timing submodule 65. The positioning submodule 64 is located on the bus and is used to output a positioning signal indicating the bus's location. The timing submodule 65 is located at the transfer station and receives the positioning signal from the processor. In this embodiment, the positioning submodule 64 can be a GPS positioning module to determine the bus's location and output a corresponding positioning signal to the timing submodule 65.

[0067] Reference Figure 1 and Figure 4 The timing submodule 65 is used to time and output a timing signal representing the timing data to the processor. The database stores the position data corresponding to the positioning data in the positioning signal and the passing time data corresponding to the position data. The timing submodule 65 is triggered and starts timing after the positioning signal is not received. After the positioning signal is received, the timing is stopped and the timing data is reset to wait for the next trigger. After the processor does not receive the positioning signal, it will read and call the position data corresponding to the positioning data in the last positioning signal received in the processor, and then compare the timing data in the received timing signal with the passing time data corresponding to the position data. If the timing data is greater than the passing time data, it is determined that the bus has an accident on the lost section of road. At this time, the processor outputs a corresponding response signal to the alarm module 1 to alarm.

[0068] Reference Figure 1 and Figure 4 The recording module 63 is located on the bus. The recording module 63 includes a recording database for storing bus speed signal data and is used to receive feedback signals and bus speed signals. When no feedback signal is received, it means that the signal between the receiving module 6 and the recording module 63 is disconnected. At this time, the recording module 63 receives the bus speed signal from the speed detection module 3 and records it in the recording database.

[0069] Reference Figure 1 and Figure 4For example, when a bus enters a signal-free section, the receiving module 6 and the timing sub-module 65 will have difficulty receiving the travel signal output by the transmitting module 61, and the timing sub-module 65 will also have difficulty receiving the positioning signal. At this time, the timing sub-module 65 determines the bus's current location data based on the positioning signal output by the most recent positioning sub-module 64 and reads the transit time data corresponding to the location data. This transit time data represents the normal elapsed time for the bus to pass through the corresponding signal-free section. The transit time data also includes a margin time, which is adjusted during congested periods. If the bus does not exit the signal-free section within the specified time, it indicates that an abnormality has occurred in the signal-free section, such as an accident or a bus hijacking.

[0070] Reference Figure 1 and Figure 4 If the timer time is less than the time corresponding to the passing time data when the receiving module 6 receives the driving signal output by the sending module 61 again, the timer time is reset and the recording module 63 stops recording the bus speed signal.

[0071] Reference Figure 1 The acceleration detection module 7 is located on the bus and is used to receive the bus speed signal, calculate the acceleration based on the driving speed data in the bus speed signal, and output the corresponding acceleration signal to the processor. A database stores acceleration threshold data. The processor reads and calls the acceleration threshold data in the database and compares it with the acceleration data in the received acceleration signal. If the acceleration data exceeds the acceleration threshold data, the processor determines that the bus's driving state is abnormal and outputs a corresponding situation signal. The protection module 71 is located inside the bus. The protection module 71 is located in the seat backrest, handrail, and steering wheel. It is used to deploy airbags to provide multi-faceted protection for the driver and passengers. It receives situation signals and, if it receives a situation signal indicating that the bus's driving state is abnormal, it will actively deploy the airbags.

[0072] Reference Figure 1 When an emergency occurs on a bus, resulting in excessive acceleration, such as abnormal acceleration due to a collision at the rear of the bus or abnormal deceleration due to a collision at the front side of the bus, the acceleration detection module 7 outputs a corresponding acceleration signal to the processor. The processor compares the acceleration signal data with the acceleration threshold data in the database. If the acceleration signal data is greater than the acceleration threshold data, the protection module 71 pops out the airbag to protect the driver and passengers.

[0073] Reference Figure 1The pressure detection module 8 is located inside the outer shell of the bus and is used to detect the pressure applied to the bus shell and output a force signal corresponding to the pressure applied to the processor. The pressure time module 81 is located on the bus and is used to detect the time the bus is subjected to pressure and output a corresponding pressure time signal to the processor. In this embodiment, the pressure detection module 8 can be a pressure sensor. The database stores impact threshold data. The processor calculates the force data in the received force signal and the pressure time data in the received pressure time signal to obtain the impact force data applied to the bus. The processor can use the calculated impact force data to estimate the damage that the bus will suffer. The processor then reads and calls the impact threshold data in the output library and compares it with the calculated impact force data. If the impact force data is greater than the impact threshold data, the processor will determine that the damage caused to the bus by this impact will cause harm to the passengers or driver in the bus, and thus outputs a corresponding situation signal to the protection module 71 at the corresponding position to deploy the airbag.

[0074] The implementation principle of an intelligent on-board security system for buses in an embodiment of the present application is as follows: if the driver is under control, the seat detection module 2 detects the abnormal pressure when the driver struggles, and detects the pressure of binding objects such as ropes that bind the driver to the seat. The seat detection module 2 will output the corresponding seat pressure signal to the processor. At the same time, the vehicle speed detection module 3 will output the bus speed signal corresponding to the detected abnormal vehicle speed change to the processor. After judgment, the processor outputs the corresponding situation signal to the alarm module 1. The alarm module 1 outputs the alarm signal to alarm or remind the staff of the transfer station. After confirmation, the staff can assist in the rescue through the interference module 4.

[0075] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An intelligent onboard security system for buses, characterized in that: include: A processor, configured to receive and process signals, and then output corresponding situation signals; A database for storing threshold data; An alarm module (1) is used to generate an alarm, and after receiving a signal indicating an unexpected situation of the driver or passenger, outputs a corresponding alarm signal to generate an alarm; A seat detection module (2) is used to detect the pressure on the seat and output a corresponding seat pressure signal to the processor, wherein the database stores pressure interval threshold data, and the processor compares the pressure data in the received pressure signal with the pressure interval threshold data read from the database to determine whether an accident occurs to the driver or the passenger; The vehicle speed detection module (3) is used to detect the driving speed of the bus and output a corresponding bus speed signal to the processor. The database stores speed interval threshold data. The processor compares the driving speed data in the received bus speed signal with the speed interval threshold data read from the database to determine whether the driving state of the bus is abnormal. The interference module (4) is used for spraying and lighting a light, and performs spraying and lighting a light after receiving a signal output by the processor indicating that an unexpected situation has occurred to a passenger or a driver.

2. The intelligent onboard security system for buses according to claim 1, characterized in that: The seat detection module (2) comprises: A seat cushion detection submodule (21) is used to detect seat cushion pressure and output a corresponding seat cushion pressure signal to the processor, wherein the database stores seat cushion pressure interval threshold data, and the processor compares the seat cushion pressure data in the received seat cushion pressure signal with the seat cushion pressure interval threshold data read from the database to determine whether an accident occurs to the driver or the passenger; A backrest front detection submodule (22) is used to detect the front pressure of the seat back and output a corresponding front pressure signal to the processor, wherein the database stores front pressure interval threshold data, and the processor compares the front pressure data in the received front pressure signal with the front pressure interval threshold data read from the database to determine whether an accident occurs to the driver or the passenger; The backrest reverse detection submodule (23) is used to detect the backrest pressure of the seat back and output a corresponding backrest pressure signal to the processor, the database stores backrest pressure interval threshold data, and the processor compares the backrest pressure data in the received backrest pressure signal with the backrest pressure interval threshold data read from the database to determine whether an accident occurs to the driver or passenger.

3. The intelligent onboard security system for buses according to claim 1, characterized in that: include: A position detection module (5) is used to detect the position of a person in the carriage and output a corresponding coordinate signal to the processor. The database stores coordinate threshold data. The processor compares the coordinate data in the received coordinate signal with the coordinate threshold data read from the database to determine whether the passenger's position is abnormal. A height detection module (51) is used to detect the height of a person in the carriage and output a corresponding height signal to the processor. The database stores height threshold data. The processor compares the height data in the received height signal with the height threshold data read from the database to determine whether the height of the passenger is abnormal. If the processor determines that both the position and height of the passenger are abnormal, it outputs a signal indicating that the passenger has encountered an unexpected situation to the alarm module (1).

4. The intelligent onboard security system for buses according to claim 1, characterized in that: include: The recording module (63) receives the feedback signal and the bus speed signal, and when no feedback signal is received, receives and records the bus speed signal from the vehicle speed detection module (3).

5. The intelligent onboard security system for buses according to claim 1, characterized in that: include: An acceleration detection module (7) receives a bus speed signal and calculates acceleration, and outputs a corresponding acceleration signal to the processor. Acceleration threshold data is stored in the database. The processor compares the acceleration data in the received acceleration signal with the acceleration threshold data read from the database to determine whether the bus's driving state is abnormal. The protection module (71) is used to deploy an airbag to protect the driver and the passenger, and receives a situation signal. If the protection module (71) receives a situation signal indicating that the passenger is abnormal, the airbag is deployed.

6. The intelligent onboard security system for buses according to claim 5, characterized in that: include: A pressure detection module (8) is used to detect the pressure on the bus shell and output a force signal to the processor; A pressure time module (81) is used to detect the time when the bus is subjected to pressure and output a pressure time signal to the processor; Impact threshold data is stored in the database. The processor calculates the force data in the received force signal and the pressure time data in the received pressure time signal to obtain the impact force data received by the bus, and then compares the calculated impact force data with the impact threshold data read from the database to estimate the damage to the bus. If it is estimated that the damage to the bus will cause injuries to passengers or the driver, the processor outputs a corresponding situation signal to enable the protection module (71) at the corresponding position to operate.

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