Passenger safety belt unfastening alarm device and passenger car

Abstract

The utility model relates to a passenger safety belt unfastening alarm device and a passenger car. The passenger safety belt unfastening alarm device comprises safety belt switches arranged corresponding to seats and used for detecting whether safety belts are fastened or not, and sitting sensors used for detecting whether people sit on the corresponding seats or not. The safety belt controller is arranged corresponding to each seat and connected with a safety belt switch and a sitting person sensor of the seat, the safety belt controller is further connected with an interface of the safety belt CAN box, and the safety belt controller outputs an abnormal state to a corresponding interface of the safety belt CAN box when detecting that a person sits on the corresponding seat and does not fasten the safety belt; and the safety belt CAN box is used for generating a CAN message reflecting that the safety belt is not fastened on the corresponding seat according to the abnormal state of the corresponding interface and sending the CAN message to the display unit. The safety belt controllers are arranged on all the seats to judge the states of the seats, the state information of the safety belt controllers is sent to the safety belt CAN box, a single-chip microcomputer does not need to be arranged for an automobile, and the seats on which people sit but are not fastened can be positioned only by arranging the safety belt controllers.

Description

TECHNICAL FIELD

[0001] The utility model relates to a passenger safety belt unfastening alarm device and passenger car belong to the field of car safety. BACKGROUND

[0002] In the modern automobile industry, driving safety has always been the focus of manufacturers and consumers. With the continuous progress of vehicle technology, various active and passive safety systems are widely used in cars to reduce the risk of traffic accidents and protect the safety of passengers. Among them, the safety belt as one of the most basic passive safety devices, its correct use plays a crucial role in reducing collision damage.

[0003] However, although the importance of safety belts is widely recognized, in the actual driving process, some drivers and passengers still fail to fasten safety belts due to negligence or habit problems. In order to solve this problem, automobile manufacturers and research institutions continue to explore and develop new safety belt reminder systems to improve the use rate of safety belts and ensure the safety of passengers during driving.

[0004] The existing safety belt reminder system has:

[0005] 1) simple version safety belt alarm system:

[0006] As long as one seat belt lock tongue is not inserted into the lock catch of the whole car, whether there is a person on the seat or not, an alarm will be caused. The alarm logic of the simple version safety belt alarm system is very simple, whether there is a person on the seat or not, as long as the lock tongue is not inserted into the lock catch, the alarm will occur, which is not intelligent enough.

[0007] 2) standard version safety belt alarm system:

[0008] Through the pressure sensor to detect whether there is a person on the seat, when there is a person on the seat and the safety belt is not fastened, the alarm will occur. The standard version safety belt alarm system solves the problem of not being intelligent enough of the simple version safety belt alarm system, but the standard version safety belt alarm system cannot display the seat state of the passenger area of the whole car, and the driver cannot accurately and quickly know the specific position of the seat belt unfastening seat in the passenger area.

[0009] In order to be able to locate the seat of the person sitting but not wearing the safety belt, the Chinese invention patent application publication with the application publication number CN107813786 A discloses a passenger car seat safety belt non-wearing prompting system, which sets a pressure switch and a safety belt switch in series for each seat. The pressure switch is a normally open switch, which is closed when the seat is sat down by a person; the safety belt switch is a normally closed switch, which is opened when the safety belt buckle is on, and a single-chip microcomputer with the same number of interfaces as the number of seats is set in the safety belt comprehensive controller, the corresponding interfaces of the single-chip microcomputer are grounded through the pressure switch and the safety belt switch, and are used to locate the seat of the person sitting but not wearing the safety belt (i.e. the seat of the low-level signal) through different interfaces, generate a message of the position information, and transmit the message to the CAN bus, and the instrument reads and analyzes the corresponding message from the CAN bus, and displays the alarm layout to the instrument liquid crystal display screen in the form of the alarm layout, and the system wiring diagram is as shown in Figure 1

[0010] When the scheme is applied to a large passenger car, a single-chip microcomputer with 40 or even more number of interfaces needs to be equipped, and such single-chip microcomputers on the market are expensive. Utility model content

[0011] The utility model aims at providing a passenger safety belt non-wearing alarm device and a passenger car, so as to solve the problem of needing to equip a single-chip microcomputer with high price when the large passenger car is safely positioned.

[0012] In order to achieve the above-mentioned purpose, the scheme of the utility model comprises:

[0013] The technical scheme of the passenger safety belt non-wearing alarm device of the utility model comprises a safety belt switch set for detecting whether the safety belt is buckled for each seat, a person sitting sensor for detecting whether the corresponding seat is sat down, and a safety belt controller connected with the safety belt switch and the person sitting sensor of the seat for each seat, wherein the safety belt controller is further connected with the interface of the safety belt CAN box respectively, and the safety belt controller outputs an abnormal state to the corresponding interface of the safety belt CAN box when detecting that the corresponding seat is sat down by a person and the safety belt is not buckled; the safety belt CAN box is used to generate a CAN message reflecting that the corresponding seat is not buckled by the person sitting and send the CAN message to the display unit.

[0014] Further, the person sitting sensor is a safety belt SBR.

[0015] Further, the safety belt controller and the safety belt CAN box are powered by the vehicle body control module.

[0016] Further, the vehicle body control module is connected with the safety belt CAN box and the safety belt controller through the rocker switch for power supply.

[0017] ​The utility model discloses a passenger safety belt is not tied alarm passenger train technical scheme, including passenger safety belt is not tied alarm device, passenger safety belt is not tied alarm device includes:

[0018] The seat safety belt controller is connected with the seat safety belt switch and the seat sensor, and the seat safety belt controller is connected with the seat safety belt CAN box.

[0019] Further, the seat sensor is a safety belt SBR.

[0020] Further, the seat safety belt controller and the seat safety belt CAN box are connected with the vehicle body control module for power supply to supply power to the seat safety belt controller and the seat safety belt CAN box.

[0021] Further, the seat safety belt controller and the seat safety belt CAN box are connected with the vehicle body control module through the rocker switch for power supply.

[0022] The utility model discloses the beneficial effect is: setting seat safety belt controller on each seat judges the state of seat, and sends seat safety belt controller's state information to seat safety belt CAN box, and the abnormal information of seat safety belt CAN box is received to the symbol of corresponding seat of combination instrument and is lighted. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the wiring principle diagram of prior art;

[0024] Figure 2 It is the wiring diagram of the safety belt untied alarm device provided by the utility model;

[0025] Figure 3 It is the safety belt untied alarm logic flow chart provided by the utility model;

[0026] Figure 4 It is the display diagram of combination instrument. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantage of the utility model more clear and obvious, the utility model is clearly and completely detailed below in combination with the drawings and examples.

[0028] The utility model discloses a thought in at each seat is provided with the seat belt controller to judge the state of seat, and the state information of seat belt controller is sent to the seat belt CAN box, and the abnormal information point of the seat belt CAN box is lighted the symbol of corresponding seat by combination instrument receiving.

[0029] Device embodiment:

[0030] Safety belt switch, safety belt sensor and safety belt controller are arranged on each seat, each safety belt controller is connected to the safety belt CAN box, and the symbol of corresponding seat is lighted by combination instrument receiving the abnormal signal of safety belt CAN box. The safety belt CAN box has the same number of interfaces as the number of seats, and the interfaces correspond to the seats one by one. The combination instrument has a pre-set seat distribution diagram of the whole vehicle, when a seat is occupied but the safety belt is not buckled, the safety belt controller shows an abnormal state and sends it to the CAN box interface corresponding to the seat, the CAN box generates a message to the combination instrument, and when the combination instrument receives the abnormal information from the CAN box, the seat symbol corresponding to the interface is lighted, that is, the symbol corresponding to the seat is lighted in the seat distribution diagram of the whole vehicle.

[0031] As Figure 2 shown in a seat belt unfastening alarm device wiring diagram.

[0032] The seat is provided with a person sensor, a safety belt switch and a safety belt controller, and the safety belt switch and the person sensor are connected to the safety belt controller. The safety belt controller detects the person sensor and the safety belt switch, and gives an alarm when a seat is occupied but the safety belt is not buckled. All safety belt controllers are connected to the safety belt CAN box to receive signals from the safety belt controller. The safety belt CAN box is connected to the combination instrument through CANH and CANL for communication. The safety belt CAN box and the safety belt controller are powered by the vehicle body control module. To facilitate temporary cancellation of the safety belt alarm function, a rocker switch is connected to the power supply line from the vehicle body control module to the safety belt controller and the safety belt CAN box, so as to facilitate power supply and temporarily cancel the alarm function.

[0033] Specifically, in the embodiment, the person sensor is a safety belt SBR.

[0034] The safety belt SBR (seat belt reminder) is a membrane switch, and when a seat is not occupied, the resistance is greater than 10KΩ, and when a seat is occupied (>5KG), the resistance is less than 150Ω. The safety belt switch is a conventional contact switch, and is in an on state when the safety belt is not buckled, and is in an off state when the safety belt is buckled.

[0035] Case 1: a person buckles the safety belt, at this time the safety belt SBR resistance is less than 150Ω, but the safety belt switch is in an off state, there is no current in the loop, and the safety belt controller does not alarm.

[0036] Case 2: The passenger is seated but not wearing the seat belt. At this time, the seat belt SBR resistance < 150Ω, the seat belt switch is in the closed state, there is a large current in the loop, and the seat belt controller alarms.

[0037] Case 3: No passenger is seated. At this time, the seat belt SBR resistance > 10KΩ. If the seat belt is worn, the seat belt switch is closed, but because the resistance of the seat belt SBR is very large, the current in the loop is very small and can be ignored, and the seat belt controller does not alarm. If the seat belt is not worn, the seat belt switch is open, and there is no current in the loop, and the seat belt controller does not alarm. That is, when there is no passenger seated on the seat, whether the seat belt is worn or not, the seat belt controller does not alarm.

[0038] The seat belt not worn alarm device alarm logic is:

[0039] Figure 3 The seat belt not worn alarm device alarm logic is:

[0040] Step one, power-on self-test. After the seat belt system is powered on, it first performs self-test. If an abnormality is found after self-test, the indicator light flashes red, the buzzer alarms, and the CAN network sends an abnormal message. If there is no abnormality, proceed to step two.

[0041] Step two, detect whether there is a passenger seated on the seat through the seat belt SBR. If there is no passenger seated, end the process. If there is a passenger seated, proceed to step three.

[0042] Step three, detect the state of the seat belt buckle through the seat belt switch. Determine whether the seat belt of the passenger seated is worn by the state of the seat belt buckle. If the seat belt is worn, end the process. If the seat belt is not worn, the indicator light flashes yellow, the buzzer prompts the passenger to "please wear the seat belt", and the CAN network reports an abnormal state, prompting the instrument to light up the seat belt symbol.

[0043] Step four, the combination instrument lights up the seat belt not worn alarm symbol in the passenger area according to the seat belt not worn alarm information sent by the seat belt CAN box on the CAN network.

[0044] Take Figure 4 as an example to explain steps two, three, and four in detail.

[0045] Assume that the left 81 and right 32 seats are occupied but not wearing seat belts, the rear 1 and rear 5 seats are not occupied, and the other seats are occupied and wearing seat belts.

[0046] Step two, first, by seat belt SBR detection seat has no one sitting. Detecting that the seat is not 1 and 5, since the seat is not sitting, whether or not to wear a seat belt will not exist danger, that is, for the seat 1 and 5, even if not wearing a seat belt will not report an exception, so when the seat is not sitting, directly end the process; for the seat 1 and 5, that is, the seat of the person continues to step three, to determine whether the seat belt is fastened.

[0047] Step three, by seat belt switch to detect the state of the seat belt buckle. The seat belt switch will detect the state of the seat left 81 and right 32 seat belt buckle is not wearing a seat belt, at this time the indicator light flashes yellow, the buzzer voice prompt passengers "please fasten your seat belt", while the seat left 81 and right 32 seat belt controller reads the respective seat of the abnormal state information and upload to the seat belt CAN box, the seat belt CAN box through CANH and CANL remind instrument light corresponding to the seat symbol. For the seat of the person and fasten the seat belt (that is, in addition to left 81 and right 32 seat of the person), the state is safe, no exception state, directly end the process.

[0048] Step four, the seat belt CAN box through the CAN network (that is, CANH and CANL) to send the seat belt not wearing alarm information to the combination instrument, prompting the combination instrument to light the corresponding seat symbol, such as Figure 3 , the abnormal state of the seat is red. Through the combination instrument, the seat belt state of the passenger area can be visualized, which can accurately locate the abnormal seat and remind the driver of the abnormal state.

[0049] Bus embodiment:

[0050] A bus, in order to solve the problem of large bus safety positioning needs to be equipped with high-priced single-chip microcomputer, the embodiment provides a bus with a seat belt not wearing alarm device, the seat belt not wearing alarm device has been introduced in the device embodiment enough clear, here will not be too much repetition.

[0051] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these examples without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A passenger seat belt non-use alarm device characterized by comprising: The seat belt switch is arranged for detecting whether the seat belt is buckled, the occupant sensor is arranged for detecting whether the corresponding seat is occupied, and the seat belt controller is arranged for connecting the seat belt switch and the occupant sensor of the corresponding seat.

2. The passenger seat belt unbuckled alarm apparatus according to claim 1, characterized by, The occupant sensor is a seat belt SBR.

3. The passenger seat belt unbuckled alarm apparatus according to claim 1, characterized by, The seat belt controller and the seat belt CAN box are connected to the body control module for power supply.

4. The passenger seat belt unfastening alarm device according to claim 3, characterized by The seat belt CAN box and the seat belt controller are connected to the rocker switch of the body control module for power supply.

5. A passenger vehicle characterized by The passenger seat belt unfastening alarm device comprises: The seat belt switch is arranged for detecting whether the seat belt is buckled, the occupant sensor is arranged for detecting whether the corresponding seat is occupied, and the seat belt controller is arranged for connecting the seat belt switch and the occupant sensor of the corresponding seat.

6. The passenger car of claim 5, wherein, The occupant sensor is a seat belt SBR.

7. The passenger car of claim 5, wherein, The seat belt controller and the seat belt CAN box are connected to the body control module for power supply.

8. The passenger car of claim 7, wherein, The seat belt CAN box and the seat belt controller are connected to the rocker switch of the body control module for power supply.

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