TWM647432U - System for detecting position of seatbelt buckle - Google Patents

Abstract

A seat belt buckle position detection system, which uses a magnetic field detection unit provided on a seat belt fastening device to detect whether a magnetic object provided on a seat belt buckle is close enough to generate a corresponding switching signal to wireless communication unit, the wireless communication unit generates a corresponding confirmation signal to the control device through wireless communication according to the switching signal, so that the control device can judge whether the seat belt buckle has been buckled with the seat belt fixing device based on the confirmation signal and judge according to the As a result, the notification device is driven to send corresponding notification information.

Description

Seat belt buckle position detection system

The present invention relates to a vehicle driving safety assistance system, in particular to a safety belt buckle position detection system.

Vehicle occupants who do not wear seat belts often suffer serious casualties due to collisions, flying out of the vehicle and other factors. On the other hand, if a vehicle can be used with the seat belt fastened, then in the event of a collision, the pull of the seat belt will prevent the human body from hitting the windshield and other objects, thereby causing serious damage to the passengers on the vehicle. personnel provide better protection. Therefore, for the safety of the passengers on the vehicle, it is very important to fasten the seat belt when driving the vehicle.

There are currently vehicles on the market that require fastening of seat belts before driving. However, when this type of vehicle uses the driving computer to determine whether the seat belt buckle at one end of the seat belt is inserted into the seat belt fastening device, a circuit is installed on the seat belt fastening device to detect the seat belt buckle. Whether it has been inserted into the seat belt fastening device, and then use the general purpose input/output (GPIO) terminal of the trip computer to communicate with the circuit on the seat belt fastening device to confirm whether the seat belt buckle has been inserted. into the seat belt anchorage. Although this method is feasible, it requires additional wiring in the vehicle to connect the universal input and output terminals of the trip computer and the circuit on the seat belt fixing device. For vehicles that do not originally have related functions, additional wiring needs to be processed. Line arrangement problem.

In view of this, one purpose of the present invention is to provide a seat belt buckle position detection system, so that vehicles using the new technology can obtain the ability to detect whether the seat belt is fastened without the need for new wiring.

From one perspective, the present invention provides a seat belt buckle position detection system, which is suitable for detecting whether the seat belt in the vehicle is fastened to the seat belt fixing device via the seat belt buckle. The seat belt buckle position detection system includes a magnetic object, a magnetic field detection unit, a first wireless communication unit and a control device. The aforementioned magnetic object is set on the seat belt buckle and is suitable for generating a magnetic field; the magnetic field detection unit is set on the seat belt fixing device, and when the seat belt buckle is fastened on the seat belt fixing device, the aforementioned The magnetic object is close enough to the magnetic field detection unit so that the magnetic field detection unit can detect the magnetic field generated by the magnetic object and generate a corresponding switching signal accordingly; the first wireless communication unit is electrically coupled to the aforementioned magnetic field detection unit The unit is to receive the switching signal and send a confirmation signal according to the switching signal; the control device has a second wireless communication unit to receive the aforementioned confirmation signal through the second wireless communication unit, and the control device determines whether the seat belt passes according to the received confirmation signal. The seat belt buckle is fastened to the seat belt fixing device and reacts according to the judgment result.

In one embodiment, both the first wireless communication unit and the second wireless communication unit use the Bluetooth communication protocol.

In one embodiment, the seat belt buckle position detection system further includes a power supply device electrically coupled to the first wireless communication unit to supply power required for operation of the first wireless communication unit.

In one embodiment, the aforementioned power supply device is provided on the aforementioned seat belt fixing device.

In one embodiment, the aforementioned seat belt buckle position detection system further includes a notification device electrically coupled to the aforementioned control device to receive a notification signal sent by the control device based on the judgment result, and the notification device The notification device further sends corresponding notification information according to the received notification signal.

By using the above technology, the seat belt buckle position detection system provided by this new model can enable the vehicle to detect whether the seat belt is fastened without the need for new wiring between the control device and the seat belt fixing device. ability. Since the technology used in this new model is simple and easy to implement, it can be applied to various vehicles that need to add such capabilities.

In order to make the description clearly understood by those skilled in the art, it should be reminded that the term "electrical coupling" used below means that an electronic signal can be transmitted between two objects that are electrically coupled. Make a transfer. Unless otherwise limited, the method of transmitting electronic signals may be wired or wireless, and the direction of transmitting electronic signals may be one-way or two-way.

Please refer to Figure 1. The technology provided by the present invention is focused on detecting whether the seat belt buckle 100 as shown in the figure is properly inserted into the seat belt fastening device 110 so that the seat belt 130 can pass through the seat belt buckle 100. And fastened together with the seat belt fixing device 110 .

Please refer to FIG. 2 , which is a system block diagram of a seat belt buckle position detection system according to an embodiment of the present invention. As shown in the figure, the seat belt buckle position detection system 20 in this embodiment mainly includes a magnetic object 205 provided on the seat belt buckle 200, a magnetic field detection unit 212 provided on the seat belt fixing device 210 and The wireless communication unit 214, and the control device 220 responsible for determining whether the position of the seat belt buckle 200 meets the requirements. In the seat belt buckle 200, the magnetic object 205 can be any object capable of generating a magnetic field, such as a general permanent magnet. In order to be able to judge the position of the seat belt buckle 200 well, a better way is to prevent the magnetic field generated by the magnetic object 205 from being detected by the magnetic field when the seat belt buckle 200 has not been inserted into the seat belt fixing device 210. The unit 212 detects; on the other hand, when the seat belt buckle 200 is inserted and fastened to the seat belt fixing device 210, the distance between the magnetic object 205 and the magnetic field detection unit 212 must be close enough to The magnetic field detection unit 212 is enabled to detect the magnetic field generated from the magnetic object 205 .

In the seat belt fastening device 210 , the magnetic field detection unit 212 is configured to be electrically coupled to the wireless communication unit 214 . As shown in the figure, when detecting the magnetic field generated from the magnetic object 205, the magnetic field detection unit 212 will correspondingly generate a switching signal T1 to indicate that the magnetic field has been detected, and further transmit the switching signal T1 to the wireless communication unit 214. After receiving the switching signal T1, the wireless communication unit 214 will generate a corresponding confirmation signal M1 according to the received switching signal T1, and transmit the confirmation signal M1 outward through wireless transmission. The wireless communication unit 225 in the control device 220 adopts the same communication protocol as the wireless communication unit 214 , such as the Bluetooth communication protocol, so as to be suitable for receiving the confirmation signal M1 generated by the wireless communication unit 214 . The confirmation signal M1 received by the wireless communication unit 225 will be transmitted to the control device 220, and the control device 220 will determine whether the seat belt is fastened to the seat belt fastening device through the seat belt buckle 200 based on the received confirmation signal M1. 210, and react according to the result of the judgment.

In different application environments, the response generated by the control device 220 after making a judgment based on the confirmation signal M1 may also be different. For example, when the control device 220 is the central control computer of the vehicle, the control device 220 may only allow the vehicle to move when the seat belt buckle 200 has been fastened in the seat belt fixing device 210, and may not allow the vehicle to move at other times. Then the movement of the vehicle is prohibited; on the contrary, when the control device 220 is an additional expansion module, the control device 220 may only be used when the seat belt buckle 200 has not been fastened to the seat belt fixing device 210 A limited warning is provided at the appropriate time, such as a warning light or a warning sound, and the warning is stopped after the seat belt buckle 200 has been fastened in the seat belt fixing device 210 .

Please refer to FIG. 3 , which is a system block diagram of a seat belt buckle position detection system according to another embodiment of the present invention. In this embodiment, the seat belt buckle position detection system 30 includes a magnetic object 305 provided on the seat belt buckle 300, a magnetic field detection unit 312 provided on the seat belt fixing device 310, a wireless communication unit 314 and The power supply device 316, the control device 320 responsible for determining whether the position of the seat belt buckle 300 meets the requirements, and the notification device that can provide auditory or visually identifiable information.

Similar to the embodiment shown in FIG. 2 , the magnetic object 305 can be any object capable of generating a magnetic field. In order to be able to well determine the position of the seat belt buckle 300, that is, to determine whether the seat belt buckle 300 has been inserted into the seat belt fixing device 310, a better way is to make the magnetic field detection unit 312 only when the seat belt is fastened. The magnetic field generated by the magnetic object 305 can only be detected when the buckle 300 is completely inserted into the seat belt fastening device 310 .

In the embodiment shown in FIG. 3 , the electrical coupling and operating relationship between the magnetic field detection unit 312 and the wireless communication unit 314 provided on the seat belt fastening device 310 are similar to the embodiment shown in FIG. 2 . The explanation will not be repeated here. In addition to the magnetic field detection unit 312 and the wireless communication unit 314, a power supply device 316 is also provided on the seat belt fastening device 310. In this embodiment, the power supply device 316 is electrically coupled to the wireless communication unit 314 to thereby supply power required for operation of the wireless communication unit 314. It should be noted here that although the wireless communication unit can be designed to operate in a manner that generates electricity in response to changes in the magnetic field caused by the movement of magnetic objects (for example, the wireless communication unit 214 can be regarded as a product designed in this way), but This method can obtain less power and may not be able to support the wireless communication unit for longer-distance wireless signal transmission. Therefore, in this embodiment, the power supply device 316 is used to supply the power required for the operation of the wireless communication unit 314. , in order to obtain a longer wireless signal transmission distance. Under normal circumstances, when the wireless communication unit 314 is constructed with a Bluetooth communication module, a small button battery may be able to maintain its operation for several years. Therefore, in order to implement the present invention, it is necessary to The extra power spent on wireless communication is very small.

Please refer to Figure 3 again. The wireless communication unit 325 in the embodiment shown in FIG. 3 is also used to receive the confirmation signal generated by the wireless communication unit 314, and is also used to transfer the received confirmation signal to the control device 320. Next, the control device 320 determines whether the seat belt is fastened in the seat belt fixing device 310 through the seat belt buckle 300 based on the received confirmation signal, and sends out a notification signal S1 based on the determination result. Further, as shown in FIG. 3 , the notification device 330 in the seat belt buckle position detection system 30 is electrically coupled to the control device 320 to receive the notification signal S1 sent by the control device 320 . After receiving the notification signal S1, the notification device 330 can send corresponding notification information according to the requirements of the notification signal S1. Here, the notification device 330 can be various audio-visual or lighting facilities fixed on the vehicle, or it can be a mobile device such as a smart phone or a smart watch that is suitable for being carried everywhere, and the notification device 330 is sending out When the signal S1 is notified, a suitable communication interface can be adopted accordingly.

In summary, the seat belt buckle position detection system provided by this new model can enable the vehicle to detect whether the seat belt is fastened without the need for new wiring between the control device and the seat belt fixing device. ability. In addition, experiments have proven that the additional power consumption required for wireless communication is extremely low. Therefore, the technology adopted in this new model is simple and easy to implement and can be applied to various vehicles that need to add such capabilities.

20, 30: Seat belt buckle position detection system 100, 200, 300: seat belt buckle 110, 210, 310: Seat belt fixing device 130:Safety belt 205, 305: Magnetic objects 212, 312: Magnetic field detection unit 214, 225, 314, 325: Wireless communication unit 220, 320: Control device 316:Power supply device 330: Notification device M1: confirmation signal S1: notification signal T1: switching signal

Figure 1 is a schematic diagram of the use of the seat belt buckle and seat belt fixation device. Figure 2 is a system block diagram of a seat belt buckle position detection system according to an embodiment of the present invention. Figure 3 is a system block diagram of a seat belt buckle position detection system according to another embodiment of the present invention.

30: Seat belt buckle position detection system

300:Safety belt buckle

305:Magnetic objects

310:Safety belt fixation device

312: Magnetic field detection unit

314, 325: Wireless communication unit

316:Power supply device

320:Control device

330: Notification device

S1: notification signal

T1: switching signal

Claims (5)

A seat belt buckle position detection system, suitable for detecting whether a seat belt in a vehicle is fastened to a seat belt fixing device through a seat belt buckle, which is characterized by including: A magnetic object is placed on the seat belt buckle and generates a magnetic field; A magnetic field detection unit is provided on the seat belt fastening device, and the magnetic object is close enough to the magnetic field detection unit to enable the magnetic field detection when the seat belt buckle is fastened on the seat belt fastening device. The detection unit can detect the magnetic field generated by the magnetic object and generate a corresponding switching signal; a first wireless communication unit electrically coupled to the magnetic field detection unit to receive the switching signal and send a confirmation signal according to the switching signal; and A control device has a second wireless communication unit to receive the confirmation signal through the second wireless communication unit. The control device determines whether the safety belt is fastened to the safety belt through the safety belt buckle based on the confirmation signal. with a fixed device and respond based on the judged results. The seat belt buckle position detection system as claimed in claim 1, wherein both the first wireless communication unit and the second wireless communication unit use Bluetooth communication protocol. The seat belt buckle position detection system according to claim 1 further includes: a power supply device electrically coupled to the first wireless communication unit to supply power required for operation of the first wireless communication unit. The seat belt buckle position detection system as claimed in claim 3, wherein the power supply device is provided on the seat belt fixing device. The seat belt buckle position detection system according to claim 1 further includes a notification device electrically coupled to the control device to receive a notification signal sent by the control device according to the judgment result, and The notification device further sends corresponding notification information according to the notification signal.

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