阅读说明：本技术 一种基于物联网的安全带控制方法及装置 (Safety belt control method and device based on Internet of things ) 是由 厉东霖 于 2019-11-07 设计创作，主要内容包括：本发明公开了车辆工程领域的一种基于物联网的安全带控制方法及装置,以解决现有技术中对安全带系紧与否检测不严格的缺陷,安全带锁扣内置有锁紧装置、解锁装置和监测装置；所述监测装置包括横轴、第一扭簧、翘板、触碰感应器和连锁卡,所述横轴穿过翘板的横向中轴线处,且横轴与翘板之间缠绕第一扭簧,在第一扭簧缠绕状态下翘板的后端下压,所述触碰感应器位于翘板的前端,触碰感应器与连锁卡之间串联；任意座椅内带有控制节点和重力感应器,控制节点内置有感应器,任意控制节点之间并联,且控制节点采用物联网模块。技术方案在信号传输过程中还设置监测装置,通过外凸的弧形将翘板拨动从而实现正确使用安全带的监测模式,提升了报警的准确性。(The invention discloses a safety belt control method and a safety belt control device based on the Internet of things in the field of vehicle engineering, aiming at solving the defect that whether a safety belt is fastened or not is not strictly detected in the prior art, wherein a locking device, an unlocking device and a monitoring device are arranged in a safety belt lock catch; the monitoring device comprises a transverse shaft, a first torsion spring, a rocker, a touch sensor and an interlocking card, wherein the transverse shaft penetrates through the transverse central axis of the rocker, the first torsion spring is wound between the transverse shaft and the rocker, the rear end of the rocker is pressed down in the winding state of the first torsion spring, the touch sensor is positioned at the front end of the rocker, and the touch sensor is connected with the interlocking card in series; have control node and gravity inductor in arbitrary seat, the control node embeds has the inductor, connects in parallel between the arbitrary control node, and control node adopts thing networking module. The technical scheme still sets up monitoring devices at the signal transmission in-process, thereby stirs the monitoring mode that realizes correctly using the safety belt with the wane through the arc of evagination, has promoted the accuracy of reporting to the police.)

1. The utility model provides a safety belt controlling means based on thing networking, includes safety belt body, safety belt hasp and seat, its characterized in that: a locking device, an unlocking device and a monitoring device are arranged in the safety belt lock catch;

the monitoring device comprises a transverse shaft, a first torsion spring, a rocker, a touch sensor and an interlocking card, wherein the transverse shaft penetrates through the transverse central axis of the rocker, the first torsion spring is wound between the transverse shaft and the rocker, the rear end of the rocker is pressed down in the winding state of the first torsion spring, the touch sensor is positioned at the front end of the rocker, and the touch sensor is connected with the interlocking card in series;

have control node and gravity inductor in arbitrary seat, the control node embeds has the inductor, connects in parallel between the arbitrary control node, and control node adopts thing networking module.

2. The internet of things-based safety belt control device according to claim 1, wherein: the internet of things module adopts an ESP8266 module, the input end of the internet of things module is in contact with the gravity sensor, and the output end of the internet of things module is connected with the cloud server through WIFI.

3. The internet of things-based safety belt control device according to claim 2, wherein: the display unit is located on one side of the radial direction of an instrument panel of the cab, and the receiving end of the display unit is connected with the output end of the Internet of things module.

4. The internet of things-based safety belt control device according to claim 3, wherein: the alarm unit comprises a signal receiver, an LED lamp and a buzzer, the buzzer is tightly attached to the display unit and is connected with the signal receiver in series, the input end of the signal receiver is wirelessly connected with the cloud server, and the LED lamp is located beside the seat and the control end of the LED lamp is connected with the control node.

5. The internet of things-based safety belt control device according to claim 4, wherein: the interlocking card is electrically connected with the buzzer and the display unit.

6. The internet of things-based safety belt control device according to claim 5, wherein: the locking device comprises a spring bolt positioned on the safety belt and a sliding rail positioned inside the safety belt lock catch, the sliding rail radially penetrates through a pin shaft wound with a second torsion spring, one end of the second torsion spring is fixed inside the pin shaft, and one end of the second torsion spring is in contact with a limiting block.

7. The internet of things-based safety belt control device according to claim 6, wherein: the unlocking device comprises a lower pressing block which is in contact with the second torsion spring, and the lower pressing block is in clearance fit with the safety belt lock catch.

8. A safety belt control method based on the Internet of things is characterized in that: comprises the following steps

S1, turning on an ignition switch, and enabling a control node and a gravity sensor in the seat to enter a working state;

s2, when the gravity sensed by the gravity sensor is equal to 0, the control node does not work, and when the gravity sensed by the gravity sensor is greater than 0, the control node enters a pre-working state, wherein the time of the pre-working state is 50S-90S;

s3, after the time of the pre-working state is reached, the control node enters the working state, when the safety belt is detected not to be connected with the safety belt lock catch, the control node transmits signals to the display unit and the cloud end respectively, the buzzer starts to give an alarm after receiving the signals, and the display unit displays the position of the control node outputting data;

and S4, after the safety belt is connected with the safety belt lock catch, the control node respectively transmits the locking signal to the display unit and the cloud end, so that the alarm of the buzzer is relieved.

9. The internet of things-based safety belt control method according to claim 8, wherein: the step of S3 further includes a detection stage, where the detection stage includes the following steps:

a) when the safety belt and the human body are in an arc shape, the wane is pressed down to be in contact with the touch sensor, and at the moment, the interlocking card transmits a touch signal to the control node;

b) when the safety belt did not bypass human surface and inserts the safety belt hasp, the wane does not produce down to press down deformation by vertical power, and the control node is given alarm signal to the interlock card this moment, and control node transmits the signal respectively to display element and high in the clouds this moment, and buzzer received the signal and begins to report to the police this moment to display element shows output data's control node position.

Technical Field

The invention belongs to the field of vehicle engineering, and particularly relates to a safety belt control method and device based on the Internet of things.

Background

The traditional automobile safety belt control device adopts pressure Sensors (SBR) with different positions and quantities placed on a cushion of an automobile seat, and transmits a signal to an alarm device by sensing whether the seat bears gravity or not, so that a driver and an auxiliary driver and passengers are prompted to fasten safety belts.

However, many occupants are bored with such repeated reminders and alarms, and may resort to lazy practices to insert some false latches into the seat belt latch to prevent the seat belt warning device from continuing to alarm. However, this procedure is certainly associated with safety hazards, so that the original purpose of setting the safety belt warning device is not achieved.

For this reason, some improvements have been proposed in the prior art, such as CN109278702A, which proposes a vehicle speed control system based on a seat belt sensor and a control method thereof, wherein in addition to providing a buckle sensor on the buckle for sensing whether the buckle is actually inserted into the slot, a belt sensor is provided on a belt body of the seat belt, and the belt sensor detects whether the belt body is close to the human body.

However, the arrangement of the belt sensor does not prevent the driver from putting the seat belt on the back while inserting the seat belt buckle into the buckle. Another prior art CN106427883B, which can detect the length of the safety belt for anti-cheating, can consider that the safety belt has been pulled out by the correct length when the stretching length of the safety belt exceeds a threshold value to detect whether the safety belt is worn correctly. However, although this prior art technique is capable of measuring the length of the harness, the length of the harness that is pulled out when it is normally worn is dependent on a variety of factors including: the body type of the passenger, the front and back positions of the seat on the slide rail, the angle of the backrest and the like are related, but the prior art does not consider the actual factors, and the incorrect judgment is often obtained and a false alarm is often given.

Disclosure of Invention

In order to solve the above problems, it is an object of the present invention to provide a control device and method for accurately monitoring fastening of a seat belt.

In order to achieve the purpose, the technical scheme of the invention is as follows: a safety belt control device based on the Internet of things comprises a safety belt body, a safety belt lock catch and a seat, wherein a locking device, an unlocking device and a monitoring device are arranged in the safety belt lock catch;

the monitoring device comprises a transverse shaft, a first torsion spring, a rocker, a touch sensor and an interlocking card, wherein the transverse shaft penetrates through the transverse central axis of the rocker, the first torsion spring is wound between the transverse shaft and the rocker, the rear end of the rocker is pressed down in the winding state of the first torsion spring, the touch sensor is positioned at the front end of the rocker, and the touch sensor is connected with the interlocking card in series;

have control node and gravity inductor in arbitrary seat, the control node embeds has the inductor, connects in parallel between the arbitrary control node, and control node adopts thing networking module.

A safety belt control method based on the Internet of things comprises the following steps:

s1, turning on an ignition switch, and enabling a control node and a gravity sensor in the seat to enter a working state;

s2, when the gravity sensed by the gravity sensor is equal to 0, the control node does not work, and when the gravity sensed by the gravity sensor is greater than 0, the control node enters a pre-working state, wherein the time of the pre-working state is 50S-90S;

s3, after the time of the pre-working state is reached, the control node enters the working state, when the safety belt is detected not to be connected with the safety belt lock catch, the control node transmits signals to the display unit and the cloud end respectively, the buzzer starts to give an alarm after receiving the signals, and the display unit displays the position of the control node outputting data;

and S4, after the safety belt is connected with the safety belt lock catch, the control node respectively transmits the locking signal to the display unit and the cloud end, so that the alarm of the buzzer is relieved.

After the scheme is adopted, the following beneficial effects are realized: 1. compared with the technical scheme that whether the safety belt is locked or not is detected by the inductor in the prior art, the technical scheme utilizes the internet of things technology, the safety belt use information is backed up and fed back through the cloud, and the safety command and the layout of the control console are facilitated.

2. For the prior art who adopts the thing networking among the prior art, this technical scheme still sets up monitoring devices in signal transmission process, thereby avoid the passenger to fill in the card the safety belt hasp or the passenger inserts the condition of evading the monitoring around the back with the safety belt, because the safety belt produces the arc of evagination when hugging closely with the human body, this kind of arc is different with the arc (indent) that the passenger walked around the safety belt production, thereby stir the monitoring mode that realizes correctly using the safety belt with the wane through the arc of evagination, the accuracy of reporting to the police has been promoted.

3. Compared with other monitoring modes, the technical scheme reserves the reaction time of 50-90 s, avoids frequent alarm of the buzzer and improves the humanization of use.

Further, the internet of things module adopts an ESP8266 module, the input end of the internet of things module contacts with the gravity sensor, and the output end of the internet of things module is connected with the cloud server through WIFI.

Has the advantages that: and the ESP8266 Internet of things module serves as a basic control unit and a network node. The intelligent network system has the advantages of having a single chip microcomputer control function and a wifi networking function and being very suitable for achieving the creative idea of the internet of things. The Arduino open source development environment is supported, various third party development libraries are used for development in the aspect, and the efficiency and the success rate are greatly improved.

Further, the display unit and the alarm unit are further included, the display unit is located on one side in the radial direction of the instrument panel of the cab, and the receiving end of the display unit is connected with the output end of the Internet of things module.

Has the advantages that: the driver can observe and monitor conveniently, and the position of the passenger who is not fastened with the safety belt can be determined quickly.

Further, the alarm unit comprises a signal receiver, an LED lamp and a buzzer, the buzzer is tightly attached to the display unit and is connected with the signal receiver in series, the input end of the signal receiver is wirelessly connected with the cloud server, and the LED lamp is located beside the seat and the control end of the LED lamp is connected with the control node.

Has the advantages that: the control console can conveniently monitor and remind the potential safety hazard vehicles in real time, and the safety is enhanced.

Further, the interlocking card is electrically connected to the buzzer and the display unit.

Has the advantages that: and confirming alarm conditions and monitoring through a chain card.

Furthermore, locking device is including the spring bolt that is located the safety belt and being located the inside slide rail of safety belt hasp, and the slide rail radially passes the round pin axle that has the winding second torsional spring, and inside the one end of second torsional spring was fixed in the round pin axle, and the one end contact of second torsional spring has the stopper.

Has the advantages that: 1. the limiting block is installed on the pin shaft and is set to axially rotate relative to the pin shaft, and the upper surface of the limiting block is tightly attached to the inner surface of the base under the pressing action of the end head of the second torsion spring and used for inserting, locking and unlocking the locking plate.

2. The limiting block generates continuous and stable downward pressure through pre-twisting, and the locking effect is improved.

Further, the unlocking device comprises a lower pressing block which is in contact with the second torsion spring, and the lower pressing block is in clearance fit with the safety belt lock catch.

Has the advantages that: the lower pressing block is convenient to unlock after being pressed.

Further, the step of S3 includes a detection stage, where the detection stage includes the following steps:

a) when the safety belt and the human body are in an arc shape, the wane is pressed down to be in contact with the touch sensor, and at the moment, the interlocking card transmits a touch signal to the control node;

b) when the safety belt did not bypass human surface and inserts the safety belt hasp, the wane does not produce down to press down deformation by vertical power, and the control node is given alarm signal to the interlock card this moment, and the control node transmits the signal respectively to display element and high in the clouds, and buzzer received the signal and begins to report to the police this moment to display element shows output data's control node position.

The general technical principle is as follows: the device adopts a design method of a distributed control system based on the Internet of things. Based on an ESP8266 controller as a control node, all control units are independent and mutually connected, cooperate with each other and work independently. By adopting the design concept, the control, display and communication tasks are relatively complex, and are completed in a hierarchical and task-separated manner through a plurality of control modules which are mutually connected, so that the complexity of software and hardware of the system is simplified, and the difficulty in installation and wiring of the hardware is further simplified.

The overall effect after the scheme is adopted is as follows: 1. based on the Blynk cloud Internet of things technology, the hardware networking is more convenient and flexible.

2. The control system adopts a distributed structure design, the modules are mutually independent and mutually connected to work cooperatively, the reliability is good, and the integration is convenient.

3. The system adopts the technology of Internet of things, the hardware installation is flexible, the existing bus can be conveniently and quickly modified, and the original automobile electronic circuit does not need to be re-wired on a large scale.

4. The installation of the master control console is not limited by regions, and the master control console can be installed on a static or mobile platform only by connecting a network.

Drawings

FIG. 1 is a flow chart of an embodiment of the present invention;

FIG. 2 is a diagram of a seatbelt buckle configuration according to an embodiment of the present invention;

fig. 3 is a diagram of an information transmission path of the internet of things of fig. 1;

FIG. 4 is a diagram of a connection structure of the control node of FIG. 1;

fig. 5 is a connection structure diagram of the control unit and the display unit in fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a cross shaft 1, a first torsion spring 2, a rocker 3, a second torsion spring 4 and a limiting block 5.