Automatic alarm system of safety belt

Abstract

The invention provides a safety belt automatic alarm system, which comprises a first signal sending module, a first signal receiving module and a first safety belt, and is characterized in that the first signal sending module comprises a first signal sending power supply, a first signal sending device, a first limit switch and a first signal sending circuit; the first message receiving module comprises a first message receiving power supply, a first message receiving device, an alarm device and a first message receiving circuit. According to the safety belt automatic alarm system, when the buckle ring of the first safety belt is normally buckled, the buckled object presses and opens the first limiting switch, the first signal receiving device does not receive the first danger signal, and the alarm device does not work; when the buckle ring of the first safety belt is not buckled, the first limiting switch is closed, the first signal receiving device controls the alarm device to be powered on and started, an operator and / or a guardian are / is reminded to warn that the safety belt is not buckled, safety accidents caused by illegal use of the safety belt are avoided, and the safety of the operator during high-place operation is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of production safety equipment, and in particular to an automatic seat belt warning system. Background Art

[0002] Safety protection is required when working at heights, and the correct use and wearing of safety belts is very important. However, in actual inspections of high-altitude operations, some operators of high-altitude operations were found to have violated regulations, causing the safety belts to lose their protective effect. Although guardians can be arranged to remind and supervise, guardians cannot keep their heads up and observe without stopping, and cannot continuously ensure the safety of operators. Summary of the invention

[0003] The main purpose of the present invention is to provide an automatic safety belt warning system to solve the problem in the related art that it is difficult to ensure the safety of operators working at heights only through supervision and reminders by guardians.

[0004] In order to achieve the above-mentioned purpose, the present invention provides an automatic seat belt alarm system, including a first sending module, a first receiving module and a first seat belt, the first sending module including a first sending power supply, a first sending device, a first limit switch and a first sending circuit, the first receiving module including a first receiving power supply, a first receiving device, an alarm device and a first receiving circuit, wherein: the first sending power supply is used to supply power to the first sending device through the first sending circuit and the first limit switch, the first seat belt is provided with the first sending module, the lever of the first limit switch is arranged toward the inner side of the buckle of the first seat belt, and the first limit switch is normally closed; the first receiving power supply is used to supply power to the first receiving device and the alarm device through the first receiving circuit, and the first sending device is used to send a first danger signal to the first receiving device; when the first receiving device receives the first danger signal, the first receiving device controls the alarm device to turn on.

[0005] Furthermore, it also includes a second safety belt and a second signaling module, the second signaling module includes a second signaling power supply, a second signaling device, a second limit switch and a second signaling circuit, the second signaling power supply is used to supply power to the second signaling device through the second signaling circuit and the second limit switch, the second signaling module is provided on the second safety belt, the lever of the second limit switch is arranged toward the inner side of the buckle of the second safety belt, and the second limit switch is normally closed; the first receiving device includes a receiving device body and an AND gate element, the receiving device body is connected to the alarm device through the AND gate element, and the second sending device is used to send a second danger signal to the receiving device body; when the receiving device body receives the first danger signal and the second danger signal, the receiving device body controls the alarm device to open through the AND gate element.

[0006] Furthermore, it also includes an anti-fall differential and a third signaling module, the third signaling module includes a third signaling power supply, a third signaling device, a third limit switch and a third signaling circuit, the third signaling power supply is used to supply power to the third signaling device through the third signaling circuit and the third limit switch, the anti-fall differential is provided with the third signaling module, the lever of the third limit switch is arranged toward the inner side of the buckle of the anti-fall differential, and the third limit switch is normally closed; the third signaling device is used to send a third danger signal to the receiving device body; when the receiving device body receives the first danger signal, the second danger signal and the third danger signal, the receiving device body controls the alarm device to open through the AND gate element.

[0007] Furthermore, the first signaling module also includes a first signaling switch arranged on the first signaling circuit; the second signaling module also includes a second signaling switch arranged on the second signaling circuit; and the third signaling module also includes a third signaling switch arranged on the third signaling circuit.

[0008] Furthermore, the first signal receiving module also includes a first signal receiving switch arranged on the first signal receiving circuit.

[0009] Furthermore, the first safety belt is provided with a first protective cover, and the first signal transmitting module is installed on the first protective cover; the second safety belt is provided with a second protective cover, and the second signal transmitting module is installed on the second protective cover; the anti-fall differential is provided with a third protective cover, and the third signal transmitting module is installed on the third protective cover.

[0010] Furthermore, a first roller is rotatably connected to the lever of the first limit switch; a second roller is rotatably connected to the lever of the second limit switch; and a third roller is rotatably connected to the lever of the third limit switch.

[0011] Furthermore, the first transmitting power source, the second transmitting power source and the third transmitting power source are all button batteries.

[0012] Furthermore, the first receiving power source is a rechargeable battery.

[0013] Furthermore, the warning device is a buzzer or a voice alarm.

[0014] In the automatic seat belt alarm system of the present invention, the first receiving power supply supplies power to the first receiving device and the alarm device through the first receiving circuit, and the first transmitting power supply supplies power to the first transmitting device through the first transmitting circuit and the first limit switch, and the lever of the first limit switch is arranged toward the inner side of the buckle of the first seat belt; when the buckle of the first seat belt is normally fastened, the fastened object (such as a hanging ring, a rope, etc.) will press and open the first limit switch, the first transmitting device will not be powered, the first receiving device will not receive the first danger signal, and the alarm device will not work. At this time, the operator is protected by the first seat belt; when the buckle of the first seat belt is not fastened properly, the first limit switch is in a normally closed state, the first transmitting device is powered and works to send the first danger signal to the first receiving device. After the first receiving device receives the first danger signal, the alarm device is controlled to be powered and turned on, thereby reminding the operator and / or guardian that they have not fastened the seat belt properly, avoiding safety accidents caused by illegal use of the seat belt, and ensuring the safety of the operator when working at height. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of a first safety belt in the present invention is shown;

[0017] Figure 2 A schematic diagram of a first limit switch in the present invention is shown;

[0018] Figure 3 A schematic circuit diagram of the first signaling module in the present invention is shown;

[0019] Figure 4 A schematic circuit diagram of the first signal receiving module in the present invention is shown;

[0020] Figure 5 The logic diagram of the AND gate element in the present invention is shown.

[0021] The above drawings include the following reference numerals:

[0022] 1. The first transmitting module; 11. The first transmitting power supply; 12. The first transmitting device; 13. The first limit switch; 131. The first roller; 14. The first transmitting circuit; 15. The first transmitting switch; 2. The first receiving module; 21. The first receiving power supply; 22. The first receiving device; 221. The receiving device body; 222. The AND gate element; 23. The alarm device; 24. The first receiving circuit; 25. The first receiving switch; 3. The first safety belt; 31. The first protective cover. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement of the components and steps, numerical expressions and numerical values ​​described in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and devices should be considered as part of the authorized specification.

[0026] The present invention provides an automatic seat belt warning system, comprising a first signal transmitting module 1, a first signal receiving module 2 and a first seat belt 3, wherein the first signal transmitting module 1 comprises a first signal transmitting power supply 11, a first signal transmitting device 12, a first limit switch 13 and a first signal transmitting circuit 14, and the first signal receiving module 2 comprises a first signal receiving power supply 21, a first signal receiving device 22, a warning device 23 and a first signal receiving circuit 24, wherein: the first signal transmitting power supply 11 is used to supply power to the first signal transmitting device 12 through the first signal transmitting circuit 14 and the first limit switch 13, and the first signal receiving device 22 is used to supply power to the first signal transmitting device 12 through the first signal transmitting circuit 14 and the first limit switch 13. The first signal transmitting module 1 is provided on the first safety belt 3, the lever of the first limit switch 13 is arranged toward the inner side of the buckle of the first safety belt 3, and the first limit switch 13 is normally closed; the first receiving power supply 21 is used to supply power to the first receiving device 22 and the alarm device 23 through the first receiving circuit 24, and the first signal transmitting device 12 is used to send a first danger signal to the first receiving device 22; when the first receiving device 22 receives the first danger signal, the first receiving device 22 controls the alarm device 23 to turn on.

[0027] Combination Figure 1 The end of the first safety belt 3 is shown, and the buckle is connected to the rope. During use, the buckle of the first safety belt 3 can be buckled on the hanging ring, rope or other fixed objects (such as the crossbeam of the ladder) as needed to prevent the operator from falling. Figures 2 to 4 As shown, the first limit switch 13 is normally closed. When the buckle of the first safety belt 3 is not fastened (i.e., the lever of the first limit switch 13 is not subjected to external force), the first limit switch 13 is closed and turned on, so that the first transmitting power supply 11 supplies power to the first transmitting device 12 through the first transmitting circuit 14, and the first transmitting device 12 sends a first danger signal to the first receiving device 22. The first receiving power supply 21 supplies power to the first receiving device 22 and the alarm device 23 through the first receiving circuit 24. After the first receiving device 22 receives the first danger signal, the alarm device 23 is controlled to The first signal receiving module 2 can be powered on (i.e., the alarm device 23 is turned on) and an alarm message (such as a signal that can serve as an alarm, such as sound, light, vibration, etc.); taking the buckle of the first safety belt 3 and the rope as an example, after the buckle of the first safety belt 3 is fastened, the rope is located inside the buckle and presses the lever of the first limit switch 13 (i.e., the lever of the first limit switch 13 receives the force of the rope), so that the first limit switch 13 is disconnected, the first signal transmitting device 12 is not powered on, and the first signal receiving device 22 does not receive the first danger signal, so the alarm device 23 is controlled not to be powered on and does not work (i.e., the alarm device 23 is turned off). The first signal receiving module 2 can be carried by the operator and / or the guardian as needed, or it can be fixedly installed in the corresponding position for the guardian to supervise and guide.

[0028] It should be noted that, the number of first signal transmitting modules 1 is not limited, and multiple ones can be provided. For example, the operator usually wears multiple safety belts or there are multiple buckles on the safety belts, and a first signal transmitting module 1 can be provided for each safety belt or each buckle; similarly, the number of first signal receiving modules 2 is not limited, for example, the operator and the guardian both carry the first signal receiving module 2; in addition, the first signal transmitting device 12 and the first signal receiving device 22 can realize signal transmission through network communication. In this way, when the operator is far away from the guardian, the first signal receiving module 2 carried by the guardian can still play an alarm role normally, and for the first signal receiving module 2 carried by the operator himself, the signal can be sent through wired methods such as data cables, and the specific selection can be made according to needs.

[0029] In the automatic seat belt warning system of the present invention, the first receiving power source 21 supplies power to the first receiving device 22 and the warning device 23 through the first receiving circuit 24, and the first transmitting power source 11 supplies power to the first transmitting device 12 through the first transmitting circuit 14 and the first limit switch 13, and the lever of the first limit switch 13 is arranged toward the inner side of the buckle of the first seat belt 3; when the buckle of the first seat belt 3 is normally fastened, the fastened object (such as a hanging ring, a rope, etc.) will press and open the first limit switch 13, the first transmitting device 12 will not be powered, and the first receiving device 22 will not be powered. The first danger signal will not be received, and the alarm device 23 will not work. At this time, the operator is protected by the first safety belt 3; when the buckle of the first safety belt 3 is not fastened, the first limit switch 13 is in a normally closed state, and the first sending device 12 is energized to send the first danger signal to the first receiving device 22. After the first receiving device 22 receives the first danger signal, the alarm device 23 is controlled to be energized and turned on, thereby reminding the operator and / or guardian that they have not fastened their safety belts, avoiding safety accidents caused by illegal use of safety belts, and ensuring the safety of the operator when working at heights.

[0030] Furthermore, it also includes a second safety belt and a second signaling module, the second signaling module includes a second signaling power supply, a second signaling device, a second limit switch and a second signaling circuit, the second signaling power supply is used to supply power to the second signaling device through the second signaling circuit and the second limit switch, the second signaling module is provided on the second safety belt, the lever of the second limit switch is set toward the inner side of the buckle of the second safety belt, and the second limit switch is normally closed; the first receiving device 22 includes a receiving device body 221 and an AND gate element 222, the receiving device body 221 is connected to the alarm device 23 through the AND gate element 222, and the second signaling device is used to send a second danger signal to the receiving device body 221; when the receiving device body 221 receives the first danger signal and the second danger signal, the receiving device body 221 controls the alarm device 23 to open through the AND gate element 222.

[0031] In this embodiment, the operator can wear the second safety belt and the first safety belt 3 at the same time. The first signaling module 1 is arranged on the first safety belt 3, and the second signaling module is arranged on the second safety belt. The structures of the first signaling module 1 and the second signaling module are basically the same. The second safety belt is equivalent to a backup for the first safety belt 3 to further improve safety. Figure 4 As shown, the first receiving device 22 specifically includes a receiving device body 221 and an AND gate element 222. When the first safety belt 3 and the second safety belt are both normally fastened, the first limit switch 13 and the second limit switch are disconnected by the force of the fastened object, the first sending device 12 and the second sending device are not powered, the receiving device body 221 does not receive the first danger signal and the second danger signal, and the alarm device 23 is turned off; when only one of the buckles of the first safety belt 3 and the second safety belt is not fastened, that is, the receiving device body 221 only receives one of the first danger signal and the second danger signal, the alarm device 23 is turned off; when both the first safety belt 3 and the second safety belt are not fastened, the receiving device body 221 receives the first danger signal and the second danger signal, and the receiving device body 221 controls the alarm device 23 to open through the AND gate element 222. At this time, the first safety belt 3 and the spare second safety belt are not fastened, so the alarm device 23 can serve as a reminder and warning to the operator and the guardian to ensure the safety of the operator when working at height.

[0032] Furthermore, it also includes an anti-fall differential and a third signaling module, the third signaling module includes a third signaling power supply, a third signaling device, a third limit switch and a third signaling circuit, the third signaling power supply is used to supply power to the third signaling device through the third signaling circuit and the third limit switch, the anti-fall differential is provided with the third signaling module, the lever of the third limit switch is arranged toward the inner side of the buckle of the anti-fall differential, and the third limit switch is normally closed; the third signaling device is used to send a third danger signal to the receiving device body 221; when the receiving device body 221 receives the first danger signal, the second danger signal and the third danger signal, the receiving device body 221 controls the alarm device 23 to open through the AND gate element 222.

[0033] In this embodiment, the operator can wear the first safety belt 3, the second safety belt and the anti-fall differential at the same time. The first signaling module 1 is arranged on the first safety belt 3, the second signaling module is arranged on the second safety belt, and the third signaling module is arranged on the anti-fall differential. The structures of the first signaling module 1, the second signaling module and the third signaling module are basically the same. The second safety belt is a backup for the first safety belt 3, and the anti-fall differential can prevent the operator from falling after the first safety belt 3 and the second safety belt fail, so as to further improve safety. Figure 4 and Figure 5 As shown, only when the receiving device body 221 receives the first danger signal, the second danger signal and the third danger signal, the receiving device body 221 will control the alarm device 23 to turn on through the AND gate element 222, and in other cases (that is, only one or two of the first danger signal, the second danger signal and the third danger signal are received, and the case where none of the three are received), the alarm device 23 is turned off.

[0034] In this way, the first safety belt 3, the second safety belt and the anti-fall differential can better ensure the safety of the operator when working at height, and the automatic safety belt alarm system can activate the alarm device 23 to remind the operator and / or guardian when the first safety belt 3, the second safety belt and the anti-fall differential are not fastened (that is, when the receiving device body 221 receives the first danger signal, the second danger signal and the third danger signal), so as to better protect the operator and prevent falling accidents.

[0035] Furthermore, the first signaling module 1 also includes a first signaling switch 15 arranged on the first signaling circuit 14; the second signaling module also includes a second signaling switch arranged on the second signaling circuit; and the third signaling module also includes a third signaling switch arranged on the third signaling circuit.

[0036] Combination Figure 3 As shown, the first transmitting switch 15 is arranged on the first transmitting circuit 14, and serves as the main switch function of the first transmitting module 1. Similarly, the second transmitting switch serves as the main switch function in the second transmitting module, and the third transmitting switch serves as the main switch function in the third transmitting module. When the first transmitting module 1, the second transmitting module and the third transmitting module are not needed, the first transmitting switch 15, the second transmitting switch and the third transmitting switch can be turned off to save power.

[0037] Furthermore, the first signal receiving module 2 further includes a first signal receiving switch 25 disposed on the first signal receiving circuit 24 .

[0038] Combination Figure 4 As shown, the first receiving switch 25 is arranged on the first receiving circuit 24, and serves as the main switch function of the first receiving module 2. When the first receiving module 2 is not needed, the first receiving switch 25 can be turned off to save power.

[0039] Furthermore, the first safety belt 3 is provided with a first protective cover 31, and the first sending module 1 is installed in the first protective cover 31; the second safety belt is provided with a second protective cover, and the second sending module is installed in the second protective cover; the anti-fall differential is provided with a third protective cover, and the third sending module is installed in the third protective cover.

[0040] Combination Figure 1 As shown, a first protective cover 31 is provided on the rope of the first safety belt 3, and the first protective cover 31 can prevent the rope of the first safety belt 3 from being worn and waterproof. Similarly, the second protective cover can prevent the rope of the second safety belt from being worn and waterproof. The third protective cover can prevent the rope of the anti-fall differential from being worn and waterproof. The first transmitting module 1 is installed in the first protective cover 31, the second transmitting module is installed in the second protective cover, and the third transmitting module is installed in the third protective cover.

[0041] In this way, the first protective cover 31, the second protective cover and the third protective cover can play a role in waterproofing and anti-wearing for the first signal transmitting module 1, the second signal transmitting module and the third signal transmitting module, thereby extending the service life.

[0042] Furthermore, the lever of the first limit switch 13 is rotatably connected to a first roller 131 ; the lever of the second limit switch is rotatably connected to a second roller; and the lever of the third limit switch is rotatably connected to a third roller.

[0043] Combination Figure 1 and Figure 2 As shown, the first roller 131 is rotatably connected to the lever of the first limit switch 13. Taking the first safety belt 3 and the rope as an example, the first roller 131 is in rolling contact with the rope. Similarly, the second roller is rotatably connected to the lever of the second limit switch, and the third roller is rotatably connected to the lever of the third limit switch.

[0044] In this way, the first roller 131, the second roller and the third roller play a role in reducing friction, thereby preventing the lever from directly contacting the engaged object (such as a hanging ring, a rope, etc.) and causing wear.

[0045] Furthermore, the first transmitting power source 11, the second transmitting power source and the third transmitting power source are all button batteries.

[0046] In this embodiment, the first signal transmitting power source 11, the second signal transmitting power source and the third signal transmitting power source all use button batteries that occupy a small space, which is beneficial for reducing the size of the first signal transmitting module 1, the second signal transmitting module and the third signal transmitting module and minimizing the impact on the seat belt.

[0047] Furthermore, the first receiving power source 21 is a rechargeable battery.

[0048] In this embodiment, since the first receiving module 2 can be carried by the guardian, or directly fixed at a corresponding position for the guardian to view and supervise, a rechargeable battery can be used so that the first receiving module 2 can be used continuously for a long time, so as to facilitate the guardian to continuously supervise and protect the operator.

[0049] Furthermore, the alarm device 23 is a buzzer or a voice alarm.

[0050] The alarm device 23 can select a buzzer or a voice alarm as needed. Compared with alarm methods such as light and vibration, it can more effectively and directly remind the operator and / or guardian, thereby playing a better protective role.

[0051] In the description of the present invention, it should be understood that the directional terms "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0053] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A seat belt automatic warning system, characterized in that: The device comprises a first signal transmitting module, a first signal receiving module and a first safety belt, wherein the first signal transmitting module comprises a first signal transmitting power supply, a first signal transmitting device, a first limit switch and a first signal transmitting circuit, and the first signal receiving module comprises a first signal receiving power supply, a first signal receiving device, an alarm device and a first signal receiving circuit, wherein: The first signal transmitting power source is used to supply power to the first signal transmitting device through the first signal transmitting circuit and the first limit switch. The first signal transmitting module is provided on the first safety belt. The lever of the first limit switch is arranged toward the inner side of the buckle of the first safety belt. The first limit switch is normally closed. The first receiving power supply is used to supply power to the first receiving device and the alarm device through the first receiving circuit, and the first sending device is used to send a first danger signal to the first receiving device; When the first receiving device receives the first danger signal, the first receiving device controls the alarm device to turn on.

2. The automatic seat belt warning system according to claim 1, characterized in that: It also includes a second safety belt and a second signaling module, the second signaling module includes a second signaling power supply, a second signaling device, a second limit switch and a second signaling circuit, the second signaling power supply is used to supply power to the second signaling device through the second signaling circuit and the second limit switch, the second safety belt is provided with the second signaling module, the lever of the second limit switch is arranged toward the inner side of the buckle of the second safety belt, and the second limit switch is normally closed; The first receiving device comprises a receiving device body and an AND gate element, the receiving device body is connected to the alarm device via the AND gate element, and the second sending device is used to send a second danger signal to the receiving device body; When the receiving device body receives the first danger signal and the second danger signal, the receiving device body controls the alarm device to turn on through the AND gate element.

3. The automatic seat belt warning system according to claim 2, characterized in that: It also includes an anti-fall differential and a third signaling module, the third signaling module includes a third signaling power supply, a third signaling device, a third limit switch and a third signaling circuit, the third signaling power supply is used to supply power to the third signaling device through the third signaling circuit and the third limit switch, the anti-fall differential is provided with the third signaling module, the lever of the third limit switch is arranged toward the inner side of the buckle ring of the anti-fall differential, and the third limit switch is normally closed; The third signal transmitting device is used to send a third danger signal to the receiving device body; When the receiving device body receives the first danger signal, the second danger signal and the third danger signal, the receiving device body controls the alarm device to turn on through the AND gate element.

4. The automatic seat belt warning system according to claim 3, characterized in that: The first signaling module further includes a first signaling switch arranged on the first signaling circuit; the second signaling module further includes a second signaling switch arranged on the second signaling circuit; and the third signaling module further includes a third signaling switch arranged on the third signaling circuit.

5. The automatic seat belt warning system according to claim 1, characterized in that: The first receiving module further includes a first receiving switch disposed on the first receiving circuit.

6. The automatic seat belt warning system according to claim 3, characterized in that: The first safety belt is provided with a first protective cover, and the first signal transmitting module is installed on the first protective cover; the second safety belt is provided with a second protective cover, and the second signal transmitting module is installed on the second protective cover; the anti-fall differential is provided with a third protective cover, and the third signal transmitting module is installed on the third protective cover.

7. The automatic seat belt warning system according to claim 3, characterized in that: The lever of the first limit switch is rotatably connected to a first roller; the lever of the second limit switch is rotatably connected to a second roller; and the lever of the third limit switch is rotatably connected to a third roller.

8. The automatic seat belt warning system according to claim 3, characterized in that: The first transmitting power source, the second transmitting power source and the third transmitting power source are all button batteries.

9. The automatic seat belt warning system according to claim 1, characterized in that: The first receiving power source is a rechargeable battery.

10. The automatic seat belt warning system according to claim 1, characterized in that: The warning device is a buzzer or a voice alarm.

Images