Vehicle-mounted fatigue driving alarm device

Abstract

The utility model relates to the technical field of fatigue driving, in particular to a vehicle-mounted fatigue driving alarm device which comprises a base and a plurality of sliding sleeves connected to the base in a sliding mode, first springs are connected between the sliding sleeves and the base, a movable seat is connected between the sliding sleeves in a sliding mode, and the movable seat is connected with the base in a sliding mode. A second spring is connected between the moving seat and the sliding sleeve, and a monitoring frame body is arranged on the moving seat. Through the action of the first spring and the second spring, vibration generated in the vehicle driving process can be buffered as much as possible, so that strenuous vibration of the monitoring frame body is avoided, and the purpose of protecting electrical parts arranged on the monitoring frame body is achieved; by arranging the vertical retarding mechanism and the transverse retarding mechanism, the situation that signals captured by the human body sensor are not accurate enough due to the fact that the moving speed of the human body sensor is too high is avoided, meanwhile, the buffering function can be further achieved, and the shockproof effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue driving, in particular to a vehicle-mounted fatigue driving alarm device. Background Art

[0002] Compared with other small cars, the characteristics of smart cars equipped with fatigue alarm systems are energy saving and environmental protection, and they can ensure that drivers will not drive while fatigued to the greatest extent. Nowadays, various traffic accidents have caused damage to many families, and inattention is one of the culprits. Fatigue driving during traffic is an important reason.

[0003] At present, the methods for detecting fatigue driving mainly include monitoring based on driver physiological signals (such as heart rate, electroencephalogram, etc.), vehicle behavior (such as speed, lane departure, etc.) and driver behavior (such as blinking frequency, head posture, etc.). However, when capturing the driver's physiological and driver behavior signals, a monitoring device is usually set on the vehicle body to capture these signals to determine whether the driver is in fatigue driving. If the driver is in fatigue driving, an alarm will be issued, but the vehicle will vibrate during driving, and the monitoring device will also be in vibration. In the long run, the monitoring device is likely to fail or be scrapped, which seriously affects the safety of the driver. Therefore, a vehicle-mounted fatigue driving alarm device with a shock absorption function is proposed. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a vehicle-mounted fatigue driving warning device with a shock-absorbing function.

[0005] A vehicle-mounted fatigue driving alarm device comprises a base and a plurality of sliding sleeves slidably connected to the base, a first spring is connected between the sliding sleeve and the base, a moving seat is slidably connected between the sliding sleeves, a second spring is connected between the moving seat and the sliding sleeve, a monitoring frame is arranged on the moving seat, a human body sensor, a power indicator light, a photosensitive module, a power interface and an alarm are arranged on the monitoring frame, a vertical deceleration mechanism is arranged between the sliding sleeve and the base, and a horizontal deceleration mechanism is arranged between the moving seat and the sliding sleeve.

[0006] Furthermore, the vertical deceleration mechanism includes a first piston sleeve arranged on the base and a first piston rod arranged on the sliding sleeve, the first piston rod slides inside the first piston sleeve, and a first through hole is opened on the first piston sleeve.

[0007] Furthermore, the lateral deceleration mechanism includes a bracket arranged on the sliding sleeve and a second piston sleeve arranged on the bracket, a second piston rod is arranged on the movable seat, the second piston rod slides in the second piston sleeve, and a second through hole is opened on the second piston sleeve.

[0008] Furthermore, the first piston rod is arranged in the middle of the sliding sleeve.

[0009] Furthermore, the second piston rod is arranged in the middle of the moving seat.

[0010] Furthermore, the fatigue driving alarm device also includes a cleaning mechanism, which includes a motor arranged on a monitoring frame and a swing block arranged on an output shaft of the motor, and a wiping member is arranged on the swing block.

[0011] Furthermore, the wiping member is a brush or a sponge.

[0012] The utility model can judge whether the driver is in a state of fatigue driving by arranging a human body sensor, and the alarm can alert the driver who is in a state of fatigue driving. Through the action of the first spring and the second spring, the vibration generated in the process of vehicle driving can be fully buffered, thereby avoiding the monitoring frame from vigorous vibration, and protecting the electrical components arranged on the monitoring frame. By arranging a vertical deceleration mechanism and a horizontal deceleration mechanism, it is avoided that the human body sensor moves too fast, thereby causing the signal captured by the human body sensor to be inaccurate. At the same time, it can further achieve the buffering function and have a shockproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is a partial three-dimensional structural schematic diagram of the utility model.

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the second spring of the utility model.

[0016] Figure 4 It is a three-dimensional structural schematic diagram of the vertical retarding mechanism of the utility model.

[0017] Figure 5 It is a partial three-dimensional structural schematic diagram of the vertical retarding mechanism of the utility model.

[0018] Figure 6 It is a three-dimensional structural schematic diagram of the transverse retarding mechanism of the utility model.

[0019] Figure 7 It is a partial three-dimensional structural schematic diagram of the transverse retarding mechanism of the utility model.

[0020] Figure 8 This is a schematic diagram of the first three-dimensional structure of the cleaning mechanism of the utility model.

[0021] Fig. 9This is a schematic diagram of the second three-dimensional structure of the cleaning mechanism of the utility model.

[0022] Description of main component symbols:

[0023] 1-base, 2-sliding sleeve, 3-moving seat, 4-first spring, 5-monitoring frame, 6-human body sensor, 7-power indicator light, 8-photosensitive module, 9-power interface, 10-alarm, 11-second spring, 12-vertical deceleration mechanism, 121-first piston rod, 122-first piston sleeve, 123-first through hole, 13-lateral deceleration mechanism, 131-bracket, 132-second piston sleeve, 133-second piston rod, 134-second through hole, 14-cleaning mechanism, 141-motor, 142-swing block, 143-wiping piece.

[0024] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] A vehicle-mounted fatigue driving alarm device, such as Figure 1-Figure 7As shown, it includes a base 1 and several sliding sleeves 2 slidably connected on the base 1, a first spring 4 is connected between the sliding sleeve 2 and the base 1, a moving seat 3 is slidably connected between the sliding sleeves 2, a second spring 11 is connected between the moving seat 3 and the sliding sleeve 2, a monitoring frame 5 is arranged on the moving seat 3, a human body sensor 6, a power indicator light 7, a photosensitive module 8, a power interface 9 and an alarm 10 are arranged on the monitoring frame 5, a vertical deceleration mechanism 12 is arranged between the sliding sleeve 2 and the base 1, and a horizontal deceleration mechanism 13 is arranged between the moving seat 3 and the sliding sleeve 2.

[0029] Among them, the base 1 is installed at a suitable position of the vehicle body, two sliding sleeves 2 are slidably arranged inside the base 1, a moving seat 3 is slidably arranged between the two sliding sleeves 2, and a monitoring frame 5 is arranged on the moving seat 3, so that the monitoring frame 5 can move up and down and left and right, a second spring 11 is arranged between the sliding sleeve 2 and the moving seat 3, and the second spring 11 can play a buffering role. When the monitoring frame 5 moves left and right, the second spring 11 can buffer the kinetic energy, and a first spring 4 is arranged between the base 1 and the sliding sleeve 2. When the monitoring frame 5 moves up and down, the first spring 4 can The kinetic energy of the up and down movement of the frame 5 is buffered, the human body sensor 6 is used to extract three major parameters: electromyographic characteristic parameters, pulse characteristic parameters, and blood oxygen saturation, and the degree of human fatigue is calculated through relevant formulas. The power interface 9 is used as the power port of the driver's fatigue alarm system during vehicle driving. It is connected to the vehicle power supply and the fatigue processing program is turned on at the same time. The alarm 10 is a buzzer alarm 10. When the fatigue range is reached, an alarm will be sounded. The power indicator light 7 is a power indicator light 7. When the vehicle is driving normally, it will display green. The photosensitive module 8 should be handled in time at night and in foggy and rainy days.

[0030] The specific human body sensor 6 parameter extraction methods are as follows:

[0031] EMG feature parameter extraction:

[0032] As the fatigue level of human body increases, the amplitude of myoelectric signal will increase and the frequency will decrease. Therefore, the fatigue state of the driver can be detected by analyzing myoelectric signal. By performing time domain analysis and frequency domain analysis on the processed data, the characteristic parameters of myoelectric signal are obtained: integrated myoelectric value (IEMG), root mean square value (RMS), mean power frequency (MPF), and median frequency (MF).

[0033] The integrated electromyographic value refers to the total amount of discharge of motor units involved in the activity in the muscle within a certain period of time. Usually, its amplitude increases with the deepening of fatigue. The root mean square value reflects the degree of recruitment of motor units and the degree of synchronization of their discharge frequency. The calculation formulas are:

[0034]

[0035]

[0036] Among them, t1 is the start time of collecting EMG signals, t2 is the end time of collecting EMG signals, and *X(t)* is the size of EMG signals.

[0037] The surface electromyographic signal is subjected to fast Fourier transform to obtain the power spectrum of the electromyographic signal, which reflects the strength of the electromyographic signal in different frequency ranges. The median frequency and average power frequency are commonly used evaluation indicators of muscle fatigue. The calculation formula is:

[0038]

[0039]

[0040] Among them, PSD(f) is power spectrum density, MF is median frequency, f is electromyographic signal frequency, f0 is upper frequency limit, i.e. half of sampling frequency, equal to 500Hz, and the decrease of MPF and MF indicates that the subject has muscle fatigue. At this time, the buzzer alarm 10 will sound an alarm, and the fatigue alarm system will take corresponding measures to timely warn and protect personal safety.

[0041] Pulse feature parameter extraction:

[0042] By performing time domain analysis and frequency domain analysis on the processed pulse signal data, the characteristic parameters of the pulse signal are obtained:

[0043] RR interval mean (MEAN), RR interval standard deviation (SDNN), low frequency power (LF), high frequency power (HF). In the pulse signal, firstly use wavelet transform to detect the peak of each main wave, and find the time difference between two adjacent main wave peaks, recorded as RRi (i = 1, 2, 3...), then the mean of RRi is the mean of RR interval, the standard deviation of RRi is the standard deviation of RR interval, and use fast Fourier transform (FFT) to convert time domain indicators into frequency domain indicators to obtain low frequency power and high frequency power. The calculation formula is:

[0044]

[0045]

[0046] Where N represents the total number of normal pulse beats, RRi represents the time difference between the i-th adjacent main wave peaks, MEAN represents the mean of the RR interval, and SDNN represents the standard deviation of the RR interval.

[0047] If the standard deviation is not within the safe range, the buzzer alarm 10 will sound an alarm, and the fatigue alarm system will take corresponding measures to issue a timely warning to protect personal safety.

[0048] Blood oxygen saturation characteristic parameter extraction:

[0049] When the human body is in a state of fatigue, the blood oxygen saturation content decreases by 9. By performing time domain analysis on the processed experimental data, the characteristic parameter of blood oxygen saturation is obtained: blood oxygen standard deviation (RSD). The degree of fluctuation obtained according to the Doppler principle can accurately reflect the fatigue state of the subject. The calculation formula is:

[0050]

[0051] Among them, RAVG represents the average blood oxygen saturation value, N represents the total number of blood oxygen data in the collected samples, and Ri represents the blood oxygen saturation value of the i-th sample.

[0052] If the blood oxygen standard deviation is not within the safe range, the buzzer alarm 10 will sound an alarm, and the fatigue alarm system will take corresponding measures to provide timely warnings to protect personal safety.

[0053] The vertical retarding mechanism 12 includes a first piston sleeve 122 disposed on the base 1 and a first piston rod 121 disposed on the sliding sleeve 2 . The first piston rod 121 slides inside the first piston sleeve 122 . A first through hole 123 is formed on the first piston sleeve 122 .

[0054] When the vehicle vibrates during driving, the vertical deceleration mechanism 12 can make the monitoring frame 5 move vertically slowly, thereby ensuring that the human body sensor 6 can capture the signal well;

[0055] Specifically, when the vibration generated by the vehicle during driving is transmitted to the fatigue driving alarm device, the moving seat 3 will move left and right and up and down. The kinetic energy of the movement can be fully buffered by the first spring 4 and the second spring 11, thereby avoiding the monitoring frame 5 from generating severe vibrations, and protecting the electrical components arranged on the monitoring frame 5. When the moving seat 3 moves up and down, the corresponding sliding sleeve 2 also moves up and down. The up and down movement of the sliding sleeve 2 will drive the first piston rod 121 to move up and down in the first piston sleeve 122. Due to the first through hole 123 provided on the first piston sleeve 122, when the first piston rod 121 moves up and down, the gas in the first piston sleeve 122 and the external gas can only go out or come in through the first through hole 123, and the exhaust or intake speed through the first through hole 123 is slow, so the up and down movement speed of the sliding sleeve 2 will be limited, thereby limiting the up and down movement speed of the monitoring frame 5, to prevent the human body sensor 6 on the monitoring frame 5 from moving up and down too fast, thereby causing the signal captured by the human body sensor 6 to be inaccurate, and at the same time, it can further achieve the buffering function and play a shockproof effect.

[0056] The transverse deceleration mechanism 13 includes a bracket 131 arranged on the sliding sleeve 2 and a second piston sleeve 132 arranged on the bracket 131. A second piston rod 133 is arranged on the moving seat 3. The second piston rod 133 slides in the second piston sleeve 132. A second through hole 134 is opened on the second piston sleeve 132.

[0057] When the vibration generated by the vehicle during driving is transmitted to the fatigue driving alarm device, when the moving seat 3 moves left and right in the sliding sleeve 2, the left and right movement of the moving seat 3 will drive the second piston rod 133 to move up and down in the second piston sleeve 132. Due to the second through hole 134 provided on the second piston sleeve 132, when the second piston rod 133 moves up and down, the gas in the second piston sleeve 132 and the external gas can only go out or come in through the second through hole 134, and the exhaust or intake speed through the second through hole 134 is slow, so the left and right movement speed of the moving seat 3 is limited, thereby limiting the left and right movement speed of the monitoring frame 5, so as to prevent the human body sensor 6 on the monitoring frame 5 from moving too fast left and right, thereby causing the signal captured by the human body sensor 6 to be inaccurate, and at the same time, it can further achieve the buffering function and play a shockproof effect.

[0058] To sum up, by setting up the human body sensor 6, it is possible to judge whether the driver is in a state of fatigue driving, and the alarm 10 can alert the driver who is in a state of fatigue driving. Through the action of the first spring 4 and the second spring 11, the vibration generated during the driving of the vehicle can be fully buffered, thereby avoiding the monitoring frame 5 from vigorous vibration, and protecting the electrical components arranged on the monitoring frame 5. By setting up the vertical deceleration mechanism 12 and the horizontal deceleration mechanism 13, it is possible to avoid the human body sensor 6 from moving too fast, thereby causing the signal captured by the human body sensor 6 to be inaccurate. At the same time, it can further achieve the buffering function and have a shockproof effect.

[0059] The first piston rod 121 is disposed in the middle of the sliding sleeve 2 .

[0060] The first piston rod 121 is arranged in the middle of the sliding sleeve 2, so that the first piston rod 121 is subjected to uniform force, and the device can operate well.

[0061] The second piston rod 133 is disposed in the middle of the moving seat 3 .

[0062] The second piston rod 133 is arranged in the middle of the movable seat 3, so that the second piston rod 133 is evenly stressed and the device can operate well.

[0063] like Figure 8-Figure 9As shown, the fatigue driving alarm device also includes a cleaning mechanism 14, which includes a motor 141 arranged on the monitoring frame 5 and a swing block 142 arranged on the output shaft of the motor 141, and a wiping piece 143 is arranged on the swing block 142, and the wiping piece 143 is a brush or a sponge.

[0064] The operator can start the motor 141, and the output shaft of the motor 141 drives the swing block 142 to swing, and the swing block 142 drives the wiping member 143 to swing, and the wiping member 143 swings in the direction close to the human body sensor 6 to wipe off all the mist adhering to the human body sensor 6, thereby ensuring the stable operation of the human body sensor 6.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A vehicle-mounted fatigue driving alarm device, characterized in that: It includes a base and several sliding sleeves slidably connected to the base, a first spring is connected between the sliding sleeve and the base, a moving seat is slidably connected between the sliding sleeves, a second spring is connected between the moving seat and the sliding sleeve, a monitoring frame is arranged on the moving seat, a human body sensor, a power indicator light, a photosensitive module, a power interface and an alarm are arranged on the monitoring frame, a vertical deceleration mechanism is arranged between the sliding sleeve and the base, and a horizontal deceleration mechanism is arranged between the moving seat and the sliding sleeve.

2. The fatigue driving alarm device according to claim 1 is characterized in that: The vertical deceleration mechanism comprises a first piston sleeve arranged on the base and a first piston rod arranged on the sliding sleeve. The first piston rod slides inside the first piston sleeve. A first through hole is formed on the first piston sleeve.

3. The fatigue driving alarm device according to claim 1, characterized in that: The transverse deceleration mechanism includes a bracket arranged on the sliding sleeve and a second piston sleeve arranged on the bracket. A second piston rod is arranged on the movable seat. The second piston rod slides in the second piston sleeve. A second through hole is opened on the second piston sleeve.

4. The fatigue driving alarm device according to claim 2 is characterized in that: The first piston rod is arranged at the middle part of the sliding sleeve.

5. The fatigue driving alarm device according to claim 3 is characterized in that: The second piston rod is arranged at the middle part of the moving seat.

6. The fatigue driving warning device according to claim 1 is characterized in that: The fatigue driving alarm device also includes a cleaning mechanism, which includes a motor arranged on a monitoring frame and a swing block arranged on an output shaft of the motor, wherein a wiping member is arranged on the swing block.

7. The fatigue driving warning device according to claim 6 is characterized in that: The wiping member is a brush or a sponge.

Images