Fatigue driving alarming device
A technology of fatigue driving and ultrasonic waves, which is applied in the field of warning devices, can solve problems that are likely to cause traffic accidents, and achieve the effect of reminding drivers
Inactive Publication Date: 2011-06-01
张海艇
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Problems solved by technology
[0002] At present, many drivers often drive vehicles with fatigue for a long time, which is easy to cause traffic accidents, and there is no facility in existing vehicles that can promptly send out a warning sound to remind the driver when the driver is tired.
Method used
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Embodiment Construction
[0009] Embodiments of the present invention will be described in detail with reference to the accompanying drawings: in the accompanying drawings, the ultrasonic transmitting circuit 1 is shown, the ultrasonic receiving circuit 2, the alarm delay circuit 3, the ultrasonic receiving head 4, the ultrasonic emitting head 9, the resistance 5,7, 8, 12, 14, 15, 16, operational amplifier 6, NOT gates 10, 13, capacitors 11, 18, triode 17, NAND gate 19, active buzzer 20, power supply 21 connection relationship. A fatigue driving warning device is composed of an ultrasonic wave transmitting circuit 1, an ultrasonic wave receiving circuit 2, and an alarm delay circuit 3. The ultrasonic wave transmitting circuit 1 contains an ultrasonic wave transmitting head 9, two NOT gates 10, 13, and two resistors 12, 14 and a capacitor 11, two NOT gates 10, 13 and two resistors 12, 14 and a capacitor 11 are connected into an oscillating circuit, and the described oscillating circuit is connected like ...
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The invention discloses a fatigue driving alarming device which consists of an ultrasonic transmission circuit, an ultrasonic receiving circuit and an alarming time-delay circuit. The working mode of the fatigue driving alarming device is as follows: the fatigue driving alarming device is placed at the lower front position of a driver; an ultrasonic transmission head and an ultrasonic receiving head are directed at the face of the driver; when the driver is in a normal state, the ultrasonic wave is not transmitted to the face of the driver, thus alarming is not performed; and when the face of the driver is forwards lowered due to fatigue, the ultrasonic receiving head receives the ultrasonic wave which is reflected from the face of the driver, a triode is conducted after the ultrasonic wave is amplified by an operational amplifier and the capacitance is charged, when the voltage of the capacitance is two thirds of the voltage of a power supply, an NAND gate is reversed, a source buzzer sends an alarming sound, a false alarm is not caused by the fact that the head of the driver is lowered occasionally because of the action of the time-delay circuit. The fatigue driving alarming device has the beneficial effects that the alarm sound can be timely sent when the driver is in a fatigue driving state, so as to play a role of warning the driver.
Description
Technical field [0001] The invention relates to a warning instrument, in particular to a fatigue driving warning instrument. Background technique [0002] At present, many drivers often drive vehicles with fatigue for a long time, which is easy to cause traffic accidents, and there is no facility in the existing vehicles that can send a warning sound in time to remind the driver when the driver is tired. Contents of the invention [0003] The purpose of the present invention is to provide a kind of fatigue driving warning instrument, it can send warning sound in time to remind the driver when the driver is tired. The fatigue driving warning device is composed of an ultrasonic wave transmitting circuit, an ultrasonic wave receiving circuit, and an alarm delay circuit. The ultrasonic wave transmitting circuit contains an ultrasonic wave emitting head and two non-magnetic wave generators for generating square waves Gate, and two resistors and a capacitor that are also used t...
Claims
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Inventor 张海艇
Owner 张海艇