CN207481663U - A kind of intelligence drunk-driving prevention detecting system - Google Patents

Abstract

The utility model discloses an intelligent anti-drunk driving detection system, which comprises an alcohol sensor for detecting the driver's alcohol concentration and a pressure sensor for detecting the use state of the driver's seat, the alcohol sensor and the pressure sensor are connected to the signal receiver of the controller The control terminal of the controller is connected with a wireless module, and the wireless module is connected to the vehicle central control unit ECU, and the central control unit ECU is connected to the electronic parking brake system and the ignition. The utility model detects the alcohol concentration through the alcohol sensor, and when the set threshold is reached, the ignition switch is automatically turned off and the electronic parking system is started, which effectively prevents drunk driving and improves driving safety, and first judges whether the driving seat is driven by a pressure sensor. Then start the anti-drinking driving detection system to avoid starting the intelligent anti-drinking driving detection system at any time, which has the effect of saving energy. The wireless transmission mode is adopted to reduce cable layout and facilitate maintenance.

Description

An intelligent anti-drinking driving detection system

technical field

The utility model belongs to the technical field of driving safety, in particular to an intelligent detection system for preventing drunk driving.

Background technique

Drunk driving is extremely harmful, not only endangering the personal safety of the driver himself and others, but also having a negative impact on society.

Contents of the invention

The technical problem to be solved by the utility model is to provide an intelligent detection system for preventing drunk driving, which can effectively prevent drunk driving and improve driving safety, so as to solve the problems existing in the prior art.

The technical scheme adopted by the utility model is: an intelligent anti-drunk driving detection system, including an alcohol sensor for detecting the alcohol concentration of the driver and a pressure sensor for detecting the use state of the driver's seat, the alcohol sensor and the pressure sensor are connected to the control The signal receiving end of the controller, the control end of the controller is connected with a wireless module, the wireless module is connected to the car central control unit ECU, and the central control unit ECU is connected to the electronic parking brake system and the ignition.

Preferably, three alcohol sensors are used, one of which is installed on the steering wheel, and the other two are symmetrically installed on the seat roof.

Preferably, the above-mentioned wireless module adopts a Bluetooth module.

Preferably, the above-mentioned controller adopts STC12C5A16AD single-chip microcomputer.

Preferably, the above-mentioned controller is connected with an audible and visual alarm.

Beneficial effects of the utility model: compared with the prior art, the utility model detects the alcohol concentration through the alcohol sensor, and when it reaches the set threshold, the ignition switch is automatically turned off and the electronic parking system is activated, which effectively prevents drunk driving and improves driving safety , and first judge whether the driver's seat is driven by the pressure sensor, and then start the anti-drinking driving detection system to avoid starting the intelligent anti-drinking driving detection system at any time, which plays a role in energy saving. The wireless transmission mode is adopted to reduce cable layout and facilitate maintenance.

Description of drawings

Fig. 1 is the control principle structure schematic diagram of the present utility model;

Fig. 2 is a block diagram of the main program control flow;

Figure 3 is a block diagram of the bluetooth module program flow.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is further introduced.

Implementation: 1: As shown in Figure 1-Figure 3, an intelligent anti-drinking driving detection system includes an alcohol sensor for detecting the driver's alcohol concentration and a pressure sensor for detecting the driver's seat use state, the alcohol sensor and the pressure sensor The sensor is connected to the signal receiving end of the controller, the control end of the controller is connected to a wireless module, the wireless module is connected to the central control unit ECU of the car, and the central control unit ECU is connected to the electronic parking brake system and the ignition.

Preferably, three alcohol sensors are used, one of which is installed on the steering wheel, and the other two are symmetrically installed on the seat roof.

The pressure sensor is a thin-film contact sensor, and the contact of the sensor is installed on the inner surface of the driver's seat. When the pressure felt by the seat exceeds a certain value, a trigger signal is generated. Alcohol sensor adopts MQ-3 semiconductor type alcohol sensor, which is processed by sensitive material silicon dioxide. The sensitive material has low conductivity in the air. When alcohol gas exists in the driving space, the conductivity of silicon dioxide increases The gas concentration changes, and the transmitter circuit of the sensor converts the change of the conductivity into the change of the output voltage 0-5V, and the gas concentration corresponding to the voltage value.

Preferably, the above-mentioned wireless module adopts a bluetooth module, and the bluetooth module is an ATK-HC05 bluetooth serial port module, which is small in size, supports a wide range of baud rates, and is easy to use.

Preferably, the above-mentioned controller adopts STC12C5A16AD single-chip microcomputer, adopts STC12C5A16AD single-chip microcomputer, through designing the peripheral circuit to realize the acquisition and calculation of the signal, and output the control signal.

Preferably, the above-mentioned controller is connected with an audible and visual alarm.

The above controller is connected with a status display module, using LCD1602 liquid crystal display, with simple interface program design, clear display, light weight, small size and easy installation.

Embodiment 2: a kind of detection method of intelligent anti-drinking driving detection system, the method comprises the following steps:

(1) Use the pressure sensor to judge whether there is a driver at the main driving position. When the pressure sensor does not detect the pressure signal reaching the set threshold, the controller does not work. When the pressure sensor detects the pressure signal reaching the set threshold exceeds the set threshold. When the fixed value is 25kg, the anti-drinking driving system will be activated;

(2) The signal is detected by three alcohol sensors to detect the gas alcohol concentration near the driver's position. The alcohol sensor converts the alcohol concentration signal into a voltage signal of 0-5V, which is sent by the Bluetooth transmitter module after A/D conversion, and is sent by After the bluetooth receiver receives the signal, the central control unit ECU analyzes and calculates the alcohol concentration, and the status display module displays the current alcohol concentration in the air;

(3) When the set alcohol concentration threshold (20mg/100ml) is exceeded, the alarm buzzer will be triggered immediately and the ignition control relay of the igniter will work. The central control unit ECU will control the low-voltage circuit of the ignition coil according to the alcohol concentration. If the alcohol concentration When it is greater than the upper limit, the relay is disconnected, the ignition circuit is disconnected, and the electronic parking brake system is activated, the car cannot be started, the warning light flashes, and the buzzer works; when the pressure sensor signal disappears, the alcohol concentration decreases, and the ignition coil control switch is closed , the sound and light system is turned off, and the ignition system is in a normal state.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model, therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (5)

1. An intelligent anti-drunk driving detection system is characterized in that: it comprises an alcohol sensor for detecting the driver's alcohol concentration and a pressure sensor for detecting the driver's seat use state, and the alcohol sensor and the pressure sensor are connected to the signal of the controller At the receiving end, the control end of the controller is connected with a wireless module, the wireless module is connected to the vehicle central control unit ECU, and the central control unit ECU is connected to the electronic parking brake system and the ignition. 2. A kind of intelligent anti-drinking driving detection system according to claim 1, characterized in that: three alcohol sensors are used, one of which is installed on the steering wheel, and the other two are symmetrically installed on the seat roof. 3. A kind of intelligent anti-drinking driving detection system according to claim 1, characterized in that: the wireless module adopts a bluetooth module. 4. A kind of intelligent anti-drinking driving detection system according to claim 1, characterized in that: the controller adopts STC12C5A16AD single-chip microcomputer. 5. An intelligent anti-drinking driving detection system according to claim 1, characterized in that: the controller is connected with an audible and visual alarm.