CN203819228U - Anti-forgetting voice alarm system for parking and braking of automobiles - Google Patents

Abstract

The utility model provides an automobile parking brake anti-forgetting voice alarm system, which includes a signal acquisition unit, an electronic control unit, and a voice reminder unit; the signal acquisition module includes an analog ignition switch circuit for judging whether the engine is ignited and a handbrake for judging the position of the handbrake position sensor. After the engine is turned off, the stop signal will be transmitted to the control unit. At the same time, the control unit will receive the signal from the handbrake position sensor to determine whether the handbrake is in place. If the handbrake is not pulled or not in place, the control unit will drive the voice chip to generate a voice prompt. To remind the owner to pull the handbrake. The utility model slightly improves the original circuit and electronic control, and can realize the reminding function of preventing forgetting of the handbrake, which is easy to realize, has very obvious advantages, and can greatly improve the use safety of the vehicle.

Description

An anti-forgotten voice alarm system for automobile parking brake

technical field

The utility model relates to the field of automobile electronic automation, in particular to an automobile parking brake anti-forgetting voice alarm system.

Background technique

The parking brake of most cars in our country still adopts the traditional mechanical parking system, which is composed of brake lever, cable, shoe, etc. The hand brake handle pulls the brake cable with the principle of leverage to make the rear wheel brake shoe Discs or calipers are locked. This parking brake mode is operated by the driver to pull up the parking brake handle to lock the rear wheels. But there is a certain problem in this kind of parking brake method, that is, when the driver forgets to pull up the parking brake handle or does not fully pull it in place after parking, the car may slip and cause danger.

The main defects of ordinary parking brakes are as follows: on models with traditional mechanical parking systems, when the owner stops the car, he forgets to pull the handbrake or the handbrake is not pulled in place, especially for novices. This situation is more common, which will cause the vehicle to The danger of slipping the car causes more serious consequences. In fact, this situation just happens in daily life. Investigate the reason in its design, be because do not design the reminding device of parking brake forgetting to pull, if can design as the reminding device that safety belt is not fastened just can effectively solve this loophole.

Utility model content

The purpose of this utility model is to provide a car parking brake anti-forgotten voice alarm system, which can promptly remind the driver who did not pull the handbrake after parking to pull the handbrake, and effectively prevent property and personnel damage caused by the vehicle sliding due to the failure to pull the handbrake. At the same time, it can also remind the situation that the handbrake is pulled but not in place, so as to avoid accidents caused by rushing the brakes on steeper slopes.

In order to achieve the above object, the utility model has taken the following technical solutions:

An automobile parking brake anti-forgetting voice alarm system, comprising a signal acquisition unit, an electronic control unit, and a voice reminder unit; the signal acquisition unit is composed of a handbrake position sensor circuit and an analog ignition switch circuit; the handbrake position sensor circuit is used To judge the position of the handbrake and output the electric signal of the handbrake position; the analog ignition switch circuit judges whether the engine is ignited and outputs the electric signal of engine flameout alarm; the electronic control unit receives the electric signal of the handbrake position to judge whether the handbrake is pulled in place, if If the handbrake is not pulled or is not pulled in place, the electronic control unit generates an electric signal of the handbrake not in place, and outputs a warning signal after logical operation with the engine flameout warning signal; the voice reminder unit sends a voice warning according to the warning signal hint.

Further, the logical operation of the handbrake not in place electrical signal and the engine flameout warning electrical signal is specifically: when the handbrake is not pulled or is not pulled in place, the output handbrake not in place electrical signal is at a high level, and when the engine is turned off, output The engine flameout warning electrical signal is at a high level, and the above two warning electrical signals are ANDed; when the warning signal of the electronic control unit is at a high level, the voice reminder unit is driven to issue a voice warning prompt.

The beneficial effects of the utility model are: adding a voice reminding device to the original parking brake system, and only needing a slight improvement in the original circuit and electronic control, the reminder function of preventing forgetting of the handbrake can be realized. Set the position sensor directly on the handbrake, then design a relay circuit to judge the ignition switch signal, increase the ECU module control function, and then add a voice reminder module, and judge the ignition switch signal and the handbrake position signal by the analog ignition switch circuit and the handbrake position sensor respectively, and then communicate with ECU communicates, and then determines whether to send a signal to the voice alarm module to realize the reminder function of forgetting to pull the handbrake or the situation that the handbrake is not in place. It is easy to implement and has obvious advantages, which can greatly improve the safety of the vehicle.

Description of drawings

Fig. 1 is the structural diagram of the automobile parking brake anti-forgetting voice alarm system of the present utility model;

Fig. 2 is the circuit diagram of the anti-forgotten voice alarm system for automobile parking brake of the present invention, wherein Fig. 2 (a) is a circuit diagram of the analog ignition switch, control unit and handbrake position sensor, and Fig. 2 (b) is a circuit diagram of the voice reminder unit .

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in accompanying drawing 1, a kind of automobile parking brake anti-forgotten voice alarm system includes a signal acquisition unit, an electronic control unit, and a voice reminder unit; the signal acquisition unit is composed of a handbrake position sensor circuit and an analog ignition switch circuit; The handbrake position sensor circuit is used to judge the handbrake position and output the handbrake position electric signal; the analog ignition switch circuit judges whether the engine is ignited and outputs the engine flameout alarm electric signal; the electronic control unit receives the handbrake position electric signal, judges Whether the handbrake is pulled in place, if the handbrake is not pulled or not pulled in place, the electronic control unit generates an electrical signal that the handbrake is not in place, and outputs an alarm signal after logical operation with the engine flameout alarm signal; The above alarm signal is used to issue a voice alarm prompt.

The circuit diagram of the anti-forgotten voice alarm system for automobile parking brake of the utility model is shown in Figure 2, wherein Figure 2 (a) is a circuit diagram of the analog ignition switch, control unit and handbrake position sensor, and Figure 2 (b) is the voice alarm system. Reminder unit circuit diagram. The point a in Fig. 2 (a) is connected with the point a in Fig. 2 (b) to constitute the circuit diagram of the anti-forgotten voice alarm system of the automobile parking brake of the present invention.

The components of the simulated ignition switch include: 12V power supply, power interface, LM7805, relay, switch, button, pin header.

The components of the handbrake position sensor include: 100K resistor, 47K resistor, 10K resistor, 5.1K resistor, 1K resistor, 0.47K resistor, photoresistor, transistor 9014, 0.1uF ceramic capacitor, 30pF ceramic capacitor, 470uF electrolytic capacitor, 220uF electrolytic Capacitors, 22uF electrolytic capacitors, 10uF electrolytic capacitors, 4.7uF electrolytic capacitors, 0.1uF electrolytic capacitors, light-emitting diodes.

The components of the control unit include: 11.0592MHZ crystal oscillator, STC12C5A60S2 chip, 40-pin socket, 1K resistor and 10uF electrolytic capacitor.

The components of the voice reminder unit include: 47K resistor, 10K resistor, 5.1K resistor SD2560 voice chip 28-pin socket, voice alarm speaker, recording microphone, 0.1uF ceramic capacitor, 30pF ceramic capacitor, 470uF electrolytic capacitor, 220uF electrolytic capacitor, 22uF Electrolytic capacitors, 10uF electrolytic capacitors, 4.7uF electrolytic capacitors, 0.1uF electrolytic capacitors.

The utility model adds a voice reminding device to the original parking brake system, and only needs a slight improvement in the original circuit and electronic control to realize the reminder function of preventing forgetting of the handbrake. Set the position sensor directly on the handbrake, then design a relay circuit to judge the ignition switch signal, increase the ECU module control function, and then add a voice reminder module, and judge the ignition switch signal and the handbrake position signal by the analog ignition switch circuit and the handbrake position sensor respectively, and then communicate with ECU communicates, and then determines whether to send a signal to the voice alarm module to realize the reminder function of forgetting to pull the handbrake or the situation that the handbrake is not in place. It is easy to implement and has obvious advantages, which can greatly improve the safety of the vehicle.

The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For a person of ordinary skill in the technical field to which the utility model belongs, without departing from the concept of the utility model, some simple deduction or substitutions can also be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (1)

1. automobile parking braking is anti-forgets a phonetic warning system, it is characterized in that: described system comprises signal gathering unit, electronic control unit, voice reminder unit; Described signal gathering unit is comprised of parking brake position sensor circuit and simulation igniting switch circuit; Described parking brake position sensor circuit is used for judging parking brake position and exports parking brake position electric signal; Described simulation igniting switch circuit judges whether driving engine puts the flame-out alarm electric signal of the output engine of fighting; Described electronic control unit receives described parking brake position electric signal, judge the position of whether moving to of parking brake, if parking brake does not draw or does not move to position, electronic control unit produces the parking brake electric signal that do not put in place, and carries out exporting a warning signal after logic operation with described engine off alarm electric signal; Described electronic control unit comprises a STC12C5A60S2 chip; Described voice reminder unit sends phonic warning prompting according to described warning signal, and described voice reminder unit comprises audio alert loudspeaker, recording microphone wind.