阅读说明：本技术 语音报警电路、语音报警器以及语音报警系统 (Voice alarm circuit, voice alarm and voice alarm system ) 是由 陈振华 叶挺展 吴优 贾年红 于 2020-06-23 设计创作，主要内容包括：本发明提供一种语音报警电路、语音报警器以及语音报警系统,其中,语音报警电路包括：控制模块以及语音播报模块；控制模块包括：信号识别单元以及逻辑信号触发单元,信号识别单元识别转向信号、倒车信号以及车灯信号,逻辑信号触发单元根据识别的信号,触发语音播报模块按照对应模式进行工作；语音播报模块包括：语音芯片、功率放大单元以及扬声器,语音芯片接收逻辑信号触发单元发送的触发信号,并经功率放大单元发送语音信号至扬声器。本发明的语音报警电路能够根据车速情况,选择性按照低速报警模式进行工作,同时可区分白天和黑夜,并按照对应的模式进行工作。播报时,采用蜂鸣和语音结合的方式进行报警,具有更好的提示报警效果。(The invention provides a voice alarm circuit, a voice alarm and a voice alarm system, wherein the voice alarm circuit comprises: the voice broadcasting system comprises a control module and a voice broadcasting module; the control module includes: the system comprises a signal identification unit and a logic signal trigger unit, wherein the signal identification unit identifies a steering signal, a reversing signal and a car light signal, and the logic signal trigger unit triggers a voice broadcast module to work according to a corresponding mode according to the identified signals; the voice broadcast module includes: the voice chip receives the trigger signal sent by the logic signal trigger unit and sends a voice signal to the loudspeaker through the power amplification unit. The voice alarm circuit can selectively work according to the vehicle speed condition and the low-speed alarm mode, can distinguish the day and the night, and works according to the corresponding mode. When the alarm is broadcast, the alarm is given by adopting a mode of combining buzzing and voice, and the alarm has better prompt and alarm effects.)

1. A voice alarm circuit, the voice alarm circuit comprising: the voice broadcasting system comprises a control module and a voice broadcasting module;

the control module includes: the voice broadcasting system comprises a signal identification unit and a logic signal triggering unit, wherein the signal identification unit identifies a steering signal, a reversing signal and a car light signal, and the logic signal triggering unit triggers the voice broadcasting module to work according to a corresponding mode according to the identified signals;

the voice broadcast module includes: the voice chip receives the trigger signal sent by the logic signal trigger unit and sends a voice signal to the loudspeaker through the power amplification unit.

2. The voice alarm circuit according to claim 1, wherein the signal recognition unit further recognizes a vehicle speed signal of the vehicle, and the logic signal triggering unit triggers the voice broadcast module to operate according to the recognized vehicle speed signal.

3. The voice alarm circuit according to claim 2, wherein the control module has a preset vehicle speed signal, and when the vehicle speed signal recognized by the signal recognition unit is smaller than the preset vehicle speed signal, the logic signal trigger unit does not send a trigger signal; when the recognized vehicle speed signal is greater than the preset vehicle speed signal, the logic signal triggering unit triggers the voice broadcasting module to work.

4. The voice alarm circuit of claim 1, wherein the logic signal triggering unit triggers the voice broadcast module to alarm by first beeping and then voice according to the identified steering signal and the identified reversing signal.

5. The voice alarm circuit according to claim 1 or 4, wherein the logic signal triggering unit operates the voice broadcasting module according to a day operation mode or a night operation mode according to the recognized car light signal.

6. The audio alert circuit of claim 5, wherein in the daytime mode of operation, the sound pressure level of the speaker is in a range of 80 ± 5 dB; in the night work mode, the range of the sound pressure level of the loudspeaker is 70 +/-5 dB.

7. The voice alarm circuit according to any one of claims 1 to 4, wherein the control module further comprises a PWM switching power supply, and the PWM switching power supply is electrically connected with the signal recognition unit, the logic signal trigger unit and the voice broadcast module respectively.

8. An audible alarm, characterized in that the audible alarm comprises: a housing and the audio alert circuit of any of claims 1 to 7 integrated into the housing;

a sealing structure is arranged between a loudspeaker of the voice alarm circuit and the shell, a circuit board of the voice alarm circuit is sealed by electronic pouring sealant, and a contact pin of the circuit board extends out of the shell and extends into an interface of the shell.

9. The audible alarm of claim 8, wherein said housing comprises: the loudspeaker comprises an outer cover plate, an inner cover plate and a shell, wherein the outer cover plate is buckled on an opening of the shell, and an assembly space of the loudspeaker is limited between the inner cover plate and the outer cover plate.

10. A voice alarm system, characterized in that the voice alarm system comprises: an audio alarm as claimed in claim 8 or 9 and a plurality of feedback devices for transmitting the steering signal, reverse signal and light signal of the vehicle.

Technical Field

The invention relates to the technical field of safe driving, in particular to a voice alarm and a voice alarm system.

Background

The voice alarm is mainly used for giving out warning sounds in the driving process of an automobile to remind vehicles and pedestrians of paying attention to safety. When a truck, particularly a common construction engineering truck, a muck truck, a cement mixer truck, a dump truck, a dangerous goods truck, a trailer and the like, runs all the time, the truck is tall, long and has a large turning radius; the driver has a vision blind area to a certain extent, which is very easy to cause the safety traffic accidents among vehicles, pedestrians and non-motor vehicles.

In recent years, with the high-speed development of the automobile industry, the reservation quantity of commercial vehicles is more and more; but also presents a few challenges to road safety. Particularly, on urban roads, phenomena of pedestrians, vehicles mixed traveling, non-motor vehicle lane rush and the like are common; the safety situation is increasingly severe. The traffic accidents and casualty events caused by turning right and backing up buses, coaches and large logistics trucks running in urban areas or suburbs are also increased obviously. Therefore, the associated vehicle must be equipped with a voice alarm.

However, the existing voice alarm only has a voice broadcasting function, and the function is single, so that the existing voice alarm cannot adapt to actual use requirements. In addition, the existing voice alarm also has the problems of inconvenient installation and poor waterproofness. Therefore, it is necessary to provide a further solution to the above problems.

Disclosure of Invention

The invention aims to provide a voice alarm and a voice alarm system, which aim to overcome the defects in the prior art.

In order to achieve the above object, the present invention provides a voice alarm circuit, which includes: the voice broadcasting system comprises a control module and a voice broadcasting module;

the control module includes: the voice broadcasting system comprises a signal identification unit and a logic signal triggering unit, wherein the signal identification unit identifies a steering signal, a reversing signal and a car light signal, and the logic signal triggering unit triggers the voice broadcasting module to work according to a corresponding mode according to the identified signals;

the voice broadcast module includes: the voice chip receives the trigger signal sent by the logic signal trigger unit and sends a voice signal to the loudspeaker through the power amplification unit.

As an improvement of the voice alarm circuit, the signal identification unit also identifies a vehicle speed signal of a vehicle, and the logic signal trigger unit triggers the voice broadcast module to work according to the identified vehicle speed signal.

As an improvement of the voice alarm circuit, the control module is provided with a preset vehicle speed signal, and the logic signal trigger unit does not send a trigger signal when the vehicle speed signal identified by the signal identification unit is smaller than the preset vehicle speed signal; when the recognized vehicle speed signal is greater than the preset vehicle speed signal, the logic signal triggering unit triggers the voice broadcasting module to work.

As an improvement of the voice alarm circuit, the logic signal trigger unit triggers the voice broadcast module to alarm according to the first buzzing alarm and then voice alarm according to the recognized steering signal and the reversing signal.

As an improvement of the voice alarm circuit, the logic signal trigger unit works according to a daytime working mode or a night working mode according to the recognized car lamp signal and the voice broadcasting module.

As an improvement of the voice alarm circuit, in the daytime working mode, the range of the sound pressure level of the loudspeaker is 80 +/-5 dB; in the night work mode, the range of the sound pressure level of the loudspeaker is 70 +/-5 dB.

As an improvement of the voice alarm circuit, the control module further comprises a PWM (pulse-width modulation) switching power supply, and the PWM switching power supply is respectively and electrically connected with the signal identification unit, the logic signal trigger unit and the voice broadcast module.

In order to achieve the above object, the present invention provides a voice alarm, comprising: the voice alarm circuit is integrated in the shell;

a sealing structure is arranged between a loudspeaker of the voice alarm circuit and the shell, a circuit board of the voice alarm circuit is sealed by electronic pouring sealant, and a contact pin of the circuit board extends out of the shell and extends into an interface of the shell.

As an improvement of the voice alarm of the present invention, the housing includes: the loudspeaker comprises an outer cover plate, an inner cover plate and a shell, wherein the outer cover plate is buckled on an opening of the shell, and an assembly space of the loudspeaker is limited between the inner cover plate and the outer cover plate.

In order to achieve the above object, the present invention provides a voice alarm system, which includes: the voice alarm and a plurality of feedback devices for sending the steering signal, the reversing signal and the lamp signal of the vehicle.

Compared with the prior art, the invention has the beneficial effects that:

(1) the voice alarm circuit can selectively work according to the vehicle speed condition and the low-speed alarm mode, can distinguish the day and the night, and works according to the corresponding mode. When the alarm is broadcast, the alarm is given by adopting a mode of combining buzzing and voice, and the alarm has better prompt and alarm effects.

(2) The voice alarm circuit adopts the working mode of the PWM switching power supply, and has the functions of low heat generation, low power consumption and overvoltage and short-circuit protection.

(3) The voice alarm provided by the invention is provided with the independent contact pin, so that the wire can be saved, and the problem caused by poor riveting of the wire can be avoided.

(4) The voice alarm has double waterproof sealing design, improves the waterproof capability of the product and can meet the waterproof grade of IP 67.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a block diagram of an embodiment of a voice alarm circuit of the present invention;

FIG. 2 is a circuit diagram of an embodiment of the audio alert circuit of the present invention;

FIG. 3 is a schematic exploded perspective view of an embodiment of the audible alarm of the present invention;

fig. 4 is an exploded cross-sectional view of an embodiment of the audible alarm of the present invention.

Detailed Description

The present invention is described in detail below with reference to various embodiments, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should be able to make modifications and substitutions on the functions, methods, or structures of these embodiments without departing from the scope of the present invention.