JPH082321A - Vehicle reverse alarm device - Google Patents

Abstract

PURPOSE:To prevent a vehicle outside alarm sound or the like from becoming hard to be heard due to a vehicle inside alarm signal, in the case of a vehicle reverse alarm device that calls attention to persons inside the vehicle and at the rear part of the vehicle outside when the vehicle reverses (backs). CONSTITUTION:When it is detected that a back gear has been entered, a voice alarm signal and a leading sound to draw attention to vehicle reverse are generated by predetermined frequency in regard to vehicle outside and vehicle inside speakers 41, 42, and after this, preferably, if the vehicle speed indicates the state of stop, the voice alarm signal is outputted only from the vehicle outside speaker 41 without being outputted from the vehicle inside speaker 42, although the leading sound is outputted from the vehicle outside and inside speakers 41 42.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle backward warning device, and more particularly to a vehicle backward warning device for alerting a person behind the vehicle when the vehicle moves backward (back).

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, in such a vehicle reverse warning device, when a transmission (not shown) is put in a back gear (reverse gear), the back gear switch 1 is turned on and the switch 1 The back lamp 2 which is connected in series with is turned on.

At the same time when the switch 1 is turned on, power is supplied to the alarm unit 3 and a buzzer as an alarm device 4 sounds. Alternatively, when the alarm device 4 is a speaker, the speaker synthesized by the alarm unit 3 outputs "back" and sounds a speaker to give an alarm to a person behind the vehicle. Therefore, the alarm device 4 is usually mounted on the rear outside of the vehicle. The speaker at this time is hereinafter referred to as a vehicle exterior speaker.

Further, in order to warn the driver or the like in the vehicle that the vehicle is in the back gear, the alarm device 4 may be mounted in the vehicle. The speaker at this time is hereinafter referred to as an in-vehicle speaker.

In this case, the voice alarm can provide more specific and accurate and easy-to-understand information to the driver than the alarm by the buzzer.

However, since there is usually only one voice synthesis IC (integrated circuit) built in the alarm unit 3, when the back gear switch 1 is ON, for example, "ping-pong, back-up" is performed from the speaker outside the vehicle and the speaker inside the vehicle. I will. be careful. Will be output at the same time.

In this case, this warning may be given to a person behind the outside of the vehicle, but correct information is not provided to the driver or the like inside the vehicle. That is, on a downhill or the like, the vehicle will move forward without moving backward unless the clutch is engaged simply by putting it in the back gear.

[0008] At this time, the correct alarm for the driver in the car is "Ping-pong and back gear are in. ], But this time it becomes an unclear expression for people behind the car.

Therefore, the inventor of the present invention aims to realize a vehicle backward warning device capable of giving an appropriate voice warning to both a person behind the vehicle and a driver inside the vehicle. The following proposal is made in No. 5-270862.

That is, in Japanese Patent Application No. 5-270862, an alarm
When the unit detects that the unit has entered the back gear by the back gear state detecting means, the first voice alarm signal for warning the vehicle to move backward is given to the speaker outside the vehicle, and the second state notifying that the vehicle is ready to move backward. Is given to the speaker in the car.

[0011] With this, it is possible to give a warning to the person behind the vehicle that the vehicle will be backing, so that the person inside the vehicle can be backed. It will only notify that there is a warning and that it is not warning that it is actually retreating, and it issues an appropriate warning to both parties.

[0012]

[Problems to be Solved by the Invention] Japanese Patent Application No. 5-27
In No. 0862 and the like, since the warning signal is continuously generated from the in-vehicle speaker, there is a problem that it is difficult to hear the sound or voice for guidance or warning emitted from the rear part of the vehicle.

Therefore, according to the present invention, in a vehicle retreat warning device for alerting a person inside or outside the vehicle to the rear when the vehicle moves backward (back), an alarm signal inside the vehicle does not make it difficult to hear an alarm sound outside the vehicle. The purpose is to

[0014]

In order to achieve the above object, a vehicle reverse warning device according to the present invention comprises a back gear state detecting means, a vehicle exterior speaker provided at a rear portion of a vehicle, a vehicle interior speaker, and the detecting means. When it detects that the vehicle has entered the back gear, it outputs a heading sound and a voice warning signal for a predetermined number of times to the speakers outside and inside the vehicle to warn the vehicle backwards, and thereafter outputs the heading sound from the speakers outside and inside the vehicle. And an alarm unit for outputting the voice warning signal only from the speaker outside the vehicle.

The alarm unit outputs the heading sound from the outside and inside speakers if the vehicle speed detected by the vehicle speed detecting means is equal to or more than the set value indicating the non-stop state even if the number of times is less than the predetermined number. However, the voice alarm signal can be output only from the speaker outside the vehicle.

Further, the above-mentioned alarm unit switches the sound source for generating the cue sound, the voice synthesis IC for generating the voice alarm signal, and the cue sound and the voice alarm signal corresponding to each speaker. And a means for outputting the result can be included.

[0017]

According to the present invention, when the back gear state detecting means detects that the vehicle has entered the back gear, the alarm unit provides a heading sound and a voice alarm signal at the rear of the vehicle to warn the vehicle from moving backward. It is generated a predetermined number of times (for example, twice) from the speaker outside the vehicle and the speaker inside the vehicle provided inside the vehicle.

However, after the predetermined number of times,
The alarm signal to the speaker outside the vehicle continuously outputs the cue sound and the voice alarm signal, but the alarm signal to the speaker inside the vehicle is in the back gear (preferably if the vehicle speed is less than the set value indicating the stopped state). Only the above cue sound is output, and no voice warning signal is output.

Alternatively, even if the vehicle speed is equal to or less than the predetermined number of times and the vehicle speed is equal to or higher than a set value that is not in a stopped state, the voice warning signal may be disturbed by the running sound of the vehicle. Suspend the output of the voice alarm signal.

After that, the alarm signal to the in-vehicle speaker is set to output only the cue sound, and the alarm signal to the in-vehicle speaker is not output while the voice alarm signal is output to the out-of-vehicle speaker.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the configuration of an embodiment of a vehicle reverse warning device according to the present invention. In the figure, 1 is a back gear switch, 2 is a back lamp, 3 is an alarm unit, and 4 is an alarm unit.
1 is a speaker outside the vehicle, 42 is a speaker inside the vehicle, 5 is a vehicle speed sensor, and 6 is a key switch. The speaker 41 outside the vehicle is attached to the rear portion of the vehicle as described above.

The alarm unit 3 is an MPU.
(Microprocessor unit) 31 and common bus 32
A voice synthesis IC 33 and a cue sound source 34 connected to the MPU 31 via the MPU 31 and an output signal of the voice synthesis IC 33 and a cue sound source 34 are commonly input, and M
Changeover switch SW that performs a switching operation under the control of the PU 31
1 and SW2, and amplifiers A1 and A2 for amplifying the output signals of the changeover switches SW1 and SW2 and giving them to the outside speaker 41 and the inside speaker 42, respectively.

The above-mentioned changeover switches SW1 and SW
The fixed side contacts a and d of 2 are the voice synthesis IC 33.
, And the fixed contacts b and e are commonly connected to the head-on sound source 34. These changeover switches SW1 and SW2 respectively have non-connection side contacts g and h as shown in the drawing.

Further, the movable contact c of the changeover switch SW1
Is connected to the amplifier A1. In addition, the changeover switch S
The movable side contact f of W2 is connected to the amplifier A2.

FIG. 2 shows the MPU 31 in the above embodiment.
The flowchart of the control program executed in FIG. 1 is shown, and the operation of the embodiment of FIG. 1 will be described below with reference to this flowchart.

First, when the driver turns on the key switch 6, the MPU 31 performs the initial setting as usual (step S1). At the same time, the flag F1 is set to "0".
(Step S2), and the output count is also initialized to "0" (step S3).

Further, unless the driver shifts the gear to the back gear position, the above-mentioned steps S2 and S3 are passed through step S4.

On the other hand, when the driver shifts to the back gear position, the back switch 1 as the back gear state detecting means is turned on, the back lamp 2 is turned on, and the process proceeds from step S4 to step S5.

In step S5, since the flag F1 is initially set to "0" in step S2, the process proceeds to step S6 and it is determined whether or not the output count is "0". Also in step S6, as described above, the number of outputs is initially set to "0" in step S3, so that steps S6 to S9 are performed.
Proceed to.

Then, in step S9, the output process of the cue sound is executed. In the cue sound output process, the MPU 31 turns on the cue sound source 34 and controls the changeover switches SW1 and SW2 to switch the movable contacts c and f to the fixed contacts b and e, respectively.

As a result, the cue sound source 34 outputs a cue sound "ping-pong", and the changeover switches SW1 and S
Amplified by amplifiers A1 and A2 via W2,
Further, a speaker 41 outside the vehicle and a speaker 42 inside the vehicle, respectively.
To output the cue sound to the speakers 41 and 42 both inside and outside the vehicle.

Thereafter, a voice alarm output process (step S1)
Perform 0). In this process, the MPU 31 turns on the voice synthesis IC 33 via the common bus 32, and further switches the movable contacts c and f of the changeover switches SW1 and SW2 to the fixed contacts a and d as shown in the figure.

Therefore, the voice warning signal from the voice synthesis IC 33 "backs up. be careful. ] Is sent to the amplifiers A1 and A2 through the changeover switches SW1 and SW2, where they are amplified and output at the outside speaker 41 and the inside speaker 42, respectively.

Therefore, steps S9 and S
As shown in FIG. 10, the head start sound and the voice alarm signal are output from both the outside speaker 41 and the inside speaker 42.

After that, the number of outputs is incremented by "1" (step S11).

If such a back gear position continues, the process proceeds from step S4 to step S5 in the flowchart of FIG. 2 again, but since the flag F1 is still "0", the process proceeds to step S6.

In step S6, since the output count is incremented by "1" in step S11, the process proceeds to step S7, and it is determined whether or not the vehicle speed output from the vehicle speed sensor 5 is higher than the set value.

Since the set value in this case is a value for determining whether or not the vehicle is substantially stopped, if the vehicle is stopped, the process proceeds to step S8.

In step S8, it is determined whether or not the number of times of output exceeds the set number of times. The number of times of setting in this case is, for example, once, and if the head-on sound and voice alarm output processing in steps S9 and S10 has been performed once, the process proceeds from step S8 to step S12, but if not, the process proceeds to step S9. .

Further, in step S7, when the vehicle speed is higher than the set value and the vehicle starts to move, the process proceeds to step S12.

In step S12, the output process of the cue sound is executed as in step S9.

After that, the process proceeds to step S13, and the output process of the voice alarm signal is performed. In this case, the output process is performed only for the speaker outside the vehicle.

That is, in this step S13, M
The PU 31 turns on the voice synthesizing IC 33 and switches the movable side contact c of the changeover switch SW1 to the fixed side contact a as shown in the figure, but switches the movable side contact f of the changeover switch SW2 to the non-connection side contact h.

As a result, the voice warning signal "backs up" from the voice synthesis IC 33. be careful. ] Is amplifier A
1 will be output only from the vehicle exterior speaker 41.

After the cue sound output process and the voice alarm signal output process are performed in this manner, the flag F1 is set to "1" (step S14), and this routine is exited.

Therefore, when the back gear switch 1 is still ON, the process proceeds from step S4 to step S5, but since the flag F1 is "1" this time, steps S5 to S12 and step S13 are executed. It will be continued.

FIG. 3 shows a time chart when the number of times of setting in step S8 is "2", and this time chart shows a case where the vehicle speed in step S7 of FIG. 2 is not taken into consideration. When the gear is shifted to the back position, the movable side contact c of the changeover switch SW1 becomes the fixed contact b side, and the movable side contact f of the changeover switch SW2 is changed to the fixed side contact e so that the outside speaker 41 and the vehicle interior The cue sound is output from the speaker 42 only for a certain time T.

After the elapse of this fixed period of time T, the changeover switches SW1 and SW2 are switched to the contact points a and e, respectively.
A voice alarm signal is output from the vehicle outside speaker 41 and the vehicle inside speaker 42 respectively.

When the cue sound and the voice alarm signal are repeated "3 times" as shown in the figure, the output number exceeds the set number "2" in step S8.
By shifting to step 12 and step S13, the changeover switch SW1 remains the same, but the changeover switch 2 is changed over to the non-connection side contact h, so that the voice signal is not output from the in-vehicle speaker 42.

FIG. 4 is a time chart when the vehicle speed is taken into consideration when the number of times of setting is "2", and when the vehicle speed exceeds the set value (shown by the dotted line) as shown in FIG. The switch 1 continues to operate as it is as in the case of FIG. 3, but the changeover switch SW2 indicates that the vehicle speed exceeds the set value even if the set number of times does not reach "2". In the case shown, the contact point is switched to the non-connection side contact h, and thereafter, the voice alarm signal is output only from the speaker 41 outside the vehicle and the voice alarm signal is not output from the speaker 42 inside the vehicle.

In this time chart, vehicle speed <
Even if the set value is reached, as long as the back gear position is set as described above, F1 = 1 in step S5. Therefore, steps S12 and S13 are repeated to change the switch SW2.
The position of does not change.

[0052]

As described above, according to the vehicle reverse warning device according to the present invention, when the vehicle enters the back gear, the head-on sound and the voice warning the outside and inside speakers to the backward movement of the vehicle. If the warning signal is generated a predetermined number of times and thereafter preferably the vehicle speed indicates a stopped state, the heading sound is output from the outside and inside speakers, but the voice alarm signal is not output from the inside speaker and is output only from the outside speaker. With this configuration, it is possible to obtain the effect of making it easier to hear the sound or voice for guidance or warning emitted from the rear of the vehicle.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a vehicle reverse warning device according to the present invention.

FIG. 2 is a flowchart of a control program executed by the MPU of the vehicle reverse warning device according to the present invention.

FIG. 3 is an operation time chart diagram (1) of the embodiment shown in FIG.

4 is an operation time chart diagram (part 2) of the embodiment shown in FIG.

FIG. 5 is a block diagram showing a conventional example.

[Explanation of symbols]

 1 Back Gear Switch 3 Alarm Unit 31 MPU 33 Voice Synthesis IC 34 Head-On Sound Source SW1, SW2 Changeover Switch 41 Outside Speaker 42 Inside Speaker 5 Vehicle Speed Sensor 6 Key Switch In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (3)

[Claims] 1. A back gear state detection means, a vehicle exterior speaker provided at a rear portion of a vehicle, a vehicle interior speaker, and when the detection means detects that the vehicle is in a back gear, the vehicle exterior and interior vehicle speakers are warned to retreat. An alarm unit for outputting the cue sound and the voice warning signal for a predetermined number of times and thereafter outputting the cue sound from the outside and inside speakers, but outputting the voice warning signal only through the outside speaker. A vehicle reverse warning device characterized in that 2. A vehicle speed detecting means is further provided, and the alarm
If the vehicle speed is equal to or more than the predetermined number of times and the vehicle speed is equal to or higher than a set value indicating a non-stop state, the unit outputs the heading sound from the outside and inside speakers, but outputs the voice alarm signal only from the outside speaker. Claim 1 characterized by the above-mentioned.
The vehicle retreat alarm device according to. 3. The voice synthesizer I, wherein the alarm unit generates the cue sound, and the voice alarm signal.
3. The vehicle reverse warning device according to claim 1, further comprising C and means for switching and outputting the cue sound and the voice alarm signal corresponding to each speaker.