JPH0215832B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a speed reporting device for a vehicle that generates a sound in a vehicle interior corresponding to the traveling speed of the vehicle.

[Conventional technology]

Conventionally, this type of device was disclosed in Japanese Patent Application Laid-Open No. 49-48366.
There is an ``audio speedometer'' in the publication, which generates a sound that indicates the vehicle speed at that time every certain distance traveled.

[Problem to be solved by the invention]

However, as described above, this system notifies the current vehicle speed every certain distance traveled, so when the vehicle is traveling at high speed, the vehicle speed notification becomes frequent and the warning effect for the driver becomes high. When driving at medium to low speeds with large speed fluctuations, such as when driving in a city, the speed of the vehicle may temporarily increase, and the speed notification is not always instantaneous, meaning there is no warning effect for the driver. There's a problem.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a speed reporting device for a vehicle that can notify a driver of the vehicle speed at an appropriate timing depending on the driving situation of the vehicle, for example, even when driving in a city. With the goal.

[Means to solve the problem]

In order to achieve the above object, the present invention, as shown in the block diagram of FIG. Based on the vehicle speed signal,
A speed reporting device for a vehicle, comprising a sound generating means for generating a sound corresponding to the traveling speed of the vehicle, further comprising a setting means for setting a timing at which the sound is generated from the sound generating means as a timing setting value; and a first control means for operating the sound generating means each time the count value by the counting means matches the timing setting value set by the setting means. and, based on the vehicle speed signal from the vehicle speed detection means,
a second control means that determines that the speed fluctuation of the vehicle has exceeded a predetermined level and operates the sound generating means every time this determination is made; The apparatus is characterized by comprising a reset means for resetting the count value to the predetermined initial value during the counting operation of the means.

[Action and effect]

With the above configuration, the sound generation operation corresponding to the vehicle speed from the sound generation means is allowed according to the determinations made by the first and second control means.

The first control means determines that the count value from the counting means matches the timing setting value from the setting means;
The sound generating means is activated every time this determination is made.

On the other hand, the second control means determines whether the speed fluctuation of the vehicle has exceeded a predetermined level based on the vehicle speed signal from the vehicle speed detection means, and every time this determination is made, the second control means makes a sound. The generating means is activated.

Further, in accordance with the determination by the second control means, the reset means is activated, and the count value in the counting operation of the counting means is reset to its predetermined initial value.

That is, by the operation of the first and second control means, the sound generation means generates a sound according to the vehicle speed, and the timing of the operation of the sound generation means by the first control means is determined by the count, which is a parameter thereof. The counting operation of the means is controlled by resetting the count value to its predetermined initial value.

Therefore, a speed notification is made in response to a count value as the vehicle travels, and an audio speed notification is also made in response to vehicle speed fluctuations when the vehicle speed fluctuation exceeds a predetermined level. Even when the speed of the vehicle changes instantaneously, such as when the vehicle is running, the speed can be reported immediately. Furthermore, when speed notifications are made in accordance with vehicle speed fluctuations, the count value that is counted as the vehicle travels is reset to the initial value, which unnecessarily increases the number of speed notifications and causes discomfort to the driver. Not at all.

As described above, according to the present invention, there is an excellent effect that the vehicle speed can be notified to the driver at an appropriate timing depending on the driving situation of the vehicle, for example, even when driving in a city.

〔Example〕

The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 is an overall configuration diagram showing one embodiment.

In Fig. 1, numeral 1 is a vehicle speed sensor that detects the running speed of the vehicle.It detects the rotation of a rotating gear made of magnetic material that is linked to the rotation of the wheels using an electromagnetic pickup. This pulse is generated as a vehicle speed signal. 2 is a setting device that sets the timing setting value (multi-step unit distance setting value, unit time setting value) of the timing at which the vehicle's traveling speed is generated by sound, and the OFF mode and AUTO mode.
Unit distance setting key, 10sec, 15sec, 20sec,
Unit time setting key by 25sec, OFF mode
Equipped with an operation section using the OFF key, AUTO key for AUTO mode, and SET key for the set switch.
When any numerical value of the unit distance setting keys is pressed, the numerical value of that distance is digitally displayed on the display section, and when the SET key is pressed thereafter, a setting including information for that numerical value and information indicating the distance mode is performed. A signal is generated, and when one of the unit time setting keys is pressed, the value of that time is digitally displayed on the display, and then the SET
When a key is pressed, a setting signal containing information on the numerical value and an activation signal for activating the timer circuit 3 are generated, and when the SET key is pressed after the OFF key or AUTO key is pressed, a setting signal containing the information is generated. is generated. Note that when the unit distance setting key and unit time setting key are both pressed, the setting signal of the one turned on later is generated (after the SET key is turned on), and the unit distance setting key or unit time setting key and AUTO key are both pressed. When turned on, a setting signal including both information is generated (after the SET key is turned on), and when power is supplied to the setting device 2, an OFF mode setting signal is generated. 3 is a timer circuit, which operates the timer in response to an activation signal from the setting device 2 when the unit time setting key is pressed, generates a timer signal every time a 5 second time is counted, and when it receives a set signal from the outside. This resets the count value.

4 is a microcomputer that executes software digital arithmetic processing according to a predetermined control program, and is connected to a crystal resonator 5 of several MHz and receives power from an on-board battery.
It is activated by receiving a stabilized voltage from a stabilized power supply circuit (not shown) that generates a stabilized voltage of 5V. Through the operation of this microcomputer 4, it receives a vehicle speed signal from the vehicle speed sensor 1, a setting signal from the setting device 2, a timer signal from the timer circuit 3, and various signals from various detection sensors (not shown). It executes arithmetic processing and generates a voice command signal for audibly indicating the vehicle speed and a display command signal for various displays.

This microcomputer 4 includes a read-only memory (ROM) that stores a control program that defines arithmetic procedures, and a central processing unit (CPU) that sequentially reads out the control program from this ROM and executes the corresponding arithmetic processing. , a memory (RAM) that temporarily stores various data related to the arithmetic processing of the CPU and allows the data to be read by the CPU, and a crystal oscillator 5 to generate reference clock pulses for the various arithmetic operations mentioned above. The vehicle comprises a clock generator, a distance integration counter for counting pulses from the vehicle speed sensor 1, and a counter for counting clock pulses from the clock generator from the rising edge of the pulse from the vehicle speed sensor 1 to the rising edge of the next pulse. The main parts are a vehicle speed calculation circuit that calculates the vehicle speed based on the vehicle speed, and an input/output (I/O) circuit that adjusts the input and output of the various signals mentioned above.

Reference numeral 6 denotes a digital voice synthesizer, which is equipped with a voice data ROM in which voice data for generating voice is stored in advance in each predetermined area, and which generates voice in a predetermined area corresponding to the voice command signal sent from the microcomputer 4. It sequentially synthesizes data into speech and sends out an audio signal. It uses speech synthesis using the PARCOR method, and when the speech synthesis is finished, an interrupt signal is sent to the interrupt (INT) 1 terminal of the microcomputer 4. are doing. 7 is car radio
A car stereo main body; 8 is a mixer for mixing the audio signal from the car radio/car stereo main body 7 and the audio signal from the audio synthesizer 6; 9 is an amplifier;
10 is a speaker. With the above configuration, when audio signals are generated simultaneously from the car radio/car stereo body 7 and the audio synthesizer 6, both audio signals are generated from the speaker 10 via the mixer 8 and the amplifier 9.

In the above configuration, its operation is shown in FIGS. 2 to 4.
This will be explained with reference to the calculation flowchart shown in the figure. This second
The figure is a calculation flowchart showing a part of the calculation processing of the main routine of the microcomputer 4, FIG. 3 is a calculation flowchart showing the interrupt calculation processing based on the interrupt signal from the speech synthesizer 6, and FIG. 3 is a calculation flowchart showing interrupt calculation processing based on timer signals. Note that the interrupt arithmetic processing shown in FIG. 3 is executed preferentially over the interrupt arithmetic processing shown in FIG. 4.

Now, in an automobile equipped with the components 1 to 10 shown in FIG. 1, by turning on the key switch at the start of operation, power is supplied from the on-vehicle battery and the various electrical systems are put into operation. The vehicle speed sensor 1 generates a vehicle speed signal, and the setting device 2 generates an OFF mode setting signal.
Then, in the microcomputer 4, its registers, counters, latches, etc. are set to initial states necessary for starting arithmetic processing. In order to set this initial state, N
This includes operations such as K = 0 for designated address K, K = Ko for designated address K, T = 0 for timer data T, and So = 0 for old vehicle speed So. After this initial setting, the program proceeds to a repetitive calculation in which the calculation processing of the main routine is repeated.

In the repeated calculations of this main routine, when the OFF mode determination step 201 in the routine shown in FIG. Since the mode setting signal has been generated, the determination becomes YES, and one calculation process of the routine shown in FIG. 2 is completed. In addition to the arithmetic processing of the routine shown in Figure 2, the arithmetic processing of a routine for displaying the remaining fuel amount, fuel efficiency, and cruising distance is executed, and the arithmetic processing of the main routine by these routines is performed at a cycle of several hundred milliseconds. Execute repeatedly.

Thereafter, in order to report the vehicle speed by voice, for example, when the 200m key is pressed and then the SET key is pressed, the setting device 2 generates a setting signal including information for 200m and information indicating the distance mode. Therefore, when the OFF mode determination step 201 in FIG. 2 is reached, the determination becomes NO because the OFF mode setting signal is not generated from the setting device 2.
Proceeding to distance mode determination step 202, the determination becomes YES because a setting signal including distance mode information is generated from the setting device 2, and the process proceeds to setting distance reading step 203, where the setting signal from the setting device 2 is 200 m. The set distance Ds is read out, and the process advances to a measured distance input step 204, where the measured distance D is input from the distance integration counter in the microcomputer 4.
At this time, if the measured distance D is less than 200 m, the determination in the next distance determination step 205 will be NO. Then, the process proceeds to AUTO mode determination step 211, where the determination becomes NO because no AUTO mode setting signal is generated from the setter 2, and one calculation process of the routine shown in FIG. 2 is completed.

As the vehicle travels, the count value of the distance integration counter increases, and the value of the measured distance D input at the measured distance input step 204 also increases.
When the input measurement distance D reaches the value of 200 m, the judgment in the distance judgment step 205 becomes YES, and the process proceeds to the distance reset step 206, where the measurement distance D, which is the count value of the distance integration counter, is set to D=
It is reset to 0 and proceeds to vehicle speed input step 207.
In this vehicle speed input step 207, the vehicle speed calculation circuit in the microcomputer 4 is controlled to input the vehicle speed sensor 1.
The number of clock pulses between the rising edge of one pulse and the rising edge of the next pulse is input as vehicle speed S. Then, the process advances to the number of times determination step 208, and since the number of times data N is set to 0 in the initial setting, the determination becomes YES, and the process advances to the voice designation step 209. In this audio designation step 209, in order to generate audio for the vehicle speed S input in the vehicle speed input step 207 in a divided manner, the starting address of a predetermined area of the audio data ROM of the audio synthesizer 6 is assigned to the divided audio. Set successive addresses starting from the Ko address, set the number of set addresses in the number data N, and then synthesize a voice command signal that specifies the contents of the Ko address, that is, the start address of a predetermined area of the audio data ROM. Occurs in vessel 6. For example, the vehicle speed S input at vehicle speed input step 207 is 43 km/h.
If the value corresponds to , in order to generate the voice "Jiseok Yong Jiyu San Kilometer", each of "Jiseok", "Yon", "Jiyu", "San", and "Kilometer" in the audio data ROM is Set the first address of the audio data area to No address, Ko
+1 address, Ko+2 address, Ko+3 address, Ko+4
The address is set in sequence, the number of times data N is set to 5, which is the number of the address, and a voice command signal indicating the content of address Ko, that is, the first address of the voice data area of "Jiseok" is sent to the voice synthesizer 6. . As a result, the speech synthesizer 6 starts synthesizing the speech of "Jiseoku".

In the routine shown in Figure 2, the memory step is
Proceed to 210 and memorize the vehicle speed S as the old vehicle speed So.
Finish the calculation process. Then, when the measured distance input step 204 in the routine of FIG. 2 is reached again after going through other routines, the measured distance D input is a value close to 0, so the next distance determination step is started.
The determination in step 205 becomes NO, and the one calculation process is completed via AUTO mode determination step 211.
While repeating the arithmetic processing of the main routine including the routine shown in FIG. The process is temporarily interrupted and the process proceeds to the interrupt calculation routine shown in FIG. In this interrupt calculation routine, the interrupt calculation process is started at the first interrupt start step 301,
Proceeding to subtraction step 302, 1 is subtracted from count data N (N=N-1=5-1=4), and proceeding to count determination step 303, since count data N is 4, the determination becomes NO. , proceeds to addition step 304 and updates the designated address K by 1 (K=K+1=
Ko+1) and proceed to data sending step 305.
A voice command signal indicating the content of address Ko+1, that is, the start address of the voice data area of "Yon" is sent to the voice synthesizer 6, and the process proceeds to return step 307, where the processing returns to the previously interrupted main routine arithmetic processing. As a result, the speech synthesizer 6 starts synthesizing the speech of "Yon".

Thereafter, every time an interrupt signal is generated from the speech synthesizer 6, the interrupt calculation process shown in FIG. A voice command signal indicating the start address of the voice data area is sent to the voice synthesizer 6.
Sequentially.

When the voice synthesis is all completed and the interrupt calculation routine shown in FIG. 3 is reached, the number data N updated in the subtraction step 302 becomes 0, and the next number determination step 303 makes a determination of YES. The program proceeds to address setting step 306 to set the designated address K to Ko, and then proceeds to return step 307 to return to the previously suspended arithmetic processing of the main routine.

After that, every time the traveling distance reaches 200m, the vehicle speed at that time is calculated by the same calculation process as above, and the speaker 1
Generate sound from 0.

In addition to the 200m key, there is a 150m key, a 100m key,
Similarly, when the 50m key is turned on, the speaker 10 generates a sound indicating the vehicle speed at that time every time the travel distance is reached.

Also, input the 200m key and AUTO key and then
When the SET key is pressed, when the AUTO mode determination step 211 is reached via the distance determination step 205 in the routine shown in FIG. Proceed to step 213 and read out the old vehicle speed So. At this time, if there is no difference of 5 km/h or more between the vehicle speed S and the old vehicle speed So, the determination becomes NO and one calculation process of the routine in Figure 2 is completed, but if the difference is 5 km/h or more, If there is a difference, the judgment
When the result is YES, the program proceeds to a distance reset step 215, where the measured distance D is reset to D=0, and a time reset step 216, where the timer data T is reset to T=0 and a reset signal is sent to the timer circuit 3. The process advances to step 217 for determining the number of times. At this time, if all the voice synthesis by the voice synthesizer 6 has been completed and the number data N is 0, the determination at the number of times determination step 217 becomes YES, and the process advances to the voice designation step 218. In this voice specification step 218,
In order to generate the voice "Yonjiyuuhachikm" for the vehicle speed S input in the vehicle speed input step 212, if it is "〇〇km", for example 48km/h,
“Yon”, “Jiyu” in the audio data ROM,
The starting addresses of the audio data areas for “Hachi” and “Kiro” are Ko address, Ko+1 address, Ko+2 address,
The address Ko+3 is set in sequence, the number of times data N is set to 4, which is the number of the address, and a voice command signal indicating the contents of address Ko, that is, the first address of the voice data area of "Yon" is sent to the voice synthesizer 6. do.
Then, the process proceeds to storage step 219, where the vehicle speed S is stored as the old vehicle speed So, and one calculation process of the routine shown in FIG. 2 is completed.

Then, the Ko selected in voice command step 218
By sequentially executing the interrupt arithmetic processing shown in FIG. 3 on the contents of the address Ko+3, the voice synthesizer 6 synthesizes the voice, and the speaker 10 outputs "Yon".
Generates the sound "Jiyu Hachi Kiro".

Thereafter, each time the traveling distance reaches 200 m or the vehicle speed changes by 5 km/h or more, the vehicle speed at that time is audibly emitted from the speaker 10.

On the other hand, turn on the 10sec key on setting device 2 and then
When the SET key is pressed, the setting device 2 generates a setting signal for information for 10 seconds, and upon receiving the activation signal from the setting device 2, the timer circuit 3 starts timer operation. When the timer circuit 3 generates a timer signal counting five seconds, the microcomputer 4 temporarily interrupts the main routine arithmetic processing and executes the arithmetic processing of the interrupt arithmetic routine shown in FIG. In this interrupt calculation routine, the interrupt calculation process is started from the second interrupt start step 401, and the process proceeds to the read step 402 where the set time Ts of 10 seconds is determined by the setting signal from the setting device 2.
is read out and proceeds to addition step 403, where the settings (initial settings or time reset step) are
The timer data T is updated by adding a value equivalent to a time of 5 seconds to T = 0 (set by 216), and the timer data T is updated to a value equivalent to a time of 5 seconds. Therefore, the determination becomes NO, and the process proceeds to return step 409 to return to the arithmetic processing of the main routine that was temporarily interrupted. Then, the timer circuit 3 counts that another 5 seconds have elapsed, and when the interrupt calculation routine of FIG. 4 is reached again, the addition step is started.
The timer data T updated in 403 becomes a value corresponding to a time of 10 seconds. Therefore, the next time determination step 404 makes a YES determination, the program proceeds to a timer reset step 405, resets the timer data T to 0, proceeds to a vehicle speed input step 406, inputs the vehicle speed S, and proceeds to a voice command step 407. Proceed to perform the same calculation process as the voice command step 209 in FIG.
The program proceeds to a storage step 408 to store the vehicle speed S as the old vehicle speed So, and then proceeds to a return step 409 to return to the previously suspended arithmetic processing of the main routine. Then, the voice selected in the voice specification step 407 is
By executing the arithmetic processing of the interrupt arithmetic routine shown in FIG. 3 on the content from the Ko address, the speaker 10 generates the sound "Jiseku〇〇〇〇〇km".

Thereafter, every time 10 seconds elapse, a sound indicating the vehicle speed at that time is generated from the speaker 10.

Similarly, when the 15sec key, 20sec key, or 25sec key is pressed, the speaker 10 generates a sound indicating the vehicle speed at that time each time the time elapses.

Also, when the unit time setting key and the AUTO key are pressed and then the SET key is pressed, the speaker 10 generates a sound indicating the vehicle speed at that time every time the set time elapses or every time the vehicle speed changes by 5 km/h or more. .

In the above embodiment, the setting device 2 was used to set one timing setting value from among predetermined stepwise timing setting values, but from 0 to
A function may be added that allows the driver to freely set the timing setting value desired by the driver using a keyboard using numbers up to 9, or a volume type setting device that is easy for the driver to operate may be used.

Further, although the above embodiment uses the microcomputer 4, a hard logic configuration using an electronic circuit may also be used.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
FIG. 2 is a calculation flowchart showing part of the calculation processing of the main routine of the microcomputer in FIG.
FIG. 3 is a calculation flowchart showing interrupt calculation processing based on an interrupt signal from a speech synthesizer, FIG. 4 is a calculation flowchart showing interrupt calculation processing based on a timer signal from a timer circuit, and FIG. FIG. 1... Vehicle speed sensor, 2... Setting device, 3... Timer circuit, 4... Microcomputer, 6... Voice synthesizer, 10... Speaker.

Claims (1)

[Claims] 1. Vehicle speed detection means for detecting the running speed of the vehicle and generating a vehicle speed signal according to this speed; Based on the vehicle speed signal from this vehicle speed detection means,
A speed reporting device for a vehicle, comprising a sound generating means for generating a sound corresponding to the traveling speed of the vehicle, further comprising a setting means for setting a timing at which the sound is generated from the sound generating means as a timing setting value; and a first control means for operating the sound generating means each time the count value by the counting means matches the timing setting value set by the setting means. and, based on the vehicle speed signal from the vehicle speed detection means,
a second control means that determines that the speed fluctuation of the vehicle has exceeded a predetermined level and operates the sound generating means every time this determination is made; A speed reporting device for a vehicle, comprising: a reset means for resetting the count value to the predetermined initial value in the counting operation of the means.