JPH09127147A - Running detecting method for vehicle or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect the running of vehicle, etc., without connection with a vehicle by eliminating a cable required for acquiring a signal related to running detected from the vehicle. SOLUTION: The output of an acceleration sensor 1 mounted on a vehicle is filtered 2 to restrain the frequency range due to idling or the like. As constant vibration continues during the running of a vehicle, the running detection is performed depending on the nature. The means integrates the absolute value 3 of a sensor output fluctuation during a fixed period (summing processing 4), threshold-process it and first performs temporary detection 5. As caught noise is detected in the temporary detection output, cumulative processing 6 is conducted and then threshold processing 6 is conducted to perform final detection 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a running detection system for detecting running of a vehicle from an acceleration component sensed by an acceleration sensor mounted on the running body, and more specifically, to a running body such as a vehicle. The present invention relates to a traveling detection method which is applicable to a device mounted on a vehicle such that the operation of the device is restricted or added while the vehicle is traveling, and which is configured by means not connected to the vehicle.

[0002]

2. Description of the Related Art In a conventional traveling detection system for vehicles of this type, for example, a method of detecting traveling by detecting a parking brake signal 51 or an automatic transmission inhibitor signal 52 as shown in FIG. Alternatively, as shown in FIG. 18, the vehicle speed pulse 5 is detected by the vehicle speed pulse detection processing means 56.
There is a method of detecting traveling by detecting the occurrence of No. 5.
In addition, there is a method of detecting traveling by a logical operation that combines the detection results of the parking brake signal 51, the inhibitor signal 52 of the automatic transmission, and the vehicle speed pulse 55 as shown in FIGS.

Among these, FIGS. 17 and 18 are detection methods having a simple structure in which the number of detection means is one. First, these will be described below. In FIG. 17, if the parking brake is ON or the inhibitor switch of the automatic transmission is parking or neutral, the vehicle is considered to be stopped. Therefore, the operating condition of the conventional traveling detection method is negative in the inverter 53 in the detection processing of FIG. 17, and if the parking brake signal 51 or the inhibitor signal 52 of the automatic transmission is L, H is output,
It is used as a running detection signal. In some in-vehicle devices, the operation of the device is restricted or added while the vehicle is traveling in order to improve the convenience of the user including ensuring safety. May be installed. In that case, when the parking brake signal 51 or the inhibitor signal 52 of the automatic transmission is not connected, it may be better to detect that the vehicle is running. Therefore, the pull-down 54 is provided in the input section of the detection processing means of FIG.
Is provided, it is detected that the vehicle is running when the input is open.

The operating condition of the conventional traveling detection method in FIG. 18 is that the vehicle speed pulse detection processing means 56 detects the connection of the vehicle speed pulse 55 and the occurrence of the vehicle speed pulse 55.
If the connection of the vehicle speed pulse 55 is confirmed and the vehicle speed pulse 55 is generated, the vehicle speed pulse detection processing means 56 outputs L and is inverted to H by the inverter 53 to detect traveling. Further, when the connection of the vehicle speed pulse 55 is confirmed and the next pulse is not detected even after a certain time has elapsed after the pulse was detected by the timer incorporated in the vehicle speed pulse detection processing means 56, the vehicle speed pulse detection processing means 56. Outputs H,
The inverter 53 inverts to L and detects the stop. By the way, similarly to the above, when the vehicle speed pulse 55 is not connected, it is better to detect that the vehicle is running. Therefore, when the input is open, that is, when the connection of the vehicle speed pulse 55 is not confirmed, the vehicle speed pulse detection processing is performed. The means 56 outputs L.

Next, a detection method having a configuration in which the above-mentioned detection means are combined is shown in FIGS. 19 and 20. The description will be given below with reference to these. FIG.
The operating condition of the conventional traveling detection method in 9 is the logical sum 57 of the operating condition of the parking brake 51 and the operating condition of the inhibitor switch 52 of the automatic transmission, and the vehicle speed pulse detection processing means 56 determines that the vehicle speed pulse 55 is generated. The negation 58 of the logical product of the conditions not detected is taken. At this time, a pull-down 54 is provided at the input portions of the parking brake 51 and the inhibitor switch 52 of the automatic transmission, so that the running is detected when the input is open. That is, the parking brake signal 51 and the inhibitor signal 5
Only when at least one of 2 is H and the vehicle speed pulse detection processing means 56 is H, the stop is detected, and in the other cases, the vehicle is detected as running.

The operating conditions of the conventional traveling detection method shown in FIG. 20 include operating conditions of the parking brake 51, operating conditions of the inhibitor switch 52 of the automatic transmission, and vehicle speed pulse detection processing means 56 generating vehicle speed pulses 55. Is taken as the negative 59 of the logical product of the conditions in which is not detected. At this time, a pull-down 54 is provided at the input portions of the parking brake 51 and the inhibitor switch 52 of the automatic transmission, so that the running is detected when the input is open. That is, only when the parking brake signal 51 is H, the inhibitor signal 52 is H, and the vehicle speed pulse detection processing means 56 is H, it is detected that the vehicle is stopped, and in other cases, it is detected that the vehicle is running. In this way, by combining the detection means, it is detected that all the means are running, so that the reliability of running detection is improved.

[0007]

In the conventional traveling detection system as described above, the traveling is detected from the logical sum of a parking brake signal, an inhibitor signal of the automatic transmission, and a vehicle speed signal. Therefore, it is necessary to obtain a vehicle speed signal, an automatic transmission inhibitor signal, and a parking brake signal from inside the vehicle. Therefore, it is necessary to prepare a dedicated cable and connect it to a predetermined terminal inside the vehicle, but because it is connected with a cable that is an obstacle to its existence, it looks bad and the installation location is limited by the length of the cable, and also There is a problem that the user is forced to perform a complicated and difficult connection work. The present invention has been made in view of the above-mentioned conventional problems, and eliminates the cable required for acquisition of a signal related to traveling, which was detected from the vehicle in the related art, and allows traveling without connection to the vehicle. The purpose is to detect.

[0008]

According to a first aspect of the present invention, there is provided a traveling detection system for a vehicle based on an output signal of an acceleration sensor which is mounted on a traveling body and which converts an acceleration component due to traveling of the traveling body into an electric signal. Filtering processing means for extracting a specific frequency component of the acceleration sensor output signal, absolute value processing means for calculating the absolute value of the difference between the output signal of the acceleration processing means and an arbitrary DC value, and the absolute value processing Means for summing the values of the output signals of the means within a certain period and outputting the sum value for each period, and the output signal of the sum processing means is compared with an arbitrary value, and a fixed value is output according to the result. Temporary detection processing means, an accumulation processing means for accumulating output signals of the temporary detection processing means and outputting an accumulated value for each accumulation, and a final detection processing means for comparing an output signal of the accumulation processing means with an arbitrary value. The ingredients To make it in, without performing false detection, in which it is possible to separate detection lines and other equipment of the traveling body such as a vehicle.

According to a second aspect of the present invention, there is provided a traveling detection system for a vehicle, which is equipped on a traveling body and which is based on an output signal of an acceleration sensor for converting an acceleration component due to traveling of the traveling body into an electric signal. Filtering processing means for extracting a specific frequency component, absolute value processing means for calculating the absolute value of the difference between the output signal of the filtering processing means and an arbitrary DC value, and constant output signal of the absolute value processing means Summation processing means for summing the values within the period and outputting the summation value for each period, and difference processing for outputting a temporal variation of the output signal of the summation processing means, having a temporary holding function and a subtraction function Means and the output signal of the difference processing means are compared with an arbitrary value, and a temporary detection processing means for outputting a fixed value according to the result and the output signal of the temporary detection processing means are accumulated. Output Accumulation processing means and final detection processing means for comparing an output signal of the accumulation processing means with an arbitrary value are provided, and erroneous detection is performed by the difference processing instantaneously or due to noise mixed in a short period. In addition, it is possible to detect the traveling without the use of the vehicle and to detect the traveling independently of other equipment such as a vehicle.

According to a third aspect of the present invention, there is provided a vehicle traveling detection system, which is provided on a traveling body, and which is based on an output signal of an acceleration sensor for converting an acceleration component generated by traveling of the traveling body into an electric signal. Two filtering processing means for extracting frequency components in a relatively low frequency band, two absolute value processing means for calculating an absolute value of a difference between an output signal of each of the filtering processing means and an arbitrary DC value,
Comparing the output signals of the two summation processing means with two summation processing means for summing the values of the output signals of the respective absolute value processing means within a certain period and outputting the summation value for each period; A comparison processing unit that outputs the result, a temporary detection unit that outputs a fixed value by the output signal of the comparison processing unit, and an accumulation process that accumulates the output signals of the temporary detection processing unit and outputs the accumulated value for each accumulation. Means and a final detection processing means for comparing an arbitrary value with the output signal of the accumulating processing means, so as to prevent erroneous detection due to a noise signal generated by being manually operated while the traveling is stopped. It is possible to detect traveling and also to detect traveling independently of other equipment of a traveling body such as a vehicle.

According to a fourth aspect of the present invention, there is provided a vehicle traveling detection system which is provided on a traveling body and which is based on an output signal of an acceleration sensor for converting an acceleration component due to traveling of the traveling body into an electric signal. Two filtering processing means for extracting frequency components in a relatively high frequency band, two absolute value processing means for calculating the absolute value of the difference between the output signal of each of the filtering processing means and an arbitrary DC value,
Comparing the output signals of the two summation processing means with two summation processing means for summing the values of the output signals of the respective absolute value processing means within a certain period and outputting the summation value for each period; A comparison processing unit that outputs the result, a temporary detection unit that outputs a fixed value by the output signal of the comparison processing unit, and an accumulation process that accumulates the output signals of the temporary detection processing unit and outputs the accumulated value for each accumulation. Means and a final detection processing means for comparing an arbitrary value with the output signal of the accumulating processing means, to perform traveling detection without erroneous detection due to a noise signal particularly caused by idling while the traveling is stopped. Further, it is possible to detect traveling independently of other equipment such as a vehicle.

According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the absolute value conversion means compares the difference between the input signal for the absolute value conversion processing and an arbitrary DC value for a certain period. However, a DC value correction processing means for correcting and outputting a DC value based on the result is provided, and running detection is performed without erroneous detection due to a detection error due to instrumental error of components such as a sensor. It is possible to detect traveling independently of other equipment such as a vehicle.

According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the temporary detection processing means or the comparison processing means is an input signal to the temporary detection processing means or the comparison processing means. A plurality of arbitrary values are prepared as comparison values with and a decoding processing means for outputting a variable value according to the result obtained by comparing each is provided, and a plurality of comparison values are prepared. Due to
The output of the temporary detection processing means is made variable to give a weight to the data for the final detection, which makes it possible to shorten the detection time according to the running.

According to a seventh aspect of the present invention, in the invention according to any one of the first to sixth aspects, the temporary detection processing means or the comparison processing means is an input signal to the temporary detection processing means or the comparison processing means. And an arbitrary value, an averaging means for calculating an average value of the results of the comparing means within a fixed period, and a predetermined value for a value according to the output signal of the averaging means. In addition, the addition processing means for outputting is provided in the preceding stage of the temporary detection means or the comparison processing means, regardless of the difference in the vehicle or external conditions.
The detection accuracy can be maintained, and the detection time can be shortened.

The invention according to claim 8 is the invention according to any one of claims 1 to 6, wherein the temporary detection processing means or the comparison processing means has a temporary holding function and a subtraction function. Means or a difference processing means for outputting a temporal variation of the input signal to the comparison processing means, and a processing means for comparing an output signal of the difference processing means with an arbitrary value,
The tentative averaging means for calculating an average value of the results of the comparing means within a certain period and the adding processing means for adding a predetermined value to a value according to an output signal of the averaging means and outputting It is provided in the preceding stage of the detection means or the comparison processing means, so that the detection accuracy can be maintained and the detection time can be shortened regardless of the difference in vehicle and external conditions.

According to a ninth aspect of the present invention, in the invention according to any one of the first to eighth aspects, the cumulative processing means temporarily holds a past cumulative value, and the past cumulative value. A processing means for comparing the values, a processing means for comparing the present cumulative value with an arbitrary value, a decoding processing means for outputting a selection signal based on the comparison result of each of the processing means for comparison, and the decoding processing. It is equipped with a selection processing means for switching and outputting an accumulated value and a plurality of arbitrary values by an output selection signal of the means, and running without unstable operation in a transient state from running to stop and from stop to running. It enables detection.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a traveling detection system of the present invention will be described below with reference to the drawings. (Invention of Claim 1) FIG. 1 is a diagram showing an embodiment of the invention. Filtering processing means 2 for extracting a specific frequency component of the output signal of the acceleration sensor 1 is provided in the latter stage of the acceleration sensor 1 for converting the acceleration component into an electric signal, and filtering processing is performed in the latter stage of the filtering processing means 2. The absolute value processing means 3 for calculating the absolute value of the difference between the signal and the arbitrary DC value is provided. In the subsequent stage of the absolute value processing means 3, there is provided a sum processing means 4 for summing the values of the signals which have been subjected to the absolute value processing within a certain period and outputting the sum value for each period. In the subsequent stage, provisional detection processing means 5 is provided which compares the summed signal with an arbitrary value and outputs a fixed value according to the result. In the subsequent stage of the provisional detection processing means 5, there is provided an accumulation processing means 6 for accumulating the signals subjected to the provisional detection processing and outputting an accumulated value for each accumulation.
The final detection processing means 7 for comparing the signal subjected to the cumulative processing with an arbitrary value is provided at the subsequent stage of the cumulative processing means 6.

In this embodiment, it is preferable that the acceleration sensor senses an acceleration component of the vehicle, particularly an acceleration component in the vertical direction of the vehicle, converts the acceleration component into an electric signal corresponding to the acceleration, and outputs the electric signal. . As the acceleration sensor, for example, a piezoelectric element having the characteristics shown in FIG. 2 may be used, but another element may be used as long as it outputs an electric signal according to the acceleration component sensed by the vehicle.

The frequency distribution of the output signal of the acceleration sensor 1 has a characteristic distribution as shown in FIG. 3 during running and idling which is considered to be the main state during stop. Therefore, the filtering processing unit 2 extracts a frequency component during traveling and does not extract the idling frequency component, and uses a frequency characteristic like the filtering processing unit 2 shown in FIG. 3 for the output signal of the acceleration sensor 1. The difference between the value of the output signal of the filtering process 2 as shown in FIG. 4A and the value of the DC component shown in FIG. 4 which is arbitrarily set to be close to the DC component of this output signal is calculated. This is further converted into an absolute value, and the absolute value processing means 3 performs a calculation to obtain a signal as shown in FIG. FIG.
As shown in (C), a built-in timer divides the operation into fixed intervals, and the summation processing means 4 performs an integral operation for adding all the output signal values of the absolute value processing means 3 within the fixed time period.
Do with. At this time, the filtering processing unit 2 previously
Since the frequency component during traveling is largely extracted and the frequency component for idling is suppressed, it can be understood that the result of the summation processing unit 4 generally becomes large during traveling and becomes small at idling.

Therefore, as shown in FIG. 4C, the temporary detection processing means 5 prepares an arbitrary threshold value KS1 for comparing the output signals of the summation processing means 4. However, if the value is compared with the threshold value and it is detected as traveling if it is equal to or more than the threshold value, the acceleration sensed by the vehicle changes from moment to moment during actual traveling, so it may become less than the threshold value in a short time. is there. Also, in actual idling, large acceleration may be sensed when getting on and off, so in a short time,
It may exceed the threshold. However, in many cases, running and stopping are not frequently repeated, and therefore, when the result of comparing the magnitude with the threshold value is continued for a certain period of time, it may be detected as running or stopping.

Therefore, when the output signal of the summation processing means 4 is equal to or higher than the threshold value KS1, the temporary detection processing means 5 tentatively detects that the vehicle is running and outputs a fixed value of + KU.
When the output signal of is less than the threshold value KS1, the stop is provisionally detected and a fixed value of -KD is output (however, KU, KD
Is a positive number). As shown in FIG. 5, the output signals of + KU and −KD of the temporary detection processing means 5 are sequentially accumulated and added by the accumulation processing means 6. At that time, the upper limit value KM is added to the cumulative result.
AX and lower limit value KMIN are set. For example, when -KD continues in the output signal of the temporary detection processing means 5, the cumulative result becomes less than the lower limit value KMIN, but at that time, KMIN is forcibly changed to this value. When + KU continues in the output signal of the temporary detection processing means 5, the cumulative result exceeds the upper limit value KMAX, but at that time, KMAX is forcibly changed to this value.

Since the cumulative result is a cumulative result of the temporary detection, the final detection processing means 7 prepares an arbitrary threshold value KS2 for comparing the cumulative results. In the final detection processing means 7, the threshold value KS2 is compared with the magnitude of the accumulated value. If the threshold value is equal to or larger than the threshold value, it means that the vehicle has continued to run for a certain period of time, so it can be detected that the vehicle is currently running. In addition, the threshold value KS2 is compared with the magnitude of the cumulative value,
If it is less than the threshold value, it means that the vehicle has stopped for a certain period of time, so that it can be detected that the vehicle is currently stopped.

(Invention of Claim 2) FIG. 6 is a diagram showing an embodiment of the present invention, in which a specific output signal of the acceleration sensor 1 is provided after the acceleration sensor 1 for converting an acceleration component into an electric signal. Filtering processing means 2 for extracting frequency components is provided, and absolute value processing means 3 for calculating the absolute value of the difference between the filtered signal and an arbitrary DC value is provided at the subsequent stage of the filtering processing means 2. . In the subsequent stage of the absolute value processing means 3, there is provided a sum processing means 4 for summing the values of the signals which have been subjected to the absolute value processing within a certain period and outputting the sum value for each period. In the latter stage,
A difference processing unit 8 having a temporary holding function and a subtraction function and outputting the difference between the current and immediately preceding signals of the summed signals is provided, and the difference processing unit 8 is followed by a difference processed signal and an arbitrary signal. The provisional detection processing means 5 is provided which compares the values of and outputs a fixed value according to the result. In the subsequent stage of the provisional detection processing means 5, there is provided an accumulation processing means 6 for accumulating the signals subjected to the provisional detection processing and outputting an accumulated value for each accumulation.
In the subsequent stage, a final detection processing means 7 that compares the accumulated signal with an arbitrary value is provided.

Generally, the acceleration sensed by a vehicle is mostly due to engine vibration during idling, and the vibration is almost uniform. On the other hand, when the vehicle is running, there are many cases where the vibration is mainly dependent on the condition of the road surface, and the vibration is not substantially uniform. That is, paying attention to the temporal variation of the result of the summation processing means 4 obtained by the same processing as that of the embodiment of claim 1, it can be seen that it generally increases during traveling and decreases during idling.

Therefore, the output signal of the summation processing means 4 is added to the temporary holding processing means 9 and the subtraction processing means 10 as shown in FIG.
The difference processing means 8 having the above is performed, and the temporal variation of the output signal of the summation processing means 4 is extracted. After that, the temporary detection processing means 5 performs threshold processing with an arbitrary threshold KS1 prepared for comparing the output signals of the difference processing means 8. But,
If the difference processing output is greater than or equal to the threshold value, when it is detected that the vehicle is traveling, the acceleration detected by the vehicle during actual traveling is constantly changing, and the same acceleration continues for a short time and falls below the threshold value. , It may be in the same small fluctuation as when stopped. Further, in actual idling, a large acceleration may be sensed on a one-off basis when getting on or off the vehicle, so that the same fluctuation during running may occur as a result of the short-time threshold or more being exceeded.

Therefore, in many cases, running and stopping are not frequently repeated. Therefore, if the result of comparison between the threshold value and the threshold value is continued or fixed for a certain period of time, it is detected that the vehicle is running or stopped. Good. Therefore, in the provisional detection processing means 5, when the output signal of the difference processing means 8 is equal to or more than the threshold value KS1, it is provisionally detected as running and a fixed value of + KU is output.
When the output signal of the difference processing 8 is less than the threshold value KS1, the stop is provisionally detected and a fixed value of -KD is output (however, K
U and KD are positive numbers). The output signals of the temporary detection processing means 5 of + KU and -KD are sequentially accumulated and added by the accumulation processing means 6 as in the case shown in FIG. At that time, the upper limit KMAX and the lower limit KMIN are provided in the cumulative result. For example, when -KD continues in the output signal of the temporary detection processing means 5, the cumulative result becomes less than the lower limit value KMIN, but at that time, KMIN is forcibly changed to this value. Also, the provisional detection processing means 5
If + KU continues with the output signal of, the cumulative result is the upper limit value KM.
Although it exceeds AX, KMAX is forcibly changed to this value at that time.

Since the cumulative result is a cumulative result of the provisional detection, the final detection processing means 7 prepares an arbitrary threshold value KS2 for comparing the cumulative results. The final detection processing means 7 compares the threshold value KS2 with the magnitude of the accumulated value. If the threshold value KS2 is greater than or equal to the threshold value, it means that the vehicle has continued to run for a certain period of time. Therefore, it is possible to detect that the vehicle is currently running. it can. Further, the threshold value KS2 is compared with the magnitude of the cumulative value. If the threshold value is less than the threshold value, it means that the vehicle has been stopped for a certain period of time. Therefore, it is possible to detect that the vehicle is currently stopped.

(Invention of Claim 3) FIG. 8 is a diagram showing an embodiment of the present invention, in which the output signal of the acceleration sensor 1 is comparatively arranged at the subsequent stage of the acceleration sensor 1 for converting an acceleration component into an electric signal. Filtering processing means 11 and filtering processing means 12 for extracting two frequency components with different low frequencies
The absolute value conversion processing unit 3 for calculating the absolute value of the difference between the filtered signal and the arbitrary DC value is provided at the subsequent stage of each of the filtering processing unit 11 and the filtering processing unit 12. In the subsequent stage of each absolute value processing means 3, there is provided a sum processing means 4 for summing the values of the signals subjected to the absolute value processing within a certain period and outputting the sum value for each period. In the latter part of 4,
The comparison processing means 13 is provided which compares the magnitudes of the signals subjected to the summing processing and outputs the comparison result to the temporary detection processing means 5.

During the stop, it is conceivable to operate manually instead of idling. The hand carry may detect a large acceleration component depending on the operation method, but at that time, it is necessary to prevent it from being detected as running. By the way, during hand carry and traveling, the frequency distribution of the output signal of the acceleration sensor 1 has a characteristic distribution as shown in FIG. As shown in FIG. 9, both hand carry and running are distributed at relatively low frequencies, while hand carry is concentrated at lower frequencies.

Therefore, the filtering processing means 11 extracts a frequency component having a characteristic similar to that of the filtering processing means 11 shown in FIG. 9 in which the frequency component range of the hand carry is enlarged and taken out. The output signal of the acceleration sensor 1 is used. Further, the filtering processing means 12 suppresses the frequency component range of the hand carry and largely extracts the frequency component range during traveling. Extraction of frequency components having characteristics similar to those of the filtering processing means 12 shown in FIG. To do.

After that, as shown in FIG. 4A, filtering processing means 11 and filtering processing means 12 are provided.
The difference between the value of the output signal and the value of the DC component of each output signal close to the DC component of each output signal is calculated, and the difference is further converted into an absolute value to obtain a signal similar to that shown in FIG. 4B. This is performed by the absolute value conversion processing means 3. Further, as shown in FIG. 4 (C), the summation processing means 4 performs an integration operation of dividing the data every fixed period and adding all the output signal values of the absolute value processing means 3 within the fixed period.

Next, the result of the summation processing means 4 after the hand-carrying components are extracted mainly by the filtering processing means 11 and the summation processing after the running components are mainly extracted by the filtering processing means 12 in advance. The comparison processing means 13 compares the results of the means 4. If the result of the summation processing means 4 after band limitation by the filtering processing means 11 is larger, it is generally a hand carry state, so a fixed value indicating stop is output to the provisional detection processing means 5 for filtering processing. When the result of the summation processing means 4 after the band is limited by the means 12 is larger, it means that the vehicle is generally running,
A fixed value that means traveling is output to the temporary detection processing means 5.

Therein, there is provided the above-mentioned claim 1 and claim 2.
In the temporary detection processing means 5 of the embodiment described above, the result of comparing the sum and difference values with the threshold value KS1 is greater than or equal to the threshold value, and when traveling is detected, the comparison processing means 1 is further added.
Similarly to when the output of 3 is running, running is provisionally detected and a fixed value of + KU is output. As a result of comparing the magnitudes of the total sum value and the difference value with the threshold value KS1, it is equal to or more than the threshold value,
Even when it is detected that the vehicle is running, if the output of the comparison processing means 13 is a stop, the stop is provisionally detected and a fixed value of -KD is output. By adding such a process, even when the hand carry is stopped, it is not erroneously detected that the vehicle is running. Therefore, the final detection processing means 7 thereafter can accurately detect the running and stopping of the actual vehicle. It is possible to detect.

(Invention of Claim 4) FIG. 10 is a diagram showing an embodiment of the present invention. In the subsequent stage of the acceleration sensor 1 for converting an acceleration component into an electric signal, a comparative output signal of the acceleration sensor 1 is provided. Filtering processing means 14 and filtering processing means 1 for extracting two frequency components with different high frequencies
5, the absolute value conversion processing means 3 for calculating the absolute value of the difference between the signal subjected to the filtering processing means and an arbitrary DC value is provided at the subsequent stage of each of the filtering processing means 14 and the filtering processing means 15. There is. In the subsequent stage of each absolute value processing means 3, there is provided a sum processing means 4 for summing the values of the signals subjected to the absolute value processing within a certain period and outputting the sum value for each period. A comparison processing unit 16 that compares the magnitudes of the signals subjected to the summation processing and outputs the comparison result to the temporary detection processing unit 5 is provided in the subsequent stage of 4.

In idling, which is considered to be the main state when the vehicle is stopped, in a general vehicle, the frequency distribution of the output signal of the acceleration sensor 1 has a characteristic distribution as shown in FIG. However, as shown in FIG. 11, there are some vehicles that have abnormally large vibrations, such as an acceleration that is larger than an acceleration component that a general vehicle detects while running and that is detected in an idling state. Even when there is a large vibration of the idling of such a vehicle, it is necessary not to detect it as running.

By the way, in idling, regardless of the magnitude of the vibration, as shown in FIGS. 3 and 11, the characteristic distribution has a peak in the high frequency range. Therefore, the filtering processing unit 14 extracts the frequency component not including the peak of the characteristic as in the filtering processing unit 14 in FIG. 11 from the output signal of the addition degree sensor 1. Further, the filtering processing means 15 extracts the frequency component including the peak of the characteristic as in the filtering processing means 15 in FIG. 11 from the output signal of the acceleration sensor 1. After that, the difference between the values of the output signals of the filtering processing means 14 and 15 as shown in FIG. 4A and the values of the DC components arbitrarily set so as to be close to the DC components of the respective output signals. And then
The absolute value conversion processing means 3 performs an operation of converting the signal into an absolute value to obtain a signal as shown in FIG. Further, as shown in FIG. 4 (C), the summation processing means 4 performs an integration operation of dividing the data every fixed period and adding all the output signal values of the absolute value processing means 3 within the fixed period.

Next, the result of the summation processing means 4 after the hand-carrying components are extracted mainly by the filtering processing means 11 and the summation processing after the running components are mainly extracted by the filtering processing means 12 in advance. The comparison processing means 16 compares the result of the means 4. If the result of the summation processing unit 4 after band limitation by the filtering processing unit 14 is larger, it is generally running, so a fixed value indicating running is output to the temporary detection processing unit 5, and the filtering processing unit 5 is output. When the result of the summing processing means 4 after the band is limited by 15 is larger, it is idling in general, so that a fixed value indicating stop is output to the temporary detection processing means 5.

Therefore, in the provisional detection processing means 5 of claims 1 to 3, as a result of comparing the sum total value and the difference value with the threshold value KS1, the threshold value is equal to or more than the threshold value. When the output of the comparison processing means 16 is running, running is provisionally detected and a fixed value of + KU is output. As a result of comparing the magnitudes of the total value and the difference value with the threshold value KS1, the threshold value is equal to or more than the threshold value, and even when the vehicle is detected to run, if the output of the comparison processing means 16 is a stop, the stop is provisionally detected and a fixed value of −KD. Is output. Alternatively, as a result of comparing the sum value and the difference value with the threshold value KS1, the threshold value is equal to or larger than the threshold value, and when traveling is detected, the output of the comparison processing means 16 is traveling and the output of the comparison processing means 13 is traveling. When it is, the vehicle is provisionally detected as running and a fixed value of + KU is output.

As a result of comparing the total value and the difference value with the threshold value KS1, the result is equal to or more than the threshold value, and the output of the comparison processing means 16 or the comparison processing means 13 even when it is detected that the vehicle is traveling.
When the output of is stopped, it is temporarily detected as stopped and -KD
The fixed value is output. By adding such a process, even in a vehicle in which the idling vibration is abnormally large, the vehicle is not tentatively detected as running. Therefore, the final detection processing unit 7 thereafter matches the actual running and stopping of the vehicle. It is possible to detect accurately.

(Invention of Claim 5) FIG. 12 is a diagram showing an embodiment of the present invention, in which the sign of the difference between the filtered signal and the arbitrary DC value in the above-mentioned absolute value conversion processing means 3. As a pre-processing, a DC correction processing means 17 is provided as a pre-processing unit, which compares the values for a certain period by a counter having a built-in timer and corrects and outputs the DC value according to the result. It is conceivable that the output of the acceleration sensor is relatively deviated from the DC value as shown in FIG. 13A or 13B due to the change with time of the acceleration sensor and the variation in the original characteristics. Further, even if the output of the acceleration sensor does not change, for example, when the DC value is generated by resistance voltage division, the DC value may be deviated due to the variation of the resistance and eventually deviated relatively. This deviation causes an adverse effect that the total sum becomes larger when the total sum processing unit 4 in the subsequent stage performs the total sum, as compared with when the total sum processing unit 4 does not shift.

Therefore, it is necessary to constantly monitor the relative relationship between the difference between the filtered signal and the DC value, and if a relative deviation occurs, it is necessary to correct it. Here, the direct current correction processing means 17 is provided as a pre-processing, and the relative deviation is corrected for the direct current value, so that the absolute value conversion processing means 3 is obtained.
Do not adversely affect the subsequent processing. The DC correction processing means 17 first subtracts the DC value from the signal filtered by the subtraction processing means 18, and counts the number of positive and negative signs of the output of the subtraction processing means 18 by a counter 19 having a built-in timer. As a result, when there are many positive numbers and the difference is equal to or more than an arbitrary value provided as a predetermined margin, the correction value generation processing unit 20 outputs a value in the direction of increasing the DC value (FIG. 13B). reference),
The original DC value is corrected by the addition processing means 21 (see FIG. 13C). If there are many negative numbers and the difference is equal to or more than an arbitrary value provided as a predetermined margin, the correction value generation processing means 20 outputs a value in the direction of decreasing the DC value (see FIG. )), The original DC value is corrected by the addition processing means 21 (FIG. 1).
3 (C)). By adding such processing,
It is possible to accurately detect the traveling of the vehicle without being affected by variations in characteristics of the acceleration sensor and the detection process and changes over time.

(Invention of Claim 6) FIG. 14 shows an embodiment of the present invention, in which the output signals of the summation and difference processing means in the temporary detection processing means 5 or the comparison processing means 13 and 16 are A plurality of thresholds for comparison processing (KS1R
1, KS1R2, KS1R3, ... and KS1R1, K
S1R2, KS1R3, ...) is provided, and the comparison processing means 2 is provided at the subsequent stage of the comparison processing means 22.
Decoding processing means (decoder) 23 is provided which decodes a plurality of two output signals and tentatively detects the running, and outputs a value of + KU according to the decoding result. Further, when the decoding processing unit 23 tentatively detects the stop, the decoding processing unit 23 outputs the value of −KD according to the decoding result.

According to the first to fifth embodiments of the present invention, if the total sum value is equal to or greater than the threshold value KS1, it is provisionally detected as running and a fixed value of + KU is output, and if the total sum value is less than the threshold value KS1, stop is determined. It is temporarily detected and outputs a fixed value of -KD. Here, with the above configuration, the sum value is the threshold value K.
If S1 or more, the vehicle is provisionally detected as running, but, for example, thresholds KS1R1 and KS1R2 are further prepared (however, KS1 <KS1R1 <KS1R2). then,
If the sum total value is KS1 or more and less than KS1R1, + KU1 is output, and if it is KS1R1 or more and less than KS1R2, + KU1.
2 is output, and if it is KS1R2 or more, + KU3 is output (however, KU1 <KU2 <KU3). On the contrary, if the total sum value is less than the threshold value KS1, it is provisionally detected as a stop. For example, further threshold values KS1S1 and KS1S2 are prepared (however, KS1>KS1S1> KS1S).
2). At that time, if the sum value is less than KS1 and more than KS1S1, -KD1 is output, if less than KS1S1 and more than KS1S2, -KD2 is output, and if less than KS1S2,
-KD3 is output (however, KD1 <KD2 <KD
3).

This is because, for example, when the running value is temporarily detected when the total value is equal to or more than the threshold value KS1, the case in the vicinity of KS1 and the case of KS1R
In the case of 2 or more, the case of KS1R2 or more is tentatively detected to be traveling, and the weighting is changed for the accumulation processing means 5 in the subsequent stage. By adding such processing, the time required for detection by the final detection processing means 7 can be shortened and the traveling of the vehicle can be detected accurately.

(Invention of Claims 7 and 8) FIG. 15 is a diagram showing an embodiment of these inventions, in which the summation and difference processing are performed in the above-mentioned temporary detection processing means 5 and comparison processing means 13, 16. A signal is monitored by incorporating a timer for a certain period of time, and an idling detection processing means 24 for detecting idling is provided. At the subsequent stage of the idling detection processing means 24, a summation during idling and an average value of signals subjected to difference processing are calculated. The averaging processing means 25 is provided, and the addition processing means 26 for adding a certain margin to the output signal of the averaging processing means 25 is provided at the subsequent stage of the averaging processing means 25.
Is provided, and pre-processing is performed in which the output signal of the addition processing means 26 is used as a threshold value that is different from the threshold value KS1 described so far.

In the first to sixth embodiments of the present invention, the threshold value provided for temporary detection is fixed to KS1. However, in actual traveling, for example, when shifting from idling to traveling, depending on the vehicle. The magnitude of the idling vibration and the magnitude of the vibration during traveling vary, and even if KS1 is set appropriately, a difference in detection time may occur depending on the vehicle. Therefore, instead of fixing the threshold value to KS1, the threshold value is set based on the idling vibration that varies depending on the vehicle. First, two methods for detecting idling will be described below. One is a method in which a comparison process having a built-in timer and having an arbitrary threshold value is provided, and if the sum value is equal to or less than the arbitrary threshold value for a certain period of time, idling is detected. The other is to provide a temporary holding process, a difference output process, and a comparison process with a built-in timer and an arbitrary threshold value.
If the temporal variation of the total value is below an arbitrary threshold for a certain period,
This is a method of detecting idling. In this way, when idling is detected, the averaging processing means 25 calculates the average of the sum total values of the idling state during the fixed period. At this time, since the total sum value varies around the average, the addition processing means 26 adds a certain margin to the new threshold value.

By adding such processing, the time detected by the final detection processing means 7 can be made constant regardless of the magnitude of the vibration of the vehicle, and the traveling of the vehicle can be accurately detected. Further, in the same vehicle, vibrations are different even when the air conditioner is turned on / off, and even at that time, the detection time can be made constant.

(Invention of Claim 9) FIG. 16 is a diagram showing an embodiment of the present invention, in which the above-mentioned accumulation processing means 6 is provided with a temporary holding processing means 27 for delaying the past accumulated value in the subsequent processing. Then, in the latter stage of the temporary holding processing means 27,
A comparison processing unit 28 that compares the past cumulative value and the threshold value KS2 and outputs the result is provided, and a comparison processing unit 29 that compares the current cumulative value and the threshold value KS2 and outputs the result.
Is provided. A decoder 30 that outputs a selection signal according to each comparison result is provided in the subsequent stage of the comparison processing unit 28 and the comparison processing unit 29, and the accumulated value and a plurality of arbitrary values are switched and output in the subsequent stage of the decoder 30 by the selection signal. A selection processing means 31 is provided.

In the embodiments of the inventions of claims 1 to 8, the final detection is the result of comparing the threshold value KS2 with the cumulative value. It may or may not be detected as running, but may be repeated frequently. During actual traveling, in many cases, traveling and stopping are not frequently repeated. Therefore, once the traveling is detected, for example, once the traveling is finally detected, the accumulation processing 6 is performed so as not to detect the stop for a certain period of time. It suffices to have a pseudo hysteresis characteristic described below.

Temporary holding processing means 27, comparison processing means 2
8. From the comparison processing means 29 and the decoder 30, the cumulative value is K
If it is less than S2 and it is detected that the cumulative value after newly accumulating the provisional detection result has changed to KS2 or more, the conversion processing 3
A value of 1 forcibly changes the cumulative value to KMAX.
It is considered that this is when the cumulative value gradually increases, that is, when the vehicle is moving from stop to running, so it is determined to be running for a while. When the vehicle starts traveling, the vibration also gradually increases. Therefore, once the cumulative value exceeds KS2, it is detected as traveling by changing to KMAX, but it is not repeated frequently. Conversely, the cumulative value is K
When it is S2 or more and it is detected that the cumulative value after newly accumulating the temporary detection result has changed to less than KS2, the conversion processing unit 31 forcibly changes the cumulative value to KMIN. It is considered that this is when the cumulative value gradually decreases, that is, when the running state is stopped, so it is determined to be stopped for a while. When the vehicle begins to stop,
Since the vibration also gradually decreases, if the cumulative value once falls below KS2, by changing to KMIN, the stop is detected, but it is not repeated frequently.

By adding such processing, when the final detection processing means 7 detects, in a transitional state from running to stop and from stop to running, running is detected and not accurately repeated without being repeated. The running of the vehicle can be detected.

[0052]

According to the first and second effects of the present invention, it is not necessary to connect the vehicle with a cable because the signal related to the running which has been conventionally detected in the vehicle is not used. Therefore, the limitation of the installation place due to the existence of the cable and the dissatisfaction of the existence of the cable itself are eliminated, and the problem that the user is forced to perform a complicated and difficult connection work is also eliminated. In addition, even if it receives electrical noise such as dive noise generated during detection processing, or large vibration that occurs when a stopped vehicle is getting on or off, loading and unloading of luggage, etc., it is not detected as traveling accidentally, It is possible to accurately detect the traveling of the vehicle. Therefore, since traveling is detected without being connected to the vehicle, if the vehicle is mounted on an in-vehicle device that restricts or adds operations during traveling, the burden on the user is considerably reduced.

Effect of claim 3: In addition to the same effect as claim 1 and claim 2, even when a large vibration generated by a hand carry is received, the vehicle is not accurately detected as traveling, and the vehicle travels accurately. Can be detected. Further, there is an effect that it can be used outside the vehicle.

Effect of claim 4 In addition to the same effect as claim 1 and claim 2, even if a vehicle which generates an abnormally large vibration due to idling, it is accurately detected that the vehicle is traveling without being erroneously detected as traveling. Can be detected. Also,
The effect is that the vehicle to be installed is not selected.

Effect of claim 5: In addition to the effects of claims 1 to 4, it is possible to accurately detect the running of the vehicle without being affected by variations in the characteristics of the acceleration sensor and the detection process and changes over time. . Further, there is an effect that the parts used in the detection process are not selected.

Effect of claim 6 In addition to the effects of claims 1 to 5, the detection time can be shortened and the traveling of the vehicle can be accurately detected. In addition, the burden on the user is further reduced.

Effects of Claims 7 and 8: In addition to the effects of Claims 1 to 6, it is possible to accurately detect the traveling of the vehicle by making the detection time constant regardless of the magnitude of the vibration of the vehicle. . Further, in the same vehicle, vibrations are different even when the air conditioner is turned on / off, and even at that time, the detection time can be made constant. In addition, the effect that any vehicle to be mounted can be selected is obtained.

Effect of Claim 9: In addition to the effects of Claims 1 to 8, in a transitional state from running to stop and from stop to running, the vehicle is accurately detected without being repeatedly detected although it is detected as traveling. Can be detected. In addition, the burden on the user is further reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the invention of claim 1.

FIG. 2 is a diagram showing a characteristic example of an acceleration sensor.

FIG. 3 is a diagram showing a frequency distribution of an acceleration sensor output and a filter characteristic.

FIG. 4 is a diagram for explaining the operation of the detection system of the present invention, showing the transition of the processed signal in the absolute value conversion process (B) and the summation process (C) of the acceleration sensor output (A).

FIG. 5 is a diagram showing a signal of a cumulative processing result in the detection system of the present invention.

FIG. 6 is a block diagram showing a configuration of an embodiment of the invention of claim 2;

7 is a diagram showing a configuration example of difference processing means in FIG.

FIG. 8 is a block diagram showing a configuration of an embodiment of the invention of claim 3;

9 is a diagram showing the frequency distribution of the acceleration sensor output in FIG. 8 and two filter characteristics.

FIG. 10 is a block diagram showing a configuration of an embodiment of the invention of claim 4;

11 is a diagram showing a frequency distribution of the acceleration sensor output in FIG. 10 and two filter characteristics.

FIG. 12 is a block diagram showing a main part of a configuration of an embodiment of the invention of claim 5;

FIG. 13 is a diagram showing a transition of a signal in the DC correction processing in FIG. 12 and an operation state thereof.

FIG. 14 is a block diagram showing a main part of the configuration of the embodiment of the invention of claim 6;

FIG. 15 is a block diagram showing a main part of a configuration of an embodiment of the invention of claims 7 and 8;

FIG. 16 is a block diagram showing a main part of a configuration of an embodiment of the invention of claim 9;

FIG. 17 is a diagram showing a first example of a conventional traveling detection system.

FIG. 18 is a diagram showing a second example of a conventional traveling detection method.

FIG. 19 is a diagram showing a third example of a conventional traveling detection system.

FIG. 20 is a diagram showing a fourth example of a conventional traveling detection system.

[Explanation of symbols]

1 ... Acceleration sensor, 2, 11, 12, 14, 15 ... Filtering processing means, 3 ... Absolute value processing means, 4 ... Sum processing means, 5 ... Temporary detection processing means, 6 ... Accumulation processing means, 7
... final detection processing means, 8 ... difference processing means, 9,27 ... temporary holding processing means, 10,18 ... subtraction processing means, 16,2
2, 28, 29 ... Comparison processing means, 17 ... DC correction processing means, 19 ... Counter, 20 ... Correction value generation processing means, 2
1, 26 ... Addition processing means, 23 ... Decoding processing means (decoder), 24 ... Idling detection processing means, 25 ... Average value processing means, 30 ... Decoder, 31 ... Selection processing means, 51 ... Parking brake signal, 52 ... Inhibitor signal of automatic transmission, 53 ... Inverter, 54 ... Pulldown, 55 ... Vehicle speed pulse, 56 ... Vehicle speed pulse detection processing means, 57 ... Logical sum, 58 ... Negation of logical product, 59 ... Negation of logical product.

Claims (9)

[Claims] 1. In a vehicle traveling detection system based on an output signal of an acceleration sensor which is mounted on a traveling body and which converts an acceleration component due to traveling of the traveling body into an electric signal, a specific frequency component of the acceleration sensor output signal is detected. The filtering processing means for extracting, the absolute value processing means for calculating the absolute value of the difference between the output signal of the filtering processing means and an arbitrary DC value, and the value of the output signal of the absolute value processing means within a certain period A summation processing means for summing and outputting a summation value for each period, a temporary detection processing means for comparing an output signal of the summation processing means with an arbitrary value, and outputting a fixed value according to the result, and the temporary detection processing The present invention is characterized by including an accumulation processing means for accumulating the output signals of the means and outputting an accumulated value for each accumulation, and a final detection processing means for comparing the output signal of the accumulation processing means with an arbitrary value. car Driving detection method for both cars. 2. In a vehicle traveling detection system based on an output signal of an acceleration sensor which is mounted on a traveling body and converts an acceleration component due to traveling of the traveling body into an electric signal, a specific frequency component of the acceleration sensor output signal is determined. The filtering processing means for extracting, the absolute value processing means for calculating the absolute value of the difference between the output signal of the filtering processing means and an arbitrary DC value, and the value of the output signal of the absolute value processing means within a certain period Summing processing means for summing and outputting a summation value for each period; difference processing means having a temporary holding function and a subtraction function for outputting a temporal variation of the output signal of the summing processing means; A temporary detection processing unit that compares an output value of the processing unit with an arbitrary value and outputs a fixed value based on the result, and an accumulation processing unit that accumulates the output signal of the temporary detection processing unit and outputs a cumulative value for each accumulation. When, A traveling detection system for a vehicle or the like, characterized by comprising final detection processing means for comparing an output signal of the accumulation processing means with an arbitrary value. 3. A vehicle travel detection system based on an output signal of an acceleration sensor, which is mounted on a traveling body and converts an acceleration component due to traveling of the traveling body into an electric signal, in a relatively low range of the acceleration sensor output signal. Two filtering processing means for extracting a frequency component, two absolute value processing means for calculating an absolute value of a difference between an output signal of each of the filtering processing means and an arbitrary DC value, and each of the absolute value processing Two summation processing means for summing the values of the output signals of the means within a certain period and outputting the sum value for each period;
Comparison processing means for comparing the output signals of the one summation processing means and outputting the result, temporary detection means for outputting a fixed value by the output signal of the comparison processing means, and accumulating the output signals of the temporary detection processing means However, a traveling detection method for a vehicle or the like is characterized by comprising an accumulation processing means for outputting an accumulated value for each accumulation and a final detection processing means for comparing an output signal of the accumulation processing means with an arbitrary value. . 4. A vehicle traveling detection system based on an output signal of an acceleration sensor, which is mounted on a traveling body and converts an acceleration component due to traveling of the traveling body into an electric signal, in a relatively high range of the acceleration sensor output signal. Two filtering processing means for extracting a frequency component, two absolute value processing means for calculating an absolute value of a difference between an output signal of each of the filtering processing means and an arbitrary DC value, and each of the absolute value processing Two summation processing means for summing the values of the output signals of the means within a certain period and outputting the sum value for each period;
Comparison processing means for comparing the output signals of the one summation processing means and outputting the result, temporary detection means for outputting a fixed value by the output signal of the comparison processing means, and accumulating the output signals of the temporary detection processing means However, a traveling detection method for a vehicle or the like is characterized by comprising an accumulation processing means for outputting an accumulated value for each accumulation and a final detection processing means for comparing an output signal of the accumulation processing means with an arbitrary value. . 5. A DC value correction processing means for comparing the input signal to the absolute value processing with a difference between an arbitrary DC value for a certain period by the absolute value processing means, and correcting and outputting the DC value according to the result. The traveling detection system for a vehicle or the like according to any one of claims 1 to 4, wherein the traveling detection system is provided. 6. The provisional detection processing means or the comparison processing means prepares a plurality of arbitrary values as comparison values with an input signal to the provisional detection processing means or the comparison processing means, and compares each of them. 6. The traveling detection system for a vehicle or the like according to any one of claims 1 to 5, further comprising a decoding processing unit that outputs a value that is variable according to the result obtained by. 7. The processing means for the provisional detection processing means or the comparison processing means to compare an input signal to the provisional detection processing means or the comparison processing means with an arbitrary value, and the result of the comparison processing means. Averaging processing means for calculating an average value within a certain period, and addition processing means for adding a predetermined value to a value corresponding to an output signal of the averaging processing means and outputting the averaging processing means of the temporary detection means or the comparison processing means. The traveling detection system for a vehicle or the like according to any one of claims 1 to 6, wherein the traveling detection system is provided in a front stage. 8. The temporary detection processing means or the comparison processing means has a temporary holding function and a subtraction function, and outputs a temporal variation of an input signal to the temporary detection processing means or the comparison processing means. Difference processing means, processing means for comparing an output signal of the difference processing means with an arbitrary value, averaging processing means for calculating an average value of results of the comparing processing means within a certain period, and the averaging processing 7. An addition processing means for adding a predetermined value to a value according to an output signal of the means and outputting the addition processing means is provided in the preceding stage of the temporary detection means or the comparison processing means. A traveling detection system for vehicles such as described in Crab. 9. The cumulative processing means compares the past cumulative value with any value, the processing means for temporarily holding the past cumulative value, the processing means for comparing the past cumulative value with any value, and the present cumulative value with any value. Decoding processing means for outputting a selection signal based on the comparison result of each of the processing means and the processing means for comparison, and the cumulative value and a plurality of arbitrary values are switched and output by the output selection signal of the decoding processing means. 9. The traveling detection system for a vehicle or the like according to claim 1, further comprising a selection processing unit.