JP2003240799A - Rapid acceleration and deceleration determining and controlling system for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow the accuracy of vehicle speed information and stability of a process response speed to be improved by accumulating information of previous 10 cases from the current vehicle speed information. <P>SOLUTION: A vehicle speed detector 4 is a vehicle speed sensor prepared for outputs from a transmission and a speed meter of a vehicle. A contact input 20 detects the vehicle speed information from the vehicle speed detector 4. A peripheral device connection 15 controls an external peripheral device 7. A system file storage medium 17 stores a program such as an application software, etc. An acquired information storage medium 16 stores data such as the acquired vehicle speed information, etc. A central processing part 13 controls an internal process such as external control for each input and output interface, power supply management, etc., in accordance with a command of the installed application software. Image displays 1, 2 display screens of the installed software. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted rapid acceleration / deceleration determination control system, and more particularly to a vehicle-mounted rapid acceleration / deceleration determination control system for determining rapid acceleration / deceleration of a vehicle based on vehicle speed information.

[0002]

2. Description of the Related Art Recently, vehicles such as automobiles are equipped with a so-called car navigation system, which is a road information display device. In addition to the car navigation system, the traveling information is controlled by using the detection information of this system to control the driving force characteristics of the vehicle. The device is also installed.

In the vehicle speed information processing of this travel control device, since only the latest detection information is stored, it is considered that the information required at the time of the information acquisition request has already been updated.

As an example of such a technique, Japanese Patent Laid-Open No.
"Vehicle traveling control device" described in JP-A-1-233083
It has been known.

In this publication, in controlling the characteristic of the vehicle driving force according to the attribute of the road, a GPS receiver and a vehicle speed sensor are provided so that the behavior of the vehicle does not feel uncomfortable even if the map matching for specifying the road becomes impossible. , A technology for identifying a road on which a vehicle is traveling based on an angular velocity sensor and map data and controlling the vehicle based on the road type.

[0006]

In the above-described conventional vehicle-mounted rapid acceleration / deceleration determination control method, only the latest vehicle speed information is stored. Therefore, the vehicle speed information required when the vehicle speed information acquisition request is made is already updated. However, there is a drawback that optimum control cannot be performed.

Further, the application software has a drawback that it needs constant access to obtain vehicle speed information.

The object of the present invention is to accumulate the vehicle speed information for the past 10 cases from the latest vehicle speed information, thereby enabling the accuracy of the required vehicle speed information to be improved, and by accumulating the vehicle speed information, the application software can be constantly maintained. It is an object of the present invention to provide a vehicle-mounted rapid acceleration / deceleration determination control method capable of improving stability of control operation and processing response speed without access.

[0009]

SUMMARY OF THE INVENTION A vehicle-mounted rapid acceleration / deceleration determination control method according to the present invention uses a vehicle speed information indicating the number of vehicle speed pulses generated by a vehicle speed detector provided for transmission of a vehicle and output of a speedometer. And determine the rate of change by comparing this acquired vehicle speed information with the previously acquired vehicle speed information,
When a numerical value exceeding the set rate of change is detected, it is determined to be rapid acceleration / deceleration.

A vehicle speed detector which is a vehicle speed sensor prepared for transmission and speedometer output of the vehicle, a contact input section for detecting vehicle speed information from the vehicle speed detector, and a memory for storing data of vehicle speed acquisition information. A vehicle and a central processing unit for controlling a rapid acceleration / deceleration determination process, wherein the contact input unit records the number of pulses generated at every predetermined time and acquires the vehicle speed information; A comparison step of comparing the vehicle speed information with the previously acquired vehicle speed information; a change rate determination step of performing a change rate determination by comparison;
A rapid acceleration / deceleration determination step of determining a rapid acceleration / deceleration when a value exceeding the set rate of change is detected; and a case of rapid acceleration / deceleration determined in this rapid acceleration / deceleration determination step,
An event notification step in which the central processing unit outputs an event signal indicating the occurrence of sudden acceleration / deceleration; and a contact input via the central processing unit for stepwise level determination of sudden acceleration / deceleration caused by the event notification. A request for information acquisition to the department twice, vehicle speed information for a total of three times from the first event occurrence, an average speed change rate is calculated, and a speed change rate determination step of returning to the vehicle speed information acquisition step; In the deceleration determination step, when the rate of change is within the set range, the normal processing step of storing the data of the vehicle speed information acquired as the normal processing in the storage medium and returning to the vehicle speed information acquisition step; It has a feature.

The contact input section stores vehicle speed information for the past n (n is an integer of 2 or more) as accumulated information,
The accumulated vehicle speed information is output at any time in response to a vehicle speed acquisition request from the central processing unit.

A vehicle-mounted control device, external peripheral equipment,
A first video display device and a second video display device for displaying a screen of the installed software, a vehicle speed detector which is a vehicle speed sensor prepared for transmission of a vehicle and output of a speedometer, and a cold storage. A temperature detector, which is a temperature sensor, an accessory that is a power supply wire for the vehicle, an accessory that indicates a terminal, a vehicle battery, and the vehicle battery and the power cable of the vehicle-mounted control device, which are arranged to turn on / off the power supply.
It is a power supply device that controls interruption, and acquires the number of vehicle speed pulses generated by the vehicle speed detector as vehicle speed information, and determines the rate of change by comparing the acquired vehicle speed information with the previously acquired vehicle speed information. However, when a numerical value exceeding the set rate of change is detected, it is determined to be a rapid acceleration / deceleration.

The external peripheral device is a GPS (Global).
l Positioning System) A position information detection device that outputs position information measured based on a signal received from a satellite, a state input device that inputs a work status of a vehicle by an arbitrary key operation by a driver, and transmission of acquired information. It is characterized by having a communication device that transmits instruction information from the office.

The vehicle-mounted control device includes a first video signal output section and a second video signal output section for outputting a video of a screen of the on-board software as an output interface, and a peripheral device for controlling the external peripheral device. A connection unit, a contact input unit that detects vehicle speed information from the vehicle speed detector, an analog signal input unit that detects temperature information output from the temperature detector and the accessory, and an input voltage value, and a switch press , A power supply circuit unit that executes suspend / resume, a power supply unit that is a power supply generation circuit, a system file storage medium that stores application software, an acquisition information storage medium that stores vehicle speed acquisition information data, and each input / output Internal processing such as external control of interface and internal power management is controlled according to the instruction of application software. It is characterized by having a.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a vehicle-mounted rapid acceleration / deceleration determination control system according to the present invention.

In this embodiment shown in FIG. 1, a vehicle-mounted control device 3, an external peripheral device 7, a video display device 1 and a video display device 2 for displaying a screen of on-board software, a vehicle transmission, and A vehicle speed detector 4 which is a vehicle speed sensor prepared for speedometer output, a temperature sensor 5 which is a temperature sensor mounted in a cool box, and an accessory which is a power supply wiring of the vehicle.
It is composed of an ACC 6 indicating a terminal, a vehicle battery 22, a vehicle battery 22, and a power supply device 21 arranged on the power cable of the vehicle-mounted control device 3 and controlling energization / interruption of the power supply.

The external peripheral device 7 includes a position information detecting device 8 for outputting position information measured based on signals received from GPS satellites, and a state input device for inputting a work condition of a vehicle by an arbitrary key operation by a driver. 9 and transmission of acquired information,
The communication device 10 transmits instruction information and the like from the office.

The vehicle-mounted control device 3 has a video signal output unit 11 for outputting a video image of the screen of the on-board software as an output interface, a video signal output unit 12, and a peripheral device connection unit 15 for controlling the external peripheral device 7. , Vehicle speed detector 4
A contact input section 20 for detecting vehicle speed information from the vehicle, an analog signal input section 19 for detecting temperature information output from the temperature detector 5 and the ACC 6 and an input voltage value, and suspend / resume by pressing a switch. Power supply circuit section 14, a power supply section 18 which is a power supply generation circuit, a system file storage medium 17 for storing programs such as application software, an acquisition information storage medium 16 for storing data such as vehicle speed acquisition information, and the like. It is composed of a central processing unit 13 which controls external processing of the output interface and internal processing such as power management in accordance with a command of the application software installed.

FIG. 2 is a diagram showing a normal vehicle speed information acquisition sequence.

FIG. 3 is a diagram showing a vehicle speed information acquisition sequence at the time of processing congestion.

Next, the operation of the present embodiment will be described in more detail with reference to FIGS. 1, 2 and 3.

The vehicle speed pulse 25 output from the vehicle speed detector 4 is used to determine the traveling speed, the travel distance, and the rapid acceleration / deceleration of the vehicle.
Is detected by the contact input unit 20, and the number of generated pulses is recorded every 500 msec. The information output from the vehicle speed detector 4 is constantly acquired by the central processing unit 13 in the information storage medium 16
The application software 24 stored in the system file storage medium 17 makes a vehicle speed acquisition request 27 to the device driver 23 of the central processing unit 13 when information is required. On the other hand, the vehicle speed information output 28 is acquired.

The past 10 cases of vehicle speed information are stored in the contact input unit 20.

The method of utilizing the vehicle speed information varies depending on the operation method of the system, and is roughly classified as follows.

In the utilization example of the dynamic management system, there are many operating methods in which the acquisition timing of the position information and the traveling speed / distance are transmitted together to the center system. In this case, the latest traveling speed is acquired due to the acquisition of the position information. In addition, an operation method has also been realized in which information on traveling speed / distance is acquired at a set interval based on the lapse of a set time, and acquisition of information on speed / distance by a dynamic management system takes about minutes. There will be intermittent intervals.

Further, in the operation management system, history information such as changes in traveling speed and traveling distance is constantly acquired and accumulated during operation, so that the information acquisition interval is constantly detected at about 500 msec. In this way, the vehicle speed information is classified into an intermittent determination type and a constant detection type depending on the operation method.

This control method is based on the above-mentioned dynamic management system,
In order to respond to different usages of the operation management system, the vehicle speed information for the past 10 cases is accumulated as the accumulated information 30 in the contact input unit 20, and the vehicle speed is requested at any time 27 in response to the vehicle speed acquisition request 27 from the application software 24. Output information.

The reason for adopting the information storage type is that it is necessary to acquire pulses at short intervals in order to improve accuracy in acquiring operation history information. When the information acquisition interval is short, there is a concern that actual processing may be delayed due to congestion with other processing. In order to prevent such processing delays, it has a function of accumulating past data, and by omitting the acquisition of information by correction processing that traces back the delay time, it is possible to improve accuracy and achieve stable operation in constant detection type information acquisition. You can

The conversion method of the speed and distance information with respect to the vehicle speed acquisition information is shown below.

The vehicle speed detector 4 is attached to the transmission of the vehicle and synchronizes with the rotation of the axle, and outputs a vehicle speed pulse 25 as a pulse signal. The contact input unit 20 counts up the number of pulses generated by the vehicle speed pulse 25.

The velocity and the distance are calculated by the following formulas according to the acquired number of pulses generated.

[0033]

[Equation 1]

The number of rotations of the axle during traveling 1 km = 637
Rotation (defined by JIS standard).

[0035]

[Equation 2]

The number of rotations of the axle during traveling 1 km = 637
Rotation (defined by JIS standard).

When used as the operation history information, the information on the traveling distance and the traveling speed derived by the above formula is accumulated at every acquisition interval (minimum 500 msec) set from the start of work.

Here, a calculation example will be described in Table 1. However, the number of pulses per one rotation of the axle is 25.

Table 1 shows the relationship between the traveling distance and the traveling speed in the acquisition pulse.

[0040]

[Table 1]

FIG. 4 is a flowchart showing a rapid acceleration / deceleration determination flow.

The contact input unit 20 records the number of pulses generated every 500 msec and acquires vehicle speed information (step 1: S1). The acquired vehicle speed information and the previously acquired information are compared (step 2: S2). Next, change rate determination is performed (step 3: S3). As a result of the determination, when a numerical value exceeding the set change rate is detected, it is determined as rapid acceleration / deceleration. The case of sudden acceleration shows the case of positive side change, and the case of sudden deceleration shows the case of negative side change (step 4: S
4).

When such rapid acceleration and rapid deceleration are determined in step 4, an event signal is output from the device driver 23 of the central processing unit 13 to notify the application software 24 of the occurrence of rapid acceleration / deceleration (step 5: S
5).

Next, in order to perform a stepwise level determination of the rapid acceleration / deceleration caused by the event notification to the application software 24 by the rapid acceleration / deceleration determination, information is acquired to the contact input unit 20 via the device driver 23 of the central processing unit 13. Is requested twice, the vehicle speed information for a total of three times is acquired from the first event occurrence, the average speed change rate is calculated, and the process returns to step 1 (step 6: S6).

If the rate of change is within the set range in step 4, the vehicle speed information data acquired as normal processing is stored and the process returns to step 1 (step 7: S7).

Since the degree of rapid acceleration / deceleration can be determined based on the calculation result, detailed analysis of the acquired information in operation management can be realized.

Table 2 shows an example of change rate determination in rapid acceleration / deceleration.

[0048]

[Table 2]

In rapid acceleration / deceleration, the rate of change tends to increase with time from the start of speed change due to braking and accelerator operation. Therefore, the change rate transition for each speed determination from the first rapid acceleration / deceleration determination determines the level of rapid acceleration / deceleration. It becomes important in doing.

Further, based on the sudden acceleration / deceleration information confirmed while the vehicle is in operation, it is possible to notify the center system of the alarm in cooperation with the communication device 10.

As described above, in the present invention, not only the number of occurrences of sudden acceleration / deceleration that is supported by the existing system but also the level determination by the analysis of the speed transition, and the alarm information collection during the vehicle operation in cooperation with the communication device 10 are performed. It is possible to realize more advanced operation management.

Table 3 shows the judgment levels for rapid acceleration / deceleration.

The rapid acceleration / deceleration determination level is set to three levels according to the value of the average rate of change.

[0054]

[Table 3]

Since the vehicle speed information is obtained from the contact input section 20 via the device driver 23 in accordance with a command from the application software 24, the external peripheral device 7 is used.
It enables complex information acquisition and utilization in conjunction with the operation of.

Although the acquired information is stored for 10 cases, it is not limited to 10 and can be set arbitrarily.

[0057]

As described above, according to the vehicle-mounted rapid acceleration / deceleration determination control method of the present invention, 10 pieces of acquired information are retained in the vehicle speed information acquisition control due to congestion with other processing. Since it is prepared for the delay of the actual processing, there is an effect that the accuracy of the information is maintained and the stable operation of the device is realized by acquiring the appropriate information.

In the rapid acceleration / deceleration determination, the level of rapid acceleration / deceleration is determined by deriving the average rate of change based on a total of three changes in vehicle speed information from the first determination, so that more advanced information can be obtained. Has the effect.

Further, since it is linked to the external peripheral equipment in a complex manner based on the acquired information, it has an effect of supporting more advanced operation management.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a vehicle-mounted rapid acceleration / deceleration determination control system for mounting on a vehicle.

FIG. 2 is a diagram showing a normal vehicle speed information acquisition sequence.

FIG. 3 is a diagram showing a vehicle speed information acquisition sequence during processing congestion.

FIG. 4 is a flowchart showing a rapid acceleration / deceleration determination flow.

[Explanation of symbols]

1 Video display device 2 Video display device 3 Vehicle-mounted controller 4 vehicle speed detector 5 Temperature detector 6 ACC 7 External peripherals 8 Position information detector 9 Status input device 10 Communication device 11 Video signal output section 12 Video signal output section 13 Central Processing Department 14 Power circuit section 15 Peripheral device connection 16 Acquired information storage medium 17 System file storage medium 18 power supply 19 Analog signal input section 20 contact input section 21 power supply 22 vehicle battery 23 Device driver 24 Application software 25 vehicle speed pulse 27 Vehicle speed acquisition request 28 Vehicle speed information output 30 accumulated information

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Claims (6)

[Claims] 1. A vehicle speed pulse output number output from a vehicle speed detector provided for a vehicle transmission and a speedometer output is acquired as vehicle speed information, and the acquired vehicle speed information is compared with the previously acquired vehicle speed information. The rapid acceleration / deceleration determination control method for mounting on a vehicle, characterized in that the rate of change is determined and when a value exceeding the set rate of change is detected, it is determined as rapid acceleration / deceleration. 2. A vehicle speed detector, which is a vehicle speed sensor prepared for a vehicle transmission and a speedometer output, a contact input section for detecting vehicle speed information from the vehicle speed detector, and vehicle speed acquisition information data stored therein. A storage medium and a central processing unit for controlling the rapid acceleration / deceleration determination process, wherein the contact input unit records the number of pulses generated at every predetermined time and acquires the vehicle speed information; A comparison step of comparing the acquired vehicle speed information with the previously acquired vehicle speed information; a change rate determination step of performing a change rate determination by comparison; and a rapid change when a value exceeding the set change rate is detected as a result of the determination. A sudden acceleration / deceleration determination step of determining acceleration / deceleration; and an event that the central processing unit outputs an event signal indicating occurrence of rapid acceleration / deceleration when rapid acceleration / deceleration is determined in the rapid acceleration / deceleration determination step. Notification step: In order to perform a stepwise level determination of rapid acceleration / deceleration due to this event notification, a request for information acquisition is made twice to the contact input section via the central processing section, and a total of 3 times from the first event occurrence. A speed change rate determination step of calculating the average speed change rate by acquiring the vehicle speed information for a number of times and returning to the vehicle speed information acquisition step; and a normal process when the change rate is within a set range in the sudden acceleration / deceleration determination step. A normal processing step of storing the data of the vehicle speed information acquired as the above in the storage medium and returning to the vehicle speed information acquisition step; and a method for rapid acceleration / deceleration determination control for vehicle mounting. 3. The contact input unit accumulates vehicle speed information of past n (n is an integer of 2 or more) cases as accumulated information, and the accumulated information is stored at any time in response to a vehicle speed acquisition request from the central processing unit. 3. The method for controlling rapid vehicle acceleration / deceleration determination for mounting on a vehicle according to claim 2, wherein the vehicle speed information is output. 4. A vehicle-mounted control device, an external peripheral device, a first video display device and a second video display device for displaying a screen of on-board software, and a vehicle transmission and a speedometer output. Vehicle speed detector which is a vehicle speed sensor,
A temperature sensor that is a temperature sensor mounted in a cool box, an accessory that is a power supply wiring of the vehicle-an accessory that indicates a terminal, a vehicle battery, and the vehicle battery and the power cable of the vehicle-mounted control device. A power supply device for controlling energization / interruption of a power supply, wherein the number of vehicle speed pulses generated by the vehicle speed detector is acquired as vehicle speed information, and the acquired vehicle speed information is compared with the previously acquired vehicle speed information. The rapid acceleration / deceleration determination control method for mounting on a vehicle, which is characterized by determining the rate of change in step 2. and detecting a value exceeding the set rate of change as rapid acceleration / deceleration. 5. The external peripheral device is a GPS (Global Positioning Sy).
position) A position information detection device that outputs position information measured based on signals received from satellites, a state input device that inputs the work status of the vehicle by an arbitrary key operation by the driver, transmission of acquired information and office 5. A communication device for transmitting instruction information from the communication device.
The rapid acceleration / deceleration determination control method for mounting on the vehicle described. 6. The vehicle-mounted control device controls a first video signal output unit and a second video signal output unit that output a video image of a screen of on-board software as an output interface, and controls the external peripheral device. Peripheral device connection section, a contact input section for detecting vehicle speed information from the vehicle speed detector, the temperature detector, an analog signal input section for detecting temperature information output from the accessory and an input voltage value, A power supply circuit unit that executes suspend / resume by pressing a switch, a power supply unit that is a power supply generation circuit, a system file storage medium that stores application software, and an acquisition information storage medium that stores vehicle speed acquisition information data. Internal processing such as external control of input / output interface and power management Central control to control according to the instruction of application software Rapid acceleration rapid deceleration determination control method for a vehicle equipped according to claim 4 or claim 5, wherein in that it has and.