JPH04136735A - Vehicle information storage system - Google Patents

Abstract

PURPOSE:To store long-time information on a vehicle in a stable manner by a system wherein the information on the vehicle collected for each prescribed time is recorded in a memory card recording means. CONSTITUTION:A system is constructed of a system control means 20 for controlling whole operations, an information detecting means 70 for detecting information on a vehicle, a set condition input means 40 for inputting set conditions such as timing of collection of the information to the system control means 20, a display means 60 for displaying various information, and a memory card recording means 30 connected directly to a bus line of the system control means 20 and provided for accumulating and storing the information on the vehicle collected for each prescribed time, according to an instruction from the display means 60. The memory card recording means 30 is constructed of a buffer 31 for accumulating and storing the information on the vehicle collected for each prescribed time and a memory card 32 for recording data in the buffer 31.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vehicle information storage system, and particularly to a vehicle information storage system that can stably store various vehicle information over a long period of time under actual usage conditions of the user. Related to information storage systems.

[Conventional technology]

Data numbers such as the vehicle's running speed and engine speed are necessary to check the condition of the vehicle. Accurately collecting and recording this data over a long period of time is essential for safe driving as maintenance information. It is important to ensure that

FIG. 11 shows a conventional example. The conventional example shown in FIG. 11 includes an information detection means 70 for detecting vehicle information, a storage medium 130 such as a recording paper, a floppy disk, a magnetic tape, etc., and vehicle information data from the information detection means 70 at regular intervals. storage control means 120 for recording on storage medium 130
With &Sru.

Here, the information detection means 70 is the engine rotation speed detection means 71.
, a traveling speed detection means 72 , and a boost pressure detection means 73
It is composed of.

Engine speed detection means 71 and traveling speed detection means 72
The information from the boost pressure detecting means 73 and the boost pressure detecting means 73 are taken in at regular intervals by the storage control means 120 and recorded on a storage medium 130 such as recording paper, a floppy disk, or a magnetic tape.

[Problem to be solved by the invention]

However, in the conventional example described above, recording paper, floppy disks, and magnetic tape are used as storage media, which has the disadvantage of being adversely affected by vibrations and temperature changes inside the vehicle, making it impossible to collect reliable data. .

Furthermore, since raw information is recorded chronologically on a storage medium, the amount of recorded data quickly reaches the storage capacity of the storage medium, making it possible to only record information for a very short period of time, within a few hours. There were also points.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle information storage system that can improve the disadvantages of the conventional system and, in particular, can stably store long-term vehicle information under the actual usage conditions of the user.

[Means to solve the problem]

Therefore, the present invention includes a system control means for managing the entire system, an information detection means for detecting vehicle information, and a system for converting information from the information detection means into a signal that can be decoded by the system control means. an interface, a setting condition input means for inputting setting conditions such as the timing of information collection into the system control means, a clock for notifying the system control means of the timing of information collection, and a clock connected directly to the hash line of the system control means. a memory card recording means for cumulatively storing vehicle information collected at regular intervals according to commands from the system control means;
The device is configured to include display means for displaying various information recorded on the memory card recording means. This aims to achieve the above-mentioned purpose.

[Operation] (1) The user sets the time interval for information collection while interacting with the display means using the setting condition input means. This setting data is stored in the system control means. However, if it has already been set and there are no changes, there is no need to set it newly.

(2) An interrupt is generated from the clock to the system control means at predetermined intervals, and the system control means takes in the signal from the information detection means via the interface and stores it in accordance with the timing.

(2) The system control means obtains a corresponding map number from a map prepared in advance based on the detected data.

(2) Further, the system control means issues a command to the memory card recording means to increment the value in the data area of the determined map number by 1.

(2) Vehicle information is cumulatively recorded in the memory card recording means.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 9.

The embodiment shown in FIG. 1 includes a system control means 2o for managing the operation of the entire system, an information detection means 7o for detecting vehicle information, and the system control means 2o decoding information from the information detection means 70. an interface 10 for converting into a signal that can be collected; a setting condition input means 40 for inputting setting conditions such as the timing of information collection into the system control means 2o; a display means 60 for displaying various information; The system control means 20 controls the timing of
a clock 5o for informing the system control means 2;
The memory card recording means 30 is directly connected to the bus line o and is used to cumulatively store vehicle information collected at regular intervals according to commands from the display means 60.

Here, the information detecting means 7o is composed of an engine rotation speed detecting means 71, a traveling speed detecting means 72, and a boost pressure detecting means 73, as shown in FIG. Furthermore, as shown in FIG.
1 is a rotational speed sensor, the traveling speed detecting means 72 is a vehicle speed sensor, and the boost pressure detecting means 73 is a pressure sensor. Note that the detection data and detection device are not limited to these.

As the system control means 20, a CPU (Central
It is composed of a processing unit (central processing unit) 21, a RAM 22 for storing setting data and information data, and a ROM 23 for storing a program for operating the CPU 21.

Here, the RAM 22 is backed up by a battery.

As shown in FIG. 2, the interface 10 includes a rotation speed interface 11 for converting a signal from a rotation speed sensor 71, a vehicle speed interface 12 for converting a signal from a vehicle speed sensor 72, and a pressure sensor 73. It is comprised of a pressure interface 13 for converting signals from the pressure interface 13, and an AD conversion circuit 14 for converting analog signals from the pressure interface 13 into digital signals.

The memory card recording means 30 includes a buffer 31 for cumulatively storing vehicle information collected at regular intervals, and a memory card 32 for recording data in the buffer 31.

Further, the setting condition input means 4o is composed of a keyband 42 for manual key operation and a keypad interface 41 for converting signals from the keeper/knob 42, but is not limited to this. You can also use a light pen, etc.

Further, as shown in FIG. 3, a real-time clock is used as the clock 5°.

Further, as the display means 60, an LCD (Liquid
A crystal display (liquid crystal display) 62 and a CD driver 61 for driving the LCD are used. Further, as the display means 60, a plasma display or a CRT (Cathode Ray
Tube) display etc. can also be used.

Next, the operation of this embodiment will be explained.

(a) First, the user selects the keypad 42 from the LCD 62.
Set the time interval for information collection while interacting with the user. This setting data is stored in the RAM 22.

However, if it has already been set and there are no changes, there is no need to set it newly.

(b) An interrupt signal is input from the real-time clock 50 to the CPU 21 at a set fixed time interval, and at that timing, the signal from the rotation speed sensor 71 is sent to the rotation speed interface 11, and the signal from the vehicle speed sensor 72 is sent to the vehicle speed interface. 12, the signal from the pressure sensor 73 is sent to the pressure interface 13 and the AD conversion circuit 14.
The data are respectively fetched into the CPU 21 and stored in the RAM 22.

(c) The CPU 21 calculates a gear ratio (=engine rotation speed/vehicle speed) from the engine rotation speed and vehicle speed, and determines a shift position.

(d) Furthermore, the CPU 21 determines the corresponding map number from among the maps set in advance regarding the relationship between the engine speed and the boost pressure, as shown in FIG. For example, if the engine speed is 1l100rpm and the boost pressure is 200mmHg, the map number is (2,1
). Then, as shown in FIG. 5, a command to add 1 to the 4 hide data at addresses 0118 to 0LIB of the memory card 32 is output to the buffer 31.

(e) Also, as shown in FIG. 6, the corresponding map number is determined from among the maps set in advance regarding the relationship between the engine speed and the shift position. For example, if the engine speed is 1l100rpm and the shift position is 1, the map number will be (2, 1), and as shown in FIG.
The command to “+1” the 4-byte data of ~051B is CP
It is output from U21 to the buffer 31.

(f) As shown in FIG. 8, for the relationship between the boot pressure and the shift position, the corresponding map number is found from among the maps set in advance. For example, the boot pressure is 200mmHg and the shift position is 1.
If so, the map number will be (2, 1), and the addresses 0718 to 07 of the memory card 32 will be
A command to increment the 1B 4-hide data by 1 is output from the CPU 21 to the buffer 31.

(g) Recording data is sent from the buffer 31 to the memory card 32 and recorded on the memory card 32.

(h) When analyzing the data in the memory card 32, the first
As shown in FIG. 0, by inserting the memory card 32 into the memory card reading means 80 connected to the personal computer 90 and inputting a predetermined command into the personal computer 90 from the keyboard 110, three-dimensional images are displayed on the CRT display 100. Graphically displayed.

Note that the maps, memory addresses, and data formats are not limited to those in this embodiment.1 [Effects of the Invention] As described above, according to the present invention, the system control means can decode the information from the information detection means. An interface for converting into a signal, a setting condition input means and display means for inputting setting conditions such as information collection timing to the system control means, and a memory card recording means directly connected to the bus line of the system control means. This configuration allows the device to be miniaturized, and furthermore, vehicle information collected at regular intervals can be stored cumulatively in a mapping format on a memory card. Therefore, it is possible to record stable and highly reliable vehicle information for a long period of time (approximately 400 days) under the actual usage conditions of the user, and the data can be easily and quickly analyzed using a personal computer, etc. It is possible to provide an unprecedented and excellent vehicle information storage system that can perform the following functions.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing one embodiment of the present invention, FIG. 2 is a detailed configuration diagram of the information detection means and interface shown in FIG. 1, and FIG. 3 is a system control means and memory card recording means shown in FIG. 1. and a detailed configuration diagram of the setting condition input means and display means, FIG. 4 is a map diagram of the relationship between engine speed and boost pressure, and FIG. 5 is a diagram of the relationship between the map number and memory address in FIG. 4. Figure 6 is a map diagram of the relationship between engine speed and shift position, Figure 7 is a diagram of the relationship between the map number in Figure 6 and memory address, and Figure 8 is a map diagram of the relationship between boost pressure and shift position. , No. 9
The figures are a diagram showing the relationship between map numbers and memory addresses in FIG. 8, FIG. 10 is a block diagram of a memory card data analysis system, and FIG. 11 is a schematic block diagram showing a conventional example. 10... Interface, 20... System control means, 300. ..., memory card recording means,
40...Setting condition input means, 50...Clock, 60...Display means, 70...Information detection means. Figure 1 Figure Figure Figure Figure Figure Figure (Engine speed) Figure (Boost pressure) Figure Figure 10 Figure 11 Figure

Claims (1)

[Claims] (1) A system control means for managing the entire system, an information detection means for detecting vehicle information, and an interface for converting information from the information detection means into a signal that can be decoded by the system control means. a setting condition input means for inputting setting conditions such as information collection timing to the system control means; a clock for notifying the system control means of the information collection timing; and a clock directly connected to the bus line of the system control means. and a memory card recording means for cumulatively storing vehicle information collected at regular intervals according to instructions from the system control means;
A vehicle information storage system comprising display means for displaying various information recorded on the memory card recording means.