JPS58146815A - Operation recording device - Google Patents

Abstract

PURPOSE:To collect exactly the operation information and to execute its output, by self-holding an electric power source through a start signal responding to an operation, or an output switch signal, etc., and also releasing it. CONSTITUTION:When an engine of an automobile, etc. is started, a start signal 8 becomes a high level, a switch 2 become on, also the switch 2 is held in an on-state by a CPU5, an electric power source of a battery 1 is self-held, and the operation information is collected into a memory 6 through the CPU5. When the automobile stops and the signal 8 becomes a low level, the information which is being collected from an information source 4 is stored in the memory 6, and after that, the CPU5 released holding of the switch 2, and the operation information is collected exactly. On the other hand, in accordance with a moving operation of an output switch 9, holding of the electric power source of the battery 1 and its release are executed in the same way through the CPU5, and an output for reading out the operation information, which is executed when the automobile stops is executed exactly.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control for turning on and interrupting the power supply of a driving recorder for recording driving information of a motor vehicle.

In recent years, various electronic devices have been installed in automobiles, which have various effects in terms of safety, economy, and comfort.

Among these, a driving recording device has been proposed that takes in various types of vehicle information, processes it appropriately, collects and stores the driving data, and outputs the collected contents to a suitable output device.

By the way, the power to prevent electronic devices mounted on a car is usually obtained from an existing power supply device consisting of a generator and a battery, and when the car is not in use, power is supplied to the electronic devices to prevent the battery from discharging. It is necessary to cut off the However, it goes without saying that even when the above-mentioned driving recorder, the Monoke Car, is not in use, the collected data must be memorized and saved, and the output of the collected data must be carried out when the car is not in use, that is, when the generator is stopped. There are many opportunities to do so. However, simply providing a manual power switch for turning on and off the power of such a driving recording device may result in the driving recording device not being able to perform its original function due to forgetting to turn on the power.

This invention was made with the aim of resolving the above-mentioned problem, and the power of the driving recording device is supplied to ai'J when the car is used or collected data is output, and when the car is not used, it is automatically turned on. The purpose of this invention is to provide a driving recording device that can be interrupted at any time.

An embodiment of the present invention will be described below with reference to the drawings.
Conduction and disconnection between Ia) and (e) are controlled by the logical sum of l. (3) is a constant voltage power supply device with a switch means (!1
The fluctuating voltage of the battery (11) is controlled to a predetermined constant voltage, and power is supplied to various loads (to be described later). It is a source of information.

+51 II'i information processing device (hereinafter referred to as OFσ) takes in the information from the information source (4) and performs a predetermined calculation,
It exchanges information with and controls each terminal described later.

(6) is a memo 'J-, (7
) is an output device for extracting the operation data of the memo IJ-fil, such as a printer.

Reference numeral (8) is a starting signal for starting the present driving recording device, and is, for example, a signal from the L terminal (or the terminal) of the voltage regulator.

(9) is an output switch for giving a command to output operation information to the output device (7), and is, for example, an on/off switch connected to the battery il+.

Next, the VC operation will be explained. When the driver rotates the engine to use the car, the generator rotates at the same time, and as is well known, a generator voltage of ¥i is generated at the L terminal of the voltage regulator. In other words, a voltage is generated at the output terminal (8L1) of the IJ signal (8), and this voltage makes the switch means (2) conductive, and the voltage of the patch IJ -il+ is supplied to the input side of the constant voltage power supply (31). As a result, CPU
F51 starts up. CP [J When +51 starts up, the signal to+K is first activated to self-hold the power supply.
The H level signal is output to ensure the state of 4 messages with the switch grade "21", and the cause of the next activation is judged by looking at the signals 1al and Tol.In this embodiment, the signal (ILl is at the 5th level) s Ia ”j fbl
It is detected that the car is in use because it is at the L level, and from then on, the operation information from the information source (4) is finally taken in, predetermined arithmetic processing is performed, and the operation data is stored in the memory (6). Perform a series of processing to

In addition, in parallel with the above calculation processing, signals (Ll and Ura!
fbl is constantly taken in to determine the device activation conditions.

When the output switch (9) is turned on here, the signal tb+
%CPσflSl reaches the H level and outputs the operation data up to that point through the output device (7). Output device t+
71K When the specified data is output, the output switch (9
) and keep the signal fbl at L level.

Next, when the driver finishes using the car and stops the engine, the output (IL) of the start signal (8) becomes stingy level, and the CPU f5+ detects this and performs post-processing of the data collection work, that is, the memory ( 8), the power hold signal 1o1 is automatically set to the L level until the writing is completed, or after the predetermined data volatilization processing is performed to protect the data contents of the memo IJ-+61. Then, the switch means (21) is cut off. Therefore, the operation information during the period when the car is in use is
Memory +61K is stored, and power loss when the car is not in use can be reduced to almost zero by shutting off the constant voltage power supply (3). Also, even when the car is not in use, if the output switch (9) is turned on, the output will be 1 bl.
An H level voltage is generated in the CPU (
6) starts.

Therefore, the power supply hold signal 8;j tol is generated and i
It is detected from the C signal H+a+ and the signal fbl that it is an output device operation command, and the output device d performs the predetermined operation data output processing.
After performing fil K, the hold signal (0
) to L level and cut off the power. Of course, if the output switch (9) continues to be turned on at this time, the operation data output process to the output device (7) will be repeated again, and as a result, the same data will be output.

In the above embodiment, an example is shown in which the L terminal (or X terminal) of the voltage regulator is used as the activation signal (8), but a signal from a key switch equipped in any automobile may also be used. In addition to a printer, the output device (7) may be a magnetic tape, a semiconductor memory, or a display device such as a cathode ray tube or liquid crystal panel. An example of the switch means 12) is as shown in Figure O8. In addition, it can be constructed from a wired-OR circuit for the signals fJLl, flit, and lot and a switching transistor.

Note that it is not necessary to have one output switch (9) #"t, and for example, if a printer is configured as an output device ( It goes without saying that they may be arranged in parallel with a similar configuration.

As described above, according to the present invention, the power supply of the driving recording device is activated by at least one operation when using the car or when using the output device, and the device itself holds the power supply, and the above-mentioned operation is eliminated. The device M is characterized by being equipped with an information processing device that removes the hold signal and shuts off the power after completing the predetermined post-processing. In addition, when the car is not in use, the battery can be prevented from discharging, and even when the car is not in use, the output device can be activated to output driving data.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an operation recorder according to an embodiment of the present invention, and Fig. 8 is a diagram showing an embodiment of the switch means. In the figure, (1) is the battery, (2) is the switch means, +31 F! Constant voltage power supply, (41 is the information source, fl
It is an information processing device, (6) is a memory, (7) is an output device, (8) Ifi activation signal, and (9) is an output switch. Note that the same reference numerals in the figures indicate the same parts. Agent Shin Kuzuno −

Claims (1)

[Claims] fi+ In a driving recording device that collects a small amount of vehicle operation information, processes it, collects and stores this information, and outputs this information using an output device, the main power source of the device is connected to the vehicle operation. Or, the output device is activated by at least one of the operations for using the output device, the device itself maintains the main power of the device by a power hold signal generated from inside the device, and after the above operation is removed, the device A driving recording device comprising an information processing device that performs control such that the device itself removes the power hold signal and shuts off the main power source of the device after the device completes a predetermined process.