JPS6295444A - Diagnostic system for automobile - Google Patents

Abstract

PURPOSE:To allow plural field devices to share one computer by only taking a diagnosis and displaying its result by each field device and judging diagnostic data by the computer provided separately. CONSTITUTION:The kind of an automobile, a diagnostic item, etc., are inputted through the keyboard 6 of a field device 1 and then a connector cord 7 is used to detect the ignition period of a plug of the engine, the number of pulses, components of exhaust gas, the output signals of sensor parts of various equipments under computer control, etc., so that diagnostic data obtained by this diagnostic data input means 3 are outputted to the main computer 2 by a transmitting/receiving means 5 through a connection line 14. The main com puter 2 analyzes the diagnostic data by an arithmetic means 11 on the basis of judgement materials stored in a storage means 12 to judge whether the engine, etc., are normal or not. The diagnostic results are sent to the field device 1 by a transmitting/receiving means 13 and displayed on a CRT screen 8 as a diagnostic result display means 4 or printed out on a printer 9, so that the diagnostic results are known.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automobile diagnostic system used, for example, at a gasoline refueling station for automobiles.

[Conventional technology]

Not only specialized automobile repair shops but also gasoline filling stations have recently installed automobile diagnostic equipment as part of their operations to diagnose engines, etc. and discover defects in automobiles. Conventionally, a judgment mechanism such as an RC was incorporated into a diagnostic device installed at a field such as a gas station, and diagnostic data was judged on the spot.

[Problem that the invention seeks to solve]

However, in such a method, the diagnostic equipment installed at the site is not only large-scale but also expensive, which increases costs. Moreover, in the current situation where many automobiles are equipped with a large number of devices that are automatically controlled by computers, the number of diagnostic VFR (lliI) locations in addition to the engine has increased significantly. Diagnosis equipment with large capacity is required to determine this.However, there is a limit to the capacity of diagnostic equipment that can be installed on-site, and conventional equipment could not meet this requirement.

Furthermore, in gasoline filling stations where the diagnostic device is used infrequently, such as several times a day, it is not cost-effective to install an expensive diagnostic device with a built-in sophisticated judgment mechanism.

The object of the present invention is to solve the above-mentioned disadvantages of the conventional example, and to provide an automobile diagnostic system that can obtain sufficiently detailed diagnosis contents without requiring a large-scale on-site device, and that can be performed at low cost. Our goal is to provide the following.

[Means for solving problems]

In order to achieve the above object, the present invention is composed of a plurality of on-site devices and a computer to which these devices are connected, and the on-site devices are provided with an automobile diagnostic data input means and an automobile diagnostic result display means, The gist of the present invention is to use a computer to perform arithmetic diagnosis on the diagnostic data output from the on-site equipment, and to output the diagnosis results to the on-site equipment.

[Effect]

According to the present invention, a plurality of on-site devices are connected to a computer one by one, and the on-site devices only input vehicle diagnostic data and display the results, and judgments on the diagnostic data are made separately from the on-site devices. By using a computer installed at
Since one computer is sufficient for a plurality of on-site devices, the cost does not increase, and the capacity of the computer can be increased, making it possible to obtain detailed judgment results covering a wide variety of contents.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an overall explanatory diagram showing an embodiment of the automobile diagnostic system of the present invention, and FIG. 2 is a front view showing an example of the on-site device of the present invention. As shown in the figure, there are multiple on-site devices 1゜1"l I+-m- and one main computer 2 to which they are connected.
It consists of

The on-site device 1 is composed of a diagnostic data input means 3, a diagnostic result display means 4, and a transmitting/receiving means 5 for communicating with the computer 2. Connector cord 7 for data input connected to plugs and various sensors, CR7 screen 8 and printer 9 as diagnostic result display means 4,
Further, a card reader 10 for a card owned by a customer is provided in each case 1a of the on-site device 1.

On the other hand, the main computer 2 includes a calculation means 11 for determining diagnostic data output from the field device 1, a storage means 12 for storing judgment materials, etc., and a transmitting/receiving means 13 for communicating with the field device 1. establish.

A plurality of on-site devices 1 configured in this way are installed in a large-scale car repair shop that specializes in automobile diagnosis, and one main computer 2 is installed in an office or the like of the factory. do.

In addition, in small-scale factories and gasoline filling stations that are infrequently used, the number of on-site devices 1 installed is one, and the main computer 2 is installed one at a collection point such as a calculation center, and multiple This one main computer 2 may be shared by factories and gas stations.

In addition, the field equipment i, t', i''----
... and the main combinator 2 may be a dedicated line or a public line such as a public telephone line (although there is no particular limitation).

Next, to explain the usage and operation, first input the vehicle type, diagnosis items, etc. using the keyboard 6 of the on-site device 1,
Next, by using the connector cord 7 to detect the ignition timing of the engine's plug, the number of pulses, the components of exhaust gas, the output signals of some of the sensors of each device controlled by the computer, the diagnostic data by the diagnostic data input means 3 can be obtained. The transmitting/receiving means 5 connects the main combinator 2 via the connecting line 14.
is output to.

In the main computer 2, diagnostic data is inputted by the transmitting/receiving means 13, and the diagnostic data is analyzed by the calculating means 11 based on the judgment data stored in the storing means 12.
The quality of the engine, etc. is judged.

The diagnosis result is sent again to the on-site device l by the transmitting/receiving means 13, and the CR7 screen 8 serves as the diagnosis result display means 4.
or printed by the printer 9, and thus know the diagnosis result.

Similarly, the other on-site devices 1', 1'' output the diagnostic data diagnosed here to the main computer 2, the main computer 2 judges the diagnostic data, and the diagnostic results are sent to the on-site equipment. Device 1", 1 pa---
- Display in one page.

〔Effect of the invention〕

As described above, in the automobile diagnostic system of the present invention, when determining the quality of the automobile engine, etc., the on-site device only performs the diagnosis and displays the results, and the judgment of the diagnostic data is separately provided. By using a computer to share the same computer with multiple on-site devices, only one main computer is needed for an expensive combination machine, and it can also have a large capacity.
It is inexpensive and provides detailed diagnostic results.

[Brief explanation of drawings]

FIG. 1 is an overall explanatory view showing an embodiment of the automobile diagnostic system of the present invention, and FIG. 2 is a front view showing an example of the on-site device which is the main part. 1.1°, 1″-・--1-... Field equipment 1a...
・Case 2...Main computer 3...Diagnostic data input means 4...Diagnostic result display means 5...Transmitting/receiving means 6...Keyboard 7...Connector code 8...CRT screen 9...・Printer 10...
Card reader 11...Arithmetic means 12...Storage means 13...
・Transmission/reception means 14...Connection line Applicant: Tokyo Tatsuno Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] It is composed of a plurality of on-site devices and a computer to which these devices are connected. An automobile diagnostic system is characterized in that it performs arithmetic diagnosis on diagnostic data and outputs the diagnosis results to on-site equipment.