JPS623132A - Abnormality record transmitter for internal-combustion engine - Google Patents

Abstract

PURPOSE:To perform diagnosis of abnormality highly accurately by deciding the abnormal condition of engine body through CPU on the basis of pressure, temperature, rotation, etc. at each portion of engine body then storing the abnormality data and the time while enabling quick take-out of the record of abnormal conditions. CONSTITUTION:A contact detector 2 for detecting abnormal pressure, temperature, etc. at each portion of engine body and a meter for measuring pressure, temperature, rotation, etc. at each portion of engine body are provided to feed the output signals through I/O circuit 3 and A/D converter 5 to CPU 1. Said CPU 1 will decide the abnormal condition of engine body on the basis of the input signals to store the abnormal items, various data useful for maintenance and the time displayed on a timer 7 into abnormal condition file in a memory 6. Upon provision of command signal from transfer commander 10 through series transmitter 9, the record of abnormal conditions in said file can be taken out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is directed to an abnormality recording and transmitting device that stores a history of abnormal conditions in an internal combustion engine and transmits the history to the outside.

"Prior Art" Generally, when diagnosing the condition of an internal combustion engine, records of past abnormal conditions that have occurred in the internal combustion engine are of great reference. For this reason, the engine user (user) can automatically collect various data of the internal combustion engine, along with the labor saving of the internal combustion engine.
Record the state of the internal combustion engine using a recording device such as Day 4XA (H2+).

``Problems to be solved by the invention'' While performing maintenance diagnosis (:, following the above)
.

Next record! ! Abnormalities are detected from among the nine types of data recorded with the lid.
, If you try to retrieve only the necessary information at the time of the state, it will be very time-consuming because the amount of data recorded is large.
・.

η1, there is a problem that it is not useful as a reference material during engine diagnosis.1+, maintenance diagnosis work is often performed by workers at engine manufacturing companies and maintenance inspection companies, rather than by engine users. In this case, the above-mentioned conventional recording device C has the problem that various data are not provided because the recorded various data includes unique information of the engine user. This was done in view of the above circumstances, and its purpose is to quickly and easily record past abnormal conditions that have occurred in the internal combustion engine when performing a complete maintenance diagnosis of the engine. To provide an internal combustion engine abnormality record transmission device capable of accurately diagnosing the condition of an internal combustion engine. (:, The present invention includes a plurality of measuring instruments that measure the pressure, temperature, rotation speed, etc. of each part of the engine body,
a timing device that detects when an abnormal state occurs in the engine body;
Based on the output C of each of the measuring instruments, the abnormal state of the engine body is determined, and the time and abnormal data output from the clock device are stored in the central processing unit stored in the storage device E, and in the storage @. 7 ``Operation'' Abnormality record transmission device of the present invention ( : Based on the output of the measuring device that measures the pressure, temperature, rotation speed, etc. of each part of the engine body (2), the central processing unit determines the abnormal state of the engine body, and outputs the abnormality data and data. The time outputted by the above-mentioned clock device is stored in the storage device, and the abnormal state history stored in the storage device is transmitted via the serial transmission device by the command signal of the transfer command device outputted to the central processing unit 1-1. An embodiment of the present invention will be described below based on FIGS. 1 to 4.

The central processing unit IC microcomputer 4) is the number one central processing unit in the country, and this central processing unit IC- is a pressure switch for detecting abnormalities such as pressure and degrees in each part of the engine body of an internal combustion engine. The contact detector 2 such as a switch has 170 circuits (
Through the input/output circuit W&) 3, and the pressure, temperature, rotation speed, etc. of each part of the engine body? The measuring instrument 4 is an A/D
They are connected to each other via a converter (anacogdigi JA-converter) 5. In addition, each device 6.7 is connected to the central processing unit 1 (to which the storage device 16 and the clock device 7 are connected at all times). In addition, a backup power source 8 for 7f1 is connected to the central processing unit 1, and the central processing unit 1 receives the contact signal of the contact ejector 2 input via the 110 circuit 3, or the A/ Based on the measurement data of the measuring instrument 4 inputted via the D converter 5, the abnormal state of the engine body is determined, and the abnormality items and maintenance at that time (
- Various measurement data strings for use (for example, horsepower, exhaust temperature, air supply @ degree, room temperature, etc.) and the time indicated by the clock device 7 are stored in the abnormal state file inside the storage device f6. There is. Furthermore, in the memory device R6,
The internal abnormal state history (abnormal item, time, measurement data string) of the above abnormal state file is stored at the first point JPTI indicating the final address at the time of last sending to the external C, and the entire abnormal state history of the abnormal state file. In the case of sending C; a convenient friend C2, a second pointer (alarm point 4) PT2 that sequentially advances the addresses from the first address of the abnormal state file;
The above-mentioned abnormal state file; a filler pointer PT3 indicating the address of the latest stored abnormal state history is installed.
The abnormal state file and each point JPT 1
, PT2゜PT3 are set (-) so that they are retained even during a power outage due to the backup power supply 84.

Furthermore, the central processing unit IC; also transmits various command signals to the central processing unit 1- through the serial transmission device 9.
A transfer command device 10 that outputs output to the two is connected.

The command signal C- of crL et al. is a command signal for transferring all the abnormal state histories in the abnormal state file, command e1, which transfers a new abnormal state history from the storage device 6 to the transfer command device 10c, etc. 8 Maintenance diagnosis work is performed on the internal combustion engine ζ incorporating the abnormality record transmission device configured as described above, and a new abnormal state history in the abnormal state file is sent to the transfer command device 10g. Immediately after that, the addresses indicated by the first pointer PTl and the third pointer PT3 match (the second
In Figure 2, the third point 4PT3 is the first pointer P
Address C of T1 matches). In this state flc, the operation of the internal combustion engine is started, and the outputs of the contact detector 2 and the measuring device 4 are sent to the central processing unit 1c via the note 110 circuit 3 and the A/D converter 5t. The device 1 receives the contact signal from the contact detector 2 or the measurement data g from the measuring device 4:
Based on the pressure of each part of the engine body,? l! L or rotation speed, etc. (: When determining that there is an abnormality, the central processing unit l stores the time outputted by the clock device 7, abnormal items, and various measurement data strings in the first file in the abnormal state file of the storage device 6.
%ga point JP'rl.

Store the address C2 next to the address indicated by PT 3. At this time,
l@3 pointer PT a is updated (advance by one) and the address of the newly stored abnormal state history is set to the third pointer P.
Make T 3 as shown. Furthermore, the central processing unit 1
Every time an abnormality in the engine body is determined, the time, abnormality item, and measurement data string are stored in the address next to the address indicated by the lE3 point JPT3 in the abnormal state file. The display address of pointer PT3 is also sequentially advanced.

As mentioned above, in the internal storage area AC1 of the abnormal state file (see Figure 2C), the history of newly occurring abnormal states is sequentially stored after maintenance diagnosis work is performed. Figure 3 shows what happens when maintenance diagnosis is due again in the current state.

C1: Performs processing to send a history of newly occurring abnormal conditions. That is, the central processing unit 1 is the transfer command device 1
Step S: Monitor the input of a command signal of 0.
When a command signal is inputted via the serial transmission device 9, the command signal determines which island is the command e (see step SP2) 6, and if the command signal is not the command e ( = ends the process as is, but in the case of command e, the central processing unit 1 stores (-1 storage device 6) as shown in step 5P3C.
0 internal IEI point 'JPTI and third pointer PT
Do the addresses indicated by 3 and 3 match? Discern. At this time,
As shown in FIG. 2, the addresses indicated by the first point JPTI and the third pointer PT3 do not match, so proceed one step to the address 1 indicated by the first point 4PT1, as shown in step SP4. . Then, step SP 5 (2 indicates 5 Kame 2, the address indicated by the first point JPTI (: memory ζ
The contents of the abnormal state currently occurring are transmitted to the transfer command device 10c via the serial transmission device 91. Next, step SP
3gm back, 1st point 4PT1. ! : Determine whether the address indicated by g3 point 4PT3 matches.

In this way, the first point JPTI and the third point P
Until the address indicated by T3 matches, step SP
3 to SP 5 (: where indicated!l is repeated, and when the addresses indicated by the first point JPTI and the third point 4P↑3 match, the central l&control device 1 ends the transfer process. As a result, the transfer command device The 10th side ζ; is the 1st side in FIG.
The new (
: Retractable n Nine abnormal state history is all transferred ~ At this time,
I: in the abnormal state file after transfer is the third point 74PT3 (aglboyy*PT))O from the first address.
The abnormal state history is stored up to the indicated address T9, and the storage area Bt after that is no longer stored. Examples include a pocket computer 4, a computer connected by a telephone line, or another microcomputer. When using a pocket combinator, even engine maintenance personnel, sales personnel, and people with no knowledge of combinators can simply enter command signals, making it easy to use (: Abnormal status history can be obtained. If you read it silently over a telephone line, etc., it will be immediately available (2 remote locations such as Rikishima and the above abnormal conditions, 2 biographies will be obtained fraudulently).

Further (:, If you connect with other microconvenience stores and build a state management system, ch, main computer 4
Even if the storage unit (for example, magnetic disk) of the host computer 4 loses its abnormal state history for some reason, the entire abnormal state history in the storage device filG can be retrieved as shown in Figure 4. .

That is, as shown in step 5 PIO, the central processing unit f1 monitors the input of the command signal number of the transfer command device 1O, and detects that command number 42 is input via the serial transmission device 9. Then, it is determined whether the command signal is command E (see step 5 PII). If it is not the command E, the process ends as is, but if it is the command E, the central processing unit 1 executes step 5P12C; Start address of the status file (2 setting Tru1) Next, as shown in step 5P13 (2. It is determined whether the addresses indicated by the second point 4PT2 and the third point 4PT3 inside the storage device 60 match. At this time , If the addresses indicated by IC2 point 4PT2 and recommended 3 pointer PT3 do not match 2, xfyls
P 14g 2 As shown, move the second pointer PT 21 one step forward (update the address, move down) - 7, and step 5 PI
5 (2) As shown, the content of the address indicated by C1IE2 point 4PT2 is transmitted via serial transmission!ifl!9, transfer command device 1O (-transmitted, then step sp 1st = return, and again the second point JPT2 and the third The Ling Island whose address indicated by the point JPT3 matches is determined.

In this way, until the second pointer PT 2 and the third pointer PT 3 match their indicated T addresses, step 5
By repeating the processes shown in P13 to P15, the abnormal state history stored in the abnormal state file is transferred to the transfer command device 10 (in FIG. Then, in step 5P13C, when the addresses indicated by the second point 4PT2 and the third point 4PT3 match, the central processing unit 1 ends the transfer process. Even if the abnormal state history disappears in step g;, the abnormal state history in the storage device rIt6 can be easily retrieved again, which improves the reliability of the device.

"Effects of the Invention" As explained above, the present invention includes a plurality of measuring devices that measure the pressure, temperature, rotation speed, etc. of each part of the engine body, and a timing device that detects when an abnormal state occurs in the engine body. a central processing unit that determines an abnormal state of the engine main body based on the output of each of the measuring devices and stores the time and abnormal data output from the timing device in a storage device; and a storage device C; The system is equipped with a transfer command device that outputs a command signal to the central processing unit to send out the abnormal state history through the serial transmission device, so the pressure in each part of the engine body,
Warm! , the output C of the measuring device that measures the rotational speed, etc.;
The central processing unit (C) determines the abnormality of the engine main body, and stores the abnormality data and the time output by the clocking device in a storage device, and also outputs the data to the central processing unit (C) and the central processing unit (C). When a maintenance diagnosis of an internal combustion engine is performed by sending the abnormal state history stored in the storage device to the transfer command device via the serial transmission device in response to the command signal of Records of past abnormal conditions can be quickly and easily retrieved, and based on this abnormal condition record, statistical judgments, data analysis at abnormal times, etc. can be greatly effective, and internal combustion engine The same reliability can be achieved.

[Brief explanation of the drawing]

Figures 1 through tR4 show an example of how the present invention is implemented. Figure flX1 is a schematic configuration diagram, and Figures 1 and 3 are explanatory diagrams showing the contents of the abnormal state file in the storage device 6. new(
2. Transfer processing of the abnormal state history that has occurred. The flow f1. Figure 4 is a flowchart 81 for explaining the process 31 for sending all the information of the abnormal state file 81...
... Central processing unit 2 ... Contact detector 4 ... Measuring device 6 ... Storage device 7 ... Timekeeping device 10 ...・Transfer command device
9...Series transmission device θ, T, E...Command signal.

Claims (1)

[Claims] A plurality of measuring devices measure the pressure, temperature, rotation speed, etc. of each part of the engine main body, a timing device detects when an abnormal state occurs in the engine main body, and a timing device that detects the occurrence of an abnormal state in the engine main body based on the output of each of the above measuring devices. a central processing unit that determines an abnormal state and stores the time and abnormal data output by the clock device in a storage device;
Abnormality record transmission for an internal combustion engine, comprising a transfer command device that outputs a command signal for transmitting the abnormal state history stored in the storage device via the serial transmission device to the central processing unit. Device.