JPH03271622A - Combustion controller - Google Patents

Abstract

PURPOSE:To simply judge a trouble part if a malfunction occurs in a circuit by providing memory means for detecting the malfunction in place of a control circuit forming element and storing it at each occurrence, and display means for sequentially continuously displaying all of a plurality of stored contents of the memory means by one ON operation of a check switch. CONSTITUTION:An apparatus body 2 has a microcomputer 5 for controlling a transceiver 4 and a body device, and a control circuit composing element 6 such as a solenoid valve, various sensors, etc., and the microcomputer 5 has memory means 5a for storing the contents of the malfunctions of the body three times in the past. On the other hand, A remote controller 1 has a transceiver 7, a remote control microcomputer 8, a check switch 9, and a display unit 10a. A microcomputer 8 has a memory 8a, a ROM 8b, and display means 10 has a display unit 10a and a ROM 8b. The unit 10a normally displays a clock and displays the content of the malfunction by encoding only at the time of displaying the content of the malfunction.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a combustion control device that controls a combustor such as a cooker after hot water is supplied.

Conventional technology In the control circuit of a combustion machine, failure of circuit components may lead to an accident, so the solenoid valve for combustion control is configured to close even if a circuit component such as a transistor or diode fails, thereby increasing safety. It is secured.

Problems to be Solved by the Invention Due to the above-described configuration, it is difficult to determine which part of the device is malfunctioning during repair, which increases running costs such as replacing circuit boards.

The present invention improves work efficiency by making it easy to determine the faulty part when repairing a circuit when an abnormality occurs.

Means for Solving the Problems Therefore, in order to remotely achieve the above object, the present invention provides a storage means for detecting an abnormality in a proper position of a control circuit component and storing it every time an abnormality occurs, a check switch, and a check switch. The present invention is configured to include display means for sequentially and continuously displaying all of the plurality of stored contents of the storage means by one ON operation of a switch.

Function: The combustion control device of the present invention sequentially and continuously displays all the contents of past abnormalities stored in the device on the display means by operating the CH7 switch.

Example Examples thereof will be described below with reference to the drawings.

FIG. 1 is a system diagram of one embodiment of a combustion control device.

The remote control 1 is connected to the device main body 2 via a two-core connecting cable 3. The device main body 2 includes a transmitting/receiving circuit 4, a microcomputer (hereinafter referred to as microcomputer 5) for controlling the main device, and control circuit components 6 such as a magnetic valve and various sensors. Furthermore, the microcomputer 5 is provided with a storage means 5a for storing up to three past abnormalities in the main body of the device.

On the other hand, the remote controller 1 includes a transmitting/receiving circuit 7 and a remote control microcomputer (hereinafter referred to as microcomputer 5) that controls the remote controller.
) 8, check switch 9, and display device 10a
is the provision. Further, the remote control microcomputer 8 has a memory 8a and a ROM section 8b, and the display means 10 is connected to the display device 10a and the ROM section 8b. In addition, the display device 1
0a normally displays a clock, and only when displaying the details of the error, the details of the error are coded and displayed.

FIG. 2 shows the packet structure of communication data. The communication data includes an address SA on the sending side, an address DA on the receiving side, a control word CW indicating the type of data,
DATA, which is the information string to be transmitted, and error detection code C
It is composed of RC. The protocol is such that the control word CW is set to 0 when transmitting operation details.

FIG. 3 shows a configuration diagram of an error packet sent from the main device when the check switch 9 is pressed on the remote control. The error packet is sent by the sender's address SA (in this case S
A must be the address of the main device), the address of the receiving side DA
(In this case, DA is the address of the remote control that pressed check switch 9), control word CW indicating the type of data, error number ERN indicating the order of occurrence of error code ER, and three-digit decimal error code E.
It consists of R1 and an error detection code CRC. Further, error packets are distinguished from information packets that communicate state changes such as switch operations using a control word CW, and the CW is 6 in the case of an error packet and 0 in the case of an information packet.

FIG. 4 shows an operation flowchart of the ROM unit 8b when displaying the details of abnormalities that have occurred in the main device in the past on the display device 10a. First, when the check switch 9 is pressed, the bit corresponding to the check switch 9 in the DATA part of the packet shown in FIG.
Send to. Next, the main unit 2 confirms that the bit corresponding to the check switch 9 in the DATA portion of the packet is set, and then transmits the error packet shown in FIG. 3 to the remote control 1. The error code (ER) here is
A code is shown in which abnormalities that occurred in the control circuit element 6 in the past are sequentially stored in the storage means 5a. Also, error k
(ERN) indicates the order of occurrence of anomalies, with ERN=1 being the newest anomaly, and 2.3 as the value increases, indicating past anomaly contents.

The main device 2 is configured to continuously send three past abnormality contents stored in the storage device 5a in response to receiving one operation signal of the check switch 9.

In FIG. 4a, when the check switch 9 is pressed in the remote control ROM section 8b, it is checked whether an error packet has been received (step St). This is error detection code C
It is checked that the RC is correct and that the control word CW of the received packet is 6. If CEC is correct and cw is 6, the error code ER and error number ERN of the error packet are saved in the memory 8a (step S2). Next, a flag is set to display an error code on the display device 10a (step S3).

In the abnormality display routine, first check the error display flag set in step 33 (step S4), if the flag is set, check whether the TMSTA flag is set (step S5), and if the flag is not set, check the TMSTA flag. In step S6), initials (IT) are placed in the timer (TM). (Step S7) This timer (TM) is a down counter that is decremented by the timer routine that passes every fixed period, and when it reaches zero, it starts counting. It is intended to stop.

Next, copy the error code ER saved in the memory 8a in (step S2) to the display buffer, and (step S8) next time, if TM exceeds and becomes 0, (
The display buffer copied in step S8) is left blank. (Step 510) Next, check whether there is a change in the error number (ERN) saved in the memory 88, that is, whether another error packet has been received.Step 511) If there is a change in the ERN, TMSTA
The flag is cleared (step 512). According to this configuration, when the first error packet is received (
38), (S9) displays the first error code during T1, and if TM=O after T1, until the second error code comes (step S9), (step 510)
As a result, the display becomes blank, and when the second error code is received (step 511), the TMSTA flag is cleared in (step 512), and when the abnormality display routine is passed again (step 35) to (step S7)
As a result, T is initialized in the timer TM and a second error code is displayed. The same holds true when the third error packet is received. To end the abnormality display, set the error clear bit in the DATA section shown in Figure 2 from the device main body 2 and send it to the remote controller 2.
The reception routine of the M section 8b resets the error display flag and returns to the clock display.

With the above configuration, it is possible to sequentially and continuously check past abnormalities that have occurred in the main body of the device by one operation of the Chenox inch.

Effects of the Invention Due to the configuration described above, the combustion control device of the present invention can immediately recognize the presence or absence of a failure and the failure part with a simple operation during repair and inspection when a failure occurs. Even in the case of an abnormal condition that rarely occurs, the past abnormalities can be memorized and displayed, making it easy to recognize them and making it easier to operate the check switch only once.

[Brief explanation of drawings]

FIG. 1 is a system diagram of an embodiment of the present invention, FIG. 2 is a packet configuration diagram of communication data, FIG. 3 is an error packet configuration diagram, and FIG. 4 is a flowchart of the same operation. 5a... Storage means, 6... Control circuit component, 9... Check switch, 10...
...Display means.

Claims (1)

[Claims] A storage means for detecting an abnormality in a proper location of a control circuit component and storing it every time an abnormality occurs; and a check switch; and a check switch that sequentially sequentially sequentially records all of the plurality of stored contents of the storage means by turning on the check switch once. A combustion control device equipped with a display means for displaying information.