JP2001022402A - Operation control method, operation controller and gas heater provided with operation controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation control method and an operation controller, which can prevent an error occurred owing to the mix of noise into basic data when power is supplied and to provide a gas heater provided with the operation controller. SOLUTION: Relating to an operation controller 20, an EEPROM 22 where hexadecimal data on the operation control of a device to be controlled such as a blast fan 10 is installed, hexadecimal data are read from the EEPROM 22 when it receives a power supply signal generated when power is supplied, and the operation of the device to be controlled is controlled based on hexadecimal data. When hexadecimal data which are read from the EEPROM 22 is judged to be right or wrong and the error is judged, hexadecimal data are read again from the EEPROM 22 irrespectively of a power supply signal and hexadecimal data are judged to be right or not.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control method, an operation control device, and a gas heating apparatus equipped with the operation control device, which read out basic data relating to operation control and the like from a memory when a power supply is turned on, and determine whether the basic data is correct or not. About the machine.

[0002]

2. Description of the Related Art Generally, for example, a gas fan heater is
Equipped with a memory that stores basic data related to operation control of the controlled device, etc., when receiving a power-on signal generated at the time of power-on, reads the basic data from the memory, and controls the operation of the controlled device based on this basic data Operation control device.

In this type of operation control device, when a power plug is inserted and the power is turned on, a microcomputer (hereinafter referred to as a microcomputer) of the operation control device is EEPR.
Basic data is read from a nonvolatile memory such as an OM via a communication line or the like, and the read basic data is determined based on whether or not a check code included in the basic data matches a check code calculated from the basic data. Is performed. That is, when the check codes match, the microcomputer starts operation control of the controlled device based on the basic data. When the check codes do not match, the microcomputer outputs an error and displays an error display or the like. Do.

[0004]

However, in the conventional operation control device, for example, noise (noise) is added to the basic data read by the microcomputer from the memory via a communication line or the like.
Erroneous data is sent to the microcomputer, and the correct / incorrect judgment may determine that the check codes do not match, and the microcomputer outputs an error and displays an error even though it is not a failure Sometimes. As a countermeasure in this case, for example, there is a countermeasure to pull out the power plug from the outlet once, then plug the power plug in again and let the microcomputer read the basic data from the memory again, but the user recognizes this countermeasure. If not, the user may not only misunderstand that the device is out of order, but also take time to remove and insert the power plug even if the user knows the countermeasure.

An object of the present invention is to provide an operation control method, an operation control apparatus, and an operation control method which solve the above-mentioned problems of the prior art and can prevent an error caused by noise in basic data when power is turned on. An object of the present invention is to provide a gas heater provided with the operation control device.

[0006]

In order to achieve the above object, the invention according to claim 1 stores basic data relating to operation control of a controlled device when a power-on signal generated at power-on is received. In the operation control method for reading the basic data from the memory to be performed and controlling the operation of the controlled device based on the basic data, when it is determined that the basic data read from the memory is erroneous, it is determined that there is an error. The operation control method is characterized in that the basic data is read out again from the memory and correct / incorrect is determined irrespective of a power-on signal.

According to a second aspect of the present invention, when a power-on signal generated at the time of power-on is received, the basic data is read from a memory for storing basic data related to operation control of the controlled device, and based on the basic data. In the operation control method for controlling the operation of the controlled device, the basic data is configured to be able to be divided into a plurality of blocks, and the basic data read from the memory is correctly or incorrectly determined for each of the blocks to determine that there is an error. In this case, irrespective of the power-on signal, only the basic data of the block determined to have the error is read out again from the memory, and only the basic data of the block is determined to be correct. Is the way.

According to a third aspect of the present invention, there is provided a memory in which basic data relating to operation control of the controlled device is stored.
Upon receiving a power-on signal generated at the time of power-on, the basic data is read from the memory, and an operation control device that controls the operation of the controlled device based on the basic data corrects the basic data read from the memory. A control unit for re-reading the basic data from the memory regardless of the power-on signal and determining whether the basic data is correct or not, if the determination is that there is an error, Device.

According to a fourth aspect of the present invention, there is provided a memory in which basic data relating to operation control of the controlled device is stored.
When receiving a power-on signal generated at the time of power-on, the basic data is read from the memory, and the basic data is divided into a plurality of blocks in an operation control device that controls the operation of the controlled device based on the basic data. When the basic data read from the memory is determined to be correct or incorrect for each block and determined to be erroneous, only the basic data of the block determined to be erroneous is determined regardless of the power-on signal. Is read out from the memory again, and a control means for judging only the basic data of this block correctly or incorrectly is provided.

According to a fifth aspect of the present invention, there is provided a controlled device, and a memory storing basic data relating to operation control of the controlled device and the like, wherein the memory is provided when a power-on signal generated at power-on is received. Read out the basic data from, and an operation control device that controls the operation of the controlled device based on the basic data.
The operation control device reads the basic data again from the memory irrespective of the input signal and determines whether the basic data is correct or not, if the basic data read from the memory is determined to be correct or incorrect and determined to be erroneous. A gas heater characterized by determining.

According to a sixth aspect of the present invention, there is provided a controlled device, and a memory storing basic data relating to operation control of the controlled device, wherein the memory is provided when a power-on signal generated at power-on is received. Read basic data from
In a gas heater including an operation control device that controls the operation of the controlled device based on the basic data, the basic data can be divided into a plurality of blocks, and the operation control device If the read basic data is determined to be correct for each of the blocks and it is determined that there is an error, only the basic data of the block determined to have the error is read out again from the memory, and only this basic data is determined to be correct. A gas heater characterized by the above.

According to these inventions, if the basic data read from the memory is determined to be correct and incorrect, and if there is an error, the basic data is read again from the memory and determined to be correct regardless of the power-on signal. Even if it is determined that there is an error due to, for example, noise in the basic data read first from the memory, if the basic data read again is determined to be correct, the controlled device is determined based on the basic data. Operation can be controlled, and occurrence of an error due to noise mixing in the read basic data can be prevented.

According to the second, fourth or sixth aspect of the present invention, the basic data is configured to be able to be divided into a plurality of blocks, and the basic data read from the memory is judged to be correct or incorrect for each block, and if there is an error. If it is determined, regardless of the power-on signal, only the basic data of the block determined to have the error is read out again from the memory, and only the basic data of this block is determined to be correct. Only the block determined to have an error need be read, so that the reading operation can be simplified and the reading time can be reduced as compared with the case where all the basic data is read.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral H indicates a gas fan heater (gas heater). The gas fan heater H is covered by an outer case 1, and a combustion chamber 3 is formed inside the outer case 1, and a main burner 5 is provided in the combustion chamber 3. The outside of the combustion chamber 3 is surrounded by a shelter 7, and a high limit thermistor 8 and a temperature fuse 9 are mounted on a top surface of the shelter 7.

At the lower part of the room surrounded by the shelter 7, a blower fan 10 composed of a cross flow fan is provided. A top plate 11 is provided above the shelter 7, and a main substrate 12 is attached below the top plate 11. A front panel 13 is provided in front of the shelter 7, and an operation / display panel 3 is provided above the front panel 13.
1 is provided, and an outlet 14 is formed at a lower portion of the front panel 13, and a louver 15 is attached to the outlet 14. An air inlet 16 is formed in the back of the outer case 1, and an air filter 17 is attached to the air inlet 16. Reference numeral 18 denotes a power plug.

During the heating operation, an operation switch (not shown) on the operation / display panel 31 is pressed. Then, the main burner 5 operates and the blower fan 10 is driven. Then, the air taken in through the air filter 17 flows as shown by a solid line, and becomes primary air for combustion, and becomes main burner 5.
The secondary air is supplied to the outlet of the main burner 5, whereby a flame 19 is formed in the combustion chamber 3. Then, the combustion gas from the combustion chamber 3 and the air that cools the top surface of the shelter 7 merge, are sucked into the blower fan 10, and are blown through the outlet 14.

As shown in FIG. 2, the operation control of the gas fan heater H is performed by an operation control device 20 mounted on the main board 12, and the operation control device 20 is a microcomputer as control means. (Hereinafter referred to as a microcomputer) 21 and an EEPROM (memory) 2 connected to the microcomputer 21 via a communication line (communication circuit) L.
2 and a ROM 23, RA
M24 is provided.

The operation / display panel 31 is connected to the operation control device 20. The operation / display panel 31 includes an operation unit 32 that allows a user to perform a setting operation and the like and a display unit 33 that displays an error and the like. The operation control device 20 includes, as a detection unit, a rotation speed sensor 4 that detects the rotation speed of the blower fan 10 in addition to the high limit thermistor 8.
2 and the like, and the blower fan 1
In addition to 0, a proportional valve 52 for controlling the amount of fuel gas supplied to the main burner 5 is connected.

FIG. 3 shows an EEPROM (memory) 22.
As shown, hexadecimal data represented by hexadecimal numbers (basic data)
Hex data is stored in multiple blocks.
.., B0, B1, B2,. each
For example, 16 addresses are set in the block, and each address is set.
Hexadecimal data is stored corresponding to the dress. No. 1
Hexadecimal data corresponding to the 15th to 15th addresses (for example,
For example, in block B0, "N₀"-" N_E))
For example, the rotation speed of the blower fan, the opening of the proportional valve,
It shows a predetermined set value related to the number of errors, the operation time, and the like.
Hexadecimal data on the number of combustion errors and operation time is successive
It is rewritable. The 16th address of each block
Hexadecimal data (for example, in block B0
"N_F)) Is stored in the EEPROM 22 in advance.
Indicates the stored storage check code. This storage check
The hexadecimal data of the code is first to
Fifteen hexadecimal data corresponding to the fifteenth address
(For example, in block B0, "N ₀"-" N_E))
It is a thing.

The hexadecimal data stored in the EEPROM 22 is read out by the microcomputer 21 of the operation control device 20 when the power plug 18 is inserted and the power is turned on, and is judged to be correct.

The operation of the operation control device 20 when the power is turned on will be described in detail.

First, as shown in FIG. 4, when the power plug 18 of the gas fan heater H is inserted into the outlet and the power is turned on (S11), a power-on signal is generated, and this power-on signal is used for operation control. It is transmitted to the microcomputer 21 of the device 20. When the microcomputer 21 receives the power-on signal, the microcomputer 21 first transmits the chip select signal to the EEPROM 22.
To start communication, read the hexadecimal data stored in the EEPROM 22 through the communication line L, and
(S12).

The microcomputer 21 creates a calculation check code for each block which is calculated by adding hexadecimal data corresponding to the first to fifteenth addresses (S
13). Then, for each block, a storage check code (for example, “N _F ” in block B0) included in the read hexadecimal data and a calculated check code (for example, “N ₀ + N ₁ + N ₂ +... + N” in block B0) _E ")
And judges whether the read hexadecimal data is correct or not (S14).

That is, when the stored check code and the calculated check code match in all the blocks B0, B1, B2,..., The microcomputer 21 determines that the read hexadecimal data is correct, and The operation control of the controlled device (the blower fan 10, the main burner 5, etc.) is started based on the progress data, the data from the operation unit 32 of the operation / display panel 31, the data from the detection unit, and the like. Execute the sequence (S1
5).

However, despite the fact that the hexadecimal data stored in the EEPROM 22 is accurate, the microcomputer 21 sends the data from the EEPROM 22 through the communication line L via the communication line L.
When the hexadecimal data is being read, erroneous hexadecimal data may be sent to the microcomputer 21 when noise is mixed in the hexadecimal data. If incorrect hexadecimal data is sent to the microcomputer 21, the incorrect hexadecimal data is added in step S13, and the calculated check code does not match the stored check code in the block containing the incorrect hexadecimal data. Becomes

The microcomputer 21 determines whether the calculated check code and the stored check code do not match (hereinafter, referred to as a block).
If there is a mismatch block),
It is determined that there is an error in the hexadecimal data, and it is checked whether the number of times the calculated check code and the stored check code do not match in any of the blocks (hereinafter, referred to as the number of mismatches) is the tenth (S16). ). The number of mismatches is 1
If less than 0 times, the microcomputer 21 clears (erases) all hexadecimal data stored in the RAM 24 (S
17) All the hexadecimal data is read again from the EEPROM 22 (S12), and a calculation check code calculated by adding the read hexadecimal data is created again (S13). The microcomputer 21 determines, for each block, whether or not the re-read storage check code matches the re-created calculation check code (S14), and determines the storage check codes of all the blocks B0, B1, B2,. If the check code matches, the normal sequence is executed thereafter (S15).

If the calculated check code and the stored check code do not match in step S14, the microcomputer 21 performs the above-described operations (steps S12 to S14, S
16, S17) is repeated. Then, step S16
When the number of mismatches between the stored check code and the calculated check code reaches the tenth, the microcomputer 21
Judging that the calculated check code and the stored check code did not match for a reason different from noise mixing, etc.,
An error is output and an error is displayed on the display unit 33 of the operation / display panel 31 (S18).

Another embodiment relating to the operation of the operation control device 20 when the power is turned on will be described. In this alternative embodiment, the operations of steps S21 to S26 and S29 are the same as steps S11 to S16 and S18 of the above-described embodiment.
It is almost the same as

When the power plug 18 of the gas fan heater H is inserted into the outlet and the power is turned on (S2).
1) A power-on signal is generated, and the power-on signal is transmitted to the microcomputer 21 of the operation control device 20. When the microcomputer 21 receives the power-on signal, it first sends a chip select signal to the EEPROM 22 to start communication, reads hexadecimal data stored in the EEPROM 22 via the communication line L, and stores it in the RAM 24 (S2).
2).

The microcomputer 21 creates a calculation check code for each block which is calculated by adding hexadecimal data corresponding to the first to fifteenth addresses (S
23). Then, as in the above-described embodiment, the correctness of the read hexadecimal data is determined based on whether or not the calculated check code matches the storage check code included in the read hexadecimal data for each block. S2
4). If the stored check code matches the calculated check code in all blocks B0, B1, B2,..., It is determined that the read hexadecimal data is correct, and the read hexadecimal data and the operation / display panel 31 are read.
Based on the data from the operation unit 32, the data from the detection unit, and the like, the operation control of the controlled device is started, and the normal sequence is executed (S25).

In this alternative embodiment, if there is a mismatched block in which the stored check code and the calculated check code do not match in step 24, the microcomputer 21
It is determined that there is an error in the read hexadecimal data, and it is checked whether or not the number of mismatches is the tenth (S26).
If the number of mismatches is less than 10, only the hexadecimal data of the mismatched block among the hexadecimal data of each block stored in the RAM 24 is cleared (erased) (S
27). Then, the microcomputer 21 designates the address of the hexadecimal data relating to the mismatched block, reads again only the hexadecimal data of the mismatched block from the EEPROM 22, and inputs (stores) the read hexadecimal data of the mismatched block into the RAM 24. (S28).

Then, the microcomputer 21 creates a calculation check code calculated by adding the hexadecimal data of the non-coincidence block read out again (S23). It is determined whether or not the stored check code matches (S24). When the calculated check code of the mismatched block and the stored check code match, the microcomputer 21 executes the normal sequence thereafter (S2).
5).

If it is determined in step S24 that the calculated check code for the mismatched block does not match the stored check code, the microcomputer 21 repeats the above-described operations (steps S23 to S24 and S26 to S28). When the number of mismatches between the calculated check code of the mismatched block and the stored check code reaches the tenth, the microcomputer 21 determines that the calculated check code and the stored check code do not match for a reason different from mixing of noise into hexadecimal data. Then, an error is output and an error is displayed on the display unit 33 of the operation / display panel 31 (S29).

In this embodiment, the hexadecimal data is configured to be divided into a plurality of blocks, and the microcomputer 21 of the operation control device 20 reads the 16-hexadecimal data read from the EEPROM 22.
Hex data for each block, and if it is determined that there is an error, only the hexadecimal data of the block determined to be erroneous is EEPR regardless of the power-on signal.
The microcomputer 21 reads the data again from the OM 22 and judges only the hexadecimal data of this block as correct or incorrect.
When the hexadecimal data is read again from the OM 22, only the blocks determined to be erroneous need to be read, so that the read operation can be simplified and the read time can be reduced as compared with the case where all the hexadecimal data is read. it can.

According to the above two embodiments,
The microcomputer 21 of the operation control device 20 includes an EEPROM 22
If the hexadecimal data read from the EEPROM 22 is correct and erroneous and it is determined that there is an error, the hexadecimal data is read out again from the EEPROM 22 regardless of the power-on signal, and the correctness is determined.
Even if it is determined that there is an error due to, for example, noise mixed in the hexadecimal data, if the hexadecimal data read out again is correct, the operation of the controlled device can be controlled based on the hexadecimal data. Therefore, occurrence of an error due to noise mixing in the hexadecimal data and the like is prevented, and an operation for causing the microcomputer 21 to read the hexadecimal data again becomes unnecessary, so that usability can be improved.

Although the present invention has been described based on one embodiment, it is apparent that the present invention is not limited to this. For example, in the present embodiment, an error is output when the storage check code and the calculated check code do not match for the tenth time, but the error need not be limited to the tenth time.

[0038]

According to the present invention, when the basic data read from the memory is judged to be correct by erroneous judgment,
Regardless of the power-on signal, the basic data is read again from the memory to determine whether it is correct or not. Therefore, even if it is determined that there is an error due to, for example, noise in the basic data read first from the memory, it is read again. If it is determined that the output basic data is correct, it is possible to control the operation of the controlled device based on the basic data, and it is possible to prevent the occurrence of an error due to noise in the read basic data.

According to the second, fourth or sixth aspect of the present invention, the basic data can be divided into a plurality of blocks, and if the basic data read from the memory is judged to be correct or incorrect for each block and an error occurs. If it is determined, regardless of the power-on signal, only the basic data of the block determined to have the error is read out again from the memory, and only the basic data of this block is determined to be correct. Only the block determined to have an error need be read, so that the reading operation can be simplified and the reading time can be reduced as compared with the case where all the basic data is read.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a gas fan heater according to the present invention.

FIG. 2 is a block diagram illustrating an operation control device and the like.

FIG. 3 is a diagram showing the relationship between addresses divided into blocks and hexadecimal data.

FIG. 4 is a flowchart showing the operation of the operation control device when the power is turned on.

FIG. 5 is a flowchart showing the operation of the operation control device when the power is turned on according to another embodiment.

[Explanation of symbols]

 H Gas fan heater 8 High limit thermistor 10 Blower fan 20 Operation control device 21 Microcomputer (microcomputer) 22 EEPROM 42 Revolution sensor 52 Proportional valve L Communication line

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3L028 EA01 ED04 5B018 GA06 KA01 KA12 NA06 QA11 RA04 RA11 5H209 AA11 DD11 FF02 GG04 HH17 JJ01 JJ09

Claims (6)

[Claims] When receiving a power-on signal generated at the time of power-on, the basic data is read from a memory for storing basic data relating to operation control of the controlled device, and the controlled device is controlled based on the basic data. In an operation control method for controlling operation, if the basic data read from the memory is determined to be correct and incorrect, and if it is determined that there is an error, the basic data is read again from the memory regardless of the power-on signal to determine correctness. An operation control method comprising: 2. Upon receipt of a power-on signal generated at power-on, the basic data is read from a memory storing basic data relating to operation control of the controlled device, and the controlled device is controlled based on the basic data. In an operation control method for controlling operation, the basic data is configured to be able to be divided into a plurality of blocks, and if the basic data read from the memory is determined to be correct or incorrect for each of the blocks, it is determined that there is an error. An operation control method characterized in that only basic data of a block determined to have an error is read out again from the memory irrespective of a signal, and only the basic data of the block is determined to be correct. And a memory for storing basic data relating to operation control of the controlled device. Upon receiving a power-on signal generated at power-on, said basic data is read from said memory, and based on said basic data. In an operation control device that controls the operation of the controlled device, when it is determined that the basic data read from the memory is erroneous and there is an error, the basic data is read from the memory regardless of the power-on signal. Read it again,
An operation control device comprising control means for determining whether the basic data is correct. 4. A memory for storing basic data relating to operation control of the controlled device and the like. When a power-on signal generated at the time of power-on is received, the basic data is read from the memory, and based on the basic data. In the operation control device that controls the operation of the controlled device, the basic data is configured to be divided into a plurality of blocks, and the basic data read from the memory is determined to be correct or incorrect for each of the blocks, and is determined to have an error. In this case, regardless of the power-on signal, only the basic data of the block determined to have the error is read again from the memory,
An operation control device comprising a control unit that determines whether the basic data of this block is correct or not. 5. A controlled device and a memory in which basic data relating to operation control of the controlled device and the like are stored, wherein the basic data is read from the memory when a power-on signal generated at power-on is received. An operation control device that controls the operation of the controlled device based on the basic data, wherein the operation control device determines whether the basic data read from the memory is correct or incorrect and has an error. The gas heater, wherein, when the determination is made, the basic data is read again from the memory regardless of the input signal, and the basic data is determined to be correct. 6. A controlled device and a memory in which basic data relating to operation control of the controlled device and the like are stored, and when receiving a power-on signal generated at the time of power-on, reading the basic data from the memory, An operation control device that controls the operation of the controlled device based on the basic data, wherein the basic data is configured to be divided into a plurality of blocks, and the operation control device If the read basic data is determined to be correct for each of the blocks and it is determined that there is an error, only the basic data of the block determined to have the error is read out again from the memory, and only this basic data is determined to be correct. A gas heater characterized in that: