JPH03188502A - Device controller - Google Patents

Abstract

PURPOSE:To quickly perform inspection or the like by detecting abnormality by an abnormal installation detecting means to continue the detection state at the time of not operating an operation switch and deleting stored information of a non-volatile storage device at the time of operating the operation switch thereafter. CONSTITUTION:If a device is set to an abnormal installation state by inclination or reversion at the time of not operating an operation switch 51, this state is detected by an abnormal installation detecting means 32. When a power switch, an operating switch, various set switches, or the like provided as the operation switch is operated in this abnormal installation state, information in a non-volatile storage device 43 is deleted. When the device is returned to the normal installation state and is operated thereafter, a controller 30 regards the initial state, in which there is not information for operation control in the non-volatile storage device 43, to start the control. Thus, the operation of the device is easily recognized, and an abnormal operation or the like is easily found if occurring.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a control device for controlling stationary equipment whose installation location can be changed freely. Equipped with a memory device that stores information such as calculation information, the memory device is driven by a backup power source and continues to store information even when the power supply from the power line to the equipment is stopped. related to control devices for equipment that

[Background Art] Recently, microcomputers have been incorporated into many devices, making it possible to control complex operations.

In devices equipped with such microcomputers, in order to control the operating state most appropriate for each usage state, taking into account that the usage conditions and usage trends differ depending on the individual user, detection is performed during operation. Some devices store detection information such as temperature, operating time, user habits, etc. in a storage device as data for control.

Information stored in this manner is generally written into a RAM as a volatile storage device each time new information is provided during operation.

In order to prevent stored information from being lost even when the device is stopped or disconnected from the power line, a backup power source for the RAM is used, such as a capacitor. Even if the device is equipped with a power line and the device is not connected to the power line, the stored information will be retained for a certain period of time during which it can be operated by the backup power source due to the memory retention operation of the microcomputer. It is designed so that it can be read out as control data during the next operation.

[Problems to be Solved by the Invention] As described above, in a control device equipped with a backup power source for memory retention, the backup capacitor must have sufficient capacity according to each device. Even if the equipment is disconnected from the power line, it will remain unplugged for a certain period of time (e.g. 3 minutes to 30 minutes).
(minutes or more), the stored information will not be lost, but on the other hand, while the backup power supply is activated,
The stored information acts as control data. Therefore, even if you try to test the operating state of the equipment in the event of a failure, for example, once the equipment is connected to the power line and the capacitor starts up, there will be a constant Because the time is affected by backup to the storage device, it is difficult to easily determine whether the device is starting up correctly or whether an abnormality occurs after startup. It becomes necessary to wait until the backup power supply is discharged, or to provide a reset switch or reset terminal to clear the stored contents.

In this case, if you wait until the capacitor etc. discharges, the repair service will take time, so you will need some kind of reset means to clear the memory contents, but you may need to install a new reset switch separately or use multiple switches. Even if they are hidden, in order to prevent users from operating them incorrectly, these switches must not be easily operated from the outside, and must be installed inside the casing or cover, so that they cannot be operated easily. However, there is a problem in that it is necessary to remove these parts, and repair service cannot be performed easily.

In order to maintain the memory of a volatile storage device, the present invention provides a device that is equipped with a backup power source such as a capacitor, so that the memory content can be easily volatilized without being affected by the backup power source. The purpose is to be able to set the gender storage device to its initial state.

[Means for Solving the Problems] The present invention provides a control device that is installed in a device and is operated by being connected to a power line in order to control a device that is designated to be in a stationary state. an operation switch, a volatile memory device that stores information for controlling the operation of the device, and a backup power source that supplies power to the volatile memory device when not connected to the power line. The equipment control device is provided with abnormal installation detection means for detecting that the stationary state of the equipment is abnormal, and when the operation switch is not operated, the abnormal installation detection means detects the abnormality and detects the abnormality. The technical means is to delete the storage information stored in the volatile storage device when the operation switch is operated after that while continuing the installation detection state.

[Function] In the present invention, when the operation switch is not operated,
If the installation state of the equipment is tilted or turned upside down to create an abnormal installation state, it is detected by the abnormal installation detection means.

If the operating switches provided as operation switches, such as a power switch, an operation switch, various setting switches, etc., are operated in this abnormally installed state, the information in the volatile storage device will be deleted.

After that, when the installation state of the equipment is returned to normal and the equipment is operated, the control device starts controlling the equipment in the initial state where there is no information for operation control in the volatile storage device, making it easier to operate the equipment. If there is an abnormal operation, it will be easier to discover it.

[Effects of the Invention] The present invention can be used by simply changing the installation state of the equipment and operating the operation switch provided on the outside of the equipment, without having to make any special changes to the inside of the equipment's casing or the like. You can delete stored information in volatile storage.

Therefore, the device can be easily returned to its initial state without being affected by the backup power supply, so inspections and the like can be performed quickly.

[Example] Next, the present invention will be explained based on examples.

FIG. 2 shows a schematic configuration of the gas hot air heater 1, and the gas hot air heater 1 is composed of an air circulation path 10, a fuel supply path 20, and a control device 30.

The air circulation path IO is formed by the casing 10a, and air is sucked in through the suction port 12 provided with the filter 11 by the operation of the convection fan 13. Casing 1
A part of the air sucked into 0a is guided as combustion air by the air guide pipe 14, and together with the fuel gas jetted out from the nozzle 21 provided in the air guide pipe 14,
The fuel is supplied to the fuel mixing chamber 15. The fuel gas mixed with air in the fuel mixing chamber 15 passes through the flame port of the burner 16 and burns in the combustion chamber 16a, and the combustion gas is mixed with other air sucked in from the suction port 12 in the air mixing chamber 17. Then, the convection fan 13 blows out the warm air into the room from the hot air outlet 18.

The fuel supply path 20 guides fuel gas supplied from a fuel supply source (not shown) to the above-mentioned nozzle 21 through a gas pipe 22, and the gas pipe 22 includes a dual solenoid valve provided from the upstream side. 23, a main solenoid valve 24, a governor 25 that keeps the supply gas pressure constant, and a proportional valve 26 that controls the gas supply amount.
are provided respectively, and the upstream and downstream sides of the proportional valve 26 are communicated through a bypass pipe 27a provided with a flow rate adjusting screw 27.

The combustion chamber 16a is provided with a spark electrode 28 for ignition and a thermocouple 29 for detecting combustion temperature for controlling the convection fan 13 and detecting misfires.

The gas hot air heater 1 having the above configuration has a control device 30
controlled by

As shown in FIG. 1, the control device 30 is mainly composed of a microcomputer 40, and in addition to the above-mentioned configuration, a temperature sensor 31 for detecting indoor temperature and a gas hot air heater 1 are installed in a normal state. An overturning switch 32 for detecting whether or not the gas warm air heater 1 is turned over is provided, and an operating section 50 for setting and operating the operating state of the gas hot air heater 1. In addition to controlling the gas hot air heater 1 having the configuration according to a predetermined sequence, the proportional valve 26 is controlled according to the setting state of the operating section 50 to adjust the combustion amount of the burner 16 and to control the convection fan 13.
performs combustion control such as the operating status of the

The control device 30 is provided with a power supply unit 33 that is connected to an indoor wiring outlet and supplies necessary power to the convection fan 13, microcomputer 40, and the like.

The microcomputer 40 (hereinafter referred to as "microcomputer 40") includes a central processing bag 241 that is the center of the microcomputer 40.
(CPU), a ROM 42 that stores operating programs, a RAM 43 that stores various data during control, a clock circuit 45 for timer operation, an I10 port 46 that performs various input/outputs, and a microcontroller 40. Outside of the
A display circuit 47 for displaying time, etc.;
There is a capacitor 48 that serves as a backup power source for backing up U41, ROM 42, RAM 43, and clock circuit 45, and a capacitor 48 is provided between the capacitor 48 and the power supply section 33 to prevent the charge charged in the capacitor 48 from flowing back to the power supply section 33. A diode 49 is inserted for the purpose of

In addition, the control device 30 is configured such that when the microcomputer 40 is operating normally, the time-up is stopped by a signal sent from the CPU 41, and when an abnormality occurs in the operation of the microcomputer 40, the signal from the CPU 41 is stopped. A watchdog timer 34 is provided which sends a reset signal to the CPU 41 when the time is up.6 As shown in FIG. 52, and a timer section setting device 53 consisting of several switches.

In the control device 30, the sequence control is performed by controlling the convection fan 13, the spark electrode 28, and each electromagnetic valve 23, 24 according to the operation of the operation switch 51 to control the burner 1.
A clock circuit 45 performs the ignition control and extinguishing control of No. 6 in a predetermined sequence, as well as a clock function for timer operation and a clock circuit 45 for configuring the program timer machine 1m.
When the timer operation is set, the heating operation is automatically started according to the time preset according to the setting state by the timer section setting device 53.

In this embodiment, two types of timer operation are provided, and the first timer start operation is a normal timer operation that starts operation at the set time ts set in the clock circuit 45, and the second timer operation is As the timer starting operation, a preceding timer operation is set to start operation before the set time ts, and a timer changeover switch (not shown) provided on the timer section setting device 53 is used to switch the timer operation at any time according to the user's intention. The timer starting operation can be selected.

Here, the advance timer operation is to start heating operation before the set time ts in order to make the indoor temperature reach the set temperature Ts by the temperature setting device 52 at the set time ts. It is determined as follows based on the indoor temperature detected by the temperature sensor 31 at time tp one hour before ts (hereinafter referred to as "preceding time j").

In advance timer operation, during the operation, the indoor temperature detected at the preceding time tp (hereinafter referred to as "preceding temperature J") Tp
The time required for the temperature to rise from the set temperature Ta to the set temperature Ta is measured each time, and is stored as the elapsed time ta together with the preceding temperature Tρ at the preceding time tp.

Then, the preceding temperature Tp during the next preceding timer operation is set to RA
Compare with the preceding temperature TPo from the previous preceding timer operation stored in M43, and set the same temperature based on the difference (RAM4
The current required time tx is calculated from the previous elapsed time tao stored in No. 3, and the heating operation is started an amount of the required time tx calculated from the set time ts.

On the other hand, in this embodiment, as shown in FIG. 4, the gas hot air heater 1 is installed in an appropriate installation state so as to be installed on a nearly horizontal floor F, and the gas hot air heater 1 is If the aircraft 1 is tilted or fallen over, the overturn switch 32
It can be detected by

The overturning switch 32 is, for example, a closed container made of an insulator such as glass, provided with two electrodes, and movable mercury sealed in the closed container.
However, as shown by the solid line in Figure 4, only when the sealed container is properly installed with respect to the floor F and at a certain angle, the mercury creates a conductive state between the electrodes, closes the electrodes, and turns on. As shown by the three-dot chain line in Figure 4, if the device is installed at a certain angle above the floor F, it will be in the OFF state with an open gap between the electrodes, and an abnormality in the installation condition will be detected. .

The overturning switch 32 is mainly a detection means provided in the microcomputer 40 to prevent combustion in an abnormal installation state. While the gas hot air heater 1 is in operation (
If an abnormality in the installation condition is detected during heating (during heating), the fuel gas supply is stopped using the multiple valve to ensure safety.

In this embodiment, the overturning switch 32 is also used in the preceding timer operation to delete the information stored in the RAM 43 that stores data from the previous operation.

This is because the RAM 43 is equipped with a capacitor 48 as a backup power source, so when inspecting the gas hot air heater 1, if there is information stored in the RAM 43, normal operation will be performed. This is to delete it, since it becomes difficult to judge whether it exists or not.

Here, the abnormal installation detection state by the fall switch 32 is not used as is, but is used as follows in relation to the operation of the operation switch 51.

While the operation switch 51 is not operated, the gas hot air heater 1 is tilted, etc., so that the overturning switch 32 detects the abnormal installation state, and while maintaining that state, the operation switch 51 is operated, A certain period of time t (for example, 10
seconds), the RAM 43 is cleared and the previous preceding temperature Tpo and previous elapsed time t stored in the memory are stored.
Delete ao.

Note that the microcomputer 40 is in a standby state while power is being supplied from the power supply section 33, and when the power supply from the power supply section 33 stops due to a power outage or when the plug 33a is removed from the outlet, the microcomputer 40 shifts to a power outage detection operation. , performs only the data holding operation of the RAM 43.

The operation will be explained below based on FIG.

If the plug 33a for supplying power to the power supply section 33 is not connected to an outlet (NO in step 1), power is not supplied to the microcomputer 40 of the control device 30, etc., and the RAM 43 charges the capacitor 48. Power is supplied only as long as there is a charge to maintain stored data.

When the plug 33a is connected to an outlet (YES in step 1), power is supplied from the power supply section 33 to each part of the control device 30, and power is also supplied to the microcomputer 40 to start it up (step 2).

When the microcomputer 40 starts up, if the RAM 43 is not backed up by the capacitor 48 (No in step 3), it enters a standby state (step 10).
).

When the microcomputer 40 starts up, if the RAM 43 is backed up by the capacitor 48 (YES in step 3), it is determined whether or not the fall switch 32 has detected an abnormal installation state. If it is not turned on and is in the on state (No in step 4), it will go into a standby state in the same way as above (step 1).
0).

Conversely, when the microcomputer 40 is started and the operation switch 51 has not yet been operated, if the fall switch 32 detects an abnormal installation state and is in the OFF state (YES in step 4), the operation switch 51 is not operated. In this state, it is further determined whether or not the operation switch 51 is operated, and if the operation switch 51 is not operated (NO in Stella 15), it is determined whether or not the operation switch 51 is operated.
) and enters a standby state (step 10).

If the overturning switch 32 detects an abnormal installation state and the operating switch 51 is subsequently operated while maintaining that state (YES in step 5), the duration of that state is measured, and if it is within a certain time (No in step 6), proceed to step 4 and repeat steps 4.5.6, and if the result is NO in step 4 or step 5, proceed to step 1.
It shifts to 0 and enters a standby state.

If the fall switch 32 detects an abnormal installation state and the operation switch 51 is operated for a certain period of time (YES in step 6), the signal from the CPU 41 to the watchdog timer 34 is stopped. The watchdog timer 34 times up, and conversely, a reset signal is sent from the watchdog timer 34 to the CPU 41.

Therefore, since the microcomputer 40 performs the initial operation by the reset operation of the CPU 41, the previous preceding temperature 1゛p0 stored in the RAM 43 and the previous elapsed time jgl t
a (The information of the first rank is deleted (Step 7), and in that state it enters a standby state (Stella 710).

- After entering the standby state, unless the operation switch 51 is operated (NO in step 11), the determinations from step 4 onwards are repeated.

When the operation switch 51 is operated in the standby state (YES in step 11), operation is started in a predetermined sequence (step 12).

As a result, even if the data from the previous operation is stored in the RAM 43, the stored information is deleted by tilting the gas hot air heater 1 as shown by the two-dot chain line in FIG. When the gas warm air heater 1 is returned to its normal installation state and the operation switch 51 is operated again, the microcomputer 40
In M43, the previous preceding temperature Tpo and the previous elapsed time ta0
Since the device starts up in an initial state with no memory stored, it is possible to check whether the operating sequence is appropriate in case of operation repair, etc.

As described above, according to the present invention, even if data is stored in a volatile storage device equipped with a backup power source, the data can be deleted by handling the device according to a predetermined procedure.

Therefore, since operation can be performed without being influenced by data, inspections and the like become easier.

Further, in this embodiment, since a fall switch is used for the safety of the gas hot air heater, there is no need to increase the number of components, and the same configuration as the conventional one may be used.

Further, in the above embodiments, the operation switch is used as the operation switch, but other switches may be used as the operation switch.

In the above embodiment, a gas hot air heater is shown in which each information from the previous operation is deleted, but it may also be used for oil or electric heaters, and the stored information may be deleted from the previous operation. It is not limited to each information of the time, but the current setting temperature,
It can be anything, such as the maximum temperature detected in the room.

Further, the device is not limited to a heater, but may be any device that can easily change the installation state, such as a cooling device or a water heater.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the functional configuration of a control device for a gas hot air heater according to an embodiment of the present invention, FIG. 2 is a schematic diagram showing the schematic configuration of a gas hot air heater according to the present embodiment, and FIG. The figure is a perspective view of the gas hot air heater of this embodiment, FIG. 4 is a side view of the gas hot air heater of this embodiment, and FIG. 5 is a flowchart showing the operation in this embodiment. In the figure, 30...control device (equipment control bag, 32...
・Overturning switch (abnormal installation detection means), 43...RA
M (volatile memory device), 48... capacitor (backup power supply), 51... operation switch (operation switch). Figure 3

Claims (1)

[Scope of Claims] 1) A control device that is installed in a device to control a device designated to be in a stationary state and is operated by being connected to a power line, and includes an operation switch on the surface of the device. and a control device for equipment, comprising a volatile storage device that stores information for controlling the operation of the equipment, and a backup power source that supplies power to the volatile storage device when it is not connected to the power line. , an abnormal installation detection means is provided for detecting that the stationary state of the device is abnormal, and when the operation switch is not operated, the abnormal installation detection means detects the abnormality and continues the abnormal installation detection state. A control device for equipment, characterized in that when the operation switch is operated after that, the storage information stored in the volatile storage device is deleted.