JPH0697406B2 - Equipment control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a control device for controlling a stationary device whose installation location can be freely changed, and particularly for control, various detection information during operation or A memory device that stores information such as calculation information is provided, and the memory device is driven by a backup power supply and information is continuously stored even while the power supply from the power line to the equipment is stopped. The present invention relates to a control device for an operating device.

[Prior Art] Recently, microcomputers have been incorporated in many devices to control complicated operations.

In the equipment equipped with such a microcomputer, in consideration of the fact that the usage state and usage tendency will be heard by individual users, in order to be able to control the most appropriate driving state in each usage state, There is a storage device that stores detected information such as detected temperature, information about operating time, habits of a user, and the like as data for control in a storage device.

The information stored in this way is generally used as a volatile storage device each time new information is given as the vehicle is driven.
Written in RAM.

In such equipment, to prevent stored information from being lost even when the equipment is out of operation or disconnected from the power line, a capacitor such as a capacitor is used as a backup power source for RAM. Is equipped with
Even when the equipment is not connected to the power line, the stored information is retained for a certain period of time that can be operated by the backup power source by the memory retention operation of the microcomputer. It can be read as.

[Problems to be Solved by the Invention] As described above, in the control device provided with the backup power source for holding the memory, the backup capacitor has a sufficient capacity corresponding to each device, Even if the device is disconnected from the power line, the stored information is not lost for a certain period of time (for example, 3 minutes to 30 minutes or more), but on the other hand, while the backup power supply is operating,
The stored information is used as control data. Therefore, for example, in the event of a failure or the like, even if an attempt is made to test the operating state of the device, once the device is connected to the power line and the capacitor starts up, the backup for the storage device acts for a certain period of time. It is difficult to easily determine whether the equipment is starting up correctly or whether an abnormality occurs after starting up.When performing repair service, wait until the backup power supply is discharged, It is necessary to provide a reset switch or a reset terminal for clearing the stored contents.

In this case, if it takes to wait until the discharge of the capacitor etc., it takes time for repair service, so some sort of reset means is needed to clear the stored contents, but a new reset switch is provided separately or multiple switches are used. In order to prevent erroneous operation by the user even if it is a hidden operation, those switches must not be easily operated from the outside, and they must be installed inside the casing or cover, etc. Has a problem in that they need to be removed and repair service cannot be easily performed.

The present invention relates to a control device for a device provided with a backup power source such as a capacitor for holding a memory of a volatile storage device, and is easily volatilized without being affected by the retention of the stored content by the backup power source. The purpose is to be able to set the sexual memory device to the initial state.

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

[Operation] In the present invention, when the operation switch is not operated,
When the installation state of the device is tilted or reversed so as to be in an abnormal installation state, the abnormal installation detection means detects it.

If the power switch, operation switch, various setting switches, etc. provided as operation switches are operated in this abnormal installation state, the information in the volatile storage device is deleted.

After that, when the equipment installation response is returned to normal and the equipment is operated, the control device starts the control as an initial state in which there is no information for operation control in the volatile storage device, so that the operation of the equipment is facilitated. If it can be grasped and there is an abnormal operation, it will be easy to find it.

[Effects of the Invention] The present invention can change the installation state of a device and operate an operation switch provided on the outside of the device without any special work on the inside of the casing of the device, The stored information in the volatile storage device can be deleted.

Therefore, the device can be easily returned to the initial state or the like without being affected by the backup power source, so that the inspection or the like can be performed quickly.

EXAMPLES Next, the present invention will be described based on examples.

FIG. 2 shows a schematic configuration of the gas warm air heater 1. The gas warm air heater 1 includes an air circulation passage 10 and a fuel supply passage 20.
And a control device 30.

The air circulation path 10 is formed by a casing 10a, and air is sucked from the suction port 12 provided with the filter 11 by the operation of the convection fan 13. A part of the air sucked into the casing 10a is an air guide tube 14 as combustion air.
Nozzle 21 installed in the air guide tube 14 guided by
It is supplied to the fuel mixing chamber 15 together with the fuel gas ejected from. The fuel gas mixed with air in the fuel mixing chamber 15 is
It burns in the combustion chamber 16a after passing through the flame port of the burner 16, the combustion gas is mixed with other air sucked from the suction port 12 in the air mixing chamber 17, and is heated by the convection fan 13 as warm air as a warm air outlet 18 Is blown into the room from.

The fuel supply path 20 guides the fuel gas supplied from a fuel supply source (not shown) to the above-mentioned nozzle 21 by the gas pipe 22, and the gas pipe 22 is provided with a dual solenoid valve from the upstream side. 23 and a main solenoid valve 24, a governor 25 for keeping the supply gas pressure constant, and a proportional valve 26 for controlling the gas supply amount are provided respectively, and the upstream side and the downstream side of the proportional valve 26 have a bypass provided with a flow rate adjusting screw 27. It is connected by a pipe 27a.

In the combustion chamber 16a, the spark electrode 28 for ignition is used.
And a thermocouple 29 for detecting the combustion temperature for controlling the convection fan 13 and detecting a misfire.

The gas warm air heater 1 having the above configuration is controlled by the control device 30.

As shown in FIG. 1, the control device 30 mainly includes the microcomputer 40. In addition to the above configuration, the temperature sensor 31 for detecting the indoor temperature and the installed state of the gas warm air heater 1 are normal. Fall switch 32 for detecting whether or not
An operation unit 50 for setting and operating the operating state of the gas warm air heater 1 is provided, and the microcomputer 40 determines the gas warm air heater 1 having the above-described configuration in accordance with an operation signal from the operation unit 50. And the proportional valve 26 according to the setting state of the operation unit 50 to control the burner 16
The combustion amount is adjusted, and the combustion state of the convection fan 13 is controlled.

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

Microcomputer 40 (hereinafter referred to as "microcomputer 40")
The central processing unit 41 (CP
U), a ROM 42 that stores an operating program, a RAM 43 that temporarily stores various data under control, a clock circuit 45 for timer operation, an I / O port 46 for various input / output, and a microcomputer 40 Externally, a display circuit 47 for displaying time, etc., and a backup circuit for backing up the CPU 41, ROM 42, RAM 43, and clock circuit 45 when the control device 30 is disconnected from the power line or in the event of a power failure. There is a capacitor 48 that serves as a power source for the power source, and a diode 49 is inserted between the capacitor 48 and the power source unit 33 to prevent the charge charged in the capacitor 48 from flowing back to the power source unit 33.

In addition, when the microcomputer 40 is operating normally, the control device 30 stops the time-up by a signal sent by the CPU 41, and when an abnormality occurs in the operation of the microcomputer 40, the CP
When the signal from U41 is stopped, the time goes up and CPU41
A watchdog timer 34 that sends a reset signal to is provided.

As shown in FIG. 3, the operation unit 50 includes an operation switch 51, a temperature adjuster 52 including a slide volume or a pair of switches, and a timer setter 53 including several switches.

In the control device 30, sequence control is performed by operating the operation switch 51 in accordance with the convection fan 13 and the spark electrode 28.
And the ignition control of the burner 16 by controlling each solenoid valve 23, 24,
Fire extinguishing control is performed in a predetermined sequence,
When the timer operation by the clock circuit 45 for configuring the timer function for performing the timer operation and the program timer function is set, according to the preset time according to the setting state by the timer unit setter 53. Automatically starts heating operation.

In this embodiment, two types of operations are provided as the timer operation, and the first timer starting operation is the clock circuit.
The normal timer operation that starts operation at the set time ts set to 45, and the second timer start operation is the set time.
The advance timer operation for starting the operation before ts is set respectively, and any timer start operation is selected according to the user's intention by the timer changeover switch (not shown) provided in the timer setting unit 53. You can

Here, the advance timer operation is to start the heating operation before the set time ts so that the temperature in the room becomes the set temperature Ts set by the temperature setter 52 at the set time ts. Time one hour before ts (hereinafter "preceding time")
It is determined as follows based on the room temperature detected by the temperature sensor 31 at tp.

In the preceding timer operation, the time taken for the temperature to increase from the detected temperature (hereinafter referred to as the "preceding temperature") Tp detected at the preceding time tp to the set temperature Ts during each operation is measured each time, and at the preceding time tp Elapsed time ta with the preceding temperature Tp
Is stored as

Then, the preceding temperature Tp during the next preceding timer operation is
The preceding temperature Tp during the previous preceding timer operation stored in
₀ compared to calculates the current required time tx from the elapsed time ta ₀ last being also stored in the RAM43 based on the difference, start the heating operation before only require time tx calculated from the set time ts I am trying to do it.

On the other hand, in the present embodiment, the gas warm air heater 1 has an appropriate installation state designated so as to be installed on a substantially horizontal floor surface F as shown in FIG. If 1 is tilted or tilted, it can be detected by the fall switch 32.

This overturn switch 32 is, for example, one in which two electrodes are provided in a closed container made of an insulating material such as glass, and movable mercury is sealed in the closed container.
However, as shown by the solid line in Fig. 4, only when the airtight container is normally installed on the floor F and the closed container is at a certain angle, the electrodes are electrically connected by mercury and the electrodes are closed and turned on. In this state, as shown by the alternate long and two short dashes line in FIG. 4, when the electrodes are installed at a certain angle with respect to the floor surface F, the electrodes are in an off state with the electrodes open, and an abnormality in the installation state is detected.

The overturn switch 32 is a detection means mainly provided in the microcomputer 40 to prevent combustion in an abnormal installation state.The microcomputer 40 normally burns when an abnormal installation state is detected. In addition, when the abnormal state of the installation is detected while the gas warm air heater 1 is in operation (during heating), each valve is closed and the supply of fuel gas is stopped to ensure safety. .

In the present embodiment, the tipping switch 32 is also used to delete the stored information in the RAM 43 that stores each data at the time of the previous operation in the preceding timer operation.

This is because the RAM 43 is provided with the capacitor 48 as a backup power source, and therefore, when the gas hot air heater 1 is inspected, if the information stored in the RAM 43 is present, normal operation is performed. This is to delete it because it becomes difficult to determine whether or not it is present.

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

In a state where the operation switch 51 is not operated, the gas warm air heater 1 is tilted, and the overturn switch 32 detects an abnormal installation state, and the operation switch 51 is operated while maintaining the state, When it is continued for a fixed time t (for example, 10 seconds), the RAM 43 is cleared and the stored previous preceding temperature Tp ₀ and previous elapsed time ta ₀ are deleted.

The microcomputer 40 is in a standby state while power is supplied from the power supply unit 33, and if power supply from the power supply unit 33 is stopped due to a power failure or the plug 33a is removed from the outlet,
After shifting to the power failure detection operation, only the data holding operation of the RAM 43 is performed.

The operation will be described below with reference to FIG.

When the plug 33a for supplying electric power to the power supply unit 33 is not connected to the outlet (in Step 1
O), electric power is not supplied to the microcomputer 40 and the like of the control device 30, and the RAM 43 is supplied with electric power only while the capacitor 48 has a charged electric charge and maintains the stored data.

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

When the RAM 40 is not backed up by the capacitor 48 when the microcomputer 40 is activated (NO in step 3), the standby state is entered (step 10).

When the RAM 43 is backed up by the capacitor 48 when the microcomputer 40 starts up (YES in step 3), it is determined whether or not the overturn switch 32 detects an abnormal installation state, and the abnormal installation state is detected. If it is not turned on and is in the on state (NO in step 4), the standby state is entered as in the above (step 10).

Conversely, when the microcomputer 40 is activated and the operation switch 51 has not been operated yet, and the overturn switch 32 detects an abnormal installation state and is in the off state (YES in step 4), it remains as it is. Further operation switch 51 in the state
If it is determined that the operation switch 51 has not been operated (NO in step 5), the standby state is set (step 10).

When the overturn switch 32 detects an abnormal installation state and the operation switch 51 is operated thereafter while maintaining the abnormal installation state (YES in step 5), the duration of the state is clocked and is within a certain time t. If (step 6
, NO), go to step 4, step 4,
If steps 5 and 6 are repeated and NO is obtained in step 4 or step 5 in the meantime, the process proceeds to step 10 to enter the standby state.

When the overturn switch 32 detects an abnormal installation state and the operation switch 51 is further operated for a certain time t (YES in step 6), the signal from the CPU 41 to the watchdog timer 34 is stopped, The watchdog timer 34 has timed up, and conversely the CPU 4 from the watchdog timer 34
A reset signal is sent to 1.

For this reason, since the microcomputer 40 performs the initial operation by the reset operation of the CPU 41, the information such as the previous preceding temperature Tp ₀ and the previous elapsed time ta ₀ stored in the RAM 43 is deleted (step 7), and in that state Stand by (step 1)
0).

Once in the standby state, while the operation switch 51 is not operated (NO in step 11), the determination after step 4 is repeated.

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

As a result, even if the data of the previous operation is stored in the RAM 43, the gas warm air heater 1 is tilted as shown by the chain double-dashed line in FIG. 4 to temporarily delete the stored information, and then,
When the gas warm air heater 1 is returned to the normal installation state and the operation switch 51 is operated again, the microcomputer 40 sets the RAM 43 to the initial state in which the previous preceding temperature Tp ₀ and the previous elapsed time ta ₀ are not stored. Since it starts up, in case of repair of operation,
It can be followed whether the operating sequence is appropriate.

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

Therefore, since the operation can be performed without being affected by the data, the inspection or the like becomes easy.

Further, in this embodiment, since the tipping switch for safety of the gas warm air heater is used, it is not necessary to increase the number of constituent parts, and the same configuration as the conventional one may be used.

Further, in the above embodiment, the operation switch is used as the operation switch, but another switch may be used as the operation switch.

In the above-described embodiment, the gas warm air heater deletes each information at the time of the previous operation, but it may be a heater using oil or electricity. Moreover, the stored information is not limited to each information at the time of the previous operation, and the set temperature of this time,
Anything such as the maximum temperature detected in the room may be used.

The device is not limited to the heater, but may be any device such as a cooler or a water heater whose installation state can be easily changed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a functional configuration of a control device for a gas hot air heater according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing a schematic configuration of a gas hot air heater according to the present embodiment. FIG. 4 is a perspective view of the gas warm air heater of this embodiment, FIG. 4 is a side view of the gas warm air heater of this embodiment, and FIG. 5 is a flow chart showing the operation in this embodiment. In the figure, 30 ... control device (device control device), 32 ... overturn switch (abnormal installation detection means), 43 ... RAM (volatile storage device), 48 ... capacitor (backup power supply),
51 …… Run switch (operation switch).

Claims (1)

[Claims] 1. A control device, which is provided in the device for controlling a device designated to be stationary and is operated by being connected to a power line, comprising an operation switch on the surface of the device, and A device control device comprising: a volatile storage device that stores information for controlling the operation of a device; and a backup power supply that supplies power to the volatile storage device when not connected to the power line, The abnormal installation detection means for detecting that the stationary state of is abnormal is provided, and when the operation switch is not operated, the abnormal installation detection means detects an abnormality, and while continuing the abnormal installation detection state, A control device for a device, wherein stored information stored in the volatile storage device is deleted when the operation switch is operated.