JPH0330881B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic driving control device that prevents data during driving from being erased even if a keyboard switch is accidentally touched while driving or temporarily stopped.

In automatic driving control devices, it is important to retain data during driving. For example, in a clothes dryer that detects the inlet and outlet temperatures of hot air and determines the completion of drying based on the temperature change, it is difficult to determine which course of operation to follow among various operating courses with different set temperatures. It is necessary to retain data regarding whether the system is operating properly, the time it takes for the outlet temperature to reach a constant state, the temperature at that time, the current temperature, etc. until the end of the operation. However, if the data is erased when the keyboard is accidentally touched while driving or temporarily stopped, subsequent driving will not proceed normally.

An object of the present invention is to prevent the microcomputer from accepting the key signal even if the keyboard is accidentally touched during operation or when the vehicle is temporarily stopped, thereby preventing data during operation from being lost.

In order to achieve the object, the automatic driving control device of the present invention maintains the program in a paused state in response to an input signal from the stop key while the program is being executed, and also maintains the program in a suspended state in response to an input signal from the operation data change key. Prohibits the acceptance of input, and further,
In response to an input signal from the stop key in the temporary stop state, the contents of the RAM are returned to the state at power-on, and input from the operation data change key is accepted.

That is, even if the keyboard is touched by mistake during operation or while stopped, the program will not be changed.

Furthermore, if the stop key is operated again during a temporary stop, the program returns to the state when the power was turned on, so a new program can be started using the operation data change key.

In addition, when the power is turned on, a predetermined program is
By writing it to RAM, in the configuration of the present invention, if the stop key is operated twice, the state returns to the state when the power was turned on, that is, the state in which the predetermined program was set, so the predetermined program can be set again. You can start the program immediately without having to do anything.

To explain based on the figure below, 1 is a clothes dryer having a clothes loading door 2 on the front, and above this door there is a main switch 3 for turning on and off the power, and a dryness level at the end of the automatic detection course. a dryness adjustment knob 4 for adjusting the temperature, a keyboard 5 for course setting to set time or temperature, a fluorescent display tube 6 for time display, a fluorescent display tube 7 for temperature display, and a heat source for drying. A steam pressure gauge 8 is provided to display the steam pressure. In addition, a drying drum 10 is rotatably provided in a drying chamber 9 formed in the center of the clothes dryer, and radiators 11, 1 are installed above the drying drum 10.
2 and 13 are divided into three parts, and a bottomed cylindrical filter 14 and an exhaust blower 15 are provided at the bottom. The three-divided radiator 11, 12, 1
3, one radiator 11 is the first steam valve 1
6 to the steam supply pipe 17, and the other two radiators 12 and 13 are connected to the steam supply pipe 17 through a common second steam valve 18. From humidification pipe 19
The humidifying pipe is branched and its tip opens into the drying chamber 9, and a live steam valve 20 and a manual opening adjustment valve 21 are inserted in the middle of this humidifying pipe. The drying drum 10 is rotated by a motor 24 via pulleys 22 and 23, and the exhaust blower 15 is rotated by another motor 25. As the exhaust blower rotates, air is sucked in through the intake holes 26, heated by the radiators 11, 12, and 13, and further enters the drying drum 10 to remove moisture from the clothes before being discharged from the exhaust port 27. . The radiators 11, 12, 13 and the drying drum 1
Inlet temperature detector 28 consisting of a thermistor between 0 and 0
However, on the outlet side of the drying drum 10, an outlet temperature detector 29, also made of a thermistor, is provided. 30 is a printed circuit board that constitutes a control circuit;
A block diagram of this circuit is shown in FIG.

The control circuit is mainly composed of a microcomputer, and includes 31 central processing units (in the case of this example).
Built-in RAM. An address bus (12 bits) for specifying the address of the program and a data bus (8 bits) for transferring instructions to the CPU 31 are used to connect the ROM 32 (hereinafter abbreviated as CPU) and the ROM 32 that stores the program. connected. CPU31
The input/output expansion ICs 33 and 34 are connected to the input/output expansion ICs 33 and 34, so that it can handle a large number of inputs/outputs. The input of the CPU 31 is a D/A that outputs the inlet temperature, outlet temperature, and set values of the dryness adjustment knob 4.
3 bits from the converter 35, a keyboard switch for operating course, time/temperature setting, start/stop operation, and 4 bits from the course/preset switch 36 for selecting and setting the operating course when the power is turned on. and 3 bits from the 50Hz/60Hz specification changeover switch, door switch, and thermal switch 37, and when the power is turned on.
Reset circuit 3 for resetting CPU 31
6 and one bit from an external interrupt circuit 39 which generates a rectangular wave voltage at the power supply frequency and inputs it to the external interrupt terminal of the CPU 31. Also
Outputs from the CPU 31 include outputs to the fluorescent display tube 6 for displaying time, etc., outputs to the fluorescent display tube 7 for displaying temperature, etc., and set values for temperature measurement and dryness adjustment knobs. There are outputs to the D/A converter 35 for reading, outputs to drive the steam valves 16 and 18, live steam valve 20, fan motor 25, drum motor 24, and a buzzer 40.

Figure 4 is a flowchart showing the outline of the operation, and when the main switch 3 is turned on, the most frequently used operation course is from the ROM 32 to the CPU 31.
At the same time as being read into the RAM, the hot air temperature for that driving course is displayed on the display device 7. Next, it is checked whether or not any key in the keyboard 5 is being operated, and if a key is being operated and a key signal is being input to the input/output expansion IC 34 of the microcomputer, whether or not it is a stop signal is checked. If it is not a stop signal, it is checked whether it is a start signal or not, and if it is a start signal, an operation flag is set and drying operation is started. During operation, the input states of various switches are checked, including checking the open/closed states of the door switches and checking the states of the inlet temperature detector 28 and outlet temperature detector 29.

If a stop signal is received during operation, operation will be temporarily stopped. In this case, the data necessary for operation, such as the driving course read into the RAM and the test temperatures of the inlet temperature detector 28 and the outlet temperature detector 29, are held in the RAM. Also, at the same time as the operation is temporarily stopped, the in-operation flag is turned off and a temporary stop is set instead. When the start signal is input while the vehicle is stopped, the operation flag is not set, so the remaining operation is started, and at the same time, the temporary stop flag is turned off and the operation flag is set. Even if a signal from the operation data change key is input during a temporary stop, no key processing is performed within the computer, and the operation data within the computer is maintained as is. Here, the operation data change keys include an operation course setting key, a setting key for the inlet temperature or the outlet temperature to the drying chamber, a time setting key, and the like.

If the stop signal is input again during a pause, in this case, the running flag is not set but the pause flag is set, so the operation data is cleared and returned to the state immediately after the power was turned on, and the pause flag is set. Erase. When the operation data change key is pressed in this state, the data read into the RAM is changed according to the pressed key, and then operation is started with a new program by operating the start key. If the start key is pressed without operating the driving data change key, driving will be restarted from the beginning according to the original driving course.

Furthermore, since the flag is set during operation, even if a signal from the operation data change key is input in this state, key processing is not performed and therefore the operation data is not changed.

Here, according to the flowchart in Figure 5,
The operation of the dryer of this embodiment will be sequentially explained. First, when the power is turned on, the reset circuit 38 operates,
The CPU 31 starts execution from the instruction stored at the start address in the ROM 32, resets all outputs, clears the RAM area, inputs the open/close state of the 50Hz/60Hz specification changeover switch 37, and executes the 50Hz
Decide whether to use the specifications or the 60Hz specifications.

Then, the open/close state of the course preset switch 36 is input, and the time and temperature of the driving course specified by the course preset switch 36 are set. This means that in actual use of commercial steam dryers, they often continue to use a specific operating course for exclusive use.For example, if a dryer is used exclusively for clothes washed in an oil-dry washing machine, time-controlled Often only the course program is used. Therefore, by specifying the time control course program in advance with the course preset switch 36, the time control course program is set when the power is turned on, and the time control course program can be set by simply pressing the start key on the keyboard 5. This is because it has the advantage of being able to start driving and being very easy to operate.

Here, the setting of the driving course will be briefly explained. When the power is turned on, the operation course and program number are set by the above-mentioned course/preset switch 36, so the inlet set temperature, outlet set temperature, and
The data of hot air setting time and cold air setting time is CPU3
It is written to a predetermined area secured in RAM within 1. In addition, an area is secured in the RAM to store data on hot air operating time and cold air operating time, and the remaining operating time or total operating time is stored. The driving course can also be set using the keyboard 5, and when the driving course and program number are set using the keyboard 5, the data in the ROM 32 is written to the RAM in the same way as when the power is turned on.
In addition, the settings other than the hot air setting time and setting temperature of the automatic detection course can be changed using the keyboard 5.
You can partially change the drying program prepared in advance. Operation is performed based on data in RAM.

When the initial setting at the time of power-on is completed, the operation routine starts from the flowchart shown in FIG. 5A. First, the time is counted in units of one second based on the input from the external interrupt circuit 39, and is used as a reference for output control during operation and for counting operation time. Next, the D/A converter 35 reads the inlet and outlet temperatures and the setting values of the drying control knob 4, and the fluorescent display tubes 6 and 7 display the time and temperature, and then the keyboard switch is pressed. 5 is checked, and if there is an input, a process corresponding to the input is performed, for example, when an automatic detection course is pressed, an automatic detection course is set. After completing the course settings, press the start key (keyboard
When the switch 5 (included in the switch 5) is pressed, the state of the door switch 37 is input, and if the door is closed, the operating state is entered.

The processing of the keyboard switch 5 is shown in FIG.
The process is carried out according to the flowchart shown in FIG. First, it identifies which key was pressed and performs the processing corresponding to each key. The auto-detection key will not be accepted while the vehicle is running, when an abnormality has occurred, or even if the vehicle is stopped mid-way or while driving on the auto-detection course. This is the same for other course keys (however, the live steam input key is accepted even during operation), and this is to prevent you from easily changing from the automatic detection course to another course. This is essential for normal driving, as it prevents the driving data for the automatically detected course from being cleared due to accidentally pressing another course key. However, it is possible to change from the automatically detected course before starting operation. In addition, when the user wishes to change from the automatic detection course to another course, by pressing the stop key again from the mid-stop state, the CPU 31 is returned to the state before starting operation, and the change is possible. Become. By carrying out the above-mentioned processing, it is possible to prevent erroneous operation of the keyboard switch 5 during a stop in the middle of an automatic detection course in which it is important to maintain driving data.
Moreover, even when the course is to be changed intentionally, it can be easily changed by pressing the stop key twice, so there is no need to provide a special key for changing the course, which is very effective.

As described above, the present invention accepts signals from the operation data change key only when the program is in the initial state, so even if the keyboard is touched by mistake during operation or pause, the operation course and set temperature can be changed. It is possible to provide a highly reliable automatic operation control device without changing the operating data such as There is no inconvenience because the data can be changed, and since the operation course is changed after the operation is temporarily stopped by pressing the stop key, there is no need to apply unreasonable force to the restart operation.
Furthermore, since the same stop key is pressed twice, operation is easy.

[Brief explanation of the drawing]

Fig. 1 is a front view of the clothes dryer of the present invention, Fig. 2 is a longitudinal sectional side view thereof, Fig. 3 is a block diagram of the information transmission section, Fig. 4 is a flowchart of general operation, and Figs. This is a flowchart when applied to a clothes dryer. 5...Keyboard, 31...
CPU, 32...ROM.

Claims (1)

[Claims] 1 ROM that stores programs such as means for automatically operating equipment, setting conditions for judgment, rules for processing various information, etc.
(read only memory) 32 and RAM (random access,
a keyboard 5 consisting of a stop key for temporarily stopping the program, a change key for changing the operating data of the program, etc., and a keyboard 5 for fetching and executing instructions, and for taking out and executing instructions. , a CPU 31 (central
processing unit), and the CPU 31 includes:
While the program is being executed, the program is held in a paused state in response to an input signal from the stop key, and reception of input from the operation data change key is prohibited; An automatic driving control device characterized in that, in response to an input signal, the contents of the RAM are returned to the state at power-on, and are configured to accept input from the driving data change key.