JPH0744223A - Test mode setting method for microwave oven - Google Patents

Abstract

PURPOSE:To set a lot of test modes with the small number of keys by setting the test mode while combining the key-on time and key-off time of any prescribed key among plural operation keys on a control panel. CONSTITUTION:One of keys such as a start key or an oven key at the key input part of the control panel is set as a test mode setting key. When key-on information is inputted from a key switch circuit 15, a control part 10 judges whether a turned-on key is the test mode setting key or not and when it is the test mode setting key, a key-on timer is started. Then, this test mode setting key is continuously turned on longer than two seconds and turned on again within two seconds so that the mierowave over can be set in the test mode. Further, test contents can be successively switched by operating the setting key as well. Thus, many kinds of tests can be executed even by a machine type provided with a small number of operation keys, and the operation is simplified as well.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven test mode setting method for setting a microwave oven in a test mode in order to check a product in a production process.

[0002]

2. Description of the Related Art Conventionally, cooking operation keys, such as a start key and an oven key, installed on an operation panel of a microwave oven for performing tests such as checking functions of parts and devices in a microwave oven production line. Various keys, such as a range key, are set to the test mode by a combination that is not operated in a normal usage mode, and various tests are performed.

[0003]

However, in the above-mentioned conventional method, the test mode cannot be set and selected without complicated pressing using various kinds of keys. There are disadvantages that many types of keys are required, the operation procedure is complicated, and the program for controlling the processing is complicated. Further, in a model having only a small number of operation keys, there is a disadvantage that the number of test contents that can be executed is limited.

Therefore, an object of the present invention is to provide a test mode setting method for a microwave oven, in which many test modes can be set with a small number of keys and the operation is simple.

[0005]

According to a method of setting a test mode of a microwave oven according to the present invention, in a microwave oven in which a plurality of operation keys for cooking are installed on an operation panel, a predetermined key among the operation keys is set in a test mode. The setting key is used, and the microwave oven is set to the test mode by the combination of the key-on time and the key-off time of the setting key.

[0006]

In the present invention, a predetermined operation key among the operation keys for cooking installed on the operation panel of the microwave oven is used as the test mode setting key, and this setting key is continuously turned on for a predetermined time or more, Then, the microwave oven is set to the test mode by turning it off for a certain time or more and then turning it on again, that is, by combining the key-on time and the key-off time. After setting the microwave to the test mode, the test contents are selected by sequentially turning on the setting keys, and when the desired test contents are selected, the test contents are executed by operating the key to start the test. To do.

The setting key may be different from the first key which is turned on for a certain time or longer and the second key which is turned on after being turned off for a certain period or longer. In this case, the setting key is turned on for the second time. The key may be a key that also serves to select the test content.

[0008]

1 is a block diagram showing an example of an operation panel of a microwave oven to which the present invention is applied. This operation panel is provided with a display unit 1 for displaying a heating time, a heating progress, etc., and a key input unit 2 in which various operation keys are installed. The key input unit 2 has a start key 2a for starting heating. , Oven key 2b to set the microwave to oven mode, range key 2 to set the microwave mode
c, a grill key 2d for setting the grill mode, and a cancel key 2e for stopping heating or canceling the setting are provided.

FIG. 2 is a schematic block diagram of a microwave oven to which the present invention is applied, showing the control unit 10 and its peripheral circuits. The control unit 10 is composed of a microcomputer having a central processing unit, a program memory, a working memory, etc., is initialized by a reset signal generated from the reset circuit 12 when the power supply circuit 11 is turned on, and is converted into a synchronization signal from the power supply synchronization signal circuit 13. The operation is started in synchronization and driven by the clock signal from the clock circuit 14.

As an input signal to the control unit 10,
Key information from a key switch circuit 15 that detects a key operated by the key input unit 2, weight information from a weight sensor circuit 16 that measures the weight of a heated object housed in a heating chamber,
There is temperature information and the like from the thermistor circuit 17 that measures the temperature in the heating chamber.

The control unit 10 outputs information such as heating time and heating progress to the display circuit 18, outputs information indicating the end of heating time to the buzzer circuit 19, and relay control to the relay drive circuit 20. Output information etc. The display circuit 18 receives the information such as the heating time and controls to display this information on the display unit 1, the buzzer circuit 19 receives the information indicating the end of the heating time and sounds the buzzer, and the relay drive circuit 20 causes the relay drive circuit 20 to relay. Receiving control information, it opens and closes various relay contacts.

Next, the method of setting the test mode according to this embodiment will be described with reference to the flow chart shown in FIG. In this embodiment, one predetermined key of the key input unit 2 is used as a test mode setting key, and the test mode is set by operating this setting key.

First, the control unit 10 detects whether or not key-on information indicating that any one of the keys of the key input unit 2 has been turned on is input from the key switch circuit 15 (step S1), and then turned on. It is determined whether or not the selected key is the test mode setting key, for example, the oven key 2b (step S2). If the turned-on key is the setting key 2b, the key-on timer is started (step S3), and if not, the process ends. In addition, each key is a flip
It is a toggle type using a flop, and it is turned on by the first operation and turned off by the second operation.

Next, when the key-on information is input again from the key switch circuit 15 (step S4), this means that a key other than the setting key 2b is turned on, so the key-on timer is cleared (step S5). The process ends. If the key-on timer counts for 10 seconds or more (step S6), it is determined that the setting key 2b is not turned on for setting the test mode, the key-on timer is cleared (step S5), and the process is executed. finish.

When the key-off signal is input from the key switch circuit 15 within 10 seconds after the setting key is turned on and other keys are not turned on (step S7), the control circuit 10 sets the setting key 2b. Is determined to have been turned off, the contents of the key-on timer are read, and the setting key 2b
It is determined whether or not the key-on time of is 2 seconds or more (step S
8).

If the key-on time is less than 2 seconds, the key-on timer is cleared (step S5), and the process ends.
If it is 2 seconds or more, the key-on timer is cleared (step S9), the key-off timer is started this time (step S10), and the key-on information from the key switch circuit 15 is waited (step S11).

When the key-on information is input from the key switch circuit 15, it is judged whether or not the turned-on key is the setting key 2b (step S12). If it is not the setting key 2b, it is determined that another key is turned on and the key-off timer Is cleared (step S13), and the process ends.

If the key turned on is the setting key 2b,
It is determined whether or not the key-off time from the key-off in step S7 to the key-on in step S11 is within 2 seconds (step S14), and if it exceeds 2 seconds, the key-off timer is cleared (step S13), and the process is executed. finish.
If it is within 2 seconds, the key-off timer is cleared (step S15), and the test mode setting process is performed (step S1).
6).

In this test mode setting process, the display unit 1 displays that the test mode is set, and the microwave oven is set to the first test mode. Next, the input of key-on information from the key switch circuit 15 is awaited (step S17), and when the key-on information is input, the type of the turned-on key is determined.

As a result, if the turned-on key is the cancel key 2e (step S18), the process is terminated, and if it is the start key 2a (step S19), execution of the set test content is started ( If the key is the setting key 2b (step S20) (step S21), the process proceeds to the next test content (step S22). When any other key is turned on (step S21), the execution of the test content is completed (step S20), or when the next test content is entered (step S22), the process returns to step S17.

As described above, in the present embodiment, the predetermined operation keys functioning as the test mode setting keys are consecutively pressed twice.
The microwave oven can be set to the test mode by continuing to turn on for more than one second, and turning on again within 2 seconds after key off. Furthermore, the test contents can be switched in sequence by operating the setting keys.

This operation will be described with reference to the timing chart shown in FIG. First, the oven key 2b, which is a setting key, is turned on at a time point t ₀ , and turned off at a time point t ₁ after 3 seconds. Further, when the setting key 2b is turned on again at the time point t ₂ when one second has passed from the time point t ₁ , the microwave oven is set to the test mode. When the setting key 2b is turned on again after the time t ₃ when the setting of the test mode is completed, the test contents can be switched every time the setting key 2b is turned on. After selecting the desired test content in this way, if the start key 2a is turned on at time t ₄ , the selected test content can be executed.

FIG. 5 is a timing chart showing another embodiment of the test mode setting method according to the present invention. In the above-described embodiment, the test mode can be set and the test contents can be selected by operating one predetermined key, but in the present embodiment, the setting key for turning on the key-on time first and the predetermined key are set. The setting key that is turned on after the key-off time is different, and the test contents can be selected at the same time depending on the type of the setting key that is turned on for the second time.

[0024] For example, first setting key at the time t ₀ (for example, oven key 2b) turned on, turned off at the time t ₁ has elapsed 2.5 seconds, the second time with it from after the 1.5 second time point t ₂ When the setting key (for example, the range key 2c) is turned on, the test content corresponding to the range key 2c is selected at the time t.
_{When the} start key 2a is turned on at ₃ , the test content is executed.

[0025]

According to the present invention, a large number of types of test modes can be set with a small number of keys, so that a large number of types of tests can be executed even with a model having a small number of operation keys, and the setting and selection of test modes can be performed. The procedure is greatly simplified.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an example of an operation panel of a microwave oven to which the present invention is applied.

FIG. 2 is a block diagram of a control system of the microwave oven shown in FIG.

FIG. 3 is a flowchart illustrating an example of a setting procedure according to the present invention.

FIG. 4 is a timing chart of the setting procedure shown in FIG.

FIG. 5 is a timing chart illustrating another embodiment of the present invention.

[Explanation of symbols]

 1 display section 2 key input section 2a start key 2b oven key 2c range key 2d grill key 2e cancel key 10 control section 15 key switch circuit 18 display circuit

Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location H05B 6/68 310 Z 7361-3K

Claims (3)

[Claims] 1. A microwave oven having a plurality of cooking operation keys installed on an operation panel, wherein a predetermined key among the operation keys is a test mode setting key, and a combination of a key-on time and a key-off time of the setting key. A test mode setting method for a microwave oven, characterized in that the microwave oven is set to a test mode according to. 2. The microwave oven test mode setting method according to claim 1, wherein the setting key is a single operation key. 3. The setting key is a key different from a setting key for setting the key-on time and a setting key operated after the key-off time, and the setting key operated after the key-off time also serves to select a test content. The test mode setting method for a microwave oven according to claim 1, wherein: