JP3378184B2 - Display device and control device built in the display device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a control device incorporating the display device.

[0002]

2. Description of the Related Art FIG. 7 is a block diagram showing a schematic configuration of a conventional control device having a built-in display device for controlling a warmer for keeping a temperature in a greenhouse used for cultivation of agricultural products at an appropriate temperature. Is. In the figure, 101 is a control device for controlling each part of the warmer, 102 is a blower for convection of air in the vinyl house to make the temperature uniform, 103 is a combustion device including a burner, and 104 is inside the vinyl house. A temperature sensor for detecting the temperature of the control unit, 105 a main control unit for controlling each part of the control device according to a predetermined procedure, 106 an operation unit for setting the temperature, 107 a current temperature in the vinyl house and preset A liquid crystal display for digitally displaying the temperature, 108 is an indicator light for displaying the ON / OFF state of the power supply, the presence or absence of an alarm, etc., 109 is a blower device 10.
2, a blower control unit 110 for controlling the combustion device 110, a combustion device control unit 110 for controlling the combustion device 103 according to a combustion control sequence, and a reference numeral 111 for comparing the set temperature with the detected temperature. When is low, main controller 10
5 is a heat request check unit that sends a heat request signal to the unit 5.

Next, the operation will be described. First, the temperature inside the vinyl house is set in the operation unit 106, and when the heat request check unit 111 determines that the current temperature is lower than this set temperature, a heat request signal is sent to the main control unit 105. When the main control unit 105 receives the heat request signal, it sends a blower control signal to the blower control unit 109 to blow the blower 1
02 is operated, and a combustion device control signal is sent to the combustion device control unit 110 to start combustion control. The blower control unit 109 controls the number of rotations of the electric motor of the blower 102 to adjust the amount of blown air. Further, the combustion device control unit 110 ignites the burner of the combustion device 103, and starts proportional control, for example. As a result, the temperature inside the vinyl house rises, and when the heat request check unit 111 determines that the current temperature has reached the set temperature, sending of the heat request signal is stopped, and the main control unit 105 outputs. By the control, the combustion device control unit 110 performs the flame extinguishing operation of the burner. The above operation is repeated and the temperature inside the vinyl house is maintained at an appropriate temperature.

[0004]

Since the conventional control device with a built-in display device is configured as described above, when the liquid crystal display 107 fails due to deterioration over time, for example, the set value is changed. Even if an attempt is made, there is a problem that the temperature inside the vinyl house cannot be adjusted to an appropriate temperature because the display of the set value cannot be confirmed. For this reason, it adversely affects the growth of the crops cultivated in the vinyl house, and there is a fear of dying in the severe winter season, which poses a risk of serious damage.

The present invention has been made to solve the above-mentioned problems, and even if the liquid crystal display fails,
An object of the present invention is to obtain a display device that can be surely set and a control device with the built-in display device.

[0006]

A display device according to the present invention corresponds to a liquid crystal display for displaying a set value or a measured value, an indicator lamp for blinking the set value or the measured value, and an arbitrary digital value. Storage means for storing the blinking pattern,
When the liquid crystal display is unusable, a blinking pattern corresponding to the set value or the measured value is read from the storage means, and the read blinking pattern is set or measured.
The number of light pulses corresponding to the value of any one digit of the fixed value
Ideally no light pulse, or the set value or
For each arbitrary digit of the measured value,
A set of states with or without a corresponding number of light pulses
And a blinking control means for supplying a blinking control signal to the indicator lamp based on the blinking pattern to cause the indicator lamp to blink the set value or the measured value.

[0007]

The display device according to the present invention comprises at least as many indicator lights as the number of digits of the set value or measured value, and each of the indicator lights blinks corresponding to the numerical value of each digit of the set value or measured value. The pattern is repeatedly blinked after a certain period of time .

[0009]

In the display device according to the present invention, 1 is set for each blinking pattern corresponding to the numerical value of each digit of the set value or the measured value.
The lighting period or extinguishing period of two light pulses are set to different lengths, and the blinking pattern is repeated after a certain period of time.
The display device according to claim 2 , wherein the display device is shown.

A control device according to the present invention is for setting a setting value for controlling a controlled device, and for digitally displaying the setting value or the measured value input by the setting device. A digital display,
A mode switching means for transmitting a display mode switching signal for switching the display destination of the set value or the measured value, a storage means for storing a blinking pattern corresponding to an arbitrary digital value, and a display sent from the mode switching means. Mode change
Blinking control means for reading the blinking pattern corresponding to the set value or the measured value from the storage means and transmitting a blinking control signal based on the read blinking pattern when the update signal is in the emergency setting mode And a display lamp that blinks and displays the set value or the measured value based on the blink control signal when the blink control signal is sent from the blink control means.

In the control device according to the present invention, when the blinking control signal is not sent from the blinking control means to the indicator light, the normal mode is set, and the state of the control device or the controlled device is continuously turned on or off. It is something to display.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below. Embodiment 1. 1 is a block diagram showing a configuration of a control device having a built-in display device according to Embodiment 1 of the present invention, FIG. 2 is a front view of the control device, and FIG. 3 is a view for explaining an operation of an indicator lamp of the display device. FIG. 4 is a flow chart for explaining the operation relating to the display of set values of the control device. In FIG. 1, 1 is a control device for controlling each part of a warmer for keeping the temperature in the vinyl house at an appropriate temperature, and 2 is a blower device for convection of the air in the vinyl house to make the temperature uniform. (Control device), 3 is a combustion device (controlled device) including a burner, 4 is a temperature sensor for detecting the temperature inside the vinyl house, 11 is a control unit for controlling each part of the control device according to a predetermined procedure, Main control unit that recognizes whether it is the normal mode to display on the liquid crystal display or the emergency setting mode to display this set temperature on the indicator light and controls to display the set temperature on the liquid crystal display or indicator light. (Blinking control means, display device), 12 sets the temperature and the like, and supplies a mode change signal to the main control section 11 when the liquid crystal display fails (setting means, mode switching means), 13 is In addition to digitally display the current temperature and the preset temperature in Niruhausu, a liquid crystal display for displaying the amount or the like indicating the status of the combustion apparatus (digital display, the display device), 14 is an LED for example,
An indicator lamp (display device) that displays the ON / OFF status of the power supply and the presence or absence of an alarm in the normal mode, and blinks the set temperature in a predetermined blink pattern in the emergency setting mode, and 15 is a display corresponding to an arbitrary digital value A storage unit (storage unit) that stores the blinking pattern of the lamp 14, 16 is a blower device control unit that controls the blower device, 17 is a combustion device control unit that controls the combustion device according to a combustion control sequence, and 18 is a set temperature. Is a heat request check unit that sends a heat request signal to the main control unit 11 when the detected temperature is lower. Here, the main control unit 11,
The liquid crystal display 13, the indicator lamp 14, and the storage unit 15 constitute a display device.

In FIG. 2, 121 is a setting switch, 122 is a display switch, 123 is a clear switch, 124 is a decision / return switch, 125 is an up switch, 126 is a down switch, 127 is a reset switch, and 14a is a power supply. The light 14b is a caution light. In the normal mode, the setting switch 121 performs the detailed setting of the apparatus, and the display changeover switch 122 changes the display screen of the liquid crystal display 13 so that the clear switch 12 is activated.
3 is for initializing various set values, the decision / return switch 124 is for calling the initial display screen, the up switch 125 is for raising the set temperature by 0.5 ° C., and the down switch 126 is for setting the set temperature to 0. To lower by 5 ° C,
Used respectively. In addition, the reset switch 127
Is used for re-execution after the ignition operation fails, for example. In addition, the power supply light 14a displays the ON / OFF state of the power supply, and the caution light 14b lights up and displays, for example, when the wiring for the temperature sensor 4 is broken.

In the emergency setting mode, the setting switch 121
Is pressed once to set the temperature to 10 ° C, and the display switch 122 is pressed to set the temperature to 20 ° C.
In addition, when the clear switch 123 is pressed, the set temperature becomes 3
The temperature is set to 0 ° C., and the up switch 125 and the down switch 126 are used to raise or lower the set temperature by 0.5 ° C., respectively, as in the normal mode. Further, in the indicator lamp 14, as shown in FIG. 3, for example, the tens digit of the two-digit digital set temperature is the power lamp 14a, and the ones digit is the caution lamp 14b.
Each generate a number of light pulses corresponding to the numerical value at a predetermined time. Further, by pressing the display changeover switch 122, the clear switch 123, and the reset switch 127 at the same time, for example, for 3 seconds, a mode change signal for shifting to the emergency setting mode is output.
1 is supplied. Further, if the reset switch 127 is pressed in the emergency setting mode, a mode return signal for returning to the normal mode is supplied to the main control unit 11.

Next, the operation will be described. First, for example, when changing the set temperature, the liquid crystal display 13
If is not broken, keep the normal mode and perform the setting operation. The main controller 11 determines that the emergency setting mode is not set in step ST1 (FIG. 4),
2, the set temperature is displayed on the liquid crystal display 13. The operation after this is the same as that of the conventional example, and therefore its explanation is omitted. On the other hand, when trying to change the set temperature, if the liquid crystal display 13 is out of order due to a malfunction, the display changeover switch 122, the clear switch 123, and the reset switch 127 are simultaneously turned on in the operation section 12. Press and hold for more than one second. By this operation, the mode change signal is supplied to the main control unit 11 to shift to the emergency setting mode. After that, the setting switch 121 and the display changeover switch 1
22, clear switch 123, up switch 125,
Alternatively, the down switch 126 is used to change the set temperature. In step ST1, the main controller 11 recognizes that the emergency setting mode has been entered, and proceeds to step ST3.

In step ST3, the main control section 11 selects and reads from the storage section 15 a blinking pattern corresponding to the numerical value of the set temperature set by the operation section 12. Then, the set temperature is displayed by blinking the indicator lamp 14 based on this blinking pattern (step ST
4). For example, when the set temperature is 24 ° C., the tens digit value “2” of the two-digit digital set temperature is changed to the ones digit value “4” by the power supply lamp 14a as shown in FIG. It is indicated by the warning light 14b. That is, the lighting period t1 and the extinguishing period t2 of one light pulse are, for example, 1 second each, and the number of light pulses is set to the numerical value, that is, two light pulses are supplied to the power supply lamp 14a and four light pulses are supplied to the caution light 14b. Generate a pulse. This operation is controlled to be repeated with a rest time t3 of 5 seconds, for example. Know the set temperature by checking the number of these light pulses.

After that, the process returns to step ST1, and as long as the liquid crystal display 13 is out of order, the setting operation is performed at step ST1.
3. The operation of step ST4 is repeated. When the operation for changing the set temperature is completed and it is not necessary to display the set temperature, or when the liquid crystal display 13 is repaired and becomes usable, the reset switch 127 is pressed to set the mode. The return signal is supplied to the main control unit 11.
As a result, the main control section 11 recognizes that it has returned to the normal mode in step ST1, proceeds to step ST2, and causes the liquid crystal display 13 to digitally display the set temperature.

As described above, according to the first embodiment, the set temperature is displayed by blinking the indicator lamp in the blinking pattern corresponding to the digital value of the set temperature, so that the liquid crystal display device is displayed. Even if 13 breaks down, the effect that the setting operation can be performed reliably can be obtained. Further, when the display destination of the set value is changed, the existing component is used as it is, so that it is possible to suppress an increase in cost.

Embodiment 2. FIG. 5 is an explanatory diagram for explaining the operation of the indicator lamp of the display device according to the second embodiment of the present invention. The difference between the second embodiment of the present invention and the first embodiment is that the power supply lamp 14a and the caution lamp 14b are blinked at the same time in the first embodiment, whereas one of them is lit. On the other hand, the other is the point that the other one is turned off. Other than this, the configuration is substantially the same as that of the first embodiment, and thus the description thereof is omitted.

Next, the operation will be described. As shown in FIG. 5, for example, when the set temperature is 34 ° C., the tens digit value “3” of the two-digit digital set temperature is set to the power lamp 14.
The value "4" of ones digit is displayed by the warning light 14b by "a". That is, the lighting period t1 of one light pulse,
The extinguishing period t2 is set to, for example, 1 second, and the number of light pulses corresponding to the numerical value is generated. That is, the power light 1
4a generates three light pulses, and the warning light 14b generates four light pulses. Here, first, four light pulses are generated in the caution light 14b, and then three light pulses are generated in the power supply light 14a, and a period in which three light pulses are generated in the power supply light 14a The warning light 14b should be turned off. The set temperature is known by repeating the above operation and alternately confirming the number of light pulses of both indicator lamps.

As described above, according to the second embodiment, the same effect as that described in the first embodiment can be obtained. In addition, the effect of facilitating visual recognition is obtained.

Embodiment 3. FIG. 6 is an explanatory diagram for explaining the operation of the indicator lamp of the display device according to the third embodiment of the present invention. The third embodiment of the present invention is substantially different from the first embodiment described above, whereas in the first embodiment, the power supply light 14a and the caution light 14b are displayed in blinking, whereas in the third embodiment, for example, The point is that only the power supply light 14a is made to blink. Other than this, the configuration is substantially the same as that of the first embodiment, and thus the description thereof is omitted.

Next, the operation will be described. As shown in FIG. 6, for example, when the set temperature is 34 ° C., the power lamp 14a first displays the tens digit “3” of the two-digit digital set temperature, and the rest period t4 is stopped. Next, display the ones digit "4". That is, after generating three light pulses, four light pulses are generated after the rest period t4. Here, the lighting period t11 of one light pulse in the three light pulses in the first half is the lighting period t1 of one light pulse in the four light pulses in the latter half.
It is set to be larger than 2. After that, during the rest time t5 (provided that t4 <t5), the above operation is controlled to be repeated. Here, the power supply light 14a
The set temperature is known by sequentially checking the number of times the optical pulse is generated. Note that while the power supply light 14a blinks the set temperature, the caution light 14b displays the presence or absence of an alarm.

As described above, according to the third embodiment, the same effect as described in the first embodiment can be obtained. In addition, since the set temperature is displayed in a blinking manner with one indicator light, it is possible to more effectively suppress an increase in cost.

In each of the above embodiments, the set temperature to be displayed has two digits, but values below the decimal point may be displayed. Also, for example, one light pulse is set to correspond to the set temperature of 1 ° C.
Individuals may be associated. Further, when the set temperature may be in the range of 25 ° C. or higher and 34 ° C. or lower, the display of the tens digit may be omitted. Further, although the case where the set temperature is displayed by blinking has been described, the measured value may be displayed in the same manner. Further, the set value or the measured value is not limited to the temperature, but can be applied even in the case of selecting humidity or the like.

[0027]

As is evident from the foregoing description, according to the present invention, by blinking the indicator lamp blinking pattern corresponding to the digital value of the set value or the measured value, displays a set value or the measured value, the set value or Digit of any digit of measurement
Since it is configured to generate a number of light pulses corresponding to the set value in the indicator lamp, the effect of being able to clearly recognize the set value or measured value by the blinking display of the indicator lamp without using a digital display is there. Therefore, there is an effect that the setting operation can be surely performed without using the digital display.

[0028]

According to the present invention, at least the number of indicator lamps corresponding to the number of digits of the set value or the measured value is repeated with a blinking pattern corresponding to the digital value of each digit after a predetermined time has elapsed.
Since it is configured to so that blinking display returns Ri, there is an effect that can recognize more clearly set value or measured value by flashing indicator light.

[0030]

According to the present invention, the lighting period or extinguishing period of one light pulse is set to a different length for each blinking pattern corresponding to the numerical value of each digit of the set value or the measured value, and a fixed time is set. Since the blinking pattern is repeatedly displayed after the passage of time , it is possible to obtain the effect that the value of each digit can be easily determined.

According to the present invention, the transmission from the mode switching means is performed.
The attached display mode change signal was the emergency setting mode.
In this case, when the display mode switching signal for switching the display destination of the set value or the measured value is sent to the blinking control means,
Since the blinking control means receives this display mode switching signal and is configured to blink the set value or measured value on the indicator lamp in a corresponding blinking pattern, for example, the digital display fails and becomes unusable. Even in this case, there is an effect that the set value or the measured value can be clearly recognized by the blinking display of the indicator light.

According to the present invention, the indicator lamp is a blinking control means.
If no blinking control signal is sent from
Control device by continuous lighting or continuous extinction.
Or configured to display the status of the controlled device ,
When changing the display destination of the set value or measured value,
Depending on that as it is diverting the existing parts, there is an effect that it is possible to suppress the increase of the cost.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a control device with a built-in display device according to a first embodiment of the present invention.

FIG. 2 is a front view of the control device.

FIG. 3 is an explanatory diagram for explaining an operation of an indicator lamp of the display device.

FIG. 4 is a flowchart for explaining an operation of the control device.

FIG. 5 is an explanatory diagram for explaining the operation of the indicator lamp of the display device according to the second embodiment of the present invention.

FIG. 6 is an explanatory diagram for explaining the operation of the indicator lamp of the display device according to the third embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration of a conventional control device with a built-in display device.

[Explanation of symbols]

1 control device 2 Blower (controlled device) 3 Combustion device (controlled device) 11 Main control unit (flashing control means, display device) 12 Operation part (setting means, mode switching means) 13 Liquid crystal display (digital display, display device) 14 Indicator light (display device) 15 storage unit (storage means)

Continuation of front page (51) Int.Cl. ⁷ Identification code FI G09G 3/18 G09G 3/18 3/20 633 3/20 633R 670 670A 680 680D // A01G 9/24 A01G 9/24 M (56) Reference References JP-A-6-2915 (JP, A) JP-A-7-225641 (JP, A) JP-A-52-5223 (JP, A) JP-A-7-293893 (JP, A) JP-A-3- 63449 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G09G 3/00 G09G 3/04 G09G 3/18 G09G 3/20 633 G09G 3/20 670 G09G 3/20 680 A01G 9/24

Claims (5)

(57) [Claims] 1. A liquid crystal display for displaying a set value or a measured value.
Device , an indicator lamp for blinking the set value or the measured value, a storage means for storing a blinking pattern corresponding to an arbitrary digital value, and the set value or the measured value when the liquid crystal display is unusable. A flashing pattern corresponding to the read out flashing pattern is read from the storage means
Or the number corresponding to any one digit of the measured value
Light pulse or no light pulse, or the above setting
Numerical value of each digit in arbitrary multiple digits of value or measured value
The number of optical pulses corresponding to
And a blinking control unit that supplies a blinking control signal to the indicator lamp based on the blinking pattern to cause the indicator lamp to blink the set value or the measured value. 2. At least a number of indicator lights corresponding to the number of digits of the set value or the measured value are provided, and each of the indicator lights has a blinking pattern corresponding to the numerical value of each digit of the set value or the measured value after a predetermined time has passed. The display device according to claim 1 , wherein the display is repeatedly blinked. 3. The lighting period or extinguishing period of one light pulse is set to a different length for each blinking pattern corresponding to the numerical value of each digit of the set value or the measured value, and a fixed time elapses.
A contract characterized by repeatedly displaying a back-flashing pattern
The display device according to claim 2 . 4. A setting means for inputting a set value for controlling a controlled device, a digital display for digitally displaying the set value or the measured value input by the setting means, A mode switching means for sending a display mode switching signal for switching the display destination of the set value or the measured value, a storage means for storing a blinking pattern corresponding to an arbitrary digital value, and a display mode sent from the mode switching means. Change signal
If the is an emergency setting mode, the blinking pattern according to the set value or the measured value is read from the storage means, and blinking control means for sending a blinking control signal based on the read blinking pattern, A control device with a built-in display device, comprising: a display lamp that blinks and displays the set value or the measured value based on the blink control signal when the blink control signal is sent from the blink control means. 5. The indicator lamp is in a normal mode when the blinking control signal is not sent from the blinking control means, and the state of the control device or the controlled device is displayed by continuous lighting or continuous extinction. The control device with a built-in display device according to claim 4 .