JPH0617806B2 - Numerical display device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical display device, and in particular, a single display unit has a plurality of measured values, set values, and other numerical values. The present invention relates to a numerical display device that is displayed by automatic switching.

(Prior art) In a device that displays measured values, numerical values such as the upper limit value, lower limit value, and temperature of the controlled range, the entire device is made as small as possible, and only one display is provided to make it easier to see. It is often the case that multiple numbers are displayed in a time division.

In such a case, in the conventional device, a push button switch having the number of numerical values to be displayed is provided, and a numerical value of a desired type is displayed by pressing the corresponding push button, or one push button switch is provided. Each time a push button is pressed, a different type of numerical value is switched one by one, or it is activated by pressing one push button and the different types of numerical values are automatically switched and displayed, and after the display has cycled, it remains constant. There are some things that disappear automatically in time.

Further, as a dedicated device for reading the numerical value through the transparent portion of the container when the device is used by being sealed in a waterproof or drip-proof container, there is a device that always automatically switches and repeatedly displays.

(Problems to be Solved by the Invention) Recently, there is a great demand for arbitrarily installing the above-described numerical display device in either an open state or a closed state.

For example, when collecting data for water quality inspection, even if the distance from a measuring tool used in water such as a sensor or other environmental conditions where the numerical display device is installed changes, the open state, This is desirable because it can be used in either a closed state.

In addition, even when it is always used in the open state, there are times when it is desired to switch manually by one time and arbitrarily select the display time of one numerical value, and at other times, it is possible to automatically switch and repeat display regardless of the manual operation. is there.

However, in the above-described conventional numerical display device of this type, a device for manually switching the display or a device for manually starting even with automatic switching cannot be used as it is in a sealed state.

Also, in the case of automatically repeating display, it can be stored in a closed container, but due to the convenience of the user,
There is a disadvantage that each value is displayed for a desired time by manually switching in an open place, and it is not possible to use it arbitrarily such as reading slowly.

An object of the present invention is to solve such a drawback, and in some cases, it is possible to manually switch the respective numerical values to display them for an arbitrary time, and in some cases to automatically switch the numerical values to be repeatedly displayed. To provide a device.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the numerical display device according to the present invention displays a plurality of numerical values including at least measured values. In a device that sequentially switches and displays, a display switching selection switch (2) for setting a manual switching display mode and an automatic switching display mode, and a display that is displayed at each time point during operation of the manual switching display mode and the automatic switching display mode. Means (11, 12, 13, 14) for displaying the type of numerical value, means (10) for indicating that the automatic switching display mode is in operation during the automatic switching display mode operation, and the display switching in the manual switching display mode Each time the selection switch (2) is operated, a manual display operation for sequentially switching the display of the plurality of numerical values is performed. By operating the display switching selection switch (2) after one cycle of switching, the manual switching display mode is changed to the automatic switching display mode, and the plurality of numerical values are automatically switched at predetermined time intervals and repeated. By performing the automatic switching display operation to be displayed and then further operating the display switching selection switch (2), control is performed to shift from the automatic switching display mode to the manual switching mode and perform the manual switching display operation again. And a control means for controlling.

(Example) Next, the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a front view showing an embodiment of the present invention.

As shown in FIG. 1, on the front surface of the casing of the present embodiment, there are a display unit 1 for displaying numerical values, a type of numerical value displayed on the display unit 1, and two modes of manual switching and automatic switching. There are provided a selection switch 2 for switching, a power switch 3, a type of numerical value displayed on the display unit 1, and a lamp display unit 6 indicating that the automatic switching display operation is being performed in the automatic mode.

FIG. 2 is a partially enlarged view showing the type of numerical value displayed on the display unit 1 of the embodiment of FIG. 1 and the lamp display unit 6 showing that the automatic switching display operation is being performed in an enlarged manner.

As shown in FIG. 1, in the embodiment of the present invention, a plurality of numerical values are displayed on one display unit 1.

The type of the numerical value displayed on the display unit 1 is indicated by the lighting of the lamps 11, 12, 13, and 14 of the lamp display unit 6. When the display of the numerical value is switched in the automatic mode, it can be known by turning on the lamp 10.

In addition, a frame surrounded by a dotted line in FIG. 1, A, B, C, D,
In each of the characters 20, characters indicating the meaning that the upper left lamp in the drawing lights up are written. For example, when the apparatus of the present embodiment measures the conductivity of water in order to check the purity of water, the displayed numerical values are the conductivity of water, the upper limit value and the lower limit value of the range in which the conductivity is controlled. , And water temperature.

Therefore, as shown in FIG.
In the drawing, "upper limit", "lower limit" in frame C, and "water temperature" in frame D are described.

Further, "automatic" is written in the lower right frame 20 of the lamp 10.

The selection switch 2 can be operated to select a numerical value to be displayed on the display unit 1 and also to select a display switching mode.

In addition, in the case of the embodiment of FIG. 1, the upper limit value and the lower limit value are displayed while the upper limit and the lower limit of the controlled numerical value are displayed in relation to the control of the main device of the system in which this embodiment is used. A rising button 4 and a descending button 5 for raising or lowering the upper limit value or the lower limit value are provided so that the setting can be made while watching the displayed numerical value.

Further, the lamp 15 is a lamp for notifying this state when the conductivity of water controlled by the main device exceeds the upper limit value,
The lamp 16 is a lamp that informs that there is something wrong with the system.

Next, the operation of the control unit (not shown) incorporated in the embodiment shown in FIG. 1 will be described.

FIG. 3 is a flow chart showing the operation of the control unit.

The computer of the control unit incorporated in the embodiment of FIG.
According to the flowchart of FIG. 3, the operation from the start to the end is repeated at regular intervals.

The type of displayed numerical value is 4 in the embodiment shown in FIG.
As the display mode controlled by the control unit, Am mode is used when manually displaying the conductivity, Bm mode is used when the upper limit value is manually displayed, and Cm mode is used when the upper limit value is manually displayed. The water temperature is displayed in the Dm mode, the electrical conductivity is automatically displayed in the Aa mode, the upper limit value is automatically displayed in the Ba mode, the lower limit value is automatically displayed in the Ca mode, and the water temperature is automatically set. D to display
Set to a mode.

In FIG. 3, first, in step 101, it is determined whether or not the selection switch of FIG. 1 is pressed. If not, the process proceeds to step 111 of FIG. 3 (part 2), and the display switching mode is the automatic mode. To determine if.

If the selection switch is pressed in step 101, the process proceeds to step 102 and it is determined whether the display mode is Am.

If the display mode is Am, the process proceeds to step 103 and the display mode is changed to Bm.

Then, the process proceeds to step 111.

If the display mode is not Am in step 102, the process proceeds to step 104 and it is determined whether the display mode is Bm.

If the display mode is Bm, the process proceeds to step 105 and the display mode is changed to Cm.

Then, the process proceeds to step 111.

When the display mode is not Bm in step 104, the process proceeds to step 106 and it is determined whether the display mode is Cm.

If the display mode is Cm, the process proceeds to step 107 and the display mode is changed to Dm.

Then, the process proceeds to step 111. Step 10
If the display mode is not Cm in step 6, step 1
Then, it is judged whether the display mode is Dm or not.

If the display mode is Dm, the process proceeds to step 109 and the switching mode is switched from the manual mode to the automatic mode. Then, the process proceeds to step 111.

When the display mode is not Dm in step 108, the process proceeds to step 110 and the display mode is changed to Am. Then, the process proceeds to step 111.

The display mode is changed to Am in step 110 because the display mode is Am, Bm, Cm, or Dm.
This is because the selection switch 2 is pressed in the other state, that is, in the automatic mode, so that the display switching mode is switched from the automatic mode to the manual mode, and the first display mode of the manual mode is set to Am.

In step 111, it is judged whether the display switching mode is the automatic mode or the manual mode. If it is not the automatic mode, the process proceeds to step 112, and the automatic lamp 1 in FIG.
0 is turned off, and the process proceeds to step 123.

If the automatic mode is set in step 111, the process proceeds to step 113, the automatic lamp is turned on, and the process proceeds to step 114.

In step 114, the number "1" is subtracted from the coefficient value t each time starting from the set value t ₀ and reaching step 114, and it is determined whether or not the result is zero. If it is not zero, the process proceeds to step 123, and if t is zero, the process proceeds to step 115 and the initial set value is set to t ₀ . Then, the process proceeds to step 116 to determine whether the display mode is Aa.

If the display mode is Aa, the process proceeds to step 117 and the display code is changed to Ba.

Then, the process proceeds to step 123.

When the display mode is not Aa in step 116, the process proceeds to step 118 and it is determined whether the display mode is Ba.

If the display mode is Ba, the process proceeds to step 119 and the display mode is changed to Ca.

Then, the process proceeds to step 123.

When the display mode is not Ba in step 118, the process proceeds to step 120 and it is determined whether the display mode is Ca.

If the display mode is Ca, the process proceeds to step 121 and the display mode is changed to Da. Then, the process proceeds to step 123.

When the display mode is not Ca in step 120, the process proceeds to step 122, the display mode is changed to Aa, and then the process proceeds to step 123.

The reason why the display mode is changed to Aa in step 122 is that the display change mode is the automatic mode but the display mode is not Aa, Ba, or Ca because the current mode is Da. This is for returning to Aa and then repeatedly displaying.

Further, the counting in step 114 is for setting an appropriate time interval between the transitions from one display mode to the next display mode in the automatic mode, and depending on the value of the initial set value t _{0 to be included} in the count value t, This time interval is determined.

Next, at step 123, it is judged if the display mode is Am or Aa.

If the display mode is either Am or Aa, the process proceeds to step 124, the numerical value corresponding to the contents shown in the frame A of FIG. 1 is output and displayed on the display unit 1, and the lamp of A (first The lamp 11) in the figure is turned on, and the lamps B, C and D (lamps 12, 13, 14 in FIG. 1) are turned off.

When the display mode is neither Am nor Aa in step 123, the process proceeds to step 125, and it is determined whether the display mode is Bm or Ba.

If the display mode is either Bm or Ba, the process proceeds to step 126, the numerical value corresponding to the contents shown in the frame B of FIG. 1 is output to the display unit 1 and displayed, and the B lamp (first The lamp 12) in the figure is turned on, and the lamps A, C, and D (lamps 11, 13, and 14 in FIG. 1) are turned off.

When the display mode is neither Bm nor Ba in step 125, the process proceeds to step 127 and it is determined whether the display mode is Cm or Ca.

If the display mode is either Cm or Ca, the process proceeds to step 128, the numerical value corresponding to the contents shown in the frame C in FIG. 1 is output to the display unit 1 and displayed, and the C lamp (first The lamp 13) in the figure is turned on, and the lamps A, B, and D (lamps 11, 12, and 14 in FIG. 1) are turned off.

When the display mode is neither Cm nor Ca in step 127, the process proceeds to step 129, and the numerical value corresponding to the contents shown in the frame D of FIG. Turn on (lamp 14 in FIG. 1),
Lamps A, B and C (lamps 11, 12, 1 in FIG. 1)
Turn off 3).

Thus, steps 124, 126, 128, 12
When the operation of 9 ends, a series of operations ends.

In these operations, the numerical display and the lamp display do not change due to the operation that produces the same result as the current situation. For example, it does not change even if the lamp being turned on is turned on, and it does not change even if the lamp turned off is turned off.

Also, the number of displayed numerical values is four in the embodiment of FIG. 1, but other numerical values may be used.

(Effects of the Invention) As described in detail above, the present invention has a manual display switching mode and an automatic display switching mode, and by operating one display switching selection switch, one display unit can be manually operated. In the display switching mode, the numerical value to be displayed is switched each time the switch is operated, and the same switch is used to switch from the manual display switching mode to the automatic display switching mode to automatically switch the display. And the manual switching display,
There is an effect that either of the automatic switching displays can be selectively used according to the user's request. Further, the present embodiment has the effect that the device can be provided at a lower cost than the conventional one by using the present embodiment since only one display changeover selection switch is required.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a numerical display device according to the present invention. FIG. 2 is a partially enlarged view showing the lamp display portion of the embodiment of FIG. 1 in an enlarged manner. FIG. 3 is a flow chart showing the operation of the control unit (not shown) of the embodiment shown in FIG. 1 ... Display unit 2 ... Display changeover selection switch 3 ... Power switch 4 ... Up button 5 ... Down button 6 ... Lamp display unit 10, 11, 12, 13, 14, 15, 16 ... Lamp 20 , A, B, C, D ... Frame

Claims (1)

[Claims] 1. A display switching selection for setting a manual switching display mode and an automatic switching display mode in a device for sequentially switching and displaying the numerical values displayed on one display unit for displaying a plurality of numerical values including at least measured values. A switch, means for displaying the type of the numerical value displayed at each time point during the operation in the manual switching display mode and the automatic switching display mode, and indicating that the automatic switching display operation is in progress during the automatic switching display mode operation Means, in the manual switching display mode, every time the display switching selection switch is operated, a manual display operation of sequentially switching the display of the plurality of numerical values is performed, and by operating the display switching selection switch after the switching cycle, From the manual switching display mode to the automatic switching display mode The automatic switching display operation is performed in which the plurality of numerical values are automatically switched at predetermined time intervals and repeatedly displayed, and then the display switching selection switch is further operated to change from the automatic switching display mode. A numerical display device comprising: a control unit that shifts to the manual switching code and controls to perform the manual switching display operation again.