JPH0962345A - Numerical value setting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a numerical value setting device which can set and change the numerical value in a comparatively short time just with rotations of a rotary knob. SOLUTION: A controller 13 monitors the output pulses of a rotary knob 12 to detect the rotational direction and amt. of the knob 12. A speed detector 15 detects the rotational speed of the knob 12. The controller 13 controls the numerical value of the lowest order digit of a numerical display device 10 according to the rotational direction and amt. of the knob 12 when its rotational speed is lower than 1/2 cycle per pec. Then the controller 13 controls the numerical value of the 2nd digit of the display device 10 when the rotational speed of the knob 12 is higher than 1/2 cucle per pec. Furthermore, the controller 13 controls the numerical value of the 3rd digit when the rotational speed of the knob 12 exceeds 1 cycle per pec. Thus the rotational amt. of the knob 12 is increased to control the rotational speed by 1 as the digits have higher orders. If the numerical value of digits get out of a range (0 to 9) when these digit values are controlled, the numerical value of higher order digits are changed by a carry-up or carry-down operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical value setting device for setting / changing a numerical value in a measuring device or the like, and particularly to a numerical value setting device capable of easily changing a numerical value of a plurality of digits simply by rotating a rotary knob for operation. Regarding vessels.

[0002]

2. Description of the Related Art FIG. 2 shows a configuration example (conventional example 1) of a conventional numerical setting device. The numerical display 10 displays a 4-digit number by a light emitting diode. The rotary knob 12 includes a rotary encoder that outputs a two-phase pulse signal whose rotation angle and rotation direction are detected, and outputs the two-phase pulse signal to the controller 13. The controller 13 contains a microprocessor and has two functions. First, when a pulse signal is output from the rotary knob 12, the numerical display 1
The value displayed at 0 is increased or decreased depending on the rotation direction. Secondly, a binary output signal corresponding to the numerical value displayed on the numerical display 10 is output to the output terminal 14.

FIG. 3 is a block diagram showing an example (conventional example 2) of a numerical setting device capable of further setting a digit as compared with the conventional example 1. In this figure, the same components as those shown in FIG. 2 are designated by the same reference numerals. The numerical display 10 displays a 4-digit number by a light emitting diode. The digit display 11 is arranged below the numerical display 10,
An underline mark is displayed at one position of each number by a light emitting diode. As in the case of FIG. 2, the rotary knob 12 includes a rotary encoder that outputs a two-phase pulse signal whose rotation angle and rotation direction are detected, and outputs the signal to the controller 13. The digit move button 16 includes two push button switches that indicate to move a digit to an upper position or a lower position. The controller 13 contains a microprocessor and has three functions. First, when the pulse signal is output from the rotary knob 12, the numerical value of the higher digit indicated by the digit indicator 11 of the numerical indicator 10 is increased or decreased depending on the rotation direction. Secondly, when the digit move button 16 is pressed, the digit indicated by the digit display 11 is moved to the upper or lower position. Thirdly, a binary output signal corresponding to the numerical value displayed on the numerical display 10 is output to the output terminal 14.

[0004]

The numerical setting device of Conventional Example 1 increases or decreases the least significant digit, and if the numerical value is increased, it is necessary to cause carry to occur many times. I have to rotate the knob a lot,
There is a problem that it takes time to set and change the setting.

The numerical setting device of the conventional example 2 can increase or decrease the numerical value of an arbitrary digit, while the numerical setting device of the conventional example 1 increases or decreases the lowest digit. Therefore, when the numerical value is largely changed, the numerical value of the upper digit can be changed by moving the digit, and the time required for the change can be shortened. However, both the rotary knob and the digit movement button have to be operated, which complicates the operation.

The present invention has been made in view of the above-mentioned problems of the prior art, and only by rotating the rotary knob,
The purpose of the present invention is to provide a numerical setting device that can set and change numerical values in a relatively short time.

[0007]

In order to solve the above problems, the numerical setting device according to the present invention sets a numerical value by increasing or decreasing the numerical value according to the rotating direction and the amount of rotation of the rotary knob. In the container, a numerical display means for displaying a numerical value of at least three digits to be set, a speed detection means for detecting the rotation speed of the rotary knob, and a rotary knob according to the range of the speed detected by the speed detection means. And a control unit for changing the digit to be the target of the numerical value increase / decrease operation of the numerical value display unit.

In this numerical value setting device, the control means sets, for example, the lowest digit in the first rotational speed range of the rotary knob as the numerical value increasing / decreasing operation, and the second digit faster than the first rotational speed range. The second digit in the rotation speed range is the object of numerical value increase / decrease operation, and the third digit in the third rotation speed range faster than the second rotation speed range is the object of numerical value increase / decrease operation.

With such a structure, the digit to be operated can be moved in accordance with the rotation speed of the rotary knob, and as a result, the operation of the digit moving button is not necessary, and the operation of the rotary knob alone is simple and quick. It becomes possible to set / change the numerical value.

Further, it is preferable that the control means makes the amount of rotation of the rotary knob required to increase or decrease the numerical value of the upper digit by 1 larger than the amount of rotation required to increase or decrease the numerical value of the lower digit by one. As a result, it is possible to easily increase or decrease the numerical value after shifting to the upper digit.

Further, the control means may forcibly set the numerical values of all lower digits to 0 in the numerical value increasing / decreasing operation on the digits other than the least significant digit. With this configuration, it is possible to quickly and easily set numerical values with good separation.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, FIG. 1 shows an example of the configuration of a numerical setting device according to the present invention. In this figure, the same components as those shown in FIGS. 2 and 3 are designated by the same reference numerals. The rotary knob 12 includes a rotary encoder that outputs a two-phase pulse signal for detecting a rotation angle and a rotation direction, and outputs a signal to the controller 13 and the rotation speed detector 15, like the conventional one. A rotary encoder is a well-known device that internally has a disc with radial slits, a light emitting diode and a phototransistor, and detects the light of the light emitting diode blocked by the slit by the rotation of the disc with two phototransistors. As a result, as shown in FIG. 4, pulses of A phase and B phase which are 180 degrees out of phase with each other are generated. When a shaft (not shown) for rotating the knob 12 is turned clockwise (CW), B
When the phase pulse has a low output voltage (0), the A phase pulse rises (Fig. 4 (a)). Conversely, when it is rotated counterclockwise (CCW), when the B phase pulse has a high output voltage (1), A The phase pulse rises (Fig. 4 (b)). Therefore, by inspecting the voltage level of the B phase at the rising time of the A phase,
The rotation direction of the rotary knob 12 can be detected.

The rotation speed detector 15 is composed of, for example, a well-known frequency voltage converter, and inputs a pulse signal of A phase or B phase from the rotation knob 12 to control a voltage proportional to the rotation speed of the knob 12. Output to 13.

The controller 13 contains a microprocessor and has the following three functions. First, when the pulse signal is output from the rotary knob 12, the numerical value of the digit indicated by the digit indicator 11 of the numerical indicator 10 is increased or decreased depending on the rotation direction. Second, the rotation speed detector 15
The digit position indicated by the digit display 11 is moved and the digit to be increased or decreased is changed according to the speed signal from. Thirdly, a binary output signal corresponding to the numerical value displayed on the numerical display 10 is output to the output terminal 14. These specific operations will be described later.

In the above description, the rotation speed detector 15
Although the above is configured by the frequency-voltage converter, it may be configured as shown in FIG. In the example shown in FIG.
The rotation speed detector 15 includes an oscillator 20 that generates a clock signal of a predetermined frequency, a counter 21 that counts this clock signal, and a latch 23 that holds the output signal of the counter.
And a control circuit 22 for starting / stopping / holding / resetting this counting. After resetting the counter 21, the control circuit 22 starts counting at the rising edge of the A-phase or B-phase pulse signal (A-phase pulse in this example) input from the rotary knob 12, and counts at the next rising edge. The operation is stopped, the count value is immediately held in the latch 23, and then the counter 21 is reset. This operation is repeated. When the frequency of the clock signal is F [Hz], the value of the counter 21 when stopped is N, and the period of the A-phase pulse signal is Ta, the respective relationships are expressed by the following equations.

Ta = N / F (1) Further, the A phase pulse signal is M for one rotation of the knob 12.
When it occurs once, the rotation speed R (rotation / second) of the knob 12 is expressed by the following equation.

R = 1 / (Ta · M) = F / (N · M) (2) The value N of the counter 21 is calculated by the equation (2).
The rotation speed of the rotary knob 12 can be calculated. In this way, the value of the counter 21 is output as a binary code from the speed detector 15, and the controller 13 calculates the equation (2).
Is calculated.

Next, FIG. 6 shows a flowchart of the processing of the controller 13, and the operation of the numerical setting device of FIG. 1 will be described.
When the speed detector 15 shown in FIG. 5 is adopted, the calculation of the equation (2) is also executed by the controller 13,
The processing is omitted in FIG.

First, it is determined whether the current rotation speed of the rotary knob 12 is 1/2 rotation per second or more (step 61).
If not, the digit display of the digit display 11 is moved to the lowest (step 67) and 1 is substituted for the variable N (step 6).
8). Then, the process proceeds to step 69 described later.

When it is determined in step 61 that the rotation speed is 1/2 rotation or more per second, it is determined whether the rotation speed is 1 rotation per second or more (step 62). If not,
Since the current rotation speed is within the rotation speed range of 1/2 rotation per second or more and less than 1 rotation per second, the digit display is 2 from the lowest.
Move to the th (second) digit (step 65). Then, 5 is substituted for the variable N (step 66), and the process proceeds to step 69.

In step 62, the rotation speed is 1 / s.
If it is within the speed range of rotation or more, the digit display is moved to the third lowest digit (third place) (step 6).
3) Substitute 10 for the variable N. Then, step 69
Move to.

At step 69, the numerical value of the corresponding digit is increased or decreased. At this time, the rotation amount (rotation angle) for increasing / decreasing by 1 is changed depending on which digit the relevant digit is. this is,
This is because the higher the digit is, the higher the rotation speed is, and if the numerical value of the upper digit is increased / decreased with the same rotation amount as that of the lowest digit, the numerical value changes rapidly and the actual numerical value setting operation cannot be performed. The weighting value for that is the value of N. In this example, the corresponding digit is increased or decreased by 1 every N / 50 rotations. Specifically, the lowest digit increases / decreases by 1 for every 1/50 rotation, and the second digit increases / decreases by 1 for every 5/50 rotations (that is, 1/10 rotation). Then, it is configured to increase / decrease by 1 every 10/50 rotations (that is, 1/5 rotations). Whether to increase or decrease depends on the rotation direction of the knob 12. That is, when the rotary knob 12 is rotated clockwise, the numerical value is increased, and when it is rotated counterclockwise, the numerical value is decreased. If the value deviates from the range of 0 to 9 due to the decrease or increase, the value of the upper digit is changed according to the carry up or the carry down.

The numerical values of N given here are merely examples, and the values are not strictly limited to these numerical values.

Further, in the present embodiment, the fourth lowest digit is determined by raising or lowering the third digit. Of course, it is also possible to similarly set a threshold value of the rotation speed (for example, 2 rotations per second) for the fourth digit.

The above steps are repeatedly executed.

A specific operation example of the numerical setting device will be described below. In this example, the rotary knob 12 is assumed to generate one pulse signal for every 1/50 rotation by the built-in rotary encoder.

First, when the rotary knob 12 is stationary,
The digit display 11 indicates the lowest digit of the numerical display 10. By starting to turn the rotary knob 12, the numerical value of the lowest digit of the numerical display 10 indicated by the digit display 11 is increased or decreased for each pulse, that is, for every 1 / 50th rotation.
As described above, when the rotary knob 12 is rotated clockwise, the numerical value increases, and when the numerical value "9" is further increased by 1, the numerical value of the digit higher by 1 digit is increased by 1 and the digit of the lowermost digit is ".
It returns to 0 ". When the rotary knob 12 is rotated counterclockwise, the numerical value decreases. When the numerical value" 0 "is further decreased by 1, the numerical value of the digit higher by 1 digit is decreased by 1 and the lowest digit is It returns to “0.” Such carry and carry are the same in other digits.

When the rotation speed of the rotary knob detected by the rotation speed detector 15 exceeds 1/2 rotation per second, the digit indicated by the digit indicator 11 moves to the second lowest position.
At the same time, the numerical value of the second lowest digit of the numerical display 10 increases or decreases according to the rotation direction. On this occasion,
The value of the digit changes by 1 every 5 pulses or 5/50 revolutions.

When the rotation speed of the rotary knob 12 exceeds one rotation per second, the digit indicated by the digit indicator 11 moves to the third lowest position. At the same time, the numerical value of the third lowest digit of the numerical display 10 increases or decreases according to the rotation direction. At this time, the value of the digit is 10 pulses, that is, 10/50
It changes by 1 for each rotation.

As described above, the position of the digit indicated by the digit display 11 is determined according to the predetermined range of the rotation speed, and the rotation knob 1
When the rotation speed of 2 becomes less than 1/2 rotation per second, it returns to the lowest digit. Of course, the digit display of the digit display 11 and the increase / decrease of the numerical value of the digit are controlled in association with each other.

In the actual numerical value setting operation, numerical values are set in order from the most significant digit to the least significant digit.
That is, after setting the upper digit with fast rotation, the rotation speed is reduced to set the lower digit. This is because there is a possibility that the numerical value of the determined lower digit may change when the rotational speed is increased to shift to the upper digit after the numerical value of the lower digit is fixed.

As described above, according to the numerical setting device of FIG.
Only by rotating the rotary knob 12, it is possible to quickly and easily set / change a multi-digit numerical value.

Next, a second embodiment of the present invention will be described. This embodiment is not illustrated because it can be easily inferred from the numerical setting device of FIG. 1 only for explanation. In the example of FIG. 1, the case where the numerical display 10 has four digits is shown, but the case where there are more digits is also conceivable. In that case, it is possible to divide the multi-digit into a plurality of groups and perform the above-described operation in each group. For example, in the 8-digit numerical setting device, the lowest to fourth digits (fine adjustment)
And the digit from the 5th to the 8th place (coarse adjustment), the operation is divided into two stages. In the coarse adjustment, the 5th digit is the lower limit, and in the fine adjustment, the lowest digit is the lower limit. Similar operations can be performed. At this time, a separate switch may be provided for switching between the fine adjustment and the coarse adjustment, or when the higher rotation speed of the rotary knob 12 is detected, one of the fine adjustment and the coarse adjustment is switched to the other. Good. The latter is preferable from the viewpoint of being operable using only the rotary knob 12.

Further, a third embodiment of the present invention will be described. This is also not particularly shown. In the above embodiment, when the digit to be operated moves to the upper digit, the numerical value of the digit lower than the digit indicated by the digit indicator 11 does not change. However, in the present embodiment, the digit does not change. A control method of forcibly setting the numerical values of the lower digits than the digit indicated by the display 11 to zero is adopted. In general, when setting a numerical value in a measuring instrument or the like, it is often the case that a numerical value with good separation is set / changed. For example, consider an example in which the current set value 1843 MHz is changed to 2000 MHz. In this case, in the method described above, the numerical values "2", "0", "0", "0" of all the digits must be sequentially determined from the upper digit. On the other hand, in the present embodiment, 1) with respect to the display of “1843”, the knob starts rotating in the increasing direction, and 2) with the rotation of the knob, the lowest numerical value increases as follows. 1843 → 1844 → 1845 → 1846 3) When the number of revolutions per second exceeds 1/2, the digit moves to the second place, and at the same time, the value of the lowest digit is set to 0, 1846 → 1850 → 1860 → 1870 4 ) When the number of rotations exceeds one revolution per second, the digit is moved to the third digit, and at the same time, the values of the lowest digit and the second digit are both set to 0. 1870 → 1900 → 2000 5) Stop the rotation of the knob.

This operation corresponds to the above-mentioned third position (and fourth position).
It is nothing but the operation of determining the numerical value of the place of digit. In this way, since the lower numerical value is automatically set to 0 when shifting to the upper digit, the operation for setting the numerical value (0) of the further lower digit becomes unnecessary. Therefore, it is possible to set numerical values with good separation very quickly. This embodiment does not exclude setting of numerical values other than well-separated numerical values, and similarly to the previous embodiment, by setting numerical values from higher order to lower order, any desired numerical value is set. be able to.

The digit display 11 is not limited to the one shown in the figure, but the luminance or color of the numerical value of the corresponding digit of the numerical display 10 is changed, blinked, or inverted (reversed by CRT or the like). (When a display device capable of displaying is used) or the like.

[0037]

According to the numerical setting device of the present invention, the digit shift button is not required, and the numerical value can be set / changed quickly and simply by only operating the rotary knob.

[0038]

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration example of a numerical setting device according to the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional numerical setting device.

FIG. 3 is a block diagram showing the configuration of another conventional numerical setting device.

4 is a waveform diagram for explaining the operation of a rotary knob used in the numerical setting device of FIG.

5 is a block diagram showing a configuration example of a speed detector 15 of FIG.

6 is a flowchart showing a processing example of a controller 13 of FIG.

[Explanation of symbols]

10 ... Numerical display, 11 ... Digit display, 12 ... Rotation knob,
13 ... Controller, 14 ... Output terminal, 15 ... Speed detector.

Claims (4)

[Claims] 1. A numerical value setting device for setting a numerical value by increasing or decreasing the numerical value according to the rotating direction and the amount of rotation of a rotary knob, and a numerical value display means for displaying at least a 3-digit numerical value to be set, and a rotary knob of the rotary knob. Speed detection means for detecting the rotation speed, and according to the range of speeds detected by the speed detection means,
A numerical setting device, comprising: a control means for changing a digit to be subjected to a numerical value increase / decrease operation of the numerical display means by a rotary knob. 2. The numerical setting device according to claim 1, wherein the control means sets the lowest digit in the first rotation speed range of the rotary knob as a target for the numerical value increasing / decreasing operation, and from the first rotation speed range. The second digit in the fast second rotation speed range is the object of numerical value increase / decrease operation, and the third digit is the numerical value increase / decrease operation in the third rotation speed range faster than the second rotation speed range. Numerical setting device characterized in that. 3. The numerical setting device according to claim 1 or 2, wherein said control means increases or decreases the numerical value of the lower digit by 1 for the amount of rotation of the rotary knob required to increase or decrease the numerical value of the upper digit by 1. A numerical setting device characterized in that it is larger than the amount of rotation required for this. 4. The numerical setting device according to claim 1, 2 or 3, wherein said control means forcibly sets the numerical values of all digits lower than the digit in the numerical value increasing / decreasing operation in the digit other than the least significant digit. Numerical setting device characterized by setting to 0.