JP2817280B2 - Angle display of electronic cam switch - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to an automatic beverage filling machine that automatically and continuously injects and fills a beverage such as milk into a bottle, and the like. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an angle display device of an electronic cam switch used for controlling the operation angles of various rotary working devices that are rotationally driven using an encoder.

<Prior art and its problems> In this type of electronic cam switch, it is necessary to accurately recognize and grasp the rotational operation state of a rotationally symmetric rotating work device, a predetermined operation state related to the rotational operation angle, and the like. Due to the characteristics, the current value of the rotation angle and the ON and OFF angles of the output timing to the above devices, and in the case of the multi-channel output type, the channel number used, that is, the output cam number
There is a demand for the installation of a display device having a function of displaying an image.

FIG. 7 is a front view showing an outline of a conventional angle display device of an electronic cam switch in response to the above-mentioned demand. In FIG. 7, reference numeral 50 denotes a display nameplate. Angle display section 51 that displays numbers via LEDs
An output timing angle display unit 52 including an ON angle display unit 52A for numerically displaying the output start angle to the device and an OFF angle display unit 52B for numerically displaying the output stop angle to the device out of the above rotational operation angles. The display section 53 of the output cam number indicating the channel to be changed is arranged on a straight line.

According to the conventional angle display device as described above, the current angle, the output ON and OFF angles, and the output cam No. are displayed at once on each of the display units 51 to 53, so that they can be checked at once. However, it is difficult for the operator to visually and sensibly recognize the display because of the display of numbers.

In particular, the output ON angle and output OFF angle display sections 52A, 52A
Below the B, a suffix such as “ON angle” or “OFF angle” is added to explain the contents of the number displayed there. It is generally written smaller than the number for angle display in order to improve the performance, therefore, when visually recognizing the nameplate 50 from a distance, it is difficult to distinguish the ON angle and the OFF angle and recognize it There was a problem.

<Object of the Invention> The present invention has been made to solve the above-described conventional problems. In the operation mode, not only can the output ON angle and the output OFF angle be displayed at the same time, but also in the setting mode, the output ON angle can be displayed. It is another object of the present invention to provide an electronic cam switch angle display device capable of displaying the output OFF angle in a time-series manner and in a visually distinct state.

<Structure and Effect of the Invention> The electronic cam switch angle display device according to the present invention outputs the display content of the output timing angle display section when the output timing angle is set and the output ON angle display state and output
ON / OFF key for switching to the OFF angle display state, and blinking rising and falling arrow symbols respectively corresponding to the ON angle display section and the OFF angle display section of the output timing angle display section, Determines whether the ON / OFF key input is the display state of the ON angle or the display state of the OFF angle, and based on the determination result, blinks the corresponding side of the blinking rising and falling arrow symbols. And a set key for setting the set ON angle and OFF angle.

According to the present invention, when the output timing angle is set, by pressing the ON / OFF key, the display content of the output timing angle display unit is sequentially switched between the ON angle display state and the OFF angle display state. At the same time, the above ON / O
The display state by the input of the FF key is determined, and the rising arrow symbol corresponding to the ON angle display section or the falling arrow symbol corresponding to the OFF angle display section blinks. After the setting is completed, by pressing the set key, the set output ON angle and output OFF angle are both displayed, and the rising arrow symbol and the falling arrow are not blinking at the corresponding portions of the display section. An arrow symbol is represented.

Therefore, in the setting mode, it is possible to display the output ON angle and the output OFF angle in chronological order, and with the flashing operation of the rising arrow symbol and the falling arrow symbol that match the sense of ON / OFF. Output ON angle and output OF
While clearly and visually confirming the distinction between F angles,
Each setting operation can be easily and accurately executed without being frightened.

In addition, in the operation mode after the setting, together with the display of the set ON angle and the set OFF angle, a symbol mark such as a rising arrow symbol and a falling arrow symbol, instead of a subscript, is displayed in correspondence with each display portion. It is possible to set ON angle and set OF from a distance
Also in the case of reading the F angle, there is an effect that the reading can be performed without error by clearly distinguishing them.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing the appearance of an electronic cam switch according to the present invention, and FIG. 2 is a front view. In each of these figures, reference numeral 1 denotes a cam switch main body, and a plurality of input / output terminals 2 and an encoder are provided on the back thereof. In addition to the connector 3, an LCD display screen 4 is provided on the front surface, and a large number of key switches are arranged on the side and lower side of the LCD display screen 4.

The connector 3 is connected to an absolute type encoder 5 having a resolution of 256. The encoder 5 is attached to a rotating shaft of a rotary working device 6.

The key switch group includes a mode switching switch 7 for switching among three modes, a setting mode PRG, a test operation mode TST, and an operation mode RUN; a teach mode TCH for setting a setting mode according to the actual operation of the rotary work device 6; Setting mode designation switch 8 for manually switching to the angle setting manual mode MAN via the
And a function switch 9 for switching the direction of rotation and switching the rotation speed between high and low, and a 256/360 switch for switching between 0-255 / revolution display and 0-359 ° / revolution display.
10, + and-angle keys 11A and 11B for incrementing and decrementing the angle value in the manual setting mode MAN, and an origin setting key 12 for setting an arbitrary angle position of the rotary work device 6 to the origin, that is, 0. , An erase key 13 for erasing all the settings, a set key 14 for setting the settings, an ON / OFF key 15 for selecting and specifying the ON angle and OFF angle, and a multi-channel, specifically 8-channel cam. Select the operation steps STP1 and STP2 for the number.
It comprises a step key 16 to be specified, a cam No. key 17 for selecting and specifying a cam number, and a confirmation key 18 for calling and confirming the set contents on the LCD display screen 4.

As shown in FIG. 3, a PR screen is displayed on the LCD display screen 4 in accordance with the input operation for each key switch group.
Mode display section 7a that displays one of the setting modes of G, TST, and RUN, setting mode display section 8a that displays one of the setting modes of TCH and MAN, and a display angle display section that displays the display angle of 256/360 10a, angle display section 11a that displays the current angle, STP1
An operation step display section 16a indicating which operation step of STP2 is to be performed, a setting cam number display section 17a displaying a cam number of 1 to 8 selected at the time of setting, and 1 to 8 being in an output state in the operation mode Output cam N to display the cam number of
o. Display section 19a, when the setting of ON angle and OFF angle is completed and the set values are confirmed by pressing the set key 14, and when the setting contents are called by pressing the confirmation key 18, the set ON angle and OFF angle are set. The output timing angle display section 14A is composed of an ON angle display 14a1 and an OFF angle display section 14a2, respectively, and the SV is lit and displayed in the setting mode. Unit 20a2, ON angle display unit 14a1 and OFF angle display unit 14a2 of the output timing angle display unit 14A
Flashing rising arrow symbol 15 corresponding to each
It has a display section for a1 and a falling arrow symbol 15a2, and is configured to display a rotation display monitor 21 that displays the rotation angle position, the rotation direction, and the rotation speed as a guide.

FIG. 4 is a block diagram showing the system configuration of the above-mentioned electronic cam switch. In FIG. 4, reference numeral 22 denotes a one-chip switch.
The microcomputer is provided with ROM 22A, RAM 22B and LCD driver 22C. Reference numeral 23 denotes an input circuit, which includes rotation angle information transmitted from the encoder 5 including the LED 5A and the LED driving circuit 5B via the encoder connection connector 3 and 12V supplied from the power supply circuit 24 via the constant voltage circuits 25A and 25B. Each voltage of 5V is input to the microcomputer 22.

A reset circuit 26 receives operation information of the erase key 13 and detection information of the power failure detection circuit 27 and inputs a reset signal to the microcomputer 22. 28 is a backup battery,
Reference numeral 29 denotes a system clock generation circuit, and reference numeral 30 denotes an LCD reference potential generation circuit which supplies a backup signal, a system clock, and an LCD reference potential to the microcomputer 22.

An output circuit 31 outputs a control signal as set to the rotating work equipment 6. 7 is a mode switching switch described above, 8
Is a setting mode designation switch for inputting mode switching information and setting mode designation information to the microcomputer 22.

Reference numeral 32 denotes a key switch for setting a program. It represents the cam No. key 17 and the like.

Next, the operation of the above configuration will be described with reference to the flowchart of FIG. Note that here, the cam
Select the operation step ST2 of No.2 and turn on the output timing
LC when setting angle 30 ° and OFF angle 41 ° in MAN mode
A display example on the D display screen 4 will be described with reference to FIGS. 6 (A) to 6 (D).

FIG. 6 (A) shows that the previous setting contents are erased by pressing the delete key 13 and the rotary work equipment 6 is pressed by pressing the origin specification key 12.
Is set to the origin 0, the 256/360 switching switch 10 is pressed and the display of the display angle display section 10a is designated as 360 to be displayed, the mode switching switch 7 is switched to the setting mode PRG and displayed, and the setting mode designation switch is displayed. 8 in manual mode
MAN and display it, and set value display section 20a1
5 shows a display state on the LCD display screen 4 before the start of the current setting in which the SV is lit and displayed, and a predetermined angle setting is started from this state.

First, the user presses the cam No. key 17 to select and specify cam No. 2 (step S30). Then, the user presses the step key 16 to select and designate the operation step ST2 (step S31).
LCD display screen 4 at the end of steps S30 and S31
The upper display state is as shown in FIG.

Next, when you press the ON / OFF key 15, the input of that key 15
It is determined whether the display state is the display state of the ON angle or the display state of the OFF angle (step S32). Based on the determination result, when the angle is the ON angle, the rising arrow symbol 15a1 is blinked and displayed (step S33). In this state, the ON angle of 30 ° is displayed on the display section 14a1 by pressing the + angle key 11A or the − angle key 11B, and then the set key 14 is pressed to display the ON angle of 30 °.
Set to ON angle (step S34). This step S34
The display state on the LCD display screen 4 immediately before the end of the operation is as shown in FIG. 6 (C).

When the setting of the ON angle as described above is completed, it is determined whether or not all the setting of the output timing angle is completed (step S35). When the setting of the output timing angle is completed, the angle setting operation is completed. If the angle has not been set yet, the flow returns to step S32 to shift to the setting of the OFF angle.

That is, press the ON / OFF key 15 and press the falling arrow symbol 15a2.
Blinks (step S36). In this state, the + angle key 11A or the-angle key 11B is pressed to
After displaying the F angle on its display section 14a2,
Press 4 to set it to 41 ° OFF angle (Step S3
7). The display state on the LCD display screen 4 immediately before the end of this step S37 is as shown in FIG. 6 (D).

At the time of setting the output timing angle as described above, the blinking of the arrow marks 15a1 and 15a2 allows the operator to clearly distinguish whether the current setting is the ON angle or the OFF angle, and to allow the operator to recognize the current setting. When the predetermined setting operation is completed, the output ON angle of 30 ° and the output OFF angle of 41 ° are both displayed side by side on the LCD display screen 4 and are in a non-flashing state corresponding to them. However, since the rising arrow symbol 15a1 and the falling arrow symbol 15a2 are represented, when visually confirming the output timing angle in the operation mode, the ON angle and the OFF angle are each distinguished so as not to be mistaken. can do.

In the above-described embodiment, an example in which an encoder having a resolution of 256 is used in order to reduce the cost of the entire system has been described. However, an encoder having a resolution of 360 may be used.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an appearance of an example of an electronic cam switch according to the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is an enlarged front view of a display device, FIG. 4 is a block diagram of the system configuration, FIG. 5 is a flowchart showing an angle setting operation, and FIG.
(A) to (D) show display examples on an LCD display screen which change with the angle setting, and FIG. 7 is a front view showing an outline of a conventional angle display device of an electronic cam switch. 4 LCD display screen 7 Mode switch 11A, 1
1B …… Angle key, 14 …… Set key, 14A …… Output timing angle display section, 14a1 …… ON angle display section, 14a2… OF
F angle display section, 15: ON / OFF key, 15a1: Rising arrow symbol, 15a2: Falling arrow symbol, 17: Cam No. key, 2
2 ... microcomputer.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G01D 7/00, 7/02 G05B 19/42 H01H 43/10

Claims (1)

(57) [Claims] 1. An angle display unit for displaying a current value of a rotation operation angle, and an output timing angle display unit for separately displaying an output ON angle and an output OFF angle to a device among the rotation operation angles, respectively. In the electronic cam switch angle display device provided on the display surface, when setting the output timing angle, the display content of the output timing angle display section is switched between an ON angle display state and an OFF angle display state. Key and ON of the output timing angle display section
Flashing rising and falling arrow symbols respectively corresponding to the angle display section and the OFF angle display section, and the above ON
Means for determining whether the / OFF key input is an ON angle display state or an OFF angle display state, and blinking the corresponding side of the above-mentioned blinking rising and falling arrow symbols based on the result of the determination. And a set key for setting a set ON angle and OFF angle. An electronic cam switch angle display device.