JPH0737121Y2 - Control device - Google Patents

Description

Detailed Description of the Invention << Field of Invention >> This invention compares an input signal with a preset value and operates based on the result of various output modes, such as a temperature controller. The present invention relates to a control device capable of selectively specifying a mode.

<< Summary of Device >> The control device according to the present invention is such that when the operation mode having various output modes is selectively set, the contents of the set operation mode are used for displaying the input value and the set value. By displaying images in combination with display elements, the contents can be visually and intuitively confirmed at the time of setting operation.

<< Prior art and its problems >> This kind of control device having various output modes as operation modes usually has a DIP switch on the back surface of the main body of the device or inside the main body as the operation mode selection means. Either installed, or installed a rotary switch and changed the mode setting as needed.

However, this method has the following problems.

(1) When the DIP switch and the like are installed on the back surface of the device body, once the device body is fixed to the control panel, the workability when changing the setting or confirming it later is poor.

(2) When a DIP switch or the like is installed inside the main body of the device, the draw-out structure is usually adopted, and the waterproof and dustproof properties of the main body of the device are poor.

(3) It is uneconomical in terms of hardware resources because the cost is increased because the DIP switch is mounted and the I / O port is required.

Therefore, in order to solve these problems, a method of setting the operation mode by software using display characters can be considered.

However, also in that case, the following problems similarly arise.

(1) For a user who is accustomed to mode setting using a DIP switch or the like, when changing to mode setting using software, the operation method may be confusing.

(2) In the case of software, if the operation mode is expressed in correspondence with the numbers on the numerical display section, the operation mode must be confirmed while comparing the reference tables, which is inconvenient.

<Purpose of device> This device was made in order to solve the above-mentioned problems, and its purpose is to provide a DIP switch when the input operation for selecting the operation mode is realized by a software method. Similarly, it is an object of the present invention to provide a control device that facilitates setting operation and makes it easy to understand the content display of the set operation mode.

<< Structure and Effect of Device >> In order to achieve the above object, this device has a numerical value display section for displaying the input value from the controlled object or the preset setting value by a display element of at least three digits or more. In addition, in a control device which outputs an alarm output or the like to the outside in a preset output pattern based on the comparison result of the input value and the set value, the alarm output or the like is output to the outside based on the input value and the set value. In the case of output pattern storage means for storing a plurality of output patterns in the case of image display in the numerical display section in the above case, and for setting output patterns such as alarm outputs, the output patterns stored in the output pattern storage means are sequentially stored. Output pattern display means for displaying a segment on the numerical value display section, and a desired output pattern from the output patterns displayed by the output pattern display means. Output pattern selection means for selecting a screen, and a set value for outputting an alarm output or the like based on the output pattern selected by the output pattern selection means is input.

According to the present invention, the contents of the set operation mode are expressed as an image by combining a display element for numbers for displaying the input value and the set value, so that the contents of the operation mode can be grasped visually and intuitively. Therefore, the input operation for setting the operation mode is facilitated, erroneous input is reduced, and usability is improved.

<< Description of Embodiments >> Hereinafter, embodiments in which the present invention is applied to a temperature controller will be described.

FIG. 1 is a block diagram showing the electrical configuration of the temperature controller.

As shown in the figure, this temperature controller is a microcomputer 1
It is mainly composed of.

A measurement signal from a temperature sensor (not shown) is input to the input circuit 2 and then amplified by the amplification circuit 3 to be supplied to the A / D conversion circuit 4
After being converted into a digital signal by, the signal is input to the microcomputer 1.

From the key input circuit 7, a change in set value or the like is input by key operation.

In the microcomputer 1, by executing the built-in program based on these input data,
Various control operations as a temperature controller are performed.

As the output from the microcomputer 1, signals representing the measured temperature and the set value are output to the display drive circuit 11, and the values are digitally displayed on the display 12.

As other outputs, a signal for driving or stopping an external device is output to the output circuit 5, and a signal for outputting an alarm such as a beeper ringing or lamp lighting is output to the alarm output circuit 6.

Further, a power supply for driving the microcomputer 1 and the like is input via the power supply circuit 9 and the reset power failure detection circuit 10.

FIG. 2 is a layout view of the display panel 13 corresponding to the display unit 12.

As shown in the figure, on the display panel 13, a liquid crystal display unit 14 for numerically displaying the measured current temperature, a liquid crystal display unit 15 for displaying a set value input by key operation, a set value input and other Mode key 1 for operation input of
6, up key 17, down key 18 are arranged.

FIG. 3 is a diagram showing an example in which the display mode of FIG. 2 is switched to the setting input mode and the contents of the operating mode being set are represented by the combination of the numeral display elements of the liquid crystal display unit 15.

In the figure, a liquid crystal display section 15 consisting of four digits of a 7-segment element for displaying a numerical value displays an alarm output pattern having contents described later. Further, on the liquid crystal display unit 14, a character of "AL" indicating that the display content of the liquid crystal display unit 15 is an alarm pattern being set is represented by a 7-segment element.

Switching to the setting input mode shown in the figure is performed by a combination of the key operations of the mode key 16, the up key 17, and the down key 18, and similarly, the change of the output pattern contents, the input / change of the set value, etc. Keys 16-18 are used.

FIG. 4 is a diagram showing an alarm output pattern displayed on the liquid crystal display unit 15 and its operation contents in the setting input mode.

In this embodiment, 9 types of patterns can be set, and the temperature is hatched with the operation upper limit and lower limit temperatures specified by the input main set point and the operation range X, or any one of these temperatures as a boundary. An alarm signal is output in the area. In addition, in the patterns (6) to (8), the broken line display of the output range indicates that sequential standby is performed when the temperature controller is started.

In the pattern (9), the operation area can be specified only by inputting the operation range X in which the main set point is 0 ° C.

The pattern shown in the figure can also be expressed by combining three-digit numerical display elements.

Next, the operation of this device will be described with reference to the flowchart shown in FIG.

This flowchart shows only the processing in the mode for selectively setting and inputting the alarm patterns having various output modes.

First, the setting input mode is checked (step 51).

Next, when a key operation for changing the pattern is performed, the pattern displayed on the liquid crystal display unit 15 is updated in the order shown in FIG. 4 (steps 52Y and 53).

After the pattern is decided, when the key operation for inputting the main set value is performed, the set value displayed on the liquid crystal display 14 etc. is incremented or decremented digit by digit and then the specified value is set. (Step 54Y, 5
Five).

Next, when a key operation for inputting the operation range value X is performed, the set value displayed on the liquid crystal display 14 or the like is incremented or decremented for each digit, and then the specified value is set ( Steps 56Y, 57).

By repeating the above process, although the operation mode setting is realized by software, the DIP
The setting operation can be performed just like a switch.

Moreover, since the set content is displayed as an image,
The contents can be confirmed surely during the setting operation, and erroneous input can be prevented.

In addition, although the embodiment has been described with respect to the temperature controller, the same applies to a control device having an operation mode in which various modes of output are performed based on a measurement value signal obtained from various measuring means other than temperature measurement. It is possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electric configuration when the present invention is applied to a temperature controller, FIG. 2 is a layout diagram of a display panel 13 corresponding to the display unit 12 in FIG. 1, and FIG. FIG. 4 is a diagram showing a display example of the display panel in the input mode, FIG. 4 is a diagram showing an alarm output pattern and operation contents displayed on the liquid crystal display unit 15 in the setting input mode, and FIG. 5 is a flowchart showing the operation. 1 ... Microcomputer 2 ... Input circuit 3 ... Amplification circuit 4 ... A / D conversion circuit 5 ... Output circuit 6 ... Alarm output circuit 7 ... Key input circuit 9 ... Power supply circuit 10 ... Reset power Disconnection detection circuit 11 …… Display drive circuit 12 …… Display unit 13 …… Display panel 14 …… Liquid crystal display section 15 …… Liquid crystal display section 16 …… Mode key 17 …… Up key 18 …… Down key

Claims (1)

[Scope of utility model registration request] 1. A numerical display section for displaying an input value from a controlled object or a preset setting value by a display element of at least three digits or more, and based on a comparison result of the input value and the setting value. In a control device that outputs alarm output etc. to the outside with a preset output pattern, the output pattern when outputting the alarm output etc. to the outside based on the above input value and set value An output pattern storage means for storing a plurality of image representations, and an output pattern display means for sequentially displaying the output patterns stored in the output pattern storage means in a segment on the numerical value display section when setting an output pattern such as an alarm output, Output pattern selection means for selecting a desired output pattern from the output patterns displayed by the output pattern display means, A control device, wherein a set value for outputting an alarm output or the like is input based on the output pattern selected by the output pattern selection means.