JP2010232128A - Switch device with display function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switch device having maintenance data displayed without adversely affecting equipment to be controlled 51. <P>SOLUTION: A dip switch 44 for mode changeover is connected in series between the equipment to be controlled 51 as a multifunctional switch control object and a liquid crystal upper part switch 41. Accordingly, by changing the dip switch 44 for mode changeover into a maintenance mode, the liquid crystal upper part switch 41 is separated from the equipment 51 as a multifunctional switch control object, so that the latter 51 is not affected if the liquid crystal upper switch 41 is operated. If the dip switch 44 for mode changeover is in a maintenance mode, maintenance data is displayed on an LCD 33, in decision of input patterns of the liquid crystal upper switch 41. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a switch device with a display function, and particularly relates to facilitating maintenance.

  Patent Document 1 discloses a switch device incorporating a CPU. In such a switch device, the switch device determines whether or not a certain number of times of pressing has elapsed, and a warning is given when it has elapsed.

JP-A-9-298020

  The switch device disclosed in Patent Document 1 can display a warning when a predetermined number of times is exceeded and can output this warning to an external control device. However, if the maintenance inspector wants to know the current number of times of pressing at an arbitrary timing, it is possible to read information from an external control device, but there is a problem that information cannot be obtained by the switch device alone. there were.

  In order to solve such a problem, when a long press is performed, it may be determined that the mode is an inquiry mode for the number of presses, but it is necessary to press the switch for a long time. This causes a problem that the state of the control target device connected to the switch is changed.

  This problem applies not only to the number of times the switch is pressed, but also to maintenance management data that is changed depending on the frequency of use of the switch.

  An object of the present invention is to solve the above-described problems and to provide a switch device with a display function that can display maintenance management data without changing the state of a control target device.

  (1) A switch device with a display function according to the present invention includes: 1) a first input switch for switching a connected control target device to a selected state (on) or a non-selected state (off); 2) the selected state A storage unit for storing selected state image data representing the non-selected state and non-selected state image data representing the non-selected state, and 3) displaying the selected state image data when the first input switch is in the selected state In the switch device with a display function, comprising: a control unit that displays the non-selected state image data on the display unit when the first input switch is in the non-selected state. A second input switch for switching to a non-control mode in which the input switch is disconnected from the control target device, and 5) the control unit stores maintenance management data in the storage unit, and the second input switch When the switch is switched to the non-control mode by H, when the predetermined input pattern is given to the first input switch, the maintenance management data is displayed on the display unit.

  Therefore, by setting the first input switch to the non-control mode using the second input switch, it is possible to input a predetermined pattern to the first input switch and display maintenance management data. At this time, since the first input switch is disconnected from the control target device, even if an operation is performed, the control target device is not affected.

  (2) In the switch device with a display function according to the present invention, the control unit stores a plurality of patterns as a predetermined input pattern, and when any one is selected, the corresponding maintenance management data is stored. Display on the display unit. Therefore, a plurality of maintenance management data can be displayed.

  The meaning of terms used in the claims will be described. The “maintenance management data” is data necessary for maintenance management, and includes data for maintenance management that changes with use of the first input switch. In the embodiment, “number of presses”, “scheduled replacement date”, “ID”, “switch model number (manufacturing number)”, “lot number”, “inquiry destination”, and the like are applicable. In addition, the “first input switch” corresponds to the “liquid crystal upper switch 41” in the embodiment. In the embodiment, “non-control mode” corresponds to “maintenance mode”. The “second input switch” corresponds to the “mode switching dip switch 44” in the embodiment. The “display unit” corresponds to the LCD 33 in the embodiment, but is not limited to the LCD. For example, a plurality of LEDs may be arranged in a predetermined pattern.

  The “control target device” corresponds to a multi-function switch control target device.

It is a figure which shows the hardware constitutions of the multifunction switch 1 by one Embodiment of this invention. 5 is a flowchart stored in a memory 27. It is a display example of a normal mode. It is a display example of a special mode.

  FIG. 1 shows a hardware configuration of a multifunction switch 1 which is a switch device with a display function according to an embodiment of the present invention.

  The multifunction switch 1 includes a microcomputer 30, an LCD 33, a liquid crystal upper switch 41, a mode switching DIP switch 44, an RS485 driver IC 37, and a connection connector 39.

  The liquid crystal upper switch 41 switches the state of the connected multifunction switch control target device 51. The mode switching dip switch 44 is connected in series between the multifunction switch control target device 51 and the liquid crystal upper switch 41.

  The microcomputer 30 includes a CPU 23, a memory 27 (flash memory / RAM), a UART 25, an I / O 29, and an LCD controller 31.

  A liquid crystal upper switch 41 and a mode switching dip switch 44 are connected to the I / O 29. The state of the contacts 41b and 44b is given to the I / O 29.

  The CPU 23 executes processing based on the main program stored in the memory 27. Specifically, a display control command is issued to the LCD controller 31 based on the states of the two switches 41 and 44. In response to the display control command, the LCD controller 31 displays a predetermined image on the LCD 33. Such processing will be described later.

  The UART 25 converts RS485 standard serial data / parallel data. The RS485 driver IC 37 performs conversion to a signal level of the RS485 standard. Thereby, the multifunction switch 1 can perform data communication with the personal computer 140 which is an external device via the cable connected to the connection connector 39. An RS485 converter may be provided between the personal computer 140 and the PC.

  The multifunction switches 111, 112, and 113 have the same configuration as the multifunction switch 1, and control the multifunction switch control target devices 121, 122, and 123, respectively. Similarly to the multi-function switch 1, data communication is performed with the personal computer 140 via a cable. Data communication is also possible between the multifunction switches.

  Next, processing by the program stored in the memory 27 will be described with reference to FIG.

  First, the case where the mode switching DIP switch 44 is set to the “normal mode (ON state)” will be described.

  The CPU 23 detects the state of the contact 44b in the mode switching DIP switch 44 via the I / O 29 (step S1 in FIG. 2).

  In this case, since the mode switching DIP switch 44 is in the “normal mode (ON state)”, the contact 44a is in the ON state. Accordingly, the liquid crystal upper switch 41 and the multi-function switch control target device 51 are connected, and the multi-function switch control target device 51 is on / off controlled by the operation of the liquid crystal upper switch 41.

  Further, the CPU 23 detects the state of the contact 41b of the liquid crystal upper switch 41 via the I / O 29 (step S3 in FIG. 2). When the liquid crystal upper switch 41 is on (selected state), the CPU 23 gives a command to the LCD controller 31 to display a pre-stored on image (step S5 in FIG. 2). On the other hand, when the liquid crystal upper switch 41 is off (non-selected state), the CPU 23 gives a command to the LCD controller 31 to display a pre-stored off image (step S7 in FIG. 2). Such a normal mode is the same as the conventional mode. Thereby, as shown in FIG. 3, the on image and the off image are displayed on the LCD.

  Next, the case where the mode switching DIP switch 44 is set to the “maintenance mode” will be described.

  The CPU 23 detects the state of the contact 44b in the mode switching DIP switch 44 via the I / O 29 (step S1 in FIG. 2).

  In this case, since the mode switching DIP switch 44 is in the “maintenance mode (off state)”, the contact 44a is in the off state. Therefore, the liquid crystal upper switch 41 and the multifunction switch control target device 51 are disconnected. As a result, the liquid crystal upper switch 41 can be operated without changing the state of the multifunction switch control target device 51.

  The CPU 23 detects an input pattern to the contact 41b of the liquid crystal upper switch 41 via the I / O 29 (step S11 in FIG. 2). When the input pattern to the liquid crystal upper switch 41 is the first pattern, the CPU 23 gives a command to the LCD controller 31 to perform the pressing number display process (step S13 in FIG. 2). The number-of-presses display process will be briefly described. The memory 27 has a cumulative count number storage area. When the switch 41 is pushed down once, the CPU 23 increments the value R stored in this cumulative count number storage area. By reading the value R stored in this cumulative count number storage area and giving it to the LCD controller 31, as shown in FIG. 4A, it is possible to display the number of times of pressing up to now.

  On the other hand, when the input pattern to the liquid crystal upper switch 41 is the second pattern, the CPU 23 gives a command to the LCD controller 31 to perform the replacement date display process (step S15 in FIG. 2).

  Details of the scheduled replacement date display process will be described. In addition to the cumulative count number storage area described above, the memory 27 has an upper limit count number storage area and a total number of days storage area for storing the number of days from the start of use to the present. In the upper limit count number storage area, an upper limit value T of the number of uses is stored in advance. In the total number of days storage area, the CPU 23 stores the number of days Dc from the start of use to the present. Further, as already described, the memory 27 stores a value Rc that is a cumulative count number.

  From these values, the number of days Dx from the present to the scheduled replacement date can be predicted by the following formula.

Dx = Dc * T / Rc
By adding this Dx to the current date, the scheduled replacement date can be calculated. By giving this scheduled replacement date to the LCD controller 31, the scheduled replacement date can be displayed as shown in FIG. 4B.

  In the present embodiment, input data of tons (for example, press for 1 second) and tons-to (for example, press for 2 seconds) is used as the first pattern, and input patterns of tons, tons, and tons are used as the second pattern. However, the present invention is not limited to this.

  As described above, in the present embodiment, the mode switching dip switch 44 is provided. When the switch 44 is in the maintenance mode, the input pattern of the liquid crystal upper switch 41 is determined and the first pattern is used. In some cases, the total number of times of pressing is read out and displayed, and in the case of the second pattern, the scheduled replacement date is predicted based on the history of the total number of times of pressing and displayed. In this way, maintenance management of the multifunction switch 1 can be performed.

  The mode switching dip switch 44 is connected in series between the multifunction switch control target device 51 and the liquid crystal upper switch 41. Accordingly, by switching the mode switching dip switch 44 to the maintenance mode, the liquid crystal upper switch 41 and the multi-function switch control target device 51 are disconnected. Therefore, even if the liquid crystal upper switch 41 is operated, the multi-function switch control target device No impact on 51.

  In the present embodiment, two types of display are possible by storing two input patterns input to the liquid crystal upper switch 41. However, the present invention is not limited to this, and only one pattern may be stored. Further, three or more types of patterns may be stored so that these patterns can be displayed. For example, if the third pattern is ton-to, the ID of the switch is displayed. The ID display corresponds to data unique to the switch when performing communication. This ID may be stored in advance in the memory 27 and read out. In addition, the switch model number (manufacturing number), lot number, inquiry destination, and the like may be displayed as a fourth pattern.

  Further, in the present embodiment, in the non-control mode, the control target device is separated in hardware by a configuration in which a dip switch is connected between the liquid crystal upper switch and the multifunction switch control target device. , Without connecting the DIP switch between the LCD upper switch and the multifunction switch control target device, all the information is concentrated in the microcomputer 30, and it is judged which state, the multifunction switch according to the situation The control target device may be separated by software by adopting a configuration for controlling the output to the control target device.

  In this embodiment, although the case where the liquid crystal part was used as a display part was demonstrated, you may use LED etc. as a display part, for example.

  Moreover, although the case where the liquid crystal upper switch 41 was provided on the liquid crystal which is a display part was demonstrated, it is not limited to this.

  This multifunction switch can be used for various devices such as device control, vending machines, and ticket machines.

  In the present embodiment, the liquid crystal upper switch and the multifunction switch control target device are both configured by two systems: a mechanical system and a microcomputer input system. As a result, even if the microcomputer is broken, there is an advantage that the function as a switch is not impaired only by being unable to display on the display unit.

  In the above embodiment, in order to realize each function, a CPU is used and this is realized by software. However, some or all of them may be realized by hardware such as a logic circuit.

Claims (2)

A first input switch for switching a connected control target device to a selected state (on) or a non-selected state (off);
A storage unit for storing selected state image data representing the selected state and non-selected state image data representing the non-selected state;
When the first input switch is in the selected state, the selected state image data is displayed on the display unit, and when the first input switch is in the non-selected state, the non-selected state image data is displayed. A control unit for displaying on the display unit,
In a switch device with a display function comprising
A second input switch that switches the first input switch to a non-control mode separated from the device to be controlled;
The control unit stores maintenance management data in the storage unit, and when the control unit is switched to the non-control mode by the second input switch, the first input switch has a predetermined input pattern. When given, displaying the maintenance management data on the display unit,
A switch device with a display function. In the switch device with a display function according to claim 1,
The control unit stores a plurality of patterns as predetermined input patterns, and when any of them is selected, the corresponding maintenance management data is displayed on the display unit,
A switch device with a display function.

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