JPH0457128B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an operating switch device, and particularly to an operating switch device that transmits the operating status of a large number of operating switches by means of flashing lights instead of electrical conductors. be.

[Technical background of the invention]

Conventionally, in a control device using a large number of switches (hereinafter referred to as SW), as shown in FIG.
There is a method of wiring to the required location via electric wires 4 directly connected to the electric wires 4, and when the operation panel 2 is movable as shown in FIG. There is a way to bundle them together and pull them out. Furthermore, the method shown in Figure 3
This is to minimize the amount of peripheral wiring.
An auxiliary relay 8 is provided for each SW on the operation panel 2 and connected to a common power supply, and each auxiliary relay 8
The required number of contacts can be obtained by amplifying the contacts.

In Figure 4, each SW contact terminal is connected in common for each group, and the operated SW is determined by the combination of these terminals using a matrix circuit to obtain the necessary outputs such as auxiliary relay contacts. be.

[Problems with background technology]

In Figure 1 with the above configuration, if there are a large number of SWs or if a large number of contacts 3 of the same SW are required, the number of wiring will increase, resulting in increased manufacturing costs and the possibility of incorrect wiring. There are drawbacks that may cause
Further, in FIG. 2, consideration must be given to the selection of wires that can withstand movement and special work such as wire fixing devices. Furthermore, according to the methods shown in Figures 3 and 4, the number of wires around the SW is reduced, improving workability and efficiency during modification, but with either method, wiring must be done from the SW contacts. There is no change. In recent years, as devices are required to be more compact and denser, the external dimensions of the SWs themselves are becoming smaller and smaller, and the wiring around the SWs is becoming more densely packed.
Therefore, these problems of wiring density, work efficiency, loss time during modification, and reliability deterioration have not been satisfactorily solved.

[Purpose of the invention]

The present invention was made with the aim of solving the above-mentioned drawbacks, and by reducing the wiring around the SW as much as possible, it aims to improve workability, reduce costs, improve reliability, and enable high-density mounting of SW. The purpose of this invention is to provide an operating switch device.

[Summary of the invention]

In the present invention, a light emitting part built into each of a plurality of switches is made to emit blinking light at different predetermined cycles when each switch is operated, and this blinking light is received by a light receiving and translating device, and the cycle of this blinking light is The system attempts to detect the operated switch by counting the number of flashing lights for a certain period of time and determining the frequency of this flashing light.

[Embodiments of the invention]

Examples will be described below with reference to the drawings. FIG. 5 is an external view of an embodiment of a light-emitting pushbutton switch (hereinafter referred to as PBS) used in the operating switch device according to the present invention. And the light-emitting type PBS10,
Light-emitting type that houses the operation unit 6 and light-emitting element control circuit
It is composed of a PBS main body 10a and a light emitting section 11 that emits blinking light using a light emitting element.

FIG. 6 shows the basic circuit of the PBS main body 10a shown in FIG. It is composed of an oscillator OSC whose oscillation frequency is predetermined for each light-emitting PBS, a switch SW, a power source BT, a light emitting element LED, a driving transistor element TR, a logic element ADN, a resistor _R1, etc. Then, by operating the operating section 6 in FIG.
SW is closed and the light emitting element is activated at the oscillation period of the oscillator OSC.
The LED flashes. The flashing light is emitted to the outside from the light emitting section 11 shown in FIG.

FIG. 7 is a block diagram of the light receiving translation device. The light receiving section 12 includes a photosensitive element 12 such as a photodiode, and converts the received light into an electrical signal. The buffer circuit 13 amplifies and shapes the converted electrical signal into an appropriate waveform and outputs it to the counter circuit 14.
Add to. Note that the counter circuit 14 is set by a timer 15 to operate for a certain period of time. When an electrical signal is input from the buffer circuit 13 to the counter circuit 14, the timer 1
The electrical signals are counted for a certain period of time set by 5. The frequency of the input electrical signal can be determined based on this count number. The output conversion section 16 stores the frequency determined by the counter circuit 14 for a necessary period of time, and drives the output section corresponding to the frequency. This is the configuration of the light receiving translation device 18.

FIG. 8 is a configuration diagram of an embodiment of the operating switch device according to the present invention. This embodiment is a combination of a light-emitting PBS and a light-receiving translation device. That is, there is an operation panel 2 in which a large number (n) of light-emitting PBSs _{6 1} , 6 ₂ , 6 _{3 .} . . 6n shown in FIG.
A light receiving and translating device 18 including the following is arranged.

By operating the operating section 6 of the light emitting type PBS, the light emitting part 11 emits blinking light with a period corresponding to the light emitting type PBS. The flashing light is the light receiving translation device 1
When it reaches the light receiving part 12 of 8, the frequency of the flashing light is determined and the operated light emitting type is activated as explained in Fig. 7.
Output compatible with PBS can be obtained. This means that the necessary operation signal for the light-emitting PBS can be transmitted within an arbitrary range determined by the illuminance of the flashing light emitted from the light-emitting part 11 and the sensitivity of the light-receiving part 12 of the light-receiving and translating device 18. be.

FIG. 9 is a diagram for explaining that multiple selection detection is performed when two or more light emitting type PBSs are operated at the same time. That is, when the two light-emitting type PBSs 10 ₁ and 10 ₂ are operated simultaneously and emit light as shown in FIG. The period of this combined light becomes irregular, and there is a possibility that the light-receiving section that receives the light may malfunction.

FIG. 10 is a diagram showing another embodiment of the present invention that takes this point into consideration. FIG. 10 shows a plurality of counters and timers 14 ₁ , 14 ₂ , 15 ₁ , and 15 ₂ of the light receiving and translating device 18 shown in FIG. The determination can be made by detecting and comparing with the frequency comparator 22. Changes in illuminance can also be detected by converting blinking light into electrical signals and comparing them quantitatively. These methods make it possible to distinguish between normal one-point selection and multiple selection states. Compared to conventional multiple selection detection circuits based on combinations of contacts, which required detection circuits proportional to the number of operating switches, the fact that the detection circuits are independent of the number of light-emitting PBSs is a major cost advantage.

FIG. 11 is a block diagram of another embodiment according to the present invention. In the above description of the embodiment, the explanation was about one direction in which the corresponding output is obtained by operating the light-emitting type PBS, but in this example, as shown in the figure, the light-emitting type
PBS10, operation part 6, light emitting part 11, light receiving part 1
2', has a display section 19, and the light receiving translation device 18 has a light emitting section 1 with the same function as the light emitting section 11 of the light emitting type PBS.
1'. The light emitting unit 12 and display 19 attached to the light emitting type PBS are constructed of blocks shown in FIG. The frequency of the light received by the light receiving section 12' is determined by the counter 14, and the actually measured frequency is compared with the frequency preset by the frequency setting section 26 by the frequency comparison section 22, and the display driving circuit 25 is Via display 19
It lights up. On the other hand, the light receiving translation device 18
The internal structure is as shown in the block diagram of FIG. The part where the flashing light is received and the output is obtained is as explained in FIG. 7. In FIG. 13, when the output section further operates, the oscillator 27 oscillates at a frequency corresponding to the output, and the light emitting section 11' blinks via the light emitting section driving circuit 28. To explain a series of operations, when the operating section 6 of the light emitting type PBS is operated, a flashing light is emitted from the light emitting section 11, and an output is obtained from the output section 29 of the light receiving and translating device 18. At the same time, the light receiving and translating device 18 blinks the light emitting section 11' at a period corresponding to the light emitting type PBS. The flashing light is received by the light receiving section 12' provided on the light-emitting PBS side, and after detecting the flashing period, if it matches the set frequency, the display 19 is lit and the operation of the light-emitting PBS is accepted. This indicates that the
Note that between the light emitting section 11 and the light receiving section 12', the light emitting section 1
1' and the light receiving section 12 are light shielding bodies 23, 24.
has been established. According to this method, an advantage can be obtained in that there is no need to add any wiring, whereas the conventional method requires additional wiring for the display circuit. In addition, in Fig. 3, if the operation panel 2 with the SW attached and the external device 7 that uses its contacts are separated, the conventional method would be to wire the necessary number of multi-core cables between them. This required a large amount of materials and installation costs.
However, according to this embodiment, those costs can also be greatly reduced.

FIG. 14 is a conceptual configuration diagram of another embodiment according to the present invention, in which a condensing lens 20 is provided at the same position as the light receiving section 12 of the light receiving and translating device, and the condensed light is condensed into one beam. This is a method of transmitting the blinking light of the light emitting type PBS to the light receiving section 12 of the light receiving and translating device 18 placed at a required position by means of an optical fiber 21.

〔Effect of the invention〕

As explained above, according to the present invention, the light-emitting type
By incorporating a power supply into the PBS, there is no need for any peripheral wiring, or if the power is supplied externally, only two crossover wirings are required. When compared with the conventional methods shown in FIGS. 1, 3, and 4, this method offers significant advantages in terms of man-hours, efficiency, cost, etc. Furthermore, as shown in Fig. 2, even if the operation panel 2 is movable, the light-emitting type
As long as the position of the PBS is within a range determined by the illuminance of the flashing light and the sensitivity of the light receiving section, it can operate, and selection and fixing of electric wires can be made unnecessary. Furthermore, this method eliminates malfunctions caused by external surges, noise, etc., which are characteristic of optical transmission systems, and can be expected to expand the range of applications. When adding a light-emitting PBS, it can be easily done by simply processing the installation and connecting the power supply.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram of a conventional operation switch, Figure 2 is a configuration diagram of a conventional operation switch with a rotating operation panel, and Figure 3 is a circuit diagram of a conventional operation switch with as few wires as possible. , Fig. 4 is a circuit diagram of another operating switch, Fig. 5 is an external view of a light emitting element used in the operating switch device according to the present invention, Fig. 6 is a basic circuit diagram for the light emitting element, and Fig. 7 is a light receiving translation. FIG. 8 is a block diagram of the device; FIG. 8 is a diagram illustrating an embodiment of the operating opening/closing device according to the present invention; FIG. 9 is a diagram illustrating multiple selection detection; FIGS. 10 to 14 are other embodiments of the present invention. FIG. 1... Switch, 2... Operation panel, 3... Contact section, 4... Electric wire, 5... Electric wire fixing device, 6...
Operation unit, 7... External device, 8... Auxiliary relay, 9
...Matrix output section, 10...Light-emitting PBS,
11, 11'... Light emitting section, 12, 12'... Light receiving section, 13... Buffer circuit, 14... Counter, 15... Timer, 16... Output conversion section, 1
7...Output unit, 18...Light receiving translation device, 19...
Display unit, 20...Condensing lens, 21...Optical fiber, 22...Frequency comparison unit, 23, 24...Light shielding body, 25...Display drive circuit, 26...
Frequency setter, 27...Variable frequency oscillator, 28
...Light emitting unit drive circuit.

Claims (1)

[Scope of Claims] 1. In an operation switch device that detects a corresponding operation signal according to each operation state of a plurality of switches, the switch is provided in each of the plurality of switches, and when the switch is operated, the switch a light emitting unit that generates a flashing light with a different cycle each time; a light emitting unit that receives the flashing light, determines the frequency by counting the period of the flashing light for a certain period of time, and emits the flashing light based on the determined frequency; An operating switch device characterized by comprising a light receiving and translating device that detects a switch and outputs an output corresponding to the switch. 2. The operation switch device according to claim 1, wherein the light receiving and translating device is provided corresponding to each of the light emitting parts. 3. The operating switch device according to claim 1, wherein the light receiving and translating device receives the flashing light emitted from the light emitting section via an optical fiber.