KR0117928Y1 - Control paneu - Google Patents

Abstract

The present invention relates to a control panel, N switches (S ₁ ~ S _N ) to be turned on or off according to the state of the monitoring target and N light emitting parts (L ₁ ~ L) to be lit according to the switches (S ₁ ~ S _N ) L _N ) and a sounding unit 5 for generating a sound informing the state of the monitoring target by oscillating at a specific frequency according to the switches S ₁ to S _N. Notify the operator.

Description

Control panel

1 is a circuit diagram of a control panel according to the present invention,

2 is a circuit diagram showing a conventional control panel.

* Explanation of symbols for main parts of the drawings

1: power switch 3: lamp check switch

10: Oscillation part L ₁ to L _N : Lamp

D ₁ ~ D _2N , TD ₁ ~ TD _N : Diode S ₁ ~ S _N : Switch

SP: Speaker

The present invention relates to a control panel that displays the status of a monitoring object such as a failure of a machine tool device or a fire of a building with a lamp and informs the operator. In particular, the sound is changed by varying the tone depending on the status of the monitoring object. It is related to a control panel that generates and displays at the same time as a lamp.

Recently, as various electronic control devices are widely used, it is possible to automate many tasks that previously depended on manual work, and for this purpose, various sensors are attached to the monitoring targets such as each workshop and building, and the state of the monitoring target from a remote location. To monitor. Such automatic control (or monitoring) systems are known as building automation systems (BAS), home automation systems (HA), and factory automation systems (FA). By the way, in such various control and monitoring systems, the control panel is widely used to inform the operator of various conditions of the monitoring target (for example, fire alarm, door open, temperature and humidity status, failure status, etc.).

Such a conventional control panel has a power switch (first) for applying power to the control panel itself as shown in Figure 2, and switches that are turned on or off depending on the state of the N monitoring objects (not shown) ( S ₁ to S _N ), lamps L ₁ to L _N connected in series to the switches S ₁ to S _N to indicate the state of the monitoring target, and lamps L ₁ to L _N To connect the lamp check switch (3) and one end of the lamp check switch (3) to each connection point that each of the switches (S ₁ ~ S _N ) and each of the lamps (L ₁ ~ L _N ) in common Diodes TD ₁ to TD _N.

The conventional control panel configured as described above turns on the lamps L ₁ to L _N simultaneously by applying voltage to the _N lamps L ₁ to L _N when the lamp check switch 3 is 'on'. At this time, the operator considers the lamp that is not lit to be a failed lamp and replaces it. In addition, when all the lamps are normal, if a particular switch is 'on' according to the state of the monitoring target, the corresponding lamp is turned on to inform the operator of the monitoring target status. For example, as a control panel used in the security system, the first lamp (L ₁ ) to inform whether the fire in the first area, the second lamp (L ₂ ) to let you know the security status of the first area. Then, when a fire occurs in the first region, the first switch S ₁ of the control panel is 'on', and when the external intrusion is detected in the first region, the second switch S ₂ is 'on'. Therefore, when the first lamp (L ₁ ) and the second lamp (L ₂ ) is turned on, the operator can know that a fire has occurred in the first area and there is an external invasion, and thus can take appropriate measures. Make sure

On the other hand, as a control panel used in an automatic production system, if the first lamp (L ₁ ) indicates the operating state of the first machine tool, and the second lamp (L ₂ ) indicates the operating state of the second machine tool, By monitoring the status of the first and second lamps, the operator can monitor the operating status of the first and second machine tools located on the production line. In addition, by installing a sensor for each component block in one machine tool, the state of each component block can be monitored.

However, the conventional control panel has a problem in that the status of the monitoring target is not displayed correctly when the lamp is broken because the status of each monitoring target is displayed only by the lamp. In other words, if the equipment to be monitored causes a failure, if the lamp fails or the operator is not informed correctly, it causes a great loss.

On the other hand, the lamp check switch (3) 'on' can check whether the lamp is broken, but the operator has to check frequently, it was very inconvenient, and if the operator did not inadvertently check the above problem occurred.

Accordingly, the present invention is to provide a control panel that generates an alarm sound by varying the tone according to the state of the object to be monitored in order to solve the conventional problems as described above, and also displays as a lamp.

The control panel of the present invention for achieving the above object is in the control panel to inform the operator of the state of the N monitoring targets with light emission and a predetermined tone,

N switching means 'on' or 'off' according to the state of the monitoring object;

N light emitting means lit in accordance with the switching means; And

And a sounding means for generating a sound informing a state of the monitoring target by oscillating a predetermined frequency according to the switching means.

Hereinafter, with reference to the accompanying drawings will be described in detail the device of the present invention.

1 is a circuit diagram showing a control panel according to the present invention, the control panel panel that informs the operator of the state of the N monitoring targets with the lighting of the lamp and a predetermined tone, the status of the monitoring target (for example, the failure of the machine tool) or not, and N of switches (S ₁ ~ S _N) which is turned on or off according to whether the fire in the building); N light emitting parts L ₁ to L _N that are turned on when the switch is turned on; When the switch is turned on, the sounding unit 5 generating a sound informing a state of the monitoring target by oscillating a predetermined frequency and the light emitting unit temporarily to test whether the light emitting units L ₁ to L _N have failed. A lamp check switch 3 for applying power and a power switch 1 for supplying or cutting off DC power to the control panel. In addition, the pronunciation unit 5 includes an oscillation unit 10 oscillating at different frequencies according to the state of the monitoring target, and a speaker SP for converting the oscillation signal of the oscillation unit 10 into an audible sound, and the oscillation unit 10. ) Includes a junction transistor UJT and N resistors R ₃ to R _{N + 2} that vary the oscillation frequency of the junction transistor UJT when the switch is turned on.

Next, the operation of the device of the present invention configured as described above will be described in detail.

When the power switch (1) is 'on' to operate the control panel by supplying a DC voltage (for example, 28VDC) to the control panel. N switches S ₁ to S _{N that} are turned on or off depending on the state of the object to be monitored are implemented by various sensors to monitor the state of the object to be monitored. For example, if the monitoring object is 'breakdown of the machine tool', the switch is 'off' during normal operation of the machine tool, and the switch is 'on' when the machine tool has failed.

In addition, when the operator 'turns on' the lamp check switch 3 to test the state of the lamps L ₁ to L _N , a DC voltage is applied to each lamp through the diodes TD ₁ to TD _N so that all lamps Lights up. At this time, the lamp that is not lit is judged to be broken and the operator replaces it.

The oscillator 10 is implemented by a unitary transistor (UJT), a resistor (R ₁ ~ R _{N + 2} ) and a capacitor (C ₁ ), when a particular switch is 'on' according to the state of the monitoring target is connected to the switch It oscillates at a frequency determined by the resistance value. Here, the resistors R ₁ and R ₂ and the capacitor C ₁ are bias resistors and capacitors for setting the oscillation conditions. The unit transistor UJT is configured to oscillate at a predetermined frequency by a DC voltage applied to a gate through a resistor (R ₂ to R _N ) connected in series to the switch when the switch specific to the state of the monitoring object is turned on. do. At this time, since the resistance values of the resistors R ₂ to R _{N + 2} connected to each of the switches S ₁ to S _N are different, the frequency of oscillation varies according to the switch that is turned on, and thus the tone is changed. The operator can then identify the faulty device or fault condition. The speaker SP converts the electrical oscillation signal of the oscillator 10 into an audible sound to inform the operator of the state of the monitoring target with a specific tone.

The light emitting units L ₁ to L _N are implemented as lamps or light emitting diodes (LEDs), and are turned on when the corresponding switches are 'on' so that the state of the monitoring target can be visually identified. In addition, diodes D ₁ to D _2N and TD ₁ to TD _N are used for protection and isolation.

As described above, the control panel according to the present invention not only lights up the lamp but also informs the state of the monitoring object, so that the status of the monitoring object can be reliably informed to accurately identify the state of the monitoring object. .

Claims (1)

N fault contacts S1 to Sn turned on / off according to the state of the monitoring object; N lamps (Ll to Ln) connected in series with the fault contacts and turned on when the corresponding contacts are turned on; N resistors (R3 to RN + 2) having different resistance values and connected to the fault contacts to provide a predetermined input voltage; A UJT for generating an oscillation signal of a predetermined frequency according to an input voltage provided through a resistor of which the contacts of the N resistors are turned on; A speaker (SP) for converting the oscillation signal of the UJT into an audible sound; And a lamp check switch (3) for temporarily applying power to the lamp to test whether the N lamps have failed.