KR102233858B1 - Apparatus for converting a signal - Google Patents

Abstract

An objective of the present invention is to convert a signal output from an NPN sensor into another type of signal according to a type of a control device. To this end, an apparatus for converting a signal includes: a first connector for outputting an NPN-type signal and a voltage as an NPN-type sensor is connected; a signal conversion unit for operating based on the voltage output through the first connector, receiving the NPN-type signal to convert the NPN-type signal into a PNP-type signal, and outputting the PNP-type signal; a second connector for outputting the PNP-type signal and the voltage output through the signal conversion unit through an output terminal and a voltage terminal, respectively; and a light emitting unit including at least one light emitting element for emitting light according to an input state of the NPN-type signal, and a light emitting element for emitting light according to an input state of the voltage through the second connector.

Description

Signal conversion device {APPARATUS FOR CONVERTING A SIGNAL}

The present invention relates to a signal conversion device capable of converting an output signal of an NPN type sensor into a PNP or NPN signal and outputting the converted signal.

In general, proximity sensors are mostly made of semiconductor components.

Proximity sensors are used to switch outputs (output or cut off) when semiconductor components such as transistors detect the proximity of an object.

In general, sensors with 3-wire connection method can be divided into PNP type and NPN type according to the circuit and transistor configuration method.

The classification of the PNP and NPN types does not matter whether the sensor is a normally open (NO) type or a normally closed (NC) type, and both PNP and NPN type sensors can have NO and NC contacts.

For this reason, whether to use a PNP or NPN sensor type depends on the environment of the circuit in which the sensor will be used. That is, the NPN type sensor connects the output line to the terminal of the relay coil.

Recently, the PNP method has been used more than the NPN method.

When selecting the sensor type in the environment using PLC, it is decided according to the type of PLC input card. That is, there are two types of PLC input cards: a sink type through which current flows through the input terminal of the input card, and a source type through which current flows through the input card input terminal.

For this reason, depending on the type of PLC input card, in order to change the NPN output (sink output) to the PNP output (source output) or the PNP output to NPN output, an external additional device, that is, a signal converter, is required.

The signal conversion device is an interface device that serves as a relay that transmits the output of a controller device (hereinafter referred to as'control device') such as a PLC or various electronic devices to various output devices.

The control unit connected to the input terminal of the relay signal conversion device according to the prior art is divided into a PNP open collector type control unit using a PNP type transistor at the output terminal and an NPN open collector type control unit using an NPN type transistor. .

The output terminal of the PNP open-collector type controller always outputs a signal of 0V low, and is converted to output a 24V high signal when the control state changes, while the output of the NPN open-collector type controller is always 24V high. The signal in the state is output, and is switched to output the signal in the 0V low state when the control state is changed.

As such, the NPN-type and PNP-type controllers change their state from high signal to low signal or from low signal to high signal in opposite directions according to the type of transistor installed in the output terminal and output the output. Since the operation method is different depending on the output type of the control device to be connected to the terminal, it is difficult to manufacture it for common use, so manufacturing cost is increased as it is made exclusively in advance according to the output method of the control device. There is an inconvenience in that it is provided or the user has to perform wiring work according to the purpose.

Republic of Korea Patent Registration No. 10-1624104 (published on May 19, 2016)

The present invention provides a signal conversion device capable of converting a signal input from an NPN-type sensor to a PNP-type or NPN-type signal and outputting the converted signal.

In addition, the present invention provides a signal conversion device capable of converting and outputting a signal input from an NPN-type sensor into a PNP-type or NPN-type signal through a user-operable switching terminal.

In addition, the present invention provides a signal conversion device including a plurality of light-emitting elements capable of checking a state of a signal input from an NPN type sensor, a state of a signal that is converted and output, and a power input state.

In addition, the present invention provides a signal conversion device capable of protecting a circuit by blocking overcurrent.

The problem to be solved by the present invention is not limited to those mentioned above, and another problem to be solved that is not mentioned can be clearly understood by those of ordinary skill in the art from the following descriptions. will be.

In order to solve the above-described problem to be solved, the signal conversion device according to an embodiment of the present invention includes a first connector for outputting an NPN-type signal and voltage as an NPN-type sensor is connected, and a voltage output through the first connector. A signal conversion unit that receives the NPN type signal and converts it into a PNP type signal and outputs the PNP type signal, and a second PNP type signal and voltage output through the output terminal and a voltage terminal. A light-emitting unit including a connector, at least one light-emitting device that emits light according to an input state of the NPN-type signal, and a light-emitting device that emits light according to a state in which a voltage is input through the second connector.

According to an embodiment of the present invention, the signal conversion device switches the first connector according to a user's manipulation to connect the first connector to a signal conversion unit to output the NPN-type signal to the signal conversion unit or to the first connector It may further include a switching unit connected to the second connector to output the NPN-type signal to the output terminal of the second connector.

According to an embodiment of the present invention, the switching unit receives each NPN type signal and voltage output through the first connector through a resistor, and converts each of the NPN type signals to the signal conversion unit according to a user's switching operation. It may be configured with first to third switches outputting to or directly outputting each of the NPN-type signals to the second connector.

According to an embodiment of the present invention, the signal conversion device further includes a connection part connected to the signal conversion part to receive the PNP type signal and output it to the second connector, and the light emitting part is connected to the input terminal of the connection part. It may further include a light emitting device that emits light according to the state of the voltage applied to the connection part.

According to an embodiment of the present invention, the signal conversion device may further include a fuse for preventing overcurrent from flowing, and a fixing hole for fixing the signal conversion device to an arbitrary device.

According to the above-described problem solving means of the present invention, it is possible to convert a signal input from an NPN type sensor to a PNP type or an NPN type signal and output it, as well as the state of the signal input from the NPN type sensor, and the state of the converted signal. And by providing a signal conversion device including a plurality of light emitting elements capable of checking the power input state, etc., the user can easily convert the signal of the NPN type sensor into a PNP type signal.

In addition, according to the above-described problem solving means of the present invention, by providing a signal conversion device capable of converting and outputting a signal input from an NPN-type sensor through a switching terminal that can be operated by a user into a PNP-type or NPN-type signal, The user can easily convert the signal according to the type of control device.

1 is a block diagram showing the overall configuration of a signal conversion apparatus according to an embodiment of the present invention.
2 is a diagram illustrating a process of converting an NPN-type signal into a PNP-type signal by a signal conversion apparatus according to an embodiment of the present invention.
3 is a diagram illustrating a process of outputting an NPN-type signal as an NPN-type signal by a signal conversion device according to an embodiment of the present invention.
4 is a view showing the front side of a circuit board in a form in which a signal conversion device according to an embodiment of the present invention is actually manufactured.
5 is a view showing the rear surface of a circuit board in which a signal conversion device according to an embodiment of the present invention is actually manufactured.

Hereinafter, a specific embodiment of the present invention will be described with reference to the drawings. The following detailed description is provided to aid in a comprehensive understanding of the methods, devices, and/or systems described herein. However, this is only an example and the present invention is not limited thereto.

In describing the embodiments of the present invention, when it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout the present specification. The terms used in the detailed description are only for describing embodiments of the present invention, and should not be limiting. Unless explicitly used otherwise, expressions in the singular form include the meaning of the plural form. In the present description, expressions such as "comprising" or "feature" are intended to refer to certain features, numbers, steps, actions, elements, some or combination thereof, and one or more It should not be construed to exclude the presence or possibility of other features, numbers, steps, actions, elements, any part or combination thereof.

Hereinafter, an apparatus for converting an output signal will be described with reference to the accompanying drawings.

1 is a block diagram showing the overall configuration of a signal conversion apparatus according to an embodiment of the present invention.

As shown in Figure 1, the signal conversion device is for converting the output of the NPN-type sensor into a PNP-type or NPN-type output, the first connector 100, the switching unit 120, the signal conversion unit 140, The connection unit 160, the second connector 180, and a plurality of light emitting devices 190 may be configured.

The first connector 100 is an NPN type type, in which a circuit and a sensor composed of a transistor are connected, and may include a power terminal for supplying power and a signal input terminal for receiving a signal from an NPN type sensor. As an example, a 10-pin connector may be mentioned, but the present invention is not limited thereto.

The switching unit 120 is capable of a user's switching operation, and may connect the first connector 100 to the second connector 180 or to the signal conversion unit 140 according to the user's switching operation. That is, the switching unit 120 is composed of first, second, and third switches 122, 124, 126, and the switching operation of the first to third switches 122, 124, 126 (switching operation according to the user's manipulation) ) To convert the NPN type signal (hereinafter referred to as'first signal') output from the three signal input terminals of the first connector 100 into a PNP type signal (hereinafter referred to as'second signal') It may be output to the signal conversion unit 140 for, or may be directly output to the second connector 180 according to the switching operation of the first to third switches 122, 124, and 126.

That is, the first to third switches 122, 124, 126 are slide-type switching elements, and output the first signal to the signal conversion unit 140 or to the second connector 180 according to the user's sliding operation. Can be printed.

The signal conversion unit 140 is for converting a first signal output from the first to third switches 122, 124, 126 of the switch 120 into a second signal, for example, a photocoupler. .

That is, the signal conversion unit 140 receives a first signal and a voltage output from the first to third switches 122, 124, 126 of the switching unit 120 and emits light. It is composed of a plurality of transistors that operate according to an optical signal according to the light emission of, and may convert the first signal into a second signal and output it to the connector 160.

The connection unit 160 may receive a second signal and a voltage output from a transistor connected to each of the plurality of light emitting diodes of the signal conversion unit 140 and then output this to the second connector 180. Specifically, the connection unit 160 is composed of three 2-pin type first to third headers 162, 164, 166, and the signal conversion unit 140 at one end of the first to third headers 162, 164, 166. ) Is applied to the second signal output from each transistor, and after receiving voltage to the other ends of the first to third headers 162, 164, 166, one end of the first to third headers 162, 164, 166 A second signal that is input as may be output to the second connector 180.

The second connector 180 may include a signal output terminal for outputting a second signal output through the connection unit 160 or a first signal output from the switching unit 120, and a plurality of power terminals for receiving power. It can be, for example, it may be a 10-pin connector. That is, the second connector 180 may receive and output a first or second signal through three signal output terminals, and may receive and supply power through other terminals.

Meanwhile, the signal conversion device according to an embodiment of the present invention may include a plurality of light emitting elements 190. Specifically, the signal conversion device includes a light emitting element 190 that emits light according to an input state of a first signal input through the first connector 100, and a second input to the connection unit 160 output from the signal conversion unit 140. 2 A light-emitting element 190 that emits light according to a state of inputting a signal, and a light-emitting element 190 that emits light according to a state in which a voltage is output to the second connector 180 may be included.

A process of operating the signal conversion apparatus having the above-described configuration will be described with reference to FIGS. 2 to 3.

2 is a diagram illustrating a process of converting an NPN-type signal into a PNP-type signal by a signal conversion apparatus according to an embodiment of the present invention.

As shown in FIG. 2, the first to third switches 122, 124, 126 of the switching unit 120 convert signals according to the user's slide operation of the first to third switches 122, 124, and 126. It is connected to the unit 140 and outputs a first signal. At this time, the light-emitting element 190 emits light according to the input state of the first signal input to the first connector 100 (in the case of normal input).

The signal conversion unit 140 converts each of the first signals output from the first to third switches 122, 124, and 126 into a second signal using a light emitting diode and a transistor, and converts the first to third signals into the second signal. Output to the third header (162, 164, 166). At this time, when the second signal is normally input to the first to third headers 162, 164, and 166, the light emitting element 190 connected to the first to third headers 162, 164, and 166 emits light.

Accordingly, the first to third headers 162, 164, 166 may output the input second signal to the output terminal of the second connector 180.

Meanwhile, the light emitting element 190 connected to the power input terminal to the second connector 180 emits light when power is normally applied to the second connector 180.

3 is a diagram illustrating a process of outputting an NPN-type signal as an NPN-type signal by a signal conversion device according to an embodiment of the present invention.

3, the first to third switches 122, 124, 126 of the switching unit 120 according to the user's slide operation of the first to third switches 122, 124, 126 It may be connected to the connector 180.

Accordingly, the first to third switches 122, 124, 126 directly output the first signal input from the input terminal of the first connector 100 to the output terminal of the second connector 190.

Meanwhile, a state in which the signal conversion device as described above is manufactured in the form of a circuit board will be described with reference to FIGS. 4 to 5.

4 is a view showing the front of a circuit board in a form in which a signal conversion device according to an embodiment of the present invention is actually manufactured, and FIG. 5 is a circuit board in a form in which the signal conversion device according to an embodiment of the present invention is actually manufactured. It is a view showing the rear surface of.

4 and 5, the signal conversion device includes a first connector 100, a plurality of resistors R1 to R13, and light emitting diodes IN1 to IN3 and OUT1 to corresponding to the plurality of light emitting elements 190. OUT3, POWER), first to third switches 122, 124, 126, signal conversion unit 140, fixing holes 200 for fixing to other devices (not shown), load current in the circuit board It may be configured with a fuse 210 or the like for blocking overcurrent in order to conduct electricity.

The first signal and voltage input through the first connector 100 may be applied to the first to third switches 122, 124, and 126 through resistors R2 to R4 and light emitting diodes IN1 to IN3. . That is, as the first signal is applied to one end of each of the light emitting diodes IN1 to IN3, and a voltage is applied to the other end through the resistors R2 to R4, the light emitting diodes IN1 to IN3 emit light to input the first signal. It can tell you the status.

In addition, the first to third switches 122, 124, and 126 may receive a voltage and a first signal through resistors R11 to R13 and output them to the signal converter 140. That is, each light emitting diode of the signal conversion unit 140 is applied with a voltage through the resistors R8 to R10 at one end, and the first signal output from the first to third switches 122, 124, 126 to the other end Can be input.

Accordingly, the signal converter 140 may output a second signal through a transistor connected to each light emitting diode.

The second signal may be output to one end of the first to third headers 162, 164, 166 of the connector 160. That is, the first to third headers 162, 164, and 166 receive a second signal at one end, and after receiving a voltage through the resistors R5 to R7 connected to the other end, the second signal is transmitted to the second connector 180 ) Can be output to the output terminal. In this case, the light emitting diodes OUT1 to OUT3 may be connected to the resistors R5 to R7 according to an input state of a voltage.

Meanwhile, the voltage may be output through the resistor R1 connected to the voltage terminal of the second connector 180. A light emitting diode POWER, which operates according to an output state of a voltage, may be connected in series to the resistor R1.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains, various modifications and variations can be made without departing from the essential characteristics of the present invention. Therefore, the embodiments expressed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed by the following claims, and all technical ideas equivalent to or within the scope should be construed as being included in the scope of the present invention.

100: first connector
120: switching unit
140: signal conversion unit
160: connection
180: second connector
190: light-emitting element
200: fixing hole
210: fuse

Claims (5)

As the NPN-type sensor is connected, the first connector 100 outputs an NPN-type signal and voltage, and
A signal conversion unit 140 that operates based on a voltage output through the first connector 100, receives the NPN-type signal, converts it into a PNP-type signal, and outputs it,
A second connector 180 for outputting a PNP-type signal and voltage output through the signal conversion unit 140 through an output terminal and a voltage terminal,
A light-emitting unit comprising at least one light-emitting element 190 that emits light according to an input state of the NPN-type signal and a light-emitting element 190 that emits light according to a state in which a voltage is input through the second connector 180,
Switching operation according to the user's operation to connect the first connector 100 to the signal conversion unit 140 to output the NPN-type signal to the signal conversion unit 140, or the first connector 100 2 It further comprises a switching unit 120 connected to the connector 180 to output the NPN-type signal to the output terminal of the second connector 180,
Further comprising a connection unit 160 connected to the signal conversion unit 140 to receive the PNP-type signal and output it to the second connector 180,
The light emitting unit further includes a light emitting device 190 connected to the input terminal of the connection unit 160 and emitting light according to a state of a voltage applied to the connection unit 160,
Further comprising a fuse 210 for preventing overcurrent from flowing, and a fixing hole 200 for fixing the signal conversion device to an arbitrary device.
Signal conversion device.
delete The method of claim 1,
The switching unit 120,
Each of the NPN-type signals and voltages output through the first connector 100 is inputted through a resistance, and outputs each of the NPN-type signals to the signal conversion unit 140 according to a user's switching operation, or the Consisting of first to third switches for directly outputting each of the NPN-type signals to the second connector 180
Signal conversion device.
delete delete

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