KR0118924Y1 - Interface circuit in the pager and handler - Google Patents

Abstract

The present invention is connected to the handler processor output terminal of the handler unit and forms an interface output stage that is turned on when the photocoupler is active high and a grounded diode of one side which provides an active low output as the interface output when the photocoupler is turned on, The coupler includes a handler interface for receiving power in parallel; A photocoupler that is connected to the processor output stage of the laser section and is active high and has a phototransistor already grounded, and provides an active low output as an interface output when the photocoupler is turned on and forms an interface output. Provides power to the photocoupler of the photocoupler. The photocoupler is the interface circuit of the laser and the handler, which is composed of a laser interface unit connected in parallel with the ground, and facilitates interfacing between equipments of different signal systems.

Description

Interface circuit of laser and handler

1 is a conventional laser and handler configuration,

2 is a laser and handler configuration using the interface of the present invention,

3 is a handler interface circuit diagram of the present invention,

(b) is a laser interface circuit diagram of the present invention.

* Explanation of symbols for the main parts of the drawings

10: handler section 11: handler processor

12: handler interface 20: laser unit

21 processor 22 laser interface unit

U1 to U10, U11 to U14: Photocoupler

L1 to L10: handler part diode

H1 to H4: mirror part diode

Vcc: Power GND: Ground

The present invention relates to an interface circuit between a device and a device (for example, a laser and a handler), and relates to an interface circuit in which a drive signal level changes different drive levels between active high and active low.

Conventionally, the electrical interface has a disadvantage in that a large cost is spent for a long time by making a connection to a universal board or performing a modified main system in a different signal system.

The present invention is to solve this problem, it is characterized by providing an interface for converting the signal system of different equipment driven differently to the active low and high.

That is, the present invention is to interface the processor outputs of the different signal signal system equipment of the handler unit and the laser unit, the handler unit photocoupler connected to the handler processor output terminal of the handler unit and turned on when the active high is active, and the interface unit outputs the handler unit photo. A handler part diode having one side grounded to provide an active low output to the interface output when the coupler is turned on, and the handler part photocoupler includes a handler interface part configured to receive power in parallel; A laser photocoupler connected to the processor output stage of the laser section and active high to on and the phototransistor is emitter-grounded, and an interface output stage to provide an active low output as an interface output when the laser photocoupler is turned on. The laser diode provided to the phototransistor of the coupler forms a group, and the laser photocoupler is composed of a laser interface connected to ground in parallel.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings of FIG. 3.

The present invention is to interface with the processor outputs of the different signal signal system equipment of the handler section and the laser section, connected to the output of the handler processor 11 of the handler section 10 and turned on when active high and the handler section photocouplers U1 to U10. ) And the handler part diodes L1 to L10 having one side grounded to provide an active low output to the interface output when the handler part photocouplers U1 to U10 are turned on. U1 to U10 include a handler interface unit 12 adapted to receive a power supply VCC in parallel; Laser unit photocouplers U11 to U14 connected to an output terminal of the processor unit 21 of the laser unit 20, active high one on, and phototransistors are emitter grounded, and the laser unit photocouplers U11 to U14 forming an interface output terminal. When turned on, the laser diodes (H1 to H4) that provide the power supply (Vcc) to the phototransistors of the laser photocouplers (U11 to U14) to provide an active low output as an interface output are formed in a laser beam photocoupler (U11). U14 is a laser and handler interface circuit comprising a laser interface 22 connected to ground GND in parallel.

The interface units 12 and 22 are configured to interface between the processors 10 and 21 of the handler unit 10 and the laser unit 20 as shown in FIG. 2. The unit 10 is illustrated with four output stages (10 of H01 to H10) and four output stages of the laser unit 20.

According to the present invention configured as described above, when the processor 11 output terminal (eg, H / 01) of the handler unit 10 receives the active low signal, the power supply Vcc turns on the photocoupler U1, and accordingly, The power supply Vcc is provided to the diode L1 and an active high signal is provided to the input terminal L / 11 of the processor 21 of the laser unit 20. The remaining output stages H / 02 ... H / 10 operate on the same principle, and thus description thereof is omitted.

On the other hand, as shown in FIG. 3 (b), when an active high signal is applied from the processor 21 output (eg, L / 01) of the laser unit 20, the photocoupler U11 is turned on. Then, since the diode H1 applied to the collector of the emitter ground phototransistor of the photocoupler U11 is supplied with the power supply Vcc, the diode H1 is turned on, so the actuated state is applied to the input terminal H / 11 of the interface 11 of the hander unit 10. Is provided.

On the contrary, when the output of the processor 21 (L / 01) is active low, the photocoupler U11 is turned off, so the voltage Vcc through the diode H1 remains active high and the input terminal of the interface 11 of the handler unit 10 ( H / 11).

As described above, the present invention adds a handler and a laser interface unit between the handler unit and the laser unit, and each interface unit easily converts active low to active high or active high to active low to facilitate interfacing between devices of different signaling systems. do.

Claims (1)

In interfacing the processor outputs of the different signal signaling system equipment of the handler section and the laser section, the handler section photocoupler which is connected to the handler processor output stage of the handler section and is turned on when it is active high, and is active when the handler section photocoupler is turned on and forms an interface output stage. A handler part diode grounded on one side to provide a low output to the interface output, and the handler part photocoupler includes a handler interface part configured to receive power in parallel; A laser photocoupler connected to the processor output stage of the laser section and turned on when active high and the phototransistor is emitter-grounded, and an interface output stage to provide an active low output as an interface output when the laser photocoupler is turned on. Laser part diodes provided to the port transistor of the coupler, the laser part photocoupler is composed of a laser interface part connected to the ground in parallel, the laser and handler interface circuit.