KR101100293B1 - Output control system using hold control circiut and output control method using the same - Google Patents

Abstract

The present invention relates to an output control system using a hold control circuit and an output control method using the same. The present invention includes a microcomputer (U1) (100) including a first port (P0) 110, a second port (P1) 130, a third port (P2) (150); The power supply 600, the resistor (R.R1) 630 and the capacitor (R.C1) 650 are connected in series, and the resistor (R.R1) 630 and the capacitor (R.C1) 650 are connected in series. A power-on reset unit 600 having a structure in which a reset terminal 140 is connected between the power-on reset unit 600; And a first transistor A. Q1 310 having a base connected in series with the second port P1 130, and a transistor B. Q1 having a base connected in series with the port P2. A hold control circuit 300; In the output control method using an output control system comprising a, the microcomputer (U1) (100) is powered by a power on reset unit (POWER ON RESET) 600, the capacitor (R.C1) (650) When the voltage of 0 V is reset to the reset terminal 140, the outputs of the ports P0, P1, and P2 110, 130, and 150 are turned off. The microcomputer U1 100 initializes the ports P0, P1, and P2 110, 130, and 150 to turn off the motor 500. When the state of the hold control circuit is set to the hold state, the microcomputer U1 100 has a low value in the second port P1 130 and a third port P2. When the high value HIGH is applied to 150 and the state of the hold control circuit is set to the control state, the high value HIGH and the third value are applied to the second port P1 130. A low value LOW is applied to the port P2 150.

Hold, Control, Output

Description

Output control system using hold control circuit and output control method using same {Output control system using hold control circiut and output control method using the same}

The present invention relates to an output control technology, and more particularly, to an output control system using a hold control circuit for reducing component damage due to a malfunction and an output control method using the same.

In general, the motor drive control circuit is configured in various ways depending on the purpose of the motor. Thanks to the radical development of semiconductor devices, motor driving drivers are also integrated ICs and are commercially available.

However, most of the motor driving drivers are made to be suitable for the purpose of driving small-capacity motors, and thus, they are difficult to apply for the drive control of large power motors, for example, motors of 1 to 2 kW or more. In particular, in the case of a large power motor, since the damage of the device due to the malfunction is large, the provision of a protection device for preventing the occurrence of malfunction is particularly required.

On the other hand, the general motor driving apparatus is turned on in accordance with the pulse width modulation signal of the motor control unit 1 and the motor control unit 1 for generating a pulse width modulation signal for controlling the rotation of the motor, as shown in FIG. And a motor driver 5 which switches to the on / off state and supplies power supplied from the outside to the motor 3 so as to flow a current of the motor 3. The motor driver 5 is usually provided with four transistors TR1-TR4. When the motor 3 rotates forward, the transistors TR1 and TR4 are switched on according to the pulse width modulation signal supplied from the motor controller 1 so that power supplied from the outside is supplied to the motor 3. The current flowing in the motor 3 is supplied to ground.

In addition, when the motor 3 rotates in reverse, the transistors TR2 and TR3 are switched on according to the pulse width modulation signal supplied from the motor controller 1 so that power supplied from the outside is supplied to the motor 3. Is supplied, and a current flowing in the motor 3 is supplied to ground.

At this time, when the four transistors TR1 to TR4 are all turned on due to a malfunction of the motor controller 1, the transistors including the motor are damaged due to a short between the power supplied from the outside and the ground. There is a problem in the prior art.

In addition, security devices such as DOOR ROCK have recently been proliferating. These electronic stabilizers are improving security by increasing the encryption level. However, these systems sometimes malfunction when exposed to unstable hardware such as electromagnetic shock. In addition, dynamic instruments such as motors can have fatal consequences if the system malfunctions. In addition, there is a possibility that a user may make a mistake if a malfunction occurs in the system for monitoring data.

In order to prevent such hazards, the present invention implements a circuit as follows to prevent the system from operating in an uncontrolled state. Accordingly, there is a demand in the art for technology development to more accurately control the output to the system.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide an output control system using a hold control circuit and an output control method using the same.

According to an embodiment of the present invention, an object of the present invention is to provide an output control system using a hold control circuit suitable for driving control of an actuator such as a motor and an output control method using the same.

In addition, according to an embodiment of the present invention, an object of the present invention is to provide an output control system using a hold control circuit and an output control method using the same so that the output control system operates only in a known state.

In addition, according to an embodiment of the present invention, an object of the present invention is to provide an output control system using a hold control circuit that can control the motor only in the control state of the hold state and the control state and an output control method using the same.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

The output control system using the hold control circuit according to the present invention, the microcomputer (U1) including a first port (P0) 110, a second port (P1) 130, a third port (P2) 150. 100; The power supply 600, the resistor (R.R1) 630 and the capacitor (R.C1) 650 are connected in series, and the resistor (R.R1) 630 and the capacitor (R.C1) 650 are connected in series. A power-on reset unit 600 having a structure in which a reset terminal 140 is connected between the power-on reset unit 600; And a first transistor (A.Q1) 310 having a base connected in series with the second port (P1) 130, and a second transistor having a base connected in series with the second port (P1) 130. A hold control circuit 300 comprising (B.Q1) 330; In the output control system including, the microcomputer (U1) (100), the power is supplied to the power on reset (POWER ON RESET) 600, the voltage of the capacitor (R.C1) (650) is When the reset terminal 140 is reset to 0V, the outputs of the first, second, and third ports P0, P1, and P2 110, 130, and 150 are turned off. The first, second, third ports (P0, P1, P2) (110, 130, 150) are initialized to turn off the motor 500, and the hold control circuit 300 is set to the hold state. In this case, a low value may be applied to the second port P1 130 and a high value may be applied to the third port P2 150.

When the microcomputer U1 applies a low value to the second port P1 130, the first transistor A.Q1 310, which is a PNP transistor, is turned on. The base voltage of the third transistor (Q1) 200 becomes 0V, and the collector and emitter of the third transistor (Q1) 200 are short-circuited to operate the motor 500. When a high value is applied to the third port P2 150, the second transistor B. Q1 330, which is an NPN transistor, is turned on and the third transistor is turned on. The base voltage of the Q1 200 is maintained at 0 V, so that the third transistor Q1 200 does not react to the output of the second port P1 130 and is off. State can be maintained.

The microcomputer (U1) 100, when the hold control circuit 300 is set to the control state (CONTROL STATE), the high value (HIGH) to the second port (P1) 130, the third port ( A low value LOW may be applied to P2) 150.

When the microcomputer U1 100 applies the high value HIGH to the second port P1 130, the first transistor A.Q1 310 is turned off. When the microcomputer (U1) 100 applies a low value (LOW) to the third port (P2) 150, the second transistor (B. Q1) 330 is turned off (OFF), By controlling the third transistor Q1 200 in a manner of transmitting a low value or a high value signal to the first port P0 110 to turn on or off the operation of the motor. It can be characterized.

The output control method using the output control system according to the present invention, the microcomputer (U1) including a first port (P0) 110, a second port (P1) 130, a third port (P2) 150. 100; The power source 600, the resistor (R.R1) 630 and the capacitor (R.C1) 650 are connected in series, and the resistor (R.R1) 630 and the capacitor (R.C1) 650 are connected in series. A power-on reset unit 600 having a structure in which a reset terminal 140 is connected between the power-on reset unit 600; And a first transistor A. Q1 310 having a base connected in series with the second port P1 130, and a transistor B. Q1 having a base connected in series with the port P2. A hold control circuit 300; In the output control method using an output control system comprising a, the microcomputer (U1) (100) is powered by a power on reset unit (POWER ON RESET) 600, the capacitor (R.C1) (650) When the voltage of 0 V becomes reset to the reset terminal 140, the first output of turning off the outputs of the ports P0, P1, and P2 110, 130, and 150 is performed. step; The microcomputer (U1) 100 is a second step of initializing the ports (P0, P1, P2) (110, 130, 150) to turn off the motor (500); When the state of the hold control circuit is set to the hold state, the microcomputer U1 100 has a low value in the second port P1 130, and the third port P2. Is applied to the second port P1 130 when the state of the hold control circuit is set to the control state. A low value LOW may be applied to the three ports P2 and 150.

In the third step, when the microcomputer U1 100 applies the low value to the second port P1 130 in the hold state, the first transistor A is a PNP transistor. Q1) 310 is turned on, the base voltage of the transistor Q1 becomes 0V, and the collector and emitter of the transistor Q1 are short-circuited to form the motor 500. When the microcomputer (U1) 100 applies a high value to the third port (P2) 150, the second transistor (B. Q1) 330 which is an NPN transistor Is turned on, and the base voltage of the third transistor (Q1) 200 is maintained at 0 V, so that the third transistor (Q1) 200 is output with respect to the output of the port (P1) 310. ) Does not react and maintains an off state, and when the microcomputer U1 100 applies the high value to the second port P1 130 in the control state, The first transistor AQ 1) 310 is turned off, and when the microcomputer U1 100 applies a low value to the ports P2 and 330, the second transistor B. Q1 ( 330 is turned off to control the third transistor Q1 200 to transmit a low value or a high value signal to the first port P0. The operation can be turned on or off.

The output control system using the hold control circuit and the output control method using the same according to the present invention are suitable for driving control of an actuator such as a motor, thereby providing an effect of reducing component damage due to operation.

In addition, the present invention provides the effect of allowing the output control system to operate only in a known state at all times.

In addition, the present invention provides the effect that the output control system can control the motor only in the control state of the hold state and the control state by using the hold control circuit.

Hereinafter, a detailed description of a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted when it is deemed that they may unnecessarily obscure the subject matter of the present invention.

In the present specification, when one component 'transmits' data or a signal to another component, any one component may directly transmit data or a signal to another component, and at least one other component. This means that data or a signal can be transmitted to other components through the APC.

2 is a circuit diagram illustrating an output control system 1000 using the microcomputer U1 100 except for the power on reset unit 600 and the hold control circuit 300 according to an exemplary embodiment of the present invention. 3 is a circuit diagram illustrating an output control system 1000 using a power on reset unit 600 and a hold control circuit 300 according to an exemplary embodiment of the present invention. 2 and 3, the output control system 1000 using the power on reset unit 600 and the hold control circuit 300 includes a microcomputer U1 and a third transistor Q1 and 200. And a hold control circuit 300, a power supply unit 400, a motor 500, and a power on reset unit 600.

The microcomputer U1 100 includes a first port P0 110, a second port P1 130, a third port P2 150, and controls the output control system 1000 as a whole. do.

The first port P0 110 is connected in series with the resistor R1 170, and the resistor R1 is connected to the base of the third transistor Q1 200. The second port P1 130 is connected in series with the resistor A.R1, and the resistor A.R1 is connected to the base of the first transistor A.Q1 310. The third port P2 150 is connected in series with the resistor B.R1, and the resistor A.R1 is formed in a structure connected to the base of the second transistor B.Q1 330.

The third transistor Q1 200 is an NPN transistor, in which a collector is connected to a motor 500 and an emitter is connected to a ground terminal.

The hold control circuit 300 includes a resistor A.R1 connected in series with the second port P1 130 and a first transistor A.Q1 310 having a base connected to the resistor A.R1. ), A resistor (B.R1) connected in series with the third port (P2) 150, and a second transistor (B.Q1) 330 having a base connected to the resistor (A.R1).

The power supply unit 400 supplies power to the motor 500, and the motor 500 performs a rotational motion by the power supply 500.

The power on reset unit 600 may include a power supply 600, a resistor (R.R1) 630, and a capacitor (R.C1) 650 connected in series, and a resistor (R.R1). The reset terminal 140 is connected in parallel between the 630 and the capacitor R. C1 650.

The following will focus on the operation. First, as shown in FIG. 2, except for the power-on reset unit 600 and the hold control circuit 300, a typical output control system 1000 using a typical microcomputer U1 100 is used.

When the high value is output from the first port P0 110 of the microcomputer U1 100, the third transistor Q1 200 is turned on. More specifically, the collector and the emitter of the third transistor Q1 200 are energized so that a current path is supplied so that the current supplied from the power supply unit 400 may drive the motor 500. To form.

In addition, when the microcomputer U1 100 outputs a low value from the first port P0 110, the third transistor Q1 200 is turned off. More specifically, since the collector and emitter of the third transistor Q1 200 are short-circuited, the current supplied from the power supply unit 400 cannot drive the motor 500. 500 stops.

As described above, the microcomputer 100 (U1) may control the motor 500 by driving the third transistor Q1 200 using the first port P0 110.

However, the motor 500 may cause a dangerous situation if we operate in an undesired condition.

This situation typically occurs from the time the system is powered up until the time it stabilizes. In order to overcome this problem, a power on reset unit 600 is generally added. When the power supply 610 is applied, the voltage of the capacitor (R.C1) 650 becomes 0V, and when the reset terminal 140 is reset, all outputs are turned off. In addition, when the power supply 610 is turned off, the power on reset unit 600 operates to turn off all outputs.

However, each of the first, second, and third ports P0, P1, and P2 110, 130, and 150 becomes a high state during a reset, but is controlled by the output control system 1000. You are in an unstable situation.

order One 2 3 4 5 6 7 System operation Power supply System reset Port settings Port control Power off System reset Power supply 0V Port status Initialization state
(Not controlled) Initialization state
(Not controlled) Known State Known State Known State Initialization state
(Not controlled) Known state off

When the power supply 610 is applied to the output control system 1000 and starts to operate as described above, the system operates until the first, second, and third ports P0, P1, and P2 110, 130, and 150 are set. 1, 2, 3 ports (P0, P1, P2) (110, 130, 150) is in an unstable state that is out of control.

On the other hand, unlike the above example, if the output control system 1000 is damaged for any reason, the system can control the input and output to the first, second, third port (P0, P1, P2) (110, 130, 150) There is no situation. At this time, the state of each of the first, second, and third port (P0, P1, P2) (110, 130, 150) is not known what state.

Therefore, the power on reset unit 600 cannot cope with an unexpected situation. Therefore, to improve this problem, it is intended to add a hold control circuit 300 to allow the system to operate only in a known state at all times.

When the low value Low is applied to the second port P1 130, the first transistor A. Q1 310 is turned on because it is a PNP transistor. At this time, as the first transistor A. Q1 310 is turned on, the base voltage of the third transistor Q1 200 is maintained at 0V.

When the base voltage of the third transistor (Q1) 200 becomes 0V, the collector and emitter of the third transistor (Q1) 200 are short-circuited so that the motor 500 cannot be operated. do. This is called a hold state.

On the other hand, when the high value High is applied to the third port P2 150, the second transistor B. Q1 330 is turned on because it is an NPN transistor. When the second transistor (B. Q1) 330 is turned on, the base voltage of the third transistor (Q1) 200 is maintained at 0 V, thereby preventing the second port (P1) 130. The third transistor Q1 200 does not react to the output and remains off.

Accordingly, when the low value Low is set at the second port P1 130 or the high value HIGH is set at the third port P2 150, the hold state is HOLD STATE.

On the contrary, when a high value is applied to the second port P1 130, the first transistor A. Q1 310 is turned off and the third port P2 150 is turned off. When the low value Low is applied, the second transistor B. Q1 330 is turned OFF.

As such, when the first transistor (A.Q1) 310 and the second transistor (B.Q1) 330 are turned off, the signal is transmitted to the first port (P0) 110. Normally, the third transistor (Q1) 200 may be controlled to turn on / off an actuator (a motor 500, an indicator (not shown), etc.). Such a state is called a control state.

By using these two hold states and control states, the state of the system can be protected from abnormal operation.

On the other hand, the resistor (R1) 170 in the figure is to protect the overcurrent due to the potential difference in the state that the output of the first port (P0) 110 enters the hold state by the control circuit 300 It is a resistance for.

4 is a flowchart illustrating an output control method using the output control system 1000 according to an exemplary embodiment. 1 to 4, the microcomputer U1 100 is supplied with a power supply 610 to a power on reset unit 600 so that the voltage of the capacitor R.C1 650 is 0V. When the reset terminal 140 is reset, all outputs are turned off (S1).

Accordingly, the microcomputer U1 100 initializes the first, second, third ports P0, P1, and P2 110, 130, and 150 (S3). Meanwhile, each of the first, second and third ports P0, P1, and P2 110, 130, and 150 becomes a high state during a reset, but the system becomes unstable in a short time due to a high state. Will be placed in. More specifically, when the output control system 1000 is initialized in an environment such as a power reset, each of the first, second and third ports P0, P1, and P2 110, 130, and 150 may have a high impedance. It becomes the state.

After step S5, upon initialization, the motor 500 is turned off (S5). That is, the microcomputer U1 100 initializes the first, second and third ports P0, P1, and P2 110, 130, and 150 by using a power on reset unit 600. The motor 500 is turned off.

The microcomputer U1 100 determines whether it is set to a hold state (S7).

If the determination result of the step (S7) is set to the hold state (HOLD STATE), the microcomputer (U1) (100) is a low value to the second port (P1) 130, the third port (P2) (150) A high value is applied to the signal (S9).

That is, when the low value Low is applied to the second port P1 130, the second transistor A. Q1 330 is turned on because it is a PNP transistor. At this time, as the first transistor A. Q1 310 is turned on, the base voltage of the third transistor Q1 200 is maintained at 0V. When the base voltage of the third transistor (Q1) 200 becomes 0V, the collector and emitter of the third transistor (Q1) 200 are short-circuited so that the motor 500 cannot be operated. do. This is called a hold state.

On the other hand, when the high value High is applied to the third port P2 150, the second transistor B. Q1 330 is turned on because it is an NPN transistor. When the second transistor (B. Q1) 330 is turned on, the base voltage of the third transistor (Q1) 200 is maintained at 0 V, thereby preventing the second port (P1) 130. The third transistor Q1 200 does not react to the output and remains off. Therefore, when the low value (Low) to the port (P1) (310) or the high value (HIGH) to the third port (P2) 150 in this way is a hold state (HOLD STATE).

As a result of the determination in step S7, when it is set to the control state (that is, when the motor 500 is to be driven), the microcomputer U1 100 receives the high value (the second port P1) 130. HIGH) and a low value LOW is applied to the third port P2 150 (S11).

That is, when the high value (High) is applied to the second port (P1) 130, the first transistor (A. Q1) 310 is turned off (OFF), the third port (P2) 150 When the low value Low is applied, the second transistor B. Q1 330 is turned OFF. As such, when the first transistor (A.Q1) 310 and the second transistor (B.Q1) 330 are turned off, the signal is transmitted to the first port (P0) 110. Normally, the third transistor (Q1) 200 may be controlled to turn on / off an actuator (a motor 500, an indicator (not shown), etc.). Such a state is called a control state. By using these two hold states and control states, the state of the system can be protected from abnormal operation.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. Computer-readable recording media include all kinds of recording devices that store data that can be read by a computer system. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (eg, transmission over the Internet). It also includes.

The computer readable recording medium can also be injected onto a networked computer system so that the computer readable code is stored and executed in a distributed fashion. And functional programs, codes and code segments for implementing the present invention can be easily inferred by programmers in the art to which the present invention belongs.

Although the contents of the present invention have been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art may realize various modifications and other equivalent embodiments therefrom. I will understand. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

The output control system using the hold control circuit and the output control method using the same of the present invention are suitable for driving control of an actuator such as a motor, thereby reducing component damage due to the operation, and allowing the output control system to operate only in a known state at all times. In addition, the motor can be controlled only in the control state of the hold state and the control state using the hold control circuit, thereby providing a technology to compensate for the disadvantages of the existing technology.

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings cited in the detailed description of the invention, a brief description of each drawing is provided.

1 is a view showing the configuration of a motor drive device which is one of the general output control system.

2 is a circuit diagram illustrating an output control system using a microcomputer U1 except for a hold control circuit according to an exemplary embodiment of the present invention.

3 is a circuit diagram illustrating an output control system using a hold control circuit according to an exemplary embodiment of the present invention.

4 is a flowchart illustrating an output control method using an output control system according to an exemplary embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100: microcomputer (U1) 110: first port (P0)

130: second port P1 150: third port P2

170: resistor R1 200: third transistor Q1
300: hold control circuit 310: first transistor (A.Q1)
330: first transistor B. Q1 400: power supply unit

delete

500: motor 600: power on reset unit (POWER ON RESET)

Claims (6)

A microcomputer (U1) 100 including a first port (P0) 110, a second port (P1) 130, and a third port (P2) 150; The power supply 600, the resistor (R.R1) 630 and the capacitor (R.C1) 650 are connected in series, and the resistor (R.R1) 630 and the capacitor (R.C1) 650 are connected in series. A power-on reset unit 600 to which a reset terminal 140 is connected in parallel; A first transistor (A.Q1) 310 having a base connected in series with the second port (P1) 130 and a second transistor having a base connected in series with the third port (P2) 150 ( A hold control circuit 300 comprising B. Q1) 330; And a third transistor (Q1) 200 having a base connected in series with the first port (P0) 110 of the microcomputer (U1) (100). The microcomputer U1 100 is supplied with power to the power on reset unit 600 so that the voltage of the capacitor R.C1 650 becomes 0V so that a reset terminal ( When RESET is applied to 140, the outputs of the first, second, third and second ports P0, P1, and P2 110, 130, and 150 are turned off. When the motor 500 is turned off by initializing (P0, P1, P2) (110, 130, 150), and the hold control circuit 300 is set to the hold state, the second port (P1) And a high value (HIGH) to the third port (P2) (150) and a low value (130) to (130). The method of claim 1, wherein the microcomputer (U1) 100, When the low value Low is applied to the second port P1 130, the first transistor A. Q1 310, which is a PNP transistor, is turned on and the third transistor Q1 (200). ), The base voltage is 0V, and the collector and emitter of the third transistor Q1 200 are short-circuited to operate the motor 500. When a high value is applied to the third port P2 150, the second transistor B. Q1 330, which is an NPN transistor, is turned on and the third transistor Q1 ( The base voltage of the 200 is maintained at 0 V, so that the third transistor Q1 200 does not react to the output of the second port P1 130 and remains off. Output control system using a hold control circuit, characterized in that. The method of claim 1, wherein the microcomputer (U1) 100, When the hold control circuit 300 is set to a control state, a high value is set at the second port P1 130 and a low value is set at the third port P2 150. Output control system using a hold control circuit, characterized in that for applying. The method of claim 3, wherein the microcomputer (U1) 100, When the high value HIGH is applied to the second port P1 130, the first transistor A. Q1 310 is turned OFF. When the microcomputer U1 100 applies the low value LOW to the third port P2 150, the second transistor B. Q1 330 is turned off. By controlling the third transistor Q1 200 in a manner of transmitting a low value or a high value signal to the first port P0 110, the operation of the motor is turned on or off. Output control system using a hold control circuit, characterized in that. A microcomputer (U1) 100 including a first port (P0) 110, a second port (P1) 130, and a third port (P2) 150; The power supply 600, the resistor (R.R1) 630 and the capacitor (R.C1) 650 are connected in series, and the resistor (R.R1) 630 and the capacitor (R.C1) 650 are connected in series. A power-on reset unit 600 to which a reset terminal 140 is connected in parallel; A first transistor (A.Q1) 310 having a base connected in series with the second port (P1) 130 and a second transistor having a base connected in series with the third port (P2) 150 ( A hold control circuit 300 comprising B. Q1) 330; And a third transistor (Q1) 200 having a base connected in series with the first port (P0) 110 of the microcomputer (U1) (100). The microcomputer U1 100 is supplied with a power on reset unit 600 so that the voltage of the capacitor R.C1 650 becomes 0V so that the reset terminal 140 A first step of turning off the outputs of the first, second, and third ports (P0, P1, P2) (110, 130, 150) when reset occurs; The second microcomputer (U1) 100 is a second step of initializing the first, second, third ports (P0, P1, P2) (110, 130, 150) to turn off the motor (500); And When the state of the hold control circuit is set to the hold state, the microcomputer U1 100 has a low value in the second port P1 130 and a third port P2. When the high value HIGH is applied to 150 and the state of the hold control circuit is set to the control state, the high value HIGH and the third value are applied to the second port P1 130. And a third step of applying a low value to the port (P2) (150). The method of claim 5, wherein the third step, When the microcomputer U1 100 is in the hold state, when the low value Low is applied to the second port P1 130, the first transistor A.Q1 310 which is a PNP transistor is applied. ) Is turned on, the base voltage of the third transistor (Q1) 200 becomes 0V, and the collector and emitter of the first transistor (A.Q1) 310 are short-circuited. When the motor 500 is not operated and the microcomputer U1 100 applies a high value to the third port P2 150, the second transistor B, which is an NPN transistor, is applied. Q1) 330 is turned on, and maintains the base voltage of the third transistor (Q1) 200 at 0V, and the output of the second port (P1) 130 The third transistor Q1 200 does not react and remains in an off state. When the microcomputer U1 100 is in the control state, when the high value HIGH is applied to the second port P1 130, the first transistor A.Q1 310 is turned off. When the microcomputer U1 100 applies the low value LOW to the third port P2 150, the second transistor B. Q1 330 is turned off. OFF to control the third transistor Q1 200 in a manner of transmitting a low value or a high value signal to the first port P0 110 to control the operation of the motor. Output control method using an output control system, characterized in that on or off.

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