KR20210094746A - Method and apparatus for fault detection and error compensation in microcomputer - Google Patents

Abstract

According to an embodiment of the present specification, a control method of a microcomputer comprises the following steps of: receiving an input value of a first terminal connected to a feedback terminal of a power supply; receiving an input value of a second terminal connected to a regulator output; and outputting a control signal according to an input value of a third terminal receiving an analog input value based on the input value of the first terminal and the input value of the second terminal. According to the embodiment of the present specification, the microcomputer can quickly identify a failure of an ADC and prevent malfunction by checking the failure of the ADC and performing an operation corresponding thereto.

Description

Method and apparatus for fault detection and error correction in microcomputer {Method and apparatus for fault detection and error compensation in microcomputer}

An embodiment of the present specification relates to a method and apparatus for detecting a failure in a microcomputer. More particularly, it relates to a method and apparatus for detecting a failure and compensating for an error of an analog-to-digital converter (ADC) in a microcomputer.

As the use of small electronic devices is expanded, the use of microcomputers for performing measurements and calculations inside the electronic devices has become popular. The microcomputer is connected to other devices, such as sensors, to check the measured value, and to perform an operation based on the measured value and programmed information, thereby enabling the user to perform the desired action.

The microcomputer may include an ADC that converts a measured analog value, such as a voltage, into a digital value and senses it together with an arithmetic unit for control. There are several methods to implement ADC, such as Single Slope, Flash type, SAR, and Sigma Delta. You can check the measured values.

Meanwhile, in the case of a microcomputer installed in the small electronic device as described above, the size and configuration may be limited due to problems such as size and cost. More specifically, in the case of a small electronic device, the size of the microcomputer needs to be smaller and the number of information required to be measured is not large, so the small microcomputer is installed, and the configuration of the microcomputer can also be simplified.

In the case of such a small microcomputer, components included are also limited, and the number of ADCs for the microcomputer to measure external information may also be limited. If the number of ADCs installed in the microcomputer is one and the ADC fails, the microcomputer cannot properly check the measured values, so the possibility of malfunction increases. In addition, in the case of ADC, the value is converted into a digital value based on the ratio of the measured voltage value to the supplied power voltage value. If the power voltage value is not a preset value, an error occurs in the converted digital value, and the An error may also occur in the operation of the electronic device by erroneously sensing the measured value according to the error.

In this regard, Korean Patent Publication No. 10-1826645 discloses a method and an apparatus for determining whether an ADC in a battery management system is faulty. Looking at the invention of the above publication, a separate sensing IC configuration is required to determine whether the ADC has failed, and the characteristic of determining whether the ADC has failed based on each voltage value measured by the sensing IC is disclosed. A specific method for detecting an abnormality in the ADC in the absence of a sensing IC has not been disclosed, and a method for correcting an error of the ADC has not been disclosed either.

As such, a method for detecting a failure of an ADC in a microcomputer installed in an electronic device and compensating for an error is required.

An embodiment of the present specification has been proposed to solve the above-described problem, and an object of the present specification is to provide a method for detecting a failure of an ADC in a microcomputer associated with the ADC and a circuit therefor. Another object of the present specification is to provide a method for checking and correcting an ADC-related output error in a microcomputer, and an apparatus using the same. In addition, an embodiment of the present specification provides a method for determining whether an ADC has failed based on a value measured through the ADC in a state where a configuration for detecting a separate failure is not provided, and correcting an error related to the ADC, and an apparatus using the same intended to provide

In order to achieve the above object, a control method of a microcomputer according to an embodiment of the present specification includes receiving an input value of a first terminal connected to a feedback terminal of a power supply; receiving an input value of a second terminal connected to a regulator output; and outputting a control signal according to an input value of a third terminal receiving an analog input value based on the input value of the first terminal and the input value of the second terminal.

A microcomputer according to another embodiment of the present specification includes a first terminal connected to a feedback terminal of a power supply; a second terminal connected to the regulator output; a third terminal for receiving an analog input value; and a fourth terminal for outputting a control signal related to the input value of the third terminal based on the input value of the first terminal and the input value of the second terminal.

Electric movement device according to another embodiment of the present specification is a display; sensor to detect speed; a power supply including a feedback terminal; a regulator including an output terminal; and a first terminal connected to the feedback terminal, a second terminal connected to the output, and a third terminal connected to the sensor, wherein speed-related information is displayed on the display in response to an input value of the third terminal. and a control unit for displaying, wherein the speed-related information is adjusted based on at least one of the first terminal input value and the second terminal input value.

According to the embodiment of the present specification, the microcomputer can quickly identify the failure of the ADC and prevent the malfunction by checking the failure of the ADC and performing an operation corresponding thereto. According to another embodiment of the present specification, an ADC-related output error can be checked and corrected, so that a measurement value related to the ADC can be more accurately confirmed.

Also, according to an embodiment of the present specification, an operation for detecting a failure of an ADC related to a microcomputer may be performed using only an existing circuit configuration without a separate active circuit. This can be used in an electronic device that does not include a plurality of ADCs and includes a microcomputer having a simple configuration, is simple to implement, and has a low manufacturing cost.

1 is a view showing a perspective view of an electric movement device according to an embodiment.
2 is a view showing a cross-sectional side view of the electric movement device according to an embodiment.
3 is a view for explaining a driving unit of the electric movement device according to an embodiment.
4 is a diagram for explaining a signal for controlling a switch included in an inverter according to an embodiment.
5 is a diagram illustrating a switch control method for performing power generation braking according to an exemplary embodiment.
6 is a view for explaining a control signal input to a pair of switches according to the performance of driving and generating braking of a motor according to an exemplary embodiment.
7 is a diagram illustrating a switch control method according to regenerative braking according to an exemplary embodiment.
8 is a diagram illustrating spare braking according to an exemplary embodiment.
9 is a block diagram related to an electric movement device according to an embodiment.
10 is a power-related circuit diagram of an electronic device according to an embodiment of the present specification.
11 is a circuit diagram related to a microcomputer according to an embodiment of the present specification.
12 is a flowchart illustrating a method of performing an ADC-related operation in a microcomputer according to an embodiment of the present specification.
13 is a flowchart illustrating a method of performing an ADC-related operation in a microcomputer according to another embodiment of the present specification.
14 is a flowchart illustrating a method for controlling driving of a motor in a microcomputer according to an embodiment of the present specification.

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

In describing the embodiments, descriptions of technical contents that are well known in the technical field to which the present invention pertains and are not directly related to the present invention will be omitted. This is to more clearly convey the gist of the present invention by omitting unnecessary description.

For the same reason, some components are exaggerated, omitted, or schematically illustrated in the accompanying drawings. In addition, the size of each component does not fully reflect the actual size. In each figure, the same or corresponding elements are assigned the same reference numerals.

Advantages and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

At this time, it will be understood that each block of the flowchart diagrams and combinations of the flowchart diagrams may be performed by computer program instructions. These computer program instructions may be embodied in a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment, such that the instructions performed by the processor of the computer or other programmable data processing equipment are not described in the flowchart block(s). It creates a means to perform functions. These computer program instructions may also be stored in a computer-usable or computer-readable memory that may direct a computer or other programmable data processing equipment to implement a function in a particular manner, and thus the computer-usable or computer-readable memory. It is also possible that the instructions stored in the flow chart block(s) produce an article of manufacture containing instruction means for performing the function described in the flowchart block(s). The computer program instructions may also be mounted on a computer or other programmable data processing equipment, such that a series of operational steps are performed on the computer or other programmable data processing equipment to create a computer-executed process to create a computer or other programmable data processing equipment. It is also possible that instructions for performing the processing equipment provide steps for performing the functions described in the flowchart block(s).

Additionally, each block may represent a module, segment, or portion of code that includes one or more executable instructions for executing specified logical function(s). It should also be noted that in some alternative implementations it is also possible for the functions recited in blocks to occur out of order. For example, two blocks shown one after another may in fact be performed substantially simultaneously, or it is possible that the blocks are sometimes performed in the reverse order according to the corresponding function.

At this time, the term '~ unit' used in this embodiment means software or hardware components such as FPGA or ASIC, and '~ unit' performs certain roles. However, '-part' is not limited to software or hardware. The '~ unit' may be configured to reside on an addressable storage medium or may be configured to refresh one or more processors. Thus, as an example, '~' denotes components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, and procedures. , subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. The functions provided in the components and '~ units' may be combined into a smaller number of components and '~ units' or further separated into additional components and '~ units'. In addition, components and '~ units' may be implemented to play one or more CPUs in a device or secure multimedia card.

1 is a view showing a perspective view of an electric movement device according to an embodiment.

Referring to FIG. 1 , each component included in the electric movement device is illustrated.

Electric Mobility Apparatus includes a handlebar 101, a display 103, a brake lever 105, a front wheel 107, a real wheel 109 and a body frame. It may include at least one of (111).

The handlebar 101 may be manipulated by a user to change the direction of the electric movement device. In addition, an acceleration input may be received based on the user's manipulation of the handlebar 101 , and the speed of the electric movement device may be adjusted based on the acceleration input. For example, when the user pulls or rotates the handlebar 101 in a specific direction, the electric movement device may be accelerated.

The display 103 may display information related to the electric mobile device. For example, the current speed of the electric mobile device, battery level status, user authentication status, vehicle status, speed limit, power on/off, operation information related to communication module, information related to acceleration torque, information related to deceleration torque, braking Various information, such as information related to charging according to the , may be displayed on the display 103 .

A communication module that can be mounted inside the electric mobile device can transmit and receive data to and from external devices using wired/wireless communication. At this time, the communication technology used by the communication module includes GSM (Global System for Mobile communication), CDMA (Code Division Multi Access), LTE (Long Term Evolution), 5G, WLAN (Wireless LAN), Wi-Fi (Wireless-Fidelity), Bluetooth™, RFID (Radio Frequency Identification), Infrared Data Association (IrDA), ZigBee, NFC (Near Field Communication), and the like. The electric mobile device may communicate with at least one of another electric mobile device, a portable terminal, a base station, an access point (AP), and an infrastructure using a communication module.

As the user operates the brake lever 105 , the speed of the electric movement device may be reduced. The brake lever 105 may be connected to at least one side of both handlebars. For example, a mechanical braking force may be applied to at least one of the front wheel 107 and the rear wheel 109 in response to the manipulation of the brake lever 105 . According to the embodiment, the user controls the brake lever 105 to generate mechanical braking for the front wheel 107, so that the speed of the electric movement device may be reduced. For example, a portion of the front wheel 107 may come into contact with the brake pad according to the manipulation of the brake lever 105 , and a braking force may be generated by friction.

The front wheel 107 mechanically braked by the brake lever 105 is only an example, and the rear wheel 109 may be braked by the brake lever 105 . As another example, electric braking force may be applied to at least one of the front wheel 107 and the rear wheel 109 in response to the manipulation of the brake lever 105 . In the electrical braking, the rotation of the motor may be braked by controlling the inverter when the motor connected to at least one of the front wheel 107 and the rear wheel 109 rotates.

The electrical braking may include at least one of regenerative braking that charges the battery with electrical energy generated according to inverter control, power generation braking that converts the generated electrical energy into thermal energy and consumes it, and spare braking that turns off all switches of the inverter. there is. The movement of the front wheel 107 may be determined based on the handlebar 101 operated by the user. In addition, the rotation speed of the front wheel 107 may be reduced by mechanical braking by the brake lever 105 . Since the rear wheel 109 receives power by a motor connected to the inverter, the speed of the rear wheel 109 may be increased by the motor. In addition, the rotation speed of the rear wheel 109 may be reduced by electric braking. The speed of the electric movement device may be reduced by reducing the rotation speed of the front wheel 107 or the rear wheel 109 . Here, the motor may include a brushless direct current motor (BLDC), an induction motor, a reluctance motor, or a driving and regenerative braking type motor (for example, both a motor and a generator). there is.

The body frame 111 may serve as a support surface related to boarding the user. In this case, the shape of the body frame 111 may include a structure in which the user stands and boards or may further include a seat portion on the upper surface, and the body frame 111 may include a sensor for measuring the mounted weight. In addition, at least one of a battery, a controller, and an inverter may be mounted inside the body frame 111 , and thus the mounted components may be protected from external impact.

2 is a view showing a cross-sectional side view of the electric movement device according to an embodiment.

Referring to FIG. 2 , components mounted or attached to the electric movement device are illustrated.

A front lamp 201 may irradiate a light illuminating a front area of the electric mobile device while driving. In addition, the rear lamp 207 may irradiate a light illuminating the rear region of the electric mobile device while driving. In addition, according to an embodiment, a bottom light 209 attached to the bottom of the body frame may be included. The bottom light 209 may illuminate the road on which the electric mobile device travels while driving. At least one of the headlight 201 , the tail light 207 , and the bottom light 209 may be connected to a battery to receive power.

The controller 203 may control the overall electric mobile device. The battery pack 205 may include a battery and a battery management system (BMS), and the exterior of the battery pack 205 may protect the battery and the BMS from external impact. The battery may include a plurality of battery cells, and may include a rechargeable rechargeable battery pack that can be recharged. A battery can supply power to components such as motors, controllers, inverters, communication units, headlights, and tail lights.

3 is a view for explaining a driving unit of the electric movement device according to an embodiment.

Referring to Figure 3, the configuration of the driving unit of the electric movement device is disclosed. The driving unit may include at least one of the inverter 330 , the motor 350 , and the shunt resistor 370 , and may also include a front wheel 107 , a rear wheel 109 , and a brake 105 .

The electric movement device may include at least one of a battery 310 , a capacitor 320 , an inverter 330 , a controller 340 , a motor 350 , a sensor unit 360 , and a shunt resistor 370 . The capacitor 320 may be connected in parallel with the battery 310 to perform a function of smoothing the voltage supplied from the battery 310 . The capacitor 320 may store DC power, and both ends of the capacitor 320 may be referred to as DC link terminals. Although one capacitor 320 element is shown in the embodiment, stability can be secured by providing a plurality of capacitors.

The controller 340 may perform overall control operations related to the driving unit. For example, the controller 340 may monitor the voltage across the capacitor 320 serving as the DC link terminal. The control unit 340 may correspond to or be included in the controller of FIGS. 1 and 2 and operate. The controller 340 may control the inverter 330 in consideration of the monitored DC voltage and information sensed by the sensor unit 360 . For example, the controller 340 may control the switch of the inverter 330 based on the obtained information, and more specifically, may control a pulse width modulation (PWM) signal input to the inverter switch. On or off of the switches 331 to 336 included in the inverter 330 may be determined based on the PWM signal, and accordingly, the motor may be driven, and electrical control using the motor may also be performed.

Also, the controller 340 may control a duty ratio of the PWM signal. The duty ratio indicates the ratio of the time when the signal is high within one period of the PWM signal. By controlling the duty ratio in this way, the ratio of the time that the switch is in the on state can be adjusted. In an embodiment, the maximum value of the duty ratio may be 100%, and the minimum value may be 0%, and the controller 340 may variably adjust the duty ratio based on the obtained information. Setting the duty ratio of the switch to the maximum value may be a full-on mode, and setting the duty ratio of the switch to the minimum value may be a full-off mode. As described above, according to the duty ratio set by the controller 340 in the embodiment, the time maintained in the on state and the time maintained in the off state during one cycle of the switch may be changed. In this case, keeping the switch in an on state for one cycle of the switch may be a pull-on mode, and keeping the switch in an off state for one cycle of the switch may be a pull-off mode.

The control unit 340 may control the inverter 330 according to the PWM signal to change the DC power supplied from the battery 310 to AC power of a desired frequency, and may drive the motor 350 through the AC power. . The switches 331 to 336 included in the inverter 330 may be insulated gate bipolar transistors (IGBTs). The IGBT is a junction-type transistor in which a metal oxide semiconductor field effect transistor (MOSFET) is inserted into the gate, and the voltage between the gate and the emitter is driven and the power is switched on or off by an input signal. However, this is only an example, and the present invention is not limited thereto.

The switches 331 to 336 included in the inverter 330 may be divided into an upper switch and a lower switch according to an installation position, and the switch pair may include an upper switch and a lower switch. For example, the inverter 330 includes a first switch pair including a first upper switch 331 and a first lower switch 334 , a second upper switch 332 and a second lower switch 335 . It may include a third switch pair including a second switch pair, a third upper switch 333 and a third lower switch 336 .

The switch included in the inverter 330 may be lost due to various causes. For example, when an overvoltage is applied to the switch, when an overcurrent flows, when a back electromotive force occurs, when the temperature of the switch rises above a specific value, and when the switch temperature is maintained above a specific value. can be Among the above examples, there are many cases where the switch is damaged due to overcurrent flowing through the switch, and accordingly, it is necessary to monitor the value of the current flowing through the switch.

At least one of the switches and a shunt resistor 370 may be connected to monitor the current flowing through the switch. The phase current may be sensed by the shunt resistor 370 connected as described above. Specifically, the current flowing through the switch may be checked according to the voltage applied to the shunt resistor 370 and the resistance value of the shunt resistor, and if it exceeds a preset reference current, it may be determined as overcurrent. Although one shunt resistor 370 shown in FIG. 3 is connected to the ground terminal of the switches, according to an embodiment, it may be connected to the shunt resistor for each switch, and the control unit 340 monitors the voltage applied to the shunt resistor. You can check the current flowing through the switch.

The motor 350 includes a stator and a rotor, and AC power of a predetermined frequency is applied to the coils of the stators of each phase U, V, and W, so that the rotor can be rotated. The stator may be divided into three phases (U, V, W), and a coil is wound on each phase. The direction of the magnetic field formed inside the stator may also continuously change due to the change in the direction of the current input to the stator, and the rotor may rotate due to the change in the direction of the magnetic field. The rotation of the rotor is transmitted to the wheel through the rotation shaft, so that the wheel can be rotated.

The sensor unit 360 may include a plurality of sensors, and an example of the sensor may include a Hall sensor for sensing the rotation speed of the motor 350 . The control unit 340 may receive the rotation speed from the sensor unit 360 and control the inverter 330 based on this.

4 is a diagram for explaining a signal for controlling a switch included in an inverter according to an embodiment.

Referring to FIG. 4 , a signal applied to a switch of an inverter is shown.

As described above, the inverter includes a first switch pair including a first upper switch and a first lower switch, a second switch pair including a second upper switch and a second lower switch, and a third upper switch and a third lower switch. It may include a third switch pair that includes. 4 , the first upper switch 331 may be Sa, the second upper switch 332 may be Sb, and the third upper switch 333 may be Sc. In addition, the first lower switch 334 may be Sa', the second lower switch 335 may be Sb', and the third lower switch 336 may be Sc'. In the embodiment, a signal applied to each inverter is shown.

The first upper switch and the first lower switch may be connected in series, the second upper switch and the second lower switch may be connected in series, and the third upper switch and the third lower switch may be connected in series. Also, the first switch pair, the second switch pair, and the third switch pair may be connected in parallel to each other.

According to an embodiment, V0 is (Sa, Sb, Sc)=(0, 0, 0), and the first upper switch, the second upper switch, and the third upper switch may be in an off state. In this case, the first lower switch, the second lower switch, and the third lower switch may be in an on state. Accordingly, power generation may be braked by the first lower switch, the second lower switch, the third lower switch, and the motor.

In addition, V1 is (Sa, Sb, Sc)=(1, 0, 0), and the first upper switch may be in an on state, and the second upper switch and the third upper switch may be in an off state. In this case, the first lower switch may be in an off state, and the second lower switch and the third lower switch may be in an on state. Accordingly, regenerative braking may be performed based on the first upper switch, the second lower switch, and the third lower switch.

In addition, V2 is (Sa, Sb, Sc)=(1, 1, 0), so that the first upper switch and the second upper switch may be in an on state, and the third upper switch may be in an off state. In this case, the first lower switch and the second lower switch may be in an off state, and the third lower switch may be in an on state. Accordingly, regenerative braking may be performed based on the first upper switch, the second upper switch, and the third lower switch.

In addition, V3 is (Sa, Sb, Sc) = (1, 1, 1), and the first upper switch, the second upper switch, and the third upper switch may be in an on state. In this case, the first lower switch, the second lower switch, and the third lower switch may be in an off state. Accordingly, power generation may be braked by the first upper switch, the second upper switch, the third upper switch, and the motor.

Here, the holding times of the on or off states of each switch according to V1 to V3 may be different from each other, and a duty ratio may be determined based thereon.

5 is a diagram illustrating a switch control method for performing power generation braking according to an exemplary embodiment.

Referring to FIG. 5 , a switch control and circuit configuration for performing power generation braking is illustrated.

Referring to FIG. 4 together, identification number 510 is a state V0 of FIG. 4 , wherein the first upper switch 531 , the second upper switch 532 , and the third upper switch 533 are in an off state, and the first The lower switch 534 , the second lower switch 535 , and the third lower switch 536 may be in an on state. In this case, the electric movement device may operate in a power generation braking mode. When operating in the power generation braking mode, the motor may be braked by the generated counter electromotive force.

A braking current may be generated according to the power generation braking, and the amount of the generated braking current may be expressed as Equation 1 below. Here, Rs may represent a stator resistance included in the motor, We may represent an angular velocity, Ls may represent an inductance according to the motor, and Ke may represent a counter electromotive force constant. According to an embodiment, as the rotation speed of the motor increases, the amount of current generated according to the generation braking also increases, and an excessive generation braking current is generated according to the rotation speed of the motor, which may cause damage to the switch.

[Equation 1]

Identification number 540 is a diagram illustrating the flow of current according to switch control when generating braking for a three-phase motor is performed. In case of path ①, the flow of current flowing in (U=>V, W) is shown, in case of path ②, the flow of current flowing in (V=>W, U) is shown, and in case of path ③ (W=> The flow of current flowing in U, V) is shown. In the embodiment, all of the paths ① to ③ indicate a case in which the current according to the generation braking flows through the motor and the lower switches 534 , 535 , and 536 .

6 is a view for explaining a control signal input to a pair of switches according to the performance of driving and generating braking of a motor according to an exemplary embodiment.

Referring to FIG. 6 , signals for controlling switches corresponding to U+ and U- are shown. As an example, U+ may be the first upper switch, and U− may correspond to the first lower switch.

A control signal for driving the motor in normal operation is input to the inverter in the first section 610 . When the motor is driven for normal operation, when the first upper switch U+ is on, the first lower switch U- may be off. As described above, the motor can be operated normally by the intersection of U+ and U- on or off, and the wheel can be driven by the rotational force of the motor.

In the case of power generation braking, a control signal corresponding to the state V0 or V3 of FIG. 4 may be input, and the switch may be adjusted accordingly. In an embodiment, power generation braking may be continued according to the control of the controller, or generation braking may be turned off in some sections such as the second section 620 . In this case, the ratio occupied by the section in which the power generation braking is on in the second section 620 may correspond to the power generation braking duty ratio. When the power generation braking is on, the motor may be braked by the back electromotive force, and when the power generation braking is off, the back electromotive force may not be generated. 6 is a case of generation braking by the upper switch according to the state V3 of FIG. 4 . In the second section 620 , the lower switch U- may be in an off state.

7 is a diagram illustrating a switch control method according to regenerative braking according to an exemplary embodiment.

Referring to FIG. 7 , a method of controlling a switch for performing regenerative braking and a flow of current according to the method are illustrated.

In an embodiment, the regenerative braking may include a braking method of charging the battery by returning regenerative power generated according to electrical braking with respect to the rotation of the motor to the battery side. In an embodiment, when regenerative braking is performed, a current according to a switch state of the inverter may flow toward the battery 710 , and accordingly, the battery 710 may be charged. The first lower switch 734 , the second upper switch 732 , and the third upper switch 733 are in an on state, and the first upper switch 731 , the second lower switch 735 , and the third lower switch 736 are in an on state. ) may be in an off state. At the moment of regenerative braking, the generated regenerative power is returned to the battery 710 through the first lower switch 734 , the motor 740 , the second upper switch 732 , and the third upper switch 733 to charge the battery. and thus energy efficiency may be improved.

In an embodiment, when the battery 710 responds to a full charge state, the controller may control the inverter to brake in another way to prevent overcharging.

8 is a diagram illustrating spare braking according to an exemplary embodiment.

Referring to FIG. 8 , a state of an inverter switch for performing redundant braking according to an embodiment is shown.

In an embodiment, when all switches included in the inverter are in an off state, a separate electric braking force may not be generated, but a mechanical braking force may be generated due to rotational friction of the motor itself. In an embodiment, braking according to such a state may be referred to as spare braking. In this way, when operating with spare braking power, the power applied to the motor is cut off and a separate electromotive force is not generated according to the rotation of the motor, but braking force may be generated due to friction caused by the rotation of the motor itself. can be braked.

As described above, in the embodiment, the controller may generate braking force through at least one of power generation braking, regenerative braking, and reserve braking in relation to the motor. In addition, the control unit considers at least one of the speed of the electric mobile device, the battery charge state, the inclination related to the electric mobile device, whether the electric mobile device is authenticated, the amount of current flowing through the inverter, the temperature of the inverter, and power consumption of the electric mobile device. Braking methods related to motors can be applied differently.

9 is a block diagram related to an electric movement device according to an embodiment.

Referring to FIG. 9 , a block diagram related to a configuration included in the electric mobile device is displayed.

The electric mobile device 900 includes at least one of a light 910 , a sensor 920 , a driving unit 930 , a communication circuit 940 , a communication circuit battery 950 , a main battery 960 , and an output unit 970 . may include

The light 910 may include one or more light emitting bodies capable of irradiating illumination, and the electric mobile device 900 of the embodiment may include a headlight 912 , a tail lamp 914 , and a bottom lamp 916 . The headlight may irradiate the light illuminating the front area of the electric mobile device 900 , the tail light may irradiate the light illuminating the rear area of the electric mobile device 900 , and the bottom light may irradiate the light illuminating the rear area of the electric mobile device 900 . You can illuminate the lights that illuminate below.

The sensor unit 920 may sense physical and electrical measurements related to the electric movement device 900 . The sensor unit 920 may include at least one of a rotation speed sensor 922 , an acceleration sensor 924 , and a weight sensor 926 .

The rotation speed sensor 922 may sense the rotation speed of the motor. As an example of the rotation speed sensor 922, a Hall sensor may be included, and the Hall sensor may sense a change in magnetic flux by a stator and a rotor constituting the motor to sense the rotation speed of the motor.

The acceleration sensor 924 may detect rotation in each axis direction in three dimensions. Specifically, the acceleration sensor 924 may sense the acceleration with respect to the electric movement device in the X-axis, Y-axis, and Z-axis directions, and may sense a change in acceleration in the 3-axis direction.

Also, the weight sensor 926 may detect a weight mounted on the electric movement device 900 .

The driving unit 930 may include devices related to driving of the electric movement device, such as a front wheel, a rear wheel, an inverter, a motor, and a brake. A movement of the front wheel may be determined based on a handlebar operated by a user, and a rotational speed of the front wheel may be reduced by mechanical braking. In addition, since the rear wheel receives power by the motor connected to the inverter, the speed of the rear wheel may be increased by the motor, and the rotational speed of the rear wheel may be reduced by electric braking. However, the braking method of the front wheel and the rear wheel is not limited to the above method, and may be braked through at least one of the two braking methods.

The communication circuit 940 may transmit/receive information to and from external devices through wired/wireless communication.

The communication circuit battery 950 may be a battery that supplies power to the communication circuit 940 . The communication circuit battery 950 may exist separately from the main battery 960 or may exist inside the main battery 960 , and may be charged by the main battery 960 or charged through a separate connection circuit.

The main battery 960 may supply power to at least one of a motor, an inverter, a light 910 , an output unit 970 , and a communication circuit 940 .

The output unit 970 may include an output device for providing information to the user, and may include at least one of a speaker 972 providing a sound output and a display 924 providing a visual output. At least one of battery charge state information, user authentication information, speed information, vehicle state information, speed limit-related information, power information, boarding weight information, and communication circuit state information through the output unit 970 Information may be provided.

The controller 980 may control the overall operation of the electric movement apparatus 900 , and may control the operation of the electric movement apparatus 900 through at least one of the control methods described in the embodiment.

10 is a power-related circuit diagram of an electronic device according to an embodiment of the present specification.

Referring to FIG. 10 , a circuit related to power is shown, and the circuit may include a switching mode power supply (SMPS) 1010 and a voltage conversion unit 1020 . In an embodiment, the voltage conversion unit 1020 may include a low dropout (LDO) regulator.

In an embodiment, the SMPS 1010 may output a voltage of 15V, and a voltage converted to 5V through the voltage conversion unit 1020 may be output.

In an embodiment, the SMPS feedback terminal 1012 has a uniform potential value for feedback. More specifically, the potential value of the SMPS feedback terminal 1012 has a uniform value, and the uniform value may correspond to the potential value of the SMPS output terminal. For example, the potential of the feedback terminal of the SMPS may correspond to 5V.

The voltage conversion unit 1020 may have an output voltage corresponding to the input voltage. More specifically, in an embodiment, the voltage conversion unit 1020 may convert an input value of 15V into an output value of 5V. Meanwhile, in an embodiment, the output value of the voltage conversion unit 1020 may vary according to a change in an input value or an operating environment of the voltage conversion unit 1020, and may have an output value having a deviation from an ideal output value of 5V.

The output of the voltage conversion unit 1020 may be connected to the microcomputer, and the microcomputer may operate based on the output of the voltage conversion unit 1020 as described above. Since the microcomputer performs an operation based on the ideal output value of the voltage conversion unit 1020, when an error occurs in the output value of the voltage conversion unit 1020 from the ideal value, the operation of the microcomputer may be affected.

11 is a circuit diagram related to a microcomputer according to an embodiment of the present specification.

Referring to FIG. 11 , a connection relationship between a power circuit and a microcomputer is illustrated.

The first terminal 1112 of the microcomputer 1110 is connected to the SMPS feedback terminal 1120 , and the second terminal 1114 is connected to the output terminal 1130 of the voltage conversion unit. In an embodiment, the first terminal 1112 and the second terminal 1114 may be input terminals related to the ADC. In an embodiment, since power related to the operation of the microcomputer is supplied from the output terminal 1130 of the voltage conversion unit, it may be referred to as a power supply terminal. More specifically, the first terminal 1112 may receive an input value for performing the ADC operation, and the second terminal 1114 is a power input terminal. is carried out

In an embodiment, the microcomputer may perform an operation of the ADC based on information identified in the first terminal 1112 and the second terminal 1114 . Also, in an embodiment, the microcomputer 1110 may check the potential value of the third terminal 1116 based on the value confirmed at the second terminal 1114 . Also, the microcomputer 1110 may adjust the output value of the output terminal 1118 based on the confirmed potential value of the third terminal 1116 . For example, the microcomputer 1110 may check the input value of the third terminal 1116 based on the potential values of the first terminal 1112 and the second terminal 1114 , and perform ADC operation, and based on the ADC result value to adjust the output signal of the fourth terminal 1118 . The microcomputer 1110 may perform an ADC operation based on a voltage value received through the second terminal 1114 . More specifically, in the case of the second terminal 1114, it is ideally designed to receive a 5V value, and by comparing the potential value measured at the measurement target terminal with the value measured at the second terminal 1114, A potential value can be converted into a digital value. At this time, if a potential value having an error from an ideal value is input to the second terminal 1114 due to a malfunction of at least one of the power circuit and the regulator, the error value may also be reflected in the ADC result.

The SMPS feedback terminal 1120 outputs a potential value corresponding to 5V, which is an ideal output value in relation to the SMPS operation. The input value of the first terminal 1112 corresponding to the SMPS feedback terminal 1120 may be compared with the input value of the second terminal 1114 , and an error in the ADC output value may be corrected based on this. More specifically, if a difference value is generated by comparing the input value of the first terminal 1112 and the input value of the second terminal 1114, since the output value of the power circuit is different from the ideal value, the ADC result value is A microcomputer operation may be performed by reflecting the same difference value. More specifically, when the input value of the first terminal 1112 is greater than the input value of the second terminal 1114, it is determined that there is a negative offset in the regulator, and data processing that compensates for the offset information when performing the ADC operation can be performed. . In addition, when the input value of the first terminal 1112 is smaller than the input value of the second terminal 1114 , it is determined that there is a positive offset in the regulator, and data processing in which the offset information is compensated for when performing the ADC operation may be performed.

Compensating the offset information is a method of performing data compensation by reflecting the offset value or performing data compensation based on the ratio of the input value of the first terminal 1112 to the input value of the second terminal 1114 . can be applied.

For example, when the voltage value received at the first terminal 1112 is fixed to 5V, and the value received at the second terminal 1114 is 5V, when the input value to the third terminal 1116 is a, the fourth terminal ( 1118) can operate as b. At this time, when the input values of the second terminal 1114 are 4.95V and 5.05V, the output values of the fourth terminal 1118 are 5/4.95*b and 5/ for the same input value a of the third terminal 1116, respectively. It can work with 5.05*b. As such, when the ratio of the input value of the first terminal 1112 and the input value of the second terminal 1114 is greater than the reference value, the control signal output from the fourth terminal 1118 is the third terminal 1116 is output to correspond to the case in which an input value lower than the input value of the third terminal 1116 is received, and the ratio of the input value of the first terminal 1112 and the input value of the second terminal 1114 is the When it is smaller than the reference value, the control signal output from the fourth terminal 1118 may be output to correspond to the case in which an input value higher than the input value of the third terminal 1116 is received by the third terminal 1116 . .

The example described herein corresponds to an example, and the ratio or offset adjusted according to the design of the circuit may be set differently. In the present embodiment, correction is performed in the ADC operation according to the potential values identified at the first terminal 1112 and the second terminal 1114 , so that the output of the fourth terminal 1118 is also the same as the input value of the third terminal 1116 . include features whose values can be changed correspondingly.

Meanwhile, since the electronic device of the embodiment includes one ADC-related module, when a failure occurs in the corresponding ADC-related module, it is necessary to detect it and perform an appropriate response operation. If there are a plurality of ADC-related modules, the same input is provided to each ADC module, and when the difference between the output values is greater than a specific value, a failure can be identified. However, if there is only one ADC module, the failure cannot be checked in this way.

Accordingly, in the embodiment, the input value of the first terminal 1112 connected to the SMPS feedback terminal 1120 is monitored, and when the corresponding ADC result value is out of a specific range, it can be confirmed that the ADC has failed. More specifically, the SMPS feedback terminal 1120 has an output value within a range corresponding to 5V. If the ADC conversion value does not correspond to this, it may be determined that an ADC failure has occurred. The range corresponding to 5V may be determined in consideration of the bit error of the microcomputer and the measurement error value of the ADC. For example, when the input value of the first terminal is out of 4.5 to 5.5V, it may be detected that a failure has occurred in the ADC.

In an embodiment, due to a failure of the power supply circuit, the input value of at least one of the first terminal 1112 and the second terminal 1114 may deviate from the expected value. It can detect a failure and perform an action corresponding to it.

In this way, by connecting the SMPS feedback terminal 1120 to the ADC module, compensating for an error in the ADC result value based on the corresponding value, and detecting a failure of the ADC module or power-related circuit, reliable operation of the microcomputer can be guaranteed. .

In addition, in the embodiment, when an output value that deviates from 95% to 105% of the reference output value is confirmed based on the reference output voltage of the regulator, it is determined that there is an abnormality in the circuit, and accordingly, a control signal for controlling the electric movement device is provided. can be created, and related information can be provided to the user.

12 is a flowchart illustrating a method of performing an ADC-related operation in a microcomputer according to an embodiment of the present specification.

Referring to FIG. 12 , a method of performing an ADC-related operation in a microcomputer according to an embodiment is illustrated. In all embodiments, the operation of the microcomputer may be described as the operation of the controller.

In step 1205, the controller may check the input value of the first terminal connected to the SMPS feedback terminal. In an embodiment, the first terminal may be a terminal for receiving an ADC input, and the control unit may detect whether at least one of the power supply unit and the ADC module is operating normally based on the checked value. More specifically, the control unit may determine whether the ADC result value corresponding to the input value of the first terminal corresponds to a specific range related to the SMPS feedback, and based on this, detect whether the ADC module is operating normally. When the ADC result value for the first terminal corresponds to a specific range, the controller may use the ADC result value for the first terminal to check an offset for compensation for another ADC result value.

In operation 1210, the controller may check the input value of the second terminal connected to the power. In an embodiment, when the value checked at the second terminal is out of a specific value range corresponding to the power supply unit, the control unit may determine an abnormality in at least one of the power supply unit and the ADC. When the input value of the second terminal corresponds to a specific range related to the power supply, the control unit derives another ADC result value, and may use the measurement value for the second terminal to check an offset for compensating the ADC result value. .

In step 1215, the controller may check an offset value to be applied to the ADC result value based on the value checked in the previous step.

For example, based on the difference between the input value of the first terminal and the input value of the second terminal, an offset value to be applied to the ADC result value may be checked.

In operation 1220, the controller may check an input value of the third terminal that receives an input for performing ADC based on the checked offset value. More specifically, the ADC module applies the input value of the second terminal as a reference value to derive the ADC result value for the input value of the third terminal. The control unit may compensate the ADC result value by applying the offset value determined in the previous step to the result value derived by the ADC module. For example, if the input value of the second terminal connected to the power supply is smaller than the input value of the first terminal connected to the SMPS feedback terminal, it is confirmed that there is a negative offset in the output of the power supply, and accordingly, the negative offset is reflected in the ADC result value. You can check the result value.

13 is a flowchart illustrating a method of performing an ADC-related operation in a microcomputer according to another embodiment of the present specification.

Referring to FIG. 13 , a method of performing an ADC-related operation in a microcomputer according to an embodiment is illustrated. In all embodiments, the operation of the microcomputer may be described as the operation of the controller.

In step 1305, the controller may check the input value of the first terminal connected to the SMPS feedback terminal. In an embodiment, the first terminal may be a terminal for receiving an ADC input, and the control unit may detect whether at least one of the power supply unit and the ADC module is operating normally based on the checked value. More specifically, the control unit may determine whether the ADC result value corresponding to the input value of the first terminal corresponds to a specific range related to the SMPS feedback, and based on this, detect whether the ADC module is operating normally. When the ADC result value for the first terminal corresponds to a specific range, the controller may use the ADC result value for the first terminal to check an offset for compensation for another ADC result value.

In operation 1310, the control unit may check the input value of the second terminal connected to the power. In an embodiment, when the value checked at the second terminal is out of a specific value range corresponding to the power supply unit, the control unit may determine an abnormality in at least one of the power supply unit and the ADC. When the input value of the second terminal corresponds to a specific range related to the power supply, the control unit derives another ADC result value, and may use the measurement value for the second terminal to check an offset for compensating the ADC result value. .

In operation 1315, the controller may determine a correction ratio value to be applied to the ADC result value based on the value confirmed in the previous step.

For example, based on the difference between the input value of the first terminal and the input value of the second terminal, a correction ratio value to be applied to the ADC result value may be checked.

In operation 1320, the controller may check the input value of the third terminal that receives the input for performing the ADC based on the checked correction ratio value. More specifically, the ADC module applies the input value of the second terminal as a reference value to derive the ADC result value for the input value of the third terminal. The control unit may compensate the ADC result value by applying the correction ratio value determined in the previous step to the result value derived by the ADC module. For example, the control unit may determine the input value of the third terminal based on the value obtained by multiplying the ratio of the input value of the second terminal connected to the power supply and the first terminal connected to the SMPS feedback terminal by the ADC sensing value for the third terminal. . More specifically, when the input value of the first terminal is V1, the input value of the second terminal is V2, and the correction ratio is R, the calculation method is as follows.

[Equation 2]

R = V1/V2

The controller may check the actual input value of the third terminal by multiplying the measured value of the third terminal by the correction ratio R.

As described above, in the embodiment, by checking the offset value or the correction ratio and performing the ADC based on this, a more accurate measurement value can be obtained by reflecting the error of the regulator. In an embodiment, the input values of the first terminal and the second terminal may be repeatedly checked in order to check the correction ratio, and the value measured in a specific section before performing the related ADC procedure may be reflected in the ADC procedure. In addition, measurement for detecting an ADC-related failure can be performed every cycle, and when a failure is confirmed, the related operation can be stopped, and information about the failure can be provided to the user.

In an embodiment, the ADC measurement may be used to confirm at least one of a voltage and a current of a circuit for driving a motor, and an offset value or a correction ratio corresponding thereto may be applied as a value confirmed before driving the motor.

14 is a flowchart illustrating a method for controlling driving of a motor in a microcomputer according to an embodiment of the present specification.

Referring to FIG. 14 , a method of performing ADC in a microcomputer to drive a motor of an electric mobile device is illustrated.

In step 1405, the controller may check a correction ratio for an input value for the ADC. A method similar to the method described in the previous embodiment may be used as a method of confirming the correction ratio for the input value.

In step 1410, the controller may check a command related to driving the motor. In an embodiment, a command related to driving a motor may be identified in response to a user's acceleration input. Also, a command related to driving the motor may be identified according to information for controlling the motor according to other driving conditions.

In operation 1415, the controller may check at least one of a first terminal input value connected to the SMPS feedback terminal and a second terminal input value connected to power. In an embodiment, it may be determined whether at least one of the ADC-related module and the power circuit operates normally based on such a value, which will be described below.

In operation 1420, the controller may determine whether the input value of the first terminal corresponds to the first reference range. In an embodiment, the first terminal input value corresponds to the potential value of the SMPS feedback terminal, and the first reference range may be a value between 98% and 102% of the designed SMPS feedback output value. When the first terminal input value does not correspond to the first reference range, it is detected that a failure has occurred in the ADC module or the SMPS, and in step 1430, the controller may generate a failure related control signal. The fault occurrence related control signal may include a command for displaying fault related information on a display and a command for stopping the operation of the electric mobile device.

In operation 1425, the controller may determine whether the input value of the second terminal corresponds to the second reference range. In an embodiment, the second terminal input value corresponds to the regulator output potential value, and the first reference range may be a value between 95% and 105% of the designed regulator output potential value. When the second terminal input value does not correspond to the second reference range, it is detected that a failure has occurred in the ADC module or the regulator, and in step 1430, the controller may generate a failure related control signal. The fault occurrence related control signal may include a command for displaying fault related information on a display and a command for stopping the operation of the electric mobile device.

In an embodiment, the first reference range may be included in the second reference range. Also, depending on the design, the maximum value divided by the minimum value of the first reference range may be smaller than the maximum value divided by the minimum value of the second reference range. In an embodiment, since the change in the output potential value of the SMPS feedback terminal is smaller than the change in the regulator output value, the first reference value and the second reference value may be set in consideration of this.

When each input value corresponds to the reference value in steps 1420 and 1425, the controller may check a value corresponding to the analog input input to the third terminal based on the checked correction ratio in step 1435. More specifically, the analog input input to the third terminal may be checked by applying the correction ratio derived in step 1405 to the ADC result value of the third terminal.

Examples of analog input values in the embodiment include a signal related to information on speed measured by a Hall sensor, a signal including information about a current related to driving a motor sensed by a shunt resistor, and temperature information sensed by a temperature sensor may include at least one of signals related to , and the controller may perform ADC based on the signal, and may perform a corresponding operation according to the ADC result value. As an example, the control unit that has received the signal related to the speed information may check the speed information by referring to the ADC result value, the first terminal input value, and the second terminal input value, and display the checked speed information. can be displayed on the display. Therefore, even when the output value of the hall sensor is constant, if at least one of the first terminal input value and the second terminal input value is changed, the control unit can correct and confirm the speed value, and provide information about this to the display .

Throughout the embodiments, the electric mobile device may perform the method of the embodiment by the operation of the controller. The control unit may include a microcomputer, and the control unit may perform a determination based on an electrical signal received from the first component of the electric mobile device, and output an electrical signal to control the second component according to the determination. In an embodiment, the first component may include an element, such as a sensor, for changing a physical value related to the operation of the electric movement device into an electrical value. The second component may include a motor and an electrical load that can be driven under the control of the controller, and it is obvious to those skilled in the art that the inverter can be controlled to control the motor.

In relation to the operation of the microcomputer, by monitoring the current or voltage of the input terminal and the output terminal of the microcomputer, it is possible to check whether the microcomputer is operating or not and detailed information about the operation. More specifically, receiving the input value from the microcomputer may include checking at least one of a voltage and a current value related to a corresponding terminal. This can be confirmed by externally monitoring at least one of the voltage and current values related to the corresponding terminal, and by changing the output value corresponding to the input value of the corresponding terminal, it can be confirmed that the control unit performs an operation based on the corresponding value. . In this way, the information input to the microcomputer can be confirmed by monitoring at least one of the voltage and current of the corresponding terminal, and the information related to the ADC operation can be confirmed by monitoring the input value of the ADC-related input terminal and monitoring the corresponding output value. can It can also be confirmed by directly monitoring the information related to the output bit of the ADC packaging inside the microcomputer.

On the other hand, in the present specification and drawings, preferred embodiments of the present invention have been disclosed, and although specific terms are used, these are only used in a general sense to easily explain the technical content of the present invention and help the understanding of the present invention, It is not intended to limit the scope of the invention. It will be apparent to those of ordinary skill in the art to which the present invention pertains that other modifications based on the technical spirit of the present invention can be implemented in addition to the embodiments disclosed herein.

Claims (21)

In the control method of the microcomputer,
receiving an input value of a first terminal connected to a feedback terminal of a power supply;
receiving an input value of a second terminal connected to a regulator output; and
and outputting a control signal according to an input value of a third terminal receiving an analog input value based on the input value of the first terminal and the input value of the second terminal. According to claim 1,
The step of outputting a control signal related to the input value of the third terminal comprises:
and outputting a control signal according to the input value of the third terminal in consideration of an offset value determined based on a ratio of the input value of the first terminal and the input value of the second terminal. According to claim 1,
When the ratio of the input value of the first terminal and the input value of the second terminal is greater than a reference value, the control signal corresponds to a case in which an input value lower than the input value of the third terminal is received at the third terminal. output,
When the ratio of the input value of the first terminal and the input value of the second terminal is less than the reference value, the control signal corresponds to the case where an input value higher than the input value of the third terminal is received at the third terminal Control method, characterized in that the output to be. According to claim 1,
The control signal is output based on an offset determined based on an input value of the first terminal and an input value of the second terminal and output bit information related to a digital value corresponding to the input value of the third terminal control method. According to claim 1,
Further comprising the step of receiving a command related to the input value of the third terminal,
The control signal is output according to the input value of the first terminal and the input value of the second terminal received in response to the command reception. According to claim 1,
outputting a control signal related to the occurrence of an error in at least one of a case in which an input value of the first terminal does not correspond to a first reference range and a case in which an input value of the second terminal does not correspond to a second reference range; Control method, characterized in that it further comprises. 7. The method of claim 6,
The second reference range includes the first reference range. 7. The method of claim 6,
The second reference range is determined based on a reference output voltage of the regulator, and the second reference range includes a value between 95% and 105% of the reference output. 7. The method of claim 6,
The control signal related to the occurrence of the error is
A control method comprising: at least one of a command for displaying error occurrence information on a display and a command for stopping an operation of a device related to analog-to-digital conversion. According to claim 1,
displaying information related to an input value of a third terminal; and
The method of claim 1, further comprising correcting and displaying the input value of the third terminal based on at least one of a change in the input value of the first terminal and a change in the input value of the second terminal.
In the microcomputer,
a first terminal connected to a feedback terminal of the power supply;
a second terminal connected to the regulator output;
a third terminal for receiving an analog input value; and
and a fourth terminal for outputting a control signal related to the input value of the third terminal based on the input value of the first terminal and the input value of the second terminal. 12. The method of claim 11,
The control signal is generated in consideration of an offset value determined based on a ratio of the input value of the first terminal and the input value of the second terminal. 13. The method of claim 12,
When the ratio of the input value of the first terminal and the input value of the second terminal is greater than a reference value, the control signal corresponds to a case in which an input value lower than the input value of the third terminal is received at the third terminal. output,
When the ratio of the input value of the first terminal and the input value of the second terminal is less than the reference value, the control signal corresponds to the case where an input value higher than the input value of the third terminal is received at the third terminal A microcomputer, characterized in that it is output to do so. 12. The method of claim 11,
The control signal is output based on output bit information related to an offset determined based on the input value of the first terminal and the input value of the second terminal and a digital value corresponding to the input value of the third terminal microcomputer. 12. The method of claim 11,
,
the control signal is output from the fourth terminal according to a command related to the input value of the third terminal;
The control signal is output according to the input value of the first terminal and the input value of the second terminal received in response to the command reception. 12. The method of claim 11,
a control unit for outputting a control signal related to the occurrence of an error in at least one case when the input value of the first terminal does not correspond to the first reference range and when the input value of the second terminal does not correspond to the second reference range; Microcomputer, characterized in that it further comprises. 17. The method of claim 16,
The second reference range is a microcomputer, characterized in that it includes the first reference range. 17. The method of claim 16,
The second reference range is determined based on a reference output voltage of the regulator, and the second reference range includes a value between 95% and 105% of the reference output. 17. The method of claim 16,
The control signal related to the occurrence of the error is
A microcomputer comprising at least one of a command for displaying error occurrence information on a display and a command for stopping an operation of a device related to analog-to-digital conversion. 12. The method of claim 11,
the control unit
Display information related to the input value of the third terminal,
The microcomputer according to claim 1, wherein the input value of the third terminal is corrected and displayed based on at least one of a change in the input value of the first terminal and a change in the input value of the second terminal. In the electric movement device,
display;
sensor to detect speed;
a power supply including a feedback terminal;
a regulator including an output terminal; and
a first terminal connected to the feedback terminal, a second terminal connected to the output, and a third terminal connected to the sensor, and display speed-related information on the display in response to an input value of the third terminal including a control unit that
The speed-related information is an electric movement device, characterized in that the control based on at least one of the first terminal input value and the second terminal input value.

Images