WO2021253203A1 - Detection system for variable-frequency motor driver - Google Patents

Detection system for variable-frequency motor driver Download PDF

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Publication number
WO2021253203A1
WO2021253203A1 PCT/CN2020/096243 CN2020096243W WO2021253203A1 WO 2021253203 A1 WO2021253203 A1 WO 2021253203A1 CN 2020096243 W CN2020096243 W CN 2020096243W WO 2021253203 A1 WO2021253203 A1 WO 2021253203A1
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Prior art keywords
module
motor driver
current
micro
voltage
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PCT/CN2020/096243
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French (fr)
Chinese (zh)
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高强
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江苏新安电器股份有限公司
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Application filed by 江苏新安电器股份有限公司 filed Critical 江苏新安电器股份有限公司
Priority to PCT/CN2020/096243 priority Critical patent/WO2021253203A1/en
Priority to CN202080001063.2A priority patent/CN112020632A/en
Publication of WO2021253203A1 publication Critical patent/WO2021253203A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0428—Safety, monitoring
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/26—Pc applications
    • G05B2219/2612—Data acquisition interface

Definitions

  • the invention relates to the technical field of motors, in particular to a detection system for variable frequency motor drives.
  • the frequency conversion permanent magnet motor is a kind of frequency conversion motor which is widely used. Its structure is simple, the performance is superior, and the development prospect is broad.
  • the variable frequency permanent magnet motor is a new type of mechatronics motor developed on the basis of a brushed DC motor. It uses an electronic commutator to replace mechanical brushes and mechanical commutators, so that this motor not only retains the DC motor’s The original excellent performance, and the AC motor has the advantages of simple structure, reliable operation and convenient maintenance.
  • the variable-frequency permanent magnet motor is mainly composed of the motor body, the rotor position sensor and the driving circuit.
  • the three-part DC power supply supplies power to the motor stator winding through the electronic switch circuit.
  • the position sensor detects the position of the rotor at any time and controls the switch according to the position signal of the rotor.
  • the MOS tube is turned on and off to control the operation of the motor.
  • the traditional motor drive detection device has the problem of poor timeliness of fault detection, and the fault cannot be found in time before operation.
  • the purpose of the present invention is to provide a detection system for a variable frequency motor drive to solve the above-mentioned problems in the background art.
  • the present invention provides the following technical solutions.
  • the detection system of the variable frequency motor drive includes a micro-controller, the signal input end of the micro-controller is connected with a voltage detection module, a current detection module, a temperature detection module, and a humidity detection module, and the signal output end of the micro-controller is connected There is a prompt module, the signal output terminal of the microcontroller is connected to the motor drive circuit, the current detection module is used to detect the output current of the motor driver, the voltage detection module is used to detect the input voltage of the motor driver, the The temperature detection module is used to detect the temperature of the external environment of the motor driver, and the humidity detection module is used to detect the humidity of the external environment of the motor driver.
  • the voltage detection module includes a voltage sampling module and a voltage comparison module
  • the voltage sampling module is provided in multiple groups for sampling the input voltage signal of the motor driver
  • the voltage comparison module is used for comparing the sampled voltage Signals and preset voltage thresholds.
  • the microcontroller sends a warning message through the reminder module and controls the motor driver to stop working.
  • the current detection module includes a current sampling module and a current comparison module
  • the current sampling modules are provided in multiple groups for sampling the output current of each phase of the motor driver
  • the current comparison module is used for comparison Sampling the current signal and the preset current threshold, when the calculation result exceeds the threshold, it sends a reminder to the microcontroller.
  • the microcontroller sends a warning through the reminder module and controls the motor driver to stop working.
  • the micro-controller is connected with a coil resistance calculation module, and the coil resistance calculation module is used to calculate the motor coil resistance value according to the sampling data of the current monitoring module, and compare it with a preset threshold value. When the calculation result exceeds the threshold value, a prompt message is sent to the microcontroller, and the microcontroller sends a warning message through the prompt module and controls the motor driver to stop working.
  • the specific steps of the current sampling module sampling the output current are: when the motor driver outputs a 0-degree phase voltage with a preset duty cycle, detecting the output current of the motor driver to obtain the output current at the 0-degree phase; When the driver outputs a 120-degree phase voltage with a preset duty cycle, the output current of the motor driver is detected to obtain the output current at a 120-degree phase; when the motor driver outputs a 240-degree phase voltage with a preset duty cycle, the motor driver's output current is detected. Output current, get the output current under 240 degree phase.
  • the humidity detection module is an HR202 resistive humidity sensor.
  • the micro-controller is also connected with a micro-fan, and when the temperature detection module detects that the temperature exceeds a set threshold, the micro-controller sends a signal to the micro-fan to increase the power of the micro-fan and increase the air flow. Increase the heat dissipation effect. After the temperature detection module detects that the temperature drops below the threshold, the microcontroller sends a signal to the micro fan to reduce the power of the micro fan to the normal mode.
  • the micro-controller is also connected with a dehumidification module.
  • the micro-controller activates the dehumidification module to reduce the humidity.
  • the dehumidification module includes a DC power supply and a PTC electric heating element, The direct current power supply is used to supply power to the PTC electric heating element.
  • the PTC electric heating element is activated after receiving a signal from the microcontroller to generate heat and promote the drying and evaporation of moisture, thereby reducing the humidity.
  • the microcontroller sends a signal to stop the PTC heating element.
  • the beneficial effects of the present invention are: the present invention can detect the input voltage, output current and coil resistance of the motor driver in time, monitor the hardware of the motor driver, and send out an alarm signal in time when a fault occurs. With high performance, it can also detect the temperature and humidity of the external environment of the motor drive to ensure that the electronic components are in a suitable working environment.
  • Figure 1 is a schematic diagram of a detection system for a variable frequency motor drive.
  • a detection system for a variable frequency motor drive includes a micro-controller, the signal input end of the micro-controller is connected with a voltage detection module, a current detection module, a temperature detection module, and a humidity A detection module, the signal output terminal of the microcontroller is connected with a prompt module, the signal output terminal of the microcontroller is connected with the motor drive circuit, and the current detection module is used to detect the output current of the motor driver.
  • the detection module is used to detect the input voltage of the motor driver
  • the temperature detection module is used to detect the temperature of the external environment of the motor driver
  • the humidity detection module is used to detect the humidity of the external environment of the motor driver.
  • the voltage detection module includes a voltage sampling module and a voltage comparison module.
  • the voltage sampling module is provided with multiple groups for sampling the input voltage signal of the motor driver.
  • the voltage comparison module is used to compare the sampled voltage signal with The set voltage threshold value, when the calculation result exceeds the threshold value, a reminder message is sent to the microcontroller, and the microcontroller sends a warning message through the reminder module and controls the motor driver to stop working.
  • the current detection module includes a current sampling module and a current comparison module.
  • the current sampling module is provided in multiple groups for sampling the output current of each phase of the motor driver.
  • the current comparison module is used for comparing the sampled current signal. Compared with the preset current threshold, when the calculation result exceeds the threshold, it will send a reminder message to the microcontroller, and the microcontroller will send a warning message through the reminder module and control the motor driver to stop working.
  • the micro-controller is connected with a coil resistance calculation module, which is used to calculate the motor coil resistance value according to the sampling data of the current monitoring module, and compare it with a preset threshold value. When the calculation result exceeds In the case of a threshold value, a reminder message is sent to the microcontroller, and the microcontroller sends a warning message through the reminder module and controls the motor driver to stop working.
  • the specific steps for the current sampling module to sample the output current are: when the motor driver outputs a 0-degree phase voltage with a preset duty cycle, detect the output current of the motor driver to obtain the output current at the 0-degree phase; When the duty cycle of the 120-degree phase voltage is set, the output current of the motor driver is detected to obtain the output current at the 120-degree phase; when the motor driver outputs the 240-degree phase voltage of the preset duty cycle, the output current of the motor driver is detected, Obtain the output current at a phase of 240 degrees.
  • the humidity detection module is an HR202 resistance humidity sensor.
  • the micro-controller is also connected with a micro-fan, and when the temperature detection module detects that the temperature exceeds a set threshold, the micro-controller sends a signal to the micro-fan to increase the power of the micro-fan, increase air flow, and increase heat dissipation. As a result, after the temperature detection module detects that the temperature drops below the threshold, the microcontroller sends a signal to the micro fan to reduce the power of the micro fan to the normal mode.
  • the micro-controller is also connected with a dehumidification module.
  • the micro-controller activates the dehumidification module to reduce the humidity.
  • the dehumidification module includes a DC power supply and a PTC electric heating element.
  • the power supply is used to supply power to the PTC electric heating element.
  • the PTC electric heating element is activated after receiving a signal from the microcontroller to generate heat and promote the drying and evaporation of moisture, thereby reducing the humidity.
  • the microcontroller sends a signal to stop the PTC heating element.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

A detection system for a variable-frequency motor driver. The detection system comprises a microcontroller, wherein a signal input end of the microcontroller is connected to a voltage measurement module, a current measurement module, a temperature measurement module and a humidity measurement module; a signal output end of the microcontroller is connected to a prompt module, and the signal output end of the microcontroller is connected to a motor driving circuit; and the current measurement module is used for measuring an output current of a motor driver, and the voltage measurement module is used for measuring an input voltage of the motor driver. By means of the detection system, an input voltage, an output current and the coil resistance of a motor driver can be measured in a timely manner, hardware monitoring is performed on the motor driver, and when a fault occurs, an alarm signal is provided in a timely manner. The detection is high in timeliness, and the temperature and humidity of an external environment of the motor driver can also be measured, thereby ensuring that an electronic element is in a suitable working environment.

Description

变频式电机驱动器的检测***Detection system of variable frequency motor driver 技术领域Technical field
本发明涉及电机技术领域，具体为变频式电机驱动器的检测***。The invention relates to the technical field of motors, in particular to a detection system for variable frequency motor drives.
背景技术Background technique
变频永磁电机是一种应用非常广泛的变频用的电机，其结构简单，性能优越，发展前景广阔。变频永磁电机是在有刷直流电动机基础上发展起来的一种新型机电一体化的电动机，它利用电子换向器取代机械电刷和机械换向器，使这种电机不仅保留了直流电机的原有的优良性能，而且具有交流电动机的结构简单、运行可靠、维护方便等优点。变频永磁电机主要由电机本体、转子位置传感器和驱动电路三部分组直流电源通过电子开关电路向电动机定子绕组供电，位置传感器随时检测到转子所处的位置，并根据转子的位置信号来控制开关MOS管的导通和截止，从而控制电机的运转。The frequency conversion permanent magnet motor is a kind of frequency conversion motor which is widely used. Its structure is simple, the performance is superior, and the development prospect is broad. The variable frequency permanent magnet motor is a new type of mechatronics motor developed on the basis of a brushed DC motor. It uses an electronic commutator to replace mechanical brushes and mechanical commutators, so that this motor not only retains the DC motor’s The original excellent performance, and the AC motor has the advantages of simple structure, reliable operation and convenient maintenance. The variable-frequency permanent magnet motor is mainly composed of the motor body, the rotor position sensor and the driving circuit. The three-part DC power supply supplies power to the motor stator winding through the electronic switch circuit. The position sensor detects the position of the rotor at any time and controls the switch according to the position signal of the rotor. The MOS tube is turned on and off to control the operation of the motor.
技术问题technical problem
传统的电机驱动器检测装置存在故障检测及时性差的问题，不能够在运行前及时发现故障。本发明的目的在于提供变频式电机驱动器的检测***，以解决上述背景技术中提出的问题。The traditional motor drive detection device has the problem of poor timeliness of fault detection, and the fault cannot be found in time before operation. The purpose of the present invention is to provide a detection system for a variable frequency motor drive to solve the above-mentioned problems in the background art.
技术解决方案Technical solutions
为实现上述目的，本发明提供如下技术方案。In order to achieve the above objective, the present invention provides the following technical solutions.
    变频式电机驱动器的检测***，包括微型控制器，所述微型控制器的信号输入端连接有电压检测模块、电流检测模块、温度检测模块、湿度检测模块，所述微型控制器的信号输出端连接有提示模块，所述微型控制器的信号输出端与电机驱动电路相连接，所述电流检测模块用于检测电机驱动器的输出电流，所述电压检测模块用于检测电机驱动器的输入电压，所述温度检测模块用于检测电机驱动器的外部环境的温度，所述湿度检测模块用于检测电机驱动器的外部环境的湿度。The detection system of the variable frequency motor drive includes a micro-controller, the signal input end of the micro-controller is connected with a voltage detection module, a current detection module, a temperature detection module, and a humidity detection module, and the signal output end of the micro-controller is connected There is a prompt module, the signal output terminal of the microcontroller is connected to the motor drive circuit, the current detection module is used to detect the output current of the motor driver, the voltage detection module is used to detect the input voltage of the motor driver, the The temperature detection module is used to detect the temperature of the external environment of the motor driver, and the humidity detection module is used to detect the humidity of the external environment of the motor driver.
    优选的，所述电压检测模块包括电压采样模块与电压比对模块，所述电压采样模块设置有多组，用于采样电机驱动器的输入电压信号，所述电压比对模块用于比对采样电压信号与预先设定的电压阈值，在出现计算结果超出阈值的情况时，向微型控制器发出提示信息，微型控制器通过提示模块发出警示信息，并控制电机驱动器停止工作。Preferably, the voltage detection module includes a voltage sampling module and a voltage comparison module, the voltage sampling module is provided in multiple groups for sampling the input voltage signal of the motor driver, and the voltage comparison module is used for comparing the sampled voltage Signals and preset voltage thresholds. When the calculation result exceeds the threshold, it will send a reminder message to the microcontroller. The microcontroller sends a warning message through the reminder module and controls the motor driver to stop working.
    优选的，所述电流检测模块包括电流采样模块与电流比对模块，所述电流采样模块设置有多组，用于采样电机驱动器的各相的输出电流，所述电流比对模块用于比对采样电流信号与预先设定的电流阈值，在出现计算结果超出阈值的情况时，向微型控制器发出提示信息，微型控制器通过提示模块发出警示信息，并控制电机驱动器停止工作。Preferably, the current detection module includes a current sampling module and a current comparison module, the current sampling modules are provided in multiple groups for sampling the output current of each phase of the motor driver, and the current comparison module is used for comparison Sampling the current signal and the preset current threshold, when the calculation result exceeds the threshold, it sends a reminder to the microcontroller. The microcontroller sends a warning through the reminder module and controls the motor driver to stop working.
    优选的，所述微型控制器连接有线圈电阻计算模块，所述线圈电阻计算模块用于根据电流监测模块的采样数据，计算电机线圈电阻值，并与预先设定的阈值进行比对，在出现计算结果超出阈值的情况时，向微型控制器发出提示信息，微型控制器通过提示模块发出警示信息，并控制电机驱动器停止工作。Preferably, the micro-controller is connected with a coil resistance calculation module, and the coil resistance calculation module is used to calculate the motor coil resistance value according to the sampling data of the current monitoring module, and compare it with a preset threshold value. When the calculation result exceeds the threshold value, a prompt message is sent to the microcontroller, and the microcontroller sends a warning message through the prompt module and controls the motor driver to stop working.
    优选的，所述电流采样模块采样输出电流的具体步骤为：在电机驱动器输出预设占空比的0度相位电压时，检测电机驱动器的输出电流，得到0度相位下的输出电流；在电机驱动器输出预设占空比的120度相位电压时，检测电机驱动器的输出电流，得到120度相位下的输出电流；在电机驱动器输出预设占空比的240度相位电压时，检测电机驱动器的输出电流，得到240度相位下的输出电流。Preferably, the specific steps of the current sampling module sampling the output current are: when the motor driver outputs a 0-degree phase voltage with a preset duty cycle, detecting the output current of the motor driver to obtain the output current at the 0-degree phase; When the driver outputs a 120-degree phase voltage with a preset duty cycle, the output current of the motor driver is detected to obtain the output current at a 120-degree phase; when the motor driver outputs a 240-degree phase voltage with a preset duty cycle, the motor driver's output current is detected. Output current, get the output current under 240 degree phase.
    优选的，所述湿度检测模块为HR202电阻型湿度传感器。Preferably, the humidity detection module is an HR202 resistive humidity sensor.
    优选的，所述微型控制器还连接有微型风扇，所述温度检测模块检测到温度超过设定的阈值时，微型控制器向微型风扇发出信号，增大微型风扇的功率，提高气流流通量，增大散热效果，在温度检测模块检测到温度降低到阈值之下之后，微型控制器向微型风扇发出信号，将微型风扇的功率降低到正常模式。Preferably, the micro-controller is also connected with a micro-fan, and when the temperature detection module detects that the temperature exceeds a set threshold, the micro-controller sends a signal to the micro-fan to increase the power of the micro-fan and increase the air flow. Increase the heat dissipation effect. After the temperature detection module detects that the temperature drops below the threshold, the microcontroller sends a signal to the micro fan to reduce the power of the micro fan to the normal mode.
    优选的，所述微型控制器还连接有除湿模块，在湿度检测模块检测到湿度超过设定的阈值时，微型控制器启动除湿模块，降低湿度，所述除湿模块包括直流电源和PTC电热元件，所述直流电源用于为PTC电热元件供电，所述PTC电热元件在收到微型控制器的信号后启动，产生热量，促使水分烘干蒸发，从而降低湿度，当湿度检测模块检测到湿度降低到阈值之下之后，微型控制器发出信号，使PTC电热元件停止工作。Preferably, the micro-controller is also connected with a dehumidification module. When the humidity detection module detects that the humidity exceeds a set threshold, the micro-controller activates the dehumidification module to reduce the humidity. The dehumidification module includes a DC power supply and a PTC electric heating element, The direct current power supply is used to supply power to the PTC electric heating element. The PTC electric heating element is activated after receiving a signal from the microcontroller to generate heat and promote the drying and evaporation of moisture, thereby reducing the humidity. When the humidity detection module detects that the humidity is reduced to After the threshold is lowered, the microcontroller sends a signal to stop the PTC heating element.
有益效果Beneficial effect
与现有技术相比，本发明的有益效果是：本发明能够及时检测电机驱动器的输入电压、输出电流和线圈电阻，对电机驱动器进行硬件监测，并在出现故障时及时发出警报信号，检测及时性高，也能够检测电机驱动器外部环境的温湿度，保证电子元件处于合适的工作环境。Compared with the prior art, the beneficial effects of the present invention are: the present invention can detect the input voltage, output current and coil resistance of the motor driver in time, monitor the hardware of the motor driver, and send out an alarm signal in time when a fault occurs. With high performance, it can also detect the temperature and humidity of the external environment of the motor drive to ensure that the electronic components are in a suitable working environment.
附图说明Description of the drawings
图1为变频式电机驱动器的检测***的示意图。Figure 1 is a schematic diagram of a detection system for a variable frequency motor drive.
本发明的实施方式Embodiments of the present invention
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
    请参阅图1，本发明提供一种技术方案：变频式电机驱动器的检测***，包括微型控制器，所述微型控制器的信号输入端连接有电压检测模块、电流检测模块、温度检测模块、湿度检测模块，所述微型控制器的信号输出端连接有提示模块，所述微型控制器的信号输出端与电机驱动电路相连接，所述电流检测模块用于检测电机驱动器的输出电流，所述电压检测模块用于检测电机驱动器的输入电压，所述温度检测模块用于检测电机驱动器的外部环境的温度，所述湿度检测模块用于检测电机驱动器的外部环境的湿度。Please refer to FIG. 1, the present invention provides a technical solution: a detection system for a variable frequency motor drive includes a micro-controller, the signal input end of the micro-controller is connected with a voltage detection module, a current detection module, a temperature detection module, and a humidity A detection module, the signal output terminal of the microcontroller is connected with a prompt module, the signal output terminal of the microcontroller is connected with the motor drive circuit, and the current detection module is used to detect the output current of the motor driver. The detection module is used to detect the input voltage of the motor driver, the temperature detection module is used to detect the temperature of the external environment of the motor driver, and the humidity detection module is used to detect the humidity of the external environment of the motor driver.
    所述电压检测模块包括电压采样模块与电压比对模块，所述电压采样模块设置有多组，用于采样电机驱动器的输入电压信号，所述电压比对模块用于比对采样电压信号与预先设定的电压阈值，在出现计算结果超出阈值的情况时，向微型控制器发出提示信息，微型控制器通过提示模块发出警示信息，并控制电机驱动器停止工作。The voltage detection module includes a voltage sampling module and a voltage comparison module. The voltage sampling module is provided with multiple groups for sampling the input voltage signal of the motor driver. The voltage comparison module is used to compare the sampled voltage signal with The set voltage threshold value, when the calculation result exceeds the threshold value, a reminder message is sent to the microcontroller, and the microcontroller sends a warning message through the reminder module and controls the motor driver to stop working.
    所述电流检测模块包括电流采样模块与电流比对模块，所述电流采样模块设置有多组，用于采样电机驱动器的各相的输出电流，所述电流比对模块用于比对采样电流信号与预先设定的电流阈值，在出现计算结果超出阈值的情况时，向微型控制器发出提示信息，微型控制器通过提示模块发出警示信息，并控制电机驱动器停止工作。The current detection module includes a current sampling module and a current comparison module. The current sampling module is provided in multiple groups for sampling the output current of each phase of the motor driver. The current comparison module is used for comparing the sampled current signal. Compared with the preset current threshold, when the calculation result exceeds the threshold, it will send a reminder message to the microcontroller, and the microcontroller will send a warning message through the reminder module and control the motor driver to stop working.
    所述微型控制器连接有线圈电阻计算模块，所述线圈电阻计算模块用于根据电流监测模块的采样数据，计算电机线圈电阻值，并与预先设定的阈值进行比对，在出现计算结果超出阈值的情况时，向微型控制器发出提示信息，微型控制器通过提示模块发出警示信息，并控制电机驱动器停止工作。The micro-controller is connected with a coil resistance calculation module, which is used to calculate the motor coil resistance value according to the sampling data of the current monitoring module, and compare it with a preset threshold value. When the calculation result exceeds In the case of a threshold value, a reminder message is sent to the microcontroller, and the microcontroller sends a warning message through the reminder module and controls the motor driver to stop working.
    所述电流采样模块采样输出电流的具体步骤为：在电机驱动器输出预设占空比的0度相位电压时，检测电机驱动器的输出电流，得到0度相位下的输出电流；在电机驱动器输出预设占空比的120度相位电压时，检测电机驱动器的输出电流，得到120度相位下的输出电流；在电机驱动器输出预设占空比的240度相位电压时，检测电机驱动器的输出电流，得到240度相位下的输出电流。The specific steps for the current sampling module to sample the output current are: when the motor driver outputs a 0-degree phase voltage with a preset duty cycle, detect the output current of the motor driver to obtain the output current at the 0-degree phase; When the duty cycle of the 120-degree phase voltage is set, the output current of the motor driver is detected to obtain the output current at the 120-degree phase; when the motor driver outputs the 240-degree phase voltage of the preset duty cycle, the output current of the motor driver is detected, Obtain the output current at a phase of 240 degrees.
    所述湿度检测模块为HR202电阻型湿度传感器。The humidity detection module is an HR202 resistance humidity sensor.
    所述微型控制器还连接有微型风扇，所述温度检测模块检测到温度超过设定的阈值时，微型控制器向微型风扇发出信号，增大微型风扇的功率，提高气流流通量，增大散热效果，在温度检测模块检测到温度降低到阈值之下之后，微型控制器向微型风扇发出信号，将微型风扇的功率降低到正常模式。The micro-controller is also connected with a micro-fan, and when the temperature detection module detects that the temperature exceeds a set threshold, the micro-controller sends a signal to the micro-fan to increase the power of the micro-fan, increase air flow, and increase heat dissipation. As a result, after the temperature detection module detects that the temperature drops below the threshold, the microcontroller sends a signal to the micro fan to reduce the power of the micro fan to the normal mode.
    所述微型控制器还连接有除湿模块，在湿度检测模块检测到湿度超过设定的阈值时，微型控制器启动除湿模块，降低湿度，所述除湿模块包括直流电源和PTC电热元件，所述直流电源用于为PTC电热元件供电，所述PTC电热元件在收到微型控制器的信号后启动，产生热量，促使水分烘干蒸发，从而降低湿度，当湿度检测模块检测到湿度降低到阈值之下之后，微型控制器发出信号，使PTC电热元件停止工作。The micro-controller is also connected with a dehumidification module. When the humidity detection module detects that the humidity exceeds a set threshold, the micro-controller activates the dehumidification module to reduce the humidity. The dehumidification module includes a DC power supply and a PTC electric heating element. The power supply is used to supply power to the PTC electric heating element. The PTC electric heating element is activated after receiving a signal from the microcontroller to generate heat and promote the drying and evaporation of moisture, thereby reducing the humidity. When the humidity detection module detects that the humidity has dropped below the threshold After that, the microcontroller sends a signal to stop the PTC heating element.
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。For those skilled in the art, it is obvious that the present invention is not limited to the details of the foregoing exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the foregoing description, and therefore it is intended to fall within the claims. All changes within the meaning and scope of the equivalent elements of are included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。In addition, it should be understood that although this specification is described in accordance with the implementation manners, not each implementation manner only includes an independent technical solution. This narration in the specification is only for clarity, and those skilled in the art should regard the specification as a whole The technical solutions in the various embodiments can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (8)

  1. 变频式电机驱动器的检测***，包括微型控制器，其特征在于：所述微型控制器的信号输入端连接有电压检测模块、电流检测模块、温度检测模块、湿度检测模块，所述微型控制器的信号输出端连接有提示模块，所述微型控制器的信号输出端与电机驱动电路相连接，所述电流检测模块用于检测电机驱动器的输出电流，所述电压检测模块用于检测电机驱动器的输入电压，所述温度检测模块用于检测电机驱动器的外部环境的温度，所述湿度检测模块用于检测电机驱动器的外部环境的湿度。The detection system of the variable frequency motor drive includes a micro-controller, characterized in that: the signal input end of the micro-controller is connected with a voltage detection module, a current detection module, a temperature detection module, and a humidity detection module. The signal output terminal is connected with a prompt module, the signal output terminal of the microcontroller is connected with the motor drive circuit, the current detection module is used to detect the output current of the motor driver, and the voltage detection module is used to detect the input of the motor driver. The temperature detection module is used to detect the temperature of the external environment of the motor drive, and the humidity detection module is used to detect the humidity of the external environment of the motor drive.
  2. 根据权利要求1所述的变频式电机驱动器的检测***，其特征在于：所述电压检测模块包括电压采样模块与电压比对模块，所述电压采样模块设置有多组，用于采样电机驱动器的输入电压信号，所述电压比对模块用于比对采样电压信号与预先设定的电压阈值，在出现计算结果超出阈值的情况时，向微型控制器发出提示信息，微型控制器通过提示模块发出警示信息，并控制电机驱动器停止工作。The detection system of a variable frequency motor drive according to claim 1, wherein the voltage detection module includes a voltage sampling module and a voltage comparison module, and the voltage sampling module is provided with multiple groups for sampling the motor drive Input a voltage signal, the voltage comparison module is used to compare the sampled voltage signal with a preset voltage threshold, and when the calculation result exceeds the threshold, it sends a prompt message to the microcontroller, and the microcontroller sends it through the prompt module Warning information, and control the motor driver to stop working.
  3. 根据权利要求1所述的变频式电机驱动器的检测***，其特征在于：所述电流检测模块包括电流采样模块与电流比对模块，所述电流采样模块设置有多组，用于采样电机驱动器的各相的输出电流，所述电流比对模块用于比对采样电流信号与预先设定的电流阈值，在出现计算结果超出阈值的情况时，向微型控制器发出提示信息，微型控制器通过提示模块发出警示信息，并控制电机驱动器停止工作。The detection system of a variable frequency motor drive according to claim 1, wherein the current detection module includes a current sampling module and a current comparison module, and the current sampling module is provided with multiple groups for sampling the motor drive The output current of each phase. The current comparison module is used to compare the sampled current signal with a preset current threshold. When the calculation result exceeds the threshold, it sends a prompt message to the microcontroller, and the microcontroller passes the prompt The module sends out warning information and controls the motor driver to stop working.
  4. 根据权利要求1所述的变频式电机驱动器的检测***，其特征在于：所述微型控制器连接有线圈电阻计算模块，所述线圈电阻计算模块用于根据电流监测模块的采样数据，计算电机线圈电阻值，并与预先设定的阈值进行比对，在出现计算结果超出阈值的情况时，向微型控制器发出提示信息，微型控制器通过提示模块发出警示信息，并控制电机驱动器停止工作。The detection system of the variable frequency motor driver according to claim 1, wherein the micro-controller is connected with a coil resistance calculation module, and the coil resistance calculation module is used to calculate the motor coil based on the sampling data of the current monitoring module. The resistance value is compared with the preset threshold value. When the calculation result exceeds the threshold value, it will send a reminder to the microcontroller. The microcontroller sends a warning message through the reminder module and controls the motor driver to stop working.
  5. 根据权利要求3所述的变频式电机驱动器的检测***，其特征在于：所述电流采样模块采样输出电流的具体步骤为：在电机驱动器输出预设占空比的0度相位电压时，检测电机驱动器的输出电流，得到0度相位下的输出电流；在电机驱动器输出预设占空比的120度相位电压时，检测电机驱动器的输出电流，得到120度相位下的输出电流；在电机驱动器输出预设占空比的240度相位电压时，检测电机驱动器的输出电流，得到240度相位下的输出电流。The detection system of a variable frequency motor driver according to claim 3, wherein the specific steps of the current sampling module sampling the output current are: detecting the motor when the motor driver outputs a 0 degree phase voltage with a preset duty cycle The output current of the driver, obtain the output current at the 0 degree phase; when the motor driver outputs the 120-degree phase voltage with the preset duty ratio, detect the output current of the motor driver to obtain the output current at the 120 degree phase; in the motor driver output When the 240-degree phase voltage of the preset duty cycle is detected, the output current of the motor driver is detected to obtain the output current at the 240-degree phase.
  6. 根据权利要求1所述的变频式电机驱动器的检测***，其特征在于：所述湿度检测模块为HR202电阻型湿度传感器。The detection system of the variable frequency motor drive according to claim 1, wherein the humidity detection module is an HR202 resistance humidity sensor.
  7. 根据权利要求1所述的变频式电机驱动器的检测***，其特征在于：所述微型控制器还连接有微型风扇，所述温度检测模块检测到温度超过设定的阈值时，微型控制器向微型风扇发出信号，增大微型风扇的功率，提高气流流通量，增大散热效果，在温度检测模块检测到温度降低到阈值之下之后，微型控制器向微型风扇发出信号，将微型风扇的功率降低到正常模式。The detection system of the variable frequency motor driver according to claim 1, wherein the micro-controller is also connected with a micro-fan, and when the temperature detection module detects that the temperature exceeds a set threshold, the micro-controller The fan sends a signal to increase the power of the micro fan, increase the air flow, and increase the heat dissipation effect. After the temperature detection module detects that the temperature has dropped below the threshold, the micro controller sends a signal to the micro fan to reduce the power of the micro fan To normal mode.
  8. 根据权利要求1所述的变频式电机驱动器的检测***，其特征在于：所述微型控制器还连接有除湿模块，在湿度检测模块检测到湿度超过设定的阈值时，微型控制器启动除湿模块，降低湿度，所述除湿模块包括直流电源和PTC电热元件，所述直流电源用于为PTC电热元件供电，所述PTC电热元件在收到微型控制器的信号后启动，产生热量，促使水分烘干蒸发，从而降低湿度，当湿度检测模块检测到湿度降低到阈值之下之后，微型控制器发出信号，使PTC电热元件停止工作。The detection system of the variable frequency motor drive according to claim 1, wherein the micro-controller is also connected with a dehumidification module, and when the humidity detection module detects that the humidity exceeds a set threshold, the micro-controller activates the dehumidification module , To reduce the humidity, the dehumidification module includes a DC power supply and a PTC electric heating element, the DC power supply is used to supply power to the PTC electric heating element, the PTC electric heating element starts after receiving a signal from the microcontroller, generates heat, and promotes moisture drying Dry evaporation reduces the humidity. When the humidity detection module detects that the humidity drops below the threshold, the microcontroller sends a signal to stop the PTC heating element.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009159800A (en) * 2007-12-28 2009-07-16 Rohm Co Ltd Abnormality protecting apparatus
CN203965581U (en) * 2014-04-30 2014-11-26 广东威灵电机制造有限公司 The failure detector of direct current generator Drive and Control Circuit
CN204242841U (en) * 2014-08-27 2015-04-01 西安华鑫电力设备有限责任公司 A kind of electric motor operating mechanism
CN106646192A (en) * 2016-11-25 2017-05-10 广州周立功单片机科技有限公司 Self-checking method and system for motor driver hardware
CN106655090A (en) * 2017-02-24 2017-05-10 广东威灵电机制造有限公司 Protective apparatus of motor driver and motor
CN107091989A (en) * 2017-06-16 2017-08-25 英特尔产品（成都）有限公司 Motor driver verifies device
KR20180111371A (en) * 2017-03-31 2018-10-11 (주)모토닉 Protection circuit and motor driver with the same
CN110350844A (en) * 2018-04-04 2019-10-18 发那科株式会社 The abnormal heating detection method of motor drive and motor drive

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009159800A (en) * 2007-12-28 2009-07-16 Rohm Co Ltd Abnormality protecting apparatus
CN203965581U (en) * 2014-04-30 2014-11-26 广东威灵电机制造有限公司 The failure detector of direct current generator Drive and Control Circuit
CN204242841U (en) * 2014-08-27 2015-04-01 西安华鑫电力设备有限责任公司 A kind of electric motor operating mechanism
CN106646192A (en) * 2016-11-25 2017-05-10 广州周立功单片机科技有限公司 Self-checking method and system for motor driver hardware
CN106655090A (en) * 2017-02-24 2017-05-10 广东威灵电机制造有限公司 Protective apparatus of motor driver and motor
KR20180111371A (en) * 2017-03-31 2018-10-11 (주)모토닉 Protection circuit and motor driver with the same
CN107091989A (en) * 2017-06-16 2017-08-25 英特尔产品（成都）有限公司 Motor driver verifies device
CN110350844A (en) * 2018-04-04 2019-10-18 发那科株式会社 The abnormal heating detection method of motor drive and motor drive

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