WO2018023897A1 - Ground detection device for locomotive control loop, and control method thereof - Google Patents
Ground detection device for locomotive control loop, and control method thereof Download PDFInfo
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- WO2018023897A1 WO2018023897A1 PCT/CN2016/106727 CN2016106727W WO2018023897A1 WO 2018023897 A1 WO2018023897 A1 WO 2018023897A1 CN 2016106727 W CN2016106727 W CN 2016106727W WO 2018023897 A1 WO2018023897 A1 WO 2018023897A1
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- 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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
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- 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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2836—Fault-finding or characterising
- G01R31/2839—Fault-finding or characterising using signal generators, power supplies or circuit analysers
Definitions
- the present invention relates to a grounding detecting device, and more particularly to a locomotive control loop grounding detecting device and a control method thereof.
- the commonly used locomotive control loop voltages are 74V and 110V.
- the short circuit of the control loop voltage to the ground may directly affect the driving safety. Whether the positive and negative voltages of the control loop are balanced to the ground, and the EMC environment impact on the electronic equipment of the locomotive. It is also large, so the new model is equipped with a grounding detection device for the control circuit for corresponding protection.
- the principle of the grounding detection device currently used is to drive the relay or the diaphragm to isolate the output fault signal by using the differential pressure change of the grounding point, and the voltage comparison is realized by a comparison circuit built by a Zener diode or an operational amplifier, but such a circuit
- the voltage requirements of the power supply are relatively high, and different control voltages require different matching circuits for detection, poor versatility, low precision, and unquantified output information.
- the present invention is directed to solving the above drawbacks, and provides a locomotive control loop grounding detecting device.
- the locomotive control loop grounding detecting device comprises an MCU single chip microcomputer, a power supply module, an attenuation circuit, an LED indicator, a protocol converter and an isolated output;
- the input end of the power module is connected to an input signal, and the input signal includes a control power source, a control power source, and a ground;
- control power source is connected in parallel to the balance resistor R1, and the control power supply is connected in parallel with the balance resistor R2, and the resistance of the balance resistor R 1 and the balance resistor R2 is set to 10K;
- the power module converts the high voltage control power into a 5V low voltage power supply, and is connected to the MCU microcontroller; [0009] the MCU is connected to two attenuators connected to the MCU microcontroller; [0010] The MCU is also connected with a button, an LED indicator, an isolated output, and a protocol converter, and the protocol converter is connected to the RS485 device;
- the LED indicator shows the voltage balance state.
- the orange light of 7 and the red light of the number 1 and 8, the LED indicator is directly driven by the 10 ports of the MCU microcontroller, and the LED indicator adopts the common male connection method.
- the voltage attenuating circuit is further comprised of an operational amplifier and a resistor having an attenuation ratio of 1:50.
- the method further comprises: first, using a tool to confirm that the locomotive control power supply voltage is normal, and pressing the button to power the ground detecting device, when two LED points on both sides of the LED indicator If it is bright, the button can be released.
- the control power supply voltage of the current locomotive has been sampled by the MCU and registered in the EEROM.
- the MCU microcontroller collects U0 and U1 voltage data at a sampling frequency of 100 Hz, and obtains a real voltage value through conversion, and obtains a voltage value through an average value filtering algorithm, and the actual operating frequency is 10 Hz.
- the drive 10 In the case of a severely low voltage fault, a negative-end unbalanced 4-level fault, and a positive-end unbalanced 4-level fault, the drive 10 outputs a fault signal.
- the beneficial effects of the present invention are:
- the locomotive control loop grounding detecting device has a simple structure, and can be applied to all control loop voltage grounding and balance detection between 45 and 120V.
- 1 is a schematic view showing the structure of the present invention.
- FIG. 1 is a schematic structural view of the present invention, which includes an MCU microcontroller, a power module, an attenuation circuit, an LED indicator, a protocol converter, and an isolated output; an input terminal of the power module is connected to an input signal, and the input signal includes a control power supply.
- control power supply is connected to the ground in parallel with the balance resistor Rl, control power supply is connected to the ground in parallel with the balance resistor R2, the balance resistor R1 and the balance resistor R2 resistance is set to 10K;
- the power module converts the high-voltage control power into a 5V low-voltage power supply and connects the M CU microcontroller; the MCU is connected to two attenuators to connect the MCU microcontroller; the MCU is also connected with a button, an LED indicator, an isolated output, and a protocol converter.
- the protocol converter is connected to the RS485 device; the LED indicator shows the voltage balance status.
- LED indicators There are 8 LED indicators, arranged from the middle to the two sides, respectively, the green lights with numbers 4 and 5, and the yellow lights with numbers 3 and 6.
- the number is 2, 7 orange, the number is 1, 8 red, the LED indicator is MCU Direct drive 10, LED indicator using common anode connection.
- the overall structure uses the MCU single-chip as the main processor, and the voltage signal of different measuring points is sampled by the 10-bit AD channel provided by the MCU single-chip microcomputer. After comprehensive judgment, the LED indicator is displayed to display the voltage balance state, and the output is not isolated by the diaphragm. Balance or ground signal to other equipment, or through RS485 communication, send voltage and fault information to other RS485 equipment, communication using MODBUS-RTU protocol;
- the device can be applied to all control loop voltage grounding and balance detection between 45 and 120V; [0033]
- the input signal includes a control power supply positive, a control power supply negative, and a ground (locomotive casing);
- control power source is integrated into the balance resistor R1 between the ground, and the control power source is integrated into the balance resistor between the ground and the ground.
- the resistance values of R1 and R2 are preset to 10K, and the specific values are matched according to the actual conditions of each type of locomotive;
- the high-voltage control power is converted into a 5 V low-voltage power supply through an isolated power module, and the subsequent circuit is powered, and the power module input range is 45 ⁇ 120V;
- the sampling voltage is less than or equal to 120V, and the AD input voltage range of the MCU microcontroller is 0 ⁇ 2.56V, so the voltage attenuation circuit needs to be added in the middle of the voltage sampling, and the attenuation circuit is composed of an operational amplifier and a resistor, and the attenuation ratio is 1:50;
- the MCU MCU is used as the main controller, and the voltage signals U0 and U1 are attenuated by the two 10-bit AD samples.
- U0 is the voltage of the control power supply
- U1 is the negative voltage of the ground control power supply, then the control power supply is directly opposite to the ground.
- the function of the button is to initialize the power supply voltage parameter. When the control power supply loop is normal, press the button and then power on.
- the MCU MCU will record the control power supply voltage U0 of this ⁇ as the voltage reference parameter;
- the LED indicator shows the voltage balance state.
- the orange light displayed, the red light displayed by the numbers 1, 8 are used to represent different balance states, which change from green to red, indicating the severity.
- the LED indicator is directly driven by the MCU's 10 ports, and the LED indicator is commonly used. Law
- the device can also output a fault signal with unbalanced voltage or grounding.
- the output is driven by the optocoupler and the MOS tube.
- the device can also output specific voltage data and fault judgment information as well as other custom functions, through the RS
- MCU microcontroller itself comes with RS232 serial interface, in order to match the RS485 interface used by most devices, by adding RS232 to RS485 protocol conversion chip implementation.
- the control method of the locomotive control loop grounding detection device is:
- the tool is used to confirm that the power supply voltage of the locomotive is normal.
- the grounding detection device is energized.
- the button can be released, and the control power supply voltage of the current locomotive has been
- the MCU microcontroller samples and registers the data into the EEROM;
- the MCU MCU collects U0 and Ul voltage data at a sampling frequency of 100 Hz, and obtains a real voltage value through conversion, and obtains a voltage value through an average value filtering algorithm, and the actual working frequency is 10 Hz.
- the drive 10 In the case of a severely low voltage fault, a negative-end unbalanced 4-level fault, and a positive-end unbalanced 4-level fault, the drive 10 outputs a fault signal.
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Abstract
The present invention relates to the field of internal combustion locomotives, and discloses a ground detection device for a locomotive control loop, and control method thereof. The device comprises a microcontroller unit (MCU), a power supply module, an attenuator circuit, an LED indicator, a protocol converter, and an isolated output. The ground detection device for a locomotive control loop of the present invention has a simple structure, and is applicable to ground detection and balance detection for the voltage of all control loops within the range of 45-120 V.
Description
机车控制回路接地检测装置及其控制方法 技术领域 Locomotive control loop grounding detecting device and control method thereof
[0001] 本发明涉及一种接地检测装置, 尤其涉及一种机车控制回路接地检测装置及其 控制方法。 [0001] The present invention relates to a grounding detecting device, and more particularly to a locomotive control loop grounding detecting device and a control method thereof.
背景技术 Background technique
[0002] 现在常用的机车控制回路电压有 74V及 110V两种, 控制回路电压对地短路可能 直接影响行车安全, 同吋控制回路正负电压对地是否平衡, 对机车各电子设备 的 EMC环境影响也较大, 故新车型都安装了控制回路的接地检测装置做相应保 护。 [0002] The commonly used locomotive control loop voltages are 74V and 110V. The short circuit of the control loop voltage to the ground may directly affect the driving safety. Whether the positive and negative voltages of the control loop are balanced to the ground, and the EMC environment impact on the electronic equipment of the locomotive. It is also large, so the new model is equipped with a grounding detection device for the control circuit for corresponding protection.
[0003] 现在使用的接地检测装置的原理是利用接地点的压差变化驱动继电器或光藕隔 离输出故障信号, 电压的比较利用稳压二极管或运算放大器等搭建的比较电路 实现, 但这种电路对电源的电压要求较高, 不同的控制电压需要不同的匹配电 路实现检测, 通用性差, 精度低, 输出信息也未量化。 [0003] The principle of the grounding detection device currently used is to drive the relay or the diaphragm to isolate the output fault signal by using the differential pressure change of the grounding point, and the voltage comparison is realized by a comparison circuit built by a Zener diode or an operational amplifier, but such a circuit The voltage requirements of the power supply are relatively high, and different control voltages require different matching circuits for detection, poor versatility, low precision, and unquantified output information.
技术问题 technical problem
[0004] 本发明旨在解决上述缺陷, 提供一种机车控制回路接地检测装置。 The present invention is directed to solving the above drawbacks, and provides a locomotive control loop grounding detecting device.
问题的解决方案 Problem solution
技术解决方案 Technical solution
[0005] 本发明解决其技术问题所采用的技术方案是: 这种机车控制回路接地检测装置 包括一个 MCU单片机、 电源模块、 衰减电路、 LED指示器、 协议转换器和隔离 输出; [0005] The technical solution adopted by the present invention to solve the technical problem thereof is: The locomotive control loop grounding detecting device comprises an MCU single chip microcomputer, a power supply module, an attenuation circuit, an LED indicator, a protocol converter and an isolated output;
[0006] 电源模块的输入端连接输入信号, 输入信号包括控制电源正、 控制电源负、 接 地; [0006] The input end of the power module is connected to an input signal, and the input signal includes a control power source, a control power source, and a ground;
[0007] 控制电源正对地之间并联接入平衡电阻 R1, 控制电源负对地之间并联接入平衡 电阻 R2, 平衡电阻 R 1与平衡电阻 R2的阻值设为 10K; [0007] The control power source is connected in parallel to the balance resistor R1, and the control power supply is connected in parallel with the balance resistor R2, and the resistance of the balance resistor R 1 and the balance resistor R2 is set to 10K;
[0008] 电源模块将高电压的控制电源转换为 5V低压电源, 并且连接 MCU单片机; [0009] MCU单片机上连接两个衰减器连接 MCU单片机;
[0010] MCU单片机上还连接按钮、 LED指示器、 隔离输出以及协议转换器, 协议转换 器连接 RS485设备; [0008] The power module converts the high voltage control power into a 5V low voltage power supply, and is connected to the MCU microcontroller; [0009] the MCU is connected to two attenuators connected to the MCU microcontroller; [0010] The MCU is also connected with a button, an LED indicator, an isolated output, and a protocol converter, and the protocol converter is connected to the RS485 device;
[0011] LED指示器实吋显示电压平衡状态, 共有 8个 LED指示灯, 从中间往两边排列 , 分别是数字为 4、 5的绿色灯, 数字为 3、 6的黄色灯, 数字为 2、 7的橙色灯, 数字为 1、 8的红色灯, LED指示器由 MCU单片机的 10口直接驱动, LED指示器 采用共阳接法。 [0011] The LED indicator shows the voltage balance state. There are 8 LED indicators, arranged from the middle to the two sides, respectively, the green lights with numbers 4 and 5, the yellow lights with numbers 3 and 6, the number is 2. The orange light of 7 and the red light of the number 1 and 8, the LED indicator is directly driven by the 10 ports of the MCU microcontroller, and the LED indicator adopts the common male connection method.
[0012] 根据本发明的另一个实施例, 进一步包括所述电压衰减电路由运放及电阻组成 , 其衰减比为 1:50。 [0012] According to another embodiment of the present invention, the voltage attenuating circuit is further comprised of an operational amplifier and a resistor having an attenuation ratio of 1:50.
[0013] 根据本发明的另一个实施例, 进一步包括该方法包括, 首先利用工具确认机车 控制电源电压正常, 按住按钮后给本接地检测装置通电, 当 LED指示器两侧的两 个 LED点亮, 则可以松口按钮, 当前机车的控制电源电压已被 MCU单片机采样 , 并寄存器至 EEROM内; [0013] According to another embodiment of the present invention, the method further comprises: first, using a tool to confirm that the locomotive control power supply voltage is normal, and pressing the button to power the ground detecting device, when two LED points on both sides of the LED indicator If it is bright, the button can be released. The control power supply voltage of the current locomotive has been sampled by the MCU and registered in the EEROM.
[0014] 正常使用后, MCU单片机以 100Hz的采样频率采集 U0及 U1电压数据, 经过换 算得到真实的电压值, 通过平均值滤波算法, 得到电压值, 实际工作频率 10Hz [0014] After normal use, the MCU microcontroller collects U0 and U1 voltage data at a sampling frequency of 100 Hz, and obtains a real voltage value through conversion, and obtains a voltage value through an average value filtering algorithm, and the actual operating frequency is 10 Hz.
[0015] 当采样到的 U0与初次记录的 U0相差 15%以上吋, 报电压偏低故障; [0015] When the sampled U0 is different from the first recorded U0 by more than 15%, the voltage is reported to be low;
[0016] 当采样到的 U0与初次记录的 U0相差 35%以上吋, 报电压严重偏低故障; [0016] When the sampled U0 differs from the initially recorded U0 by more than 35%, the reported voltage is severely low;
[0017] 当 U1/U0在 50±5<¾以内吋, LED不亮, 无故障输出; [0017] When U1/U0 is within 50±5<3⁄4, the LED is not lit and there is no fault output;
[0018] 当 SSy^Ul/lKKAS^吋, LED指示灯上数字 4的点亮, 报负端不平衡 1级故障; [0019] 当 Sy^Ul/lKKSS^吋, LED指示灯上数字 3、 4点亮, 报负端不平衡 2级故障; [0020] 当 lSy^Ul/LKk S^吋, LED指示灯上数字 2、 3、 4点亮, 报负端不平衡 3级故 障; [0018] When SSy^Ul/lKKAS^吋, the number 4 on the LED indicator lights up, and the negative end is unbalanced level 1 fault; [0019] When Sy^Ul/lKKSS^吋, the LED indicator number is 3, 4 lit, report negative end unbalanced level 2 fault; [0020] When lSy^Ul/LKk S^吋, the LEDs on the LEDs 2, 3, 4 are lit, and the negative end is unbalanced with 3 levels of faults;
[0021] 当 Ul/U0<15<¾吋, LED指示灯上数字 1、 2、 3、 4点亮, 报负端不平衡 4级故障 及负端接地故障; [0021] When Ul/U0<15<3⁄4吋, the numbers 1, 2, 3, and 4 on the LED indicator light up, and the negative end is unbalanced and the fault is faulty.
[0022] 当 SS^ Ul/lK eS^吋, LED指示灯上数字 5点亮, 报正端不平衡 1级故障; [0023] 当 eSy^Ul/LK S^吋, LED指示灯上数字 5、 6点亮, 报正端不平衡 2级故障; [0024] 当 Sy^Ul/lK SS^吋, LED指示灯上数字 5、 6、 7点亮, 报正端不平衡 3级故 障;
[0025] 当 Ul/U0>85<¾吋, LED指示灯上数字 5、 6、 7、 8点亮, 报正端不平衡 4级故障 及正端接地故障; [0022] When SS^ Ul/lK eS^吋, the number 5 on the LED indicator lights up, and the positive end is unbalanced level 1 fault; [0023] When eSy^Ul/LK S^吋, the LED indicator number is 5 6 is lit, and the positive end is unbalanced with level 2 fault; [0024] When Sy^Ul/lK SS^吋, the numbers 5, 6, and 7 on the LED indicator light up, and the positive end unbalanced level 3 fault is reported; [0025] When Ul/U0>85<3⁄4吋, the numbers 5, 6, 7, and 8 on the LED indicator light up, and the positive end unbalanced level 4 fault and the positive end ground fault are reported;
[0026] 在报电压严重偏低故障、 负端不平衡 4级故障及正端不平衡 4级故障吋, 驱动 10 输出故障信号。 [0026] In the case of a severely low voltage fault, a negative-end unbalanced 4-level fault, and a positive-end unbalanced 4-level fault, the drive 10 outputs a fault signal.
发明的有益效果 Advantageous effects of the invention
有益效果 Beneficial effect
[0027] 本发明的有益效果是: 这种机车控制回路接地检测装置的结构简单, 可以适用 45~120V之间的所有控制回路电压接地及平衡检测。 [0027] The beneficial effects of the present invention are: The locomotive control loop grounding detecting device has a simple structure, and can be applied to all control loop voltage grounding and balance detection between 45 and 120V.
对附图的简要说明 Brief description of the drawing
附图说明 DRAWINGS
[0028] 下面结合附图和实施例对本发明进一步说明。 [0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0029] 图 1是本发明的结构示意图。 1 is a schematic view showing the structure of the present invention.
[0030] 图 1是本发明的结构示意图, 图中包括一个 MCU单片机、 电源模块、 衰减电路 、 LED指示器、 协议转换器和隔离输出; 电源模块的输入端连接输入信号, 输入 信号包括控制电源正、 控制电源负、 接地; 控制电源正对地之间并联接入平衡 电阻 Rl, 控制电源负对地之间并联接入平衡电阻 R2, 平衡电阻 R1与平衡电阻 R2 的阻值设为 10K; 电源模块将高电压的控制电源转换为 5V低压电源, 并且连接 M CU单片机; MCU单片机上连接两个衰减器连接 MCU单片机; MCU单片机上还 连接按钮、 LED指示器、 隔离输出以及协议转换器, 协议转换器连接 RS485设备 ; LED指示器实吋显示电压平衡状态, 共有 8个 LED指示灯, 从中间往两边排列 , 分别是数字为 4、 5的绿色灯, 数字为 3、 6的黄色灯, 数字为 2、 7的橙色灯, 数字为 1、 8的红色灯, LED指示器由 MCU单片机的 10口直接驱动, LED指示器 采用共阳接法。 1 is a schematic structural view of the present invention, which includes an MCU microcontroller, a power module, an attenuation circuit, an LED indicator, a protocol converter, and an isolated output; an input terminal of the power module is connected to an input signal, and the input signal includes a control power supply. Positive, control power supply negative, grounding; control power supply is connected to the ground in parallel with the balance resistor Rl, control power supply is connected to the ground in parallel with the balance resistor R2, the balance resistor R1 and the balance resistor R2 resistance is set to 10K; The power module converts the high-voltage control power into a 5V low-voltage power supply and connects the M CU microcontroller; the MCU is connected to two attenuators to connect the MCU microcontroller; the MCU is also connected with a button, an LED indicator, an isolated output, and a protocol converter. The protocol converter is connected to the RS485 device; the LED indicator shows the voltage balance status. There are 8 LED indicators, arranged from the middle to the two sides, respectively, the green lights with numbers 4 and 5, and the yellow lights with numbers 3 and 6. The number is 2, 7 orange, the number is 1, 8 red, the LED indicator is MCU Direct drive 10, LED indicator using common anode connection.
[0031] 整体结构利用 MCU单片机做主处理器, 通过 MCU单片机自带的 10位 AD通道采 样不同测点的电压信号, 综合判断后驱动 LED指示器显示电压平衡状态, 同吋通 过光藕隔离输出不平衡或接地信号给其他设备, 或通过 RS485通讯, 发送电压及 故障信息给其他 RS485设备, 通讯使用 MODBUS-RTU协议; [0031] The overall structure uses the MCU single-chip as the main processor, and the voltage signal of different measuring points is sampled by the 10-bit AD channel provided by the MCU single-chip microcomputer. After comprehensive judgment, the LED indicator is displayed to display the voltage balance state, and the output is not isolated by the diaphragm. Balance or ground signal to other equipment, or through RS485 communication, send voltage and fault information to other RS485 equipment, communication using MODBUS-RTU protocol;
[0032] 本装置可以适用 45~120V之间的所有控制回路电压接地及平衡检测;
[0033] 输入信号包括控制电源正、 控制电源负、 接地 (机车外壳) ; [0032] The device can be applied to all control loop voltage grounding and balance detection between 45 and 120V; [0033] The input signal includes a control power supply positive, a control power supply negative, and a ground (locomotive casing);
[0034] 控制电源正对地之间并入平衡电阻 R1, 控制电源负对地之间并入平衡电阻 R2 [0034] The control power source is integrated into the balance resistor R1 between the ground, and the control power source is integrated into the balance resistor between the ground and the ground.
, R1与 R2的阻值预设为 10K, 具体值根据各型机车实际情况匹配; The resistance values of R1 and R2 are preset to 10K, and the specific values are matched according to the actual conditions of each type of locomotive;
[0035] 通过一隔离电源模块将高电压的控制电源转换为 5 V低压电源, 给后续电路供电 , 电源模块输入范围 45~120V; [0035] The high-voltage control power is converted into a 5 V low-voltage power supply through an isolated power module, and the subsequent circuit is powered, and the power module input range is 45~120V;
[0036] 采样电压小于等于 120V, 而 MCU单片机的 AD输入电压范围为 0~2.56V, 故电 压采样中间需要加电压衰减电路, 衰减电路由运放及电阻组成, 衰减比为 1:50; [0036] The sampling voltage is less than or equal to 120V, and the AD input voltage range of the MCU microcontroller is 0~2.56V, so the voltage attenuation circuit needs to be added in the middle of the voltage sampling, and the attenuation circuit is composed of an operational amplifier and a resistor, and the attenuation ratio is 1:50;
[0037] MCU单片机做为主控制器, 通过两路 10位 AD采样衰减后的电压信号 U0与 Ul, U0为控制电源的电压, U1为地对控制电源负的电压, 则控制电源正对地的电压 U2 = U0-U1, 如果 MCU单片机自带的基准电压源为 2.56V, 贝 UUO = [0037] The MCU MCU is used as the main controller, and the voltage signals U0 and U1 are attenuated by the two 10-bit AD samples. U0 is the voltage of the control power supply, and U1 is the negative voltage of the ground control power supply, then the control power supply is directly opposite to the ground. The voltage U2 = U0-U1, if the MCU microcontroller comes with a reference voltage of 2.56V, Bay UUO =
50x(2.56xAD0/1024) = ADO/8, Ul = 50x(2.56xAD 1/1024) = AD 1/8; 50x(2.56xAD0/1024) = ADO/8, Ul = 50x (2.56xAD 1/1024) = AD 1/8;
[0038] 按钮的作用是初始化电源电压参数, 当控制电源回路正常吋, 按下按钮再上电 [0038] The function of the button is to initialize the power supply voltage parameter. When the control power supply loop is normal, press the button and then power on.
, MCU单片机会记录下此吋的控制电源电压 U0做为电压参照参数; The MCU MCU will record the control power supply voltage U0 of this 做 as the voltage reference parameter;
[0039] LED指示器实吋显示电压平衡状态, 共有 8个 LED指示灯, 从中间往两边排列 , 分别是数字 4、 5显示的绿色灯、 数字 3、 6显示的黄色灯、 数字 2、 7显示的橙 色灯、 数字 1、 8显示的红色灯, 用以代表不同的平衡状态, 由绿色向红色变化 , 表示严重程度, LED指示器由 MCU的 10口直接驱动, LED指示器采用共阳接 法; [0039] The LED indicator shows the voltage balance state. There are 8 LED indicators, arranged from the middle to the two sides, respectively, the green light of the numbers 4 and 5, the yellow light of the numbers 3 and 6, the numbers 2, 7 The orange light displayed, the red light displayed by the numbers 1, 8 are used to represent different balance states, which change from green to red, indicating the severity. The LED indicator is directly driven by the MCU's 10 ports, and the LED indicator is commonly used. Law
[0040] 本装置也可以输出一路电压不平衡或接地的故障信号, 为了增加带载能力, 输 出通过光耦及 MOS管隔离驱动; [0040] The device can also output a fault signal with unbalanced voltage or grounding. In order to increase the load capacity, the output is driven by the optocoupler and the MOS tube.
[0041] 本装置还可以输出具体电压数据及故障判断信息以及其他自定义功能, 通过 RS[0041] The device can also output specific voltage data and fault judgment information as well as other custom functions, through the RS
485接口, 使用 MODBUS-RTU协议传输, MCU单片机本身自带 RS232的串行接 口, 为了匹配大部分设备使用的 RS485接口, 通过增加 RS232转 RS485的协议转 换芯片实现。 485 interface, using MODBUS-RTU protocol transmission, MCU microcontroller itself comes with RS232 serial interface, in order to match the RS485 interface used by most devices, by adding RS232 to RS485 protocol conversion chip implementation.
[0042] 机车控制回路接地检测装置的控制方法为: [0042] The control method of the locomotive control loop grounding detection device is:
[0043] 首先利用工具确认机车控制电源电压正常, 按住按钮后给本接地检测装置通电 , 当 LED指示器两侧的两个 LED点亮, 则可以松口按钮, 当前机车的控制电源电 压已被 MCU单片机采样, 并将数据寄存至 EEROM内;
[0044] 正常使用后, MCU单片机以 100Hz的采样频率采集 U0及 Ul电压数据, 经过换 算得到真实的电压值, 通过平均值滤波算法, 得到电压值, 实际工作频率 10Hz [0043] Firstly, the tool is used to confirm that the power supply voltage of the locomotive is normal. When the button is pressed, the grounding detection device is energized. When the two LEDs on both sides of the LED indicator are lit, the button can be released, and the control power supply voltage of the current locomotive has been The MCU microcontroller samples and registers the data into the EEROM; [0044] After normal use, the MCU MCU collects U0 and Ul voltage data at a sampling frequency of 100 Hz, and obtains a real voltage value through conversion, and obtains a voltage value through an average value filtering algorithm, and the actual working frequency is 10 Hz.
[0045] 当采样到的 U0与初次记录的 U0相差 15%以上吋, 报电压偏低故障; [0045] When the sampled U0 is more than 15% different from the first recorded U0, the voltage is reported to be low;
[0046] 当采样到的 U0与初次记录的 U0相差 35%以上吋, 报电压严重偏低故障; [0046] When the sampled U0 differs from the first recorded U0 by more than 35%, the reported voltage is severely low;
[0047] 当 U1/U0在 50±5<¾以内吋, LED不亮, 无故障输出; [0047] When U1/U0 is within 50±5<3⁄4, the LED is not lit and there is no fault output;
[0048] 当 SSy^Ul/lKKAS^吋, LED指示灯上数字 4的点亮, 报负端不平衡 1级故障; [0049] 当 Sy^Ul/lKKSS^吋, LED指示灯上数字 3、 4点亮, 报负端不平衡 2级故障; [0050] 当 lSy^Ul/LKk S^吋, LED指示灯上数字 2、 3、 4点亮, 报负端不平衡 3级故 障; [0048] When SSy^Ul/lKKAS^吋, the number 4 on the LED indicator lights up, and the negative end is unbalanced level 1 fault; [0049] When Sy^Ul/lKKSS^吋, the LED indicator number is 3. 4 lit, report negative end unbalanced level 2 fault; [0050] When lSy^Ul/LKk S^吋, the LEDs on the LEDs 2, 3, 4 are lit, and the negative end is unbalanced level 3 fault;
[0051] 当 Ul/U0<15<¾吋, LED指示灯上数字 1、 2、 3、 4点亮, 报负端不平衡 4级故障 及负端接地故障; [0051] When Ul/U0<15<3⁄4吋, the numbers 1, 2, 3, and 4 on the LED indicator light up, and the negative end is unbalanced and the fault is faulty.
[0052] 当 SS^ Ul/lK eS^吋, LED指示灯上数字 5点亮, 报正端不平衡 1级故障; [0053] 当 esy^Ul/LK S^吋, LED指示灯上数字 5、 6点亮, 报正端不平衡 2级故障; [0054] 当 Sy^Ul/lK SS^吋, LED指示灯上数字 5、 6、 7点亮, 报正端不平衡 3级故 障; [0052] When SS^ Ul/lK eS^吋, the number 5 on the LED indicator lights up, and the positive end is unbalanced with a level 1 fault; [0053] When esy^Ul/LK S^吋, the LED indicator number is 5 6 is lit, and the positive end is unbalanced with level 2 fault; [0054] When Sy^Ul/lK SS^吋, the numbers 5, 6, and 7 on the LED indicator light up, and the positive end is unbalanced for 3 levels;
[0055] 当 Ul/U0>85<¾吋, LED指示灯上数字 5、 6、 7、 8点亮, 报正端不平衡 4级故障 及正端接地故障; [0055] When Ul/U0>85<3⁄4吋, the numbers 5, 6, 7, and 8 on the LED indicator light up, and the positive end unbalanced level 4 fault and the positive end ground fault are reported;
[0056] 在报电压严重偏低故障、 负端不平衡 4级故障及正端不平衡 4级故障吋, 驱动 10 输出故障信号。
[0056] In the case of a severely low voltage fault, a negative-end unbalanced 4-level fault, and a positive-end unbalanced 4-level fault, the drive 10 outputs a fault signal.
Claims
[权利要求 1] 一种机车控制回路接地检测装置, 其特征在于: 包括一个 MCU单片 机、 电源模块、 衰减电路、 LED指示器、 协议转换器和隔离输出; 所述电源模块的输入端连接输入信号, 输入信号包括控制电源正、 控制电源负、 接地, 控制电源正与控制电源负之间的电压为 U0, 控 制电源负与接地的电压为 Ul, 控制电源正与接地的电压为 U2; [Claim 1] A locomotive control loop grounding detecting device, comprising: an MCU single chip microcomputer, a power supply module, an attenuation circuit, an LED indicator, a protocol converter, and an isolated output; wherein an input end of the power module is connected to an input signal The input signal includes the control power supply positive, the control power supply negative, the grounding, the voltage between the control power supply and the control power supply negative is U0, the control power supply negative and ground voltage is Ul, and the control power supply positive and ground voltage is U2;
所述控制电源正对地之间并联接入平衡电阻 R1, 控制电源负对地之 间并联接入平衡电阻 R2, 平衡电阻 R1与平衡电阻 R2的阻值设为 10K 所述电源模块将高电压的控制电源转换为 5 V低压电源, 并且连接 MC U单片机; The control power source is connected in parallel to the balance resistor R1, and the control power source is connected in parallel to the ground to connect the balance resistor R2, and the resistance of the balance resistor R1 and the balance resistor R2 is set to 10K. The power module will be high voltage. The control power is converted to a 5 V low voltage power supply and connected to the MC U microcontroller;
所述 MCU单片机上连接两个衰减器连接 MCU单片机; Connecting two attenuators to the MCU microcontroller on the MCU;
所述 MCU单片机上还连接按钮、 LED指示器、 隔离输出以及协议转 换器, 协议转换器连接 RS485设备; The MCU is further connected with a button, an LED indicator, an isolated output, and a protocol converter, and the protocol converter is connected to the RS485 device;
所述 LED指示器实吋显示电压平衡状态, 共有 8个 LED指示灯, 从中 间往两边排列, 分别是数字为 4、 5的绿色灯, 数字为 3、 6的黄色灯, 数字为 2、 7的橙色灯, 数字为 1、 8的红色灯, LED指示器由 MCU单 片机的 10口直接驱动, LED指示器采用共阳接法。 The LED indicator shows the voltage balance state. There are 8 LED indicators, arranged from the middle to the two sides, respectively, the green lights with numbers 4 and 5, the yellow lights with numbers 3 and 6, the numbers are 2, 7 The orange light, the number is 1, 8 red light, the LED indicator is directly driven by the 10 ports of the MCU microcontroller, and the LED indicator adopts the common male connection method.
[权利要求 2] 如权利要求 1所述的机车控制回路接地检测装置, 其特征在于: 所述 电压衰减电路由运放及电阻组成, 其衰减比为 1:50。 [Claim 2] The locomotive control loop grounding detecting device according to claim 1, wherein the voltage attenuating circuit is composed of an operational amplifier and a resistor, and has an attenuation ratio of 1:50.
[权利要求 3] 如权利要求 1所述的机车控制回路接地检测装置的控制方法, 其特征 在于: 该方法包括, 首先利用工具确认机车控制电源电压正常, 按住 按钮后给本接地检测装置通电, 当 LED指示器两侧的两个 LED点亮, 则可以松口按钮, 当前机车的控制电源电压已被 MCU单片机采样, 并寄存器至 EEROM内; [Claim 3] The control method of the locomotive control loop grounding detecting device according to claim 1, wherein the method comprises: first confirming that the locomotive control power supply voltage is normal by using a tool, and energizing the ground detecting device after pressing a button When the two LEDs on both sides of the LED indicator are lit, the button can be released. The control power supply voltage of the current locomotive has been sampled by the MCU and registered in the EEROM.
正常使用后, MCU单片机以 100Hz的采样频率采集 U0及 U1电压数据 , 经过换算得到真实的电压值, 通过平均值滤波算法, 得到电压值, 实际工作频率 10Hz;
当采样到的 U0与初次记录的 U0相差 15%以上吋, 报电压偏低故障; 当采样到的 U0与初次记录的 U0相差 35%以上吋, 报电压严重偏低故 障; After normal use, the MCU microcontroller collects the U0 and U1 voltage data at a sampling frequency of 100 Hz, and obtains the real voltage value after conversion, and obtains the voltage value through the average value filtering algorithm, and the actual working frequency is 10 Hz; When the sampled U0 is more than 15% different from the first recorded U0, the voltage is reported to be low; when the sampled U0 is more than 35% different from the first recorded U0, the voltage is reported to be severely low;
当 U1/U0在 50±5%以内吋, LED不亮, 无故障输出; When U1/U0 is within 50±5%, the LED is not lit and there is no fault output;
当 SS^ Ul/lKKAS^吋, LED指示灯上数字 4的点亮, 报负端不平衡 1 级故障; When SS^ Ul/lKKAS^吋, the number 4 on the LED indicator lights up, and the negative end is unbalanced.
当 SS^ Ul/lKKSS^吋, LED指示灯上数字 3、 4点亮, 报负端不平衡 2 级故障; When SS^ Ul/lKKSS^吋, the numbers 3 and 4 on the LED indicator light up, and the negative end is unbalanced and level 2 fault;
当 lS^ Ul/LKk S^吋, LED指示灯上数字 2、 3、 4点亮, 报负端不平 衡 3级故障; When lS^ Ul/LKk S^吋, the LEDs on the LEDs 2, 3, 4 are lit, and the negative end is not balanced with a level 3 fault;
当 Ul/U0<15<¾吋, LED指示灯上数字 1、 2、 3、 4点亮, 报负端不平衡 4级故障及负端接地故障; When Ul/U0<15<3⁄4吋, the numbers 1, 2, 3, and 4 on the LED indicator light up, and the negative end is unbalanced. 4 faults and negative ground faults;
当 SSy^Ul/lK eS^吋, LED指示灯上数字 5点亮, 报正端不平衡 1级 故障; When SSy^Ul/lK eS^吋, the number 5 on the LED indicator lights up, and the positive end is unbalanced.
当 SSy^Ul/lK S^吋, LED指示灯上数字 5、 6点亮, 报正端不平衡 2 级故障; When SSy^Ul/lK S^吋, the numbers 5 and 6 on the LED indicator light up, and the positive terminal is unbalanced and level 2 fault;
当 Sy^Ul/lK SS^吋, LED指示灯上数字 5、 6、 7点亮, 报正端不平 衡 3级故障; When Sy^Ul/lK SS^吋, the numbers 5, 6, and 7 on the LED indicator light up, and the positive end is not balanced with a level 3 fault;
当 Ul/U0>85<¾吋, LED指示灯上数字 5、 6、 7、 8点亮, 报正端不平衡 4级故障及正端接地故障; When Ul/U0>85<3⁄4吋, the numbers 5, 6, 7, and 8 on the LED indicator light up, and the positive end is unbalanced. The 4th fault and the positive ground fault;
在报电压严重偏低故障、 负端不平衡 4级故障及正端不平衡 4级故障吋 , 驱动 10输出故障信号。
In the case of a severely low voltage fault, a negative-end unbalanced 4-level fault, and a positive-end unbalanced 4-level fault, the drive 10 outputs a fault signal.
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5428752A (en) * | 1991-09-28 | 1995-06-27 | Motorola, Inc. | Processor system option module identification system |
CN101561479A (en) * | 2009-05-27 | 2009-10-21 | 上海交通大学 | Simple motor detector provided with LED display and RS485 network interface |
CN202903945U (en) * | 2012-11-26 | 2013-04-24 | 湖南华菱湘潭钢铁有限公司 | Direct-current system line grounding fault alarm apparatus |
CN203249957U (en) * | 2013-04-24 | 2013-10-23 | 深圳市中电华星电子技术有限公司 | Multi-path voltage monitoring device |
CN203299319U (en) * | 2013-06-21 | 2013-11-20 | 株洲中车电力机车配件有限公司 | Locomotive insulation detection device |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3995200A (en) * | 1975-06-23 | 1976-11-30 | Stolarczyk Larry G | Ground monitor and circuit breaker actuating device |
JP4780775B2 (en) * | 2006-07-21 | 2011-09-28 | スタンレー電気株式会社 | Power supply LED lamp protection circuit |
CN201181321Y (en) * | 2008-04-18 | 2009-01-14 | 南车株洲电力机车有限公司 | Earthing detection circuit of locomotive control circuit |
CN101738560A (en) * | 2008-11-14 | 2010-06-16 | 南车株洲电力机车有限公司 | Unbalanced electric bridge-based grounding detection circuit for locomotive control loop |
CN103488191B (en) * | 2013-09-27 | 2016-01-20 | 浙江水利水电学院 | A kind of distributed leveling controller circuitry |
CN104133152B (en) * | 2014-08-07 | 2018-01-12 | 介国安 | DC detecting device during single-phase earthing of small current earthing system |
CN204241604U (en) * | 2014-08-07 | 2015-04-01 | 介国安 | DC detecting device during single-phase earthing of small current earthing system |
CN105551410B (en) * | 2016-01-29 | 2018-07-24 | 深圳中科维优科技有限公司 | The full-automatic apparatus and method for measuring LED display blank level adjustment resistance |
-
2016
- 2016-08-04 CN CN201610631498.0A patent/CN106291318B/en active Active
- 2016-11-22 WO PCT/CN2016/106727 patent/WO2018023897A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5428752A (en) * | 1991-09-28 | 1995-06-27 | Motorola, Inc. | Processor system option module identification system |
CN101561479A (en) * | 2009-05-27 | 2009-10-21 | 上海交通大学 | Simple motor detector provided with LED display and RS485 network interface |
CN202903945U (en) * | 2012-11-26 | 2013-04-24 | 湖南华菱湘潭钢铁有限公司 | Direct-current system line grounding fault alarm apparatus |
CN203249957U (en) * | 2013-04-24 | 2013-10-23 | 深圳市中电华星电子技术有限公司 | Multi-path voltage monitoring device |
CN203299319U (en) * | 2013-06-21 | 2013-11-20 | 株洲中车电力机车配件有限公司 | Locomotive insulation detection device |
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