Parking anti-running device capable of monitoring current, voltage and motor operation time in real time

Abstract

The utility model relates to the technical field of motor monitoring, and discloses a parking anti-running device for monitoring current, voltage and motor operation time in real time, the system comprises an operation data acquisition module, the input end of the operation data acquisition module is connected with a motor to be tested, and the operation data acquisition module is used for acquiring real-time operation data of the motor to be tested; the input end of the communication module is connected with the output end of the operation data acquisition module, the output end of the communication module is connected with the input end of the data processing and early warning module, and the communication module is used for transmitting the real-time operation data of the tested motor to the data processing and early warning module; and the data processing and early warning module is used for processing and analyzing the real-time operation data of the tested motor to obtain a motor monitoring result and carrying out early warning according to the motor monitoring result. According to the utility model, the real-time operation data of the motor is acquired, the communication module is used to transmit the real-time operation data to the data processing and early warning module, and the process data is monitored in real time, so that the accurate control and fault early warning of the motor state are realized, and the reliability and maintenance efficiency of the motor are improved.

Description

Technical Field

[0001] This utility model relates to the field of motor monitoring technology, specifically to a parking anti-runaway device that monitors current, voltage and motor operating time in real time. Background Technology

[0002] With the development of industrial automation and intelligent manufacturing, electric motors are increasingly widely used as important power equipment. Rail transit (e.g., railway) commonly uses electric motors to power anti-runaway devices for stopping vehicles. Electric anti-runaway devices are driven by a motor, which, through a drive shaft, reducer, and lead screw, drives the brake arm to extend or retract, thus braking the vehicle. The stability and reliability of the motor are crucial to the operation of the entire system. Traditional motor monitoring methods rely heavily on manual inspection, which is not only time-consuming and labor-intensive but also difficult to achieve real-time monitoring, failing to detect real-time process data of the motor and predict potential motor failures in a timely manner. Utility Model Content

[0003] In view of this, the present invention provides a parking anti-runaway device that monitors current, voltage and motor operating time in real time, so as to solve the problem of not being able to monitor motor process data in real time and predict faults in a timely manner.

[0004] In a first aspect, this utility model provides a routine motor monitoring system, comprising: an operation data acquisition module, a communication module, and a data processing and early warning module, wherein,

[0005] The data acquisition module is operated, and its input end is connected to the motor under test to collect the real-time operating data of the motor under test.

[0006] The communication module has its input end connected to the output end of the running data acquisition module and its output end connected to the input end of the data processing and early warning module. It is used to transmit the real-time running data of the motor under test to the data processing and early warning module.

[0007] The data processing and early warning module is used to process and analyze the real-time operating data of the motor under test, obtain motor monitoring results, and issue early warnings based on the motor monitoring results.

[0008] The normalized motor monitoring system provided by this utility model uses an operation data acquisition module to acquire real-time operation data of the motor, and uses a communication module to transmit the real-time operation data to a data processing and early warning module. It monitors the process data of the motor in real time, realizes precise control of the motor status and fault early warning, and improves the reliability and maintenance efficiency of the motor.

[0009] In one optional implementation, the data acquisition module includes: multiple current measurement units, multiple voltage measurement units, and a running time recording unit, wherein...

[0010] The current measurement unit has its input terminal connected to the main current circuit of the motor under test and its output terminal connected to the input terminal of the communication module. It is used to measure the real-time current data of the target phase line of the motor under test.

[0011] The voltage measurement unit has its input terminal connected to the three-phase power supply line of the motor under test, and its output terminal connected to the input terminal of the communication module. It is used to measure the real-time voltage data of the target phase line of the motor under test.

[0012] The running time recording unit has its input terminal connected to the control circuit of the motor under test, and is used to record the running time of the motor under test.

[0013] The routine motor monitoring system provided by this utility model can detect motor overload conditions in a timely manner by measuring real-time current data and take timely protective mechanisms to prevent motor damage or fire. By measuring real-time voltage data, it can help provide stable power supply to the motor and ensure its safe operation. By analyzing the motor's running time, it can formulate more scientific and reasonable maintenance plans, realize the transformation from periodic maintenance to condition-based maintenance, and reduce the occurrence of unexpected downtime.

[0014] In one optional implementation, the current measurement unit includes: a Hall current sensor and a current data conversion circuit, wherein,

[0015] The Hall current sensor has its primary side connected to the main current circuit of the motor under test and its secondary side connected to the input terminal of the communication module. It is used to collect the AC current signal of the motor under test based on the principle of electromagnetic induction.

[0016] The current data conversion circuit has its input terminal connected to the output terminal of the Hall current sensor. It is used to receive AC current signals and convert the AC current signals into a constant current loop standard signal output in a linear ratio as the real-time current data of the motor under test.

[0017] The normalized motor monitoring system provided by this utility model is based on the Hall effect for measurement. It does not require direct contact with the circuit under test and will not affect the circuit under test. At the same time, it improves the service life and reliability of the sensor. The Hall current sensor has high measurement accuracy and fast response speed, and can output real-time current in a timely and accurate manner. Using a current data conversion circuit, the AC current signal is converted into a constant current loop standard signal as real-time current data, which improves readability and facilitates subsequent processing and analysis.

[0018] In one optional implementation, the voltage measurement unit includes: a voltage transformer, a voltage converter, and a signal processing circuit, wherein,

[0019] A voltage transformer, whose input terminal is connected to the three-phase power supply line of the motor under test, and whose output terminal is connected to the input terminal of the communication module, is used to collect the high-voltage electrical signal of the motor under test and convert it into a low-voltage electrical signal.

[0020] A voltage converter, whose input is connected to the output of a voltage transformer, is used to convert low-voltage signals into digital signals.

[0021] The signal processing circuit, whose input terminal is connected to the output terminal of the voltage converter, is used to process digital signals to obtain calibration voltage signals as real-time voltage data of the motor under test.

[0022] The normalized motor monitoring system provided by this utility model can measure the voltage in a three-phase four-wire circuit with high precision using a voltage transformer, providing accurate voltage data support for the stable operation of the motor. The voltage signal collected by the sensor is processed by a voltage converter and a signal processing circuit to improve the quality and accuracy of the signal, making it easier to grasp the voltage changes in a timely and accurate manner.

[0023] In one optional implementation, the runtime recording unit includes: a timer and a memory, wherein,

[0024] The timer starts counting when the motor under test starts and stops counting when the motor under test stops running, thus obtaining the running time data of the motor under test;

[0025] The memory, connected to the timer, is used to record and store the running time data of the motor under test.

[0026] The routine motor monitoring system provided by this utility model can optimize equipment management through long-term accumulated motor operating time data. Through data analysis, it can formulate more reasonable motor maintenance plans and replacement cycles, and evaluate the performance of different motors under actual working conditions, providing a basis for equipment selection and upgrades.

[0027] In one optional implementation, the communication module includes: a communication interface unit and / or a wireless communication unit, wherein,

[0028] The communication interface unit is used to connect the operation data acquisition module and the data processing and early warning module, and transmits the real-time operation data of the tested motor to the data processing and early warning module via a wired connection.

[0029] The wireless communication unit is used to transmit the real-time operating data of the motor under test to the data processing and early warning module wirelessly.

[0030] The routine motor monitoring system provided by this utility model has a communication module that has both wired and wireless communication functions, which makes it easy to select the data transmission method according to the actual situation. Wired transmission is more accurate, while wireless transmission can meet the needs of remote monitoring and management, making the application more flexible.

[0031] In one optional implementation, the data processing and early warning module includes: a control unit, a display unit, and an alarm unit, wherein,

[0032] The control unit is used to receive real-time operating data of the motor under test, determine the motor monitoring results based on the real-time operating data and preset normal operating requirements, and predict motor faults based on the motor monitoring results.

[0033] The display unit is used to visualize the motor monitoring results and predicted motor faults.

[0034] The alarm unit is used to determine the warning level based on the predicted motor fault and to issue alarm information based on the warning level.

[0035] The routine motor monitoring system provided by this utility model uses a control unit to analyze the collected real-time motor operation data, determines whether there is a fault in the motor based on the analysis results, and displays the motor monitoring results and faults in real time through a display unit, so that staff can intuitively and comprehensively understand the operating status of the motor. An alarm unit issues alarm information so that staff can promptly detect faults and take measures to improve the safety of motor operation.

[0036] In one optional implementation, the control unit includes: a programmable logic controller and a host computer, wherein,

[0037] A programmable logic controller (PLC) is used to process and analyze the real-time operating data of the motor under test to obtain motor monitoring results and predict motor faults.

[0038] The host computer is used to receive motor monitoring results and predict motor faults, and to remotely control the programmable logic controller.

[0039] The routine motor monitoring system provided by this utility model utilizes a host computer and a programmable logic controller (PLC) to jointly control the motor monitoring system, perform local data analysis and processing to improve data processing efficiency, and utilize the host computer to remotely control the PLC to improve the flexibility of control and management.

[0040] In one optional implementation, predicting motor faults includes: real-time current exceeding the upper limit of a preset current range, real-time current falling below the lower limit of a preset current range, real-time voltage exceeding the upper limit of a preset voltage range, real-time voltage falling below the lower limit of a preset voltage range, running time exceeding the upper limit of a preset running time range, and running time falling below the lower limit of a preset running time range.

[0041] The routine motor monitoring system provided by this utility model can detect faults such as excessive or insufficient current, excessive or insufficient voltage, and excessive or insufficient running time during motor operation by monitoring real-time current, real-time voltage, and running time, and take corresponding measures to improve the safety of motor operation.

[0042] Secondly, this utility model provides a parking anti-runaway device that monitors current, voltage and motor operating time in real time. The parking anti-runaway device includes a motor and a normalized motor monitoring system as described in the first aspect.

[0043] The parking anti-roll device provided by this utility model uses the normalized motor monitoring system of any one of the first aspects to monitor the motor, monitor the current, voltage and motor running time in real time, ensure the normal use of the parking anti-roll device, avoid the inability to stop due to the failure of the electric parking anti-roll device, and improve vehicle driving safety. Attached Figure Description

[0044] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the structure of a routine motor monitoring system according to an embodiment of the present utility model;

[0046] Figure 2 This is a schematic diagram of another standard motor monitoring system according to an embodiment of the present utility model;

[0047] Figure 3 This is a schematic diagram of the structure of another standard motor monitoring system according to an embodiment of the present utility model;

[0048] Figure 4 This is a schematic diagram illustrating the working principle of the Hall current sensor in a routine motor monitoring system according to an embodiment of the present invention;

[0049] Figure 5 This is a schematic diagram of a parking anti-runaway device that monitors current, voltage, and motor operating time in real time according to an embodiment of the present invention. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0051] This utility model provides a parking anti-runaway device that monitors current, voltage, and motor operating time in real time. By monitoring the real-time current, voltage, and running time of the motor, it achieves precise control of the motor status and fault early warning, thereby improving motor reliability and maintenance efficiency.

[0052] According to an embodiment of this utility model, a routine motor monitoring system is provided, such as... Figure 1 As shown, the routine motor monitoring system includes: operation data acquisition module 1, communication module 2, and data processing and early warning module 3.

[0053] like Figure 1 As shown, the data acquisition module 1 is running, and its input end is connected to the motor under test to collect the real-time running data of the motor under test.

[0054] Specifically, the real-time operating data of the motor under test can be determined according to the actual situation, including but not limited to: current, voltage, temperature, running time, etc. The connection method between the operating data acquisition module 1 and the motor under test is determined according to the type of operating data and the data acquisition device. For example, a Hall effect sensor is a non-contact current measuring device that indirectly measures the magnitude of current by detecting changes in the magnetic field. This type of sensor usually consists of a magnetic core and a Hall element embedded in it. When current flows through the conductor, a magnetic field is generated around it. The Hall element senses this magnetic field and outputs a corresponding voltage signal, which can be amplified and processed to obtain an accurate current reading. The connection method between the Hall effect sensor and the motor under test is as follows: the conductor carrying the current to be measured is passed through the central hole of the Hall effect sensor. For alternating current, if bidirectional measurement is required, the direction of the conductor should be ensured to be correct; for direct current, there is generally no direction requirement. This is only an example and is not a limitation.

[0055] When monitoring current and voltage, all electrical connections must be secure and reliable to prevent loosening that could lead to short circuits or other safety hazards. The selection of measuring equipment should consider factors such as accuracy, response speed, and operating temperature range to meet the specific application requirements. For long-term monitoring in industrial environments, products with a protection rating (e.g., IP65) are necessary to resist the effects of dust and moisture.

[0056] like Figure 1 As shown, the communication module 2 has its input end connected to the output end of the running data acquisition module 1, and its output end connected to the input end of the data processing and early warning module 3, and is used to transmit the real-time running data of the motor under test to the data processing and early warning module 3.

[0057] Specifically, the communication module 2 includes various communication interfaces, such as an Ethernet interface and a wireless communication module, which can transmit the real-time operating data of the motor under test to the data processing and early warning module 3.

[0058] like Figure 1 As shown, the data processing and early warning module 3 is used to process and analyze the real-time operating data of the motor under test, obtain the motor monitoring results, and issue early warnings based on the motor monitoring results.

[0059] Specifically, the data processing and early warning module 3 can be a controller, host computer, mobile terminal, etc. It can process and analyze the real-time operating data of the tested motor, obtain motor monitoring results, and display them visually, such as plotting voltage and current curves and generating motor operation reports, so that staff can fully understand the operating status of the motor. The data processing and early warning module 3 also pre-sets the normal threshold range corresponding to the operating data, and predicts motor faults by comparing the real-time operating data with the corresponding normal threshold range, and triggers fault early warning signals to remind staff to take measures in advance to avoid irreparable losses after the fault occurs.

[0060] The normalized motor monitoring system provided in this embodiment uses the operation data acquisition module 1 to acquire the real-time operation data of the motor, and uses the communication module 2 to transmit the real-time operation data to the data processing and early warning module 3. It monitors the process data of the motor in real time, realizes precise control of the motor status and fault early warning, and improves the reliability and maintenance efficiency of the motor.

[0061] In some alternative implementations, such as Figure 2 As shown, the running data acquisition module 1 includes: multiple current measurement units 11, multiple voltage measurement units 12, and running time recording unit 13.

[0062] like Figure 2 As shown, the current measurement unit 11 has its input terminal connected to the main current circuit of the motor under test, and its output terminal connected to the input terminal of the communication module 2, and is used to measure the real-time current data of the target phase line of the motor under test.

[0063] Specifically, the connection method between the current measuring unit 11 and the motor under test is determined according to the type of current sensor. The connection method is a mature existing technology and will not be described in detail here. The output terminal of the current measuring unit 11 is connected to the input terminal of the communication module 2 to transmit the real-time current data of the target phase line of the motor under test to the data processing and early warning module 3 through the communication module 2. If the motor under test is a three-phase motor, a current measuring unit 11 needs to be installed for each phase of the motor under test to collect the real-time current data of each target phase line respectively.

[0064] like Figure 2 As shown, the voltage measurement unit 12 has its input terminal connected to the three-phase power supply line of the motor under test, and its output terminal connected to the input terminal of the communication module 2, and is used to measure the real-time voltage data of the target phase line of the motor under test.

[0065] Specifically, the voltage measurement unit 12 mainly measures whether the power supply of the motor under test is normal. The connection method between the unit and the circuit of the motor under test is determined according to the type of voltage sensor. The connection methods of different types of voltage sensors are existing technologies and will not be described in detail here. If the motor under test is a three-phase motor, a three-phase four-wire AC voltage sensor can be selected as the voltage sensor for collecting voltage data. If the motor under test is a single-phase motor, a Hall voltage sensor can be selected for measurement. This is only an example and is not a limitation.

[0066] like Figure 2 As shown, the running time recording unit 13 has its input terminal connected to the control circuit of the motor under test, and is used to record the running time of the motor under test.

[0067] Specifically, the running time recording unit 13 mainly records the start time and stop time of the tested motor, and determines and records the running time of the tested motor in that cycle based on the start time and stop time. The running time is used to determine whether the running time of the tested motor is too long or too short. Based on the trend of voltage and current changes and the running time, the wear condition of the motor, the degree of insulation aging, etc., can be judged more accurately, and potential fault hazards can be detected in advance.

[0068] The routine motor monitoring system provided in this embodiment can detect motor overload conditions in a timely manner by measuring real-time current data and take timely protective mechanisms to prevent motor damage or fire. By measuring real-time voltage data, it can help provide stable power supply to the motor and ensure its safe operation. By analyzing the motor's running time, it can formulate a more scientific and reasonable maintenance plan, realizing the transformation from periodic maintenance to condition-based maintenance, thereby reducing the occurrence of unexpected downtime.

[0069] In some alternative implementations, such as Figure 3 As shown, the current measurement unit 11 includes: a Hall current sensor 111 and a current data conversion circuit 112.

[0070] like Figure 3 As shown, the Hall current sensor 111 has its primary side connected to the main current circuit of the motor under test and its secondary side connected to the input terminal of the communication module 2. It is used to collect the AC current signal of the motor under test based on the principle of electromagnetic induction.

[0071] Specifically, the Hall current sensor 111 is a magnetic field sensor based on the Hall effect, including two operating modes: open-loop (direct-amplitude) and closed-loop (magnetic balance). The advantages of the direct-amplitude Hall sensor are its simple circuit design and relatively low cost; its disadvantages are poor accuracy and linearity, slow response time, and large temperature drift. To overcome the shortcomings of the direct-amplitude Hall sensor, the closed-loop (magnetic balance) Hall current sensor 111 was developed. The closed-loop Hall current sensor 111 is also known as the zero-flux Hall current sensor 111, such as... Figure 4 As shown, it consists of a primary circuit, a magnetic ring, a Hall element, a secondary coil, and an amplifier. When the magnetic flux generated by the primary current IP is concentrated in the magnetic circuit through a high-quality magnetic core, the Hall element, fixed in the air gap, detects the flux. A reverse compensation current is output through a multi-turn coil wound on the magnetic core to cancel out the magnetic flux generated by the primary current IP, ensuring that the magnetic flux in the magnetic circuit remains zero. After processing by a special circuit, the sensor's output terminal can accurately reflect the current change of the primary current.

[0072] The Hall current sensor 111 in this embodiment is a closed-loop Hall current sensor 111. The magnetic circuit and the output of the Hall device have a good linear relationship. Therefore, the voltage signal U0 output by the Hall device can indirectly reflect the magnitude of the measured current I1, that is: I1∝U0∝B1, where B1 represents the magnetic field strength. U0 is calibrated to be 50mV or 100mV when the measured current I1 is at its rated value, so as to obtain a Hall direct detection (no amplification) current sensor.

[0073] The Hall current sensor 111 generates a magnetic flux Φ1 from the measured current I1 in the primary circuit. This flux is compensated by the magnetic flux Φ2 generated by the current I2 passing through the secondary compensation coil, maintaining a magnetic balance. The Hall device remains in a state of detecting zero magnetic flux. This advanced principle is superior to the direct detection principle, with outstanding advantages of fast response time and high measurement accuracy, making it particularly suitable for detecting weak currents. Given Φ1=Φ2I1N1=I2N2I2=NI / N2·I1, when the compensation current I2 flows through the measuring resistor RM, it is converted into a voltage across RM. The sensor measures the voltage U0, i.e., U0=I2RM. Based on the Hall magnetic compensation principle, current sensors with a series of rated inputs have been manufactured. Because magnetically compensated current sensors require thousands of turns of compensation coil wound on a magnetic ring, the cost and operating current consumption increase. However, magnetically compensated current sensors have advantages such as higher accuracy and faster response that are incomparable to direct detection sensors.

[0074] The characteristics of Hall effect alternating current sensors include:

[0075] (1) High-precision measurement: It has high measurement accuracy and can accurately measure AC current. The accuracy level can reach 0.5%, 1%, etc., which can meet a variety of high-precision measurement needs.

[0076] (2) Good linearity: The output signal and the measured AC current have a good linear relationship, which facilitates signal processing and data analysis and helps to accurately obtain current information.

[0077] (3) Wide bandwidth response: It has a wide bandwidth and can measure current signals from DC to high frequency. It can adapt to AC current measurement at different frequencies, such as power frequency and high frequency transient current in power systems.

[0078] (4) Strong electrical isolation: The electrical isolation between input and output is good, which can effectively prevent electrical interference, ensure the stability and safety of the measurement system, and is suitable for current measurement in complex electrical environments.

[0079] (5) Non-contact measurement: Measurement is based on the Hall effect, which does not require direct contact with the circuit under test and will not affect the circuit under test. It also improves the service life and reliability of the sensor.

[0080] (6) Simple and compact structure: It is usually composed of Hall element, magnetic core and signal processing circuit 123, etc. The structure is relatively simple, small in size, easy to install and use, and can save space.

[0081] (7) Fast response speed: It can quickly respond to changes in the measured AC current and output measurement signals in a timely and accurate manner. It can be used for real-time monitoring and control of rapidly changing current, such as rapid feedback of current changes in inverter devices.

[0082] (8) Strong overload capacity: Within a certain range, even if the measured AC current exceeds the rated measurement range of the sensor, it will not be easily damaged and has a certain overload protection capability.

[0083] (9) The temperature characteristics are relatively complex: On the one hand, Hall elements made of semiconductor materials are sensitive to temperature changes and have temperature drift problems, so temperature compensation measures need to be taken to improve measurement accuracy; on the other hand, some Hall AC sensors can maintain good performance over a wide temperature range after special design and compensation.

[0084] like Figure 3 As shown, the current data conversion circuit 112 has its input terminal connected to the output terminal of the Hall current sensor 111. It is used to receive AC current signals and convert the AC current signals into a constant current loop standard signal output in a linear ratio as the real-time current data of the motor under test.

[0085] Specifically, the current data conversion circuit 112 can convert the AC current signal collected by the Hall current sensor 111 into a DC 4A~20mA constant current loop standard signal output according to the current ratio as the real-time current data of the motor under test. It can sense the measured DC current data to meet the requirements of current data transmission, processing, storage, display, recording, and control, realizing automatic detection and automatic control. It utilizes the principle of electromagnetic induction to measure the AC current in the power grid in real time, and uses constant current technology and linear temperature compensation technology to isolate and convert it into a standard DC signal output.

[0086] The normalized motor monitoring system provided in this embodiment is based on the Hall effect for measurement. It does not require direct contact with the circuit under test and will not affect the circuit under test. At the same time, it improves the service life and reliability of the sensor. The Hall current sensor 111 has high measurement accuracy and fast response speed, and can output real-time current in a timely and accurate manner. The current data conversion circuit 112 is used to convert the AC current signal into a constant current loop standard signal as real-time current data, which improves readability and facilitates subsequent processing and analysis.

[0087] In some alternative implementations, such as Figure 3 As shown, the voltage measurement unit 12 includes: a voltage transformer 121, a voltage converter 122, and a signal processing circuit 123.

[0088] like Figure 3 As shown, voltage transformer 121 has its input terminal connected to the three-phase power supply line of the motor under test, and its output terminal connected to the input terminal of communication module 2. It is used to collect the high-voltage electrical signal of the motor under test and convert it into a low-voltage electrical signal.

[0089] Specifically, voltage transformer 121 is used for voltage measurement in high-voltage systems. It can proportionally convert high voltage into a lower, safer voltage for instrument display or secondary equipment use. The connection method between voltage transformer 121 and the motor under test is as follows: the primary winding of voltage transformer 121 is connected to the voltage source to be measured in the motor under test, while the secondary winding is connected to measuring instruments or protective relays, etc.

[0090] For three-phase motors, a three-phase four-wire AC voltage sensor is used, including but not limited to: a three-phase voltage transformer 121, a voltage converter 122, and a signal processing circuit 123.

[0091] The three-phase voltage transformer 121 is the core component, which can collect the voltage value of each phase in the three-phase four-wire circuit in real time. When the three-phase AC voltage signal passes through the primary winding of the voltage transformer 121, a corresponding voltage signal will be induced in the secondary winding based on the principle of electromagnetic induction, thereby converting high voltage into low voltage.

[0092] The features of a three-phase four-wire AC voltage sensor include:

[0093] (1) High-precision measurement: It can accurately measure the voltage in a three-phase four-wire circuit with an accuracy level of 0.2% or 0.5%, providing accurate voltage data support for the stable operation of the power system.

[0094] (2) High isolation performance: Special isolation modules are used, such as electromagnetic isolation and optoelectronic isolation technologies, to achieve effective isolation between the power grid and the measurement circuit, which can avoid electrical interference and safety hazards and ensure the safety of personnel and equipment.

[0095] (3) Wide frequency response characteristics: It has a wide frequency response range, can accurately measure AC voltage signals at different frequencies, and is suitable for various complex power system environments.

[0096] (4) Low drift: During long-term operation, the output signal drift is small, which can maintain stable measurement accuracy and reduce the impact of environmental temperature, time and other factors on the measurement results.

[0097] (5) Low power consumption design: The power consumption is low during normal operation, generally a few milliamps to tens of milliamps, which can reduce energy consumption and is also convenient for use in some occasions with strict power consumption requirements.

[0098] (6) Wide temperature range: It can work normally in a wide temperature range, such as -10℃~55℃, -25℃~70℃, etc., adapting to different climate conditions and working environments.

[0099] (7) Multiple output specifications: Common output specifications include 0~3.5V, 0~5V, 0~10V, 0~20mA, 4~20mA, etc., which can meet the needs of different users.

[0100] (8) Easy installation: Most of them adopt a snap-fit ​​structure or standard 35mm DIN rail installation. The structure is compact, the installation is simple and quick, and can save installation time and space.

[0101] (9) Real-time monitoring and fault alarm: It can monitor the voltage status in real time, detect faults such as overvoltage, undervoltage, phase loss, and power supply interruption in a timely manner, and upload fault information so that staff can handle them in a timely manner.

[0102] The three-phase four-wire AC voltage sensor supports multiple data transmission methods, including but not limited to:

[0103] (1) Wired transmission: Common RS485 and RS232 interfaces. Among them, the RS48 interface uses differential signal transmission, which has strong anti-interference ability and a long transmission distance of up to 1200 meters. Multiple devices can be connected on one bus, which is convenient for forming a distributed monitoring system. The RS232 interface is suitable for short-distance transmission, generally within 15 meters, and has a higher data transmission rate.

[0104] (2) Bus transmission: For example, the Gulf GST-DJ-S60E AC three-phase four-wire dual-channel voltage monitoring sensor adopts a non-polarity two-bus communication method, which is simple to wire and has stable and reliable communication, reducing wiring costs and construction difficulties.

[0105] (3) Analog signal transmission: It can convert voltage signals into standard analog signals such as 4-20mA, 0-5V, and 0-10V for transmission. It is suitable for occasions where the signal transmission accuracy requirements are not particularly high and the receiving end is an analog input device.

[0106] like Figure 3 As shown, voltage converter 122, whose input terminal is connected to the output terminal of voltage transformer 121, is used to convert low voltage signals into digital signals.

[0107] Specifically, after receiving the low-voltage AC voltage signal output by the voltage transformer 121, the voltage converter 122 converts the low-voltage AC voltage signal into a digital signal for subsequent processing and transmission.

[0108] like Figure 3 As shown, the signal processing circuit 123 has its input terminal connected to the output terminal of the voltage converter 122. It is used to process digital signals to obtain calibration voltage signals as real-time voltage data of the motor under test.

[0109] Specifically, the signal processing circuit 123 processes the digital signal, such as amplifying, filtering, and calibrating, to improve the signal quality and accuracy, and finally outputs a precise voltage value as the real-time voltage data of the motor under test.

[0110] The normalized motor monitoring system provided in this embodiment can measure the voltage in a three-phase four-wire circuit with high precision using a voltage transformer 121, providing accurate voltage data support for the stable operation of the motor. The voltage converter 122 and signal processing circuit 123 are used to process the voltage signal collected by the sensor, improving the quality and accuracy of the signal, and facilitating timely and accurate monitoring of voltage changes.

[0111] In some alternative implementations, such as Figure 3 As shown, the runtime recording unit 13 includes: a timer 131 and a memory 132.

[0112] like Figure 3 As shown, timer 131 starts timing when the motor under test starts and stops timing when the motor under test stops running, thus obtaining the running time data of the motor under test.

[0113] Specifically, the built-in timer 131 is used to accurately record the running time of the motor from start to stop. The timer 131 starts timing when the motor under test is powered on and stops timing when the motor is powered off, thereby recording the motor running time data.

[0114] like Figure 3 As shown, the memory 132, which is connected to the timer 131, is used to record and store the running time data of the motor under test.

[0115] Specifically, the motor running time data recorded by timer 131 will be synchronously stored in local memory 132. Memory 132 can be the memory 132 of the main control system or a separate memory 132. There is no restriction here.

[0116] The routine motor monitoring system provided in this embodiment can optimize equipment management by accumulating long-term motor operating time data. Through data analysis, it can formulate more reasonable motor maintenance plans and replacement cycles, and evaluate the performance of different motors under actual working conditions, providing a basis for equipment selection and upgrades.

[0117] In some alternative implementations, such as Figure 2 As shown, the communication module 2 includes: a communication interface unit 21 and / or a wireless communication unit 22.

[0118] like Figure 2 As shown, the communication interface unit 21 is used to connect the running data acquisition module 1 and the data processing and early warning module 3, and transmits the real-time running data of the tested motor to the data processing and early warning module 3 through a wired connection.

[0119] Specifically, the communication interface unit 21 can be an Ethernet interface, an RS485 interface, etc., used to transmit real-time current data, real-time voltage data, running time data, etc. of the motor under test.

[0120] like Figure 2 As shown, the wireless communication unit 22 is used to transmit the real-time operating data of the motor under test to the data processing and early warning module 3 wirelessly.

[0121] Specifically, the wireless communication unit 22 can be a Wi-Fi module, Bluetooth module, 4G / 5G communication module 2, etc. After the real-time operating data of the motor under test is processed by the local controller, it can be transmitted to the remote monitoring equipment through the wireless communication unit 22. In addition, the local controller can determine the fault of the motor under test based on the real-time operating data and generate a fault signal. When faults such as overvoltage, undervoltage, phase loss, or phase reversal occur, the sensor will transmit the fault signal to the monitoring equipment in a timely manner so that the staff can quickly locate and handle the fault, ensuring the safe and stable operation of the power system.

[0122] The normalized motor monitoring system provided in this embodiment has a communication module 2 that has both wired and wireless communication functions, which makes it easy to select the data transmission method according to the actual situation. Wired transmission is more accurate, while wireless transmission can meet the needs of remote monitoring and management, making the application more flexible.

[0123] In some alternative implementations, such as Figure 2 As shown, the data processing and early warning module 3 includes: a control unit 31, a display unit 32, and an alarm unit 33.

[0124] like Figure 2 As shown, the control unit 31 is used to receive real-time operating data of the motor under test, determine the motor monitoring results based on the real-time operating data and preset normal operating requirements, and predict motor faults based on the motor monitoring results.

[0125] Specifically, the control unit 31 is used to set the normal threshold range of voltage and current and the reference standard of running time. When the monitored data exceeds the threshold range or the running time is abnormal, a fault warning signal is triggered and sent to the alarm unit 33.

[0126] like Figure 2 As shown, display unit 32 is used to visualize the motor monitoring results and predicted motor faults.

[0127] Specifically, the display unit 32 will display the motor monitoring results and predicted motor faults determined based on the real-time operating data of the motor under test on the display screen in real time. The display format is not limited; it can be displayed in conjunction with a physical image or in the form of a chart.

[0128] like Figure 2As shown, alarm unit 33 is used to determine the warning level based on the predicted motor fault and issue alarm information based on the warning level.

[0129] Specifically, alarm unit 33 receives early warning signals, which can be sent to staff through various means such as audible and visual alarms, SMS notifications, and pop-up windows on the host computer, so that corresponding measures can be taken in a timely manner, such as adjusting motor operating parameters and arranging equipment maintenance.

[0130] The routine motor monitoring system provided in this embodiment uses the control unit 31 to analyze the collected real-time motor operation data, determines whether there is a fault in the motor based on the analysis results, and displays the motor monitoring results and faults in real time through the display unit 32, so that the staff can intuitively and comprehensively understand the operating status of the motor. The alarm unit 33 issues alarm information so that the staff can discover the fault in time and take measures to improve the safety of motor operation.

[0131] In some alternative implementations, such as Figure 2 As shown, the control unit 31 includes: a programmable logic controller and a host computer.

[0132] like Figure 2 As shown, a programmable logic controller (PLC) is used to process and analyze the real-time operating data of the motor under test, obtain motor monitoring results, and predict motor faults.

[0133] Specifically, the Programmable Logic Controller (PLC) stores the monitored voltage, current, running time data, and fault information locally. The storage medium can be a high-capacity memory card or hard drive to ensure data integrity and traceability.

[0134] like Figure 2 As shown, the host computer is used to receive motor monitoring results and predict motor faults, and to remotely control the programmable logic controller.

[0135] The routine motor monitoring system provided in this embodiment utilizes a host computer and a programmable logic controller (PLC) to jointly control the system. It performs local data analysis and processing to improve data processing efficiency, and uses the host computer to remotely control the PLC, thereby enhancing the flexibility of control and management.

[0136] In some optional implementations, predicting motor faults includes: real-time current exceeding the upper limit of a preset current range, real-time current falling below the lower limit of a preset current range, real-time voltage exceeding the upper limit of a preset voltage range, real-time voltage falling below the lower limit of a preset voltage range, running time exceeding the upper limit of a preset running time range, and running time falling below the lower limit of a preset running time range.

[0137] The routine motor monitoring system provided in this embodiment can detect faults such as excessive or insufficient current, excessive or insufficient voltage, and excessive or insufficient running time during motor operation by monitoring real-time current, real-time voltage, and running time, and take corresponding measures to improve the safety of motor operation.

[0138] In one specific embodiment, the usage process of the routine motor monitoring system includes:

[0139] Step S1, Installation and Initialization, specifically includes:

[0140] Step S11: Install the Hall current sensor 111 of the current measurement unit 11 in the main circuit of the motor, ensuring that the primary circuit is correctly connected to the motor current circuit and that the secondary circuit is well connected to the data processing and communication unit. Based on the rated current parameters of the motor, calibrate and standardize the sensor, setting appropriate measurement range and accuracy parameters.

[0141] In step S12, the three-phase voltage transformer 121 of the three-phase four-wire AC voltage sensor is connected to the three-phase power supply lines of the motor, and the voltage converter 122 and signal processing circuit 123 are connected to the data processing and communication unit. Similarly, initialization settings are performed based on the motor's rated voltage to ensure the accuracy of voltage measurement.

[0142] Step S13: The timing module of the running time monitoring unit is connected to the motor control circuit, enabling it to accurately sense the motor's start and stop signals and complete the initialization settings of the timing function.

[0143] In step S14, the data processing and fault early warning unit and the data storage and communication unit set relevant parameters, such as fault threshold setting, communication protocol configuration, and data storage path setting.

[0144] Step S2, run the monitoring process, specifically including:

[0145] In step S21, after the motor starts, the current measurement unit 11 monitors the current change in the main circuit of the motor in real time. The Hall element detects the magnetic flux and converts it into a voltage signal. After being processed by the secondary coil, amplifier and other components, the signal reflecting the magnitude of the current is transmitted to the data processing and fault early warning unit.

[0146] In step S22, the three-phase voltage transformer 121 of the voltage measurement unit 12 converts the three-phase power supply voltage into a low-voltage signal, which is then processed by the voltage converter 122 and the signal processing circuit 123, and the accurate voltage value is transmitted to the data processing unit.

[0147] In step S23, the timing module of the running time monitoring unit starts timing, records the running time of the motor, and periodically transmits the running time data to the data processing unit.

[0148] In step S24, after receiving the current, voltage, and running time data, the PLC data processing and fault early warning unit performs real-time analysis and judgment. If the current and voltage data are within the normal threshold range and the running time is normal, monitoring continues; if abnormal data is detected, such as excessive or insufficient current, excessive or insufficient voltage, or excessive or insufficient running time, a fault early warning signal is immediately triggered, and the fault information (including fault type, occurrence time, and related data) is stored in the data storage unit. At the same time, the fault information is sent to the host computer, monitoring center, or relevant personnel through the data storage and communication unit.

[0149] Step S3, data storage and communication, specifically includes:

[0150] In step S31, the PLC data storage unit stores all received monitoring data and fault information locally according to the set storage format and time order, which facilitates subsequent data query and analysis.

[0151] In step S32, the data storage and communication unit transmits data to the host computer or remote monitoring terminal in real time via an Ethernet interface or wireless communication module. The host computer software parses, processes, and visualizes the received data, such as plotting real-time voltage and current waveforms, generating motor operating status reports, and statistically analyzing the number and type of faults. This provides staff with intuitive and comprehensive motor operating information for remote monitoring and management decisions. For example, staff can remotely adjust the motor's operating parameters or arrange for on-site maintenance personnel to inspect and maintain the motor based on the information displayed on the host computer.

[0152] The routine motor monitoring system provided in this embodiment can achieve routine and accurate monitoring of motor voltage, current and running time, effectively improving motor reliability and maintenance efficiency, reducing equipment failure risks and maintenance costs in industrial production processes, and promoting the further development of industrial automation and intelligent manufacturing.

[0153] This embodiment provides a parking anti-runaway device that monitors current, voltage, and motor operating time in real time, such as... Figure 5 As shown, the parking anti-rollover device includes a motor and a normalized motor monitoring system of any of the previous embodiments.

[0154] The parking anti-rollover device provided in this embodiment monitors the current, voltage, and motor operating time in real time. It uses the normalized motor monitoring system of any one of the previous embodiments to monitor the motor, ensuring the normal use of the electric parking anti-rollover device, avoiding situations where the vehicle cannot be stopped due to a malfunction of the electric parking anti-rollover device, and improving vehicle driving safety.

[0155] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A parking brake with real-time monitoring of current, voltage and motor running time, characterized in that, The parking anti-slip device comprises a running data acquisition module, a communication module, a data processing and early warning module, wherein, The running data acquisition module is connected with the measured motor at the input end and is used for collecting real-time running data of the measured motor; the running data acquisition module comprises a plurality of current measurement units, a plurality of voltage measurement units and a running time recording unit; the current measurement unit is connected with the current main circuit of the measured motor at the input end and is connected with the input end of the communication module at the output end, and is used for measuring real-time current data of the target phase line of the measured motor; the voltage measurement unit is connected with the three-phase power supply line of the measured motor at the input end and is connected with the input end of the communication module at the output end, and is used for measuring real-time voltage data of the target phase line of the measured motor; the running time recording unit is connected with the control circuit of the measured motor at the input end and is used for recording the running time of the measured motor; The communication module is connected with the output end of the running data acquisition module at the input end and is connected with the input end of the data processing and early warning module at the output end, and is used for transmitting the real-time running data of the measured motor to the data processing and early warning module; The data processing and early warning module is used for processing and analyzing the real-time running data of the measured motor to obtain motor monitoring results, and performing early warning according to the motor monitoring results.

2. The parking brake with real-time monitoring of current, voltage and motor operation time according to claim 1, characterized in that, The current measurement unit comprises a Hall current sensor and a current data conversion circuit, wherein, The Hall current sensor is connected with the current main circuit of the measured motor at the primary side, is connected with the input end of the communication module at the secondary side, and is used for collecting the alternating current signal of the measured motor according to the electromagnetic induction principle; The current data conversion circuit is connected with the output end of the Hall current sensor at the input end, is used for receiving the alternating current signal, and converts the alternating current signal into a constant current loop standard signal output in linear proportion as the real-time current data of the measured motor.

3. The parking brake with real-time monitoring of current, voltage and motor operation time according to claim 1, characterized in that, The voltage measurement unit comprises a voltage transformer, a voltage converter and a signal processing circuit, wherein, The voltage transformer is connected with the three-phase power supply line of the measured motor at the input end and is connected with the input end of the communication module at the output end, and is used for collecting the high-voltage electric signal of the measured motor and converting it into a low-voltage electric signal; The voltage converter is connected with the output end of the voltage transformer at the input end and is used for converting the low-voltage signal into a digital signal; The signal processing circuit is connected with the output end of the voltage converter at the input end, is used for processing the digital signal, and obtains a calibrated voltage signal as the real-time voltage data of the measured motor.

4. The parking brake with real-time monitoring of current, voltage and motor operation time according to claim 1, characterized in that, The running time recording unit comprises a timer and a memory, wherein, The timer starts timing when the measured motor starts, stops timing when the measured motor stops running, and obtains the running time data of the measured motor; The memory is connected with the timer and is used for recording and storing the running time data of the measured motor.

5. The parking brake with real-time monitoring of current, voltage and motor operation time according to claim 1, characterized in that, The communication module comprises a communication interface unit and / or a wireless communication unit, wherein, The communication interface unit is used for connecting the running data acquisition module and the data processing and early warning module, and is used for transmitting the real-time running data of the measured motor to the data processing and early warning module in a wired connection mode; A wireless communication unit is configured to transmit real-time operation data of the measured motor to the data processing and early warning module in a wireless manner.

6. The parking brake with real-time monitoring of current, voltage and motor operation time according to claim 1, characterized in that, The data processing and early warning module comprises a control unit, a display unit and an alarm unit, wherein, The control unit is configured to receive the real-time operation data of the measured motor, determine a motor monitoring result according to the real-time operation data and a preset normal operation requirement, and predict a motor fault according to the motor monitoring result; The display unit is configured to visually display the motor monitoring result and the predicted motor fault; The alarm unit is configured to determine an early warning level according to the predicted motor fault, and send an alarm information based on the early warning level.

7. The parking brake with real-time monitoring of current, voltage and motor operation time according to claim 6, characterized in that, The control unit comprises a programmable logic controller and a host computer, wherein, The programmable logic controller is configured to process and analyze the real-time operation data of the measured motor to obtain the motor monitoring result and the predicted motor fault; The host computer is configured to receive the motor monitoring result and the predicted motor fault, and remotely control the programmable logic controller.

8. The parking brake with real-time monitoring of current, voltage and motor operation time according to claim 7, characterized in that, The predicted motor fault comprises that the real-time current is greater than the upper limit of a preset current range, the real-time current is less than the lower limit of the preset current range, the real-time voltage is greater than the upper limit of a preset voltage range, the real-time voltage is less than the lower limit of the preset voltage range, the operation time is greater than the upper limit of a preset operation time range, and the operation time is less than the lower limit of the preset operation time range.

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