CN115097756A - Intelligent fan control device for preventing disassembly and temperature alarm and electric locomotive - Google Patents
Intelligent fan control device for preventing disassembly and temperature alarm and electric locomotive Download PDFInfo
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- CN115097756A CN115097756A CN202210707365.2A CN202210707365A CN115097756A CN 115097756 A CN115097756 A CN 115097756A CN 202210707365 A CN202210707365 A CN 202210707365A CN 115097756 A CN115097756 A CN 115097756A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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Abstract
The invention discloses an anti-disassembly and temperature alarm intelligent fan control device and an electric locomotive, and relates to the technical field of intelligent fans, wherein the intelligent fan control device comprises an intelligent control module, a sensor data acquisition module and a variable frequency control module; the analog signals acquired by the sensor data acquisition module are transmitted to the intelligent control module, the intelligent control module processes the acquired analog signals and converts the processed analog signals into corresponding 0-10V voltage control signals, the signals are transmitted to the variable frequency control module, and the variable frequency control module provides corresponding variable frequency voltage for the intelligent control module according to the 0-10V voltage control signals; the system integration is carried out through disassembly prevention and temperature alarm, corresponding different temperature thresholds and temperature alarm are set, and sudden faults are reduced. Through preventing the technology of disassembling, realize fan self-protect function, prevent that the external world from disassembling the fan wantonly, realize former factory and high quality maintenance and maintenance, further improve the life-span and the reliability of product, realize lasting reliable operation of intelligent fan.
Description
Technical Field
The invention relates to the technical field of intelligent fans, in particular to an anti-disassembly and temperature alarm intelligent fan control device and an electric locomotive.
Background
The fan is one of important parts for guaranteeing the safe operation of the electric locomotive, is mainly used for cooling instruments and equipment for generating heat sources, such as a traction transmission converter, a transformer, a traction motor and the like, and is one of key equipment of a rail transit alternating current transmission locomotive. Because the fan is a device rotating at a high speed, the temperature rise is a key parameter influencing the performance and the service life of the fan and parts. In order to prevent the damage of parts such as bearings and windings caused by the overlarge temperature rise of the fan and ensure the normal operation of the rail transit train, the temperature rise of the fan needs to be controlled. The temperature rise of the fan is controlled within the range required by the standard and the train, and the temperature alarm corresponding to different temperature thresholds is set, so that a client can be reminded of maintaining the fan in advance, and sudden faults are reduced. Meanwhile, in the maintenance process of the fan, in order to improve the running reliability of the fan and the electric locomotive and improve the inspection threshold of inferior suppliers, the original factory and high-quality inspection and maintenance are realized, and the disassembly and assembly of the fan are required to be controlled.
Patent CN2016103207968 discloses a motor temperature rise and vibration monitoring device and an implementation method thereof, which solves the problems of defects, incomplete monitoring data and the like in the motor vibration monitoring of the existing monitoring device, realizes the current detection function, and can monitor the motor in all directions such as overload abnormality, temperature rise abnormality and vibration abnormality. The invention realizes the motor vibration and temperature rise monitoring device and method, but the patent does not realize the intelligent control of fan disassembly prevention, and the realization of the disassembly prevention technology and the control of the temperature rise of the fan are the main measures for improving the reliability of the fan; therefore, the intelligent fan control device capable of preventing disassembly and giving temperature alarm and the electric locomotive are provided.
Disclosure of Invention
In order to overcome the limitation of the prior art, the invention provides an intelligent fan control device for preventing disassembly and giving an alarm on temperature and an electric locomotive.
The invention can be realized by the following technical scheme: an intelligent fan control device for preventing disassembly and alarming temperature comprises an intelligent control module, a power circuit pre-stage processing module, an isolation conversion power module, a sensor data acquisition module, a voltage control signal module, a disassembly-preventing loop control module and a frequency conversion control module;
the analog signals acquired by the sensor data acquisition module are transmitted to the intelligent control module, the intelligent control module processes the acquired analog signals and converts the processed analog signals into corresponding 0-10V voltage control signals, the signals are transmitted to the variable frequency control module, and the variable frequency control module provides corresponding variable frequency voltage for the intelligent control module according to the 0-10V voltage control signals;
an anti-disassembly loop and a temperature alarm unit are arranged in the intelligent control module, the anti-disassembly loop forms a protection circuit through a low-voltage direct-current power supply, disassembly of the fan is monitored, the circuit is broken after the fan is disassembled, a contactor signal is disconnected and cannot be reset, and the frequency converter cannot be started at the moment;
the temperature alarm unit is provided with two different temperature alarm thresholds, the real-time temperature monitored by the temperature sensor is compared with the temperature alarm thresholds, and when the real-time temperature exceeds the corresponding temperature alarm threshold, the yellow indicator light or the red indicator light corresponding to the different temperature thresholds is turned on for alarm;
the disassembly prevention loop control module is used for monitoring whether the loops of the frequency conversion control module, the motor and the fan shell are complete or not in real time and immediately informing the main control chip of the intelligent control module when the loops are incomplete.
The invention is further improved in that: the main control chip of the intelligent control module adopts an STM32F407VET6 ARM chip, the kernel adopts a Cortex-M4 kernel, the highest speed of a CPU is 168MHz, and the anti-disassembly loop control module adopts an STC8F1K08 chip.
The invention is further improved in that: the circuit of the sensor data acquisition module is divided into a PT100 temperature data acquisition circuit and a pressure sensor current signal acquisition circuit, and the PT100 temperature signal and the pressure signal are respectively acquired and transmitted to the main control chip after data processing is carried out on the signals by the acquisition circuits.
The invention is further improved in that: the pre-stage processing module of the power circuit adopts an FC-A01D EMC filter to carry out filtering processing; the isolation conversion power supply module adopts VRB1224YMD-15WR3 to isolate the conversion power supply output 24V to supply power for the pressure sensor and the digital-to-analog converter, and then adopts VRB2403YMD-6WR3 to isolate the conversion power supply to supply 3.3V voltage.
The invention is further improved in that: the circuit of the voltage control signal module comprises an AD5412 digital-to-analog converter, an ADUM1400 and an ADUM digital isolation chip, the main control chip processes the acquired sensor analog signals, outputs corresponding digital signals, and converts the digital signals into corresponding 0-10V voltage control signals through the digital isolator and the digital-to-analog converter.
The invention is further improved in that: the intelligent fan control device also comprises a data storage module for storing the real-time temperature acquired by the temperature sensor, wherein the data storage module adopts an SD card for storage, is externally provided with a USB interface and can periodically copy the stored data through a U disk; an RS232 interface is provided externally, and the parameter setting can be carried out by connecting a computer through a serial port.
Electric locomotive, including foretell intelligent fan controlling means who prevents disassembling and temperature warning.
Compared with the prior art, the invention has the following beneficial effects:
the system integration is carried out through disassembly prevention and temperature alarm, corresponding different temperature thresholds and temperature alarm are set, and sudden faults are reduced. The realization is prevented disassembling the technique, realizes fan self-protect function, prevents that the external world from disassembling the fan wantonly, realizes former factory and high quality maintenance and maintenance, further improves the life-span and the reliability of product, realizes lasting reliable operation of intelligent fan.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of an intelligent fan control module of the present invention;
FIG. 2 is a schematic diagram of a control flow of an intelligent fan according to the present invention;
FIG. 3 is a control schematic diagram of an intelligent fan anti-disassembly loop of the invention;
FIG. 4 is a schematic diagram of an intelligent fan temperature and alarm external display of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be given with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1-4, an intelligent fan control device for preventing disassembly and temperature alarm comprises an intelligent control module, a power circuit pre-processing module, an isolation conversion power module, a sensor data acquisition module, a voltage control signal module, an anti-disassembly loop control module and a frequency conversion control module;
the analog signals acquired by the sensor data acquisition module are transmitted to the intelligent control module, the intelligent control module processes the acquired analog signals and converts the processed analog signals into corresponding 0-10V voltage control signals, the signals are transmitted to the variable frequency control module, and the variable frequency control module provides corresponding variable frequency voltage for the intelligent control module according to the 0-10V voltage control signals;
the sensor data acquisition module is provided with four groups of PT100 temperature sensor input interfaces, can monitor the temperature analog signal of motor front end housing, rear end housing, winding and room temperature in real time, and the outside display screen shows the real-time temperature value of monitored object to realize the warning of different temperatures through red, yellow pilot lamp, reserve 1 group of PT100 temperature sensor input interface and pressure sensor input interface in addition. The intelligent control module processes the received temperature analog signal or pressure analog signal and converts the processed temperature analog signal or pressure analog signal into a voltage control signal for controlling the frequency converter;
an anti-disassembly loop and a temperature alarm unit are arranged in the intelligent control module, wherein the anti-disassembly loop is used for providing a low-voltage direct-current power supply to form a protection circuit and detecting the disassembly of the fan, when the circuit is broken, a contactor signal output after disassembly is disconnected and cannot be reset, and a frequency converter cannot be started, so that a supplier is forced to improve the threshold of maintenance and repair;
two temperature alarm thresholds are preset in a temperature alarm unit in the intelligent control module, and a double-color alarm lamp is correspondingly matched with the temperature alarm unit, wherein the double-color alarm lamp comprises a yellow indicator lamp and a red indicator lamp, the yellow indicator lamp corresponds to a first temperature alarm threshold, the red indicator lamp corresponds to a second temperature alarm threshold, the first temperature alarm threshold is smaller than the second temperature alarm threshold, and when real-time temperature data exceeds the first temperature alarm threshold or the second temperature alarm threshold, the corresponding yellow indicator lamp or the red indicator lamp is turned on;
the intelligent control module sends the voltage control signal to the frequency converter, so that the frequency converter provides a variable-frequency control power supply 10V for the intelligent control module according to the voltage control signal, and meanwhile, the intelligent control module is also provided with a rechargeable battery; when no power is supplied by the frequency converter or the frequency converter is in a power-off state, the rechargeable battery maintains the anti-disassembly loop to work normally for no less than one year, and the rechargeable battery can be replaced periodically;
when the temperature analog signals of the front end cover, the rear end cover, the winding and the room temperature of the motor are monitored, the intelligent control module integrates signal acquisition time and real-time temperature data of four positions to obtain a piece of temperature recording data and stores the temperature recording data into the data storage unit, a periodic cleaning mechanism is arranged on the data storage unit, the time limit can be set at will, when the existence duration of the temperature recording data in the data storage unit exceeds the time limit, the temperature recording data is automatically deleted, the storage space of the data storage unit is released, and the stored temperature recording data can be obtained by periodically copying or replacing a storage card;
the memory core of the data memory unit is an SD card, so that the requirement of long-term data storage is met; the USB flash disk is provided with a USB interface, and the stored data can be copied periodically through the USB flash disk; the device is provided with an RS232 interface and can be connected with a computer through a serial port to set the time limit;
in this embodiment, the intelligent control module adopts an STM32F407VET6 ARM main control chip, the main control chip adopts a Cortex-M4 kernel, the highest speed of a CPU reaches 168MHz, and a pre-stage processing module of a power circuit adopts an FC-a01D EMC filter to perform filtering processing; the VRB1224YMD-15WR3 isolates the conversion power module to output 24V to supply power to the reserved pressure sensor and the digital-to-analog converter; the VRB2403YMD-6WR3 isolation conversion power supply provides 3.3V voltage to supply power for the ARM main control chip;
the data acquisition circuit of the sensor is divided into a PT100 temperature data acquisition circuit and a pressure sensor current signal acquisition circuit, PT100 temperature signals and pressure signals are respectively acquired, the two signals are subjected to signal impurity removal processing and then transmitted to a main control chip, a plurality of groups of signal input interfaces are reserved in the data acquisition circuit of the sensor, more dimensional data can be conveniently acquired subsequently, and the whole data acquisition circuit is upgraded;
when the intelligent control module receives PT100 temperature signals and pressure signals, the analog signals of the sensors are subjected to data processing through the main control chip, corresponding digital signals are output, corresponding 0-10V voltage control signals are output after the conversion of the voltage control signal module, the voltage control signal module comprises an AD5412 digital-to-analog converter and an ADUM digital isolation chip, the corresponding digital signals are transmitted through a path of the ADUM digital isolation chip, the AD5412 digital-to-analog converter performs signal conversion on the corresponding digital signals, and the digital signals are converted into analog electric signals, namely 0-10V voltage control signals;
as shown in fig. 3, the anti-disassembly loop control module uses an STC8F1K08 chip to monitor whether the frequency converter-ground, the motor-ground and the fan casing loop are complete in real time. When the whole anti-disassembly loop is incomplete, the STC8F1K08 chip sends a signal to inform the main control chip; when the frequency converter is powered on, the isolated power module 0303S-1WR2 provides power for the anti-disassembly loop; when the frequency converter is powered off, a rechargeable battery is used for supplying power, and the rechargeable battery can be specifically selected from a button battery BH1220_ SMD;
it should be noted that the intelligent control module is installed in a mechanical room of the electric locomotive, and the housing of the intelligent control module adopts an alloy shielding housing, so as to meet the electromagnetic compatibility requirement, so that the intelligent control module is not subjected to electromagnetic interference between the machines, and meanwhile, the intelligent control module is ensured not to emit electromagnetic interference to influence other equipment between the machines; when being installed, the intelligent fan and the intelligent control module meet the 1-class A-level vibration impact requirement of IEC 61373.
Although the present invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalents and alternatives falling within the spirit and scope of the invention.
Claims (7)
1. An intelligent fan control device for preventing disassembly and alarming temperature is characterized by comprising an intelligent control module, a power circuit pre-stage processing module, an isolation conversion power module, a sensor data acquisition module, a voltage control signal module, a disassembly-preventing loop control module and a frequency conversion control module;
the analog signals acquired by the sensor data acquisition module are transmitted to the intelligent control module, the intelligent control module processes the acquired analog signals and converts the processed analog signals into corresponding 0-10V voltage control signals, the signals are transmitted to the variable frequency control module, and the variable frequency control module provides corresponding variable frequency voltage for the intelligent control module according to the 0-10V voltage control signals;
an anti-disassembly loop and a temperature alarm unit are arranged in the intelligent control module, the anti-disassembly loop forms a protection circuit through a low-voltage direct-current power supply, disassembly of the fan is monitored, the circuit is broken after the fan is disassembled, a contactor signal is disconnected and cannot be reset, and a frequency converter cannot be started at the moment;
the temperature alarm unit is provided with two different temperature alarm thresholds, the real-time temperature monitored by the temperature sensor is compared with the temperature alarm thresholds, and when the real-time temperature exceeds the corresponding temperature alarm threshold, the yellow indicator light or the red indicator light corresponding to the different temperature thresholds is turned on for alarm;
the disassembly prevention loop control module is used for monitoring whether the loops of the frequency conversion control module, the motor and the fan shell are complete or not in real time and immediately informing the main control chip of the intelligent control module when the loops are incomplete.
2. The intelligent fan control device capable of preventing disassembly and giving the temperature alarm as claimed in claim 1, wherein a main control chip of the intelligent control module adopts an STM32F407VET6 ARM chip, an inner core adopts a Cortex-M4 inner core, the highest speed of a CPU is 168MHz, and the anti-disassembly loop control module adopts an STC8F1K08 chip.
3. The intelligent fan control device for preventing disassembly and temperature alarm of claim 2, wherein the sensor data acquisition module comprises a PT100 temperature data acquisition circuit and a pressure sensor current signal acquisition circuit, and the PT100 temperature signal and the pressure signal are respectively acquired and transmitted to the main control chip after being processed by the acquisition circuits.
4. The intelligent fan control device for preventing disassembly and temperature alarm as claimed in claim 1, wherein the pre-processing module of the power circuit adopts an FC-A01D EMC filter for filtering processing; the isolation conversion power supply module adopts VRB1224YMD-15WR3 to isolate the output of the conversion power supply to supply power for the pressure sensor and the digital-to-analog converter, and then adopts VRB2403YMD-6WR3 to isolate the conversion power supply to supply 3.3V.
5. The intelligent fan control device for preventing disassembly and temperature alarm as claimed in claim 1, wherein the circuit of the voltage control signal module comprises an AD5412 digital-to-analog converter, an ADUM1400 and an ADUM digital isolation chip, the main control chip processes the acquired sensor analog signal, outputs a corresponding digital signal, and converts the signal into a corresponding voltage control signal of 0-10V through the digital-to-analog converter after passing through the digital isolator.
6. The intelligent fan control device for preventing disassembly and giving a temperature alarm according to claim 1, further comprising a data storage module for storing the real-time temperature collected by the temperature sensor, wherein the data storage module adopts an SD card for storage, is externally provided with a USB interface, and can periodically copy the stored data through a U disk; an RS232 interface is provided externally, and the parameter setting can be carried out by connecting a computer through a serial port.
7. An electric locomotive comprising the intelligent fan control apparatus for disassembly prevention and temperature alarm of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210707365.2A CN115097756A (en) | 2022-06-21 | 2022-06-21 | Intelligent fan control device for preventing disassembly and temperature alarm and electric locomotive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210707365.2A CN115097756A (en) | 2022-06-21 | 2022-06-21 | Intelligent fan control device for preventing disassembly and temperature alarm and electric locomotive |
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| Publication Number | Publication Date |
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| CN115097756A true CN115097756A (en) | 2022-09-23 |
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| CN202210707365.2A Pending CN115097756A (en) | 2022-06-21 | 2022-06-21 | Intelligent fan control device for preventing disassembly and temperature alarm and electric locomotive |
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| CN (1) | CN115097756A (en) |
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- 2022-06-21 CN CN202210707365.2A patent/CN115097756A/en active Pending
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