CN211319021U - Metallurgical node temperature monitoring system based on power supply conversion circuit - Google Patents
Metallurgical node temperature monitoring system based on power supply conversion circuit Download PDFInfo
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- CN211319021U CN211319021U CN201922256132.1U CN201922256132U CN211319021U CN 211319021 U CN211319021 U CN 211319021U CN 201922256132 U CN201922256132 U CN 201922256132U CN 211319021 U CN211319021 U CN 211319021U
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Abstract
The utility model discloses a metallurgical node temperature monitoring system based on power supply conversion circuit, which comprises a sensor network, a convergent node, a monitoring terminal and a PC terminal, wherein the sensor network is arranged in a metallurgical channel of a blast furnace and consists of a plurality of sensor nodes for temperature detection; the sensor node comprises a thermocouple sensor, a data preprocessing module, an STM32 controller module, an RS485 interface module, a data transmission module, a clock module, a data storage module and a power module, wherein the power module comprises a PV (photovoltaic) assembly and a power supply conversion circuit; the utility model discloses metallurgical channel temperature monitoring system of blast furnace realizes a plurality of metallurgical point temperature acquisition, intelligent processing and networked production environment monitoring based on wireless sensor network, has improved the reliability of on-the-spot high hot ambient temperature monitoring, further reduces metallurgical production process cost, has strengthened industrial production safety control.
Description
Technical Field
The utility model relates to a temperature acquisition and remote monitoring technical field especially relate to a metallurgical node temperature monitoring system based on power supply conversion circuit.
Background
In the current instrument equipment, temperature acquisition becomes an indispensable and extremely important part, and in the operation process of the equipment, the environmental temperature, the equipment temperature and even the temperature value of a certain device can be monitored in real time, so that the equipment plays a vital role in normal operation and protection of the equipment.
Currently, there are several general approaches to temperature acquisition. Physical methods such as mercury type, infrared remote sensing thermal imaging technology, temperature sensor acquisition method and the like. While the above methods have certain disadvantages to a greater or lesser extent.
The physical methods such as mercury type are to utilize the thermal expansion characteristics of liquid such as mercury and kerosene, to seal the liquid in a certain container after processing, and finally to read the environmental temperature value by means of artificial visual identification. The method is simple and easy to implement and low in cost, but the accuracy is low because human eyes are needed for reading and identifying, and meanwhile, the method is difficult to be applied to the temperature acquisition environment of specific equipment and devices because of the influence of structural styles.
The infrared remote sensing thermal imaging technology utilizes spectral characteristics of different temperatures, collects light waves of specific areas and positions through special photosensitive equipment, forms images of heat through software algorithms, can read temperature values through comparing image colors by human eyes, and can also display the temperature values in real time through software. Although convenient to operate, the accuracy is not high due to the influence of imaging technology, operation distance, operation angle and the like, and the most important point is that the cost is high, and the specific application of the method is severely limited.
At present, a large number of methods for directly acquiring the temperature sensor are applied, namely, the analog quantity generated by the temperature sensor at different temperatures directly reflects a specific temperature value. The method is simple and easy to implement and reliable in precision, but in the application process, the analog quantity generated by the temperature sensor is easily interfered by other signals, especially when the method is applied to the inside of instrument equipment, the complex electromagnetic environment can generate uncontrollable interference on the acquired value, and finally the precision and the stability of the temperature acquisition result are greatly reduced.
The large blast furnace has large iron output and severe metallurgical production environment, leads to increasingly serious erosion of the molten iron channel, needs manual work to regularly carry out temperature measurement on the metallurgical channel part, and has low accuracy, high production cost and low safety guarantee. In order to carry out all-dimensional temperature measurement on the blast furnace metallurgical channel and grasp the temperature and the corrosion condition of the molten iron channel, multi-node data transmission is carried out by utilizing an RS485 master-slave communication mode. The RS485 can provide stable, instant and reliable data communication, however, the RS485 bus has self limitations, such as the communication distance is restricted by the communication speed, and with the increase of the distance, the data packet loss rate is increased, the transmission speed is reduced, and thus the serious multi-node data loss phenomenon occurs.
The cellular-based NB-IoT is a narrowband Internet of things technology designed according to the demand of the Internet of things, has the advantages of low cost, wide coverage and wireless transmission, and is widely applied to the field of interconnection of everything. And the NB-IoT module collects multi-node data of the field RS485 bus and transmits the data to the upper computer through the 4G network.
In industrial control and application circuits of many sensors, the analog signal is typically output in the form of a voltage. When an analog signal is transmitted over a long distance by a voltage method, voltage attenuation is caused by a signal source resistance, a direct current resistance of a transmission line, or the like, and the lower the input resistance of a signal receiving end is, the greater the voltage attenuation is. In order to avoid attenuation of signals in the transmission process, only the input resistance of the signal receiving end is increased, but the increase of the input resistance of the signal receiving end can reduce the anti-interference performance of a transmission line, and the transmission line is easy to be interfered by the outside world and has unstable signal transmission, so that the voltage output mode cannot be used for transmitting analog signals in a long distance, and the voltage output mode needs to be converted into current output. In many conventional industrial instruments, current coupling also requires that the output terminal convert the voltage output to a current output. Therefore, a voltage-current conversion circuit with high conversion precision can influence the sensing control effect to a great extent.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a metallurgical node temperature monitoring system based on power supply conversion circuit is provided, solve that blast furnace metallurgy channel temperature measurement node distributes extensively, monitoring distance is far away, on-the-spot supervision blast furnace high thermal environment is with high costs, production safety guarantee low grade problem, realize carrying out effective operation monitoring and optimization to the blast furnace production stage.
The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:
the utility model provides a metallurgical node temperature monitoring system based on power supply converting circuit which characterized in that: the system comprises a sensor network, a sink node, a monitoring terminal and a PC terminal, wherein the sensor network is arranged in a metallurgical channel of the blast furnace and consists of a plurality of sensor nodes for temperature detection, the sensor nodes are connected with the monitoring terminal through the sink node, and the monitoring terminal is connected with the PC terminal; the sensor node comprises a thermocouple sensor, a data preprocessing module, an STM32 controller module, an RS485 interface module, a data transmission module, a clock module, a data storage module and a power module, wherein the power module comprises a PV (photovoltaic) assembly and a power supply conversion circuit; the thermocouple sensor is connected with an STM32 controller module through a data preprocessing module, an RS485 interface module, a data transmission module, a clock module and a data storage module are respectively connected with an STM32 controller module, and the PV photovoltaic module is connected with an STM32 controller module through a power supply conversion circuit;
the power supply conversion circuit comprises a DC12V voltage input end, a first diode, a first capacitor, a second capacitor, an LM2576S-5.0 power supply chip, a second diode, a first inductor, a third capacitor, a 5V voltage output end, a 5V voltage input end, a fourth capacitor, a TPS7A7001 power supply chip, a first resistor, a second resistor, a fifth capacitor and a 3.3V voltage output end;
the voltage input end of the DC12V is respectively connected with the cathode of a first diode, one end of a first capacitor, one end of a second capacitor and the VIN end of the LM2576S-5.0 power supply chip, and the other end of the first diode is respectively connected with the other end of the first capacitor, the other end of the second capacitor, the EN # end of the LM2576S-5.0 power supply chip, the GND end of the LM2576S-5.0 power supply chip, the anode of the second diode and one end of a third capacitor and is grounded; the cathode of the second diode is respectively connected with the VOUT end of the LM2576S-5.0 power supply chip and one end of the first inductor, and the other end of the first inductor is respectively connected with the other end of the third capacitor, the FB end of the LM2576S-5.0 power supply chip and the 5V output end;
the 5V input end is respectively connected with one end of a fourth capacitor, the EN end of the TPS7A7001 power supply chip and the IN end of the TPS7A7001 power supply chip, the other end of the fourth capacitor is grounded, the GND end of the TPS7A7001 power supply chip is connected with one end of a first resistor, the other end of the first resistor is respectively connected with one end of a second resistor and the FB end of the TPS7A7001 power supply chip, the other end of the second resistor is respectively connected with one end of a fifth capacitor, the OUT end of the TPS7A7001 power supply chip and the 3.3V output end, and the other end of the fifth capacitor is grounded.
As a further preferred scheme of metallurgical node temperature monitoring system based on power supply converting circuit, be equipped with WH-NB74 module between sink node and the monitor terminal, the adoption of WH-NB74 module is based on WH-NB73NB-IoT network transmission module.
As the utility model relates to a metallurgical node temperature monitoring system's further preferred scheme based on power supply converting circuit, STM32 control module's chip model is STM32F103C8T 6.
As a further preferred aspect of the utility model relates to a metallurgical node temperature monitoring system based on power supply conversion circuit, the resistance of first resistance is 10 kilohms.
As a further preferred aspect of the utility model relates to a metallurgical node temperature monitoring system based on power supply conversion circuit, the resistance of second resistance is 56 kilohms.
As a further preferred scheme of the utility model relates to a metallurgical node temperature monitoring system based on power supply converting circuit, first electric capacity adopts 0.1 mu F electric capacity.
As a further preferred scheme of the metallurgical node temperature monitoring system based on power supply conversion circuit, the second electric capacity adopts 100 mu F electric capacity.
As a further preferred scheme of the metallurgical node temperature monitoring system based on power supply conversion circuit, the third electric capacity adopts 1000 mu F electric capacity.
As a further preferred scheme of metallurgical node temperature monitoring system based on power supply converting circuit, fourth electric capacity and fifth electric capacity all adopt 10 mu F electric capacity.
As a further preferred scheme of the utility model relates to a metallurgical node temperature monitoring system based on power supply converting circuit, first inductance adopts 100 mu H inductance.
The utility model adopts the above technical scheme to compare with prior art, have following technological effect:
1. the utility model discloses a blast furnace metallurgy channel temperature monitoring system based on wireless sensor network realizes the production environment monitoring of a plurality of metallurgical point temperature collection, intelligent processing and networking, has improved the reliability of on-the-spot high hot ambient temperature monitoring, further reduces metallurgical production process cost, has strengthened industrial production safety control;
2. the utility model discloses power module adopts power supply conversion circuit to carry out power control, and its output voltage is stable, and the conversion precision is high, and the effectual case output voltage that will converge converts DC12V to through LM2576S-5.0 and TPS7A7001 power chip with 12V voltage in proper order pressure drop to 5V and 3.3V.
Drawings
FIG. 1 is a system diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the sensor node structure of the present invention;
fig. 3 is a specific circuit diagram of the thermocouple sensor according to the present invention.
Detailed Description
The technical scheme of the utility model is further explained in detail with the attached drawings as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
A metallurgical node temperature monitoring system based on a power supply conversion circuit is disclosed, as shown in figure 1, and comprises a sensor network, a sink node, a monitoring terminal and a PC terminal, wherein the sensor network is arranged in a metallurgical channel of a blast furnace and consists of a plurality of sensor nodes for temperature detection, the sensor nodes are connected with the monitoring terminal through the sink node, and the monitoring terminal is connected with the PC terminal;
as shown in FIG. 2, the sensor node comprises a thermocouple sensor, a data preprocessing module, an STM32 system module, an RS485 interface module, a data transmission module, a clock module, a data storage module and a power module, the thermocouple sensor is connected with the STM32 system module through the data preprocessing module, and the RS485 interface module, the data transmission module, the clock module and the data storage module are respectively connected with the STM32 system module.
Preferably, a WH-NB74 module is arranged between the sink node and the monitor terminal, and the WH-NB74 module adopts a WH-NB73NB-IoT network transmission module.
Preferably, the chip model of the STM32 control module is STM32F103C8T 6.
The utility model discloses metallurgical channel temperature monitoring system of blast furnace realizes a plurality of metallurgical point temperature acquisition, intelligent processing and networked production environment monitoring based on wireless sensor network, has improved the reliability of on-the-spot high hot ambient temperature monitoring, further reduces metallurgical production process cost, has strengthened industrial production safety control.
The power module comprises a PV photovoltaic assembly and a power supply conversion circuit; the PV photovoltaic module is connected with the STM32 controller module through a power supply conversion circuit;
as shown in fig. 3, the power conversion circuit includes a DC12V voltage input terminal, a first diode, a first capacitor, a second capacitor, an LM2576S-5.0 power chip, a second diode, a first inductor, a third capacitor, a 5V voltage output terminal, a 5V voltage input terminal, a fourth capacitor, a TPS7a7001 power chip, a first resistor, a second resistor, a fifth capacitor, and a 3.3V voltage output terminal;
the voltage input end of the DC12V is respectively connected with the cathode of a first diode, one end of a first capacitor, one end of a second capacitor and the VIN end of the LM2576S-5.0 power supply chip, and the other end of the first diode is respectively connected with the other end of the first capacitor, the other end of the second capacitor, the EN # end of the LM2576S-5.0 power supply chip, the GND end of the LM2576S-5.0 power supply chip, the anode of the second diode and one end of a third capacitor and is grounded; the cathode of the second diode is respectively connected with the VOUT end of the LM2576S-5.0 power supply chip and one end of the first inductor, and the other end of the first inductor is respectively connected with the other end of the third capacitor, the FB end of the LM2576S-5.0 power supply chip and the 5V output end;
the 5V input end is respectively connected with one end of a fourth capacitor, the EN end of the TPS7A7001 power supply chip and the IN end of the TPS7A7001 power supply chip, the other end of the fourth capacitor is grounded, the GND end of the TPS7A7001 power supply chip is connected with one end of a first resistor, the other end of the first resistor is respectively connected with one end of a second resistor and the FB end of the TPS7A7001 power supply chip, the other end of the second resistor is respectively connected with one end of a fifth capacitor, the OUT end of the TPS7A7001 power supply chip and the 3.3V output end, and the other end of the fifth capacitor is grounded. The utility model discloses power module adopts power supply conversion circuit to carry out power control, and its output voltage is stable, and the conversion precision is high, and the effectual case output voltage that will converge converts DC12V to through LM2576S-5.0 and TPS7A7001 power chip with 12V voltage in proper order pressure drop to 5V and 3.3V.
Preferably, the first resistor has a resistance of 10 kilo-ohms.
Preferably, the resistance value of the second resistor is 56 kilo-ohms.
Preferably, the first capacitor is a 0.1 muF capacitor.
Preferably, the second capacitor is a 100 muF capacitor.
Preferably, the third capacitor is 1000 μ F capacitor.
Preferably, the fourth capacitor and the fifth capacitor are both 10 μ F capacitors.
Preferably, the first inductor is a 100 muH inductor.
It should be noted that the above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and all the technical effects of the present invention should be included in the protection scope of the present invention as long as the technical effects are achieved by the same means.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modifications made on the basis of the technical scheme according to the technical idea of the present invention fall within the protection scope of the present invention. While the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (9)
1. The utility model provides a metallurgical node temperature monitoring system based on power supply converting circuit which characterized in that: the system comprises a sensor network, a sink node, a monitoring terminal and a PC terminal, wherein the sensor network is arranged in a metallurgical channel of the blast furnace and consists of a plurality of sensor nodes for temperature detection, the sensor nodes are connected with the monitoring terminal through the sink node, and the monitoring terminal is connected with the PC terminal; the sensor node comprises a thermocouple sensor, a data preprocessing module, an STM32 controller module, an RS485 interface module, a data transmission module, a clock module, a data storage module and a power module, wherein the power module comprises a PV (photovoltaic) assembly and a power supply conversion circuit; the thermocouple sensor is connected with an STM32 controller module through a data preprocessing module, an RS485 interface module, a data transmission module, a clock module and a data storage module are respectively connected with an STM32 controller module, and the PV photovoltaic module is connected with an STM32 controller module through a power supply conversion circuit;
the power supply conversion circuit comprises a DC12V voltage input end, a first diode, a first capacitor, a second capacitor, an LM2576S-5.0 power supply chip, a second diode, a first inductor, a third capacitor, a 5V voltage output end, a 5V voltage input end, a fourth capacitor, a TPS7A7001 power supply chip, a first resistor, a second resistor, a fifth capacitor and a 3.3V voltage output end;
the voltage input end of the DC12V is respectively connected with the cathode of a first diode, one end of a first capacitor, one end of a second capacitor and the VIN end of the LM2576S-5.0 power supply chip, and the other end of the first diode is respectively connected with the other end of the first capacitor, the other end of the second capacitor, the EN # end of the LM2576S-5.0 power supply chip, the GND end of the LM2576S-5.0 power supply chip, the anode of the second diode and one end of a third capacitor and is grounded; the cathode of the second diode is respectively connected with the VOUT end of the LM2576S-5.0 power supply chip and one end of the first inductor, and the other end of the first inductor is respectively connected with the other end of the third capacitor, the FB end of the LM2576S-5.0 power supply chip and the 5V output end;
the 5V input end is respectively connected with one end of a fourth capacitor, the EN end of a TPS7A7001 power supply chip and the IN end of the TPS7A7001 power supply chip, the other end of the fourth capacitor is grounded, the GND end of the TPS7A7001 power supply chip is connected with one end of a first resistor, the other end of the first resistor is respectively connected with one end of a second resistor and the FB end of the TPS7A7001 power supply chip, the other end of the second resistor is respectively connected with one end of a fifth capacitor, the OUT end of the TPS7A7001 power supply chip and the 3.3V output end, and the other end of the fifth capacitor is grounded; a WH-NB74 module is arranged between the sink node and the monitoring terminal, and the WH-NB74 module adopts a WH-NB73NB-IoT network-based transmission module.
2. The system for monitoring the temperature of the metallurgical node based on the power supply conversion circuit is characterized in that: the chip model of the STM32 control module is STM32F103C8T 6.
3. The system for monitoring the temperature of the metallurgical node based on the power supply conversion circuit is characterized in that: the resistance value of the first resistor is 10 kilo-ohms.
4. The system for monitoring the temperature of the metallurgical node based on the power supply conversion circuit is characterized in that: the resistance value of the second resistor is 56 kilo-ohms.
5. The system for monitoring the temperature of the metallurgical node based on the power supply conversion circuit is characterized in that: the first capacitor adopts a 0.1 muF capacitor.
6. The system for monitoring the temperature of the metallurgical node based on the power supply conversion circuit is characterized in that: the second capacitor adopts a 100 muF capacitor.
7. The system for monitoring the temperature of the metallurgical node based on the power supply conversion circuit is characterized in that: the third capacitor adopts 1000 muF capacitor.
8. The system for monitoring the temperature of the metallurgical node based on the power supply conversion circuit is characterized in that: and the fourth capacitor and the fifth capacitor are both 10 mu F capacitors.
9. The system for monitoring the temperature of the metallurgical node based on the power supply conversion circuit is characterized in that: the first inductor adopts a 100 muH inductor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922256132.1U CN211319021U (en) | 2019-12-17 | 2019-12-17 | Metallurgical node temperature monitoring system based on power supply conversion circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922256132.1U CN211319021U (en) | 2019-12-17 | 2019-12-17 | Metallurgical node temperature monitoring system based on power supply conversion circuit |
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| CN211319021U true CN211319021U (en) | 2020-08-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657302A (en) * | 2022-03-04 | 2022-06-24 | 宁波市计量测试研究院(宁波新材料检验检测中心) | Blast furnace temperature on-line measuring system |
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2019
- 2019-12-17 CN CN201922256132.1U patent/CN211319021U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657302A (en) * | 2022-03-04 | 2022-06-24 | 宁波市计量测试研究院(宁波新材料检验检测中心) | Blast furnace temperature on-line measuring system |
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