CN114063680A - Distribution box environment controller based on 5G Internet of things communication technology - Google Patents
Distribution box environment controller based on 5G Internet of things communication technology Download PDFInfo
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- CN114063680A CN114063680A CN202111404018.4A CN202111404018A CN114063680A CN 114063680 A CN114063680 A CN 114063680A CN 202111404018 A CN202111404018 A CN 202111404018A CN 114063680 A CN114063680 A CN 114063680A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
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Abstract
The invention relates to a distribution box environment controller based on a 5G Internet of things communication technology, which is technically characterized in that: the temperature measuring device comprises a temperature measuring unit, an output unit, a metering unit and a communication processing unit; the temperature measuring unit converts the standard platinum thermal PT resistance value into a CMOS level signal and outputs the CMOS level signal to the communication processing unit; the output unit controls the on-off of a power supply of the environment control equipment to control the environment in the distribution box; the metering unit is connected with the power measuring contact of the output unit, measures the power consumption data of the environment control equipment controlled by the output unit, and sends the power consumption data to the communication processing unit; the communication processing unit receives and processes data, the power supply of the environment control equipment is controlled to be on and off through the output unit, data interaction is carried out between the communication processing unit and the cloud master station, and the environment control function of the distribution box is achieved. The invention has reasonable design, reduces the workload of operation and maintenance personnel for regular maintenance, avoids the environmental risk in the distribution box in remote areas and improves the overall reliability of the system.
Description
Technical Field
The invention belongs to the technical field of automatic control of power systems, and relates to a distribution box environment controller, in particular to a distribution box environment controller based on a 5G Internet of things communication technology.
Background
With the continuous development of power grid construction and the continuous increase of the number of substations, the pressure on maintenance workers is increased day by day. In the block terminal of transformer substation, adopt mechanical type or local temperature controller of electronic type to manage the incasement environment for a long time, lack the communication means and carry out real time monitoring to the incasement environmental condition.
Because the power grid coverage area in China is wide, the temperature and humidity in a large number of regions in seasons and the temperature and humidity difference between day and night are large, the action threshold of the temperature controller in the distribution box of the transformer substation needs to be flexibly controlled by combining weather data. The working state of the heating plate or the heating belt in the existing distribution box has a supervision blind area, and data closed loop cannot be achieved in distribution box environment control. Therefore, environmental control in the distribution box in the current transformer substation has potential risks, and how to effectively control the distribution box environment in the transformer substation is a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a distribution box environment controller based on a 5G Internet of things communication technology, and solves the problem of potential risks in the environment control in a distribution box in the existing transformer substation.
The invention solves the technical problems in the prior art by adopting the following technical scheme:
a distribution box environment controller based on a 5G Internet of things communication technology comprises a temperature measuring unit, an output unit, a metering unit and a communication processing unit;
the temperature measuring unit is connected with a standard platinum thermal PT resistor, converts the standard platinum thermal PT resistor value into a CMOS level signal and outputs the CMOS level signal to the communication processing unit;
the output unit is connected with the environment control equipment, and is used for controlling the on-off of a power supply of the environment control equipment and controlling the environment in the distribution box;
the metering unit is connected with the power measuring contact of the output unit, measures the power consumption data of the environment control equipment controlled by the output unit, and sends the power consumption data to the communication processing unit;
the communication processing unit receives and processes the CMOS level signal output by the temperature measuring unit, receives and processes the power consumption data sent by the metering unit, performs on-off control on a power supply of the environment control equipment through the output unit, performs data interaction with the cloud master station, and achieves the environment control function of the distribution box.
Further, the environment control device is a heating device and a ventilation device, and the heating device is a heater or a heating plate.
Further, the temperature measuring unit comprises two platinum heat PT resistor input interfaces, the platinum heat PT resistor input interfaces are amplifying circuits formed by a high-precision bridge and a precision operational amplifier, and the amplifying circuits convert platinum heat PT resistance values into CMOS level signals according to proportion and output the CMOS level signals to the communication processing unit.
Further, the standard platinum thermal PT resistor is a three-wire platinum thermal resistor.
Further, the standard platinum thermal PT resistor is a PT100 type high-precision platinum thermal resistor element.
Further, the output unit includes a relay coil holding circuit and a power relay; the relay coil holding circuit adopts a SI2301DS type transistor, and the power relay adopts an HF175-12-2HTF type relay.
Furthermore, the metering unit is formed by connecting an electric energy metering integrated chip, an analog sampling circuit and a signal isolation circuit; the electric energy metering integrated chip is an RN8209D type chip; the capacitance element in the analog sampling circuit is a +/-0.1% type high-precision element; the photoelectric coupler is an ICPL0611 photoelectric coupler.
Further, the communication processing unit adopts an AIR724UG type 5G wireless communication module.
The invention has the advantages and positive effects that:
1. according to the invention, the working condition of the environment control equipment is monitored by the built-in metering unit, the closed-loop monitoring function of the environment control data in the distribution box is realized, and the environment control quality in the distribution box is improved.
2. According to the invention, the communication processing unit supports flexible local control and remote cloud master station communication functions, receives a remote regulation and control instruction of the cloud master station, and combines external data sources such as weather and satellites to adjust the environment set value in the distribution box in time, so that the operation and maintenance workload is reduced.
3. The invention has reasonable design, solves the practical problem that the current distribution box environment controller of the power system cannot be remotely monitored, controlled and adjusted, lightens the workload of the operation and maintenance personnel for regular maintenance, and avoids the environmental risk in the distribution box in remote areas. Beneficial influence is generated on the operation of a power grid in the aspect of improving the operation environment of power equipment, and the overall reliability of the system is improved.
Drawings
FIG. 1 is a block diagram of the circuit of the present invention;
fig. 2 is a flow chart of the operation of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings.
A distribution box environment controller based on a 5G Internet of things communication technology is shown in figure 1 and comprises a temperature measuring unit, an output unit, a metering unit and a communication processing unit.
The temperature measuring unit comprises two platinum-heating PT resistor input interfaces and a three-wire platinum-heating resistor connected with the two platinum-heating PT resistor input interfaces; the platinum heat PT resistor input interface is an amplifying circuit formed by a high-precision bridge and a precision operational amplifier; the amplifying circuit proportionally converts the platinum heat PT resistance value into a CMOS level signal representing the measured temperature; the temperature measuring unit inputs the CMOS level signal of the measured temperature to the analog measurement pin of the communication processing unit.
In this embodiment, the amplifying circuit formed by the high-precision bridge and the precision operational amplifier is a circuit that converts a temperature measuring resistance value into a CMOS level signal by a circuit principle, and the amplifying circuit is a conventional circuit and will not be described in detail herein. The temperature measuring resistor adopted in the embodiment is PT100 type.
The output unit includes a relay coil holding circuit and a power relay. The relay coil holding circuit converts the control signal into a signal matched with the driving requirement of the coil, so that the on-off function of the relay is controlled; when the coil of the relay is switched on, connecting COM and NO contacts and disconnecting COM and NC contacts; when the coil is disconnected, the power relay connects the COM and NC contacts and disconnects the COM and NO contacts. The output unit controls the environment control equipment of the distribution box through the logic. The output end of the output unit is connected with the environment control equipment to realize the control function of the environment control equipment. The environmental control devices include heaters, heating plates, or ventilation devices.
In the embodiment, the relay coil holding circuit adopts an SI2301DS type transistor; the power relay adopts an HF175-12-2HTF type relay.
The metering unit comprises an electric energy metering integrated chip, an analog sampling circuit and a signal isolation circuit. The electric energy metering chip is internally provided with functions of high-precision operational amplifier, integral unit, pulse counting and the like; the analog sampling circuit consists of a voltage dividing resistor circuit, a differential subtraction circuit, a low-pass filter circuit and other sub-functional circuits; the signal isolation circuit consists of a low-power isolation power supply, a photoelectric coupler and other elements. The analog sampling circuit converts external 220V alternating current into a low-voltage small signal, and the low-voltage small signal is input into the electric energy metering chip. And amplifying, integrating and pulse counting the signals in the metering chip to obtain alternating current energy data. The signal isolation circuit electrically isolates the high-voltage circuit from other parts; the circuit realizes energy consumption measurement of the controlled heater, the heating plate and the ventilation equipment, and provides an isolated data interface for communication.
In this embodiment, the electric energy metering integrated chip is an RN8209D type chip; the capacitance element in the analog sampling circuit is a +/-0.1% type high-precision element; the photoelectric coupler is an ICPL0611 photoelectric coupler.
The communication processing unit comprises an AIR724UG type wireless communication module which is integrated with 4G/5G communication, analog acquisition, logic control and remote upgrading functions; the integrated 4G/5G communication supports the whole network communication signal; the remote control instruction of the cloud master station can be received by the remote control instruction of the cloud master station through the communication function of the remote cloud master station, and the environment set value in the distribution box is adjusted in time by combining external data sources such as weather and satellites, so that the operation and maintenance workload is reduced.
As shown in fig. 2, after the controller is powered on, the communication processing unit starts to operate, performs power-on self-test and initialization operations, and simultaneously reads information of a communication SIM card in the module to try to perform networking; meanwhile, an output circuit and a metering circuit in the controller are initialized and configured. After the series of operations are completed, the system enters a main control flow, periodically collects the ambient temperature, and sends state information such as the working state of a heater or a heating zone controlled by the system to a cloud master station through a 5G Internet of things. And waiting for the cloud master station to reply, and if the control reply exists, executing control instructions such as starting and stopping an external heater or a heating belt, resetting a local working threshold value, upgrading firmware and the like according to the reply content. And after the execution is finished, the system sleeps for a period of time, and then automatically awakens again to execute the steps.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (8)
1. The utility model provides a block terminal environmental controller based on 5G thing communication technology, its characterized in that: the temperature measuring device comprises a temperature measuring unit, an output unit, a metering unit and a communication processing unit;
the temperature measuring unit is connected with a standard platinum thermal PT resistor, converts the standard platinum thermal PT resistor value into a CMOS level signal and outputs the CMOS level signal to the communication processing unit;
the output unit is connected with the environment control equipment, and is used for controlling the on-off of a power supply of the environment control equipment and controlling the environment in the distribution box;
the metering unit is connected with the power measuring contact of the output unit, measures the power consumption data of the environment control equipment controlled by the output unit, and sends the power consumption data to the communication processing unit;
the communication processing unit receives and processes the CMOS level signal output by the temperature measuring unit, receives and processes the power consumption data sent by the metering unit, performs on-off control on a power supply of the environment control equipment through the output unit, performs data interaction with the cloud master station, and achieves the environment control function of the distribution box.
2. The distribution box environment controller based on 5G Internet of things communication technology of claim 1, wherein: the environment control equipment is heating equipment and ventilation equipment, and the heating equipment is a heater or a heating plate.
3. The distribution box environment controller based on 5G Internet of things communication technology of claim 1 or 2, wherein: the temperature measuring unit comprises two platinum heat PT resistor input interfaces, the platinum heat PT resistor input interfaces are amplifying circuits formed by a high-precision bridge and a precision operational amplifier, and the amplifying circuits convert platinum heat PT resistance values into CMOS level signals according to proportion and output the CMOS level signals to the communication processing unit.
4. The distribution box environment controller based on 5G Internet of things communication technology of claim 1 or 2, wherein: the standard platinum thermal PT resistor is a three-wire platinum thermal resistor.
5. The distribution box environment controller based on 5G Internet of things communication technology of claim 1 or 2, wherein: the standard platinum thermal PT resistor is a PT100 type high-precision platinum thermal resistor element.
6. The distribution box environment controller based on 5G Internet of things communication technology of claim 1 or 2, wherein: the output unit comprises a relay coil holding circuit and a power relay; the relay coil holding circuit adopts a SI2301DS type transistor, and the power relay adopts an HF175-12-2HTF type relay.
7. The distribution box environment controller based on 5G Internet of things communication technology of claim 1 or 2, wherein: the metering unit is formed by connecting an electric energy metering integrated chip, an analog sampling circuit and a signal isolation circuit; the electric energy metering integrated chip is an RN8209D type chip; the capacitance element in the analog sampling circuit is a +/-0.1% type high-precision element; the photoelectric coupler is an ICPL0611 photoelectric coupler.
8. The distribution box environment controller based on 5G Internet of things communication technology of claim 1 or 2, wherein: the communication processing unit adopts an AIR724UG type 5G wireless communication module.
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| CN202111404018.4A CN114063680A (en) | 2021-11-24 | 2021-11-24 | Distribution box environment controller based on 5G Internet of things communication technology |
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Application publication date: 20220218 |