CN112767670A - Wireless temperature measurement system - Google Patents
Wireless temperature measurement system Download PDFInfo
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- CN112767670A CN112767670A CN202110055394.0A CN202110055394A CN112767670A CN 112767670 A CN112767670 A CN 112767670A CN 202110055394 A CN202110055394 A CN 202110055394A CN 112767670 A CN112767670 A CN 112767670A
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- temperature
- collector
- power distribution
- voltage power
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
Abstract
The application relates to a wireless temperature measurement system, which comprises a collector, a server and a plurality of sensor nodes; the sensor nodes are arranged in the high-low voltage power distribution cabinets, and each high-low voltage power distribution cabinet is provided with at least one sensor node; each sensor node is connected with the server through the collector; the collector nodes are used for collecting temperature and humidity data of the high-low voltage power distribution cabinet and sending the temperature and humidity data to the collector; the collector is used for displaying the temperature and humidity data of each high-low voltage power distribution cabinet and sending the temperature and humidity data of each high-low voltage power distribution cabinet to the server. This wireless temperature measurement system only needs to set up a collector and just can accomplish humiture data measurement and demonstration to a plurality of high-low voltage power distribution cabinets, and system hardware layout is simple on the one hand, and on the other hand is convenient for patrolling and examining personnel and looks over, in time discovers the high-low voltage power distribution cabinet that appears unusually. In addition, sensor nodes in different power distribution cabinets can measure temperature and humidity simultaneously, and data acquisition speed can be increased.
Description
Technical Field
The invention relates to the technical field of temperature measurement, in particular to a wireless temperature measurement system.
Background
The high-low voltage power distribution cabinet is a power distribution device used for distributing, controlling, metering and connecting cables in a power supply system, is an important device in the power supply system, and the normal operation of the high-low voltage power distribution cabinet is the basis of normal and safe power supply, so that the detection of whether the high-low voltage power distribution cabinet is abnormal or not is very important. Some of the equipment inside it often can produce the heat in high-low voltage power distribution cabinet work, often can lead to high-low voltage power distribution cabinet to appear unusually when the heat is too high, consequently monitors the heat of output in the high-low voltage power distribution cabinet and is the key factor of confirming whether it exists unusually. At present, a method of arranging a temperature collector on each power distribution cabinet is generally adopted to collect the temperature of each power distribution cabinet so as to determine whether the temperature is abnormal or not, but the overall deployment cost of the system is high, and the collector in each high-low voltage power distribution cabinet needs to be checked during routing inspection, so that the method is time-consuming, labor-consuming and inconvenient.
Disclosure of Invention
In view of this, the invention provides a wireless temperature measurement system to solve the problems that the overall deployment cost of the temperature measurement system is high and the inspection is not facilitated in the prior art.
A wireless temperature measurement system comprises a collector, a server and a plurality of sensor nodes; the sensor nodes are arranged in high-voltage and low-voltage power distribution cabinets, and at least one sensor node is arranged in each high-voltage and low-voltage power distribution cabinet; each sensor node is connected with the server through the collector;
the collector node is used for collecting temperature and humidity data of the high-low voltage power distribution cabinet and sending the temperature and humidity data to the collector;
the collector is used for displaying the temperature and humidity data of the high-low voltage power distribution cabinets and sending the temperature and humidity data of the high-low voltage power distribution cabinets to the server.
The wireless temperature measurement system provided by the embodiment of the application comprises a collector, a server and a plurality of sensor nodes; the sensor nodes are arranged in the high-low voltage power distribution cabinets, and each high-low voltage power distribution cabinet is provided with at least one sensor node; each sensor node is connected with the server through the collector; the collector nodes are used for collecting temperature and humidity data of the high-low voltage power distribution cabinet and sending the temperature and humidity data to the collector; the collector is used for displaying the temperature and humidity data of each high-low voltage power distribution cabinet and sending the temperature and humidity data of each high-low voltage power distribution cabinet to the server. This wireless temperature measurement system only needs to set up a collector and just can accomplish humiture data measurement and demonstration to a plurality of high-low voltage power distribution cabinets, and system hardware layout is simple on the one hand, and on the other hand is convenient for patrolling and examining personnel and looks over, in time discovers the high-low voltage power distribution cabinet that appears unusually. In addition, the sensor nodes in different power distribution cabinets can measure temperature and humidity simultaneously, and uniformly transmit and store the temperature and humidity at the server, so that the data acquisition speed can be increased, and the centralized storage can be convenient for maintenance personnel to check.
Optionally, each sensor node is configured to receive a parameter setting instruction sent by the collector, and perform parameter setting according to the parameter setting instruction.
Optionally, each sensor node is configured to receive a sleep instruction sent by the collector, and enter a sleep state according to the sleep instruction until a next temperature and humidity data acquisition time is reached or a wake-up instruction sent by the collector is received.
Optionally, the sensor node includes a first microcontroller, a temperature and humidity sensor, and a first wireless radio frequency module; the temperature and humidity sensor is connected with the wireless radio frequency module through the first microcontroller;
the first microcontroller is used for controlling the temperature and humidity sensor to collect temperature and humidity data of the high-voltage power distribution cabinet and the low-voltage power distribution cabinet, and the temperature and humidity data are sent to the collector through the first wireless radio frequency module.
Optionally, the sensor node further includes a first power supply module, and the first power supply module is connected to the temperature and humidity sensor, the first microcontroller, and the first wireless radio frequency module, respectively.
Optionally, the collector includes a remote sending module, a second microcontroller and a second wireless radio frequency module; the second microcontroller is respectively connected with the remote sending module and the second wireless radio frequency module;
the second microcontroller is used for controlling the second wireless radio frequency module and the first wireless radio frequency module to establish an LoRa networking, receiving the temperature and humidity data through the LoRa networking and sending the temperature and humidity data to the server through the remote sending module.
Optionally, the collector further comprises an interactive display module; the interactive display module is connected with the second microcontroller;
the interactive display module is used for displaying temperature and humidity data of the high-low voltage power distribution cabinets and indication information of the collectors, and setting parameters of the collectors or the sensor nodes.
Optionally, the interactive display module comprises an LCD screen, keys and LED indicator lights; the LCD screen, the keys and the LED indicator lamps are respectively connected with the second microcontroller;
the LCD screen is used for displaying temperature and humidity data of the high-voltage and low-voltage power distribution cabinets;
the LED indicating lamp is used for displaying the indicating information of the collector;
the key is used for setting parameters of the collector or the sensor node.
Optionally, the collector further comprises a second power supply module; the second power supply module is respectively connected with the remote sending module, the second microcontroller and the second wireless radio frequency module.
Optionally, the first wireless radio frequency module and/or the second wireless radio frequency module is an SX1212 radio frequency chip.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a wireless temperature measurement system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a sensor node structure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a workflow of a sensor node according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a collector according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a temperature and humidity data acquisition time sequence of a sensor node according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A wireless temperature measurement system comprises a collector, a server and a plurality of sensor nodes; the sensor nodes are arranged in the high-low voltage power distribution cabinets, and each high-low voltage power distribution cabinet is provided with at least one sensor node; each sensor node is connected with the server through the collector; the collector nodes are used for collecting temperature and humidity data of the high-low voltage power distribution cabinet and sending the temperature and humidity data to the collector; the collector is used for displaying the temperature and humidity data of each high-low voltage power distribution cabinet and sending the temperature and humidity data of each high-low voltage power distribution cabinet to the server.
Specifically, as shown in fig. 1, the wireless temperature measurement system includes a collector, a server, and a plurality of sensor nodes. The collector is arranged outside the high-low voltage power distribution cabinet and is responsible for building a wireless network, receiving temperature and humidity data collected by each sensor node, displaying and remotely sending the temperature and humidity data (namely sending the temperature and humidity data to a server). The sensor nodes are mainly arranged in the high-voltage and low-voltage power distribution cabinets, a plurality of sensor nodes can be arranged in each high-voltage and low-voltage power distribution cabinet, each sensor node can collect temperature and humidity data in the high-voltage and low-voltage power distribution cabinet, network links are established with the collectors, and the collected temperature and humidity data are sent to the collectors. In addition, the collector can also inquire temperature and humidity data of different sensor nodes in different power distribution cabinets, and simultaneously can also send the temperature and humidity data of each high-low voltage power distribution cabinet to the server. The temperature and humidity data of a plurality of power distribution cabinets can be displayed and inquired by adopting one collector, so that maintenance personnel can check the working condition of each power distribution cabinet in time; the temperature and humidity data of all power distribution cabinets are stored in the server, so that the data can be managed conveniently, and related personnel can call and look up the data conveniently.
The temperature and humidity data can be used for determining heat in the high-low voltage power distribution cabinet, and whether the high-low voltage power distribution cabinet is abnormal or not can be determined through the heat, such as faults and the like.
Optionally, the server may be a cloud server.
The wireless temperature measurement system provided by the embodiment of the application comprises a collector, a server and a plurality of sensor nodes; the sensor nodes are arranged in the high-low voltage power distribution cabinets, and each high-low voltage power distribution cabinet is provided with at least one sensor node; each sensor node is connected with the server through the collector; the collector nodes are used for collecting temperature and humidity data of the high-low voltage power distribution cabinet and sending the temperature and humidity data to the collector; the collector is used for displaying the temperature and humidity data of each high-low voltage power distribution cabinet and sending the temperature and humidity data of each high-low voltage power distribution cabinet to the server. This wireless temperature measurement system only needs to set up a collector and just can accomplish humiture data measurement and demonstration to a plurality of high-low voltage power distribution cabinets, and system hardware layout is simple on the one hand, and on the other hand is convenient for patrolling and examining personnel and looks over, in time discovers the high-low voltage power distribution cabinet that appears unusually. In addition, the sensor nodes in different power distribution cabinets can measure temperature and humidity simultaneously, and uniformly transmit and store the temperature and humidity at the server, so that the data acquisition speed can be increased, and the centralized storage can be convenient for maintenance personnel to check.
In one embodiment, each sensor node is configured to receive a parameter setting instruction sent by the collector, and perform parameter setting according to the parameter setting instruction.
The parameter setting instruction refers to some information for instructing the collector to perform initialization operation, such as data type, collection frequency, time interval, collection time each time, network parameter setting, and the like acquired by the sensor node. By adopting the method, the sensor nodes can be intelligently set, so that the data acquisition mode is more diversified; and also facilitates parameter modification.
In one embodiment, each sensor node is configured to receive a sleep instruction sent by the collector, and enter a sleep state according to the sleep instruction until a next temperature and humidity data acquisition time is reached or a wake-up instruction sent by the collector is received.
The sleep instruction refers to some information indicating that the sensor node enters a sleep state. The sleep state is also referred to as a standby state or a low power consumption state. Because the sensor node usually collects the temperature and humidity data at regular time (or at intervals) and does not need to collect in real time, if the sensor node is always in a working state, the sensor node can cause self-loss and resource waste. Therefore, when each sensor node does not need to collect temperature and humidity data, the sensor node can enter a dormant state and awaken the sensor node when the temperature and humidity data need to be collected. Optionally, the sensor node enters the dormant state automatically after collecting the temperature and humidity data once and sending the temperature and humidity data to the collector, or enters the sensor node when receiving a dormant instruction sent by the collector. The sensor node can enter the awakening state automatically when the temperature and humidity data acquisition time of the next time arrives, or can enter the awakening state after receiving an awakening instruction sent by the acquirer, and the awakening state is not limited.
In one embodiment, the sensor node comprises a first microcontroller, a temperature and humidity sensor and a first wireless radio frequency module; the temperature and humidity sensor is connected with the wireless radio frequency module through the first microcontroller; the first microcontroller is used for controlling the temperature and humidity sensor to collect temperature and humidity data of the high-low voltage power distribution cabinet and sending the temperature and humidity data to the collector through the first wireless radio frequency module.
In one embodiment, the sensor node further includes a first power supply module, and the first power supply module is respectively connected to the temperature and humidity sensor, the first microcontroller, and the first wireless radio frequency module.
In one embodiment, the first wireless radio frequency module may be an SX1212 radio frequency chip.
Referring to fig. 2, the sensor node includes a first microcontroller, a temperature and humidity sensor, a first wireless rf module, and a first power supply module. Optionally, the first microcontroller may employ a low power consumption STM32L051C8T6 microcontroller; the temperature and humidity sensor can adopt an SHT20 temperature and humidity sensor, wherein an SHT20 can adopt an analog IIC interface for communication and is connected with two GPIO ports of the first microcontroller. The first wireless radio frequency module can adopt an SX1212 radio frequency chip and adopts an SPI port to be connected with four GPIO ports of the first microcontroller.
In an optional implementation manner, the first power supply module may be a power supply module, and may provide a +3.3V working voltage for the first microcontroller, and provide a working voltage for the temperature and humidity sensor and the first wireless radio frequency module.
In addition, as shown in fig. 3, the workflow of the sensor node is as follows: after the modules of the sensor node are powered on and initialized, a communication link is established with a collector (namely a second wireless radio frequency module) through a wireless radio frequency module SX1212 to establish an LoRa network, and the LoRa network is set; if the communication link is successful, temperature and humidity data acquired by the temperature and humidity sensor SHT20 are transmitted to the collector, meanwhile, a downlink instruction (sent by the collector) can be received, then the collector enters a low power consumption mode, and the collector wakes up again after the next acquisition time and works repeatedly; and if the communication link fails, reestablishing the communication link until the reconnection number is greater than the maximum connection number.
In one embodiment, the collector comprises a remote transmitting module, a second microcontroller and a second wireless radio frequency module; the second microcontroller is respectively connected with the remote sending module and the second wireless radio frequency module; the second microcontroller is used for controlling the second wireless radio frequency module and the first wireless radio frequency module to establish an LoRa networking, receiving temperature and humidity data through the LoRa networking and sending the temperature and humidity data to the server through the remote sending module.
In one embodiment, the collector further comprises an interactive display module; the interactive display module is connected with the second microcontroller; the interactive display module is used for displaying temperature and humidity data of each high-low voltage power distribution cabinet and indication information of the collector, and setting parameters of the collector or the sensor node.
In one embodiment, the interactive display module comprises an LCD screen, keys and LED indicator lights; the LCD screen, the keys and the LED indicator lamp are respectively connected with the second microcontroller; the LCD screen is used for displaying temperature and humidity data of each high-low voltage power distribution cabinet; the LED indicator light is used for displaying the indicating information of the collector; the key is used for setting parameters of the collector or the sensor node.
In one embodiment, the collector further comprises a second power supply module; the second power supply module is respectively connected with the remote sending module, the second microcontroller and the second wireless radio frequency module.
In one embodiment, the second radio frequency module is an SX1212 radio frequency chip.
Referring to fig. 4, the collector includes a second microcontroller, a second wireless radio frequency module, an interactive display module, a remote transmission module, and a second power supply module. Alternatively, the second microcontroller may be a microcontroller of the high performance microcontroller STM32F030C8T 6; the second wireless radio frequency module can adopt an SX1212 radio frequency chip, and the SX1212 radio frequency chip can adopt the SPI to link to each other with four GPIO ports of second microcontroller. In addition, the collector is responsible for establishing and maintaining the LoRa network, and specifically, the second wireless radio frequency module is connected with the first wireless radio frequency module to form the LoRa networking.
The LoRa is the most important communication mode in LPWAN (Low Power wide Area Network), and the LoRa technology is an ultra-long distance wireless transmission scheme based on a spread spectrum technology, and the technology has the characteristics of long distance, Low Power consumption (long battery life), multiple nodes and Low cost. By adopting the spread spectrum communication technology based on LoRa, the shielding of the high-low voltage power distribution cabinet to wireless signals can be reduced, and the reliability of the system is enhanced.
After different sensor nodes and the collector construct the LoRa network, the sensor nodes periodically send the collected data to the collector, the time used by each sensor node period is the same, and the collection periods are also the same. Different nodes send data to the collector in turn according to the sequence of joining the network, and the timing diagram is shown in fig. 5. The more nodes in the LoRa network, the longer the time required for the corresponding sensor nodes to acquire one time.
In an alternative embodiment, the interactive display module comprises an LCD screen, keys and LED indicator lights; the LCD screen can conveniently display the data of each sensor node, and the keys can be used for switching the content to be displayed and setting the state of acquisition parameters, wherein the acquisition parameters can be parameters of the sensor nodes or parameters of the acquisition device; the LED indicating lamp can indicate the working state of the collector and indicate the alarm information of each node.
In addition, an LCD screen in the interactive display module is communicated with the second microcontroller by adopting a parallel interface and is connected with a plurality of GPIO ports of the second microcontroller.
Optionally, the number of the keys of the interactive display module may be four, wherein the four keys are connected with the pull-up resistor and then connected with the four GPIO ports of the first microcontroller.
In an optional implementation mode, the LED indicator lamps in the interactive display module are connected with the GPIO ports of the first microcontroller. Alternatively, the LED indicator light may comprise three different colors of red, yellow and green. The red light is on to indicate error reporting information, the yellow light is on to indicate warning information, and the green light is on to indicate normal work.
In an alternative embodiment, the remote sending module may be a wireless communication module (e.g., a 4G communication module, a 5G communication module, etc.), a traffic card is inserted into the card slot, and is connected to the cellular network, so that the data collected by the collector may be sent to the (cloud) server. In addition, the remote sending module is communicated with the second microcontroller by adopting a serial port and is connected with a GPIO port of a serial port peripheral of the microcontroller.
In an alternative embodiment, the second power supply module may provide an operating voltage of +3.3V for the STM32F030C8T6 high performance microcontroller, and simultaneously provide an operating voltage for the second radio frequency module, the interactive display module and the remote transmission module. The second power supply module can adopt a power-taking coil to take power from the high-low voltage power distribution cabinet through electromagnetic induction or directly supply power through a wired mode.
By adopting the scheme, the wireless temperature measurement system applicable to the high-low voltage distribution box can be quickly constructed at low cost, and the temperature and humidity data of the high-low voltage distribution box can be conveniently collected.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A wireless temperature measurement system is characterized by comprising a collector, a server and a plurality of sensor nodes; the sensor nodes are arranged in high-voltage and low-voltage power distribution cabinets, and at least one sensor node is arranged in each high-voltage and low-voltage power distribution cabinet; each sensor node is connected with the server through the collector;
the collector node is used for collecting temperature and humidity data of the high-low voltage power distribution cabinet and sending the temperature and humidity data to the collector;
the collector is used for displaying the temperature and humidity data of the high-low voltage power distribution cabinets and sending the temperature and humidity data of the high-low voltage power distribution cabinets to the server.
2. The wireless temperature measurement system of claim 1, wherein each sensor node is configured to receive a parameter setting instruction sent by the collector, and perform parameter setting according to the parameter setting instruction.
3. The wireless temperature measurement system according to claim 2, wherein each sensor node is configured to receive a sleep instruction sent by the collector, and enter a sleep state according to the sleep instruction until a next temperature and humidity data acquisition time is reached or a wake-up instruction sent by the collector is received.
4. The wireless thermometry system of any one of claims 1-3, wherein the sensor node comprises a first microcontroller, a temperature and humidity sensor, and a first wireless radio frequency module; the temperature and humidity sensor is connected with the wireless radio frequency module through the first microcontroller;
the first microcontroller is used for controlling the temperature and humidity sensor to collect temperature and humidity data of the high-voltage power distribution cabinet and the low-voltage power distribution cabinet, and the temperature and humidity data are sent to the collector through the first wireless radio frequency module.
5. The wireless temperature measurement system of claim 4, wherein the sensor node further comprises a first power supply module, and the first power supply module is respectively connected to the temperature and humidity sensor, the first microcontroller and the first wireless radio frequency module.
6. The wireless temperature measurement module of claim 5, wherein the collector comprises a remote transmission module, a second microcontroller and a second wireless radio frequency module; the second microcontroller is respectively connected with the remote sending module and the second wireless radio frequency module;
the second microcontroller is used for controlling the second wireless radio frequency module and the first wireless radio frequency module to establish an LoRa networking, receiving the temperature and humidity data through the LoRa networking and sending the temperature and humidity data to the server through the remote sending module.
7. The wireless thermometry system of claim 6, wherein the collector further comprises an interactive display module; the interactive display module is connected with the second microcontroller;
the interactive display module is used for displaying temperature and humidity data of the high-low voltage power distribution cabinets and indication information of the collectors, and setting parameters of the collectors or the sensor nodes.
8. The wireless thermometry system of claim 7, wherein the interactive display module comprises an LCD screen, buttons, and LED indicator lights; the LCD screen, the keys and the LED indicator lamps are respectively connected with the second microcontroller;
the LCD screen is used for displaying temperature and humidity data of the high-voltage and low-voltage power distribution cabinets;
the LED indicating lamp is used for displaying the indicating information of the collector;
the key is used for setting parameters of the collector or the sensor node.
9. The wireless temperature measurement system of claim 8, wherein the collector further comprises a second power supply module; the second power supply module is respectively connected with the remote sending module, the second microcontroller and the second wireless radio frequency module.
10. The wireless temperature measurement system of any one of claims 6-9, wherein the first wireless radio frequency module and/or the second wireless radio frequency module is an SX1212 radio frequency chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110055394.0A CN112767670A (en) | 2021-01-15 | 2021-01-15 | Wireless temperature measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110055394.0A CN112767670A (en) | 2021-01-15 | 2021-01-15 | Wireless temperature measurement system |
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| Publication Number | Publication Date |
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| CN112767670A true CN112767670A (en) | 2021-05-07 |
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| CN202110055394.0A Pending CN112767670A (en) | 2021-01-15 | 2021-01-15 | Wireless temperature measurement system |
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| CN (1) | CN112767670A (en) |
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2021
- 2021-01-15 CN CN202110055394.0A patent/CN112767670A/en active Pending
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