CN111664958A - Wireless temperature measurement system and temperature measurement method thereof - Google Patents
Wireless temperature measurement system and temperature measurement method thereof Download PDFInfo
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- CN111664958A CN111664958A CN202010478783.XA CN202010478783A CN111664958A CN 111664958 A CN111664958 A CN 111664958A CN 202010478783 A CN202010478783 A CN 202010478783A CN 111664958 A CN111664958 A CN 111664958A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
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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
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2215/00—Details concerning sensor power supply
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2219/00—Thermometers with dedicated analog to digital converters
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Abstract
The invention discloses a wireless temperature measurement system and a temperature measurement method thereof, which belong to the technical field of electric power and comprise the following steps: the temperature collection device comprises a main temperature collection unit and a plurality of slave temperature sensing units, wherein the slave temperature sensing units are connected with a measured object and used for measuring the temperature of the measured object, the slave temperature sensing units are connected with the main temperature collection unit in a wireless mode so as to send the collected temperature of the measured object to the main temperature collection unit, and the main temperature collection unit is connected with a host to send collected temperature information to the host. The invention can realize real-time temperature measurement of a plurality of measured objects by using a one-master multi-slave mode, and the slave temperature sensing unit is wirelessly connected with the master temperature collecting unit, so that the transmission and the use are convenient.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a wireless temperature measurement system and a temperature measurement method thereof.
Background
With the rapid development of economy and the continuous improvement of the technological level in China, power equipment is more and more abundant, and particularly high-precision equipment is more and more abundant, and the equipment has very high requirements on temperature. Different temperatures have great influence on equipment, such as transformer contacts, the real-time temperature reflects the power load condition, and if the contact temperature is increased under the high load condition, the temperature increase can influence the performance of the transformer, so that the transformer fails, and finally, some immeasurable economic losses such as power failure and the like are caused.
With the development of an intelligent society, the traditional mode of manually reading a temperature instrument panel cannot cope with the society which is rapidly developed at present. The evolved wired connection host carries out a measurement mode, and the mode has high requirements on wiring planning, construction and the like; the wireless temperature measurement sending mode has high requirements on the hardware of the master station and is inflexible; the method for judging the temperature of the measured object by the image recognition instrument panel of the inspection robot or the infrared camera has high requirements on the measured object, needs to be supported by temperature sensor hardware and can be observed on the measured place.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned drawbacks of the background art, and to provide a simple, effective and general-purpose wireless temperature measurement method for a host system.
In order to achieve the above purpose, the present invention adopts a wireless temperature measurement system, which includes a master temperature collection unit and a plurality of slave temperature sensing units, wherein the slave temperature sensing units are connected with a measured object for measuring the temperature of the measured object, the slave temperature sensing units are wirelessly connected with the master temperature collection unit for sending the collected temperature of the measured object to the master temperature collection unit, and the master temperature collection unit is connected with a host for sending the collected temperature information to the host.
Further, the slave temperature sensing unit comprises a temperature sensor, a temperature detection circuit, a first MCU, a first power management circuit, a lithium battery voltage measurement circuit, a first watchdog circuit, a first RF wireless transmission module and a first RF antenna;
the temperature sensor is installed on the measured object, the temperature sensor is connected with the first MCU through the temperature detection circuit, the first watchdog circuit is connected with the output end of the first MCU, the lithium battery is connected with the input end of the first MCU through the lithium battery voltage measurement circuit, the output end of the first MCU is connected with the main temperature collection unit through the first RF wireless transmission module and the first RF antenna
The lithium battery output end is connected with a first power management circuit, and the first power management circuit is respectively connected with the temperature detection circuit, the first watchdog circuit, the lithium battery voltage measurement circuit, the first MCU and the first RF wireless transmission module to supply power to the lithium battery.
Further, the first MCU is a low power consumption MCU.
Furthermore, the temperature detection circuit comprises a first voltage division circuit, a voltage follower circuit and a mos tube switch circuit, wherein the output of the first voltage division circuit is connected with the voltage follower circuit, and the voltage follower circuit and the mos tube switch circuit are both connected with the first MCU.
Furthermore, the lithium battery voltage measuring circuit adopts a second voltage division circuit, the second voltage division circuit comprises a resistor R10, a resistor R11 and a resistor R12, the resistor R11 is connected with the resistor R10 through a plug connector, the resistor R12 is connected with the resistor R10 in series, two ends of the resistor R12 are connected with a capacitor C16 in parallel, and one end of the capacitor C16 is connected with an ADC pin of the first MCU.
Furthermore, the main temperature collection unit comprises a USB interface, a USB-to-serial port, a second MCU, a second watchdog circuit, a second power management circuit, a second RF wireless transmission module and a second RF antenna;
the second RF wireless transmission module is connected with the first RF antenna through a second RF antenna, the output end of the second RF wireless transmission module is connected with a second MCU, the output of the second MCU is connected with the host through a USB-to-serial port and a USB interface, and the output of the second MCU is connected with a second watchdog circuit;
the USB interface is connected with the input end of the second power management circuit, and the output end of the second power management circuit is respectively connected with the second MCU, the second watchdog circuit, the second RF wireless transmission module and the USB-to-serial port to supply power to the second MCU, the second watchdog circuit, the second RF wireless transmission module and the USB-to-serial port.
Furthermore, the first watchdog circuit and the second watchdog circuit both adopt watchdog chip circuits.
Further, the first power management circuit comprises a 3.3V low dropout regulator and a 2.5V reference voltage stabilizing circuit, and the second power management circuit adopts a 3.3V low dropout regulator.
In another aspect, a method for using a wireless thermometry system is provided, comprising:
from the temperature sensing unit, the first MCU operates the first watchdog circuit to feed the watchdog;
the temperature detection circuit stores the temperature value of the measured object acquired by the temperature sensor in the first MCU, and the lithium battery voltage measurement circuit measures the voltage of the lithium battery and stores the voltage in the first MCU;
the first RF wireless transmission module is set to be in a receiving mode, receives an information reading instruction sent by the main temperature collection unit in the receiving mode process, sends the voltage of the lithium battery and the temperature value of the object to be measured to the main temperature collection unit according to the information reading instruction, and enters a sleeping state after the sending is finished;
and the main temperature collecting unit stores the temperature value of the measured object and the voltage of the lithium battery in a second MCU Modbus table so that the host computer can read the temperature value and the voltage of the lithium battery through a USB interface by using a Modbus protocol.
Further, still include:
from the temperature sensing unit, the first MCU operates the first watchdog circuit to feed the watchdog;
the temperature detection circuit stores the temperature value of the measured object acquired by the temperature sensor in the first MCU, and the lithium battery voltage measurement circuit measures the voltage of the lithium battery and stores the voltage in the first MCU;
the first MCU sends the temperature value of the object to be measured and the voltage of the lithium battery to the main temperature collecting unit in a wireless transmission mode, and enters a low-power-consumption sleep state after waiting for the response of the main temperature collecting unit;
and the main temperature collecting unit stores the temperature value of the measured object and the voltage of the lithium battery in a second MCU Modbus table so that the host computer can read the temperature value and the voltage of the lithium battery through a USB interface by using a Modbus protocol.
Compared with the prior art, the invention has the following technical effects: according to the invention, the temperature sensing unit is powered by the lithium battery, so that the field installation is convenient, the first MCU is a low-power-consumption MCU, the temperature information of the measured object and the electric quantity information of the lithium battery are acquired by adopting an ultra-low-power-consumption mode, the service time is long, and the later maintenance is convenient. The main temperature collection unit is connected with the host through a USB hardware socket and a Modbus software interface, so that the type of the host can be set more flexibly.
Drawings
The following detailed description of embodiments of the invention refers to the accompanying drawings in which:
FIG. 1 is a block diagram of a wireless thermometry system;
FIG. 2 is a circuit configuration diagram of the temperature detection circuit;
FIG. 3 is a circuit configuration diagram of a lithium battery voltage measuring circuit;
FIG. 4 is a circuit configuration diagram of a watchdog circuit;
FIG. 5 is a circuit configuration diagram of a power management circuit;
FIG. 6 is a flow chart of an over-the-air matching pattern slave device;
fig. 7 is a flow chart of an over-the-air active reporting mode slave device.
Detailed Description
To further illustrate the features of the present invention, refer to the following detailed description of the invention and the accompanying drawings. The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present disclosure.
As shown in fig. 1, the present embodiment discloses a wireless temperature measurement system, which includes: the temperature measurement device comprises a main temperature collection unit 13 and a plurality of slave temperature sensing units 2, wherein the slave temperature sensing units 2 are connected with a measured object 1 and used for measuring the temperature of the measured object 1, the slave temperature sensing units 2 are connected with the main temperature collection unit 13 in a wireless mode so as to send the collected temperature of the measured object 1 to the main temperature collection unit 13, and the main temperature collection unit 13 is connected with a host computer so as to send collected temperature information to the host computer 12.
In the embodiment, a master-slave mode is used, so that real-time temperature measurement of a plurality of measured objects 1 can be realized, RF wireless connection is used between the slave temperature sensing unit 2 and the master temperature collecting unit 13, ID number identification is realized, and transmission and use are convenient.
Further, the slave temperature sensing unit 2 comprises a temperature sensor 21, a temperature detection circuit 3, a first MCU5, a first power management circuit 8, a lithium battery 9, a lithium battery voltage measurement circuit 10, a first watchdog circuit 11, a first RF wireless transmission module 6 and a first RF antenna 4;
The output end of the lithium battery 9 is connected with the first power management circuit 8, and the first power management circuit 8 is respectively connected with the temperature detection circuit 3, the first watchdog circuit 11, the voltage measurement circuit of the lithium battery 9, the first MCU5 and the first RF wireless transmission module 6 to supply power for the first power management circuit 8.
Wherein the first MCU5 is a low power consumption MCU.
It should be noted that the temperature sensing unit 2 is powered by the lithium battery 9, so that field installation is facilitated; the low-power consumption design is adopted to get rid of the problem of power taking, the battery can be used in a charged state for more than 5 years, and the battery power information can be uploaded to facilitate maintenance.
Further, as shown in fig. 2, the temperature detection circuit 3 includes a first voltage division circuit 31, a voltage follower circuit 32, and a mos tube switch circuit 33; the TEMP _ PWR and TEMPH _ PWR are respectively connected to pins 5 of the first MCU5, the first MCU5 can control the high and low levels to control the mos transistor switch circuit 33, and the 10 kiloohm resistor R15, the 330 ohm resistor R16 and the thermistor R17 are selected to form a first voltage division circuit. The thermistor R17 can convert the temperature change into the voltage change at two ends of the thermistor R17 according to the characteristics that the self resistance value is different according to different external temperatures and the ohm theory. The voltage at TEMP _ AD reflects the voltage of the thermistor R17 by forming a voltage follower circuit according to the characteristics of the power amplifier. The TEMP _ AD is connected to an ADC (analog-to-digital converter) pin of the first MCU5, and can calculate a voltage value and a temperature value according to an algorithm between the voltage and the temperature. The first MCU5 wakes up in the sleep mode, changes the levels of TEMP _ PWR and TEMP _ PWR to turn on the MOS switch circuit 33, and reads the voltage across the thermistor R17 through TEMP _ AD according to the voltage divider circuit 32 and the voltage follower circuit 31 to calculate the current temperature. By judging the difference of the two voltage-dividing resistors of the ON TEMP _ AD and TEMPH _ PWR, the temperature resolution and range of the two temperature values can be selected according to different use environments. The TEMP _ PWR temperature resolution is small, and the temperature acquisition range is large. The TEMPH _ PWR has larger temperature resolution and wider temperature acquisition range.
Further, as shown in fig. 3, the voltage measuring circuit of the lithium battery 9 adopts a second voltage dividing circuit, divides the battery voltage through R10 and R12, calculates the battery voltage through R12 according to ohm's law, and connects the DC-BAT to the MCU ADC pin to read out the R12 voltage. And waking up the MCU in a sleep mode, and reading the voltage of R12 to calculate the voltage of the battery after measuring the temperature.
Further, the main temperature collecting unit 13 includes a USB interface 14, a USB to serial port 15, a second MCU17, a second watchdog circuit 16, a second power management circuit 18, a second RF wireless transmission module 19, and a second RF antenna 20;
the second RF wireless transmission module 19 is connected to the first RF antenna 4 through the second RF antenna 20, the output end of the second RF wireless transmission module 19 is connected to the second MCU17, the output of the second MCU17 is connected to the host 12 through the USB serial-to-serial port 15 and the USB interface 14, and the output of the second MCU17 is connected to the second watchdog circuit 16;
the USB interface 14 is connected to the input end of the second power management circuit 18, and the output end of the second power management circuit 18 is connected to the second MCU17, the second watchdog circuit 16, the second RF wireless transmission module 19, and the USB serial port 15, respectively, to supply power thereto.
It should be noted that the master temperature aggregation unit 13 adopts a USB hardware interface, and the Modbus software interface is connected to the host 12. Make the host computer 12 kind set up more nimble, use more openly, can with including computer, cell-phone, panel computer, TTU (intelligent distribution transform terminal), patrol and examine host computer 12 that robot etc. possess USB interface 14 and connect, and main temperature collects unit 13 and uses the USB power supply, and is general convenient, reduces the use degree of difficulty.
The main temperature collection unit 13 adopts two working modes of active reporting and air matching for interaction, so that the use is flexible, the power consumption is reduced, and the product stability is improved.
The air matching mode is as shown in fig. 6, the temperature sensing unit 2 enters a sleep ultra-low power consumption state, a sleep period is reached, the module wakes up and is converted into a working state, a watchdog is fed in the first step, temperature measurement of the temperature sensor 21 is carried out in the second step, battery voltage detection is carried out in the third step, the RF wireless module is set to be a receiving mode in the fourth step, and the receiving overtime module enters the sleep state. In the receiving mode, the main temperature collecting unit 13 reads the information, the temperature and battery voltage information is sent to the temperature collecting unit, and the module enters a sleep state. The mode is suitable for a moving object to read temperature data, such as an inspection robot inserted into the temperature collection unit, a mobile phone inserted into the temperature collection unit, manual inspection and the like.
As shown in fig. 7, the active reporting mode is that the slave temperature sensing unit 2 enters a sleep ultra-low power consumption state, a sleep cycle is reached, the module wakes up and is converted into a working state, a watchdog is used for feeding a dog in the first step, the temperature sensor 21 measures the temperature in the second step, the battery voltage is detected in the third step, the module sends the collected temperature information of the object to be measured 1 and the electric quantity information of the lithium battery 9, the main temperature collecting unit 13 receives the response after the sending is finished, and the module enters a low power consumption sleep mode. If the response is not received, the module continues to transmit until the retransmission times are exceeded, and the module enters a low-power-consumption sleep mode. This mode is suitable for mounting without moving the host 12 near the slave module, such as a TTU plugged into a temperature sink unit, a desktop computer plugged into a temperature sink unit, etc.
Further, as shown in fig. 4, the first watchdog circuit 11 and the second watchdog circuit 16 each include a watchdog chip circuit. The power management circuit supplies power to the watchdog chip, and the watchdog chip starts to work. The WDI pin of the watchdog chip is connected with an MCUIO port (universal input and output interface), the RESET is connected with an MCU RESET pin (RESET pin), the MCU feeds a pulse signal to the WDI at regular time, the watchdog chip acquires the feeding signal, the pulse signal is not output to the RESET pin, and the MCU is not RESET. If the MCU fails to perform the dog feeding operation, the watchdog chip outputs a pulse signal to reset the MCU to remove the fault.
Further, as shown in fig. 5, the first power management circuit 8 and the second power management circuit 18 each include a 3.3V low dropout linear regulator, and the first power management circuit 8 further includes a 2.5V reference voltage regulator circuit. The first power management circuit 83.3V low dropout linear regulator stabilizes the battery voltage by 3.3V for the lithium battery 9 voltage measuring circuit, the watchdog circuit, the temperature measuring circuit, the RF wireless transmission module and the low power consumption MCU. The 2.5V reference voltage stabilizing circuit is used as a voltage dividing power supply for the temperature measuring circuit and the battery voltage measuring circuit. And inputting the reference voltage into the MCU reference voltage input port. Providing an accurate ADC reference voltage. The second power management circuit 183.3V low dropout regulator converts the voltage provided by the USB interface 14 into a stable 3.3V voltage, and supplies the stable voltage to the USB-to-serial port 15 circuit, the watchdog circuit, the RF wireless transmission circuit and the MCU for use.
The embodiment also discloses a using method of the wireless temperature measuring system, which comprises the following steps of an air matching mode:
from the temperature sensing unit 2, the first MCU5 operates the first watchdog circuit 11 to perform watchdog feeding;
the temperature detection circuit 3 stores the temperature value of the object to be measured 1 acquired by the temperature sensor 21 in the first MCU5, and the lithium battery 9 voltage measurement circuit measures the voltage of the lithium battery 9 and stores the voltage in the first MCU 5;
the first RF wireless transmission module 6 is set to be in a receiving mode, receives an information reading instruction sent by the main temperature collecting unit 13 in the receiving mode process, sends the voltage of the lithium battery 9 and the temperature value of the object to be measured 1 to the main temperature collecting unit 13 according to the information reading instruction, and enters a sleeping state after the sending is finished;
the main temperature collecting unit 13 stores the temperature value of the measured object and the voltage of the lithium battery 9 in a second MCU17Modbus table so that the host 12 can read the temperature value and the voltage of the lithium battery by using a Modbus protocol through the USB interface 14.
The method also comprises an active reporting mode, and comprises the following steps:
from the temperature sensing unit 2, the first MCU5 operates the first watchdog circuit 11 to perform watchdog feeding;
the temperature detection circuit 3 stores the temperature value of the measured object acquired by the temperature sensor 21 in the first MCU5, and the voltage measurement circuit of the lithium battery 9 measures the voltage of the lithium battery 9 and stores the voltage in the first MCU 5;
the first MCU5 sends the temperature value of the object to be measured and the voltage of the lithium battery 9 to the main temperature collecting unit 13 in a wireless transmission mode, and enters a low-power-consumption sleep state after the main temperature collecting unit 13 responds;
the main temperature collecting unit 13 stores the temperature value of the measured object and the voltage of the lithium battery 9 in a second MCU17Modbus table so that the host 12 can read the temperature value and the voltage of the lithium battery by using a Modbus protocol through the USB interface 14.
It should be noted that the slave temperature sensing unit 2 and the master temperature collecting unit 13 interact with each other by two working modes, namely active reporting and air matching, so that the use is flexible, the power consumption is reduced, and the product stability is improved.
Further, in the slave temperature sensing unit 2, the MCU with low power consumption is generally in a sleep mode with low power consumption, and enters an awake mode when the time of waking up is reached, and in the awake mode, the MCU with low power consumption operates the first watchdog circuit 11 to ensure normal operation of the slave temperature sensing unit 2. In the main temperature integrating unit 13, the second MCU17 operates the second watchdog circuit 16 at intervals, ensuring stable operation of the program.
Further, the host 12 can determine the use temperature of the device to be detected according to the obtained temperature value of the object to be detected, and can determine the current operation state of the device on site according to the current temperature, and if the device is possibly abnormal due to over-high temperature, the device can be maintained on site.
Further, the host 12 can determine the current power condition of the slave temperature sensing unit 2 according to the acquired power information of the lithium battery 9, and can perform maintenance on site according to the power condition of the slave temperature sensing unit 2, such as battery replacement or equipment replacement with low power.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A wireless thermometry system, comprising: the temperature collection device comprises a main temperature collection unit and a plurality of slave temperature sensing units, wherein the slave temperature sensing units are connected with a measured object and used for measuring the temperature of the measured object, the slave temperature sensing units are connected with the main temperature collection unit in a wireless mode so as to send the collected temperature of the measured object to the main temperature collection unit, and the main temperature collection unit is connected with a host so as to send collected temperature information to the host.
2. The wireless temperature measurement system of claim 1, wherein the slave temperature sensing unit comprises a temperature sensor, a temperature detection circuit, a first MCU, a first power management circuit, a lithium battery voltage measurement circuit, a first watchdog circuit, a first RF wireless transmission module and a first RF antenna;
the temperature sensor is installed on the measured object, the temperature sensor is connected with the first MCU through the temperature detection circuit, the first watchdog circuit is connected with the output end of the first MCU, the lithium battery is connected with the input end of the first MCU through the lithium battery voltage measurement circuit, the output end of the first MCU is connected with the main temperature collection unit through the first RF wireless transmission module and the first RF antenna
The lithium battery output end is connected with a first power management circuit, and the first power management circuit is respectively connected with the temperature detection circuit, the first watchdog circuit, the lithium battery voltage measurement circuit, the first MCU and the first RF wireless transmission module to supply power to the lithium battery.
3. The wireless thermometry system of claim 2, wherein the first MCU is a low power consumption MCU.
4. The wireless temperature measurement system of claim 2, wherein the temperature detection circuit comprises a first voltage division circuit, a voltage follower circuit and a mos transistor switch circuit, an output of the first voltage division circuit is connected with the voltage follower circuit, and the voltage follower circuit and the mos transistor switch circuit are both connected with the first MCU.
5. The wireless temperature measurement system of claim 2, wherein the lithium battery voltage measurement circuit adopts a second voltage division circuit, the second voltage division circuit comprises resistors R10, R11 and R12, the resistor R11 is connected with the resistor R10 through a plug connector, the resistor R12 is connected with the resistor R10 in series, two ends of the resistor R12 are connected with a capacitor C16 in parallel, and one end of the capacitor C16 is connected with an ADC pin of the first MCU.
6. The wireless temperature measurement system of claim 2, wherein the main temperature collection unit comprises a USB interface, a USB to serial port, a second MCU, a second watchdog circuit, a second power management circuit, a second RF wireless transmission module, and a second RF antenna;
the second RF wireless transmission module is connected with the first RF antenna through a second RF antenna, the output end of the second RF wireless transmission module is connected with a second MCU, the output of the second MCU is connected with the host through a USB-to-serial port and a USB interface, and the output of the second MCU is connected with a second watchdog circuit;
the USB interface is connected with the input end of the second power management circuit, and the output end of the second power management circuit is respectively connected with the second MCU, the second watchdog circuit, the second RF wireless transmission module and the USB-to-serial port to supply power to the second MCU, the second watchdog circuit, the second RF wireless transmission module and the USB-to-serial port.
7. The wireless thermometry system of claim 6, wherein the first watchdog circuit and the second watchdog circuit both employ watchdog chip circuits.
8. The wireless thermometry system of claim 6, wherein the first power management circuit comprises a 3.3V low dropout linear regulator and a 2.5V reference voltage regulator circuit, and the second power management circuit employs a 3.3V low dropout linear regulator.
9. A method of using a wireless thermometry system, comprising:
from the temperature sensing unit, the first MCU operates the first watchdog circuit to feed the watchdog;
the temperature detection circuit stores the temperature value of the measured object acquired by the temperature sensor in the first MCU, and the lithium battery voltage measurement circuit measures the voltage of the lithium battery and stores the voltage in the first MCU;
the first RF wireless transmission module is set to be in a receiving mode, receives an information reading instruction sent by the main temperature collection unit in the receiving mode process, sends the voltage of the lithium battery and the temperature value of the object to be measured to the main temperature collection unit according to the information reading instruction, and enters a sleeping state after the sending is finished;
and the main temperature collecting unit stores the temperature value of the measured object and the voltage of the lithium battery in a second MCU Modbus table so that the host computer can read the temperature value and the voltage of the lithium battery through a USB interface by using a Modbus protocol.
10. The method of using the wireless thermometry system of claim 9, further comprising:
from the temperature sensing unit, the first MCU operates the first watchdog circuit to feed the watchdog;
the temperature detection circuit stores the temperature value of the measured object acquired by the temperature sensor in the first MCU, and the lithium battery voltage measurement circuit measures the voltage of the lithium battery and stores the voltage in the first MCU;
the first MCU sends the temperature value of the object to be measured and the voltage of the lithium battery to the main temperature collecting unit in a wireless transmission mode, and enters a low-power-consumption sleep state after waiting for the response of the main temperature collecting unit;
and the main temperature collecting unit stores the temperature value of the measured object and the voltage of the lithium battery in a second MCU Modbus table so that the host computer can read the temperature value and the voltage of the lithium battery through a USB interface by using a Modbus protocol.
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| CN202010478783.XA CN111664958A (en) | 2020-05-29 | 2020-05-29 | Wireless temperature measurement system and temperature measurement method thereof |
| PCT/CN2021/089689 WO2021238543A1 (en) | 2020-05-29 | 2021-04-25 | Wireless temperature measurement system and temperature measurement method therefor |
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| WO2021238543A1 (en) * | 2020-05-29 | 2021-12-02 | 科大智能科技股份有限公司 | Wireless temperature measurement system and temperature measurement method therefor |
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| CN117596265B (en) * | 2023-11-21 | 2024-06-21 | 珠海高新区铭越科技有限公司 | Temperature measurement terminal data monitoring system and method based on wireless communication technology |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1249811A (en) * | 1997-03-07 | 2000-04-05 | 艾利森公司 | Voltage divider providing switchable resolution |
| CN2773817Y (en) * | 2004-11-10 | 2006-04-19 | 北京天力展业科技发展有限公司 | Power line contact temperature monitor system |
| KR200416174Y1 (en) * | 2006-02-28 | 2006-05-11 | 염상필 | A wireless temperature measurement device used for the treatment of sick house syndrome problem |
| CN1920893A (en) * | 2005-09-23 | 2007-02-28 | 北京经纬信息技术公司 | low-power consumption earth temperature automatic detection device and method thereof |
| KR20090038527A (en) * | 2007-10-16 | 2009-04-21 | (주)그린텍시스템 | Apparatus for monitering bus bar temperature |
| CN103743493A (en) * | 2013-12-26 | 2014-04-23 | 广西科技大学 | MSP430-based low-power dissipation wireless temperature monitoring system and process |
| CN105371977A (en) * | 2015-12-01 | 2016-03-02 | 广东美的厨房电器制造有限公司 | Temperature detection device and barbecue device comprising the same |
| CN206601203U (en) * | 2016-02-18 | 2017-10-31 | 株式会社村田制作所 | Temperature sensing circuit |
| CN107655588A (en) * | 2016-07-25 | 2018-02-02 | 宝沃汽车（中国）有限公司 | A kind of temperature multrirange device for accurately measuring and method |
| CN108627262A (en) * | 2017-03-20 | 2018-10-09 | 吴金贵 | transient temperature measuring system |
| CN208187574U (en) * | 2018-05-04 | 2018-12-04 | 福建澳泰自动化设备有限公司 | A kind of wireless temperature measurement system |
| CN208568103U (en) * | 2018-07-25 | 2019-03-01 | 深圳和而泰小家电智能科技有限公司 | Temperature sensing circuit, temperature-detecting device and electronic equipment |
| CN110307913A (en) * | 2019-06-29 | 2019-10-08 | 南京亚克电子有限公司 | A kind of polar region multiple spot cryogenic temperature sensing device and temp measuring method |
| CN110567599A (en) * | 2018-06-06 | 2019-12-13 | 中国石油化工股份有限公司 | wireless temperature measuring device of switch cabinet based on 2.4G communication frequency |
| CN209878176U (en) * | 2019-07-02 | 2019-12-31 | 南京信息工程大学 | Low-power consumption temperature measuring probe |
| CN209979727U (en) * | 2019-05-17 | 2020-01-21 | 西安亚川电力科技有限公司 | Electric comprehensive monitoring module |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101685036A (en) * | 2008-09-27 | 2010-03-31 | 襄樊海特电子有限公司 | Real-time measurement device of temperatures of high-voltage electrified bodies |
| CN102661803A (en) * | 2012-04-19 | 2012-09-12 | 北京昆仑海岸传感技术有限公司 | Low power consumption wireless active temperature label |
| US9971609B2 (en) * | 2014-06-05 | 2018-05-15 | American Megatrends, Inc. | Thermal watchdog process in host computer management and monitoring |
| US10746682B2 (en) * | 2014-10-08 | 2020-08-18 | Rfmicron, Inc. | Wireless sensor with multiple sensing options |
| CN209559802U (en) * | 2018-12-28 | 2019-10-29 | 南京信息工程大学 | A kind of portable salinometer based on STM8L052 single-chip microcontroller |
| CN111664958A (en) * | 2020-05-29 | 2020-09-15 | 科大智能电气技术有限公司 | Wireless temperature measurement system and temperature measurement method thereof |
-
2020
- 2020-05-29 CN CN202010478783.XA patent/CN111664958A/en active Pending
-
2021
- 2021-04-25 WO PCT/CN2021/089689 patent/WO2021238543A1/en active Application Filing
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1249811A (en) * | 1997-03-07 | 2000-04-05 | 艾利森公司 | Voltage divider providing switchable resolution |
| CN2773817Y (en) * | 2004-11-10 | 2006-04-19 | 北京天力展业科技发展有限公司 | Power line contact temperature monitor system |
| CN1920893A (en) * | 2005-09-23 | 2007-02-28 | 北京经纬信息技术公司 | low-power consumption earth temperature automatic detection device and method thereof |
| KR200416174Y1 (en) * | 2006-02-28 | 2006-05-11 | 염상필 | A wireless temperature measurement device used for the treatment of sick house syndrome problem |
| KR20090038527A (en) * | 2007-10-16 | 2009-04-21 | (주)그린텍시스템 | Apparatus for monitering bus bar temperature |
| CN103743493A (en) * | 2013-12-26 | 2014-04-23 | 广西科技大学 | MSP430-based low-power dissipation wireless temperature monitoring system and process |
| CN105371977A (en) * | 2015-12-01 | 2016-03-02 | 广东美的厨房电器制造有限公司 | Temperature detection device and barbecue device comprising the same |
| CN206601203U (en) * | 2016-02-18 | 2017-10-31 | 株式会社村田制作所 | Temperature sensing circuit |
| CN107655588A (en) * | 2016-07-25 | 2018-02-02 | 宝沃汽车（中国）有限公司 | A kind of temperature multrirange device for accurately measuring and method |
| CN108627262A (en) * | 2017-03-20 | 2018-10-09 | 吴金贵 | transient temperature measuring system |
| CN208187574U (en) * | 2018-05-04 | 2018-12-04 | 福建澳泰自动化设备有限公司 | A kind of wireless temperature measurement system |
| CN110567599A (en) * | 2018-06-06 | 2019-12-13 | 中国石油化工股份有限公司 | wireless temperature measuring device of switch cabinet based on 2.4G communication frequency |
| CN208568103U (en) * | 2018-07-25 | 2019-03-01 | 深圳和而泰小家电智能科技有限公司 | Temperature sensing circuit, temperature-detecting device and electronic equipment |
| CN209979727U (en) * | 2019-05-17 | 2020-01-21 | 西安亚川电力科技有限公司 | Electric comprehensive monitoring module |
| CN110307913A (en) * | 2019-06-29 | 2019-10-08 | 南京亚克电子有限公司 | A kind of polar region multiple spot cryogenic temperature sensing device and temp measuring method |
| CN209878176U (en) * | 2019-07-02 | 2019-12-31 | 南京信息工程大学 | Low-power consumption temperature measuring probe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021238543A1 (en) * | 2020-05-29 | 2021-12-02 | 科大智能科技股份有限公司 | Wireless temperature measurement system and temperature measurement method therefor |
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