CN209894358U - Temperature detection device of solar water heating system - Google Patents
Temperature detection device of solar water heating system Download PDFInfo
- Publication number
- CN209894358U CN209894358U CN201920333107.6U CN201920333107U CN209894358U CN 209894358 U CN209894358 U CN 209894358U CN 201920333107 U CN201920333107 U CN 201920333107U CN 209894358 U CN209894358 U CN 209894358U
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- heating system
- water heating
- solar water
- temperature
- temperature sensor
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 title abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000009529 body temperature measurement Methods 0.000 abstract description 5
- 238000005070 sampling Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model relates to a temperature detection device of a solar water heating system, which comprises a temperature sensor, a blind pipe and a control circuit board; the blind pipe is arranged in the solar water heating system; the temperature sensor is arranged in the blind pipe; the control circuit board comprises a singlechip and a singlechip peripheral data acquisition port circuit; the temperature sensor is electrically connected with the peripheral data acquisition port circuit of the single chip microcomputer; the single chip microcomputer is also in communication connection with an external upper computer. The utility model discloses dispose the relevant temperature threshold value of solar water heating system operation through the host computer according to engineering actual conditions and user's demand, relevant configuration data are issued to control circuit board through the ethernet, can look over the real-time temperature value of each temperature measuring point of solar water heating system through the host computer; the resources occupied by the single chip microcomputer are less during multipoint temperature measurement, and the temperature sensor is fixed in the blind pipe, so that system debugging and maintenance are facilitated.
Description
Technical Field
The utility model relates to a solar water heating system field, especially a solar water heating system's temperature-detecting device.
Background
At present, various temperature detection devices are widely applied to a solar water heating system so as to improve the digitization and the informatization of system operation and reduce the manpower and material resource investment of system management and maintenance. However, the existing temperature detection device has the problems of inconvenient installation, more resources occupied by a microprocessor, poor stability and the like. The existing temperature detection device has the following characteristics: 1. the temperature measurement range is narrow, the temperature measurement precision is not high, and more resources of a microprocessor are occupied during multipoint temperature measurement. 2. The engineering maintenance difficulty is high, and the popularization is inconvenient.
Disclosure of Invention
In view of this, the utility model aims at providing a temperature-detecting device of solar water heating system fixes temperature sensor in the blind pipe, is convenient for system's debugging and maintenance.
The utility model discloses a following scheme realizes: a temperature detection device of a solar water heating system is provided, which comprises a temperature sensor, a blind pipe and a control circuit board; the blind pipe is arranged in the solar water heating system; the temperature sensor is arranged in the blind pipe; the control circuit board comprises a singlechip and a singlechip peripheral data acquisition port circuit; the temperature sensor is electrically connected with the peripheral data acquisition port circuit of the single chip microcomputer; the control circuit board is also in communication connection with an external upper computer.
Further, the single chip microcomputer is of a type including but not limited to STM 32.
Further, the temperature sensor is a thermistor temperature sensor.
Further, the single chip microcomputer is communicated with the external upper computer through the Ethernet.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses it is less that the resource that occupies the singlechip during multiple spot temperature measurement, and temperature sensor fixes in the blind pipe, the system debugging and the maintenance of being convenient for.
Drawings
Fig. 1 is a block diagram of the embodiment of the present invention.
Fig. 2 is the circuit diagram of the peripheral data acquisition port of the single chip microcomputer.
Fig. 3 is a flowchart of a temperature detection method of the temperature detection device of the solar water heating system according to the embodiment of the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
As shown in fig. 1, the present embodiment provides a temperature detection device for a solar water heating system, which provides a solar water heating system, including a temperature sensor, a blind pipe and a control circuit board; the blind pipe is arranged in the solar water heating system; the temperature sensor is arranged in the blind pipe; the control circuit board comprises a singlechip and a singlechip peripheral data acquisition port circuit; the temperature sensor is electrically connected with the peripheral data acquisition port circuit of the single chip microcomputer; the control circuit board is also in communication connection with an external upper computer.
In this embodiment, the single chip microcomputer is of a type including, but not limited to, STM 32.
In the present embodiment, the temperature sensor is a thermistor temperature sensor.
In this embodiment, the single chip microcomputer communicates with the external upper computer through an ethernet.
Specifically, as shown in fig. 2, in this embodiment, the data acquisition port circuit of the control circuit board includes an 8-to-1 analog selector U1, an operational amplifier U2, a connector J1, a resistor RP1, a resistor R1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a diode D1, a 7-way thermistor temperature sensor is connected to the connector J1, and then connected to the pin U1 of the 8-to-1 analog selector through the resistor RP1, the first capacitor C1 is connected across between the pins 7 and 16 of the 8-to-1 analog selector U1, the pin 16 of the 8-to-1 analog selector U1 is connected to a 5V power supply, the pin 6, the pin 7, and the pin 8 of the 8-to-1 analog selector U1 are grounded, the pins 9, 10, and 11 of the 8-to the pin of the 8-to-1 analog selector U1, the pin 3 of the 8-to-from-1 analog selector U1 is connected to the non-phase input terminal of the operational amplifier U2, the, The third capacitor C3 is grounded, and is connected with a 3.3V power supply through a resistor R1 and a diode D400, and the output end of the operational amplifier U2 is connected with a pin of the microprocessor through a resistor R1.
Preferably, in this embodiment, a blind pipe is pre-installed at a temperature measuring point in the solar water heating system, the temperature sensor is fixed in the blind pipe, an output signal of the temperature sensor is connected with a data acquisition port of the control circuit board through a shielding wire, and the control circuit board and the upper computer are in ethernet communication. The temperature threshold values relevant to the operation of the solar water heating system are configured through the upper computer according to the actual engineering conditions and the user requirements, relevant configuration data are issued to the control circuit board through the Ethernet, and the real-time temperature values of all temperature measuring points of the solar water heating system can be checked through the upper computer.
The thermistor is connected with the sampling resistor in series, and the voltage divided by the sampling resistor is read, then converted into the resistance value of the thermistor, and then converted into the corresponding temperature value according to a formula. The U1 is an analog selector from 1 to 8, because the AD resources of the microprocessor are limited, and an AD port cannot be provided for each temperature acquisition, and in order to save the AD resources, the AD port is shared by the temperature acquisition through the analog selector from 1 to 8. The A, B, C pin of the U1 is controlled by the IO port of the microprocessor, so that the temperature is acquired in turn. A follower circuit formed by the operational amplifier of the U2 plays a role in isolation, an RC circuit formed by the R1 and the C3 plays a role in sampling, holding and filtering, and the diode D1 plays a role in clamping voltage to protect an internal circuit of the microprocessor.
Preferably, in this embodiment, the temperature sensor is a negative temperature coefficient thermistor, and measures the multipoint temperature of the solar water heating system. The upper computer is remotely configured with the relevant temperature threshold value of the solar water heating system, so that the management and the maintenance are convenient, and different use requirements of users are met.
Preferably, as shown in fig. 3, the embodiment further provides a temperature detection method of a temperature detection device of a solar water heating system, including the following steps:
step 1: the temperature sensor is arranged in the blind pipe and is connected with the data acquisition port of the control circuit board through a shielding lead; and starting the device, and initializing the MCU peripheral resources of the control circuit board.
Step 2: and (3) periodically acquiring whether the time for acquiring the temperature data is up, and if so, executing the step 3.
And step 3: and acquiring the detection voltage of the sampling resistor, carrying out voltage following and amplitude limitation, and then transmitting the detection voltage to an AD sampling port of the microprocessor.
And 4, step 4: AD data were collected 10 times, the maximum and minimum values were removed and the average of the remaining 8 data was taken as the final measurement.
And 5: and converting the acquired AD data into voltages at two ends of the temperature of the sampling resistor, and calculating the voltages at the two ends of the temperature sensor according to the circuit structure.
Step 6: converting the voltage value into a temperature value according to the conversion relation between the voltage at two ends of the temperature sensor and the temperature, introducing a compensation coefficient for temperature compensation, carrying out multiple tests on the compensation coefficient through a constant temperature oil groove temperature field and a thermometer with the precision of 0.1 ℃, and storing the compensation coefficient into an internal memory of the microprocessor.
And 7: the A, B, C pin of the 1-out-of-8 analog selector U1 is controlled by the IO port of the microprocessor, so that multipoint temperature collection in turn is realized.
And 8: and (6) ending.
It is worth mentioning that the utility model protects a hardware structure, as for the control method does not require protection. The above is only a preferred embodiment of the present invention. However, the present invention is not limited to the above embodiments, and any equivalent changes and modifications made according to the present invention do not exceed the scope of the present invention, and all belong to the protection scope of the present invention.
Claims (4)
1. The utility model provides a temperature-detecting device of solar water heating system, provides a solar water heating system which characterized in that: the device comprises a temperature sensor, a blind pipe and a control circuit board; the blind pipe is arranged in the solar water heating system; the temperature sensor is arranged in the blind pipe; the control circuit board comprises a singlechip and a singlechip peripheral data acquisition port circuit; the temperature sensor is electrically connected with the peripheral data acquisition port circuit of the single chip microcomputer; the single chip microcomputer is also in communication connection with an external upper computer.
2. The temperature detecting device of a solar water heating system according to claim 1, wherein:
the single chip microcomputer is of a model including but not limited to STM 32.
3. The temperature detecting device of a solar water heating system according to claim 1, wherein:
the temperature sensor adopts a thermistor temperature sensor.
4. The temperature detecting device of a solar water heating system according to claim 1, wherein: the single chip microcomputer is communicated with the external upper computer through the Ethernet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920333107.6U CN209894358U (en) | 2019-03-16 | 2019-03-16 | Temperature detection device of solar water heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920333107.6U CN209894358U (en) | 2019-03-16 | 2019-03-16 | Temperature detection device of solar water heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209894358U true CN209894358U (en) | 2020-01-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920333107.6U Expired - Fee Related CN209894358U (en) | 2019-03-16 | 2019-03-16 | Temperature detection device of solar water heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209894358U (en) |
-
2019
- 2019-03-16 CN CN201920333107.6U patent/CN209894358U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |