CN213518649U - STM 32-based secondary water supply pump room data acquisition circuit - Google Patents
STM 32-based secondary water supply pump room data acquisition circuit Download PDFInfo
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- CN213518649U CN213518649U CN202022705709.5U CN202022705709U CN213518649U CN 213518649 U CN213518649 U CN 213518649U CN 202022705709 U CN202022705709 U CN 202022705709U CN 213518649 U CN213518649 U CN 213518649U
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- 229910052801 chlorine Inorganic materials 0.000 claims description 5
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Abstract
The utility model discloses a secondary water supply pump room data acquisition circuit based on STM32 relates to secondary water supply technical field, change RS485 circuit, wireless teletransmission module and switching power supply including secondary water supply pump room, signal amplification circuit, data processing unit, power conversion circuit, serial ports. The secondary water supply pump room is connected with the signal amplification circuit through a terminal, the data processing unit adopts an STM32 embedded single chip microcomputer as a main controller, pins P1-P7 of the data processing unit are connected with the signal amplification circuit, a Text-RX pin of the data processing unit is connected with an RS485-RX pin of the serial port-to-RS 485 circuit, and the Text-TX pin is connected with the RS485-TX pin. The switch power supply is connected with the wireless remote transmission module, and the signal amplification circuit and the data processing unit are connected with the power supply conversion circuit. The utility model discloses can carry out data processing with the signal in secondary water supply pump room, rethread teletransmission module direct transmission to the remote server to save the IO mouth of PLC controller, reduce and reform transform the cost, improve economical and practical.
Description
Technical Field
The utility model relates to a secondary water supply technical field especially relates to a secondary water supply pump house data acquisition circuit based on STM 32.
Background
The urban secondary water supply system is one of the most important infrastructures in modern cities and is an important mark of urban civilization, economic development and modernization level. His main functions are: timely and reliable water meeting the sanitary quality requirement is provided for a user; providing a sufficient amount of water and water pressure for the user. The reliability of the urban secondary water supply system influences the daily life and industrial production of people, and any water cut-off accident will cause certain economic loss and social influence.
Along with the acceleration of the modernized construction pace of cities, high-rise buildings are more and more, the demand of the cities on water quantity is continuously increased, and the requirement on water supply capacity is higher and higher. And aiming at the regional partial pressure water supply of the city, more secondary water supply facilities are provided. The secondary water supply is not high in professional level of a management unit, low in efficiency and high in management cost, and most of secondary water supply equipment is unattended, so that drinking water safety of residents is directly influenced.
Along with the development of science and technology, the pump house needs to be continuously improved, and the current secondary water supply pump house mainly adopts the PLC control cabinet to carry out data acquisition and monitoring on various parameters in the pump house. The collected data must be collected and processed by the PLC, and then the data is transmitted to a remote server by the communication between the special equipment and the PLC. And the IO mouth quantity of PLC controller is limited, increases the sensor and need change the inside operation procedure of PLC, leads to secondary working shaft room monitored control system's transformation cost too high, and economic practicality is lower.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a secondary working shaft room data acquisition circuit based on STM32 can save the IO mouth of PLC controller, reduces the transformation cost, improves economic practicality.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a STM 32-based data acquisition circuit for a secondary water supply pump room comprises a secondary water supply pump room, a signal amplification circuit, a data processing unit, a power conversion circuit, a serial port-to-RS 485 circuit, a wireless remote transmission module and a switching power supply; the secondary water supply pump room is connected with the signal amplification circuit through a terminal, the data processing unit adopts an STM32 embedded single chip microcomputer as a main controller, pins P1-P7 of the data processing unit are connected with the signal amplification circuit, a Text-RX pin of the data processing unit is connected with an RS485-RX pin of the serial port-to-RS 485 circuit, and a Text-TX pin of the data processing unit is connected with an RS485-TX pin of the serial port-to-RS 485 circuit; the switch power supply is connected with the wireless remote transmission module, and the signal amplification circuit and the data processing unit are connected with the power supply conversion circuit.
Further setting the following steps: the signal amplification circuit comprises an amplifier chip with the model of LM358, one end of a resistor R12 in the signal amplification circuit is connected with the non-inverting input end of the amplifier LM358, and the other end of the resistor R12 is grounded; one end of the resistor R15 is connected with the inverting input end of the amplifier LM358, and the other end of the resistor R15 is connected with the output end of the amplifier LM 358; resistor R17 has one end connected to the input of amplifier LM358 and the other end connected to ground.
Further setting the following steps: the other non-inverting input end of the amplifier LM358 is connected with a capacitor C22, and the other end of the capacitor C22 is grounded; the other inverting input end of the amplifier LM358 is connected with a resistor R18 and a resistor R16, the other end of the resistor R18 is grounded, and the other end of the resistor R16 is connected with the other output end of the amplifier LM 385.
Further setting the following steps: the +12V to +5V power conversion circuit is respectively connected with the +12V power supply and the signal amplification circuit, and the +12V power supply is converted into +5V voltage to supply power to the signal amplification circuit; the +5V to +3.3V power conversion circuit is respectively connected with the +5V power supply and the data processing unit, and converts the +12V power supply into +5V voltage and then supplies power to the data processing unit.
Further setting the following steps: the +12V to +5V power conversion circuit comprises a TPS54334 power conversion chip, and the +5V to +3.3V power conversion circuit comprises a TLV1117-3.3 power conversion chip.
Further setting the following steps: the STM32 embedded single-chip microcomputer adopts STM32F103VET6 model, and the STM32 embedded single-chip microcomputer is connected with a crystal oscillator circuit and a reset circuit that use two crystal oscillators of Y2 and Y3 as the main.
Further setting the following steps: and a residual chlorine detector, a turbidity detector, a PH value detector, a liquid level meter, a flow meter, a pressure gauge, a temperature and humidity detector and a fire smoke detector are arranged in the secondary water supply pump room.
Further setting the following steps: the switching power supply is a 24V switching direct-current power supply.
To sum up, the utility model discloses a beneficial technological effect does:
(1) can be with the data signal of each detector and the sensor in secondary water supply pump room, after data processing, the remote transmission module of rethread directly transmits the remote server to save the IO mouth of PLC controller, can self-defined kind that increases the sensor, and need not change PLC's internal program, reduce and reform transform the cost, improve economical and practical.
(2) The amplification factor is adjusted through the ratio of (R15+ R17)/R12, and the accuracy and the stability of the acquired signals are improved.
(3) The resistor R16, the resistor R18 and the capacitor C22 form a voltage stabilizing filter circuit, so that the stability of signals in the signal amplifying circuit is ensured, and the signals output by the output end are more stable.
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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic circuit diagram of the signal amplifying circuit of the present invention;
FIG. 3 is a schematic circuit diagram of a data processing unit according to the present invention;
FIG. 4 is a schematic circuit diagram of the RS485 circuit of the present invention;
fig. 5 is a schematic circuit diagram of the power conversion circuit of the present invention.
Reference numerals:
1. a secondary water supply pump house; 2. A signal amplification circuit; 3. A data processing unit;
4. a power conversion circuit; 5. A serial port-to-RS 485 circuit; 6. A wireless remote transmission module;
7. a switching power supply; 8. A residual chlorine detector; 9. A turbidity detector;
10. a PH value detector; 11. A liquid level meter; 12. A flow meter;
13. a pressure gauge; 14. A temperature and humidity detector;
15. fire smoke detector.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1, for the utility model discloses a secondary water supply pump house data acquisition circuit based on STM32, including secondary water supply pump house 1, signal amplification circuit 2, data processing unit 3, power conversion circuit 4, serial ports commentaries on classics RS485 circuit 5, wireless teletransmission module 6 and switching power supply 7. The secondary water supply pump room 1 is provided with a residual chlorine detector 8, a turbidity detector 9, a PH value detector 10, a liquid level meter 11, a flow meter 12, a pressure gauge 13, a temperature and humidity detector 14 and a fire smoke detection instrument 15, and instruments arranged in the secondary water supply pump room 1 are all connected with the signal amplification circuit 2 through terminals. Water quality parameters are collected through a residual chlorine detector 8, a turbidity detector 9 and a PH value detector 10, water supply parameters are collected through a liquid level meter 11, a flow meter 12 and a pressure meter 13, and pump room environment parameters are collected through a temperature and humidity monitoring instrument and a fire smoke detector 15. The parameters are respectively transmitted into the signal amplifying circuit 2 according to different output signal types to carry out primary processing of signals. The switch power supply 7 is a 24V switch direct current power supply, and the switch power supply 7 is electrically connected with the wireless remote transmission module 6 and used for supplying power to the system.
Referring to fig. 2, the signal amplification circuit 2 includes an amplifier chip of type LM358, one end of a resistor R12 in the signal amplification circuit 2 is connected to the non-inverting input terminal of the amplifier LM358, and the other end is grounded; one end of the resistor R15 is connected with the inverting input end of the amplifier LM358, and the other end of the resistor R15 is connected with the output end of the amplifier LM 358; one end of the resistor R17 is connected to the input terminal of the amplifier LM358, and the other end is grounded, so that the amplification is adjusted by the ratio of (R15+ R17)/R12. The other non-inverting input end of the LM358 is connected with a capacitor C22, and the other end of the capacitor C22 is grounded; the other inverting input end of LM358 is connected with resistance R18 and resistance R16, and the other end ground connection of resistance R18, and the other end of resistance R16 links to each other with another output of LM385 to form steady voltage filter circuit, guarantee the stability of signal, let the signal of output more stable. After signal amplification and filtering, the acquired signals are input into an A/D acquisition port of the data processing unit 3 for data processing.
Referring to fig. 3, the data processing unit 3 adopts an STM32 embedded single chip microcomputer of which the model is STM32F103VET6 as a main controller, and the STM32 embedded single chip microcomputer is connected with a crystal oscillator circuit and a reset circuit which mainly comprise two crystal oscillators of Y2 and Y3, so as to provide stable and accurate single-frequency oscillation and ensure stable and reliable work of a system circuit. The pins P1-P7 of the data processing unit 3 are connected with the pin AOUT _ CH1 of the signal amplifying circuit 2, the data processing unit 3 receives the collected signals of the signal amplifying circuit 2 and then performs data processing, and the processed data signals are input into the serial port-to-RS 485 circuit 5 for data conversion.
Referring to fig. 4, the serial port-to-RS 485 circuit 5 includes a model 485 chip, a Text-RX pin of the data processing unit 3 is connected to an RS485-RX pin of the serial port-to-RS 485 circuit 5, and a Text-TX pin of the data processing unit 3 is connected to an RS485-TX pin of the serial port-to-RS 485 circuit 5. Meanwhile, the serial port-to-RS 485 circuit 5 is connected with the wireless remote transmission module 6, and the serial port-to-RS 485 circuit 5 performs format conversion on the data signal and then inputs the data signal into the wireless remote transmission module 6.
Referring to fig. 5, the power conversion circuit 4 includes a +12V to +5V power conversion circuit 4 and a +5V to +3.3V power conversion circuit 4, the +12V to +5V power conversion circuit 4 includes a TPS54334 power conversion chip, and the +5V to +3.3V power conversion circuit 4 includes a TLV1117-3.3 power conversion chip. The +12V to +5V power conversion circuit 4 is respectively connected with the +12V power supply and the signal amplification circuit 2, and converts the +12V power supply into +5V voltage and then supplies power to the signal amplification circuit 2. The 5V to +3.3V power conversion circuit 4 is respectively connected with a +5V power supply and the data processing unit 3, and converts the +12V power supply into +5V voltage and then supplies power to the data processing unit 3.
The utility model discloses a theory of operation and beneficial effect do:
the utility model discloses a gather the water quality parameter through chlorine residue detector 8, turbidity detector 9, pH value detector 10 in the circuit, utilize level gauge 11, flowmeter 12, manometer 13 to gather the water supply parameter, utilize temperature and humidity instrumentation and 15 collection pump house environmental parameters of conflagration smoke detector. The parameters are respectively transmitted into the signal amplifying circuit 2 according to different output signal types to carry out primary processing of signals. After signal amplification and filtering, the acquired signals are input into an A/D acquisition port of the data processing unit 3 for data processing. The data processing unit 3 inputs the processed data signals into the serial port-to-RS 485 circuit 5 for data conversion. The converted data can be transmitted to a remote server with a specific IP address through the wireless remote transmission module 6 and stored in a database, and technicians can call the data in the database at any time to monitor water supply data.
Compared with the prior art, the utility model discloses can be with the data signal of each detector and the sensor of secondary water supply pump room 1, after data processing, the rethread teletransmission module direct transmission is to the remote server to save the IO mouth of PLC controller, can self-defined kind that increases the sensor, and need not change PLC's internal program, reduce and reform transform the cost, improve economical and practical.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a secondary water supply pump house data acquisition circuit based on STM32 which characterized in that: the system comprises a secondary water supply pump room (1), a signal amplification circuit (2), a data processing unit (3), a power conversion circuit (4), a serial port-to-RS 485 circuit (5), a wireless remote transmission module (6) and a switching power supply (7); the secondary water supply pump room (1) is connected with the signal amplification circuit (2) through a terminal, the data processing unit (3) adopts an STM32 embedded single chip microcomputer as a main controller, pins P1-P7 of the data processing unit (3) are connected with the signal amplification circuit (2), a Text-RX pin of the data processing unit (3) is connected with an RS485-RX pin of the serial port-to-RS 485 circuit (5), and a Text-TX pin of the data processing unit (3) is connected with an RS485-TX pin of the serial port-to-RS 485 circuit (5); the switch power supply (7) is connected with the wireless remote transmission module (6), and the signal amplification circuit (2) and the data processing unit (3) are connected with the power conversion circuit (4).
2. The STM 32-based data acquisition circuit for secondary water supply pump rooms according to claim 1, wherein: the signal amplification circuit (2) comprises an amplifier chip with the model of LM358, one end of a resistor R12 in the signal amplification circuit (2) is connected with the non-inverting input end of the amplifier LM358, and the other end of the resistor R12 is grounded; one end of the resistor R15 is connected with the inverting input end of the amplifier LM358, and the other end of the resistor R15 is connected with the output end of the amplifier LM 358; resistor R17 has one end connected to the input of amplifier LM358 and the other end connected to ground.
3. The STM 32-based data acquisition circuit for secondary water supply pump rooms according to claim 2, wherein: the other non-inverting input end of the amplifier LM358 is connected with a capacitor C22, and the other end of the capacitor C22 is grounded; the other inverting input end of the amplifier LM358 is connected with a resistor R18 and a resistor R16, the other end of the resistor R18 is grounded, and the other end of the resistor R16 is connected with the other output end of the amplifier LM 385.
4. The STM 32-based data acquisition circuit for secondary water supply pump rooms according to claim 1, wherein: the power supply conversion circuit (4) comprises a +12V to +5V power supply conversion circuit (4) and a +5V to +3.3V power supply conversion circuit (4), the +12V to +5V power supply conversion circuit (4) is respectively connected with a +12V power supply and the signal amplification circuit (2), and the +12V power supply is converted into +5V voltage and then supplies power to the signal amplification circuit (2); the +5V to +3.3V power conversion circuit (4) is respectively connected with the +5V power supply and the data processing unit (3), and converts the +12V power supply into +5V voltage and then supplies power to the data processing unit (3).
5. The STM 32-based secondary water supply pump house data acquisition circuit of claim 4, wherein: the +12V to +5V power conversion circuit (4) comprises a TPS54334 power conversion chip, and the +5V to +3.3V power conversion circuit (4) comprises a TLV1117-3.3 power conversion chip.
6. The STM 32-based data acquisition circuit for secondary water supply pump rooms according to claim 1, wherein: the STM32 embedded single-chip microcomputer adopts STM32F103VET6 model, and the STM32 embedded single-chip microcomputer is connected with a crystal oscillator circuit and a reset circuit that use two crystal oscillators of Y2 and Y3 as the main.
7. The STM 32-based data acquisition circuit for secondary water supply pump rooms according to claim 1, wherein: and a residual chlorine detector (8), a turbidity detector (9), a pH value detector (10), a liquid level meter (11), a flow meter (12), a pressure gauge (13), a temperature and humidity detector (14) and a fire smoke detection instrument (15) are arranged in the secondary water supply pump room (1).
8. The STM 32-based data acquisition circuit for secondary water supply pump rooms according to claim 1, wherein: the switching power supply (7) is a 24V switching direct-current power supply.
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| CN202022705709.5U CN213518649U (en) | 2020-11-20 | 2020-11-20 | STM 32-based secondary water supply pump room data acquisition circuit |
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| CN202022705709.5U CN213518649U (en) | 2020-11-20 | 2020-11-20 | STM 32-based secondary water supply pump room data acquisition circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112330947A (en) * | 2020-11-20 | 2021-02-05 | 浙江大学 | Secondary water supply pump house data acquisition circuit based on STM32 singlechip |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112330947A (en) * | 2020-11-20 | 2021-02-05 | 浙江大学 | Secondary water supply pump house data acquisition circuit based on STM32 singlechip |
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