CN212409807U - Multifunctional water meter data acquisition module - Google Patents
Multifunctional water meter data acquisition module Download PDFInfo
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- CN212409807U CN212409807U CN202021075751.7U CN202021075751U CN212409807U CN 212409807 U CN212409807 U CN 212409807U CN 202021075751 U CN202021075751 U CN 202021075751U CN 212409807 U CN212409807 U CN 212409807U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 71
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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Abstract
A multifunctional water meter data acquisition module comprises a PCB circuit board, wherein the PCB circuit board is provided with a power management module, a microcontroller, a voltage measurement module, a temperature measurement module, a communication module, a manual wake-up module, an LED indication module, a data memory and a water meter access interface; the power management module is connected with each component and used for providing voltage required by work; the communication module is an NB-IoT wireless communication module, is connected with the microcontroller and is used for uploading data and sending configuration commands through a network; the voltage measuring module is connected with the microcontroller and used for detecting the voltage of the power supply; the temperature measuring module is connected with the microcontroller and used for detecting the working temperature of the PCB; the water meter access interface comprises a pulse water meter access interface and an RS485 direct-reading water meter access interface, can be connected with different water meters, has the effects of stable data transmission and convenient replacement and maintenance, and is suitable for popularization and use.
Description
Technical Field
The utility model belongs to the technical field of the teletransmission water gauge, especially, relate to a multi-functional water gauge data acquisition module.
Background
Most of water meters in the market at present adopt an M-Bus or RS485 Bus communication mode to acquire water consumption of a base meter and transmit acquired data to an application server in a GPRS transmission mode, but because the water meters are usually placed in a dark, humid or even ponding severe environment, installation wiring and after-sale processing are troublesome, GPRS wireless signals are poor, power consumption is high, and an external power supply is inconvenient, so that the traditional remote meter reading mode cannot meet the market demand; in addition, the existing data acquisition module can only support the water meter connected with a specific type, and the later-stage replacement and maintenance are inconvenient.
SUMMERY OF THE UTILITY MODEL
For solving the defect that exists in the background, the utility model provides a multi-functional water gauge data acquisition module can support to insert polytype water gauge to it is stable to have data transmission, changes and maintains convenient effect.
In order to achieve the above object, the technical solution of the present invention is as follows: a multifunctional water meter data acquisition module comprises a PCB circuit board, wherein the PCB circuit board is provided with a power management module, a microcontroller, a voltage measurement module, a temperature measurement module, a communication module, a manual wake-up module, an LED indication module, a data memory and a water meter access interface; the power management module is connected with each component and used for providing voltage required by work; the communication module is connected with the microcontroller and used for uploading data and sending a configuration command through a network; the voltage measuring module is connected with the microcontroller and used for detecting the voltage of the power supply; the temperature measuring module is connected with the microcontroller and used for detecting the working temperature of the PCB; the LED indicating module is connected with the microcontroller and is used for displaying the working state of the module; the manual wake-up module is connected with the microcontroller and is used for activating the reading and reporting functions after the module detects a signal; the data memory is connected with the microcontroller and used for storing the acquired data; the water meter access interface is connected with the microcontroller and used for externally connecting a water meter to be tested, and comprises a pulse water meter access interface and an RS485 direct-reading water meter access interface.
Preferably, the microcontroller is an STM8L series single chip microcomputer.
Preferably, the communication module is a remote BC95 model NB-IoT wireless communication module.
Preferably, the manual wake-up module is a magnetic sensor.
Preferably, the voltage measurement module adopts a partial pressure detection principle, and a detection circuit thereof includes a voltage input terminal, an MOS transistor, a triode, a voltage detection enable terminal, and a voltage detection terminal, wherein the MOS transistor is a P-channel field effect transistor, and the triode is an NPN-type triode, wherein: the source electrode of the MOS tube is connected with the voltage input end, the grid electrode of the MOS tube is connected with the collector electrode of the triode, the drain electrode of the MOS tube is grounded through two series-connected voltage-dividing resistors, a voltage detection end is connected between the two voltage-dividing resistors, the collector electrode of the triode is connected with the voltage detection end through a resistor, the emitting electrode of the triode is grounded, and the base electrode of the triode is connected with a voltage detection enabling end.
Preferably, the detection circuit of the temperature measurement module comprises a thermistor, a temperature detection enable terminal and a temperature detection terminal, wherein: one end of the thermistor is connected with the temperature detection end, the other end of the thermistor is grounded, the temperature detection end is connected with the temperature detection enabling end through a resistor, and the temperature detection enabling end is grounded through a capacitor.
Preferably, the thermistor is a NCP18XH103F03RB type thermistor.
Preferably, the data memory is a MB85RS256 type ferroelectric random access memory.
Has the advantages that:
1. the utility model discloses a be equipped with the water gauge and insert the interface, the water gauge inserts the interface and links to each other with microcontroller for the external water gauge that awaits measuring, the water gauge inserts the interface and includes that pulse water gauge inserts interface and RS485 direct-reading water gauge and inserts the interface, can insert the water gauge of different grade type, changes easy maintenance, and application scope is wide.
2. The utility model discloses a be equipped with voltage measurement module, temperature measurement module, voltage measurement module, temperature measurement module link to each other with microcontroller respectively to finally realize the data interaction through NB-IoT wireless communication module through network and backend server, the data transmission of be more stable, high-efficient.
Drawings
Fig. 1 is a control block diagram of the present invention;
FIG. 2 is a schematic circuit diagram of a power management module of the present invention;
fig. 3 is a schematic circuit diagram of the voltage measuring module of the present invention;
fig. 4 is a schematic circuit diagram of the temperature measurement module of the present invention;
fig. 5 is a schematic circuit diagram of the pulse water meter access interface of the present invention;
fig. 6 is a schematic diagram of an RS485 direct-reading water meter access interface circuit of the present invention;
wherein: BAT is the power, U1 is the microcontroller, U3 is the interface chip, U4 is the stabilivolt, U5 is the chip that steps up, U6 is the chip that steps down, VCC is the voltage input end, RT1 is the sensitive resistance, P1, P2 are the sockets.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; the connection can be mechanical connection or circuit connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The data acquisition module of the multifunctional water meter shown in fig. 1 comprises a PCB circuit board, wherein the PCB circuit board is provided with a power management module, a microcontroller U1, a voltage measurement module, a temperature measurement module, a communication module, a manual wake-up module, an LED indication module, a data memory and a water meter access interface; wherein, for the utility model discloses what the power supply BAT of power supply adopted is external 7.2V battery, and the battery is connected to power management module's input through the socket, and its output of power management module links to each other with each part and is used for providing the utility model discloses the required voltage of work, specifically speaking, as shown in fig. 2, the utility model discloses well power management module includes 3.3V supply circuit, 3.6V supply circuit and 12V supply circuit, and wherein 3.3V supply circuit mainly includes stabilivolt U4 and peripheral circuit, and what stabilivolt U4 specifically adopted is HT7533-1 type three-terminal stabilivolt, and stabilivolt U4's input is connected to power BAT, and stabilivolt U4's output is connected to microcontroller U1, voltage measurement module, temperature measurement module, manual awakening module, LED instruction module, data memory respectively, provides 3.3V operating voltage for it; the 3.6V power supply circuit mainly comprises a voltage reduction chip U6 and a peripheral circuit thereof, the voltage reduction chip U6 specifically adopts an MP1482 chip, a power supply enabling end 3V6_ EN thereof is connected with a microcontroller U1, the microcontroller U1 controls a power supply enabling end 3V6_ EN, when the power supply enabling end is at a high level, a triode Q13 is conducted, an MOS tube Q11 is further conducted, and the voltage is reduced to 3.6V output through the voltage reduction chip U6 and the peripheral circuit thereof to supply power to the communication module; the 12V power supply circuit mainly comprises a boost chip U5 and a peripheral circuit thereof, the boost chip U5 specifically adopts an XL6007 buck chip, a power supply enabling end HV _ EN of the boost chip U5 is connected with a microcontroller U1, the microcontroller U1 controls the power supply enabling end HV _ EN, when the power supply enabling end HV _ EN is at a high level, a triode Q9 is conducted, a MOS tube Q8 is further conducted, the voltage is boosted to 12V output through the boost chip U5 and the peripheral circuit thereof, and power is supplied to a water meter access interface; microcontroller U1 mainly is responsible for each part module of control and interface coordination work, the utility model discloses a microcontroller U1 be STM8L series's ultralow power consumption singlechip, specific model is STM8L151C8T6 type singlechip, it adopts the 8 kernels of structure of haveing, and operating frequency is the highest 16MHz that is, built-in 64K Flash, 2K RAM and 2K Byte EEPROM, abundant reinforcing IO port, operating voltage is 1.8V-3.6V, have characteristics such as small, the low power dissipation, fast, peripheral circuit is abundant, be the utility model discloses an it selects to select the ideal.
The communication module is connected with the microcontroller and used for uploading data and sending configuration commands to a background server through a network, in the embodiment, the communication module is a remote BC95 model NB-IoT wireless communication module, the module is a single-frequency-band NB-IoT wireless communication module with compact size, and the module is used for carrying out data transmission based on NB-IoT technology, so that the communication module has the characteristics of high gain and wide signal coverage, and is stable and reliable; the module is packaged by LCC which is easy to weld, the module can be rapidly produced by standard SMT equipment, and the module is particularly suitable for a modernized production mode with automation, large scale and low cost; in addition, the module has low power consumption, only consumes 2mA in the idle mode and 2uA in the sleep mode, and can effectively prolong the service life of the whole electronic module.
The voltage measurement module is connected with the microcontroller and used for detecting the voltage of power supply, as shown in fig. 3, the voltage measurement module adopts a partial pressure detection principle, the detection circuit comprises a voltage input end VCC, an MOS tube Q10, a triode Q12, a voltage detection enable end BAT _ DET _ EN and a voltage detection end BAT _ DET, the MOS tube Q10 is a P-channel field effect transistor, the triode Q12 is an NPN-type triode, wherein: the source of MOS pipe Q10 is connected with voltage input end VCC, the grid of MOS pipe Q10 is connected with the collector of triode Q12, the drain of MOS pipe Q10 is earthed through two series-connected divider resistors R26, R31, voltage detection end BAT _ DET is connected between two divider resistors R26, R31, the emitter of triode Q12 is earthed, its base is connected to voltage detection enable end BAT _ DET _ EN, the detection principle: voltage input VCC is connected to power BAT, microcontroller U1 control voltage detection enable terminal BAT _ DET _ EN, when it is located the high level, triode Q12 switches on, and then make MOS pipe Q3 switch on, voltage input VCC supplies power to resistance R26 and R31, microcontroller U1 carries out continuous ADC sampling to resistance R31 terminal voltage through voltage detection terminal BAT _ DET, electric capacity C27 makes the sampling value more stable, again according to the voltage value who calculates voltage input VCC.
The temperature measurement module is connected with the microcontroller and used for detecting the working temperature of the PCB circuit board, as shown in FIG. 4, the detection circuit of the temperature measurement module comprises a thermistor RT1, a temperature detection enabling end TEM _ EN and a temperature detection end TEM _ DET, wherein: one end of a thermistor RT1 is connected with a temperature detection end TEM _ DET, the other end of the thermistor RT1 is grounded, the temperature detection end RT1 is connected with a temperature detection enabling end TEM _ EN through a resistor R11, the temperature detection enabling end TEM _ EN is grounded through a capacitor C17, the type of the thermistor RT1 is NCP18XH103F03RB type thermistor in the embodiment, the thermistor RT1 is welded on a PCB circuit board at a position close to a microcontroller U1 so as to accurately acquire the temperature, and the detection principle is as follows: temperature detects enable end TEM _ EN, temperature detection end TEM _ DET links to each other with microcontroller U1 respectively, during the detection temperature, microcontroller U1 will detect enable end TEM _ EN and set to the high level, to thermistor RT1 power supply, microcontroller carries out the ADC sampling through temperature detection end TEM _ DET to thermistor RT1, looks up according to the temperature value that each sampling interval corresponds again, acquires the temperature, through this function, can acquire the utility model discloses a PCB circuit board and peripheral temperature in time feed back temperature information to the server of backstage through communication module, prevent high temperature low temperature, prevent that equipment from damaging.
The manual awakening module is connected with the microcontroller U1 and used for activating the meter reading and reporting functions after the module detects a signal, in the embodiment, the manual awakening module is a magnetic sensor, specifically an S5712ACDL1-M3T1U type magnetic sensor is selected, the S5712ACDL1-M3T1U type magnetic sensor is used as a Hall element and detects the change of a magnetic field by utilizing a Hall effect, the manual awakening module is welded on a PCB circuit board and connected with the microcontroller U1, when the manual awakening function is used, an operator holds a magnet to be close to the manual awakening module, the manual awakening module detects the change of the corresponding magnetic field and converts the change signal into an electric signal to be sent to the microcontroller U1, and after the microcontroller U1 receives the electric signal, the meter reading and reporting functions are activated, so that the power consumption is greatly reduced, and the practical service life of the battery is prolonged.
Data memory links to each other with microcontroller for the data of storage collection, in this embodiment data memory is MB85RS256 type ferroelectric random access memory, in the time of the use, the utility model discloses water gauge data storage to data memory with the collection to reading water gauge data from data memory when reporting, MB85RS256 type data memory is a ferroelectric random access memory, and this memory forms nonvolatile memory cell through ferroelectric technology and silicon gate CMOS technology, need not the reserve battery and can keep data, and the durability that its nonvolatile memory cell read/write further promotes, can store 32K byte data, and data retention is over 10 years.
In order to be conveniently connected with a water meter to be tested on site, the utility model is provided with a water meter access interface which is connected with a microcontroller and is used for externally connecting the water meter to be tested, the water meter access interface comprises a pulse water meter access interface and a RS485 direct-reading water meter access interface, thus the utility model can be connected with most existing water meters, and has wider application range, as shown in figure 5, the water meter access interface is a circuit part of the pulse water meter access interface and is used for connecting a pulse water meter, wherein P1 is a socket, the socket is specifically selected and used as a socket with the specification of XH-5P-2.54MM and is welded on a PCB circuit board, the socket is provided with 5 pins, the utility model has the advantages that 1 pin of the socket P1 is shared with the pulse sensor in the water meter, the pulse sensor in the water meter is powered by 2 pins, and 3, 4 and 5 pins of the socket P1 are connected with the signal, when in use, the 1-3 paths of pulse signals can be selected and accessed according to the specific type of the selected water meter; as shown in fig. 6, the circuit part of the RS485 direct-reading water meter access interface is shown, when the type of the access water meter is the RS485 direct-reading water meter, the interface is started, the circuit core adopts an interface chip U3 to convert a serial USART signal into an RS485 signal, the interface chip U3 specifically adopts an MAX3485 chip, the module is connected with the access type RS485 water meter through a 2-wire socket P2 to collect water meter water volume data, and the socket P2 specifically adopts an XH-2P-2.54MM socket and is welded on a PCB circuit board.
LED indicating module links to each other with microcontroller U1 for show the operating condition of this module, specifically speaking, the utility model discloses the piece has 2 LED pilot lamps, shows green and yellow respectively in the circular telegram, works as the module activation of awakening up through manual the utility model discloses afterwards, the green LED pilot lamp of controller U1 is bright for instruct NB-IoT module networking state, and yellow LED lamp is used for instructing RS485 direct reading water gauge access interface operating condition in addition, and 2 LED pilot lamps are in the off-state under the non-operating condition.
The specific using process is as follows: the utility model discloses external 7.2V power supplies power, when using, through the utility model discloses a water gauge access interface with the water gauge that awaits measuring link to each other can, during operation, temperature measurement module is used for detecting the operating temperature of PCB circuit board, voltage measurement module is used for detecting supply voltage to finally feed back temperature and mains voltage data to the server of backstage through communication module, so that the server of backstage can carry out real-time control; when the manual awakening function is used, an operator holds a magnet to be close to the manual awakening module, the manual awakening module detects the change of a corresponding magnetic field, the change signal is converted into an electric signal to be sent to the microcontroller U1, and the microcontroller U1 activates the meter reading and reporting functions after receiving the electric signal.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
To sum up the utility model discloses reach anticipated effect.
Claims (8)
1. The utility model provides a multi-functional water gauge data acquisition module, includes PCB circuit board, its characterized in that: the PCB is provided with a power management module, a microcontroller, a voltage measurement module, a temperature measurement module, a communication module, a manual awakening module, an LED indication module, a data memory and a water meter access interface; the power management module is connected with each component and used for providing voltage required by work;
the communication module is connected with the microcontroller and used for uploading data and sending a configuration command through a network;
the voltage measuring module is connected with the microcontroller and used for detecting the voltage of the power supply;
the temperature measuring module is connected with the microcontroller and used for detecting the working temperature of the PCB;
the LED indicating module is connected with the microcontroller and is used for displaying the working state of the module;
the manual wake-up module is connected with the microcontroller and is used for activating the reading and reporting functions after the module detects a signal;
the data memory is connected with the microcontroller and used for storing the acquired data;
the water meter access interface is connected with the microcontroller and used for externally connecting a water meter to be tested, and comprises a pulse water meter access interface and an RS485 direct-reading water meter access interface.
2. The data acquisition module of a multifunctional water meter as set forth in claim 1, wherein: the microcontroller is an STM8L series single-chip microcomputer.
3. The data acquisition module of a multifunctional water meter as set forth in claim 1, wherein: the communication module is a remote BC95 model NB-IoT wireless communication module.
4. The data acquisition module of a multifunctional water meter as set forth in claim 1, wherein: the manual awakening module is a magnetic sensor.
5. The data acquisition module of a multifunctional water meter as set forth in claim 1, wherein: the voltage measurement module adopts a partial pressure detection principle, a detection circuit of the voltage measurement module comprises a voltage input end, an MOS (metal oxide semiconductor) tube, a triode, a voltage detection enabling end and a voltage detection end, the MOS tube is a P-channel field effect tube, and the triode is an NPN-type triode, wherein: the source electrode of the MOS tube is connected with the voltage input end, the grid electrode of the MOS tube is connected with the collector electrode of the triode, the drain electrode of the MOS tube is grounded through two series-connected voltage-dividing resistors, a voltage detection end is connected between the two voltage-dividing resistors, the collector electrode of the triode is connected with the voltage detection end through a resistor, the emitting electrode of the triode is grounded, and the base electrode of the triode is connected with a voltage detection enabling end.
6. The data acquisition module of a multifunctional water meter as set forth in claim 1, wherein: the detection circuit of the temperature measurement module comprises a thermistor, a temperature detection enabling end and a temperature detection end, wherein: one end of the thermistor is connected with the temperature detection end, the other end of the thermistor is grounded, the temperature detection end is connected with the temperature detection enabling end through a resistor, and the temperature detection enabling end is grounded through a capacitor.
7. The data acquisition module of a multifunctional water meter as set forth in claim 6, wherein: the thermistor is a NCP18XH103F03RB type thermistor.
8. The data acquisition module of a multifunctional water meter as set forth in claim 1, wherein: the data memory is an MB85RS256 type ferroelectric random access memory.
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| CN202021075751.7U CN212409807U (en) | 2020-06-11 | 2020-06-11 | Multifunctional water meter data acquisition module |
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| CN202021075751.7U CN212409807U (en) | 2020-06-11 | 2020-06-11 | Multifunctional water meter data acquisition module |
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Denomination of utility model: A multifunctional water meter data acquisition module Granted publication date: 20210126 Pledgee: Suqian branch of Bank of Nanjing Co.,Ltd. Pledgor: JIANGSU ZHONGKE KINGDA IOT Co.,Ltd. Registration number: Y2024980012698 |
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