CN210626973U - Water tower group management system - Google Patents
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- CN210626973U CN210626973U CN201921049807.9U CN201921049807U CN210626973U CN 210626973 U CN210626973 U CN 210626973U CN 201921049807 U CN201921049807 U CN 201921049807U CN 210626973 U CN210626973 U CN 210626973U
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Abstract
The utility model relates to a water tower management technical field, in particular to water tower crowd management system. The water tower group management system is characterized in that: the system comprises a central management system, a fulcrum processing system, a communication system and a power supply system; the central management system comprises a central processing module and a central input/output module, wherein the central processing module is used for receiving the state signals of the water tower group and controlling the work of each module; each fulcrum processing system comprises a signal acquisition module connected with a sensor on the water tower and a main control module for making a corresponding coping mechanism according to the signal; the communication system is composed of a wireless transparent transmission module and comprises a signal transmitting end connected with each fulcrum processing system and a signal receiving end connected with the central management system; the utility model provides a difficult problem of the unable real-time supervision of water tower crowd has avoided appearing the water in the inspection clearance and has overflowed or lack of water in the water tower but can't in time learn and the puzzlement of handling, need not artifical inspection, has saved the cost of labor.
Description
Technical Field
The utility model relates to a water tower management technical field, in particular to water tower crowd management system.
Background
The water tower is mainly used for water storage of a top building in a residential area or used in a production process of a water plant. Due to the high water storage structure, special care and quality guarantee are needed during construction, the water level in the water tower needs to be frequently checked, so that the problem of permanent water leakage or water shortage of the device caused by overhigh or overlow water level is prevented, and the serious consequences are caused if the water level overflows the top of the tower in bad weather or too high water level.
Although water towers are widely applied, products for managing the water towers are lacking in the market, if a water tower group is monitored manually, not only is extremely high labor cost required, but also serious consequences are caused by negligence or untimely disposal, and the market demand cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above shortcoming, a water tower crowd management system is provided, solve the difficult problem of the unable real-time supervision of water tower crowd, avoided appearing the water in the inspection clearance and overflowing or the water-deficient puzzlement that can't in time learn and handle in the water tower, realize through signal acquisition module and communication system in each water tower state of central control room real-time supervision, take the measure according to central input output module's warning when abnormal conditions appear, this system convenient to use, react rapidly to abnormal conditions, and need not artifical inspection, the cost of labor has been saved.
The utility model discloses a following technical scheme realizes: the water tower group management system is characterized in that: the system comprises a central management system, more than one fulcrum processing system arranged at each water tower point, a communication system used for establishing the connection between the central management system and the fulcrum processing systems, and a power supply system used for providing power required by each part of the system;
the central management system comprises
The central processing module is used for receiving the water tower group state signals transmitted by the fulcrum processing systems and controlling the modules to work;
the central input and output module is connected with the central processing module and is used for realizing man-machine interaction with the central management system and monitoring the state of each pivot in real time;
the fulcrum treatment system comprises
The signal acquisition module is connected with a sensor on the water tower and used for transmitting a sensor signal to the fulcrum main control module;
the main control module is used for receiving and processing the sensor signals transmitted by the signal acquisition module and making a corresponding coping mechanism according to the information;
the communication system is composed of a wireless transparent transmission module and comprises a signal transmitting end connected with each fulcrum processing system and a signal receiving end connected with the central management system;
in each fulcrum processing system, the signal acquisition module transmits a sensor signal to the main control module, and the main control module processes corresponding information. The state indication is processed and correspondingly processed, and simultaneously the signal is transmitted to a central management system through a communication system, a central processing module of the central management system indicates and records the state of the water tower according to the received signal, and the instruction from a man-machine interaction system can be remotely controlled to each pivot processing system through a wireless transparent transmission communication module to realize corresponding remote operation.
The working principle and the process are as follows:
and the signal acquisition module in each branch node transmits the sensor signal to the main control module, and the main control module processes corresponding information. The state indication is processed and correspondingly processed, and simultaneously the signal is transmitted to a central management system through a communication system, the main control of the central management system indicates and records the state of the water tower according to the received signal, and the instruction from the man-machine interaction system can be remotely controlled to the branch node through a wireless transparent transmission communication module to realize corresponding remote operation.
For better implementation of the scheme, the following optimization scheme is also provided:
further, in order to optimize the central processing module and the main control module: the central processing module and the main control module both adopt a main control chip ATmega2560-16AU, and also comprise a programming interface and a reset circuit consisting of a capacitor C5, a resistor R30 and an external key S1.
Further, in order to optimize the signal acquisition module: the signal acquisition module is including being used for the signal acquisition interface of being connected with the Sensor, the signal acquisition interface still is equipped with power supply interface DC _24V that is used for the Sensor power supply, is used for being connected with main control module and the signal output interface Sensor _ x of conveying Sensor signal and is used for sharing ground terminal GND with Sensor and system ground.
Further, for convenience, a current output type sensor is used as a signal acquisition tool: the signal acquisition module also comprises a precision resistor for converting the current signal of the current output type sensor into a voltage signal with a peak value within 5V.
Further, in order to optimize the communication system, the use of the communication system is convenient: the communication system selects a wireless transparent transmission module LoRa DRLM16, and further comprises a voltage change circuit for converting different use voltages between the wireless transparent transmission module and a main control module and a central processing unit, and a debugging unit for debugging and upgrading system firmware; the voltage change circuit comprises a voltage reduction circuit and a voltage boosting circuit, the voltage reduction circuit is used for converting the voltage of an IO pin of the main control module processor into the voltage of a wireless transparent transmission module of 3.3V, the voltage boosting circuit is used for converting the voltage of the wireless transparent transmission module of 3.3V into the voltage of the IO pin of the central processing module processor of 5V, and the debugging unit comprises a conversion chip CH340G used for converting a USB into a TTL level.
Further, in order to enable the central control room and the fulcrum to receive the water tower state indication: the central input and output module comprises a first indicator light or a first alarm connected with the central processing module, and a first output circuit arranged between the central processing module and the first indicator light or the first alarm and used for improving the output loading capacity of the main control chip and preventing the main control chip from being damaged by overlarge current; the first output circuit comprises an NPN type triode 8050S, a load relay K1 driven by the triode, a current limiting resistor R34 connected between the output end of the main control chip and the triode, and an output port used for connecting an indicator light or an alarm;
the fulcrum processing system also comprises a fulcrum prompting module which is connected with the main control module and used for prompting the state of the water tower according to the instruction of the main control module; the fulcrum prompting module comprises a second indicator light or a second alarm connected with the main control module, and a second output circuit which is arranged between the main control module and the second indicator light or the second alarm and used for improving the output loading capacity of the main control chip and preventing the main control chip from being damaged by overlarge current; the second output circuit comprises an NPN type triode 8050S, a load relay K1 driven by the triode, a current limiting resistor R34 connected between the output end of the main control chip and the triode, and an output port used for connecting an indicator light or an alarm.
Further, in order to enable the center control room and the fulcrum to be manually controlled by the system module: the central management system further comprises a first external control module, a second external control module, a third external control module and a fourth external control module, wherein the first external control module is connected with the central processing module and used for manually inputting control signals, and the first external control module comprises a first control key, a photoelectric coupler TLP185 connected between the first control key and the central processing module and used for isolating input signals, a current limiting resistor R18 arranged at the input end of the photoelectric coupler and a pull-up resistor R19 arranged at the output end of the photoelectric coupler;
the fulcrum processing system further comprises a second external control module connected with the main control module and used for manually inputting control signals, and the fulcrum processing system comprises a second control key, a photoelectric coupler TLP185 connected between the second control key and the main control module and used for isolating input signals, a current limiting resistor R18 arranged at the input end of the photoelectric coupler, and a pull-up resistor R19 arranged at the output end of the photoelectric coupler.
Further, in order to enable the central control room and the fulcrum to observe the state of the water tower: the central management system also comprises a central display module which is connected with the central processing module and is used for displaying the specific state of each water tower, and the central display module comprises a display HJ _240128 used for displaying more data information and an adjustable resistor R16 used for adjusting the contrast of the display;
the fulcrum processing system also comprises a fulcrum display module which is connected with the main control module and is used for displaying the specific state of a certain water tower, and the fulcrum display module comprises a small-sized display HJ _ LCD12864 or HJ _ LCD12832 used for displaying less data information and an adjustable resistor R16 used for adjusting the contrast of the display.
Furthermore, in order to keep track of the state of each water tower, comparison and prediction are convenient: the central management system also comprises a central recording module which is connected with the central processing module and used for recording the state of each water tower in real time, wherein the central recording module comprises a first clock unit and a first storage unit; the first clock unit consists of a real-time clock chip DS1302 and a crystal oscillator Y2; the first storage unit comprises a storage card provided with a serial peripheral interface and an interface TF1 used for connecting the storage card with a system, wherein the interface TF1 comprises a pin TF _ CS used for enabling the storage card, a pin TF _ CD used for detecting whether the storage card is inserted, a pin SCK used for realizing a synchronous clock, data transmission pins MISO and MOSI and a storage card ground end GND;
the fulcrum processing system also comprises a fulcrum recording module which is connected with the main control module and used for recording the state of a certain water tower in real time, wherein the fulcrum recording module comprises a second clock unit and a second storage unit; the second clock unit consists of a real-time clock chip DS1302 and a crystal oscillator Y2; the second storage unit comprises a storage card provided with a serial peripheral interface and an interface TF1 for connecting the storage card with a system, wherein the interface TF1 comprises a pin TF _ CS for enabling the storage card, a pin TF _ CD for detecting whether the storage card is inserted, a pin SCK for realizing a synchronous clock, data transmission pins MISO and MOSI, and a storage card ground GND.
Further, in order to optimize the power system, the power supply meets the requirements of each module: the power supply system consists of a central power supply system and a fulcrum power supply system, and both comprise a power supply conversion module for converting external power supply DC _24V _ in into internal power supply DC _24V, a power supply conversion module for reconverting DC _24V into voltage meeting the power consumption requirement of each module, and a voltage division current limiting driving module for indicating the power supply state of each module; the power supply conversion module comprises a diode D10 connected with an external power supply DC _24V _ in and a fuse F1 connected with a diode D10; the power conversion module comprises a first conversion circuit for converting DC _24V into DC5V and DC12V respectively, and a second conversion circuit for converting DC5V into DC3.3V; the first conversion circuit comprises power conversion chips LM2596S-5 and LM2596S-12, freewheeling diodes D4 and D5, energy storage filter inductors L1 and L2 and filter capacitors C8 and C23, and the second conversion circuit comprises a conversion chip LM 1117S-3.3; the voltage division current limiting driving module comprises indicator lamps D6-D9 and current limiting resistors R40-R43;
the power supply system also comprises a built-in battery for keeping the state of the system clock when the external power supply is abnormal, and when the external power supply is normal, the fulcrum power supply module trickle charges the built-in battery through the chip DS 1302.
Compare prior art, the beneficial effects of the utility model are that:
1. the utility model provides a water tower crowd management system solves the difficult problem that the water tower crowd can not be supervised in real time, avoids the trouble that water overflows or lacks water in the water tower but can not be known and handled in time when the inspection clearance appears, realizes monitoring each water tower state in real time in the central control room through the signal acquisition module and the communication system, and takes measures according to the alarm of the central input and output module when abnormal conditions appear, the system is convenient to use, the response to abnormal conditions is rapid, and manual inspection is not needed, thereby saving labor cost;
2. the utility model provides a water tower group management system, the central management system and the fulcrum processing system have the functions of prompting, manual external control, displaying and recording, no matter the user is in the central control room or in a specific water tower point, the abnormality of the water tower can be acquired and processed in time, the central control room is convenient to allocate and repair the personnel in time, and the repair work is completed in the water tower point;
3. the utility model provides a water tower crowd management system, the record module that is equipped with record concrete moment information in the record water tower state, and the person of facilitating the use carries out analysis and prediction to this data.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings:
fig. 1 is a structural frame diagram of the water tower group management system of the present invention;
FIG. 2 is a schematic circuit diagram of a main control module and a central processing module;
FIG. 3 is a schematic diagram of a chip circuit of the signal acquisition module;
FIG. 4 is a schematic diagram of a chip circuit of the communication system;
FIG. 5 is a schematic diagram of a chip circuit of the central input/output module and the fulcrum prompting module;
FIG. 6 is a schematic diagram of a chip circuit of the external control module;
FIG. 7 is a schematic diagram of a chip circuit of the display module;
FIG. 8 is a schematic diagram of a chip circuit of the power system;
Detailed Description
The invention is described in detail below with reference to the drawings and specific examples:
the water tower group management system is characterized in that: the system comprises a central management system, more than one fulcrum processing system arranged at each water tower point, a communication system used for establishing the connection between the central management system and the fulcrum processing systems, and a power supply system used for providing power required by each part of the system;
the central management system comprises
The central processing module is used for receiving the water tower group state signals transmitted by the fulcrum processing systems and controlling the modules to work;
the central input and output module is connected with the central processing module and is used for realizing man-machine interaction with the central management system and monitoring the state of each pivot in real time;
the fulcrum treatment system comprises
The signal acquisition module is connected with a sensor on the water tower and used for transmitting a sensor signal to the fulcrum main control module;
the main control module is used for receiving and processing the sensor signal transmitted by the signal acquisition module and making corresponding coping mechanisms according to the information, such as processing mechanisms of turning on a water pump, closing a valve, starting an alarm and the like;
the communication system is composed of a wireless transparent transmission module and comprises a signal transmitting end connected with each fulcrum processing system and a signal receiving end connected with the central management system;
in each fulcrum processing system, the signal acquisition module transmits a sensor signal to the main control module, and the main control module processes corresponding information. The state indication is processed and correspondingly processed, and simultaneously the signal is transmitted to a central management system through a communication system, a central processing module of the central management system indicates and records the state of the water tower according to the received signal, and the instruction from a man-machine interaction system can be remotely controlled to each pivot processing system through a wireless transparent transmission communication module to realize corresponding remote operation.
As shown in fig. 2, the central processing module and the main control module both use a main control chip ATmega2560-16AU, and further include a programming interface and a reset circuit composed of a capacitor C5, a resistor R30 and an external key S1.
As shown in fig. 3, the signal acquisition module includes signal acquisition interfaces P18-P25 for connecting with sensors,
the signal acquisition interface is also provided with a power supply interface DC _24V for supplying power to the Sensor, a signal output interface Sensor _ x for connecting with the main control module and transmitting a Sensor signal, and a common ground end GND for grounding the Sensor and the system.
The signal acquisition module also comprises precision resistors R47-R54 for converting the current signal of the current output type sensor into a voltage signal within 5V.
Because the Sensor has a voltage output type and a current output type, the system defaults to use a voltage output type Sensor with an output range of 0-5V, if a 4-20mA current output type Sensor is used, a common ground end GND can be disconnected, only DC _24V and Sensor _ x are connected, corresponding current is converted into a voltage signal within 5V through precise resistors R47-R54, if the output current is 20mA, the converted voltage is 20mA, 250 omega, 5000mV, namely 5V, and finally the voltage signal is transmitted to an analog-digital conversion port of the main control chip.
As shown in fig. 4, the communication system selects the wireless transparent transmission module LoRa DRLM16, and further includes a voltage change circuit for converting different voltages used between the wireless transparent transmission module and the main control module and the central processing unit, and a debugging unit for debugging and upgrading system firmware;
the voltage change circuit comprises a voltage reduction circuit for converting the voltage of an IO pin of the main control module processor into the voltage of 3.3V of the wireless transparent transmission module and a voltage boosting circuit for converting the voltage of 3.3V of the wireless transparent transmission module into the IO voltage of 5V of the central processing module processor,
the debug unit includes a conversion chip CH340G for implementing USB to TTL levels.
The wireless transparent transmission module RoLa DRLM16 has a theoretical transmission distance of 3km, and transmission in an open area of 16km can completely meet equipment group management, however, the module adopts 3.3V power supply and has a pin voltage limit of 3.3V and cannot directly communicate with a main control chip 5V, so that a voltage reduction circuit of 3.3V-5V and a voltage boosting circuit of 5V-3.3V are introduced into the system, for example, in the figure, a point voltage reduction circuit consisting of R6, R7 and Q1 cuts off a triode Q1 to output a high level under the action of a pull-up resistor R7 when the output of MCU _ TXD2 is a high level, and conducts an LM16_ RXD to output a low level when the output of MCU _ TXD 387D 5 is a low level, and outputs a high level of 3.3V because the power supply voltage of the pull-up resistor R7 is 3.3V; for a 3.3V to 5V circuit, a 3.3V direct drive can be adopted theoretically, but the problems that the output voltage is insufficient and cannot reach a high level jump threshold or the signal rising edge is too long and the like exist, so a corresponding conversion circuit is introduced, for example, when the LM16_ AUX output is in a high level, the emitter junction potential difference of the triode Q4 is 0, the triode is cut off, the MCU _ AUX output is in a high level (5V) under the action of the pull-up resistor R13, when the LM16_ AUX output is in a low level, the emitter junction of the triode Q4 exists the potential difference, the triode conduction collector junction voltage is approximately zero, and the MCU _ AUX output is in a low level (0V).
The wireless transparent transmission module Rola is internally provided with an identification code, only data transmitted among modules with the same identification code can be effectively reserved, in order to avoid crosstalk among a plurality of sets of systems in the same region, the system reserves all functions of the wireless transparent transmission module (namely, communication among AUX, MS1, MS2 and a main control chip is reserved) and automatically reconfigures module parameters every time the system is powered on, each set of system uses a unique group of identification codes, and when the modules are in failure or damaged, a good module can be directly replaced.
Meanwhile, the system adopts the level conversion chip CH340G as a USB-to-serial port communication module, can be used as system programming and debugging, and can update the system firmware at any time only by one USB wire.
As shown in fig. 5, the central input/output module includes a first indicator light or a first alarm connected to the central processing module, and a first output circuit disposed between the central processing module and the first indicator light or the first alarm and used for improving the output loading capacity of the main control chip and preventing the main control chip from being damaged by excessive current;
the first output circuit comprises an NPN type triode 8050S, a load relay K1 driven by the triode, a current limiting resistor R34 connected between the output end of the main control chip and the triode, and an output port used for connecting an indicator light or an alarm;
the fulcrum processing system further comprises
The fulcrum prompting module is connected with the main control module and used for prompting the state of the water tower according to the instruction of the main control module;
the fulcrum prompting module comprises a second indicator light or a second alarm connected with the main control module, and a second output circuit which is arranged between the main control module and the second indicator light or the second alarm and used for improving the output loading capacity of the main control chip and preventing the main control chip from being damaged by overlarge current;
the second output circuit comprises an NPN type triode 8050S, a load relay K1 driven by the triode, a current limiting resistor R34 connected between the output end of the main control chip and the triode, and an output port used for connecting an indicator light or an alarm.
Because the Output load capacity of the port of the main control chip is limited, and the port also has the problem of voltage limitation, in order to improve the load capacity of the system and simultaneously protect the chip from being abnormally burnt by external power supply, the system adopts an NPN type triode 8050S (Q7) to drive a load relay K1, and simultaneously, when the main control chip outputs high level, the IO pin of the chip is prevented from being damaged due to overlarge Output current or the base stage of the driving triode is prevented from being serially connected into a current limiting resistor R34 between the main control Output port and the base stage of the driving triode, so that the safe and reliable operation of the system is ensured, finally, corresponding indicating equipment is connected to an Output port P11 (taking the first Output _0 as an example), and when the external is high-power equipment, the voltage of the P11 load coil is a 24V alternating current contactor or an intermediate relay with.
As shown in fig. 6, the central management system further includes
The first external control module is connected with the central processing module and used for manually inputting control signals, and comprises a first control key, a photoelectric coupler TLP185 connected between the first control key and the central processing module and used for isolating input signals, a current limiting resistor R18 arranged at the input end of the photoelectric coupler and a pull-up resistor R19 arranged at the output end of the photoelectric coupler;
the fulcrum processing system further comprises
The second external control module is connected with the main control module and used for manually inputting control signals, and comprises a second control key, a photoelectric coupler TLP185 connected between the second control key and the main control module and used for isolating input signals, a current-limiting resistor R18 arranged at the input end of the photoelectric coupler, and a pull-up resistor R19 arranged at the output end of the photoelectric coupler.
In order to avoid the situation that the voltage on the IO pin of the main control chip is too high to damage the main control chip due to abnormal external power supply or harsh environment, the external control module adopts a photoelectric coupler TLP185 to isolate and process an input signal, an external control signal enters an optical coupler U2 through a current limiting resistor R18, when a signal is input, the photoelectric coupler outputs a triode conduction output signal in _0 to be short-circuited to the ground and outputs a low level, when no signal is input, the output triode is cut off, and the output end is open to the ground, and a high level is output under the action of a pull-up resistor R19.
As shown in fig. 7, the central management system further includes
The central display module is connected with the central processing module and is used for displaying the specific state of each water tower, and the central display module comprises a display HJ _240128 used for displaying more data information and an adjustable resistor R16 used for adjusting the contrast of the display;
the fulcrum processing system further comprises
And the fulcrum display module is connected with the main control module and is used for displaying the specific state of a certain water tower, and comprises a small display HJ _ LCD12864 or HJ _ LCD12832 for displaying less data information and an adjustable resistor R16 for adjusting the contrast of the display.
In order to achieve a better display effect, two problems of display backlight and display contrast adjustment are involved, the contrast adjustment is carried out as required through an adjustable resistor R16, and the brightness is intelligently adjusted through a main control chip.
As shown in fig. 2, the central management system further comprises
The central recording module is connected with the central processing module and used for recording the states of the water towers in real time, and comprises a first clock unit and a first storage unit;
the first clock unit consists of a real-time clock chip DS1302 and a crystal oscillator Y2;
the first storage unit comprises a storage card provided with a serial peripheral interface and an interface TF1 used for connecting the storage card with a system, wherein the interface TF1 comprises a pin TF _ CS used for enabling the storage card, a pin TF _ CD used for detecting whether the storage card is inserted, a pin SCK used for realizing a synchronous clock, data transmission pins MISO and MOSI and a storage card ground end GND;
the fulcrum processing system further comprises
The fulcrum recording module is connected with the main control module and used for recording the state of a certain water tower in real time and comprises a second clock unit and a second storage unit;
the second clock unit consists of a real-time clock chip DS1302 and a crystal oscillator Y2;
the second storage unit comprises a storage card provided with a serial peripheral interface and an interface TF1 for connecting the storage card with a system, wherein the interface TF1 comprises a pin TF _ CS for inserting the storage card, a pin TF _ CD for detecting whether the storage card is inserted, a pin SCK for connecting a clock unit, data transmission pins MISO and MOSI, and a storage card ground GND.
In order to conveniently know the system state and search system abnormal records when recording the states of all the water pools, the system introduces a real-time clock module DS1302, records specific time information while recording the states of the water pools, and can analyze and predict data. The data volume of the system state information is huge, so that an external storage medium is adopted to store corresponding data information, the system adopts a TF card of an SPI communication interface to store data, and TF1 in the figure is a TF card interface.
The power supply system is composed of a central power supply system and a fulcrum power supply system, and as shown in fig. 8, the power supply system includes a power supply conversion module for converting external power supply DC _24V _ in into internal power supply DC _24V, a power supply conversion module for reconverting DC _24V into voltage meeting power consumption requirements of each module, and a voltage division and current limitation driving module for indicating power supply states of each module;
the power supply conversion module comprises a diode D10 connected with an external power supply DC _24V _ in and a fuse F1 connected with a diode D10;
the power conversion module comprises a first conversion circuit for converting DC _24V into DC5V and DC12V respectively, and a second conversion circuit for converting DC5V into DC3.3V; the first conversion circuit comprises power conversion chips LM2596S-5 and LM2596S-12, freewheeling diodes D4 and D5, energy storage filter inductors L1 and L2 and filter capacitors C8 and C23, and the second conversion circuit comprises a conversion chip LM 1117S-3.3;
the voltage division current limiting driving module comprises indicator lamps D6-D9 and current limiting resistors R40-R43;
the power supply system further comprises a built-in battery for supplying power when the external power supply is abnormal, and the fulcrum power supply module trickle charges the built-in battery through the chip DS1302 when the external power supply is normal.
The power supply system adopts DC24V input, DC24V is generated by an external AC/DC power adapter, the output of the power adapter is larger than 24V1A according to the actual power consumption requirement, external power supply DC _24V _ in the power supply conversion module is prevented from reverse connection through a diode D10(ER3A, or a common rectifier diode is used for replacing) and then generates a DC _24V power supply through a recoverable protective tube F1, and the module has the following functions: the power supply is firstly used as a power supply source of a power supply conversion circuit, secondly used as a sensor for supplying power for water level, water pressure and the like (normal 24V power supply, the power supply range is generally between DC12V and DC 28V), and thirdly used as an audible and visual alarm system for supplying power such as an indicator light, a buzzer and the like.
The power conversion module generates DC12V, DC5V and DC3.3V from DC24V according to the power demand of a system, and power supply parts of 12V and 5V are all composed of a power conversion chip LM2596S, the power supply conversion chips adopt fixed output chips, namely LM2596S-5 and LM2596S-12 according to the principle of least external elements, the output power supply is directly fed back to a fourth pin (FB port) of the chip, a drive switch tube is arranged in the LM2596 chip to directly output a PWM power signal with 150KHZ current peak value reaching 3A, and the power supply conversion chips have the functions of output short-circuit protection, output overload protection and the like, only one free wheel diode (such as D4 and D5 in the figure), one energy storage filter inductor (such as L1 and L2 in the figure) and a corresponding filter capacitor are required externally while the system requirements are met, because the switching frequency reaches 150Khz, the capacity of the energy storage filter inductor and the capacitor can be greatly reduced, the cost is saved, and the space is saved. DC3.3V part considers that the power consumption of the electric equipment is low, and DC5V is arranged in the system, the voltage difference between the two is small, LM1117S-3.3 is directly adopted to form a linear voltage-stabilized power supply, and the requirements of energy saving and cost saving can be achieved while the power supply requirement is met.
The voltage division current limiting driving circuit composed of D6, D7, D8, D9, R40, R41, R42 and R43 in the voltage division current limiting driving module is used as a DC24V, DC12V, DC5V and DC3.3V power supply state indicator lamp, and the detection of the power supply state of the system can be simplified and clarified.
The above-mentioned specific implementation is only to explain in detail the technical solution of the present invention, the present invention is not limited to the above-mentioned embodiments, and any improvement or replacement according to the principle of the present invention should be within the protection scope of the present invention.
Claims (10)
1. The water tower group management system is characterized in that: the system comprises a central management system, more than one fulcrum processing system arranged at each water tower point, a communication system used for establishing the connection between the central management system and the fulcrum processing systems, and a power supply system used for providing power required by each part of the system;
the central management system comprises
The central processing module is used for receiving the water tower group state signals transmitted by the fulcrum processing systems and controlling the modules to work;
the central input and output module is connected with the central processing module and is used for realizing man-machine interaction with the central management system and monitoring the state of each pivot in real time;
the fulcrum treatment system comprises
The signal acquisition module is connected with a sensor on the water tower and used for transmitting a sensor signal to the fulcrum main control module;
the main control module is used for receiving and processing the sensor signals transmitted by the signal acquisition module and making a corresponding coping mechanism according to the information;
the communication system is composed of a wireless transparent transmission module and comprises a signal transmitting end connected with each fulcrum processing system and a signal receiving end connected with the central management system;
the signal acquisition module in each fulcrum processing system transmits a sensor signal to the main control module, the main control module processes corresponding information, processes and correspondingly processes a state indication and transmits the signal to the central management system through the communication system, the central processing module of the central management system indicates and records the state of the water tower according to the received signal, and the central processing module can remotely control each fulcrum processing system through the wireless transparent transmission communication module to realize corresponding remote operation.
2. The water tower cluster management system of claim 1, wherein: the central processing module and the main control module both adopt a main control chip ATmega2560-16AU, and also comprise a programming interface and a reset circuit consisting of a capacitor C5, a resistor R30 and an external key S1.
3. The water tower cluster management system of claim 1, wherein: the signal acquisition module comprises a signal acquisition interface used for being connected with the sensor,
the signal acquisition interface is also provided with a power supply interface DC _24V for supplying power to the Sensor, a signal output interface Sensor _ x for connecting with the main control module and transmitting a Sensor signal, and a common ground end GND for grounding the Sensor and the system.
4. The water tower cluster management system of claim 3, wherein: the signal acquisition module also comprises a precision resistor for converting the current signal of the current output type sensor into a voltage signal with a peak value within 5V.
5. The water tower cluster management system of claim 1, wherein: the communication system selects a wireless transparent transmission module LoRa DRLM16, and further comprises a voltage change circuit for converting different use voltages between the wireless transparent transmission module and a main control module and a central processing unit, and a debugging unit for debugging and upgrading system firmware;
the voltage change circuit comprises a voltage reduction circuit for converting the voltage of an IO pin of the main control module processor into the voltage of 3.3V of the wireless transparent transmission module and a voltage boosting circuit for converting the voltage of 3.3V of the wireless transparent transmission module into the IO voltage of 5V of the central processing module processor,
the debug unit includes a conversion chip CH340G for implementing USB to TTL levels.
6. The water tower cluster management system according to any one of claims 1-5, wherein: the central input and output module comprises a first indicator light or a first alarm connected with the central processing module, and a first output circuit arranged between the central processing module and the first indicator light or the first alarm and used for improving the output loading capacity of the main control chip and preventing the main control chip from being damaged by overlarge current;
the first output circuit comprises an NPN type triode 8050S, a load relay K1 driven by the triode, a current limiting resistor R34 connected between the output end of the main control chip and the triode, and an output port used for connecting an indicator light or an alarm;
the fulcrum processing system further comprises
The fulcrum prompting module is connected with the main control module and used for prompting the state of the water tower according to the instruction of the main control module;
the fulcrum prompting module comprises a second indicator light or a second alarm connected with the main control module, and a second output circuit which is arranged between the main control module and the second indicator light or the second alarm and used for improving the output loading capacity of the main control chip and preventing the main control chip from being damaged by overlarge current;
the second output circuit comprises an NPN type triode 8050S, a load relay K1 driven by the triode, a current limiting resistor R34 connected between the output end of the main control chip and the triode, and an output port used for connecting an indicator light or an alarm.
7. The water tower cluster management system according to any one of claims 1-5, wherein: the central management system further comprises
The first external control module is connected with the central processing module and used for manually inputting control signals, and comprises a first control key, a photoelectric coupler TLP185 connected between the first control key and the central processing module and used for isolating input signals, a current limiting resistor R18 arranged at the input end of the photoelectric coupler and a pull-up resistor R19 arranged at the output end of the photoelectric coupler;
the fulcrum processing system further comprises
The second external control module is connected with the main control module and used for manually inputting control signals, and comprises a second control key, a photoelectric coupler TLP185 connected between the second control key and the main control module and used for isolating input signals, a current-limiting resistor R18 arranged at the input end of the photoelectric coupler, and a pull-up resistor R19 arranged at the output end of the photoelectric coupler.
8. The water tower cluster management system according to any one of claims 1-5, wherein: the central management system further comprises
The central display module is connected with the central processing module and is used for displaying the specific state of each water tower, and the central display module comprises a display HJ _240128 used for displaying more data information and an adjustable resistor R16 used for adjusting the contrast of the display;
the fulcrum processing system further comprises
And the fulcrum display module is connected with the main control module and is used for displaying the specific state of a certain water tower, and comprises a small display HJ _ LCD12864 or HJ _ LCD12832 for displaying less data information and an adjustable resistor R16 for adjusting the contrast of the display.
9. The water tower cluster management system according to any one of claims 1-5, wherein: the central management system further comprises
The central recording module is connected with the central processing module and used for recording the states of the water towers in real time, and comprises a first clock unit and a first storage unit;
the first clock unit consists of a real-time clock chip DS1302 and a crystal oscillator Y2;
the first storage unit comprises a storage card provided with a serial peripheral interface and an interface TF1 used for connecting the storage card with a system, wherein the interface TF1 comprises a pin TF _ CS used for enabling the storage card, a pin TF _ CD used for detecting whether the storage card is inserted, a pin SCK used for realizing a synchronous clock, data transmission pins MISO and MOSI and a storage card ground end GND;
the fulcrum processing system further comprises
The fulcrum recording module is connected with the main control module and used for recording the state of a certain water tower in real time and comprises a second clock unit and a second storage unit;
the second clock unit consists of a real-time clock chip DS1302 and a crystal oscillator Y2;
the second storage unit comprises a storage card provided with a serial peripheral interface and an interface TF1 for connecting the storage card with a system, wherein the interface TF1 comprises a pin TF _ CS for enabling the storage card, a pin TF _ CD for detecting whether the storage card is inserted, a pin SCK for realizing a synchronous clock, data transmission pins MISO and MOSI, and a storage card ground GND.
10. The water tower cluster management system according to any one of claims 1-5, wherein: the power supply system consists of a central power supply system and a fulcrum power supply system, and both comprise a power supply conversion module for converting external power supply DC _24V _ in into internal power supply DC _24V, a power supply conversion module for reconverting DC _24V into voltage meeting the power consumption requirement of each module, and a voltage division current limiting driving module for indicating the power supply state of each module;
the power supply conversion module comprises a diode D10 connected with an external power supply DC _24V _ in and a fuse F1 connected with a diode D10;
the power conversion module comprises a first conversion circuit for converting DC _24V into DC5V and DC12V respectively, and a second conversion circuit for converting DC5V into DC3.3V; the first conversion circuit comprises power conversion chips LM2596S-5 and LM2596S-12, freewheeling diodes D4 and D5, energy storage filter inductors L1 and L2 and filter capacitors C8 and C23, and the second conversion circuit comprises a conversion chip LM 1117S-3.3;
the voltage division current limiting driving module comprises indicator lamps D6-D9 and current limiting resistors R40-R43;
the power supply system also comprises a built-in battery for keeping the state of the system clock when the external power supply is abnormal, and when the external power supply is normal, the fulcrum power supply module trickle charges the built-in battery through the chip DS 1302.
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| CN110209139A (en) * | 2019-07-05 | 2019-09-06 | 福建师范大学福清分校 | Water tower cluster management system |
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| CN110209139A (en) * | 2019-07-05 | 2019-09-06 | 福建师范大学福清分校 | Water tower cluster management system |
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