Water-saving and power-saving water quality on-line monitoring system and control method

Abstract

The invention discloses a water-saving and power-saving water quality on-line monitoring system and a control method, and the water-saving and power-saving water quality on-line monitoring system has the advantages that the basic water flow in the water quality detection process is reduced through a pressure reducing valve and a throttle valve, a water quality analysis module is ensured to work under proper water pressure, the detection is accurate, and the service life is prolonged; a first electromagnetic valve is arranged on the detection water path, the first electromagnetic valve is closed in the detection intermittent period to completely stop water flow, the water sample consumption is reduced, and the first electromagnetic valve and a second electromagnetic valve are opened in the cleaning process to increase the flow speed so as to shorten the cleaning time and reduce the water consumption; the first electromagnetic valve and the second electromagnetic valve are normally-closed self-locking electromagnetic valves, and only a small amount of electric energy needs to be consumed when working modes are switched; the system is dormant when entering an intermittent period, power consumption is reduced, power can be supplied through the power supply module, arrangement of wires is reduced, and cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality monitoring equipment and control methods, and in particular to a water-saving and power-saving water quality online monitoring system and control method. Background Art

[0002] With the development of social economy and the improvement of people's living standards, higher and higher requirements are put forward for the quality of tap water supply. In order to achieve this goal, multi-parameter water quality monitoring technology of tap water supply network came into being. This measure is a powerful means to ensure that the quality of tap water supply meets the standards.

[0003] In this field, traditionally, most people use a large amount of external drainage water quality testing to monitor multiple water quality parameters. The water quality testing process itself leads to a large amount of water resources being wasted, which is not conducive to building a resource-saving society, nor is it conducive to the water company controlling the production and sales gap, and needs to be improved urgently. Summary of the invention

[0004] The embodiment of the present invention provides a water-saving and power-saving water quality online monitoring system and a control method with low wastewater volume and low energy consumption.

[0005] The technical solution adopted by the present water quality online monitoring system to solve the above-mentioned problem is: a water-saving and power-saving water quality online monitoring system, comprising a controller, a communication module for uploading water quality monitoring data, and a filter, a pressure reducing valve, a first solenoid valve and a water quality analysis module for detecting multiple water quality parameters which are sequentially connected to the detection water path, the communication module, the first solenoid valve and the water quality analysis module are electrically connected to the controller respectively, a throttle valve is provided between the water quality analysis module and the drain pipe; a cleaning bypass is also connected between the water quality analysis module and the drain pipe, a second solenoid valve is provided on the cleaning bypass, and the second solenoid valve is electrically connected to the controller; The first solenoid valve and the second solenoid valve are normally closed self-locking solenoid valves; The controller is used to open the first solenoid valve when detecting the water sample; The controller is used to open the first solenoid valve and the second solenoid valve simultaneously when cleaning the detection water channel.

[0006] Compared with the existing technology, the technical solution of this water-saving and power-saving water quality online monitoring system has the advantages of reducing the basic water flow rate in the water quality detection process through the pressure reducing valve and the throttle valve, and ensuring that the water quality analysis module works under appropriate water pressure, the detection is accurate and the service life is extended. A first solenoid valve is arranged on the detection water path. The first solenoid valve is closed during the detection interval to completely stop the water flow, thereby reducing the water sample consumption. During cleaning, the first solenoid valve and the second solenoid valve are opened to increase the flow rate to shorten the cleaning time and reduce water consumption. Moreover, the first solenoid valve and the second solenoid valve are both normally closed self-locking solenoid valves, and only a small amount of electrical energy is consumed to switch the working mode.

[0007] As an improvement, a quick-plug water connection head for quick connection with the tested pipe is provided on one side of the box, and the quick-plug water connection head is connected to the filter through a hose; a first quick-plug water outlet head and a second quick-plug water outlet head are provided on the other side of the box for quick connection with the drain pipe, and the first quick-plug water outlet head and the second quick-plug water outlet head are connected to the detection chamber through a three-way joint, the throttle valve is connected between the three-way joint and the first quick-plug water outlet head, and the second solenoid valve is connected between the three-way joint and the second quick-plug water outlet head. It is convenient to upgrade and transform the existing water supply network monitoring system, and can also reduce the later disassembly and replacement.

[0008] As an improvement, the solenoid valve driving circuit of the self-locking solenoid valve is provided with a first signal access pin and a second signal access pin for receiving a control signal on its chip, and is also provided with a first output pin and a second output pin respectively electrically connected to the two poles of the self-locking solenoid valve, and a capacitor is connected between the first output pin and the second output pin; When no control signal is received, the first signal access pin and the second signal access pin are at a low level, the first output pin and the second output pin have no voltage output, and the self-locking solenoid valve maintains the original state; When receiving an opening signal, the first signal access pin is at a high level and the second signal access pin is at a low level, the first output pin outputs a positive voltage, the second output pin outputs a negative voltage, and the self-locking solenoid valve is switched to an open state; When receiving the closing signal, the first signal access pin is at a low level and the second signal access pin is at a high level, the first output pin outputs a negative voltage, the second output pin outputs a positive voltage, and the self-locking solenoid valve is switched to a closed state. Less power is required to switch the working state of the self-locking solenoid valve, providing a basis for realizing a cleaning method of a water quality monitoring system with less energy consumption.

[0009] As an improvement, the power supply driving circuit of the water quality analysis module is used to convert the voltage provided by the power supply module into the power supply voltage of the water quality analysis module when the water quality analysis module needs to detect the water quality of the sample water, and includes a switch module, a voltage regulating module and an output module; the switch module is used to receive a control signal and be turned on according to the control signal; the voltage regulating module is used to receive the voltage provided by the power supply module and provide current to the output module when the switch module is turned on, and the output module is used to work after obtaining the current to output the power supply voltage to the water quality sensor; The voltage regulating module includes a driving chip, a control pin of the driving chip is connected to the switch module; a driving pin of the driving chip is connected to the gate of the field effect tube, a plurality of source electrodes of the field effect tube are connected between the first resistor and the second resistor, a plurality of drain electrodes of the field effect tube are connected to the output module, the other end of the second resistor is grounded, and the other end of the first resistor is connected to the enable pin of the driving chip; the enable pin is grounded through a first capacitor; a compensation pin of the driving chip is grounded through a second capacitor, and the compensation pin is also grounded through a third resistor and a third capacitor connected in series, a voltage input pin of the driving chip is connected to the pin VBAT of the power module and is connected in parallel with a fourth capacitor and a fifth capacitor, a feedback pin of the driving chip is connected to the output module through a fourth resistor, and the feedback pin of the driving chip is also grounded through a fifth resistor; The output module includes a first inductor, a sixth capacitor, a second inductor, a diode and a seventh capacitor, one end of the first inductor is connected to the pin VBAT of the power module, the other end of the first inductor is connected to the drain of the field effect tube, the other end of the first inductor is connected to the water quality analysis module through the sixth capacitor and the diode in sequence, one end of the second inductor is connected between the sixth capacitor and the diode, and the other end of the second inductor is grounded; one end of the seventh capacitor is grounded, and the other end of the seventh capacitor is connected between the diode and the water quality analysis module; one end of the fourth resistor is connected between the diode and the water quality analysis module; The switch module includes a MOS tube, a sixth resistor, a seventh resistor and an eighth resistor; the gate of the MOS tube is used to receive the control signal, the gate of the MOS tube is connected to the electrode VCC through the eighth resistor, the source of the MOS tube is grounded, the drain of the MOS tube is connected to the control pin of the driver chip through the sixth resistor, and the drain of the MOS tube is also connected to the electrode VCC through the seventh resistor. The power supply drive circuit of the water quality analysis module is a power conversion circuit built with the voltage regulation module as the core, which converts the voltage provided by the power supply module into the power supply voltage of the water quality sensor. Through the control instructions of the controller logic program, the power supply on and off of the water quality sensor is controlled, so that it is powered on during the detection time and powered off during the non-detection time. Only when the control instruction is received, the water quality sensor is provided with a suitable voltage, so that the water quality analysis module enters normal operation and consumes less energy.

[0010] The technical solution adopted by the present control method to solve another problem is: a control method for a water-saving and power-saving online water quality monitoring system, based on the above-mentioned water-saving and power-saving online water quality monitoring system, specifically includes the following steps: the water-saving and power-saving online water quality monitoring system triggers a collection and reporting task every time N3, the controller controls to open the first solenoid valve, waits for N1 time for the sample water to fill the detection chamber, the controller turns on the power supply drive circuit of the water quality analysis module to make the water quality analysis module enter the working state and start to detect various water quality parameters of the sample water, after waiting for N2 time, the controller collects the water quality data of the sample water output by the water quality analysis module, the controller processes the water quality data and reports it to the management platform, and at the same time the controller controls to close the first solenoid valve, the controller controls to close the power supply of the water quality analysis module, and then the water-saving and power-saving online water quality monitoring system enters the intermittent period and sleeps. Compared with the prior art, the technical solution of the control method of the water-saving and power-saving water quality online monitoring system has the advantages of reducing the basic water flow rate in the water quality detection process through the pressure reducing valve and the throttle valve, and ensuring that the water quality analysis module works under appropriate water pressure, the detection is accurate and the service life is extended, and a first solenoid valve is arranged on the detection water path. The first solenoid valve is closed during the detection interval to completely stop the water flow, thereby reducing the water sample consumption. During cleaning, the first solenoid valve and the second solenoid valve are opened to increase the flow rate to shorten the cleaning time and reduce the water consumption; and the first solenoid valve and the second solenoid valve are both normally closed self-locking solenoid valves, and only a small amount of electrical energy is consumed to switch the working mode; the system goes into sleep mode during the interval to reduce power consumption, and can be powered by a power module, thereby reducing the layout of wires and reducing costs.

[0011] Preferably, the water-saving and power-saving online water quality monitoring system also includes a Bluetooth module, which is electrically connected to the controller; the Bluetooth module is used to be in the highest power consumption transparent transmission mode when connected by a Bluetooth client, and the Bluetooth module is used to automatically enter the sleep mode when not connected by the Bluetooth client.

[0012] The Bluetooth module is in sleep mode and enters command mode after being manually awakened by a magnet and a reed switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the monitoring method of the water-saving and power-saving water quality online monitoring system of the present invention.

[0014] Figure 2 It is a front view of the water-saving and power-saving water quality online monitoring system of the present invention in an open state.

[0015] Figure 3 It is a right-side stereoscopic diagram of the water-saving and power-saving water quality online monitoring system of the present invention in an open state.

[0016] Figure 4It is an overall flow chart of the water quality monitoring process of the water-saving and power-saving water quality online monitoring system of the present invention.

[0017] Figure 5 It is a detailed process diagram of the water quality monitoring process of the water-saving and power-saving water quality online monitoring system of the present invention.

[0018] Figure 6 It is a control circuit diagram of the water-saving and power-saving water quality online monitoring system of the present invention.

[0019] Figure 7 It is a sleep control flow chart of the RTU of the water-saving and power-saving water quality online monitoring system of the present invention.

[0020] Figure 8 It is a sleep control flow chart of the communication module of the water-saving and power-saving water quality online monitoring system of the present invention.

[0021] Fig. 9 This is a sleep control flow chart of the Bluetooth module of the water-saving and power-saving water quality online monitoring system of the present invention.

[0022] Fig.10 It is a control circuit diagram of a self-locking electromagnetic valve of a water-saving and power-saving water quality online monitoring system of the present invention.

[0023] Fig.11 The invention discloses a power supply on-off control circuit diagram of a water quality analysis module of a water-saving and power-saving water quality online monitoring system. DETAILED DESCRIPTION

[0024] The following is a description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0025] This preferred embodiment is for example Figure 2 and 3 The figure shows a water-saving and power-saving water quality online monitoring system, which includes a battery 1 and a controller 2 installed in the upper part of a box 11, a communication module for uploading water quality monitoring data, and the communication module includes an antenna arranged outside the box 11, a filter 3 arranged in the lower part of the box 11 and connected to the detection water path in sequence, a pressure reducing valve 4, a first solenoid valve 5 (attached Figure 1 , 4-6 is marked as a solenoid valve 1) and a water quality analysis module 6 for detecting multiple water quality parameters, the communication module, the first solenoid valve 5 and the water quality analysis module 6 are electrically connected to the controller 2 respectively, and a throttle valve 8 is provided between the water quality analysis module 6 and the drain pipe; a cleaning bypass is connected between the water quality analysis module 6 and the drain pipe, and a second solenoid valve 7 is provided on the cleaning bypass (see Appendix Figure 1 , 4 -6 is marked as solenoid valve 2), and the second solenoid valve 7 is electrically connected to the controller 2.

[0026] In this embodiment, if Figure 6 As shown, the controller 2 is an RTU, i.e., a remote terminal control unit, which can be connected to a wired network through a serial port, or connected to a mobile phone APP of a nearby water quality detection manager through a Bluetooth module, or upload water quality monitoring data to a water quality monitoring platform through other wireless communication modules.

[0027] The water quality analysis module 6 includes a detection chamber (not shown in the figure) connected to the detection water path and multiple types of water quality analysis modules and a collection line 9 connected to each interface of the detection chamber, and the multiple types of water quality analysis modules are electrically connected to the controller 2 through the collection line 9. The multiple types of water quality analysis modules are residual chlorine sensors, pH sensors, turbidity sensors, and conductivity sensors. Here, the detection chamber is a flow pool formed by assembling multiple sensor mounting seats, and the number of sensor mounting seats can be increased or decreased according to the number of water quality parameters that need to be detected.

[0028] The water-saving and power-saving water quality online monitoring system monitors the water pipes under test in the following ways: Figure 1 The overall control method is as shown in Figure 4 , triggering a collection and reporting task every time N3, controller 2 controls to open the first electromagnetic valve 5, waits for N1 time for the sample water to fill the detection chamber, controller 2 controls to open the power supply drive circuit of the water quality analysis module 6 (turns on the sensor power supply) so that the water quality analysis module 6 starts to detect various water quality parameters of the sample water, waits for N2 time and collects various water quality data of the sample water on the water quality analysis module 6, controller 2 processes the water quality data and reports it to the management platform, and at the same time closes the first electromagnetic valve 5, turns off the power supply of the water quality analysis module 6, and enters the intermittent sleep period. More specifically, as Figure 5As shown, the function of collecting the RTU power supply voltage is added to realize the monitoring function of the external power supply status; the function of collecting the power supply voltage of the water quality analysis module is added to realize the monitoring function of the power supply status of the water quality analysis module; the specific collection process of the various water parameter data of the water quality analysis module is refined, and the residual chlorine value, pH value, turbidity value, conductivity value and water temperature value are collected in turn; the function of reporting data to the management platform is refined, and the management platform communication status judgment, data temporary storage and data re-issuance functions are added to it. When the management platform communication is abnormal, the data is temporarily stored. After the management platform communication is restored, the temporarily stored data is re-sent to the platform and the temporarily stored data is deleted.

[0029] Among them, the sleep control process of RTU is as follows Figure 7 As shown. The main program of the RTU's single-chip microcomputer (CPU) automatically enters a dormant state after the task is completed. In this state, the power consumption level of the single-chip microcomputer is significantly reduced. When an interrupt is triggered, if the task needs to be executed in the main program, the interrupt program will wake up the single-chip microcomputer, and the main program will start to execute the task. After the execution is completed, it will automatically enter a dormant state again, and so on. In this way, the overall power consumption of the single-chip microcomputer can be significantly reduced.

[0030] Among them, the communication module is a remote communication module. The process used to upload water quality monitoring data to the water quality monitoring platform is as follows: Figure 8 As shown. The system uses the TeleEasTone communication module to report data to the management platform. By configuring the TeleEasTone communication module, it automatically enters the sleep mode after dialing is completed and the connection with the management platform server is established. In this state, the power consumption level of the TeleEasTone communication module is significantly reduced. When the TeleEasTone communication module needs to actively send a command, or when the TeleEasTone communication module receives a command from the management platform, it automatically exits the sleep mode to perform the communication task. After the task is completed, it automatically enters the sleep mode again, and so on. When the TeleEasTone communication module fails to dial continuously, the dialing frequency will automatically decrease, and the TeleEasTone communication module will also enter the sleep state during the interval. In the above manner, the overall power consumption of the TeleEasTone communication module can be significantly reduced.

[0031] Among them, the control method of the Bluetooth module is as follows Fig. 9 As shown. The Bluetooth module on the device is the Bluetooth server. When the Bluetooth module is connected by a Bluetooth client (such as a mobile phone APP), the Bluetooth module is in the highest power consumption transparent transmission mode. At this time, Bluetooth data communication can be performed until the Bluetooth client actively disconnects or the connection channel fails; when the Bluetooth module is not connected by a Bluetooth client, it will automatically enter the sleep mode, in which the power consumption level of the Bluetooth module is significantly reduced.

[0032] In sleep mode, if you want to establish a Bluetooth connection, the connection speed of the Bluetooth client is slow. Before connecting, you can manually wake up the Bluetooth module through magnet + reed switch to put it into command mode. At this time, the connection speed can be significantly accelerated, thus achieving a balance between low power consumption and performance.

[0033] In command mode, the serial port configuration function of the Bluetooth module is activated, and the power consumption is relatively high. The Bluetooth module is set to automatically enter sleep mode after entering command mode for a period of time.

[0034] Through the above method, the overall power consumption of the Bluetooth communication module can be significantly reduced while ensuring performance. The process of sleep control of the remote communication module is shown in the figure.

[0035] As an improvement, a water-saving and power-saving water quality online monitoring system is provided with a quick-plug water connector 12 on one side of the box 11, and the quick-plug water connector 12 is used to connect the sample injection tube, and the quick-plug water connector 12 is connected to the filter 3 through a hose; a first quick-plug water outlet 13 and a second quick-plug water outlet 14 are provided on the other side of the box 11, and the first quick-plug water outlet 13 and the second quick-plug water outlet 14 are connected to the detection chamber through a three-way joint (not marked in the figure), the throttle valve 8 is connected between the three-way joint and the first quick-plug water outlet 13, and the second solenoid valve 7 is connected between the three-way joint and the second quick-plug water outlet 14.

[0036] In this embodiment, the solenoid valve driving circuits of the first solenoid valve 5 and the second solenoid valve 7 are as follows: Fig.10 As shown, its chip U1 adopts L9110S, and the chip U1 is provided with a first signal access pin IB and a second signal access pin IA for receiving a control signal, the first signal access pin IB is connected to the execution pin IO2 of the RTU, the second signal access pin IA is connected to the execution pin IO3 of the RTU, and is also provided with a first output pin outA and a second output pin outB respectively electrically connected to the two poles of the self-locking solenoid valve, and a capacitor is connected between the first output pin outA and the second output pin outB; When no control signal is received, the first signal access pin IB and the second signal access pin IA are at a low level, the first output pin outA and the second output pin outB have no voltage output, and the self-locking solenoid valve maintains the original state; When receiving the opening signal, the first signal access pin IB is at a high level and the second signal access pin IA is at a low level, the first output pin outA outputs a positive voltage, the second output pin outB outputs a negative voltage, and the self-locking solenoid valve is switched to the opening state; When a closing signal is received, the first signal access pin IB is at a low level and the second signal access pin IA is at a high level, the first output pin outA outputs a negative voltage, the second output pin outB outputs a positive voltage, and the self-locking solenoid valve is switched to a closed state.

[0037] The control method of the first solenoid valve 5 and the second solenoid valve 7 is as follows: when the self-locking solenoid valve is controlled to perform the valve opening action, IO2 inputs a high-level signal to the first signal access pin IB, and IO3 inputs a low-level signal to the second signal access pin IA, the first output pin outA outputs a positive voltage, and the second output pin outB outputs a negative voltage. After 50ms, IO2 and IO3 have no voltage, the first signal access pin IB and the second signal access pin IA return to a low level, the first output pin outA and the second output pin outB have no voltage output, and the self-locking solenoid valve is switched to an open state; or when the self-locking solenoid valve is controlled to perform the valve opening action, IO2 inputs a low-level signal to the first signal access pin IB, and IO3 inputs a high-level signal to the second signal access pin IA, the first output pin outA outputs a negative voltage, and the second output pin outB outputs a positive voltage. After 50ms, IO2 and IO3 have no voltage, the first signal access pin IB and the second signal access pin IA return to a low level, the first output pin outA and the second output pin outB have no voltage output, and the self-locking solenoid valve is switched to a closed state.

[0038] like Figure 2 As shown, during detection, RTU controls the opening of the first solenoid valve 5, and RTU supplies power to the residual chlorine sensor, pH sensor, turbidity sensor and conductivity sensor. The cavity is filled with sample water, which flows slowly in small amounts under the action of the throttle valve 8, and the residual chlorine sensor, pH sensor, turbidity sensor and conductivity sensor detect accurate water quality parameters; during the detection interval, RTU controls the closing of the first solenoid valve 5, so that the water flow completely stops flowing into the detection cavity; during the detection interval, when regular flushing is required, RTU controls the opening of the first solenoid valve 5 and the second solenoid valve 7, and the flushing water is discharged from the throttle valve 8 and the clean bypass to the drain pipe, and is mainly discharged from the clean bypass at a faster flow rate.

[0039] The power supply driving circuit of the water quality analysis module is used to convert the voltage provided by the power supply module into the power supply voltage of the water quality analysis module when the water quality analysis module needs to detect the water quality of the sample water. Fig.11As shown, it includes a switch module A1, a voltage regulating module A2 and an output module A3; the switch module A1 is used to receive a control signal and be turned on according to the control signal; the voltage regulating module A2 is used to receive the voltage provided by the power supply module and provide current to the output module A3 when the switch module A1 is turned on, and the output module A3 is used to output the power supply voltage to the water quality analysis module after obtaining the current. The switch module A1 includes a MOS tube Q1, a sixth resistor R4, a seventh resistor R5, and an eighth resistor R6; the gate of the MOS tube Q1 is used to receive the control signal, the gate of the MOS tube Q1 is connected to the electrode VCC through the eighth resistor R6, the source of the MOS tube Q1 is grounded, the drain of the MOS tube Q1 is connected to the control pin FA / SYNS / SD of the driving chip through the sixth resistor R4, and the drain of the MOS tube Q1 is also connected to the electrode VCC through the seventh resistor R5.

[0040] The voltage regulating module A2 includes a driving chip, which adopts an LM3488 chip. The control pins FA / SYNS / SD of the driving chip are connected to the switch module A1; the driving pin DR of the driving chip is connected to the gate of the field effect tube Q2, multiple sources of the field effect tube Q2 are connected between the first resistor R2 and the second resistor R3, and multiple drains of the field effect tube Q2 are connected to the output module A3 after being connected, the other end of the second resistor R3 is grounded, and the other end of the first resistor R2 is connected to the enable pin ISEN of the driving chip; the enable pin ISEN is grounded through the first capacitor C1; the compensation pin COMP of the driving chip is grounded through the second capacitor C2, and the compensation pin COMP is also grounded through the third resistor R1 and the third capacitor C3 connected in series, the voltage input pin VIN of the driving chip is connected to the pin VBAT of the power module and is connected in parallel with the fourth capacitor C4 and the fifth capacitor C5, the feedback pin FB of the driving chip is also grounded through the fifth resistor R8, and the feedback pin FB of the driving chip is connected to the output module A3 through the fourth resistor R7. The current is stabilized by the first inductor, and the voltage is stabilized by the second inductor.

[0041] In this embodiment, the output module A3 includes a first inductor L1, a sixth capacitor C6, a second inductor L2, a diode D1 and a seventh capacitor C7, one end of the first inductor L1 is connected to the pin VBAT of the power module, the other end of the first inductor L1 is connected to the drain of the field effect transistor Q2, the other end of the first inductor L1 is connected to the water quality analysis module through the sixth capacitor C6 and the diode D1 in sequence, one end of the second inductor L2 is connected between the sixth capacitor C6 and the anode of the diode D1, and the other end of the second inductor L2 is grounded; one end of the seventh capacitor C7 is grounded, and the other end of the seventh capacitor C7 is connected between the cathode of the diode D1 and the water quality analysis module; one end of the fourth resistor R7 is connected between the cathode of the diode D1 and the water quality analysis module. The sixth resistor and the seventh resistor are pull-up resistors, which are used to clamp the control signal at a high level.

[0042] Specifically, when the water quality analysis module does not need power supply, the controller logic program controls the IO port pin to be in a low level state, the MOS tube Q1 is not turned on, and the LM3488 chip enable pin ISEN is in a high level state. At this time, the LM3488 chip is in sleep mode and the water quality analysis module has no power supply; when the water quality analysis module needs power supply, the microcontroller program controls the IO port pin to become a high level state, the MOS tube Q1 is turned on, and the LM3488 chip enable pin ISEN becomes a low level state. At this time, the LM3488 chip works normally to power the water quality analysis module.

[0043] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water-saving and power-saving water quality online monitoring system, comprising a controller, a communication module for uploading water quality monitoring data, and a filter, a pressure reducing valve, a first solenoid valve and a water quality analysis module for detecting multiple water quality parameters connected in sequence to the detection water path, wherein the communication module, the first solenoid valve and the water quality analysis module are electrically connected to the controller respectively, and a throttle valve is provided between the water quality analysis module and the drain pipe; characterized in that: A cleaning bypass is also connected between the water quality analysis module and the drain pipe, and a second solenoid valve is provided on the cleaning bypass, and the second solenoid valve is electrically connected to the controller; The first solenoid valve and the second solenoid valve are normally closed self-locking solenoid valves; The controller is used to open the first solenoid valve when detecting the water sample; The controller is used to open the first solenoid valve and the second solenoid valve simultaneously when cleaning the detection water channel.

2. According to claim 1, a water-saving and power-saving water quality online monitoring system is characterized in that: One side of the box is provided with a quick-plug water connection head for quick connection with the tested pipeline, and the quick-plug water connection head is connected to the filter through a hose; the other side of the box is provided with a first quick-plug water outlet head and a second quick-plug water outlet head for quick connection with the drain pipe, the first quick-plug water outlet head and the second quick-plug water outlet head are connected to the detection chamber through a three-way joint, the throttle valve is connected between the three-way joint and the first quick-plug water outlet head, and the second solenoid valve is connected between the three-way joint and the second quick-plug water outlet head.

3. The water-saving and power-saving water quality online monitoring system according to claim 2 is characterized in that: The solenoid valve driving circuit of the self-locking solenoid valve has a first signal access pin and a second signal access pin for receiving a control signal on its chip, and also has a first output pin and a second output pin respectively electrically connected to the two poles of the self-locking solenoid valve, and a capacitor is connected between the first output pin and the second output pin; When no control signal is received, the first signal access pin and the second signal access pin are at a low level, the first output pin and the second output pin have no voltage output, and the self-locking solenoid valve maintains the original state; When receiving an opening signal, the first signal access pin is at a high level and the second signal access pin is at a low level, the first output pin outputs a positive voltage, the second output pin outputs a negative voltage, and the self-locking solenoid valve is switched to an open state; When a closing signal is received, the first signal access pin is at a low level and the second signal access pin is at a high level, the first output pin outputs a negative voltage, the second output pin outputs a positive voltage, and the self-locking solenoid valve is switched to a closed state.

4. A water-saving and power-saving water quality online monitoring system according to claim 1 or 2, characterized in that: The power supply driving circuit of the water quality analysis module is used to convert the voltage provided by the power supply module into the power supply voltage of the water quality analysis module when the water quality analysis module needs to detect the water quality of the sample water, and includes a switch module, a voltage regulating module and an output module; the switch module is used to receive a control signal and be turned on according to the control signal; the voltage regulating module is used to receive the voltage provided by the power supply module and provide current to the output module when the switch module is turned on, and the output module is used to work after obtaining the current and output the power supply voltage to the water quality sensor; The voltage regulating module includes a driving chip, a control pin of the driving chip is connected to the switch module; a driving pin of the driving chip is connected to the gate of the field effect tube, a plurality of source electrodes of the field effect tube are connected between the first resistor and the second resistor, a plurality of drain electrodes of the field effect tube are connected to the output module, the other end of the second resistor is grounded, and the other end of the first resistor is connected to the enable pin of the driving chip; the enable pin is grounded through a first capacitor; a compensation pin of the driving chip is grounded through a second capacitor, and the compensation pin is also grounded through a third resistor and a third capacitor connected in series, a voltage input pin of the driving chip is connected to the pin VBAT of the power module and is connected in parallel with a fourth capacitor and a fifth capacitor, a feedback pin of the driving chip is connected to the output module through a fourth resistor, and the feedback pin of the driving chip is also grounded through a fifth resistor; The output module includes a first inductor, a sixth capacitor, a second inductor, a diode and a seventh capacitor, one end of the first inductor is connected to the pin VBAT of the power module, the other end of the first inductor is connected to the drain of the field effect tube, the other end of the first inductor is connected to the water quality analysis module through the sixth capacitor and the diode in sequence, one end of the second inductor is connected between the sixth capacitor and the diode, and the other end of the second inductor is grounded; one end of the seventh capacitor is grounded, and the other end of the seventh capacitor is connected between the diode and the water quality analysis module; one end of the fourth resistor is connected between the diode and the water quality analysis module; The switch module includes a MOS tube, a sixth resistor, a seventh resistor and an eighth resistor; the gate of the MOS tube is used to receive the control signal, the gate of the MOS tube is connected to the electrode VCC through the eighth resistor, the source of the MOS tube is grounded, the drain of the MOS tube is connected to the control pin of the driving chip through the sixth resistor, and the drain of the MOS tube is also connected to the electrode VCC through the seventh resistor.

5. A control method for a water-saving and power-saving water quality online monitoring system, characterized in that: The water-saving and power-saving online water quality monitoring system based on any one of claims 1 to 4 specifically comprises the following steps: the water-saving and power-saving online water quality monitoring system triggers a collection and reporting task every time interval N3, the controller controls the opening of the first solenoid valve, waits for the time N1 for the sample water to fill the detection chamber, the controller turns on the power supply drive circuit of the water quality analysis module to enable the water quality analysis module to enter the working state and start detecting various water quality parameters of the sample water, after the waiting time N2, the controller collects the water quality data of the sample water output by the water quality analysis module, the controller processes the water quality data and reports it to the management platform, and at the same time the controller controls the closing of the first solenoid valve, the controller controls the closing of the power supply of the water quality analysis module, and then the water-saving and power-saving online water quality monitoring system enters the intermittent period and sleeps.

6. The control method of a water-saving and power-saving water quality online monitoring system according to claim 5 is characterized in that: The water-saving and power-saving online water quality monitoring system also includes a Bluetooth module, which is electrically connected to the controller; when the Bluetooth module is connected to a Bluetooth client, the Bluetooth module is in a transparent transmission mode with the highest power consumption, and when the Bluetooth module is not connected to a Bluetooth client, it automatically enters a sleep mode.

7. The control method of a water-saving and power-saving water quality online monitoring system according to claim 6 is characterized in that: The Bluetooth module is in sleep mode and enters command mode after being manually awakened by a magnet and a reed switch.

Images