Water and electricity double-control telemetering terminal

Abstract

The utility model provides a water and electricity double-control telemetering terminal. The water and electricity double-control telemetering terminal comprises a meter shell, a temperature compensation module, an anti-theft processing module, a positioning module and a real-time clock are arranged in the meter shell, and the water and electricity double-control telemetering terminal further comprises an electric energy metering module and a remote control module, the controller is configured to calculate a conversion coefficient based on the electricity consumption and the water consumption when the flow meter operates normally, and convert the electricity consumption of the equipment based on the conversion coefficient to obtain the water consumption, so that the working reliability of the system is improved, and theft prevention and water stealing prevention are assisted; the power supply module comprises a lithium battery and a solar panel; the communication module is used for remote communication between the controller and a management center; the data interface is used for carrying out data transmission and communication with external equipment; and the man-machine interface equipment is used for providing an interface for interaction between a user and the equipment. Scientific management and reasonable distribution of water resources can be achieved, the irrigation efficiency is improved, and waste of the water resources is reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of water and electricity management, and particularly relates to a water and electricity double-control telemetry terminal. BACKGROUND

[0002] Water resources play a vital role in human survival, economic development and ecological balance. For example, reasonable water resource management can increase the irrigation water supply of farmland, improve crop yield and ensure food security. A large amount of water resources are needed in industrial production, such as cooling, washing and processing. Reasonable water resource management can ensure the normal operation of industrial production and promote the sustainable development of industrial economy.

[0003] In order to realize reasonable water resource management and avoid waste of water resources, a water resource monitoring device is urgently needed to accurately measure the use of water resources. CONTENT OF THE UTILITY MODEL

[0004] The present disclosure provides a water and electricity double-control telemetry terminal to realize accurate measurement of water resources.

[0005] The present disclosure provides a water and electricity double-control telemetry terminal, which comprises a watch case, wherein a temperature compensation module, an anti-theft processing module, a positioning module and a real-time clock are arranged in the watch case, and further comprising:

[0006] An electric energy metering module is configured to measure the power consumption of the equipment;

[0007] A controller is configured to convert the power consumption of the equipment based on a set conversion factor to obtain the water consumption;

[0008] A power module comprises a lithium battery and a solar panel;

[0009] A communication module is used for remote communication between the controller and the management center;

[0010] A current transformer is used to detect the power current;

[0011] A data interface is used for data transmission and communication with external equipment;

[0012] A human-computer interface device is used to provide an interface for user interaction with the equipment.

[0013] In an exemplary embodiment of the present disclosure, the electric energy metering module further comprises a calibration module, which comprises a reference voltage source, an adjustable load, a voltage detection circuit and a current detection circuit,

[0014] The voltage detection circuit is used for detecting the voltage of the reference voltage source, an output end of the voltage detection circuit is used for accessing a voltage input end of the electric energy metering module, the reference voltage source is used for supplying power for the adjustable load, the current detection circuit is used for detecting the current of the adjustable load, and an output end of the current detection circuit is used for accessing a current input end of the electric energy metering module.

[0015] In an example embodiment of the present disclosure, the adjustable load comprises a first load branch, a second load branch and a third load branch in parallel,

[0016] The first load branch comprises a switch tube Q2, a resistor R1 and an inductor L1, a first end of the switch tube Q2 is a first end of the adjustable load, a second end of the switch tube Q2 connects a first end of the inductor L1 through the resistor R1, and a second end of the inductor L1 is a second end of the adjustable load.

[0017] The second load branch comprises a switch tube Q3, a resistor R2 and an inductor L2, a first end of the switch tube Q3 is a first end of the adjustable load, a second end of the switch tube Q3 connects a first end of the inductor L2 through the resistor R2, and a second end of the inductor L2 is a second end of the adjustable load.

[0018] The third load branch comprises a switch tube Q4 and a capacitor C1, a first end of the switch tube Q4 is a first end of the adjustable load, a second end of the switch tube Q4 is connected with a first end of the capacitor C1, and a second end of the capacitor C1 is a second end of the adjustable load.

[0019] The control ends of the switch tube Q2, the switch tube Q3 and the switch tube Q4 are connected with a plurality of first signal output ends of the controller respectively.

[0020] In an example embodiment of the present disclosure, the current detection circuit comprises a sampling resistor RCA and a subtraction circuit,

[0021] The sampling resistor RCA is connected with the adjustable load in series, a first end of the sampling resistor RCA accesses a first input end of the subtraction circuit, a second end of the sampling resistor RCA accesses a second input end of the subtraction circuit, and an output end of the subtraction circuit is an output end of the current detection circuit.

[0022] In an example embodiment of the present disclosure, a switch tube Q1 is arranged between the reference voltage source and the adjustable load, and a control end of the switch tube Q1 is connected with a second signal output end of the controller.

[0023] In an example embodiment of the present disclosure, the water and electricity dual control remote terminal further comprises:

[0024] a flow detection module configured to detect the water consumption.

[0025] In an example embodiment of the present disclosure, the water and electricity dual control telemetry terminal further comprises a flow detection module and a first control circuit, the flow detection module is configured to detect the water consumption, and the first control circuit comprises a comparator U2A and an AND gate U3,

[0026] a first input end of the comparator U2A is connected with an output end of the flow detection module, a second input end of the comparator U2A is connected with a first reference voltage, an output end of the comparator U2A is connected with a first input end of the AND gate U3, a second signal output end of the controller is connected with a second input end of the AND gate U3, and an output end of the AND gate U3 is an output end of the first control circuit.

[0027] The water and electricity dual control telemetry terminal provided by the example embodiment of the present disclosure has the following working principles and advantages:

[0028] In the example embodiment of the present disclosure, the power consumption of the equipment is first measured by the power metering module, the power consumption signal output by the power metering module is sent to the controller, the controller converts the power consumption based on the pre-set conversion coefficient (i.e. the unit water output corresponding to the unit power consumption of the motor well), and the corresponding water consumption is obtained. The converted water consumption can be directly used as the water consumption of the irrigation system, realizing accurate measurement of the water consumption of the agricultural motor well, reducing the cost of installing the flow detection module (or water meter), and the converted water consumption can also be used as the reference water consumption to evaluate the detection result of the flow detection module, so as to timely find the abnormal situation of the flow detection module, thereby ensuring accurate detection of the water consumption.

[0029] The example embodiment of the present disclosure realizes accurate measurement of the power consumption and the water consumption, which is beneficial to the rational use of water resources. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the example embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the example embodiments or the prior art description. Obviously, the drawings in the following description are only some example embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art without any creative labor.

[0031] Figure 1 is a whole structure schematic diagram of the water and electricity dual control telemetry terminal provided by the example embodiment of the present disclosure;

[0032] Figure 2 is an internal principle block diagram of the water and electricity dual control telemetry terminal provided by the example embodiment of the present disclosure;

[0033] Figure 3is a circuit schematic diagram of the calibration module provided by the embodiment of the present disclosure;

[0034] Figure 4 is a circuit schematic diagram of the first control circuit provided by the embodiment of the present disclosure;

[0035] Figure 5 is a circuit schematic diagram of the electric energy metering module provided by the embodiment of the present disclosure;

[0036] Figure 6 is a circuit schematic diagram of the card swiping module provided by the embodiment of the present disclosure;

[0037] in the figure:

[0038] 1 display screen, 2 card swiping area, 3 control button, 4 external terminal, 5 opening and closing indication lamp. DETAILED DESCRIPTION

[0039] In order to make the person skilled in the art better understand the present scheme, the technical solutions in the embodiments of the present scheme will be clearly described below in conjunction with the drawings in the embodiments of the present scheme. Obviously, the described embodiments are a part of the embodiments of the present scheme, rather than all the embodiments. Based on the embodiments in the present scheme, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present scheme.

[0040] The term "comprising" and other any variants thereof in the specification and claims of the present scheme and the above-mentioned drawings means "including but not limited to", which is intended to cover non-exclusive inclusion, and is not limited to the examples listed in the text. In addition, the terms "first" and "second" and the like are used to distinguish different objects, rather than to describe a specific order.

[0041] The implementation of the present disclosure is described in detail below in conjunction with specific drawings:

[0042] Referring to Figure 1The panel of the water and electricity double control telemetry terminal of the embodiment is provided with a display screen 1, a card swiping area 2, control buttons 3, external terminals 4 and a closing and opening indication lamp 5. The display screen is used to display information such as battery power state, communication signal strength, communication state, IC card number, device instantaneous flow, device cumulative flow and IC card residual water volume. The card swiping area is used for card (IC card) water taking. The control buttons 3 include up, down, return, setting and other buttons and are used for operation control of the device. The external terminals 4 include RS485 communication terminals, analog signal input terminals, solar input terminals, power output terminals and the like. The closing and opening indication lamp 5 is always on when the device is closed and is off when the device is opened. In addition, the panel is also provided with other state indication lamps such as a network lamp and a pulse lamp. The network lamp is used for device network indication, slow flashing for network searching or standby and fast flashing for data transmission. The pulse lamp is used for flashing when the load is running. The greater the load power is, the faster the flashing is.

[0043] Referring to Figure 2 The water and electricity double control telemetry terminal of the embodiment comprises:

[0044] An electric energy metering module configured to meter the power consumption of the device;

[0045] A controller configured to convert the power consumption of the device based on a set conversion coefficient to obtain water consumption;

[0046] A power module comprising a lithium battery and a solar panel;

[0047] A communication module for remote communication between the controller and the management center.

[0048] In the embodiment, the electric energy metering module is first used to meter the power consumption of the device. The power consumption signal output by the electric energy metering module is sent to the controller. The controller converts the power consumption based on a pre-set conversion coefficient to obtain corresponding water consumption. The converted water consumption can be directly used as the water consumption of the irrigation system, reducing the cost of installing a flow detection module (or water meter). The converted water consumption can also be used as a reference water consumption to evaluate the detection result of the flow detection module and timely find abnormal conditions of the flow detection module, thereby ensuring accurate detection of water consumption. The pre-set conversion coefficient can be calculated by statistical historical power consumption data and historical water consumption data. For example, the number of tons of water that can be provided by a water pump, control device and the like of the irrigation system consuming 1 degree of electricity can be calculated as the conversion coefficient.

[0049] In addition, the power module adopts a power supply mode combining a lithium battery and a solar panel, which can reduce power consumption and prolong the service life of the device. The communication module supports multiple communication protocols, which can remotely and real-timely transmit the power consumption data and water consumption data obtained by the controller to the management center, facilitating remote monitoring and management of the management center.

[0050] Through the matched IC card management system, the device can realize the water operation by card swiping.

[0051] With reference to Figure 3 In an example embodiment of the present disclosure, the electric energy metering module further comprises a calibration module, the calibration module comprising a reference voltage source, an adjustable load, a voltage detection circuit and a current detection circuit,

[0052] The voltage detection circuit is used for detecting the voltage of the reference voltage source, the output end of the voltage detection circuit is used for connecting the voltage input end of the electric energy metering module, the reference voltage source is used for supplying power to the adjustable load, the current detection circuit is used for detecting the current of the adjustable load, and the output end of the current detection circuit is used for connecting the current input end of the electric energy metering module.

[0053] In the present embodiment, considering that the measurement accuracy of the electric energy metering module will drift after long-term use, the present embodiment further provides the calibration module to periodically calibrate the electric energy metering module. The reference voltage output by the reference voltage source is added to the adjustable load, and by adjusting the size of the adjustable load, multiple sets of standard voltage and current signals can be simulated. The multiple sets of standard voltage and current signals are connected to the electric energy metering module, and by comparing the difference between the actual electric energy metering result and the standard metering result, the electric energy metering module can be calibrated. The voltage detection circuit is used for detecting the output voltage of the reference voltage source and converting it into a signal recognizable by the electric energy metering module, and the current detection circuit is used for detecting the current of the adjustable load and converting it into a signal recognizable by the electric energy metering module, so as to facilitate accurate metering of the electric energy metering module.

[0054] The present embodiment realizes accurate metering of the electricity consumption and water consumption, which is beneficial to the rational use of water resources.

[0055] With reference to Figure 3 In an example embodiment of the present disclosure, the adjustable load comprises a first load branch, a second load branch and a third load branch connected in parallel,

[0056] The first load branch comprises a switch tube Q2, a resistor R1 and an inductor L1, the first end of the switch tube Q2 is the first end of the adjustable load, the second end of the switch tube Q2 is connected to the first end of the inductor L1 through the resistor R1, and the second end of the inductor L1 is the second end of the adjustable load;

[0057] The second load branch comprises a switch tube Q3, a resistor R2 and an inductor L2, the first end of the switch tube Q3 is the first end of the adjustable load, the second end of the switch tube Q3 is connected to the first end of the inductor L2 through the resistor R2, and the second end of the inductor L2 is the second end of the adjustable load;

[0058] The third load branch includes a switch tube Q4 and a capacitor C1, a first end of the switch tube Q4 is a first end of the adjustable load, a second end of the switch tube Q4 is connected with a first end of the capacitor C1, and a second end of the capacitor C1 is a second end of the adjustable load.

[0059] The control ends of the switch tube Q2, the switch tube Q3 and the switch tube Q4 are connected with a plurality of first signal output ends of the controller.

[0060] In the embodiment, the adjustable load adopts a parallel mode of the first load branch, the second load branch and the third load branch, different resistances, inductances and capacitors are arranged in each load branch, and a switch tube is arranged on each load branch, and different load impedances can be obtained by controlling the conduction of different switch tubes, and then different load currents can be obtained.

[0061] The plurality of different load currents are input to the current input end of the electric energy metering module, and different power factors of the load can be simulated, which is beneficial to improve the universality of the calibration module and improve the calibration accuracy of the electric energy metering module.

[0062] Referring to Figure 3 In an exemplary embodiment of the present disclosure, the current detection circuit includes a sampling resistor RCA and a subtraction circuit,

[0063] The sampling resistor RCA is connected in series with the adjustable load, a first end of the sampling resistor RCA is connected to a first input end of the subtraction circuit, a second end of the sampling resistor RCA is connected to a second input end of the subtraction circuit, and an output end of the subtraction circuit is an output end of the current detection circuit.

[0064] In the embodiment, the resistor R3, the resistor R4, the resistor R5 and the operational amplifier U1A constitute the subtraction circuit, the sampling resistor RCA is connected in series with the adjustable load, and the current of the adjustable load can be obtained by detecting the voltage across the sampling resistor RCA. The two ends of the sampling resistor RCA are connected to the two input ends of the subtraction circuit, respectively, and the output voltage of the subtraction circuit is proportional to the voltage across the sampling resistor RCA, so the current of the adjustable load can be obtained by detecting the output voltage of the subtraction circuit.

[0065] As can be seen from the above, the current detection of the adjustable load is realized by the sampling resistor RCA and the subtraction circuit in the embodiment, and the circuit structure is simple and the cost is low.

[0066] Referring to Figure 3 In an exemplary embodiment of the present disclosure, a switch tube Q1 is arranged between the reference voltage source and the adjustable load, and a control end of the switch tube Q1 is connected with a second signal output end of the controller.

[0067] In the embodiment, the switch tube Q1 is arranged between the reference voltage source and the adjustable load. When calibration of the electric energy metering module is needed, the controller can output a high-level control signal to the control end of the switch tube Q1, so that the output voltage of the reference voltage source is applied to the adjustable load, and the function of the calibration module is realized.

[0068] From the above, it can be concluded that the calibration time of the electric energy metering module can be flexibly controlled by arranging the switch tube Q1.

[0069] In an exemplary embodiment of the present disclosure, the water and electricity dual control telemetry terminal further comprises:

[0070] The flow detection module is configured to detect the water consumption.

[0071] In the embodiment, for the irrigation system with the flow detection module conveniently arranged, the flow detection module can also be arranged to detect the water consumption. The detection result of the flow detection module can be compared with the water consumption obtained by converting the electricity consumption. When the error between the two is large, it indicates that the flow detection module or the electricity metering module may have a fault, and the staff can be reminded to timely repair, so as to ensure the accuracy of the water consumption and the electricity consumption.

[0072] In addition, when the natural water bodies such as rivers, lakes and reservoirs are managed, the key parameters such as water level and flow can also be monitored, so as to provide real-time and accurate data support for water resource management.

[0073] Reference Figure 4 In an exemplary embodiment of the present disclosure, the water and electricity dual control telemetry terminal further comprises a flow detection module and a first control circuit. The flow detection module is configured to detect the water consumption. The first control circuit comprises a comparator U2A and an AND gate U3.

[0074] The first input end of the comparator U2A is connected with the output end of the flow detection module. The second input end of the comparator U2A is connected with the first reference voltage. The output end of the comparator U2A is connected with the first input end of the AND gate U3. The second signal output end of the controller is connected with the second input end of the AND gate U3. The output end of the AND gate U3 is the output end of the first control circuit.

[0075] In the embodiment, the flow detection module can be implemented by a flow sensor. The output signal of the flow sensor is converted to a set voltage level by an amplification circuit, and then is connected to the first input terminal of the comparator U2A. When there is no water demand, the output of the flow detection module is zero, the output voltage of the amplification circuit is less than the first reference voltage, the comparator U2A outputs a high-level signal, and the output signal of the comparator U2A is connected to the first input terminal of the AND gate U3. In this case, if the controller outputs a high-level signal to the second input terminal of the AND gate U3, the AND gate U3 outputs a high-level signal to the control terminal of the switch tube Q1, the switch tube Q1 is turned on, the reference voltage source is connected to the adjustable load, and the voltage detection circuit and the current detection circuit output the reference voltage signal and the reference current signal to the electric energy metering module, so that the calibration of the electric energy metering module is started.

[0076] When there is water demand, the output of the flow detection module is greater than zero, the output voltage of the amplification circuit is greater than the first reference voltage, the comparator U2A outputs a low-level signal, and the output signal of the comparator U2A is connected to the first input terminal of the AND gate U3. In this case, even if the controller outputs a high-level signal to the second input terminal of the AND gate U3, the AND gate U3 still outputs a low level, the switch tube Q1 is cut off, and the calibration of the electric energy metering module cannot be performed.

[0077] It should be noted that a switching switch is arranged between the voltage detection circuit and the electric energy metering module and between the current detection circuit and the electric energy metering module. When the calibration of the electric energy metering module is needed, the controller can control the switching switch to disconnect the electric energy metering module from the power circuit, and connect the electric energy metering module to the output terminals of the voltage detection circuit and the current detection circuit, so as to realize the calibration of the electric energy metering module.

[0078] From the above, it can be concluded that the calibration of the electric energy metering module is performed when the output of the flow detection module is zero, that is, when there is no water demand, so that the calibration of the electric energy metering module does not affect the normal power consumption metering.

[0079] Referring to Figure 5 In an exemplary embodiment of the present disclosure, the electric energy metering module specifically adopts an electric energy metering chip RN8302.

[0080] In the embodiment, the electric energy metering module adopts an RN8302B electric energy metering chip. The chip is a multifunctional anti-stealing three-phase alternating current and direct current chip, and can fine-tune the parameters of the internal registers of the chip, so as to achieve high metering accuracy.

[0081] Referring to Figure 6 In an exemplary embodiment of the present disclosure, the water and electricity dual-control remote terminal further comprises:

[0082] The card swiping module is used for taking water by swiping a card.

[0083] In the present embodiment, the card swiping module specifically adopts the MFRC522 card reading chip, and can realize functions such as card swiping reading instruction, writing instruction, etc., realizes card swiping water taking, card swiping pump opening and closing, card number reading, corresponding user, and reports the center issued water indication through the GPRS part in the RTU, meets the operation of the customer water taking, remote pump opening and closing.

[0084] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A hydroelectric dual-control telemetry terminal, characterized in that, The watch case is internally provided with: An electric energy metering module configured to meter the electricity consumption of the device; the electric energy metering module specifically adopts an electric energy metering chip RN8302; A controller configured to convert the electricity consumption of the device based on a set conversion coefficient to obtain the water consumption; A power module, the power module includes a lithium battery and a solar panel; A communication module for remote communication between the controller and the management center; The electric energy metering module further includes a calibration module, the calibration module includes a reference voltage source, an adjustable load, a voltage detection circuit and a current detection circuit, The voltage detection circuit is used to detect the voltage of the reference voltage source, the output end of the voltage detection circuit is used to access the voltage input end of the electric energy metering module, the reference voltage source is used to power the adjustable load, and the current detection circuit is used to detect the current of the adjustable load. The output end of the current detection circuit is used to access the current input end of the electric energy metering module; The adjustable load includes a first load branch, a second load branch and a third load branch in parallel, The first load branch includes a switch tube Q2, a resistor R1 and an inductor L1, the first end of the switch tube Q2 is the first end of the adjustable load, the second end of the switch tube Q2 is connected to the first end of the inductor L1 through the resistor R1, and the second end of the inductor L1 is the second end of the adjustable load; The second load branch includes a switch tube Q3, a resistor R2 and an inductor L2, the first end of the switch tube Q3 is the first end of the adjustable load, the second end of the switch tube Q3 is connected to the first end of the inductor L2 through the resistor R2, and the second end of the inductor L2 is the second end of the adjustable load; The third load branch includes a switch tube Q4 and a capacitor C1, the first end of the switch tube Q4 is the first end of the adjustable load, the second end of the switch tube Q4 is connected to the first end of the capacitor C1, and the second end of the capacitor C1 is the second end of the adjustable load; The control ends of the switch tube Q2, the switch tube Q3 and the switch tube Q4 are connected to a plurality of first signal output ends of the controller.

2. The hydroelectric dual-control telemetry terminal of claim 1, wherein, The current detection circuit includes a sampling resistor RCA and a subtraction circuit, The sampling resistor RCA is connected in series with the adjustable load, the first end of the sampling resistor RCA is connected to the first input end of the subtraction circuit, the second end of the sampling resistor RCA is connected to the second input end of the subtraction circuit, and the output end of the subtraction circuit is the output end of the current detection circuit.

3. The hydroelectric dual-control telemetry terminal of claim 1, wherein, A switch tube Q1 is arranged between the reference voltage source and the adjustable load, and the control end of the switch tube Q1 is connected to a second signal output end of the controller.

4. The hydroelectric dual-control telemetry terminal of claim 1, wherein, Further comprising: A flow detection module configured to detect the water consumption.

5. The hydroelectric dual-control telemetry terminal of claim 3, wherein, Further comprising a flow detection module and a first control circuit, the flow detection module is configured to detect the water consumption, and the first control circuit includes a comparator U2A and an AND gate U3, The first input end of the comparator U2A is connected with the output end of the flow detection module, the second input end of the comparator U2A is connected with the first reference voltage, the output end of the comparator U2A is connected with the first input end of the AND gate U3, the second signal output end of the controller is connected with the second input end of the AND gate U3, and the output end of the AND gate U3 is the output end of the first control circuit.

6. The hydroelectric dual-control telemetry terminal of claim 1, wherein, Further comprising: A card swiping module for swiping a card to take water.

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