Water pump internet-of-things connector and internet-of-things control method

Abstract

The invention relates to the technical field of water pump control, in particular to a water pump internet-of-things connector and an internet-of-things control method.The water pump internet-of-things connector is characterized by comprising a networking module, a single-chip microcomputer, a sampling circuit, a line buffer, a voltage stabilizer and an interface, the networking module is connected with the single-chip microcomputer, and a sampling pin of the single-chip microcomputer is connected with a communication pin of the interface through the sampling circuit; a communication pin of the single-chip microcomputer is connected with a communication pin of the interface through a line buffer, and a power pin on the interface is provided for the networking module, the single-chip microcomputer, the sampling circuit and the line buffer through a voltage stabilizer. According to the invention, the water pump Internet-of-Things communication can be realized through the design, the data transmission convenience and reliability of the water pump are improved, a corresponding control method is adopted, the situation that a plurality of remote terminals and local control are conflicted by ten millions is avoided, and the beneficial effect of reliable work is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of water pump control, and particularly relates to a water pump IoT joint and an IoT control method. Background Art

[0002] The IoT access methods of water pump equipment present a complex pattern with multiple technologies coexisting. The current mainstream wireless communication technologies include Wi-Fi, 4G / 5G cellular networks, NB-IoT narrowband IoT, LoRa spread spectrum communication, and near-field protocols such as Bluetooth. Each technical solution exhibits differentiated characteristics in dimensions such as data transmission characteristics, power consumption management, and network coverage.

[0003] Analyzed from the dimension of communication protocols, Wi-Fi technology can achieve a transmission rate of up to several hundred Mbps with 2.4GHz / 5GHz dual bands, but it has weak penetration and high power consumption, and is typically applied to data transparent transmission scenarios inside pump stations; 4G LTE network has the advantage of wide-area coverage, and the theoretical downlink rate reaches 150Mbps, but the module cost and traffic charges constitute the main obstacles to large-scale deployment; 5G network can achieve Gbps-level ultra-high-speed transmission through millimeter wave bands, and its network slicing technology provides deterministic delay guarantee for remote control of water pumps, but the base station construction density and terminal power consumption still need to be optimized; NB-IoT, as a low-power wide-area network designed specifically for the IoT, achieves a transmission rate of 200kbps in a 180kHz bandwidth, and is particularly suitable for low-frequency status monitoring such as water level and pressure; LoRa technology obtains a communication distance of more than 10km in the Sub-GHz band through spread spectrum modulation, and its self-organizing network characteristics have unique advantages in group control of water pumps in remote areas; after the Bluetooth 5.0 protocol introduces the Mesh networking function, it can build a near-field self-organizing network among water pump devices, which is suitable for pump group collaborative control scenarios.

[0004] Since the total traffic of different IoT methods is different, it is necessary to determine the frequency of remote interaction according to different methods. There are many electric control interference signals in water pumps, and the IoT modules have relatively poor tolerance. In actual applications, it is inevitable to replace them while powered on. Therefore, it is also necessary to consider the blocking control of the interface. Conflicts are inevitable among multiple remote terminals and local control.

[0005] Chinese Patent with application number 201810924983.6 discloses a device control method and device based on an interface, but does not solve the above problems and there is no inspiration for technical solutions. Therefore, it is necessary to seek a new solution. Summary of the Invention

[0006] To solve the technical problems and disadvantages in the prior art, the present invention provides a water pump IoT connector and an IoT control method, which can overcome the technical problem of low reliability in interface docking during the IoT process of water pumps, can be adapted according to different IoT methods, overcome the problem of low tolerance of IoT modules, and achieve the effects of high safety and stability in interface docking and stable operation.

[0007] To achieve the above and other related purposes, the present invention adopts the following technical solutions:

[0008] A water pump IoT connector includes a networking module, a single-chip microcomputer, a sampling circuit, a line buffer, a voltage regulator, and an interface. The networking module is connected to the single-chip microcomputer. The sampling pin of the single-chip microcomputer is connected to the communication pin of the interface through the sampling circuit. The communication pin of the single-chip microcomputer is connected to the communication pin of the interface through the line buffer. The power pin on the interface provides power to the networking module, the single-chip microcomputer, the sampling circuit, and the line buffer through the voltage regulator.

[0009] Preferably, the interface has five pins. The line buffer uses a chip IC2 of model 74AHC367. The seventh pin of the chip IC2 is connected to the first pin of the interface. The ninth pin of the chip IC2 is connected to the second pin of the interface. The twelfth pin of the chip IC2 is connected to the third pin of the interface. The single-chip microcomputer is communicatively connected to the chip IC2. The enable pin of the single-chip microcomputer is connected to the first pin of the chip IC2.

[0010] Preferably, one end of the voltage regulator is connected to the fourth pin of the interface for accessing the voltage source VDD. The grounding end of the voltage regulator is connected to the fifth pin of the interface. The output end of the voltage regulator is used to generate the voltage source VCC and is connected to the fifteenth pin of the chip IC2 and the enable pin of the single-chip microcomputer through the resistor R7.

[0011] Preferably, the sampling circuit includes resistors R1, R2, R3, R4, R5, R6, diodes D1, D2, and D4. The voltage source VCC is connected to the cathodes of diodes D1, D2, and D3;

[0012] The anode of diode D1 is connected to one end of resistor R1, one end of resistor R2, and the ADC1 pin of the single-chip microcomputer. The other end of resistor R2 is connected to the third pin of the interface;

[0013] The anode of diode D2 is connected to one end of resistor R3, one end of resistor R4, and the ADC2 pin of the single-chip microcomputer. The other end of resistor R4 is connected to the second pin of the interface;

[0014] The anode of diode D3 is connected to one end of resistor R5, one end of resistor R6, and the ADC3 pin of the single-chip microcomputer. The other end of resistor R6 is connected to the first pin of the interface;

[0015] The other ends of resistor R1, resistor R3, and resistor R5 are grounded.

[0016] Another provided is a water pump IoT control method, which uses the above-mentioned water pump IoT interface as hardware and includes the following steps:

[0017] Step 1: The enable pin of the single-chip microcomputer outputs a high-level signal.

[0018] Step 2: The ADC1, ADC2, and ADC3 sampling pins of the single-chip microcomputer acquire three-way sampling signals.

[0019] Step 3: The single-chip microcomputer determines whether the three-way sampling signals acquired are normal. If not, it closes the interface communication connection and returns to Step 1. If normal, it controls the enable pin to output a low-level signal, and the single-chip microcomputer performs normal communication processing.

[0020] Step 4: Determine whether the communication processing is idle. If so, return to Step 2. Otherwise, process other processes.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. After the interface is connected to the water pump controller in the present invention, IoT networking is performed with peripheral components, enabling the water pump controller to effectively achieve networking communication. At this time, the networking module is powered on, and the enable pin of the single-chip microcomputer will output a high level, locking the chip IC2. Only after signal sampling is performed through the sampling circuit and the signal is determined to be normal, the enable pin outputs a low level to achieve effective interface communication.

[0023] 2. During the idle time of communication in the present invention, the single-chip microcomputer on the module detects the interface level. If the level is abnormal, the port is closed to achieve a reliable circuit protection function to prevent damage and faults of the circuit module.

[0024] 3. The level conversion is achieved through the chip IC2. The level of the water pump controller is usually different from the interface level of the IoT module, and the circuit is adjusted accordingly. At the same time, the single-chip microcomputer realizes the priority judgment processing for the communication process, improving the working reliability.

[0025] Other additional advantages and beneficial effects of this application will be partially given in the following description, partially will become obvious from the following description, or will be learned through the practice of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention.

[0027] In the drawings:

[0028] Figure 1 is the overall schematic diagram of the circuit principle of the embodiments of the present application;

[0029] Figure 2 is the flowchart of the IoT control method implemented by the single-chip microcomputer.

[0030] Description of the reference numerals of the main components:

[0031] 100, sampling circuit; 200, single-chip microcomputer; 300, networking module; 400, buffer; 500, interface. Specific embodiments

[0032] The following further describes the specific embodiments of the present invention in conjunction with the drawings. The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0033] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The drawings only show the components related to the present invention rather than being drawn according to the number, shape and size of the components in actual implementation. The type, quantity and ratio of each component in actual implementation can be changed arbitrarily, and the component layout type may also be more complex.

[0034] It should be noted that in the description of the present application, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, it should be noted that in the description of the present application, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] Embodiment 1:

[0036] An embodiment of the present invention discloses a water pump Internet of Things connector, refer to Figure 1 As shown, it includes an Internet of Things module 300, a single-chip microcomputer 200, a sampling circuit 100, a line buffer 400, a voltage regulator, and an interface 500. The Internet of Things module 300 can also be marked as U1 in the circuit schematic diagram, the single-chip microcomputer 200 can be marked as IC1, the line buffer 400 is marked as IC2, the voltage regulator is marked as IC3, and the interface 500 is marked as CN1. The interface 500 is a pluggable ribbon socket or ribbon plug (connector). The interface 500 is a five-wire system.

[0037] For the Internet of Things module 300, it can be various types of Internet of Things modules, such as WIFI modules, 4G modules, etc. The line buffer 400 (IC2) is a protection chip for the interface 500, and chips such as 74AHC367, 74AHC244, and 74AHC245 can be used. This chip is a CMOS level chip, and the input end can still accept 5V level when the power supply is lower than 5V. Therefore, it can be used to implement the level conversion of the interface 500 and the locking control of the interface 500.

[0038] The Internet of Things module 300 is connected to the single-chip microcomputer 200. The sampling pin of the single-chip microcomputer 200 is connected to the communication pin of the interface 500 through the sampling circuit 100. The communication pin of the single-chip microcomputer 200 is connected to the communication pin of the interface 500 through the line buffer 400. The power pin on the interface 500 supplies power to the Internet of Things module 300, the single-chip microcomputer 200, the sampling circuit 100, and the line buffer 400 through the voltage regulator.

[0039] Preferably, the interface 500 has five pins. The line buffer 400 uses a chip IC2 of model 74AHC367. The seventh pin of the chip IC2 is connected to the first pin of the interface 500. The ninth pin of the chip IC2 is connected to the second pin of the interface 500. The twelfth pin of the chip IC2 is connected to the third pin of the interface 500. The single-chip microcomputer 200 is communicatively connected to the chip IC2. The enable pin of the single-chip microcomputer 200 is connected to the first pin of the chip IC2. The level conversion is realized through the chip IC2. The level of the water pump controller is usually different from the level of the interface 500 of the Internet of Things module, and thus the circuit is adjusted.

[0040] Preferably, one end of the voltage regulator is connected to the fourth pin of the interface 500 for accessing the voltage source VDD. The grounding end of the voltage regulator is connected to the fifth pin of the interface 500. The output end of the voltage regulator is used to generate the voltage source VCC and is connected to the fifteenth pin of the chip IC2 and the enable pin of the single-chip microcomputer 200 through the resistor R7.

[0041] Preferably, the sampling circuit 100 includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a diode D1, a diode D2, and a diode D4. The voltage source VCC is connected to the cathodes of the diode D1, the diode D2, and the diode D3. The anode of the diode D1 is connected to one end of the resistor R1, one end of the resistor R2, and the ADC1 pin of the microcontroller 200. The other end of the resistor R2 is connected to the third pin of the interface 500. The anode of the diode D2 is connected to one end of the resistor R3, one end of the resistor R4, and the ADC2 pin of the microcontroller 200. The other end of the resistor R4 is connected to the second pin of the interface 500. The anode of the diode D3 is connected to one end of the resistor R5, one end of the resistor R6, and the ADC3 pin of the microcontroller 200. The other ends of the resistor R1, the resistor R3, and the resistor R5 are grounded.

[0042] In the sampling circuit 100, three groups of resistors, namely R1 and R2, R3 and R4, and R5 and R6, divide the signal of the interface 500 to ensure that the level signal does not exceed VCC. At the same time, the clamping connection is made to VCC through a diode to ensure that the input to the pin of the chip with the sampling signal does not exceed the range allowed by the microcontroller 200.

[0043] After the entire circuit is powered on, the EN pin of the microcontroller 200 outputs a high level, causing the output of the chip IC2 of the model 74AHC367 to be locked. First, the three signals FLAG, TXD, and RXD of the ADC detection and the interface 500 of the microcontroller 200 are completed. These three ports are sent to the three ADC interfaces 500 (pins) of the microcontroller 200 through resistor voltage division. The microcontroller 200 detects whether the three levels are within the normal range through the ADC. If they are within the normal range, the EN outputs a low level and the output of the chip IC2 is valid. At this time, the module can communicate with the water pump controller.

[0044] In an actual application example: This circuit is powered by 3.3V to 4V, and the external power supply generates the module power supply voltage VCC through IC3 (a voltage regulator chip). The high level of the module interface 500 is also VCC. Usually, the level of the water pump controller interface 500 is 3.3V or 5V. When the microcontroller 200 on the module detects that the level is within the normal range, the communication port can be opened. If the level is abnormal, it will not be opened.

[0045] During the idle time of communication, the microcontroller 200 on this IoT interface 500 device detects the level of the interface 500. If the level is abnormal, the port is closed to protect this device from damage.

[0046] After the interface 500 of the present invention is connected to the water pump controller, the peripheral components are used for Internet of Things networking, so that the water pump controller can effectively realize networking communication. At this time, the networking module 300 is powered on, and the enable pin of the single-chip microcomputer 200 will output a high level, so that the chip IC2 is locked. Only after the signal is sampled by the sampling circuit 100 and the signal is judged to be normal, the enable pin outputs a low level to realize effective communication of the interface 500.

[0047] Embodiment 2:

[0048] Based on the hardware design of the above-mentioned Embodiment 1, a water pump Internet of Things control method is provided. The above-mentioned water pump Internet of Things interface 500 is used as the hardware, combined with Figure 2 Understand, including the following steps:

[0049] Step 1, the enable pin of the single-chip microcomputer 200 outputs a high-level signal;

[0050] Step 2, the ADC1, ADC2, and ADC3 sampling pins of the single-chip microcomputer 200 obtain three-way sampling signals;

[0051] Step 3, the single-chip microcomputer 200 judges whether the three-way sampling signals obtained are normal. If not, the communication connection of the interface 500 is closed, and it returns to Step 1. If normal, the control enable pin outputs a low-level signal, and the single-chip microcomputer 200 performs normal communication processing;

[0052] Step 4, judge whether the communication processing is idle. If so, return to Step 2, otherwise process other processes.

[0053] In the present invention, during the idle time of communication, the single-chip microcomputer 200 on the module detects the level of the interface 500. If the level is abnormal, the port is closed to achieve a reliable circuit protection effect to avoid damage and failure of the circuit module. This solution realizes the priority judgment processing of the single-chip microcomputer 200 for the communication process and improves the working reliability.

[0054] So far, the technical solution of the present invention has been described in combination with the preferred embodiments shown in the drawings. The above are only the preferred embodiments of the present invention and are not used to limit the present invention; for those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A water pump IoT connector, comprising a networking module (300), a single-chip microcomputer (200), a sampling circuit (100), a line buffer (400), a voltage regulator, and an interface (500), characterized in that, The networking module (300) is connected to the single-chip microcomputer (200). The sampling pin of the single-chip microcomputer (200) is connected to the communication pin of the interface (500) through the sampling circuit (100). The communication pin of the single-chip microcomputer (200) is connected to the communication pin of the interface (500) through the line buffer (400). The power pin on the interface (500) is supplied to the networking module (300), the single-chip microcomputer (200), the sampling circuit (100), and the line buffer (400) through a voltage regulator.

2. The water pump IoT joint according to claim 1, characterized in that, The interface (500) has five pins. The line buffer (400) uses a chip IC2 of model 74AHC367. The seventh pin of the chip IC2 is connected to the first pin of the interface (500). The ninth pin of the chip IC2 is connected to the second pin of the interface (500). The twelfth pin of the chip IC2 is connected to the third pin of the interface (500). The single-chip microcomputer (200) is communicatively connected to the chip IC2. The enable pin of the single-chip microcomputer (200) is connected to the first pin of the chip IC2.

3. The water pump IoT joint according to claim 1, wherein, One end of the voltage regulator is connected to the fourth pin of the interface (500) for accessing the voltage source VDD. The ground end of the voltage regulator is connected to the fifth pin of the interface (500). The output end of the voltage regulator is used to generate the voltage source VCC and is connected to the fifteenth pin of the chip IC2 and the enable pin of the single-chip microcomputer (200) through the resistor R7.

4. The water pump IoT joint according to claim 1, characterized in that, The sampling circuit (100) includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a diode D1, a diode D2, and a diode D4. The voltage source VCC is connected to the cathodes of the diode D1, the diode D2, and the diode D3; The anode of the diode D1 is connected to one end of the resistor R1, one end of the resistor R2, and the ADC1 pin of the single-chip microcomputer (200). The other end of the resistor R2 is connected to the third pin of the interface (500); The anode of the diode D2 is connected to one end of the resistor R3, one end of the resistor R4, and the ADC2 pin of the single-chip microcomputer (200). The other end of the resistor R4 is connected to the second pin of the interface (500); The anode of the diode D3 is connected to one end of the resistor R5, one end of the resistor R6, and the ADC3 pin of the single-chip microcomputer (200). The other end of the resistor R6 is connected to the first pin of the interface (500); The other ends of the resistor R, the resistor R3, and the resistor R5 are grounded.

5. A method for Internet of Things control of a water pump, using the water pump Internet of Things interface (500) described in any one of claims 1-4 as hardware, characterized in that, It includes the following steps: Step 1: The enable pin of the single-chip microcomputer (200) outputs a high-level signal; Step 2: The ADC1, ADC2, and ADC3 sampling pins of the single-chip microcomputer (200) acquire three-way sampling signals; Step 3: The single-chip microcomputer (200) determines whether the three-way sampling signals acquired are normal. If not, it closes the communication connection of the interface (500) and returns to Step 1. If normal, it controls the enable pin to output a low-level signal, and the single-chip microcomputer (200) performs normal communication processing; Step 4: Determine whether the communication processing is idle. If so, return to Step 2. Otherwise, process other processes.

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