Water pump coupling

Abstract

The application relates to the technical field of water pump control, in particular to a water pump material joint, and the technical scheme points comprise 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; sampling pins of the single-chip microcomputer are connected with communication pins of the interface through the sampling circuit; communication pins of the single-chip microcomputer are connected with the communication pins of the interface through the line buffer; power supply pins on the interface are provided for the networking module, the single-chip microcomputer, the sampling circuit and the line buffer through the voltage stabilizer. The water pump material joint can realize water pump material joint communication by being connected with the water pump, improves the data transmission convenience and reliability of the water pump, and achieves the beneficial effect of reliable work.

Description

Technical Field

[0001] This invention relates to the technical field of water pump control, and specifically to a water pump connector. Background Technology

[0002] The IoT access methods for water pump equipment present a complex landscape with multiple technologies coexisting. 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 technology solution exhibits different characteristics in terms of data transmission characteristics, power management, and network coverage.

[0003] From the perspective of communication protocols, Wi-Fi technology, with its dual-band 2.4GHz / 5GHz, can achieve transmission rates of up to several hundred Mbps, but its penetration is weak and its power consumption is high, typically used in data transmission scenarios inside pumping stations. 4G LTE networks have the advantage of wide-area coverage, with a theoretical downlink speed of 150Mbps, but module cost and data tariffs are the main obstacles to large-scale deployment. 5G networks can achieve Gbps-level ultra-high-speed transmission through millimeter-wave bands, and its network slicing technology provides deterministic latency guarantees for remote control of pumps, but base station density and terminal power consumption still need to be optimized. NB-IoT, as a low-power wide-area network designed specifically for the Internet of Things, achieves a transmission rate of 200kbps at a bandwidth of 180kHz, making it particularly suitable for low-frequency status monitoring such as water level and pressure. LoRa technology achieves a communication distance of 10km+ in the Sub-GHz band through spread spectrum modulation, and its self-organizing network characteristics have unique advantages in the group control of pumps in remote areas. After the introduction of Mesh networking functionality in the Bluetooth 5.0 protocol, a near-field self-organizing network between pump devices can be built, suitable for pump group collaborative control scenarios.

[0004] Because different IoT methods result in varying total flow rates, the frequency of remote interaction needs to be determined based on each method. Water pump electrical control systems experience numerous interference signals, and IoT modules have relatively poor tolerance; in practical applications, live replacement is sometimes unavoidable, thus requiring consideration of interface blocking control. Conflicts are inevitable between multiple remote terminals and local control systems.

[0005] Chinese patent application number 201810924983.6 discloses an interface-based device control method and apparatus, but it does not solve the above-mentioned problems and does not provide any inspiration for technical solutions. Therefore, it is necessary to seek new solutions. Summary of the Invention

[0006] To address the technical problems and shortcomings of existing technologies, this invention provides a water pump IoT connector that overcomes the technical problem of low interface reliability in the water pump IoT process. It can adapt to different IoT methods, overcome the problem of low tolerance of IoT modules, and achieves high interface security and stable operation.

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

[0008] A water pump IoT connector includes a network module, a microcontroller, a sampling circuit, a line buffer, a voltage regulator, and an interface. The network module is connected to the microcontroller. The sampling pin of the microcontroller is connected to the communication pin of the interface through the sampling circuit. The communication pin of the microcontroller is connected to the communication pin of the interface through the line buffer. The power supply pin of the interface is supplied to the network module, the microcontroller, the sampling circuit, and the line buffer through the voltage regulator.

[0009] Preferably, the interface has five pins, the line buffer uses a 74AHC367 chip IC2, 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 microcontroller is connected to the chip IC2 for communication, and the enable pin of the microcontroller 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 the access of the voltage source VDD, the ground end of the voltage regulator is connected to the fifth pin of the interface, and 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 microcontroller through the resistor R7.

[0011] Preferably, the sampling circuit includes resistors R1, R2, R3, R4, R5, and R6, diodes D1, D2, and D4, and a 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 microcontroller. 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 microcontroller. 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 microcontroller. The other end of resistor R6 is connected to the first pin of the interface.

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

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This invention connects the interface to the water pump controller and then uses peripheral components to form an Internet of Things network, enabling the water pump controller to effectively achieve network communication. When the network module is powered on, the microcontroller's enable pin will output a high level, which will lock the chip IC2. Only after the signal is sampled by the sampling circuit and the signal is determined to be normal will the enable pin output a low level to achieve effective interface communication.

[0018] 2. In this invention, during the idle time of communication, the microcontroller on the module detects the interface level. If the level is abnormal, the port is closed to achieve reliable circuit protection and prevent damage and failure of the circuit module.

[0019] 3. Level conversion is achieved through chip IC2. The level of the water pump controller is usually different from the interface level of the IoT module, and this circuit is used to adjust it, thereby improving operational reliability.

[0020] Other additional advantages and benefits of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0022] In the attached diagram:

[0023] Figure 1 This is a schematic diagram of the overall circuit principle of an embodiment of this application;

[0024] Figure 2 This is a flowchart of IoT control implemented by a microcontroller.

[0025] Explanation of reference numerals for major components:

[0026] 100. Sampling circuit; 200. Microcontroller; 300. Networking module; 400. Buffer; 500. Interface. Detailed Implementation

[0027] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. The following specific examples illustrate the embodiments of the present invention, and those skilled in the art can easily understand 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 the 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, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0028] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be changed at will, and the layout of the components may also be more complex.

[0029] It should be noted that in the description of this application, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention. Furthermore, it should be noted that in the description of this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in the invention based on the specific circumstances.

[0030] Example:

[0031] This invention discloses a water pump coupling according to an embodiment, with reference to... Figure 1 As shown, the system includes a networking module 300, a microcontroller 200, a sampling circuit 100, a line buffer 400, a voltage regulator, and an interface 500. In the circuit schematic, the networking module 300 can also be labeled U1, the microcontroller 200 can be labeled IC1, the line buffer 400 can be labeled IC2, the voltage regulator can be labeled IC3, and the interface 500 can be labeled CN1. Interface 500 is a plug-in ribbon cable socket or connector. Interface 500 uses a five-wire system.

[0032] The networking module 300 can be any type of IoT module, such as a Wi-Fi module or a 4G module. The line buffer 400 (IC2) is the interface 500 protection chip, which can be a 74AHC367, 74AHC244, 74AHC245, or similar chip. This chip is a CMOS level chip, and its input can still accept a 5V level when the power supply is below 5V. Therefore, it can be used to implement interface 500 level conversion and interface 500 latch-up control.

[0033] The networking module 300 is connected to the microcontroller 200. The sampling pin of the microcontroller 200 is connected to the communication pin of the interface 500 through the sampling circuit 100. The communication pin of the microcontroller 200 is connected to the communication pin of the interface 500 through the line buffer 400. The power supply pin on the interface 500 is supplied to the networking module 300, the microcontroller 200, the sampling circuit 100, and the line buffer 400 through a voltage regulator.

[0034] Preferably, interface 500 has five pins. The line buffer 400 uses a 74AHC367 chip IC2. Pin 7 of chip IC2 is connected to pin 1 of interface 500, pin 9 of chip IC2 is connected to pin 2 of interface 500, and pin 12 of chip IC2 is connected to pin 3 of interface 500. Microcontroller 200 communicates with chip IC2, and the enable pin of microcontroller 200 is connected to pin 1 of chip IC2. Level conversion is achieved through chip IC2. The level of the water pump controller is usually different from the level of interface 500 of the IoT module, and this circuit is used for adjustment.

[0035] Preferably, one end of the voltage regulator is connected to the fourth pin of interface 500 for accessing the voltage source VDD, the ground end of the voltage regulator is connected to the fifth pin of interface 500, and the output end of the voltage regulator is used to generate the voltage source VCC and is connected to the fifteenth pin of chip IC2 and the enable pin of microcontroller 200 through resistor R7.

[0036] Preferably, the sampling circuit 100 includes resistors R1, R2, R3, R4, R5, and R6, diodes D1, D2, and D4. A voltage source VCC is connected to the cathodes of diodes D1, D2, and D3. The anode of diode D1 is connected to one end of resistor R1, one end of resistor R2, and the ADC1 pin of the microcontroller 200; the other end of resistor R2 is connected to the third pin of interface 500. The anode of diode D2 is connected to one end of resistor R3, one end of resistor R4, and the ADC2 pin of the microcontroller 200; the other end of resistor R4 is connected to the second pin of interface 500. The anode of diode D3 is connected to one end of resistor R5, one end of resistor R6, and the ADC3 pin of the microcontroller 200; the other end of resistor R6 is connected to the first pin of interface 500. The other ends of resistors R1, R3, and R5 are grounded.

[0037] In the sampling circuit 100, three sets of resistors, R1 and R2, R3 and R4, and R5 and R6, divide the voltage of the interface 500 signal to ensure that the level signal does not exceed VCC. At the same time, they are connected to VCC through clamping diodes to ensure that the signal input pin does not exceed the range allowed by the microcontroller 200.

[0038] After the entire circuit is powered on, the EN pin of the microcontroller 200 outputs a high level, which latches the output of the 74AHC367 chip IC2. First, the ADC detects the three signals FLAG, TXD, and RXD of the microcontroller 200 interface 500. These three signals are then sent to the three-channel ADC interface 500 (pin) of the microcontroller 200 after being divided by resistors. 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 pin 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.

[0039] In a practical application example: This circuit uses a 3.3V~4V power supply. The external power supply generates the module power supply voltage VCC through IC3 (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. If 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.

[0040] During idle communication periods, the microcontroller 200 on this IoT interface 500 device detects the voltage level of the interface 500. If the voltage level is abnormal, the port is shut down to protect the device from damage.

[0041] This invention connects the interface 500 to the water pump controller and then uses peripheral components to form an Internet of Things network, enabling the water pump controller to effectively achieve network communication. At this time, the network module 300 is powered on, and the enable pin of the microcontroller 200 will output a high level, which locks the chip IC2. Only after the signal is sampled by the sampling circuit 100 and the signal is judged to be normal will the enable pin output a low level to achieve effective communication through the interface 500.

[0042] Based on the hardware design of Embodiment 1 above, the working process is as follows: Using the aforementioned water pump IoT interface 500 as hardware, combined with... Figure 2 Understanding includes the following steps:

[0043] Step 1: The enable pin of the microcontroller 200 outputs a high-level signal;

[0044] Step 2: The ADC1, ADC2, and ADC3 sampling pins of the microcontroller 200 acquire three sampling signals;

[0045] Step 3: The microcontroller 200 determines whether the three sampled signals are normal. If they are not normal, it closes the communication connection of interface 500 and returns to step 1. If they are normal, it controls the enable pin to output a low-level signal, and the microcontroller 200 performs normal communication processing.

[0046] Step 4: Determine if the communication process is idle. If it is, return to Step 2; otherwise, process other processes.

[0047] In this invention, during idle communication periods, the microcontroller 200 on the module detects the 500 voltage level at the interface. If the voltage level is abnormal, the port is shut down, providing reliable circuit protection to prevent damage and malfunction of the circuit module. This solution implements priority judgment processing by the microcontroller 200 during the communication process, improving operational reliability.

[0048] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water pump connector, comprising a network module (300), a microcontroller (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 microcontroller (200). The sampling pin of the microcontroller (200) is connected to the communication pin of the interface (500) through the sampling circuit (100). The communication pin of the microcontroller (200) is connected to the communication pin of the interface (500) through the line buffer (400). The power supply pin on the interface (500) is supplied to the networking module (300), the microcontroller (200), the sampling circuit (100), and the line buffer (400) through a voltage regulator.

2. A water pump coupling 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 microcontroller (200) is connected to the chip IC2, and the enable pin of the microcontroller (200) is connected to the first pin of the chip IC2.

3. A water pump coupling according to claim 1, characterized in that, One end of the voltage regulator is connected to the fourth pin of the interface (500) for the access of 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 microcontroller (200) through the resistor R7.

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

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