A liquid level calibration and liquid level detection control circuit and a liquid level detection system

Abstract

This invention provides a liquid level calibration and detection control circuit and a liquid level detection system. The detection circuit includes a calibration control module, a detection control module, a control chip, and a touch screen. The input terminal of the detection control module is connected to the output terminal of the liquid level detection module, the output terminal of the detection control module is connected to the first communication interface of the control chip, the second communication interface of the control chip is connected to the touch screen, the third communication interface of the control chip is connected to the input terminal of the calibration control module, and the output terminal of the calibration control module is connected to the input terminal of the liquid level detection module. Through the coordinated operation of the above modules, this application effectively solves the problems of cumbersome calibration process, lack of real-time visualization in monitoring, and untimely identification of abnormal liquid levels in liquid level detection. In the event of water shortage or overflow in the water tank, the circuit can quickly identify the abnormal state and prompt the user through the touch screen, thereby improving the efficiency and accuracy of liquid level detection.

Description

Technical Field

[0001] This utility model relates to the field of liquid level detection technology, specifically to a liquid level calibration and liquid level detection control circuit and a liquid level detection system. Background Technology

[0002] In the field of liquid level monitoring, traditional calibration methods typically rely on cumbersome manual operations or specialized equipment, resulting in a time-consuming calibration process that is susceptible to human error. Existing technologies lack sufficient visualization of liquid level data, making it difficult for operators to obtain real-time information on the tank's liquid level and hindering timely warnings of abnormal conditions such as water shortages or overflows.

[0003] In other words, how to provide a liquid level calibration and liquid level detection control circuit that simplifies the calibration process and visualizes the monitoring process is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0004] To address the aforementioned problems, this utility model aims to provide a liquid level calibration and liquid level detection control circuit and a liquid level detection system, thereby solving at least one of the above-mentioned technical problems.

[0005] To at least solve the above-mentioned technical problems, in a first aspect, this utility model provides a liquid level calibration and liquid level detection control circuit, applied to a liquid level detection module, the circuit comprising: Calibration control module, detection control module, control chip and touch screen display; The input terminal of the detection control module is connected to the output terminal of the liquid level detection module, the output terminal of the detection control module is connected to the first communication interface of the control chip, the second communication interface of the control chip is connected to the touch screen, the third communication interface of the control chip is connected to the input terminal of the calibration control module, and the output terminal of the calibration control module is connected to the input terminal of the liquid level detection module.

[0006] Preferably, the calibration control module includes: A first resistor R1, one end of which is the input terminal of the calibration control module, and the other end of which is the output terminal of the calibration control module; Zener diode D1, the cathode of which is connected to the other end of the first resistor R1, and the anode of which is grounded.

[0007] Preferably, the calibration control module further includes: The first electrostatic diode D2 has one end connected to one end of the first resistor R1, and the other end of the first electrostatic diode D2 is grounded.

[0008] Preferably, the detection control module includes: Transistor Q1, wherein the collector of transistor Q1 is the output terminal of the detection and control module, and the emitter of transistor Q1 is grounded; The second resistor R2 has one end connected to the collector of the transistor Q1 and the other end connected to an external first power supply. The third resistor R3 has one end connected to the base of the transistor Q1, and the other end is the input terminal of the detection and control module.

[0009] Preferably, the detection control module further includes: The second electrostatic diode D3 has one end connected to one end of the second resistor R2, and the other end grounded.

[0010] Preferably, the transistor Q1 is an NPN transistor.

[0011] Preferably, the liquid level detection module is mounted on the surface of the water tank being detected, and is used to collect real-time liquid level data in the water tank and output normal and abnormal liquid level signals.

[0012] Preferably, the circuit further includes: The fourth resistor R4 has one end connected to an external second power supply and the other end connected to the power supply terminal of the liquid level detection module. The third electrostatic diode D4 has one end connected to the other end of the fourth resistor R4, and the other end of the third electrostatic diode D4 is grounded.

[0013] Preferably, the supply voltage of the first power supply is 5V, and the supply voltage of the second power supply is 12V.

[0014] Secondly, this application provides a liquid level detection system, the system comprising: A liquid level detection module is mounted on the surface of the water tank being detected. This liquid level detection module is used to collect real-time liquid level data in the water tank and output normal and abnormal liquid level signals. The liquid level calibration and liquid level detection control circuit described in the first aspect is electrically connected to the liquid level detection module.

[0015] Beneficial effects: This invention provides a liquid level calibration and detection control circuit, applied to a liquid level detection module, including a calibration control module, a detection control module, a control chip, and a touch screen. The input terminal of the detection control module is connected to the output terminal of the liquid level detection module for receiving real-time liquid level detection signals from the liquid level detection module. The output terminal of the detection control module is connected to the first communication interface of the control chip for transmitting detection data to the control chip. The second communication interface of the control chip is connected to the touch screen, enabling bidirectional data interaction between the control chip and the touch screen. That is, on the one hand, the control chip transmits data to the touch screen via the transmitting terminal of the second communication interface. The output display drive signal is used to display the abnormal or normal data detected by the liquid level detection module, thereby enabling a visual display of the liquid level status. On the other hand, the control chip receives touch commands from the touch screen via the receiver of the second communication interface; these commands can be liquid level calibration instructions. The third communication interface of the control chip is connected to the input of the calibration control module, used to output calibration control signals to the calibration control module. The output of the calibration control module is connected to the input of the liquid level detection module, used to feed back dynamic calibration parameters to the liquid level detection module to calibrate the liquid level parameter threshold of the liquid level detection module. This application, through the coordinated work of the above modules, effectively solves the problems of cumbersome calibration processes, lack of real-time visualization in liquid level detection, and untimely identification of liquid level anomalies. For example, in the case of water tank shortage or overflow, this circuit can quickly identify the abnormal state and prompt the user through the touch screen, while also allowing the user to complete calibration through simple operations, thereby improving the efficiency and accuracy of liquid level detection.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the liquid level calibration and liquid level detection control circuit provided in Example 1; Figure 2 This is a partial circuit structure diagram provided for Embodiment 1. Detailed Implementation

[0019] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art are within the scope of protection of this utility model; wherein the keyword "and / or" involved in this embodiment indicates two situations, and or. In other words, A and / or B mentioned in the embodiments of this specification indicates two situations, A and B, and A or B, describing three states of A and B. For example, A and / or B means: only A is included but not B; only B is included but not A; and A and B are included.

[0020] Furthermore, in the embodiments of this specification, when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component present. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component present.

[0021] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model 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 this utility model.

[0022] Example 1 Please see Figure 1-2This embodiment provides a liquid level calibration and detection control circuit, applied to a liquid level detection module. The control circuit provided in this embodiment includes a calibration control module, a detection control module, a control chip, and a touch screen. The input terminal of the detection control module is connected to the output terminal of the liquid level detection module to receive real-time liquid level detection signals from the liquid level detection module. The output terminal of the detection control module is connected to the first communication interface of the control chip to transmit detection data to the control chip. The second communication interface of the control chip is connected to the touch screen to achieve bidirectional data interaction between the control chip and the touch screen; that is, on the one hand, the control chip transmits data via the second communication interface... The control chip outputs a display drive signal to the touch screen to display abnormal or normal data detected in real time by the liquid level detection module, thereby enabling a visual display of the liquid level status. On the other hand, the control chip receives touch commands from the touch screen via the receiver of the second communication interface; these commands can be liquid level calibration instructions. The control chip's third communication interface is connected to the input of the calibration control module, outputting calibration control signals to it. The output of the calibration control module is connected to the input of the liquid level detection module, feeding back dynamic calibration parameters to calibrate the liquid level parameter threshold of the liquid level detection module. This application effectively solves the problems of cumbersome calibration processes, lack of real-time visualization, and untimely identification of abnormal liquid levels in liquid level detection through the coordinated operation of the above modules. For example, in the event of water shortage or overflow in the water tank, this circuit can quickly identify the abnormal state and prompt the user through the touch screen, while also allowing the user to complete calibration through simple operations, thereby improving the efficiency and accuracy of liquid level detection.

[0023] The specific usage process is as follows: When it is necessary to calibrate the liquid level parameters of the liquid level detection module, the operator can send a touch command for calibration through the touch screen. After receiving the command, the control chip processes it and sends a calibration command to the calibration control module. The calibration control module converts the command into a signal that the liquid level detection module can recognize or a signal that meets the receiving requirements of the liquid level detection module, and then sends it to the liquid level detection module to calibrate the liquid level parameters. When feedback on the detection status of the liquid level detection module is required, the detection control module obtains the real-time liquid level detection signal from the liquid level detection module, converts the signal into a signal that the control chip can recognize or a signal that meets the receiving requirements of the control chip, and then sends it to the control chip. The control chip processes the signal and sends the corresponding detection result to the touch screen for display.

[0024] The output of the detection control module is represented as attached. Figure 2 The WATER_CHECK terminal in the calibration control module is represented as the attached terminal. Figure 2The WATER_CAL end in the middle, Figure 2 CN1 in the text can represent a liquid level detection module or a connector used to connect to the liquid level detection module.

[0025] In one possible implementation, the calibration control module includes: a first resistor R1 and a Zener diode D1; one end of the first resistor R1 is the input terminal of the calibration control module, and the other end of the first resistor R1 is the output terminal of the calibration control module; the cathode of the Zener diode D1 is connected to the other end of the first resistor R1, and the anode of the Zener diode D1 is grounded.

[0026] Specifically, by setting the first resistor R1 to limit the current amplitude, interference from signal source overload or inrush current to subsequent circuits is avoided, thus providing basic stability for the calibration signal. The voltage signal is stabilized within the range of the control chip's received voltage signal by setting the Zener diode D1; in practice, the voltage signal can be stabilized to 3.3V using the Zener diode.

[0027] Furthermore, the calibration control module also includes a first electrostatic diode D2, one end of which is connected to one end of a first resistor R1, and the other end of the first electrostatic diode D2 is grounded.

[0028] Specifically, by setting up an electrostatic diode D2 to avoid the impact of electrostatic interference on subsequent circuits, a highly efficient electrostatic protection function can be achieved without affecting the normal liquid level signal transmission.

[0029] In one possible implementation, the detection control module includes a transistor Q1, a second resistor R2, and a third resistor R3; the collector of transistor Q1 is the output terminal of the detection control module, and the emitter of transistor Q1 is grounded; one end of the second resistor R2 is connected to the collector of transistor Q1, and the other end of the second resistor R2 is connected to an external first power supply; one end of the third resistor R3 is connected to the base of transistor Q1, and the other end of the third resistor R3 is the input terminal of the detection control module.

[0030] Furthermore, transistor Q1 is an NPN transistor.

[0031] Specifically, the supply voltage of the first power supply can be set to 5V. Transistor Q1 is a semiconductor device with amplification and switching functions. The transistor Q1 in this application can be implemented using an NPN transistor.

[0032] One feasible liquid level calibration process is as follows: When level calibration of the level detection module is not required, the control chip can be used to send a signal to the input terminal of the calibration control module (see attached diagram). Figure 2The WATER_CAL module sends a high-level signal, at which time transistor Q1 is turned on, thereby pulling down the output signal of the calibration control module to send a low-level signal to the liquid level detection module. When level calibration of the level detection module is not required, the control chip can be used to send a signal to the input terminal of the calibration control module (see attached diagram). Figure 2 The WATER_CAL signal in the module is sent to a low level. At this time, the transistor Q1 is turned off. Since the collector of the transistor Q1 is connected to the first power supply, the output signal of the calibration control module is pulled high under the action of the first power supply to send a high level signal to the liquid level detection module, thereby starting the liquid level calibration.

[0033] Furthermore, the detection and control module also includes a second electrostatic diode D3. One end of the second electrostatic diode D3 is connected to one end of the second resistor R2, and the other end of the second electrostatic diode D3 is grounded, so as to provide electrostatic protection for the circuit through the electrostatic diode D3 and prevent electrostatic interference from damaging the sensitive components.

[0034] In one possible implementation, the liquid level detection module is mounted on the surface of the water tank being detected, and is used to collect real-time liquid level data in the water tank and output normal and abnormal liquid level signals.

[0035] Specifically, the liquid level detection module can be implemented using existing detection devices, specifically those capable of sensing changes in liquid level and converting the information into an electrical signal output. The module collects liquid level data in real time and converts it into normal or abnormal signals, enabling the control chip to quickly identify the liquid level status. When the liquid level is within a safe range, a normal signal is output to maintain system stability; when the liquid level exceeds a preset threshold, an abnormal signal is immediately output to trigger an alarm mechanism. This simplifies the processing logic of the control chip, improves calibration accuracy and alarm reliability, and effectively addresses real-world scenarios such as water tank shortages or overflows.

[0036] In one possible implementation, the circuit further includes a fourth resistor R4 and a third electrostatic diode D4; one end of the fourth resistor R4 is connected to an external second power supply, and the other end of the fourth resistor R4 is connected to the power supply terminal of the liquid level detection module; one end of the third electrostatic diode D4 is connected to the other end of the fourth resistor R4, and the other end of the third electrostatic diode D4 is grounded.

[0037] The second power supply is the power supply unit that provides the driving voltage to the liquid level detection module. Its power supply voltage can be set according to the power requirements of the liquid level detection module. Generally, the power supply voltage of the second power supply can be set to 12V to meet the driving voltage requirements of most liquid level detection modules. An electrostatic diode D4 is used to effectively suppress electrostatic interference and prevent power supply noise from affecting the liquid level signal acquisition.

[0038] In one possible implementation, the first power supply has a supply voltage of 5V, and the second power supply has a supply voltage of 12V.

[0039] Specifically, the first power supply is a power supply unit that provides standard logic voltage to digital circuits such as control chips and touch screens. It can be implemented using common DC regulated power supply modules. The purpose is to ensure that digital circuits work in a stable voltage environment and avoid signal misinterpretation due to voltage fluctuations.

[0040] In detail, by precisely setting the first power supply to 5V, the control chip and touch display can operate under standard logic voltage, thereby ensuring reliable processing of calibration data and stability of the visualization display.

[0041] It is understandable that a connector can be provided to connect the liquid level detection module and the circuit provided in this application, thereby improving the convenience of connection and wiring.

[0042] Example 2 This application also provides a liquid level detection system, which includes: a liquid level detection module and a liquid level calibration and liquid level detection control circuit as described in Embodiment 1; the liquid level detection module is mounted on the surface of the water tank being detected, and the liquid level detection module is used to collect real-time liquid level data in the water tank and output normal liquid level signals and abnormal liquid level signals; the control circuit is electrically connected to the liquid level detection module to realize liquid level calibration control and liquid level detection visualization display of the liquid level detection module.

[0043] The core innovation of this embodiment lies in combining the liquid level detection module with a dedicated control circuit in a closed-loop manner. This solves the problems of rapid calibration, visual monitoring, and erroneous data identification in liquid level detection, achieving high-precision liquid level monitoring and timely alarm. Specifically, the liquid level detection module can collect liquid level data in the water tank in real time and output liquid level status signals, providing a reliable data input basis for the system. Simultaneously, the liquid level calibration and liquid level detection control circuits, through the collaborative work of their internal modules, support rapid calibration operations and generate visual monitoring feedback, effectively improving the system's response speed and monitoring accuracy. It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the present utility model's technical solution shall still fall within the scope of the present utility model's technical solution.

Claims

1. A liquid level calibration and liquid level detection control circuit, applied to a liquid level detection module, characterized in that, The circuit includes: Calibration control module, detection control module, control chip and touch screen display; The input terminal of the detection control module is connected to the output terminal of the liquid level detection module, the output terminal of the detection control module is connected to the first communication interface of the control chip, the second communication interface of the control chip is connected to the touch screen, the third communication interface of the control chip is connected to the input terminal of the calibration control module, and the output terminal of the calibration control module is connected to the input terminal of the liquid level detection module.

2. The liquid level calibration and liquid level detection control circuit as described in claim 1, characterized in that, The calibration control module includes: A first resistor R1, one end of which is the input terminal of the calibration control module, and the other end of which is the output terminal of the calibration control module; Zener diode D1, the cathode of which is connected to the other end of the first resistor R1, and the anode of which is grounded.

3. The liquid level calibration and liquid level detection control circuit as described in claim 2, characterized in that, The calibration control module also includes: The first electrostatic diode D2 has one end connected to one end of the first resistor R1, and the other end of the first electrostatic diode D2 is grounded.

4. The liquid level calibration and liquid level detection control circuit as described in claim 3, characterized in that, The detection control module includes: Transistor Q1, wherein the collector of transistor Q1 is the output terminal of the detection and control module, and the emitter of transistor Q1 is grounded; The second resistor R2 has one end connected to the collector of the transistor Q1 and the other end connected to an external first power supply. The third resistor R3 has one end connected to the base of the transistor Q1, and the other end is the input terminal of the detection and control module.

5. The liquid level calibration and liquid level detection control circuit as described in claim 4, characterized in that, The detection control module also includes: The second electrostatic diode D3 has one end connected to one end of the second resistor R2, and the other end grounded.

6. The liquid level calibration and liquid level detection control circuit as described in claim 4, characterized in that, The transistor Q1 is an NPN transistor.

7. The liquid level calibration and liquid level detection control circuit as described in claim 1, characterized in that, The liquid level detection module is mounted on the surface of the water tank being detected, and is used to collect real-time liquid level data in the water tank and output normal and abnormal liquid level signals.

8. The liquid level calibration and liquid level detection control circuit as described in claim 5, characterized in that, The circuit also includes: The fourth resistor R4 has one end connected to an external second power supply and the other end connected to the power supply terminal of the liquid level detection module. The third electrostatic diode D4 has one end connected to the other end of the fourth resistor R4, and the other end of the third electrostatic diode D4 is grounded.

9. The liquid level calibration and liquid level detection control circuit as described in claim 8, characterized in that: The first power supply has a supply voltage of 5V, and the second power supply has a supply voltage of 12V.

10. A liquid level detection system, characterized in that, The system includes: The liquid level detection module is mounted on the surface of the water tank being detected. It is used to collect real-time liquid level data in the water tank and output normal and abnormal liquid level signals. The liquid level calibration and liquid level detection control circuit as described in any one of claims 1-9 is electrically connected to the liquid level detection module.

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