Digital display ultrasonic liquid level sensor

Abstract

The utility model discloses a kind of digital display ultrasonic liquid level sensors, it is related to sensor technical field, including integrally connected first shell and second shell, circuit board with display screen, contact switch, pilot lamp is installed in first shell interior, ultrasonic probe is inlaid in second shell end portion, circuit board connecting wire.The first shell top is provided with through-hole, and the cover plate with window and key cap is matched;Side is opened and is threaded, and the sealing washer is arranged at the wire passing position;Second shell surface has external thread;The sensor can work independently without host computer, and the data is directly shown through display screen, and the contact switch is adjusted parameter, and the pilot lamp shows state, and the threaded structure is convenient to install, solve the problems, such as traditional sensor rely on peripheral equipment, difficult operation and maintenance, poor installation adaptability, applicable to a variety of liquid level monitoring scene.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to a digital display ultrasonic liquid level sensor. Background Technology

[0002] Currently, the conventional method for setting thresholds is through a dedicated signal cable. Existing technical solutions require a host computer or controller, resulting in weak independent operation and increased system complexity and cost. Furthermore, the inability to directly obtain measurement data or adjust parameters necessitates additional testing equipment for troubleshooting, increasing maintenance difficulty. Additionally, the installation orientation angle of ultrasonic products has a decisive impact on measurement accuracy, anti-interference capability, and system reliability. Current solutions typically only output the raw distance signal, failing to acquire information such as signal strength and operating status, causing inconvenience for installation and debugging. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model proposes a digital display ultrasonic liquid level sensor.

[0004] This utility model proposes a digital display ultrasonic liquid level sensor, which includes a first housing and a second housing that are integrally connected. A circuit board is installed inside the first housing, and an ultrasonic probe is embedded in the end of the second housing. The circuit board integrates a display screen, a contact switch, and an indicator light, and the circuit board is connected to wires.

[0005] Furthermore, a first through hole and several second through holes are respectively opened at the top of the first housing. The first through hole corresponds to the display screen, and the several second through holes correspond to the contact switch and the indicator light, respectively.

[0006] Furthermore, a cover plate is fixedly connected to the top of the first housing, and a first viewing window is opened inside the cover plate, which corresponds to the first through hole.

[0007] Furthermore, a switch cap is movably connected to the surface of the cover plate, and the switch cap corresponds to a contact switch so as to press against the contact switch.

[0008] Furthermore, a second viewing window is embedded in the center of the cover plate, and the second viewing window corresponds to the indicator light.

[0009] Furthermore, a wire hole is provided on the side of the first housing, through which the free end of the wire extends to the outside of the first housing, and a sealing gasket is provided between the two.

[0010] Furthermore, the surface of the second housing has external threads to facilitate the installation of the sensor with a nut.

[0011] The beneficial effects of this utility model are as follows: by integrating a display screen, contact switches and indicator lights, threshold setting, data viewing and parameter adjustment can be completed independently without additional host computer or controller, simplifying the system structure and reducing costs. It can also intuitively obtain information such as signal strength and operating status, which is convenient for installation, debugging and fault diagnosis, and improves the usability and maintenance efficiency of the sensor. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the circuit board structure in this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the first shell in this utility model;

[0015] Figure 4 This is a first-view structural diagram of the present invention after assembly;

[0016] Figure 5 This is a structural schematic diagram of the present invention from a second perspective after assembly;

[0017] Figure 6 This is a half-sectional view of the assembled version of this utility model.

[0018] In the diagram: 1. First housing; 11. First through hole; 12. Second through hole; 13. Cover plate; 14. First viewing window; 15. Switch cap; 16. Second viewing window; 17. Wire hole; 2. Second housing; 21. External thread; 3. Circuit board; 4. Ultrasonic probe; 5. Display screen; 6. Contact switch; 7. Indicator light; 8. Wire. Detailed Implementation

[0019] Reference Figure 1-6 This utility model proposes a digital display ultrasonic liquid level sensor, aiming to achieve accurate detection and digital display of liquid level, solving the problems of inconvenient installation and unintuitive display in traditional liquid level detection devices. The sensor's main structure is constructed from an integrated first housing 1 and a second housing 2. Internally, it includes components such as an integrated circuit board 3, an ultrasonic probe 4, a cover plate 13, and wires 8, to complete liquid level detection, signal processing, and display output. It also possesses good installation adaptability and protective performance. The specific technical solution is as follows:

[0020] The first housing 1 and the second housing 2 are connected as a single unit, serving as the basic support structure for the sensor. The first housing 1 is used to house core components such as the circuit board 3, while the end of the second housing 2 is used to embed and install the ultrasonic probe 4. The first housing 1 is made of high-strength stainless steel and has a square structure, while the second housing 2 is made of copper-plated nickel and has a cylindrical structure to ensure the stability of the internal components and resist minor external impacts and interference.

[0021] Circuit board 3 is the core control and signal processing component of the sensor, integrating display screen 5, contact switch 6, and indicator light 7. Display screen 5 visually displays liquid level detection data; contact switch 6 enables sensor operation functions such as power-on and mode switching; indicator light 7 indicates the sensor's operating status, such as power on / off and detection operation. Circuit board 3 connects the integrated components through soldering and plug-in methods, ensuring stable signal transmission and functional coordination.

[0022] The ultrasonic probe 4 is embedded in the end of the second housing 2. Its function is to transmit and receive ultrasonic signals. During operation, it transmits ultrasonic signals to the liquid surface. The signals are received after being reflected by the liquid surface. Based on the propagation time and speed of the ultrasonic waves, the liquid level height data is calculated, providing a detection signal source for subsequent digital display.

[0023] One end of the wire 8 is connected to the circuit board 3 for transmitting power and signals. Its free end extends to the outside through the wire hole 17 on the side of the first housing 1, realizing the connection between the sensor and external power supply, control equipment or data acquisition system, providing power for the operation of the sensor, and transmitting detection data and control commands at the same time;

[0024] The cover plate 13 is fixedly connected to the top of the first housing 1, serving both protective and functional purposes. A first viewing window 14 is provided inside, corresponding to the first through hole 11 at the top of the first housing 1, allowing the content displayed on the screen 5 to be observed. A movably connected keycap 15 corresponds to the contact switch 6 on the circuit board 3; pressing the keycap 15 operates the contact switch 6. A second viewing window 16 is embedded in the middle, corresponding to the indicator light 7, for observing the status of the indicator light 7.

[0025] Work process:

[0026] The sensor is powered by an external power supply connected via wire 8. Pressing the keycap 15 on the cover plate 13 activates the contact switch 6 on the circuit board 3, powering on and initializing the sensor. At this time, the indicator light 7 displays the power-on status through the second window 16 of the cover plate 13. If a specific color light illuminates, the sensor is powered on, and the ultrasonic probe 4 emits an ultrasonic signal. The signal travels to the surface of the liquid being measured and is reflected, which is then received by the ultrasonic probe 4. Based on the ultrasonic wave propagation time and parameters such as the speed of ultrasonic waves in air, the circuit board 3 calculates the liquid level height data using an internal algorithm. The circuit board 3 transmits the calculated liquid level height data to the display screen 5, which displays the liquid level data visually through the first through-hole 11 at the top of the first housing 1 and the first window 14 of the cover plate 13. Meanwhile, based on the sensor's operating status, such as normal or abnormal detection, indicator light 7 uses different colors and flashing patterns to indicate the working status to the user through the second viewing window 16 of cover plate 13. If wire 8 is connected to external data acquisition systems or other equipment, circuit board 3 can transmit the detected liquid level data to external devices through wire 8 to achieve remote data monitoring, storage, and analysis; it can also receive control commands sent by external devices, such as calibration commands and mode switching commands, and complete sensor function adjustments through the coordination of components such as contact switch 6 to adapt to different application needs.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A digital display ultrasonic liquid level sensor, comprising an integrally connected first housing (1) and second housing (2), characterized in that, The first housing (1) has a circuit board (3) installed inside, and the second housing (2) has an ultrasonic probe (4) embedded in its end. The circuit board (3) integrates a display screen (5), a contact switch (6), and an indicator light (7). The circuit board (3) is connected to wires (8).

2. The digital display ultrasonic liquid level sensor according to claim 1, characterized in that, The top of the first housing (1) is provided with a first through hole (11) and several second through holes (12). The first through hole (11) corresponds to the display screen (5), and the several second through holes (12) correspond to the contact switch (6) and the indicator light (7) respectively.

3. The digital display ultrasonic liquid level sensor according to claim 2, characterized in that, The top of the first housing (1) is fixedly connected to a cover plate (13), and a first viewing window (14) is opened inside the cover plate (13), which corresponds to the first through hole (11).

4. The digital display ultrasonic liquid level sensor according to claim 3, characterized in that, The surface of the cover plate (13) is also movably connected to a switch cap (15), which corresponds to a contact switch (6) to press against the contact switch (6).

5. The digital display ultrasonic level sensor according to claim 3, characterized in that, A second window (16) is embedded in the middle of the cover plate (13), and the second window (16) corresponds to the indicator light (7).

6. The digital display ultrasonic liquid level sensor according to claim 1, characterized in that, A wire hole (17) is provided on the side of the first housing (1). The free end of the wire (8) extends to the outside of the first housing (1) through the wire hole (17), and a sealing gasket is provided between the two.

7. The digital display ultrasonic level sensor according to claim 1, characterized in that, The surface of the second housing (2) has external threads (21) to facilitate the installation of the sensor with a nut.

Images