Wireless liquid level sensor with high reliability

Abstract

The utility model overcomes the defects in the prior art, provides a wireless liquid level sensor with high reliability, avoids aging failure, has double insurance, is simple and convenient to install, is wrapped with rubber on the outer side, and prevents a fish tank from being scratched by a magnet, and adopts the technical scheme that the wireless liquid level sensor with high reliability is provided for solving the technical problems. Comprising a magnet, a rear cover, a circuit board and a front shell, the circuit board is arranged between the rear cover and the front shell, the magnet is arranged on the back face of the rear cover, the front shell is an arc-shaped shell, the arch face of the front shell faces outwards, and a plurality of induction probes arranged on the circuit board correspondingly penetrate and extend out of the front shell. The sensing probe belonging to the common position and the other sensing probes are not on the same vertical line; the aquarium container can be widely applied to the field of aquarium containers.

Description

Technical Field

[0001] The utility model relates to a wireless liquid level sensor with high reliability, belonging to the technical field of aquarium containers. Background Art

[0002] In fields such as aquariums, it is necessary to monitor the water in liquid containers in real time, replenish it in time when the water is low, and alarm in time when the water is too much. The fish tank is easily scratched during use, which requires a safe and reliable liquid level sensor. Conventional liquid level sensors need to be connected to the power cord, which is inconvenient to use. Long particles can easily connect to the two probes and cause a short circuit. In addition, long-term immersion in water will cause microorganisms to attach to the liquid level sensor, leading to malfunction. It is also prone to aging, causing short circuits and leakage. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art and provides a wireless liquid level sensor with high reliability, which avoids aging failure, has double insurance, is easy to install, and is wrapped with rubber on the outside to prevent the magnet from scratching the fish tank.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a wireless liquid level sensor with high reliability, including a magnet, a back cover, a circuit board and a front shell, the circuit board is arranged between the back cover and the front shell, the magnet is arranged on the back of the back cover, the front shell is an arc-shaped shell, and the arch surface of the front shell faces outward, and the multiple sensing probes arranged on the circuit board extend through the front shell accordingly, and the sensing probes belonging to the common position are not on the same vertical line as the other sensing probes.

[0005] Furthermore, the front shell is made of engineering plastic, or the outer side of the front shell is wrapped with a rubber layer.

[0006] Furthermore, the sensing probe includes a common position sensing probe, a low liquid level sensing probe, a high liquid level sensing probe and an overflow position sensing probe. The common position sensing probe, the low liquid level sensing probe, the high liquid level sensing probe and the overflow position sensing probe are arranged on the circuit board in sequence from low to high, and the common position sensing probe and the low liquid level sensing probe, the high liquid level sensing probe and the overflow position sensing probe are not on the same vertical line, and the low liquid level sensing probe, the high liquid level sensing probe and the overflow position sensing probe can all form a loop with the common position sensing probe.

[0007] Furthermore, a diode A and a diode B are provided on the circuit board, wherein the diode B is located above the diode A. When the diode A is on, it is used to indicate that the liquid level is lower than the low liquid level sensing probe, and when the diode B is on, it is used to indicate that the liquid level has reached the overflow level sensing probe.

[0008] Furthermore, a button is provided at the top of the circuit board, which penetrates the front shell and extends to the outside of the front shell. A button battery and a wireless transmitting patch are provided on the circuit board. The button battery supplies power to various components on the circuit board, and the wireless transmitting patch is used to send the working status of the circuit board to the outside world.

[0009] Furthermore, the circuit board automatically starts to detect the sensing probe once at a certain interval, thereby extending the service life of the button battery.

[0010] Compared with existing technologies, this new device offers the following advantages: the protruding surface of the metal sensing probe, i.e., the front shell, is designed as a circular arc, eliminating the risk of long particles directly connecting the two probes when on the same surface. It is powered by a button battery and connects to a low-power wireless receiver at the push of a button, making it easy to use. To extend the battery life, it is set to automatically start checking the liquid level every 20 seconds. Installation is simple, and the outer surface is wrapped in rubber to prevent the magnet from scratching the fish tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the exploded structure of the present invention.

[0013] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure.

[0014] In the figure: 1 is a magnet, 2 is a back cover, 3 is a circuit board, 4 is a front shell, 5 is a sensing probe, 51 is a common position sensing probe, 52 is a low liquid level sensing probe, 53 is a high liquid level sensing probe, 54 is an overflow position sensing probe, 6 is a diode A, 7 is a diode B, 9 is a button battery, and 10 is a wireless transmitting patch. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to specific embodiments.

[0016] like Figure 1 、 Figure 2As shown, the utility model is a wireless liquid level sensor with high reliability, including a magnet 1, a back cover 2, a circuit board 3 and a front shell 4, the circuit board 3 is arranged between the back cover 2 and the front shell 4, the front shell 4 is engineering plastic, or the outside of the front shell 4 is wrapped with a rubber layer, the magnet 1 is arranged on the back of the back cover 2, and the outside of the magnet 1 can be attached with a designed rubber, the front shell 4 is an arc-shaped shell, and the arch surface of the front shell 4 faces outward, and the multiple sensing probes 5 arranged on the circuit board 3 extend through the front shell 4, and the sensing probes 5 include a common position sensing probe 5 1. Low liquid level sensing probe 52, high liquid level sensing probe 53 and overflow position sensing probe 54. The common position sensing probe 51, low liquid level sensing probe 52, high liquid level sensing probe 53 and overflow position sensing probe 54 are arranged on the circuit board 3 in sequence from low to high, and the common position sensing probe 51 and the low liquid level sensing probe 52, high liquid level sensing probe 53 and overflow position sensing probe 54 are not on the same vertical line. The low liquid level sensing probe 52, high liquid level sensing probe 53 and overflow position sensing probe 54 can all form a loop with the common position sensing probe 51.

[0017] Among them, in order to avoid the overflow position sensing probe 54 from malfunctioning due to the attachment of microorganisms due to being immersed in water for a long time, the overflow position sensing probe 54 can also adopt a separate circuit, so that the overflow position sensing probe 54 is above the liquid level and does not need to be immersed in water for a long time. The risk of failure is small, and the separate circuit will not be disturbed by the bottom, and the liquid level alarm can be sensed independently.

[0018] The circuit board 3 is provided with a diode A6 and a diode B7, with diode B7 located above diode A6. When diode A6 is illuminated, it indicates that the liquid level is below the low-level sensing probe 52, and when diode B7 is illuminated, it indicates that the liquid level has reached the overflow sensing probe 54. A button 8 is provided at the top end of the circuit board 3, extending through the front housing 4 and outward. A button battery 9 and a wireless transmitter patch 10 are provided on the circuit board 3. The button battery 9 powers the various components on the circuit board, and the wireless transmitter patch 10 is used to transmit the circuit board's operating status to the outside world.

[0019] The circuit board 3 automatically starts to detect the sensing probe 5 once every 20 seconds, thereby extending the service life of the button battery 9.

[0020] The extending surface (plastic surface) of the metal sensing probe of the utility model is designed to be an arc surface, which solves the risk of long particles directly connecting the two probes when they are on the same surface.

[0021] The utility model is powered by a button battery. Press the button to connect to a low-power wireless (Bluetooth or Zigbee, etc.) and receive signals wirelessly. It is easy to use. In order to extend the battery life, it is set to automatically start detecting the liquid level every 20 seconds.

[0022] This utility model is used in liquid containers. When the water level drops below the low level, diode A6 illuminates; when the water level reaches the high level, diode A6 goes off. To prevent the titanium needle from malfunctioning due to frequent seawater immersion and the attachment of microorganisms, a separate overflow sensing needle is added at the top, providing double insurance. When the water level reaches the overflow level, the overflow metal needle conducts, illuminating diode B7. The back cover is embedded with an iron sheet and attached to the side wall of the fish tank with a magnet. Installation is simple, and to prevent the magnet from scratching the fish tank, the outer surface is wrapped with rubber.

[0023] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A wireless liquid level sensor with high reliability, comprising a magnet (1), a rear cover (2), a circuit board (3) and a front shell (4), wherein the circuit board (3) is arranged between the rear cover (2) and the front shell (4), and the magnet (1) is arranged on the back of the rear cover (2), characterized in that: The front shell (4) is an arc-shaped shell, and the arch surface of the front shell (4) faces outward. The plurality of sensing probes (5) provided on the circuit board (3) extend through the front shell (4), and the sensing probes (5) belonging to the common position are not on the same vertical line as the other sensing probes (5).

2. A highly reliable wireless liquid level sensor according to claim 1, characterized in that: The front shell (4) is made of engineering plastic, or the outside of the front shell (4) is wrapped with a rubber layer.

3. A wireless liquid level sensor with high reliability according to claim 1, characterized in that: The sensing probe (5) comprises a common position sensing probe (51), a low liquid level sensing probe (52), a high liquid level sensing probe (53) and an overflow position sensing probe (54); the common position sensing probe (51), the low liquid level sensing probe (52), the high liquid level sensing probe (53) and the overflow position sensing probe (54) are arranged on the circuit board (3) in order from low to high; the common position sensing probe (51) and the low liquid level sensing probe (52), the high liquid level sensing probe (53) and the overflow position sensing probe (54) are not on the same vertical line; the low liquid level sensing probe (52), the high liquid level sensing probe (53) and the overflow position sensing probe (54) can all form a loop with the common position sensing probe (51).

4. A highly reliable wireless liquid level sensor according to claim 3, characterized in that: A diode A (6) and a diode B (7) are provided on the circuit board (3). The diode B (7) is located above the diode A (6). When the diode A (6) is on, it indicates that the liquid level is lower than the low liquid level sensing probe (52). When the diode B (7) is on, it indicates that the liquid level has reached the overflow level sensing probe (54).

5. A highly reliable wireless liquid level sensor according to claim 4, characterized in that: A button (8) is provided at the top end of the circuit board (3), and the button (8) extends through the front shell (4) and outward from the front shell (4). A button battery (9) and a wireless transmitting patch (10) are provided on the circuit board (3). The button battery (9) supplies power to various components on the circuit board, and the wireless transmitting patch (10) is used to transmit the working status of the circuit board to the outside world.

6. A highly reliable wireless liquid level sensor according to claim 5, characterized in that: The circuit board (3) automatically starts to detect the sensing probe (5) once at a certain interval, thereby extending the service life of the button battery (9).

Images