CN-224216140-U - Hall type water level switch

Abstract

The utility model relates to the technical field of water level switches and discloses a Hall type water level switch which comprises a water level switch body and is characterized in that a floating ball which is in sliding fit with the water level switch body is arranged on the water level switch body, a plurality of magnets are arranged in the floating ball, a circuit board is arranged in the water level switch body, a Hall chip U1 is arranged on the circuit board, a capacitor C is connected to a VCC pin of the Hall chip U1, a GND pin of the Hall chip U1 is grounded to form a first line end, an OUT pin of the Hall chip U1 is connected with a resistor R, a second line end is formed at the other end of the R, and the first line end and the second line end are used for providing signal transmission for the Hall chip U1.

Inventors

• LI PINGLIU
• ZOU YUANHUA

Assignees

• 湖北铱伦科技有限公司

Dates

Publication Date

20260508

Application Date

20250512

Claims (6)

1. 1. A Hall type water level switch comprises a water level switch body (1) and is characterized in that a floating ball (2) which is in sliding fit with the water level switch body is arranged on the water level switch body (1), a plurality of magnets (3) are arranged in the floating ball (2), a circuit board (4) is arranged in the water level switch body (1), a Hall chip U1 is arranged on the circuit board (4), a capacitor C is connected to a VCC pin of the Hall chip U1, a GND pin of the Hall chip U1 is grounded and forms a first wire end, a resistor R is connected to an OUT pin of the Hall chip U1, a second wire end is formed at the other end of the resistor R, and the first wire end and the second wire end are used for providing signal transmission for the Hall chip U1.
2. 2. The hall water level switch according to claim 1, wherein the resistor R1 and the resistor R2 are connected to the second terminal, the capacitor C1 is connected to the first terminal, the other end of the capacitor C1 is connected to the other end of the resistor R2, and the other end of the capacitor C1 is also connected to the external MCU.
3. 3. A hall water level switch according to claim 2, characterized in that a thermistor NTC is further provided, and that one end of the thermistor NTC is connected to a resistor R3 and is in communication with an external MCU, and that a capacitor C2 is connected between the two ends of the thermistor NTC.
4. 4. The Hall type water level switch according to claim 1, wherein a baffle (5) for limiting the travel of the floating ball (2) is arranged at one end, close to the floating ball (2), of the water level switch body (1), and a fixed limiting part (6) is arranged at the other end of the water level switch body (1) for limiting the travel of the floating ball (2).
5. 5. The hall type water level switch according to claim 4, wherein the fixed limiting part (6) is formed with a threaded section (7), is provided with a flat pad (8) sleeved with the threaded section (7), and is provided with a nut (9) in threaded connection with the threaded section (7).
6. 6. The hall type water level switch according to claim 1, wherein the other end of the water level switch body (1) is provided with a cable (10) electrically connected with the circuit board (4), and is provided with a terminal (11) electrically connected with the cable (10).

Description

Hall type water level switch Technical Field The utility model relates to the technical field of water level switches, in particular to a Hall type water level switch. Background The Hall type water level switch is a device for detecting the water level by utilizing the Hall effect, mainly comprises a Hall sensor, a magnetic floater and other parts, when the magnetic floater rises or falls to a specific position along with the water level, the magnetic field generated by the magnetic floater triggers the Hall sensor so as to output corresponding electric signals, thereby realizing the monitoring and control of the water level, having the advantages of high precision, strong stability, long service life and the like, and being widely applied to various devices and systems needing the water level detection; The prior Hall type water level switch is generally of a three-wire type, and when the Hall type proximity switch is connected into a circuit of a product, the circuit of the Hall type proximity switch needs to be adjusted so as to meet the three-wire type connection requirement; The utility model aims to solve the technical problem of providing a two-wire Hall water level switch. Disclosure of utility model The utility model aims to solve the technical problems of providing the two-wire Hall water level switch, which can simplify the original three-wire wiring mode of the Hall proximity switch into a two-wire wiring mode, can meet the requirements of electronic products, avoids the trouble that a circuit is modified to be connected with the Hall switch, and enables the product to directly introduce the Hall water level switch on the original two-wire circuit without modifying the circuit of the Hall water level switch, thereby greatly saving manpower and material resources. The Hall type water level switch comprises a water level switch body, wherein a floating ball which is in sliding fit with the water level switch body is arranged on the water level switch body, a plurality of magnets are arranged in the floating ball, a circuit board is arranged in the water level switch body, a Hall chip U1 is arranged on the circuit board, a VCC pin of the Hall chip U1 is connected with a capacitor C, a GND pin of the Hall chip U1 is grounded and forms a first line end, an OUT pin of the Hall chip U1 is connected with a resistor R, a second line end is formed at the other end of the resistor R, and the first line end and the second line end are used for providing signal transmission for the Hall chip U1. Preferably, the second line end is connected with a resistor R1 and a resistor R2, the first line end is connected with a capacitor C1, the other end of the capacitor C1 is connected with the other end of the resistor R2, and the other end of the capacitor C1 is also communicated with an external MCU. Preferably, a thermistor NTC is further arranged, one end of the thermistor NTC is connected with a resistor R3 and is communicated with an external MCU, and a capacitor C2 is connected between two ends of the thermistor NTC. Preferably, one end of the water level switch body, which is close to the floating ball, is provided with a baffle plate for limiting the travel of the floating ball, and the other end of the water level switch body is provided with a fixed limiting part for limiting the travel of the floating ball. Preferably, the fixed limiting part is formed with a threaded section, is provided with a flat pad sleeved with the threaded section, and is provided with a nut in threaded connection with the threaded section. Preferably, the other end of the water level switch body is provided with a cable electrically connected with the circuit board, and a terminal electrically connected with the cable. Compared with the prior art, the Hall type water level switch has the advantages that the Hall type proximity switch can be simplified from an original three-wire wiring mode to a two-wire wiring mode, the requirement of electronic products can be met, the trouble that a circuit is modified to be connected with the Hall switch is avoided, the Hall type water level switch can be directly introduced into the original two-wire circuit by the product, the circuit is not changed, and manpower and material resources are greatly saved. Additional aspects and advantages of the utility model 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 the utility model. Drawings In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art. Fig. 1 is a