CN213209198U

CN213209198U - Excrement collector with liquid level sensor

Info

Publication number: CN213209198U
Application number: CN202021091916.XU
Authority: CN
Inventors: 周兆
Original assignee: Shanghai Zhiqiu Technology Co ltd
Current assignee: Shanghai Zhiqiu Technology Co ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-05-14
Anticipated expiration: 2030-06-12

Abstract

The utility model discloses a feces collector with a liquid level sensor, which comprises a metal box body, wherein a skin-seeking layer is arranged on the outer wall of the metal box body; the skin-seeking layer is provided with an EMAT probe sensor, and the EMAT probe sensor comprises an EMAT probe and a rear-end signal processor; the EMAT probe is in signal connection with the rear-end signal processor and is in contact with the skin-seeking layer. The utility model discloses an adopt the non-contact installation, installed probe sensor at the metal box outer wall of excrement collector, need not at the tank wall trompil, inside sewage of contactless box and filth do not receive its influence sensor work promptly, also can the accurate detection excrement collector liquid level.

Description

Excrement collector with liquid level sensor

Technical Field

The utility model relates to a level sensor's technical field especially relates to a non-contact level sensor for on transportation trade collection stool pot.

Background

The existing excrement collector adopts two types of contact type liquid level sensors which are directly inserted into a box body. As shown in fig. 1, sewage 4 is filled in a metal box body 1, dirt 5 floats in the sewage 4, two contact type liquid level sensors are inserted into the metal box body 1, and one type is a floating ball type liquid level sensor 3 (the liquid level height is displayed by the movement of a floating ball under the action of buoyancy); the other is a capacitance type liquid level sensor 2 (liquid level height is determined by detecting the capacitance value at the front part of the probe).

The floating ball type sensor 3 determines that a floating ball of the floating ball type sensor needs to move under the action of buoyancy in liquid according to the principle, so that the liquid in the metal box body 1 of the excrement collector shakes, the floating ball is heavier due to the attachment of dirt 5 floating in the liquid to the floating ball, the floating ball cannot float normally due to the buoyancy, the floating ball is easily blocked due to the winding of the dirt 5 floating in the liquid to the floating ball, the floating ball cannot move correctly due to the phenomena, the liquid level height is displayed incorrectly, and the like, so that misoperation is generated.

The probe of the capacitive sensor 2 is directly contacted with liquid and detects the capacitance value, dirt in the excrement collector tank is easily attached to the inner wall of the tank and the probe, and the capacitance value measured at the front end of the capacitive probe is the sum of the real capacitance and the dirt attached capacitance, namely the real capacitance cannot be judged, namely misoperation is generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can accurate non-contact level sensor who detects the liquid level on the excrement collector.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a feces collector with a liquid level sensor comprises a metal box body, wherein a skin-seeking layer is arranged on the outer wall of the metal box body; the skin-seeking layer is provided with an EMAT probe sensor, and the EMAT probe sensor comprises an EMAT probe and a rear-end signal processor; the EMAT probe is in signal connection with the rear-end signal processor and is in contact with the skin-seeking layer.

Preferably, the EMAT probe comprises a permanent magnet and a high frequency coil.

Preferably, the EMAT probe sensor is fixedly arranged on the outer wall of the metal box body in an adhesive mode.

Preferably, the metal box body is made of steel.

The utility model discloses an adopt the non-contact installation, installed probe sensor at the metal box outer wall of excrement collector, need not at the tank wall trompil, inside sewage of contactless box and filth do not receive its influence sensor work promptly, also can the accurate detection excrement collector liquid level.

Drawings

FIG. 1 is a schematic view of the installation position and working principle of a liquid level sensor used on a conventional toilet;

fig. 2 is a schematic view of the actual installation position and the working principle of the present invention (no water state);

fig. 3 is a schematic view of the actual installation position and the working principle of the present invention (water state).

Reference numbers in the figures:

1. a metal box body; 2. a capacitive sensor; 3. a floating ball type sensor; 4. sewage; 5. (ii) a soil; 6. an EMAT probe sensor; 7. a back-end signal processor; 8. a permanent magnet; 9. a high-frequency coil; 10. a skin-seeking layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

As shown in fig. 2 and 3, for the toilet stool with a liquid level sensor provided by the present invention, the toilet stool comprises a metal box body 1, wherein the metal box body 1 is made of steel, and a skin-seeking layer 10 is arranged on the outer wall of the metal box body 1; the skin seeking layer 10 is provided with an EMAT probe sensor 6, a non-contact electromagnetic Acoustic transducer (EMAT) probe liquid level sensor is directly fixed on the outer wall of the metal box body 1 of the excrement collector by adopting an adhesive method, and the EMAT probe sensor 1 does not need to be contacted with sewage and dirt in the box body; the EMAT probe sensor 1 comprises a high frequency coil 9, a permanent magnet 8 and a back end signal processor 7. The EMAT probe composed of the high-frequency coil 9 and the permanent magnet 8 is used for transmitting and receiving ultrasonic waves, the EMAT probe is in signal connection with the rear-end signal processor 7, and the rear-end signal processor 7 identifies, compares, amplifies and converts the acquired ultrasonic signals to output liquid level signals.

Further, the EMAT probe sensor 6 is fixedly arranged on the outer wall of the metal box body 1 in an adhesive mode.

The utility model discloses the working process is: the EMAT probe in the sensor and the skin layer 10 on the wall of the metal box body 1 of the toilet are excited to generate ultrasonic waves under the action of a strong magnetic field, then the EMAT probe receives reflected ultrasonic signals, and whether the ultrasonic wave propagation process can generate a total reflection phenomenon is mainly determined according to whether the water level in the box body reaches the same height of the installation position of the sensor (namely whether water exists on the ultrasonic wave propagation path), so that the ultrasonic wave propagation process cannot be damaged by the interferences of dirt adhesion in the toilet, sewage shaking and the like. The rear end signal processor 7 compares the intensity of the transmitted and received ultrasonic waves, and can distinguish whether water solution exists on a contour line of the position where the sensor is installed according to the difference value, so that an accurate liquid level signal is output.

The utility model relates to a contactless installation, get rid of inside sewage of collection stool pot, filth to the various interferences (such as rock among the prior art, adhere to, twine the scheduling problem), the utility model discloses an operating principle utilizes the ultrasonic wave to propagate between two kinds of different Z (acoustic impedance) media, as shown in figure 2, if the acoustic impedance of two kinds of media differed greatly (such as Z steel > > Z air), the ultrasonic wave will take place the total reflection, the ultrasonic energy that the probe received and the ultrasonic energy that takes place are basically the same; as shown in fig. 3, if the acoustic impedances of the two media are not much different (Z steel > Z water), the transmission phenomenon of the ultrasonic wave occurs, the ultrasonic wave passes through the media, and the energy is lost, i.e. the ultrasonic energy received by the probe is much smaller than the ultrasonic energy emitted.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A feces collector with a liquid level sensor comprises a metal box body (1), and is characterized in that a skin-seeking layer (10) is arranged on the outer wall of the metal box body (1); the skin-seeking layer (10) is provided with an EMAT probe sensor (6), and the EMAT probe sensor (6) comprises an EMAT probe and a rear-end signal processor (7); the EMAT probe is in signal connection with the rear-end signal processor (7), and is in contact with the skin-seeking layer (10).

2. The waste collection device with a liquid level sensor according to claim 1, wherein the EMAT probe comprises a permanent magnet (8) and a high frequency coil (9).

3. The excrement collector with a liquid level sensor according to claim 1, wherein said EMAT probe sensor (6) is fixed on the outer wall of the metal tank (1) by gluing.

4. The toilet stool with a liquid level sensor according to claim 1, wherein the metal box (1) is made of steel.