Liquid level meter based on laser ranging

Abstract

The utility model discloses a liquid level meter based on laser ranging, which belongs to the technical field of liquid level meters, and comprises a shell, an external thread pipe is fixedly connected outside the shell, a laser range finder is mounted inside the external thread pipe, a mainboard is mounted inside the shell, and the mainboard is fixedly connected with the shell. The main board is provided with a microprocessor, a signal processor and a wireless signal transmitter, the laser range finder is in signal connection with the microprocessor, and the microprocessor is in signal connection with the signal processor and the wireless signal transmitter. An external threaded pipe can be directly connected and installed on a threaded connecting pipe at the top of the tank, a flange plate is not arranged or connected to the external threaded pipe, the flange plate is connected with a flange connecting plate at the top of the tank, various installation modes are achieved, and the wireless signal transmitter can be in signal connection with a host. Therefore, data can still be read when the data wiring is damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level meters, in particular to a liquid level meter based on laser distance measurement. Background Art

[0002] Common liquid level measurement systems can be divided into two types: contact type and non-contact type. Contact type includes manual gauge and float type, while non-contact type includes radar type, ultrasonic type and laser type. Compared with traditional float type and manual gauge method, radar type, ultrasonic type and laser type have considerable advantages in technical content and measurement accuracy.

[0003] The existing laser liquid level measurement system is usually limited to one installation connection method when in use, and cannot provide corresponding installation forms according to different installation requirements, which is inconvenient to use. In addition, linear connection is usually used for data transmission. When the online connection is damaged, the data signal cannot be wirelessly transmitted to the host, delaying the reading of the liquid level. Therefore, a liquid level meter based on laser ranging is proposed. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, one purpose of the utility model is to propose a liquid level meter based on laser ranging, which can be installed in multiple ways and can be connected to a host computer through a wireless signal transmitter, so that data can still be read when the data wiring is damaged.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a liquid level meter based on laser ranging, comprising a shell, the outside of the shell is fixedly connected to an externally threaded pipe, a laser rangefinder is installed inside the externally threaded pipe, a mainboard is installed inside the shell, a microprocessor, a signal processor and a wireless signal transmitter are installed on the mainboard, the laser rangefinder is signal-connected to the microprocessor, the microprocessor is signal-connected to the signal processor and the wireless signal transmitter, and the external thread of the externally threaded pipe is connected to a flange.

[0007] Preferably, a rubber gasket is bonded to the bottom of the flange.

[0008] Preferably, a wiring module is installed outside the housing, and the wiring module is electrically connected to the signal processor.

[0009] Preferably, a display screen is installed outside the housing, and the display screen is connected to the microprocessor signal.

[0010] Preferably, a battery module is installed outside the main board, and an electrical output end of the battery module is electrically connected to an electrical input end of the main board, the display screen, and the laser rangefinder.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model can be installed on the threaded connecting pipe on the tank top by directly connecting with an external threaded pipe according to installation requirements, without configuring a flange, or configuring a flange to be connected to the external threaded pipe, and connecting the flange to the flange connecting plate on the tank top, thereby realizing a variety of installation methods, and can connect signals with the host through a wireless signal transmitter, so that data can still be read when the data wiring is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a liquid level meter based on laser ranging of the utility model;

[0014] Figure 2 It is a structural schematic diagram of a rubber gasket in a liquid level meter based on laser ranging of the utility model;

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the shell of the liquid level meter based on laser ranging of the present utility model.

[0016] In the figure: 1. Shell; 2. Wiring module; 3. External threaded pipe; 4. Flange; 5. Display screen; 6. Laser rangefinder; 7. Rubber gasket; 8. Main board; 9. Microprocessor; 10. Signal processor; 11. Battery module; 12. Wireless signal transmitter. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-Figure 3The embodiment of the utility model provides a liquid level meter based on laser ranging, including: a shell 1, an external threaded tube 3 is fixedly connected to the outside of the shell 1, a laser rangefinder 6 is installed inside the external threaded tube 3, a mainboard 8 is installed inside the shell 1, a microprocessor 9, a signal processor 10 and a wireless signal transmitter 12 are installed on the mainboard 8, the laser rangefinder 6 is connected to the microprocessor 9 by signal, the microprocessor 9 is connected to the signal processor 10 and the wireless signal transmitter 12 by signal, a flange 4 is connected to the external thread of the external threaded tube 3, a display screen 5 is installed outside the shell 1, the display screen 5 is connected to the microprocessor 9 by signal, a battery module 11 is installed outside the mainboard 8, and the electrical output end of the battery module 11 is electrically connected to the electrical input end of the mainboard 8, the display screen 5 and the laser rangefinder 6.

[0019] When in use, according to installation requirements, the external threaded pipe 3 can be directly installed on the threaded connecting pipe on the tank top without configuring the flange 4, or the flange 4 can be configured and connected to the external threaded pipe 3, and the flange 4 is connected to the flange connecting plate on the tank top to complete the installation.

[0020] After the installation is completed, the laser rangefinder 6 first measures the distance before water is filled, and the microprocessor 9 records the distance from the laser emitting end of the laser rangefinder 6 to the bottom of the tank body as the initial length. After water is filled, the laser rangefinder 6 measures the distance and measures the distance from the laser emitting end of the laser rangefinder 6 to the water surface. The microprocessor 9 subtracts the length value measured this time from the initial length value to obtain the accurate value of the liquid level, and displays it on the display screen 5. The wireless signal transmitter 12 can be connected to the host for signal connection, so that data can still be read when the data wiring is damaged.

[0021] In order to facilitate the data connection of the host, a wiring module 2 is installed outside the housing 1, and the wiring module 2 is electrically connected to the signal processor 10.

[0022] In order to achieve a sealing and leak-proof effect when the flange 4 is connected by flange, a rubber gasket 7 is bonded to the bottom of the flange 4 .

[0023] According to the above technical scheme, the working steps of this scheme are summarized and sorted out: when in use, according to the installation requirements, the external threaded pipe 3 can be used to be directly installed on the threaded connecting pipe on the top of the tank, without configuring the flange 4, or the flange 4 can be configured and connected to the external threaded pipe 3, and the flange 4 is connected to the flange connecting plate on the top of the tank to complete the installation. After the installation is completed, the laser rangefinder 6 first measures the distance before water is filled, and the microprocessor 9 records the distance from the laser emitting end of the laser rangefinder 6 to the bottom of the tank body as the initial length. After water is filled, the laser rangefinder 6 measures the distance and measures the distance from the laser emitting end of the laser rangefinder 6 to the water surface. The microprocessor 9 subtracts the length value measured this time from the initial length value to obtain the accurate value of the liquid level, and displays it through the display screen 5. The wireless signal transmitter 12 can be connected to the host for signal connection, so that data can still be read when the data wiring is damaged.

[0024] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A liquid level meter based on laser ranging, comprising a housing (1), characterized in that: The outer part of the housing (1) is fixedly connected to an external threaded tube (3), the inner part of the external threaded tube (3) is equipped with a laser rangefinder (6), the inner part of the housing (1) is equipped with a mainboard (8), the mainboard (8) is equipped with a microprocessor (9), a signal processor (10) and a wireless signal transmitter (12), the laser rangefinder (6) is signal-connected to the microprocessor (9), the microprocessor (9) is signal-connected to the signal processor (10) and the wireless signal transmitter (12), and the outer thread of the external threaded tube (3) is connected to a flange (4).

2. A liquid level meter based on laser ranging according to claim 1, characterized in that: A rubber gasket (7) is bonded to the bottom of the flange (4).

3. A liquid level meter based on laser ranging according to claim 1, characterized in that: A wiring module (2) is installed outside the housing (1), and the wiring module (2) is electrically connected to the signal processor (10).

4. A liquid level meter based on laser ranging according to claim 1, characterized in that: A display screen (5) is installed outside the housing (1), and the display screen (5) is signal-connected to the microprocessor (9).

5. A liquid level meter based on laser ranging according to claim 4, characterized in that: A battery module (11) is installed outside the main board (8), and an electrical output end of the battery module (11) is electrically connected to an electrical input end of the main board (8), the display screen (5), and the laser rangefinder (6).

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