Liquid level detection device

Abstract

The utility model relates to the technical field of liquid level detection, in particular to a liquid level detection device which comprises an inspection robot, a mechanical arm assembly, a code scanning camera and a radar detection unit. A control module, a positioning unit, a power supply unit and a communication unit are integrally arranged in the vehicle body, the positioning unit, the power supply unit and the communication unit are electrically connected with the control module, the mechanical arm assembly is arranged on a base at the top of the vehicle body and comprises a plurality of movable arms connected in sequence, and the tail end of the tail movable arm is rotationally connected with a connecting sleeve; a radar detection unit is installed on the side wall of the connecting sleeve, one end of the connecting sleeve is connected with a code scanning camera, the code scanning camera and the radar detection unit are both arranged downwards, the axis of the code scanning camera and the axis of the radar detection unit are parallel and perpendicular to the axis of the connecting sleeve, and non-contact accurate measurement of the liquid level can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid level detection technical field, concretely is a liquid level detection device. BACKGROUND

[0002] Liquid level detection is an important measurement technology applied in industrial processes, used for detecting the liquid level height of liquid in containers or storage tanks. Accurate liquid level measurement is crucial for process control, inventory management, equipment protection and production efficiency.

[0003] Currently, for liquid like white wine, liquid level detection during storage mainly includes contact detection and non-contact detection. Contact liquid level detection includes mechanical measurement method, float liquid level meter measurement method and magnetic flap liquid level meter measurement method. These methods need to place the detection equipment in the measured liquid for measurement, which can cause liquid pollution and food safety problems, and cannot guarantee measurement accuracy.

[0004] Non-contact liquid level detection commonly uses laser sensors for photoelectric measurement. This method does not need to be in direct contact with the liquid, and has high measurement accuracy, but has high requirements for equipment installation and equipment irradiation angle. At the same time, the measurement process also needs to be detected with the cover open, which can affect the quality of the stored liquid.

[0005] In addition, each measurement of the stored liquid level currently needs to be assisted by professional measurement personnel, and cannot achieve non-destructive testing and real-time monitoring. Only by reducing the measurement frequency can the damage to the quality of the liquid be reduced. INVENTION CONTENTS

[0006] The utility model provides a liquid level detection device.

[0007] The utility model technical scheme is as follows:

[0008] A liquid level detection device, comprising a patrol robot, a mechanical arm assembly, a code scanning camera and a radar detection unit. The patrol robot comprises a moving structure, a chassis and a vehicle body fixedly connected from bottom to top. The vehicle body is integrated with a control module, a positioning unit, a power supply unit and a communication unit. The positioning unit, the power supply unit and the communication unit are electrically connected with the control module,

[0009] The mechanical arm assembly is arranged on a base on the top of the vehicle body, and comprises a plurality of movable arms connected in sequence, a connecting sleeve rotatably connected to the end of the last movable arm, a radar detection unit mounted on the side wall of the connecting sleeve, and a code scanning camera connected to one end of the connecting sleeve, wherein the code scanning camera and the radar detection unit are arranged downward, the axes of the code scanning camera and the radar detection unit are parallel and perpendicular to the axis of the connecting sleeve, and a telescopic cylinder is connected between the side wall of the radar detection unit and the last movable arm, wherein the last movable arm, the telescopic cylinder and the radar detection unit are coplanar.

[0010] The mechanical arm assembly, the telescopic cylinder, the code scanning camera and the radar detection unit are electrically connected with the control module.

[0011] Specifically, the movable arm is provided with two sections, the first movable arm is connected to the vehicle body, the first movable arm is rotatably connected to the second movable arm, and the length of the first movable arm is greater than that of the second movable arm.

[0012] Further, the telescopic cylinder is arranged below the last movable arm.

[0013] Preferably, the radar detection unit is arranged at the middle of the side wall of the connecting sleeve.

[0014] Preferably, the bottom surfaces of the code scanning camera and the radar detection unit are coplanar, and the vertical distance between the bottom surfaces and the axis of the connecting sleeve is equal.

[0015] Preferably, the moving structure is a track.

[0016] Specifically, the positioning unit comprises a GPS positioning chip, a gyroscope and an acceleration sensor, and is electrically connected with the control module.

[0017] Further, a storage unit electrically connected with the control module is further included and is integrally arranged in the inspection robot.

[0018] Specifically, a motor driver and a motor are arranged on the chassis, the motor is electrically connected to the motor driver, and the motor driver and the control module are electrically connected.

[0019] Preferably, a display unit in communication connection with the control module is further included, and the display unit is an RGB LED screen or an LCD screen.

[0020] The beneficial effects of the utility model lie in:

[0021] (1) The utility model discloses a liquid level detection device, which is automatically navigated by the inspection robot to automatically inspect in all time periods, without manual intervention, and improves the detection efficiency.

[0022] (2) Set up a radar detection unit, the generated millimeter wave signal can penetrate the storage medium to detect the liquid level of the liquid, without contacting the measured liquid, also without opening the cover to measure, while ensuring the measurement accuracy, avoid pollution to the measured liquid. BRIEF DESCRIPTION OF DRAWINGS

[0023] The solutions and advantages of the present application will become clear to those ordinarily skilled in the art from the following detailed description of the preferred embodiments. The drawings are merely provided for the purpose of illustrating the preferred embodiments, and are not considered as limiting the present application.

[0024] In the drawings:

[0025] Figure 1 It is a system structure schematic diagram of a liquid level detection device in the embodiment;

[0026] Figure 2 It is a structure schematic diagram of a liquid level detection device in the embodiment;

[0027] Figure 3 It is a radar liquid level detection principle schematic diagram in the embodiment;

[0028] The components represented by the respective reference numerals in the drawings are:

[0029] 1, inspection robot; 2, mechanical arm assembly; 3, radar detection unit; 4, code scanning camera; 5, moving structure; 6, vehicle body. DETAILED DESCRIPTION

[0030] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0031] EMBODIMENT

[0032] The present embodiment provides a liquid level detection device, referring to Figure 1 , comprising an inspection robot, a mechanical arm assembly, a code scanning camera, and a radar detection unit, the inspection robot comprising a moving structure, a chassis and a vehicle body fixedly connected from bottom to top, a control module, a positioning unit, a power supply unit and a communication unit are integrally arranged in the vehicle body, the positioning unit, the power supply unit and the communication unit are electrically connected with the control module,

[0033] The mechanical arm assembly is arranged on the base at the top of the vehicle body, comprising a plurality of movable arms connected in sequence, a connecting sleeve is rotatably connected to the end of the last movable arm, the radar detection unit is mounted on the side wall of the connecting sleeve, the code scanning camera is connected to one end of the connecting sleeve, the code scanning camera and the radar detection unit are both arranged downward, the axes of the code scanning camera and the radar detection unit are parallel and perpendicular to the axis of the connecting sleeve, a telescopic cylinder is connected between the side wall of the radar detection unit and the last movable arm, the last movable arm, the telescopic cylinder and the radar detection unit are coplanarly arranged;

[0034] The mechanical arm assembly, telescopic cylinder, code scanning camera and radar detection unit are electrically connected with the control module.

[0035] In the utility model, the control module is the brain of the whole liquid level detection device, is integratively arranged in the inspection robot, is electrically connected with other each functional unit through the bus or communication interface, is responsible for the work of other each functional unit, carries out data processing and sends control instruction, and the control module includes central processing unit (CPU), memory (RAM and ROM) and input output interface.

[0036] The inspection robot is used for receiving the instruction of the control module, carries the code scanning camera and the radar detection unit, moves in the detection area, and inspects the liquid level of the liquid. The inspection robot includes the moving structure, chassis and vehicle body which are fixedly connected from bottom to top, the moving structure is the track in the utility model, the chassis is used for bearing various modules and units, and the vehicle body constitutes the supporting part of the inspection robot. The inspection robot further includes the motor driver and motor which are arranged on the chassis, the motor is electrically connected to the motor driver, and the motor driver and the control module are electrically connected. The motor driver is used for driving the rotation of the motor, the motor is the power source of the inspection robot, receives the signal of the control module through the motor driver, and drives the inspection robot to advance, retreat and rotate.

[0037] The mechanical arm assembly is used for adjusting the position and angle of the code scanning camera and the radar detection unit connected therewith, is arranged on the base at the top of the vehicle body, includes a plurality of movable arms which are connected in sequence, and the end of the last movable arm is rotatably connected with the connecting sleeve. The radar detection unit is installed on the side wall of the connecting sleeve, and the code scanning camera is connected to one end of the connecting sleeve. The mechanical arm assembly can receive the signal instruction of the control module and move in multiple dimensions in space. The radar detection unit is installed on the side wall of the connecting sleeve, and the code scanning camera is connected to one end of the connecting sleeve. The mutual interference between devices can be avoided, different devices can work relatively independently, and the measurement accuracy can be ensured.

[0038] In the utility model, the movable arm is provided with two sections, the first movable arm is connected with the vehicle body, the first movable arm is rotatably connected with the second movable arm, the length of the first movable arm is greater than that of the second movable arm, the first movable arm is provided to be longer to provide greater support and ensure that a larger detection area is covered. The second movable arm swings and rotates relative to the first movable arm and is used for finely adjusting and positioning the code scanning camera and the radar detection unit connected therewith. The first movable arm and the second movable arm cooperate with each other and can adapt to detection scenes of different heights, especially for large liquid storage tanks, to provide greater measurement travel.

[0039] The radar detection unit is used for penetrating measurement of the liquid level of the liquid, and the radar detection unit comprises an oscillator, a microwave transmitting circuit, a power amplifier and an antenna which are electrically connected in sequence, and the oscillator is electrically connected with the control module. The oscillator is used as a signal source to generate a high-frequency millimeter wave signal, and the signal is transmitted from the antenna after passing through the microwave transmitting circuit and the power amplifier in sequence, and the signal reflected back is transmitted to the control module through the antenna. When detecting the liquid level, the radar detection unit is arranged at a fixed height, and the millimeter wave signal generated by the radar detection unit penetrates the wood cover to reach the liquid surface to obtain a measurement distance h1; part of the signal is projected on the wood cover to obtain a distance h2 from the device to the wood cover, and the value of the liquid level gap can be accurately obtained by further calculating h1-h2 through a simple formula. A telescopic cylinder is connected between the side wall of the radar detection unit and the last movable arm, and the radar detection unit is arranged in the same plane with the telescopic cylinder and the last movable arm to ensure accurate and stable detection of the liquid level.

[0040] The radar detection unit is arranged on the side wall of the connecting sleeve and downwardly, and is arranged in the middle of the side wall of the connecting sleeve, so that the radar detection unit has higher stability during detection, improves the measurement accuracy, and has a wider view angle.

[0041] The telescopic cylinder is arranged below the last movable arm, can provide support for the radar detection unit, reduces the shaking of the radar detection unit caused by external force, and the telescopic cylinder can also receive instructions from the control module to adjust the angle of the radar detection unit to adapt to different detection scenes.

[0042] The code scanning camera and the radar detection unit are both arranged downwardly, can measure the liquid to be measured located below within a small range of movement, the axes of the code scanning camera and the radar detection unit are parallel and arranged perpendicularly to the axis of the connecting sleeve, which ensures the detection effect and improves the convenience of detection operation. The bottom surfaces of the code scanning camera and the radar detection unit are arranged in the same plane, and the vertical distance between the bottom surfaces and the axis of the connecting sleeve is equal, so that the detection view angle is not interfered by the structures of the code scanning camera and the radar detection unit during code scanning detection and radar detection.

[0043] The positioning unit is used for determining the accurate position of the inspection robot, and comprises a GPS positioning chip, a gyroscope and an acceleration sensor which are electrically connected with the control module. The GPS positioning chip receives signals from GPS satellites to obtain the precision and dimension information of the inspection robot; the gyroscope is used for monitoring the rotational angular velocity and rotational direction of the inspection robot during movement and inspection; and the acceleration sensor is used for monitoring and obtaining the acceleration data of the inspection robot moving in a specific direction, and is used for positioning in an environment without GPS signals.

[0044] The code scanning camera is used for reading the bar code or the two-dimensional code on the storage medium such as the pottery jar, so as to identify each pottery jar and record the liquid level data thereof. The code scanning camera is arranged at one end of the connecting sleeve and is arranged downwardly. The code scanning camera comprises an image processing circuit, a CCD image sensor and a lens which are electrically connected in sequence. The image processing circuit is electrically connected to the control module. Before the radar detection unit is positioned above the liquid to detect the liquid level, the mechanical arm assembly receives the instruction of the control module, adjusts the rotation of the movable arm, so that the lens is first aligned with the bar code or the two-dimensional code to be scanned, focuses the light on the CCD image sensor, the CCD image sensor receives the light signal and converts it into an analog signal which is transmitted to the image processing circuit, and the image processing circuit transmits the processed signal data to the control module.

[0045] The communication unit is used for realizing the communication between the liquid level detection device and the remote control center. The communication unit comprises a wireless communication chip and a communication antenna which are electrically connected. The wireless communication chip is electrically connected to the control module. The wireless communication chip is used for processing the signal under the instruction of the control module. The communication antenna is used for transmitting the processed signal and interacting with the remote control center.

[0046] The power supply unit is used for providing power for the whole device. The power supply unit comprises a lithium battery and a battery management chip which are electrically connected. The battery management chip is electrically connected to the control module. The battery management chip is used for controlling the charging and discharging of the lithium battery under the instruction of the control module.

[0047] The storage unit which is electrically connected to the control module is also included and is integrally arranged in the inspection robot. The storage unit can be a common solid state disk, a read-only memory and a random access memory.

[0048] The utility model also comprises a display unit which is in communication connection with the control module. The display unit is an RGB LED screen or an LCD screen and is used for displaying the running state and the inspection information of the liquid level detection device in real time.

Claims

1. A liquid level detection device, characterized in that: The system includes an inspection robot, a robotic arm assembly, a barcode scanning camera, and a radar detection unit. The inspection robot includes a mobile structure, a chassis, and a body fixedly connected from bottom to top. A control module, a positioning unit, a power supply unit, and a communication unit are integrated in the body. The positioning unit, the power supply unit, and the communication unit are all electrically connected to the control module. The mechanical arm assembly is arranged on a base on the top of the vehicle body, and includes several movable arms connected in sequence. The end of the last movable arm is rotatably connected to a connecting sleeve. A radar detection unit is installed on the side wall of the connecting sleeve. A code scanning camera is connected to one end of the connecting sleeve. The code scanning camera and the radar detection unit are both arranged downward. The axes of the code scanning camera and the radar detection unit are parallel and perpendicular to the axis of the connecting sleeve. A telescopic cylinder is connected between the side wall of the radar detection unit and the last movable arm. The last movable arm, the telescopic cylinder and the radar detection unit are arranged coplanarly. The robotic arm assembly, telescopic cylinder, code scanning camera and radar detection unit are all electrically connected to the control module.

2. A liquid level detection device according to claim 1, characterized in that: The movable arm is provided with two sections. The first movable arm is connected to the vehicle body. The first movable arm is rotatably connected to the second movable arm, and the length of the first movable arm is greater than that of the second movable arm.

3. A liquid level detection device according to claim 1, characterized in that: The telescopic cylinder is arranged below the last movable arm.

4. A liquid level detection device according to claim 1, characterized in that: The radar detection unit is arranged in the middle of the side wall of the connecting sleeve.

5. The liquid level detection device according to claim 1, characterized in that: The bottom surfaces of the code scanning camera and the radar detection unit are arranged on the same plane, and the vertical distances between their bottom surfaces and the axis of the connecting sleeve are equal.

6. A liquid level detection device according to claim 1, characterized in that: The mobile structure is a crawler.

7. The liquid level detection device according to claim 1, characterized in that: The positioning unit includes a GPS positioning chip, a gyroscope and an acceleration sensor, all of which are electrically connected to the control module.

8. The liquid level detection device according to claim 1, characterized in that: It also includes a storage unit electrically connected to the control module and integrated into the inspection robot.

9. The liquid level detection device according to claim 1, characterized in that: The inspection robot further includes a motor driver and a motor arranged on the chassis, the motor is electrically connected to the motor driver, and the motor driver is electrically connected to the control module.

10. The liquid level detection device according to claim 1, characterized in that: It also includes a display unit that is communicatively connected to the control module, and the display unit is an RGB LED screen or an LCD screen.

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