Weighing sensor verification device

Abstract

The utility model discloses a weighing sensor verification device in the related technical field of sensor verification, which comprises a box body and a control box connected with the box body, the bottom of the box body is fixedly connected with the control box, the control box is internally and fixedly connected with a guide frame, the guide frame is sleeved with a protection plate, and the protection plate is fixedly connected with the control box. A sensor to be tested is placed between the two protection plates, and a standard sensor is arranged on the side, away from the sensor to be tested, of each protection plate. According to the utility model, through the design of the protection plate and the guide frame, the protection plate can be limited, so that the pressurized force is uniformly transmitted to the sensor to be detected and the standard sensor, the data deviation caused by non-uniform pressure is reduced, and the practicability is stronger; the experimental temperature of the box body can be accurately controlled, verification data is prevented from being influenced by environmental factors, meanwhile, the device is suitable for different environment occasions, the application range of the device is widened, and the economical efficiency is good.

Description

Technical Field

[0001] The utility model belongs to the technical field related to sensor calibration, and specifically relates to a weighing sensor calibration device. Background Art

[0002] A digital weighing sensor (referred to as a sensor for short) is a new type of electronic weighing sensor based on a traditional resistive strain gauge sensor, combining microelectronics technology and a microcomputer. Its internal resistor element deforms under the gravity of the object being measured, and this deformation is converted into an electrical signal through a circuit, and then into a digital signal. The existing calibration method uses the same pressurizing device to simultaneously pressurize the sensor being tested and a standard sensor, and then determines whether the sensor being tested is out of tolerance by comparing the two. Uneven pressurization can easily cause vertical deviations between the two sensors, affecting the calibration results. It is also impossible to detect whether the pressurizing device has deformed, and the calibration results are affected by the deformation of the pressurizing device.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a weighing sensor calibration device. To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0005] A weighing sensor calibration device includes a box body and a control box connected thereto, the control box being fixedly connected to the bottom of the box body, a guide frame being fixedly connected inside the control box, a protective plate being sleeved on the guide frame, a sensor to be tested being placed between the two protective plates, a standard sensor being provided on the side of the protective plate away from the sensor to be tested, a temperature sensor and a humidity sensor being fixedly connected inside the box body, a pressurized cylinder being fixedly connected to the top of the box body, an output end of the pressurized cylinder being connected to one of the protective plates, a box door being rotatably connected to the box body, the guide frame serving as a guide, the temperature sensor and the humidity sensor being convenient for detecting the temperature and humidity inside the box body, and the pressurized cylinder providing pressurized power for the device.

[0006] As a further solution of the present invention: the control box is connected to an industrial computer via a data cable, and the industrial computer is provided with a display and a keyboard and mouse set. Through the above design, it is convenient to view the detection data, and the human-computer interaction performance is good.

[0007] As a further solution of the present invention: air guide covers are provided on both sides of the box body, the air guide covers are connected to the box body, and a guide pipe is provided at the other end of the air guide covers. The air guide covers are made of sheet metal, and the air guide covers and the guide pipe play a role of guiding air.

[0008] As a further solution of the present invention: one end of the guide pipe away from the air guide cover is connected to the input end of the exhaust fan, the output end of the exhaust fan is connected to the exhaust pipe, and the other end of the exhaust pipe is provided with a dehumidification box. The exhaust fan provides air exchange power for the device, the exhaust pipe plays a role of guiding air, and the dehumidification box facilitates dehumidification of the air.

[0009] As a further solution of the present invention: a dehumidification valve is provided on the exhaust pipe, an exhaust branch pipe is provided on one side of the exhaust pipe, and an exhaust valve is provided on the exhaust branch pipe. The dehumidification valve is convenient for controlling the opening and closing of the exhaust pipe, and the exhaust valve is convenient for controlling the opening and closing of the exhaust branch pipe.

[0010] As a further solution of the present invention: the output end of the dehumidification box and the end of the exhaust branch pipe away from the exhaust pipe are both connected to the connecting pipe, and a temperature control box is provided at the other end of the connecting pipe. The output end of the temperature control box is connected to the guide pipe, and the connecting pipe plays a role of guide, and the temperature control box is convenient for adjusting the temperature of the air.

[0011] As a further solution of the present invention: an air pump box is provided on one side of the dehumidification box, a water pump is provided on one side of the temperature control box, the output end of the water pump is connected to the connecting pipe through a humidifying pipe, a humidifying valve is provided on the humidifying pipe, and a water inlet pipe is provided on the input end of the water pump. The air pump box provides high-pressure gas for the device, and the humidifying valve facilitates controlling the opening and closing of the humidifying pipe.

[0012] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art.

[0013] The utility model can limit the protective plate through the design of the protective plate and the guide frame, so that the pressurized force is evenly transmitted to the sensor to be tested and the standard sensor, reducing the data deviation caused by uneven pressure and having strong practicality.

[0014] The utility model can accurately control the experimental temperature of the box through the temperature sensor and the humidity sensor, avoiding the influence of environmental factors on the calibration data, and also makes the device suitable for different environmental occasions, thereby improving the application range of the device and being more economical.

[0015] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are part of this application and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is the main view of the utility model;

[0019] Figure 3 This is a rear view of the box body of the present utility model;

[0020] Figure 4 It is a top view of the box body of the present utility model.

[0021] In the figure: 1. Box body; 2. Pressurized cylinder; 3. Display; 4. Industrial computer; 5. Keyboard and mouse set; 6. Box door; 7. Control box; 8. Air guide hood; 9. Diversion pipe; 10. Exhaust fan; 11. Protective plate; 12. Standard sensor; 13. Data cable; 14. Guide frame; 15. Sensor to be tested; 16. Humidity sensor; 17. Temperature sensor; 18. Connecting pipe; 19. Humidification pipe; 20. Water inlet pipe; 21. Water pump; 22. Humidification valve; 23. Exhaust pipe; 24. Dehumidification valve; 25. Dehumidification box; 26. Exhaust branch pipe; 27. Exhaust valve; 28. Air pump box; 29. Temperature control box.

[0022] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0024] like Figures 1 to 4As shown, a weighing sensor calibration device comprises a box body 1 and a control box 7 connected thereto, the control box 7 being fixedly connected to the bottom of the box body 1, a guide frame 14 being fixedly connected inside the control box 7, a protective plate 11 being sleeved on the guide frame 14, a sensor to be tested 15 being placed between the two protective plates 11, a standard sensor 12 being provided on the side of the protective plate 11 away from the sensor to be tested 15, a temperature sensor 17 and a humidity sensor 16 being fixedly connected inside the box body 1, a pressurizing cylinder 2 being fixedly connected to the top of the box body 1, an output end of the pressurizing cylinder 2 being connected to a protective plate 11, a box door 6 being rotatably connected to the box body 1, and a guide frame 14 serving as a guide, the temperature sensor 17 and the humidity sensor 16 being convenient for detecting the temperature and humidity inside the box body 1, and the pressurizing cylinder 2 providing pressurizing power for the device.

[0025] The control box 7 is connected to the industrial computer 4 via a data line 13 , and the industrial computer 4 is provided with a display 3 and a keyboard and mouse set 5 . The above design facilitates viewing of the detection data, and the human-computer interaction performance is good.

[0026] Wind guide covers 8 are provided on both sides of the box body 1. The wind guide covers 8 are connected to the box body 1. A guide pipe 9 is provided at the other end of the wind guide covers 8. The wind guide covers 8 are made of sheet metal. The wind guide covers 8 and the guide pipe 9 play a role in guiding air.

[0027] One end of a guide pipe 9 away from the wind guide cover 8 is connected to the input end of the exhaust fan 10, the output end of the exhaust fan 10 is connected to the exhaust pipe 23, and the other end of the exhaust pipe 23 is provided with a dehumidification box 25. The exhaust fan 10 provides air exchange power for the device, the exhaust pipe 23 plays a role in guiding air flow, and the dehumidification box 25 facilitates dehumidification of the air.

[0028] A dehumidification valve 24 is provided on the exhaust pipe 23, an exhaust branch pipe 26 is provided on one side of the exhaust pipe 23, and an exhaust valve 27 is provided on the exhaust branch pipe 26. The dehumidification valve 24 is convenient for controlling the opening and closing of the exhaust pipe 23, and the exhaust valve 27 is convenient for controlling the opening and closing of the exhaust branch pipe 26.

[0029] The output end of the dehumidification box 25 and the end of the exhaust branch pipe 26 away from the exhaust pipe 23 are both connected to the connecting pipe 18. A temperature control box 29 is provided at the other end of the connecting pipe 18. The output end of the temperature control box 29 is connected to the guide pipe 9. The connecting pipe 18 plays a role in guiding flow. The temperature control box 29 facilitates the adjustment of the air temperature.

[0030] An air pump box 28 is provided on one side of the dehumidification box 25, and a water pump 21 is provided on one side of the temperature control box 29. The output end of the water pump 21 is connected to the connecting pipe 18 through the humidifying pipe 19. A humidifying valve 22 is provided on the humidifying pipe 19, and a water inlet pipe 20 is provided on the input end of the water pump 21. The air pump box 28 provides high-pressure gas for the device, and the humidifying valve 22 facilitates the control of the opening and closing of the humidifying pipe 19.

[0031] The working principle of the utility model is as follows: when in use, the device is started through the control box 7, the box door 6 is opened, the sensor to be tested 15 is placed on the marked position on the protective plate 11 above the standard sensor 12, the box door 6 is closed and locked, the industrial computer 4 is started, the software interface of the device is opened through the keyboard and mouse set 5, the mouse clicks to start the pressurization function, the pressurization cylinder 2 drives the other protective plate 11 to move down, and when it contacts the sensor to be tested 15, it starts to pressurize. During the pressurization process, a guide frame 14 is provided on the protective plate 11, so that the end face of the protective plate 11 can be ensured to be aligned with the standard sensor 12. The connection surface of the sensor 12, the contact surface of the sensor to be tested 15 and the output end of the pressurizing cylinder 2 are all within a certain parallelism range, thereby ensuring the uniformity of the force applied by the pressurizing cylinder 2. During the pressurization process, the calibration environment can also be controlled according to the temperature and humidity signals detected by the temperature sensor 17 and the humidity sensor 16. When the humidity is too low, the exhaust fan 10, the water pump 21, the humidifying valve 22 and the exhaust valve 27 work, and the air in the box 1 is transported by the exhaust fan 10, passes through the exhaust pipe 23, the exhaust branch pipe 26, the connecting pipe 18, and the temperature control box 29, and then returns to the original state. When the air returns to the box body 1, when the air flows through the connecting pipe 18, the water pump 21 discharges water mist into the air to increase the air humidity. When the humidity is too high, the exhaust fan 10 and the dehumidification valve 24 work, and the air in the box body 1 is transported by the exhaust fan 10, passes through the exhaust pipe 23, the dehumidification box 25, the connecting pipe 18, and the temperature control box 29, and then returns to the box body 1. When the air flows through the dehumidification box 25, the humidity in the air decreases. When the temperature needs to be adjusted, the exhaust fan 10, the exhaust valve 27 and the temperature control box 29 work, and when the air flows through the temperature control box 29, the air is cooled or Heating, the utility model has a reasonable structural design and is easy to install and use. Through the design of the protective plate 11 and the guide frame 14, the protective plate 11 can be limited, so that the pressurized force is evenly transmitted to the sensor to be tested 15 and the standard sensor 12, reducing the data deviation caused by uneven pressure, and has strong practicality. Through the temperature sensor 17 and the humidity sensor 16, the experimental temperature of the box 1 can be accurately controlled to avoid the impact of environmental factors on the verification data. At the same time, the device is also suitable for different environmental occasions, which improves the scope of application of the device and is more economical.

[0032] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above-mentioned technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A weighing sensor calibration device, comprising a box (1) and a control box (7) connected thereto, characterized in that: The bottom of the box (1) is fixedly connected to the control box (7), the control box (7) is fixedly connected to a guide frame (14), a protective plate (11) is sleeved on the guide frame (14), a sensor to be tested (15) is placed between the two protective plates (11), a standard sensor (12) is provided on the side of the protective plate (11) away from the sensor to be tested (15), a temperature sensor (17) and a humidity sensor (16) are fixedly connected to the box (1), the top of the box (1) is fixedly connected to a pressurizing cylinder (2), the output end of the pressurizing cylinder (2) is connected to one of the protective plates (11), and a box door (6) is rotatably connected to the box (1).

2. A weighing sensor calibration device according to claim 1, characterized in that: The control box (7) is connected to an industrial computer (4) via a data line (13), and the industrial computer (4) is provided with a display (3) and a keyboard and mouse set (5).

3. A weighing sensor calibration device according to claim 1, characterized in that: Air guide covers (8) are provided on both sides of the box body (1), the air guide covers (8) are in communication with the inside of the box body (1), and a flow guide pipe (9) is provided at the other end of the air guide covers (8).

4. A weighing sensor calibration device according to claim 3, characterized in that: One end of the guide pipe (9) away from the air guide cover (8) is connected to the input end of the exhaust fan (10), the output end of the exhaust fan (10) is connected to the exhaust pipe (23), and the other end of the exhaust pipe (23) is provided with a dehumidification box (25).

5. A weighing sensor calibration device according to claim 4, characterized in that: A dehumidification valve (24) is provided on the exhaust pipe (23), an exhaust branch pipe (26) is provided on one side of the exhaust pipe (23), and an exhaust valve (27) is provided on the exhaust branch pipe (26).

6. A weighing sensor calibration device according to claim 5, characterized in that: The output end of the dehumidification box (25) and the end of the exhaust branch pipe (26) away from the exhaust pipe (23) are both connected to the connecting pipe (18), and the other end of the connecting pipe (18) is provided with a temperature control box (29), and the output end of the temperature control box (29) is connected to the guide pipe (9).

7. A weighing sensor calibration device according to claim 6, characterized in that: An air pump box (28) is provided on one side of the dehumidification box (25), and a water pump (21) is provided on one side of the temperature control box (29). The output end of the water pump (21) is connected to the connecting pipe (18) via a humidifying pipe (19), and a humidifying valve (22) is provided on the humidifying pipe (19). The input end of the water pump (21) is provided with a water inlet pipe (20).

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