Automatic testing device for sensor
By designing an automatic sensor testing device, and using a linear power source and a fixed structure to adjust the sensor position, the problem of large testing errors in reflective sensors was solved, achieving high-precision sensor detection and ensuring the efficient operation of fully automated in vitro diagnostic equipment.
Patent Information
- Application Number
- CN202520548824.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-27
AI Technical Summary
Existing reflective sensors have large testing errors, making it impossible to effectively obtain the sensing area and repeatability, which affects the high-precision operation of fully automated in vitro diagnostic equipment.
Design an automatic sensor testing device, comprising a base, a linear power mechanism, a fixing component, and a control system. The device adjusts the position of the metal sensing sheet using a linear power source to achieve rapid testing of the slotted sensor. The device also adjusts the position of the reflective sensor using a clamping and fixing structure to determine its sensing area and repeatability.
This improves the reliability and accuracy of sensor detection results, provides a basis for sensor selection, and ensures the high-precision operation of fully automated in vitro diagnostic equipment.
Smart Images
Figure CN223870105U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sensor testing, and in particular to an automatic sensor testing device. Background Technology
[0002] Fully automated in vitro diagnostic (IVD) equipment is an indispensable part of modern medical testing laboratories, such as fully automated biochemical analyzers and fully automated chemiluminescence immunoassay analyzers. To achieve high-precision operation, these devices often require a large number of sensors, such as grooved sensors and reflective sensors. Sensors are key components affecting the high-precision operation of IVD equipment. Before installation, it is usually necessary to test the sensor's sensing area and repeatability. This serves to eliminate sensors with large deviations and to provide a reference for sensor selection in IVD equipment. However, existing reflective sensors are generally tested manually, resulting in large errors and making it difficult to accurately obtain the sensor's sensing area. Therefore, designing a testing device that can test both grooved and reflective sensors is crucial. Summary of the Invention
[0003] In view of this, the present invention proposes an automatic sensor testing device that can be used not only for testing slotted sensors but also for testing reflective sensors, thereby achieving high-precision detection of different types of sensors.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] The automatic sensor testing device of this utility model includes a base, a control system, a linear power mechanism disposed on the base, a first fixing member for fixing a slotted sensor, and a second fixing structure for fixing a reflective sensor. The linear power mechanism includes a linear power source and a sliding seat driven by the linear power source to move back and forth in a straight line. A metal sensing sheet for triggering the slotted sensor is disposed on one side of the sliding seat, and a clamping structure for clamping a sample tube is disposed on the sliding seat.
[0006] One end of the base is provided with an origin sensor for monitoring the origin position of the sliding seat; the control system includes a microcontroller and a host computer, and the signal output terminals of the origin sensor, the slot sensor and the reflection sensor are all connected to the signal input terminal of the microcontroller, and the microcontroller is connected to the host computer.
[0007] The beneficial effects are as follows: This utility model uses a first fixing component to fix the slotted sensor and a linear power source to adjust the position of the metal sensing sheet, thereby enabling rapid testing of the slotted sensor; This utility model uses a clamping structure to fix the sample tube and fixes the reflection sensor on the second fixing structure. By adjusting the installation position of the reflection sensor, its sensing area in front of, behind, left and right of the sample tube and its repeatability can be determined, thereby improving the reliability and accuracy of the detection results and providing a basis for the selection of sensors for instruments.
[0008] In a preferred embodiment of this utility model, the linear power source is any one of a pneumatic cylinder, hydraulic cylinder, electric cylinder, lead screw stepper motor, or synchronous belt drive mechanism, and the sliding seat is disposed at the power output end of the linear power source; a slide rail is disposed on the base, and the bottom of the sliding seat slides in cooperation with the slide rail. More preferably, the linear power source is an electric cylinder or a lead screw stepper motor, which can drive the sliding seat to move back and forth linearly along the slide rail to meet the testing requirements of the sensor.
[0009] In a preferred embodiment of this invention, the second fixing structure includes a base fixed to a long side of the base and a vertical fixing unit for fixing the reflection sensor. The vertical fixing unit includes a vertical plate fixed to the base, a height adjusting plate fixed to the vertical plate, and a horizontal adjusting plate fixed to the height adjusting plate. The reflection sensor is fixed to the horizontal adjusting plate via a fixing seat. One end of the base has a first scale line aligned with its width direction, the vertical plate has a second scale line, and the base has a third scale line. This second fixing structure allows for adjustment of the reflection sensor's position, thereby enabling the acquisition of its sensing areas in the front, back, left, and right sides of the sample tube, and improving repeatability.
[0010] More preferably, the mounting surface of the upright plate has protrusions on both sides of its edge, and each protrusion has a second scale line; the upright plate has a vertically opened first adjustment hole, and the upright plate is located between the two protrusions and fixed to the upright plate by bolts; the horizontal adjustment plate has an L-shaped structure, and its horizontal section has a second adjustment hole, and the height adjustment plate is fixed to the horizontal section of the horizontal adjustment plate by bolts; the fixing seat is fixed to the vertical section of the horizontal adjustment plate. The adjustment hole of this utility model has an elongated structure, which can realize the adjustment of the height of the height adjustment plate and the adjustment of the horizontal adjustment plate in the horizontal direction.
[0011] Preferably, there are multiple first fixing members, which are fixed at intervals along the edge of a long side of the base. Each first fixing member has a mounting hole, and the slotted sensor is fixed to the first fixing member by bolts. In actual installation, the first fixing member is preferably a support with the same structure as the sensor mounting base on the instrument, which can simulate the actual environment of the sensor and further improve the detection accuracy of the slotted sensor. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model (the clamping structure and the second fixing structure are omitted).
[0013] Figure 2 This is another schematic diagram of the clamping structure described in this utility model.
[0014] Figure 3 This is a schematic diagram of the installation of the reflection sensor in this utility model.
[0015] Figure 4 This is a schematic diagram of the installation of the reflection sensor on the other side of the sample tube.
[0016] Figure 5 This is a circuit block diagram of this utility model. Detailed Implementation
[0017] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.
[0018] It should be noted that in the description of this utility model, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.
[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] It should be noted that, in the description of this utility model, the sensing area refers to the triggering area of the sensor, and the repeatability refers to the consistency of the triggering position of the sensor for the same detection object.
[0021] like Figure 1-5As shown, this utility model proposes an automatic sensor testing device, including a base 1, a control system, a linear power mechanism mounted on the base 1, a first fixing member for fixing a slotted sensor, and a second fixing structure for fixing a reflective sensor. The linear power mechanism includes a linear power source and a sliding seat 2 driven by the linear power source to move back and forth linearly. A metal sensing plate 3 for triggering the slotted sensor is provided on one side of the sliding seat 2. A clamping structure (preferably a three-jaw chuck 4) for clamping sample tubes is provided on the sliding seat 2. The three-jaw chuck 4 can be used to clamp different sample tubes F1, which can be used as the detection object of the reflective sensor F2, thereby determining the sensing area and repeatability of the reflective sensor F2. An origin sensor 5 for monitoring the origin position of the sliding seat 2 is provided at one end of the base 1. The origin sensor 5 is preferably a slotted photoelectric sensor. A trigger plate 6 that cooperates with the origin sensor 5 is provided on the sliding seat 2. When the origin sensor is triggered, the sliding seat 2 is at the origin position, and the position of the sliding seat 2 during the test can be determined based on the origin position.
[0022] The control system includes a microcontroller and a host computer (the host computer can be a computer or an industrial control computer with computer attributes). The signal output terminals of the origin sensor 5, the slotted sensor F3, and the reflection sensor F2 are all connected to the signal input terminal of the microcontroller. The microcontroller is connected to the host computer, and the control output terminal of the microcontroller is connected to the control input terminal of the linear power source. In actual operation, the microcontroller receives the signals emitted by the sensors and transmits them to the host computer. The host computer processes the signals to obtain the sensor's sensing area and repeatability data. This invention uses a first fixing component to fix the slotted sensor and uses a linear power source to adjust the position of the metal sensing sheet 3, thus achieving rapid testing of the slotted sensor. This invention uses a three-jaw chuck 4 to fix the sample tube F1 and fixes the reflection sensor on the second fixing structure. The reflection sensor can be adjusted up and down and left and right in the radial plane of the sample tube's movement direction, thereby determining the sensor's sensing area and repeatability in the front-back and left-right directions of the sample tube, improving the reliability and accuracy of the detection results, and providing a basis for sensor selection.
[0023] In one embodiment of this utility model, the clamping structure can also be adopted. Figure 2 The structure shown, namely the clamping structure, includes a support and a mounting groove 10 set on the support. During testing, the sample tube (or other containers) is placed in the mounting groove 10 and fastened with the fastening bolts 11. Disassembly is simple and convenient.
[0024] Combination Figure 1 , 3As shown in section -4, the preferred linear power source is a lead screw stepper motor 7. The motor body of the lead screw stepper motor 7 is fixed to one end of the base 1, and the sliding seat 2 is mounted on the lead screw of the lead screw stepper motor 7. During the rotation of the lead screw stepper motor 7, the sliding seat 2 can move horizontally. The direction of movement of the sliding seat 2 can be adjusted by changing the rotation direction of the lead screw stepper motor 7. To prevent the sliding seat 2 from twisting during movement, a slide rail 17 parallel to the lead screw is installed on the base 1, and the bottom of the sliding seat 2 slides in conjunction with the slide rail 17.
[0025] Of course, in actual installation, the linear power source can be any one of the following: pneumatic cylinder, hydraulic cylinder, electric cylinder, or synchronous belt drive mechanism. In actual installation, since pneumatic cylinders require an air source and hydraulic cylinders require a matching hydraulic station, electric cylinders and synchronous belt drive mechanisms are more preferred linear power sources.
[0026] As shown in section 1, multiple pairs of mounting holes are provided on the front long side of the base 1. Each pair of mounting holes houses an L-shaped mounting base 8, which is bolted to the mounting base 8. The first fixing component is a sensor support 9, which is bolted to the mounting base 8 and used to fix the slot-shaped sensor. In actual testing, the sensor support 9 can be a support provided with the instrument, thus simulating the actual installation of the slot-shaped sensor and improving the reliability of the test results. See section 1 for details. Figure 1 (When testing the slotted sensor, simply install a sensor support on the front long side of base 1).
[0027] Combination Figure 3-4 It is known that the second fixing structure includes a base 12 fixed to a long side of the base 1 and a vertical fixing unit for fixing the reflection sensor F2. The unit includes a vertical plate 13 fixed to the base 1, a height adjustment plate 14 fixed to the vertical plate 13, and a horizontal adjustment plate 15 fixed to the height adjustment plate 14. The reflection sensor F2 is fixed to the horizontal adjustment plate 15 through a fixing seat 16. The base 1 has a first scale line L1 at one end that is consistent with its width direction, the vertical plate 13 has a second scale line L2, and the base 12 has a third scale line L3. The adjustment position of the reflection sensor can be determined according to the scale lines, and then the sensing area and repeatability of the reflection sensor at that position can be tested and obtained.
[0028] During actual installation, the mounting surface of the upright plate 13 has protrusions on both sides of its mounting surface, and each protrusion has a second scale line L2. The upright plate 13 has a vertically opened first adjustment hole, and the upright plate 13 is located between the two protrusions and is fixedly connected to the upright plate 13 by bolts. The horizontal adjustment plate 15 has an L-shaped structure, and its horizontal section has a second adjustment hole. The height adjustment plate 14 is fixedly connected to the horizontal section of the horizontal adjustment plate 15 by bolts. The fixing seat 16 is fixedly connected to the vertical section of the horizontal adjustment plate 15, as detailed in the following figure. Figure 3-4 .
[0029] The adjustment hole of this invention is an elongated structure, which can adjust the height of the height adjustment plate 14 and the horizontal adjustment plate 15 in the horizontal direction. The second fixing structure of this invention can adjust the position of the reflection sensor, ensuring that its positional relationship with the sample tube is within the sensor trigger range, thereby enabling the acquisition of its sensing area in front of, behind, and to the sides of the sample tube and the accuracy of repeatability.
[0030] The testing process of this utility model is as follows: When batch testing of the slotted sensor is required, the sensor support 9 is fixedly installed on the front long side edge of the base 1, and the sensor to be tested is fixed on the sensor support 9. The lead screw stepper motor 7 is started to move the sliding seat 2 to the origin position. After confirming that the sliding seat 2 is at the origin position, the host computer sends a test command to the lead screw stepper motor 7 through the microcontroller. The lead screw stepper motor 7 drives the sliding seat 2 to move, and the metal sensing plate 3 on the sliding seat 2 triggers the slotted sensor. The slotted sensor transmits the signal to the microcontroller, and the microcontroller transmits the received signal to the host computer. The host computer analyzes the signal to obtain the sensing area of the sensor. This process is repeated to obtain the repeatability accuracy of the slotted sensor F3.
[0031] When batch testing of the reflective sensor is required, the sensor support 9 can be removed, the base 12 fixed to the front long side of the base 1, and the vertical fixing unit fixed to the base 12. The distance between the reflective sensor and the sample tube can be adjusted by adjusting the fixing position of the vertical fixing unit on the base 12. The sample tube is then placed on a three-jaw chuck. See details below. Figure 3 ;
[0032] Determine the origin position of the sliding seat 2, then use the lead screw stepper motor 7 to drive the sample tube on the sliding seat 2 past the front of the reflection sensor to determine the sensing area of the reflection sensor in the left and right directions; repeat this process to obtain the repeatability accuracy of the reflection sensor in the left and right directions; during testing, the vertical fixing unit can also be fixed on the base 1 at the corresponding position of the first scale line L1. The reflection sensor can be adjusted in the front-back and left-right directions by adjusting the installation position of the vertical fixing unit on the base 1. After installation, repeat the test of the sensing area in the front-back direction to obtain the sensing area and repeatability accuracy of the reflection sensor in the front-back direction. See details. Figure 4 .
[0033] In actual testing, for reflective sensors in the same batch, the reflective sensors can be tested in the front-back and left-right directions before replacing the next reflective sensor; alternatively, the front-back (or left-right) directions can be tested one by one first, and then the left-right (or front-back) directions can be tested one by one.
[0034] Finally, it should be emphasized that the above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A sensor auto-tester device comprising a base, characterized in that: The control system, the linear power mechanism arranged on the base, the first fixing part for fixing the slot sensor, and the second fixing structure for fixing the reflection sensor are further included, the linear power mechanism includes a linear power source and a sliding seat driven by the linear power source to move linearly back and forth, one side of the sliding seat is provided with a metal induction sheet for triggering the slot sensor, and the sliding seat is provided with a clamping structure for clamping a sample tube; One end of the base is provided with an origin sensor for monitoring the origin position of the sliding seat; the control system includes a single-chip microcomputer and an upper computer, the signal output ends of the origin sensor, the slot sensor, and the reflection sensor are connected with the signal input end of the single-chip microcomputer, and the single-chip microcomputer is connected with the upper computer.
2. The sensor automatic test device of claim 1, wherein: The linear power source is any one of a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, a lead screw stepper motor, or a synchronous belt transmission mechanism, and the sliding seat is arranged at the power output end of the linear power source; the base is provided with a slide rail, and the bottom of the sliding seat is in sliding fit with the slide rail.
3. The sensor automatic test device of claim 1, wherein: The second fixing structure includes a base fixed at one long side of the base and a vertical fixing unit for fixing the reflection sensor, which includes a stand fixed on the base, a height adjusting plate fixed on the stand, and a horizontal adjusting plate fixed on the height adjusting plate, and the reflection sensor is fixed on the horizontal adjusting plate through a fixing seat; The base has a first scale line consistent with the width direction of the base at one end thereof, the stand has a second scale line, and the base is provided with a third scale line.
4. The sensor automatic test device of claim 3, wherein: The stand has a boss at each of the two side edges of the mounting surface, each of the bosses is provided with a second scale line, the stand has a first adjusting hole vertically arranged, and the stand is fixed between the two bosses through bolts; The horizontal adjusting plate has an L-shaped structure, the horizontal section of the horizontal adjusting plate has a second adjusting hole, and the height adjusting plate is fixed on the horizontal section of the horizontal adjusting plate through bolts; and the fixing seat is fixed on the vertical section of the horizontal adjusting plate.
5. The sensor automatic test device of claim 1, wherein: The first fixing part is a plurality of parts and is fixed at the edge of one long side of the base, each of the first fixing parts is provided with a mounting hole, and the slot sensor is fixed on the first fixing part through bolts.