CN-122015995-A - Visual constant volume device and application thereof

CN122015995ACN 122015995 ACN122015995 ACN 122015995ACN-122015995-A

Abstract

The invention relates to the field of constant volume devices, and discloses a visual constant volume device and application thereof, wherein the visual constant volume device comprises a liquid adding module, a mechanical arm module and a control module, wherein the liquid adding module is used for adding liquid into a constant volume container, and the mechanical arm module comprises a longitudinal moving assembly; the control module is electrically connected with the liquid adding module and the vision acquisition module, is used for receiving signals and executing corresponding operations, recognizes the relative position of the liquid level and the scale marks and the liquid level rising rate through a built-in algorithm, and further outputs a flow regulating instruction to the liquid adding module. The mechanical arm of the visual constant volume device synchronously carries the visual acquisition module, is cooperated with the liquid adding module through the built-in algorithm of the control module, improves the efficiency and the accuracy, and meanwhile, the liquid adding module is provided with the multi-channel liquid injection head and can be modularly customized according to the requirements, so that the visual constant volume device can be compatible with the rapid mixing proportion of various liquids.

Inventors

LIU JIAPENG
LIU JIAXIN
SHU YAFENG
QU YU
LIANG QIWEI
ZHU ZHESI

Assignees

汇像智能科技(上海)有限公司
长三角一体化示范区(苏州吴江)医米基科学技术发展有限公司

Dates

Publication Date: 20260512
Application Date: 20260304

Claims (10)

1. The visual constant volume device is characterized by comprising, The liquid adding module is used for adding liquid into the constant volume container, A robotic arm module including a longitudinal movement assembly; The visual acquisition module is connected with the longitudinal moving component and moves up and down along with the movement of the longitudinal moving component, and the visual acquisition module is always kept level with the top surface of the liquid in the constant volume container; The control module is electrically connected with the liquid adding module and the vision acquisition module, and is used for receiving signals and executing corresponding operations, identifying the relative position of the liquid level and the scale marks and the liquid level rising rate through a built-in algorithm, and further outputting a flow regulating instruction to the liquid adding module.
2. The visual constant volume device according to claim 1, wherein the liquid adding module comprises a mounting shell, a servo motor is arranged in the mounting shell, the servo motor is connected with a hollow shaft through a transmission mechanism, the top of the hollow shaft penetrates through the mounting shell and is connected with a liquid adding device, the liquid adding device is provided with at least one liquid injecting head, the liquid injecting head is correspondingly connected with a liquid supplying power assembly and a liquid storing assembly, the liquid supplying assembly is electrically connected with the control module, and the liquid adding flow is adjusted according to instructions.
3. The visual constant volume device according to claim 2, wherein the transmission mechanism is a synchronous pulley, an output shaft of the servo motor is connected with a driving wheel of the synchronous pulley, and the hollow shaft is connected with a driven wheel of the synchronous pulley.
4. The visual constant volume device according to claim 2, wherein the plurality of liquid injection heads are provided, each liquid injection head is provided with a peristaltic pump for supplying liquid and a liquid storage tank for storing liquid, and the visual constant volume device further comprises a second photoelectric sensor for detecting the liquid injection position.
5. The visual constant volume device according to claim 1, wherein the mechanical arm module comprises a fixed mounting seat, a camera mounting seat fixedly connected with the longitudinal moving assembly, a visual acquisition module arranged on the camera mounting seat, and a first photoelectric sensor electrically connected with the control module and used for detecting whether the visual acquisition module is in place and controlling the movement limit of the visual acquisition module.
6. The visual constant volume device according to claim 5, wherein the first photoelectric sensor is provided in two for detecting an upper limit and a lower limit of the longitudinal moving member, respectively.
7. The visual constant volume device according to claim 1, wherein the visual acquisition module comprises an industrial camera fixed with a camera mounting seat and a matched lens and a filter lens, wherein the matched lens faces to a scale area of the constant volume container and is used for shooting dynamic images of the liquid level in the container in real time.
8. The visual constant volume device of claim 1, further comprising a light supplementing module for providing stable, uniform illumination.
9. The visual constant volume device of claim 8, further comprising a load-bearing platform, wherein the mechanical arm module, the liquid adding module and the light supplementing module are all fixed on the load-bearing platform, and a constant volume container base is further arranged on the load-bearing platform and provided with a positioning groove for fixing the constant volume container, wherein the constant volume container is placed in the positioning groove.
10. Use of a visual constant volume device according to any one of claims 1-9, comprising the steps of, Step 1, initializing equipment and setting parameters, namely presetting parameters corresponding to a liquid adding module through a control module, and driving a vision acquisition module to reset by a mechanical arm module; Step2, dynamic liquid adding and image acquisition, namely starting a liquid adding module to add liquid into the constant volume container according to preset requirements, and simultaneously, shooting liquid level dynamic images in real time by a vision acquisition module and synchronously transmitting image data to a control module; step 3, real-time identification and flow regulation, wherein the control module processes the received image through a built-in image processing algorithm, controls the mechanical arm module to rise along with the rising of the liquid level in the constant volume container, and dynamically adjusts the liquid adding flow parameters according to the remaining constant volume space and the rising rate of the liquid level; and 4, stopping the constant volume, namely immediately sending a liquid adding stopping instruction to the liquid adding module when the control module recognizes that the edge of the liquid level coincides with the position of the preset scale mark, namely, the recognition threshold value is reached, and finishing the constant volume.

Description

Visual constant volume device and application thereof Technical Field The invention relates to the field of constant volume devices, in particular to a visual constant volume device and application thereof, which are used for occasions requiring high-precision constant volume such as laboratory sample processing samples, water quality detection, food and drug analysis, chemical raw material configuration and the like. Background In the fields of laboratory detection, industrial production and the like, the constant volume of liquid is a key step for guaranteeing the accuracy of a subsequent analysis result and the stability of product quality. At present, the visual constant volume device can only realize that the scale is stopped, can not conduct prejudgment according to the dynamic change of the liquid level, can not accurately regulate and control the liquid adding flow, causes contradiction between the liquid adding speed and the constant volume precision, leads to the fact that the liquid adding speed is too fast to easily generate liquid level overshoot, and affects the processing efficiency when the liquid adding speed is too slow, and meanwhile, the traditional visual constant volume device has weaker anti-interference capability on complex environments and lower liquid level identification accuracy. Disclosure of Invention In order to solve the technical problems, the invention aims to provide a visual constant volume device capable of realizing accurate control and measuring liquid capacity and application thereof. In order to achieve the technical aim, as a first aspect, the invention is realized by a visual constant volume device which comprises, The liquid adding module is used for adding liquid into the constant volume container, A robotic arm module including a longitudinal movement assembly; The visual acquisition module is connected with the longitudinal moving component and moves up and down along with the movement of the longitudinal moving component, and the visual acquisition module is always kept level with the top surface of the liquid in the constant volume container; The control module is electrically connected with the liquid adding module and the vision acquisition module, and is used for receiving signals and executing corresponding operations, identifying the relative position of the liquid level and the scale marks and the liquid level rising rate through a built-in algorithm, and further outputting a flow regulating instruction to the liquid adding module. According to the invention, the liquid adding module comprises a mounting shell, a servo motor is arranged in the mounting shell, the servo motor is connected with a hollow shaft through a transmission mechanism, the top of the hollow shaft penetrates through the mounting shell and is connected with a liquid adding device, the liquid adding device is provided with at least one liquid injection head, the liquid injection head is correspondingly connected with a liquid supply power assembly and a liquid storage assembly, the liquid supply assembly is electrically connected with the control module, and the liquid adding flow is adjusted according to instructions. According to the invention, the transmission mechanism is a synchronous pulley, an output shaft of the servo motor is connected with a driving wheel of the synchronous pulley, and the hollow shaft is connected with a driven wheel of the synchronous pulley. According to the invention, the liquid filling heads are provided with a plurality of peristaltic pumps which are used for providing liquid supply power and liquid storage tanks used for storing liquid, and the liquid filling head also comprises a second photoelectric sensor used for detecting the liquid filling position. According to the invention, the mechanical arm module comprises a fixed mounting seat, a camera mounting seat fixedly connected with the longitudinal moving assembly, a vision acquisition module and a first photoelectric sensor electrically connected with the control module, wherein the lifting module is fixedly arranged on one side of the mechanical arm module and provided with the longitudinal moving assembly, and the first photoelectric sensor is used for detecting whether the vision acquisition module is in place or not and controlling the movement limit of the vision acquisition module. According to the invention, the number of the first photoelectric sensors is two, and the first photoelectric sensors are respectively used for detecting the upper limit and the lower limit of the longitudinal moving assembly. According to the invention, the vision acquisition module further comprises an industrial camera fixed with the camera mounting seat, and a matched lens and a filter lens which are arranged on the industrial camera, wherein the matched lens faces to the scale area of the constant volume container and is used for shooting dynamic images of the liquid level in the container in real time. Acc