CN108519493A - A sensor system for an automatic sampler - Google Patents

Abstract

The invention discloses a sensor system of an automatic sampler, comprising a pipette, a push plug and a push rod, the push plug and the push rod are located in the pipette, and the push rod is located at one end of the push plug, the pipette A pipe sleeve is provided on the outside of the pipe, and an upper frame is provided on the upper end of the pipe sleeve, an electric cylinder is provided on the inside of the upper frame, and the bottom end of the electric cylinder is fixedly connected to a push ring, and one end of the electric cylinder is in contact with the push rod through the push ring A monochromatic light source mounting frame is provided on one side of the bottom end of the tube sleeve, and a monochromatic light source group is provided at the bottom end of the monochromatic light source mounting frame. The invention provides a sample injector with simple structure, convenient operation and high precision, which assists in the operation process of measuring and transferring liquid, and the device can automatically carry out the process of sucking and blowing out liquid. Moreover, the feedback control principle of the sensor can be used to accurately measure the volume of the liquid. The error caused by the human operation of the experimenter is avoided, and the rigor of the experiment is improved.

Description

A sensor system for an automatic sampler

technical field

The invention relates to an experimental device, in particular to a sensor system of an automatic sampler.

Background technique

In the course of experiments, especially biochemical experiments, pipettes are often used to measure and transfer small or tiny amounts of liquid. The pipettes that have appeared now include air cushion samplers, piston moving samplers, multi-channel samplers, electronic samplers and distributors, etc. However, in the process of manual operation, due to the uneven pressure applied by the thumb and the poor control of the pressing speed, the viscosity of the liquid is different, resulting in inaccurate volume of the absorbed liquid, resulting in experimental errors. To this end, we propose a sensor system for an autosampler.

Contents of the invention

The main purpose of the present invention is to provide a sensor system for an automatic sampler, to provide a sampler with simple structure, convenient operation, and high precision, to assist in the operation process of measuring and transferring liquid, and the device can automatically suck and the process of blowing out the liquid. Moreover, the feedback control principle of the sensor can be used to accurately measure the volume of the liquid. Errors caused by manual operations of experimenters are avoided, the rigor of experiments is improved, and problems in the background technology can be effectively solved.

In order to achieve the above object, the technical scheme that the present invention takes is:

A sensor system for an automatic sampler, comprising a pipette, a push plug and a push rod, the push plug and the push rod are located in the pipette, and the push rod is located at one end of the push plug, and the outside of the pipette is provided with pipe sleeve, and the upper end of the pipe sleeve is provided with an upper frame, the inner side of the upper frame is provided with an electric cylinder, and the bottom end of the electric cylinder is fixedly connected to the push ring, one end of the electric cylinder is in contact with the push rod through the push ring, and the pipe A monochromatic light source installation frame is provided on one side of the bottom end of the sleeve, and a monochromatic light source group is provided at the bottom end of the monochrome light source installation frame. The top end of the tube is fixedly connected to the bottom end of the pipe sleeve, and the bottom end of the photosensitive sensor installation rod is provided with a photosensitive sensor.

Further, the bottom end of the pipette is threaded to a gun head, and the gun head is located between the monochromatic light source group and the photosensitive sensor.

Further, a groove is provided at the top of the upper frame, and a detachable rechargeable battery is connected in the groove, and the detachable rechargeable battery is electrically connected with the electric cylinder.

Further, the photosensitive sensor is electrically connected with the electric cylinder through a computer.

Further, the gun head is made of PE plastic material.

Compared with the prior art, the present invention has the following beneficial effects:

1. The sample injector of the present invention has simple structure, convenient operation and high precision, assists in the operation process of measuring and transferring liquid, and can automatically carry out the process of sucking and blowing out liquid.

2. The present invention uses the feedback control principle of the sensor to accurately measure the volume of the liquid, avoiding the experimental error caused by the operation of the experimenter, the uneven force applied, the poor control of the pressing speed, and the different viscosity of the liquid. The rigor of the experiment.

3. The present invention is suitable for widespread promotion due to the advantages of the pipe sleeve being covered on the outer wall of the pipette, making both of them detachable, easy to assemble, simple in manufacturing process, and the like.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of a sensor system of an automatic sampler according to the present invention.

Fig. 2 is a schematic diagram of the external structure of a sensor system of an automatic sampler according to the present invention.

Fig. 3 is a schematic structural diagram of the working principle of the sensor system of an automatic sampler according to the present invention.

In the figure: 1. Upper frame; 2. Push ring; 3. Tube cover; 4. Monochrome light source installation frame; 5. Monochrome light source group; 6. Photosensitive sensor; 7. Tip; 8. Pipette ; 9, push plug; 10, push rod; 11, electric cylinder; 12, detachable rechargeable battery; 13, photosensitive sensor installation rod.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

As shown in Figures 1-3, a sensor system of an automatic sampler includes a pipette 8, a push plug 9 and a push rod 10, the push plug 9 and the push rod 10 are located in the pipette 8, and the push Rod 10 is positioned at one end of push plug 9, and pipette 8 outside is provided with pipe cover 3, and pipe cover 3 upper end is provided with upper frame 1, and described upper frame 1 inner side is provided with electric cylinder 11, and electric cylinder 11 The bottom end is fixedly connected to the push ring 2, and one end of the electric cylinder 11 is in contact with the push rod 10 through the push ring 2, and the bottom end side of the pipe sleeve 3 is provided with a monochrome light source installation frame 4, and the monochrome light source is installed The bottom end of the frame 4 is provided with a monochromatic light source group 5, and the opposite surface of the monochromatic light source group 5 is provided with a photosensitive sensor mounting rod 13, and the top of the photosensitive sensor mounting rod 13 is fixedly connected to the bottom end of the pipe sleeve 3, and the photosensitive sensor The bottom end of the installation rod 13 is provided with a photosensitive sensor 6 .

Wherein, the bottom end of the pipette 8 is threadedly connected to the gun head 7 , and the gun head 7 is located between the monochromatic light source group 5 and the photosensitive sensor 6 .

Wherein, a groove is provided on the top of the upper frame 1 and a detachable rechargeable battery 12 is connected in the groove, and the detachable rechargeable battery 12 is electrically connected with the electric cylinder 11 .

Wherein, the photosensitive sensor 6 is electrically connected with the electric cylinder 11 through a computer.

Wherein, the gun head 7 is made of PE plastic material.

It should be noted that the present invention is a sensor system for an automatic sampler. When working, the monochromatic light source group 5 is turned on as a light source to emit monochromatic light, which passes through the PE plastic wall on the side of the gun head 7. If there is no medicine solution, then through the PE plastic wall on the other side of the gun head 7 to the photosensitive sensor 6, the light changes the value of the photosensitive sensor 6, and then the liquid level information is converted into Electric signal, if there is a drug solution inhaled, the light emitted by the monochromatic light source group 5 reaches the drug solution through the PE plastic wall of one layer of gun head 7, and after part of the light intensity is absorbed by the drug, it passes through another layer of gun head 7. The PE plastic wall is irradiated on the photosensitive sensor 6 to change its resistance value, which is then received, stored and processed by the computer, and can be controlled by the computer to adjust the action of the electric cylinder 11, and use the electric cylinder 11 to drive the push rod 10 and the push plug 9 in The inside of the pipette 8 moves up and down, thereby sucking and blowing out the liquid in the pipette 8, which can accurately measure the volume of the liquid, so as to avoid the loss of the liquid due to the uneven application of force and poor control of the pressing speed due to the operation of the experimenter. The experimental error caused by the different viscosity improves the rigor of the experiment.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. a kind of sensor system of autosampler, comprises pipette (8), push plug (9) and push rod (10), and described push plug (9) and push rod (10) are positioned at pipette ( 8), and the push rod (10) is located at one end of the push plug (9), it is characterized in that: the outside of the pipette (8) is provided with a sleeve (3), and the upper end of the sleeve (3) is provided with an upper Frame (1), the inside of the upper frame (1) is provided with an electric cylinder (11), and the bottom end of the electric cylinder (11) is fixedly connected to the push ring (2), and one end of the electric cylinder (11) passes through the push ring (2) In contact with the push rod (10), a monochromatic light source mounting frame (4) is provided on one side of the bottom end of the tube sleeve (3), and a monochromatic light source mounting frame (4) is provided at the bottom end of the monochromatic light source mounting frame (4). The light source group (5), the photosensitive sensor mounting rod (13) is arranged on the opposite side of the monochromatic light source group (5), and the top of the photosensitive sensor mounting rod (13) is fixedly connected to the bottom end of the pipe sleeve (3), and the The bottom end of the photosensitive sensor mounting rod (13) is provided with a photosensitive sensor (6). 2. The sensor system of a kind of autosampler according to claim 1, characterized in that: the bottom end of the pipette (8) is threadedly connected to the gun head (7), and the gun head (7) is located at the monochrome Between the light source group (5) and the photosensitive sensor (6). 3. A sensor system for an automatic sampler according to claim 1, characterized in that: the top of the upper frame (1) is provided with a groove and a detachable rechargeable battery (12) is connected in the groove, the The detachable rechargeable battery (12) is electrically connected with the electric cylinder (11). 4. A sensor system for an automatic sampler according to claim 1, characterized in that: the photosensitive sensor (6) is electrically connected to the electric cylinder (11) through a computer. 5. A sensor system for an automatic sampler according to claim 1, characterized in that: the gun head (7) is made of PE plastic.