CN-116096660-B - Sample transporting device, sample analyzing system and sample pretreatment device

CN116096660BCN 116096660 BCN116096660 BCN 116096660BCN-116096660-B

Abstract

The invention provides a sample transporting device, a sample analysis system and a sample pretreatment device, wherein the position accuracy is high when a sample is stopped, and the fine position can be adjusted when the sample is stopped. A sample transporting device (1 a) of the present invention comprises a sample provided with a permanent magnet (10), a transporting path for transporting the sample by the permanent magnet (10), a plurality of coils provided on the side opposite to the side for transporting the sample of the transporting path, and a driving circuit for supplying current to the coils, wherein the driving circuit adjusts the force acting in the vertical direction of the permanent magnet by using the current flowing in a first coil (30B) located directly below the position where the permanent magnet (10) is to be stopped, adjusts the force acting in the horizontal direction of the permanent magnet (10) by using the current flowing in a second coil (30C) adjacent to the first coil, and adjusts the stop position of the permanent magnet (10).

Inventors

AOYAMA YASUAKI
Jin Ziwu
Xiao Lin Qizhi
TAMAKOSHI TAKESHI
Xing Liaoyou
WATANABE YASUHIRO
ONIZAWA KUNIAKI

Assignees

株式会社日立高新技术

Dates

Publication Date: 20260512
Application Date: 20210318
Priority Date: 20200813

Claims (12)

1. A sample handling apparatus, comprising: A sample provided with a permanent magnet; A transport path that transports the sample while generating friction between a surface of the transport path that transports the sample and the sample, using the permanent magnet; A plurality of coils disposed on a surface of the transport path opposite to a surface on which the sample is transported, and A drive circuit that supplies a current to the coil, wherein, The drive circuit adjusts a force acting in a vertical direction of the permanent magnet by using a current flowing in a first coil located directly below a position where the permanent magnet is to be stopped, Adjusting a force acting in a horizontal direction of the permanent magnet by using a current flowing in a second coil adjacent to the first coil, The drive circuit supplies a current for generating a magnetic flux opposing the polarity of the permanent magnet to the first coil and simultaneously supplies a current for generating a magnetic flux opposing the polarity of the permanent magnet to the second coil, thereby adjusting the stop position of the permanent magnet.
2. The sample transportation device of claim 1, wherein: when the distance between the center of the permanent magnet and the center of the first coil is made x1, A distance D/2 from the center of the permanent magnet to the end of the permanent magnet, and When the distance from the center of the first coil to the end of the permanent magnet is d/2, In the interval of x 1-2+d/2, the drive circuit supplies a current generating magnetic flux repulsive to the polarity of the permanent magnet to the first coil to adjust the stop position of the permanent magnet.
3. The sample transportation device of claim 1, wherein: When the distance between the center of the permanent magnet and the center of the first coil is set to d/2, When the center of the permanent magnet is located in a + -d/2 section, the drive circuit supplies a current for generating a magnetic flux that repels the polarity of the permanent magnet to the first coil, thereby adjusting the stop position of the permanent magnet.
4. The sample transportation device of claim 1, wherein: The coil includes a magnetic core made of a magnetic material and a winding wound around an outer periphery of the magnetic core, The diameter D of the permanent magnet is larger than the diameter D of the core of the first coil, When the center of the permanent magnet is within a range of + - (D-D)/2, the driving circuit supplies a current generating a magnetic flux repulsive to the polarity of the permanent magnet to the first coil to adjust a stop position of the permanent magnet.
5. The sample transportation device of claim 1, wherein: The coil includes a magnetic core made of a magnetic material and a winding wound around an outer periphery of the magnetic core, The diameter D of the permanent magnet is smaller than the diameter D of the core of the first coil, When the center of the permanent magnet is within the range of + - (D-D)/2, the driving circuit supplies a current generating a magnetic flux repulsive to the polarity of the permanent magnet to the first coil to adjust the stop position of the permanent magnet.
6. The sample transportation device of claim 1, wherein: The coil includes a magnetic core made of a magnetic material and a winding wound around an outer periphery of the magnetic core, The area of the permanent magnet projected onto the conveying surface is smaller than the area of the magnetic core projected onto the conveying surface.
7. The sample transportation device of claim 1, wherein: The coil includes a magnetic core made of a magnetic material and a winding wound around an outer periphery of the magnetic core, The area of the magnetic core projected onto the transport surface is contained in the area of the permanent magnet projected onto the transport surface.
8. The sample transportation device of claim 1, wherein: the magnetic core of the first coil is T-shaped, and the cross section area of the side opposite to the permanent magnet is large.
9. The sample transportation device of claim 1, wherein: The permanent magnet includes a winding of the second coil and a winding of the third coil arranged so as to sandwich the winding of the first coil, and a current for generating magnetic flux that repels the polarity of the permanent magnet is supplied to the winding of the first coil, and a current for generating magnetic flux that attracts the polarity of the permanent magnet is supplied to the winding of the second coil and the winding of the third coil.
10. The sample transportation device of any one of claims 1-9, wherein: Comprising a unit for detecting the position of the permanent magnet.
11. A sample analysis system, characterized by: a sample transportation device comprising any one of claims 1 to 9.
12. A sample pretreatment apparatus, characterized in that: a sample transportation device comprising any one of claims 1 to 9.

Description

Sample transporting device, sample analyzing system and sample pretreatment device Technical Field The invention relates to a sample transport device, a sample analysis system and a sample pretreatment device. Background In a sample analysis system for clinical examination, examination of an indicated analysis item is performed on a sample (specimen) of blood, plasma, serum, urine, other body fluids, or the like. The sample analysis system can connect devices with multiple functions and automatically process each process. That is, in order to make the business of the examination room more reasonable, an analysis unit in a plurality of analysis fields such as biochemistry and immunity and a pretreatment unit for performing pretreatment necessary for analysis are connected by a transportation pipeline, and are used as 1 system. The transportation pipeline used in the existing sample analysis system is mainly driven by a driving belt. In such a belt drive system, if the conveyance is stopped due to some abnormality during the conveyance, there is a problem in that the sample can no longer be supplied to the downstream device. Therefore, it is necessary to sufficiently pay attention to wear of the transmission belt. In recent years, with the progress of medical treatment and the development of an aging society, the importance of sample processing has been increasing. Thus, in order to improve the analysis processing capacity of the sample analysis system, it is required to be able to realize high-speed transportation, mass simultaneous transportation, and transportation in a plurality of directions of the sample. As an example of a technique for realizing such transportation, there is a technique described in patent document 1. Patent document 1 describes a laboratory sample delivery system comprising a number of container carriers (1) each having at least 1 magnetically active device, preferably at least 1 permanent magnet, and adapted to transport sample containers containing samples, a transport plane adapted to transport a plurality of container carriers, a number of electromagnetic actuators arranged stationary below the transport plane adapted to move the container carriers on the transport plane by applying magnetic forces to the container carriers, and at least one transfer device configured to transfer a sample between the transport plane and a laboratory site, preferably a pre-analysis site, an analysis site and/or a post-analysis site, the sample being a container carrier, a sample container, a part of a sample and/or a set of samples. Patent document 2 discloses a structure for transporting a container carrier on which a sample container is mounted by using magnetic force. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2017-227648 Disclosure of Invention Technical problem to be solved by the invention The technique described in patent document 1 describes that the electromagnetic actuator is activated stepwise according to the position of the container carrier. However, in the system of patent document 2, the electromagnetic actuator to be activated is switched only in accordance with the position of the container carrier. That is, current is applied to the electromagnetic actuator located at a position where the permanent magnet of the container carrier is to be transported, so that the container carrier is stopped at the target position by the attractive force of the permanent magnet and the electromagnetic actuator, and a force (thrust force) in a direction where the permanent magnet is to be transported and a force (vertical force) for pressing the permanent magnet against the transport surface are generated in the attractive force of the electromagnetic actuator. However, in the case where the permanent magnet comes directly above the electromagnetic actuator, the thrust force becomes substantially zero, but the vertical force is not reduced. That is, there is a problem that the closer the permanent magnet is to the target position, the smaller the force that moves the permanent magnet in the lateral direction, that is, the thrust force, and the frictional force between the permanent magnet and the transport surface is relatively increased by the vertical force, and the accuracy of the stop position of the permanent magnet is lowered. Further, when the position of the permanent magnet is slightly changed from a stationary state, there is a problem that a large friction force occurs with respect to the thrust force, the state of the friction force changes from static friction to dynamic friction, and it is difficult to obtain the position accuracy of the fine permanent magnet. In view of the above, the present invention provides a sample transport device, a sample analysis system, and a sample pretreatment device, which have high positional accuracy when a sample is stopped and can adjust a fine position when the sample is stopped. Technical me