Milk analysis device and temperature regulation in milk analysis device

Abstract

A milk analysis device (120) associated with a milking device (110) is configured to receive a cartridge (130) that is removably inserted into the milk analysis device (120). The milk analysis device (120) comprises: a receiving portion (125) configured to detachably receive the cartridge (130); a housing (310) enclosing the milk analysis device (120); a thermoelectric element (340); an internal heat exchange element (350); a fan (360) arranged to circulate air inside the housing (310); a temperature sensor (240) arranged inside the housing (310); a guide surface (380) of the milk analysis device (120) for guiding the circulating air inside the housing (310) toward an outlet (510) of the receiving portion (125) via the internal heat exchange element (350); and a control unit (150) configured to: determine a temperature via the temperature sensor (240); compare the determined temperature with a temperature threshold limit; and regulate a current supplied to the thermoelectric element (340).

Description

Technical Field

[0001] This document discloses a milk analysis device. More specifically, it presents a milk analysis device associated with a milking device. The milk analysis device is configured to receive a cartridge that is removably inserted into the milk analysis device. The cartridge includes a first portion for holding an unused lateral flow stick and a second portion for holding a used lateral flow stick. The temperature within the housing of the milk analysis device is measured by a temperature sensor and compared to a temperature threshold. Based on the result of the comparison, the temperature within the housing can be adjusted. Background Art

[0002] On animal farms, it is important to keep animals healthy in order to increase milk / meat production. For example, it is important to inseminate animals at the optimal moment in order to successfully inseminate the cow / animal. If an animal is not successfully inseminated, milk production will be affected.

[0003] Several biomarker measurements can be performed on animals, such as progesterone, LDH (lactate dehydrogenase), BHB (beta-hydroxybutyrate), and urea levels. This can yield important information about, for example, estrus detection and / or pregnancy (based on measured progesterone levels), as well as mastitis (based on LDH) and ketosis (based on BHB) in individual animals. In addition, energy balance can be estimated (based on urea).

[0004] This provides the farmer / operator with important information about each individual animal. The analysis of the animals can be automated using a milk analysis device, such as that described in WO 2018236271. Thus, the lateral flow sticks / milk analysis units / dry sticks can be easily managed on the farm by advancing one lateral flow stick at a time. Typically, one lateral flow stick is used for each test sample. A cassette can contain a large number of lateral flow sticks, but when all lateral flow sticks have been used up, the cassette containing the lateral flow sticks must be replaced with new ones.

[0005] Barns where animals are kept often have neither central heating nor air conditioning. Sometimes, barns are constructed without insulation. Consequently, the temperature inside the barn can vary from year to year, depending on both the ambient temperature and the number of animals in the barn relative to the barn's volume.

[0006] During the summer months, temperatures can occasionally reach very high (depending on the farm's location), which can affect the reliability of the lateral flow wand, as the chemicals used in the lateral flow wand / milk analysis unit / dry stick age more rapidly at high temperatures and may not perform as expected if exposed to extreme temperatures. The milk analysis equipment's measuring devices, sensors, processors, and other electronics may also be affected. Each animal in the barn radiates body heat, which increases the overall internal temperature of the barn and, consequently, the temperature of the milk analysis equipment and lateral flow wand.

[0007] The opposite problem can also occur specifically in winter, for example in subarctic or temperate climates; that is, it can get very cold in the barn, or at least in the area where the milk analysis equipment is located. Furthermore, excessively low temperatures can affect the behavior and reliability of the lateral flow rod, as the reaction when the milk sample is added to the rod is delayed at low temperatures. Consequently, the test results can be too slow or unreliable.

[0008] Another problem in farms / barns where animals are kept is that the environment often comprises dust and insects, which may affect the milk analysis equipment (e.g. sensitive electronics therein) and / or the lateral flow wand if, for example, a large number of ventilation holes are drilled in the milk analysis equipment to increase ventilation.

[0009] For these reasons, it would be advantageous to find a way to control / regulate the temperature of milk analysis equipment on a farm and enable cooling of the milk analysis equipment when the temperature exceeds a threshold limit, thereby ensuring reliable results of biomarker measurements performed by the milk analysis equipment on a lateral flow stick. Summary of the Invention

[0010] It is therefore an object of the present invention to address at least some of the above-mentioned problems associated with extreme temperatures and degraded chemicals on lateral flow rods, thereby enabling reliable biomarker measurements on milk samples from animals.

[0011] According to a first aspect of the present invention, this object is achieved by a milk analysis device associated with a milking device, the milk analysis device being configured to receive a cartridge that is removably inserted into the milk analysis device. The cartridge comprises a lateral flow stick for analyzing a milk sample.

[0012] By allowing the cartridge to be removably inserted into the milk analyzing device, the cartridge can be replaced in a convenient manner, also for an inexperienced operator.

[0013] The purpose of the milk analysis device is to analyze milk extracted from farm animals via milking equipment. The analysis can involve milk biomarkers. The analysis can be performed by applying the milk sample to a lateral flow stick on a cartridge and analyzing the color change of the lateral flow stick.

[0014] A biomarker (or biological marker) is a measurable indicator of a biological state or condition in an animal. Biomarker values ​​can be correlated with animal pregnancy / reproduction, such as progesterone measurements.

[0015] The milk analyzing device includes a storage portion configured to removably store the cartridge. Furthermore, the milk analyzing device includes a housing that encloses at least a portion of the milk analyzing device. The milk analyzing device also includes a thermoelectric element. Furthermore, the milk analyzing device includes an internal heat exchange element that is positioned adjacent to the thermoelectric element. Furthermore, the milk analyzing device includes a fan that is positioned to circulate air within the housing of the milk analyzing device. Furthermore, the milk analyzing device includes a temperature sensor that is positioned within the housing of the milk analyzing device. The milk analyzing device further includes a guide surface of the milk analyzing device for guiding circulating air within the housing toward an outlet of the storage portion via the internal heat exchange element.

[0016] The outlet of the receiving part of the milk analyzing device may in turn be positioned at or close to a hole / air guiding member arranged on the first part of the cassette, in which an unused lateral flow stick is held, for guiding the circulating air to the unused lateral flow stick in the cassette.

[0017] The milk analysis device further includes a control unit. The control unit is configured to determine a temperature inside the housing via the temperature sensor. Furthermore, the control unit is configured to compare the determined temperature with a temperature threshold limit. The control unit is further configured to adjust a current supplied to the thermoelectric element based on the comparison.

[0018] The thermoelectric element may comprise, for example, a Peltier element. The thermoelectric element is based on a thermoelectric effect achieved by converting a voltage difference into a temperature difference between the two sides (warm side and cold side) of the thermoelectric element. When an electric current is applied to the thermoelectric element, heat is transferred from the warm side to the cold side, thereby generating a temperature difference. By adjusting the current supplied to the thermoelectric element, the temperature difference between the two sides of the thermoelectric element can be adjusted. An increase in current will result in an increase in the temperature difference, and vice versa. The hot side and the cold side of the thermoelectric element can be reversed by reversing the current supplied to the thermoelectric element. Thus, the control unit can adjust whether it is desired to heat or cool the interior of the housing.

[0019] At the atomic scale, an applied temperature gradient causes charge carriers in the material to diffuse from the hot side to the cold side. Because the direction of heating and cooling is determined by the polarity of the applied voltage, the thermoelectric element can be used as a temperature controller.

[0020] Due to the guide surface, a closed-loop air circuit is created within the milk analysis device, thereby generating a controlled temperature within the milk analysis device. By measuring the internal temperature with the temperature sensor and comparing it to a threshold value, a voltage can be applied to the thermoelectric element to control the temperature difference between the warm and cold sides of the thermoelectric element. Furthermore, the fan speed can be adjusted to regulate the air circulation within the milk analysis device, thereby regulating the internal temperature. Thus, a controlled temperature is achieved within the milk analysis device, which is consistently maintained below the temperature threshold value or within a desired temperature interval, enabling reliable biomarker testing on the milk analysis device. The desired temperature interval can be set to approximately 20-30 degrees Celsius.

[0021] In a first possible embodiment of the milk analysis device according to the first aspect, the milk analysis device can include an external heat exchange element arranged on the outside of the housing. Furthermore, the milk analysis device can include an internal heat exchange element arranged on the inside of the housing of the milk analysis device, adjacent to the thermoelectric element. The thermoelectric element of the milk analysis device can be arranged on the outside of the housing of the milk analysis device, with a first side adjacent to the external heat exchange element and a second side adjacent to the housing.

[0022] By having an external heat exchange element outside the housing of the milk analyzing device and an internal heat exchange element inside the housing of the milk analyzing device, which are placed adjacent to respective sides of the thermoelectric element, an efficient heat exchange with the environment is achieved.

[0023] In a second possible implementation of the milk analysis device according to the first possible implementation of the first aspect, the milk analysis device may further include a heat conducting plate arranged in the opening of the housing.

[0024] The heat conducting plate may advantageously be made of a material having advantageous heat conducting properties, such as aluminum, copper or an alloy comprising aluminum and / or copper.

[0025] Aluminum is a metal with excellent thermal conductivity, while being relatively inexpensive, lightweight, and easy to process. Its low melting temperature of 660°C facilitates casting. By placing aluminum plates in the openings of the housing, heat absorbed from the internal heat exchange element within the milk analysis device is transferred to the cold side of the thermoelectric element, and vice versa.

[0026] The temperature inside the milk analysis device is thereby controlled while maintaining the closed design of the heat-insulating housing of the milk analysis device.

[0027] Additionally, the second side of the thermoelectric element may be positioned adjacent to the outer side of the thermally conductive plate.The internal heat exchange element may be positioned adjacent to the inner side of the thermally conductive plate.

[0028] Due to the heat conducting plate, and by placing one side of the thermoelectric element adjacent to the outside of the heat conducting plate, the interior of the housing can also be heated or cooled when the thermoelectric element is positioned outside the housing, thereby regulating the temperature.

[0029] In a third possible embodiment of the milk analysis device according to the first aspect, or any embodiment thereof, the guide surface of the milk analysis device may further include a first section for guiding circulating air inside the housing toward an outlet of the receiving portion of the milk analysis device through the heat exchange element. The guide surface may further include a second section for guiding circulating air inside the housing backward from the outlet of the receiving portion of the milk analysis device toward the heat exchange element.

[0030] Thus, the guide surface of the milk analysis device is arranged to create a circuit for circulating air through the heat exchange element and the outlet of the receiving portion of the milk analysis device. The circulating air is directed through the outlet of the receiving portion toward the first portion of the cassette, toward the aperture / air guiding member of the cassette, where unused lateral flow rods are held. Thus, the temperature of the unused lateral flow rods in the cassette is effectively maintained within a predetermined or configurable temperature interval.

[0031] In a fourth possible embodiment of the milk analyzing device according to the first aspect or any embodiment thereof, the fan may be a radial fan arranged on the interior of the housing, the radial fan being configured to generate an air flow through the internal heat exchange element, thereby circulating the air within the housing.

[0032] The advantage of radial fans is that they are very energy-efficient and can achieve high pressures. Radial fans are particularly suitable for displacing air in overpressure situations and ensuring a stable laminar air flow.

[0033] In a fifth possible implementation of the milk analyzing device according to the first aspect or any of its embodiments, the temperature sensor may be arranged adjacent to the outlet of the receiving portion.

[0034] By measuring the temperature in the vicinity of the unused lateral flow rods in the cartridge, but with the temperature sensor being located in the milk analyzing device instead of in the cartridge, the temperature of the unused lateral flow rods may be estimated.

[0035] In a sixth possible embodiment of the milk analyzing device according to the first aspect or any embodiment thereof, the thermoelectric element may be arranged on one of the outer sides of the milk analyzing device.

[0036] Thermoelectric elements such as Peltier elements are very sensitive to liquids. By placing the thermoelectric elements on any side of the milk analysis device, moisture damage to the thermoelectric elements is avoided. As a result, the reliability of temperature control is improved.

[0037] In a seventh possible implementation of the milk analysis device according to the first aspect or any of the embodiments thereof, the housing enclosing the milk analysis device comprises a thermally insulating housing.

[0038] This makes it easier to maintain a consistent temperature within the housing by insulating the housing, for example by a layer of eg polystyrene foam or similar material or with an air gap between two parallel walls.

[0039] In an eighth possible embodiment of the milk analyzing device according to the first aspect or any of its embodiments, the guide surface is a part of an inner wall of the milk analyzing device, which part of the inner wall may be made by injection molding or a similar production process.

[0040] This ensures rapid production of milk analysis equipment.

[0041] In a ninth possible embodiment of the milk analysis device according to the first aspect, or any embodiment thereof, the control unit may be configured to compare the determined temperature with an upper temperature threshold set at approximately 30 degrees Celsius and a lower temperature threshold set at approximately 20 degrees Celsius. The control unit may also be configured to: when determining that the temperature inside the housing is lower than the lower temperature threshold, increase the current supplied to the thermoelectric element to increase the temperature; or when determining that the temperature inside the housing is higher than the upper temperature threshold, decrease the current supplied to the thermoelectric element to decrease the temperature.

[0042] Thanks to the temperature control, the temperature around the lateral flow rod in the cartridge can be maintained at a temperature between 20-30 degrees, resulting in more reliable biometric measurement results.

[0043] By the aspects described, biomarker values ​​of milk samples of animals on farm can be measured in an automated manner, but still reliably since excessive temperatures are avoided, thereby requiring minimal effort by the operator.

[0044] Other advantages and additional novel features will become apparent from the detailed description that follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Embodiments of the present invention will now be described in further detail with reference to the accompanying drawings, in which:

[0046] Figure 1 An example of a device for measuring biomarker values ​​of a milk sample of an animal is presented.

[0047] Figure 2A A cartridge according to an embodiment is shown inserted into a milk analysis device.

[0048] Figure 2B A portion of a strip of cassettes including lateral flow rods according to an embodiment is shown.

[0049] Figure 3A The housing of a milk analysis device and its temperature regulation features according to an embodiment are shown.

[0050] Figure 3B A cartridge according to an embodiment is shown inserted into a milk analysis device.

[0051] Figure 4 A cartridge including a lateral flow stick according to an embodiment is shown.

[0052] Figure 5A The housing and guide surfaces of a milk analysis device are shown.

[0053] Figure 5B The exit of the storage section of the milk analysis equipment is shown. DETAILED DESCRIPTION

[0054] The embodiments of the present invention described herein are defined as a milk analysis device that can be put into practice in the embodiments described below. However, these embodiments can be exemplified and implemented in many different forms and are not limited to the examples set forth herein; rather, illustrative examples of the embodiments are provided so that this disclosure will be thorough and complete.

[0055] Still other objects and features may become apparent from the following detailed description considered in conjunction with the accompanying drawings. However, it should be understood that the drawings are designed for illustrative purposes only and are not intended as a definition of the limitations of the embodiments disclosed herein, for which reference should be made to the appended claims. Furthermore, the drawings are not necessarily drawn to scale and, unless otherwise indicated, are intended merely to conceptually illustrate the structures and processes described herein.

[0056] Figure 1 A scene is shown with an animal 100 , which may be included in a herd of cows at a dairy farm.

[0057] "Animal" may be any type of domesticated female milk- and / or meat-producing mammal, such as cows, goats, sheep, horses, camels, dromedaries, primates, buffaloes, donkeys, reindeer, yaks, and the like.

[0058] Milk from the animal 100 may be extracted by a milking device, such as a milking robot or other milking apparatus, and may be provided to the milk analysis device 120 .

[0059] In some embodiments, the milk analysis device 120 may be releasably insertable into a milking device. Thus, there may be an interface between the milking device and the milk analysis device 120, for providing milk and possibly power to the milk analysis device 120 via the milking device.

[0060] The milk analyzing device 120 comprises various electronic devices and equipment, such as a camera, one or more pumps, tube elements for connecting to an interface of a milking device, a motor, a communication unit and the like.

[0061] The cartridge 130 can be removably inserted into or connected to the receiving portion 125 of the milk analysis device 120. The cartridge 130 can include a strip having a lateral flow stick / dry stick configured to indicate a biomarker value of a milk sample of the animal 100. In some embodiments, the cartridge 130 can be configured to be removably inserted into the milk analysis device 120 and held in place by a fastening member such as a snap lock, a magnet, a screw, etc., and the door of the milk analysis device 120 can be closed to enclose the cartridge 130 within the milk analysis device 120, thereby further securing the cartridge 130 in place.

[0062] Thus, a milk sample from animal 100 can be extracted from animal 100 by the milking device and provided to one of the lateral flow sticks on the belt of cassette 130 by the milk analysis device 120. The lateral flow stick can react to the presence and / or amount of one or more biomarkers, for example by changing color or color intensity. A camera in the milk analysis device 120 can capture an image through an opening in cassette 130. The captured image of the lateral flow stick can then be analyzed by a control unit, and the presence and / or amount of the biomarker in the milk sample can be estimated based on the color intensity.

[0063] In various embodiments, the biomarker measured may be, for example, progesterone, glycoprotein, estrogen, and / or gonadotropin-releasing hormone, or any other similar biomarker related to reproduction of the animal 100 .

[0064] Progesterone is a hormone that regulates several physiological functions of the animal 100. Progesterone can prepare the uterus for pregnancy, maintain pregnancy if fertilization occurs, and prevent the animal 100 from showing signs of persistent estrus and ovulation during pregnancy. For example, progesterone levels can rise at the beginning of pregnancy and can remain high throughout the pregnancy of the animal 100. Progesterone levels in milk samples can be used to monitor pregnancy, estrous cycles (estrus detection), and / or postpartum ovarian activity. For these reasons, it is interesting for farmers to detect and track progesterone levels in animals 100 on the farm.

[0065] However, in some embodiments, the biomarkers measured may include LDH (lactate dehydrogenase), BHB (beta-hydroxybutyrate), urea, and / or somatic cell count or other biomarkers related to the condition of the animal 100. In some embodiments, multiple biomarkers listed above may be measured. Alternatively, in some embodiments, a farmer may order a cartridge 130 comprising a certain lateral flow stick on a belt configured to measure a biomarker or set of biomarkers selected by the farmer; and / or different cartridges 130 comprising lateral flow sticks on a belt configured to measure different biomarkers or sets of biomarkers during different time periods of the year.

[0066] In some embodiments, the dosing module 135 can also be removably inserted into the service module 120. The dosing module 135 can include, for example, a needle and / or one or more pumps. A diluent container with a diluent can be located outside the dosing module 135.

[0067] Thus, the milk analyzing device 120 comprises several modules, such as the cartridge 130, the dosing module 135 and / or the liquid container, which, when they need to be updated or replaced, are replaced with new corresponding modules at specific time intervals, which can take place at different moments for the different modules or alternatively synchronously with each other.

[0068] The various modules, ie the dosing module 135 , the liquid container and / or the cartridge 130 may comprise fastening means, eg in the form of a snap-fit ​​arrangement, magnetic elements, threaded joints etc., arranged to connect the respective module to the milk analysis device 120 .

[0069] The modular structure of the proposed solution offers several advantages. By keeping the arrangement modular in terms of the dosing module 135, the liquid container, and the cartridge 130, costs, maintenance, and effort for the farmer can be minimized or at least reduced. Furthermore, by separating consumable materials, such as the milk analysis unit / measuring stick of the cartridge 130, from wear-prone components, such as the pump of the dosing module 135 and the electronics and instrumentation of the milk analysis device, the liquid container can be continuously replaced with another replacement liquid container, for example, by ordering it via a courier service or postal service.

[0070] However, when exposed to temperatures exceeding extreme threshold limits, e.g., above 30 degrees or below 20 degrees, the lateral flow rod of the cartridge 130 and possibly also the dosing module 135, the liquid container and / or other devices or components of the milk analysis device 120 may be affected, resulting in incorrect test results for the analysis (or extended test incubation times when the temperature is too low).

[0071] The temperature inside the milk analysis device 120 may increase due to many adverse factors, which may be difficult to predict and / or avoid, such as if the milk analysis device is placed near a heat generating device, exposed to incoming sunlight, etc.

[0072] The milk analysis device 120 according to the present solution is configured to determine and regulate the temperature within the milk analysis device 120, and thereby also the temperature of the lateral flow rods of the cartridge 130, specifically the temperature of unused lateral flow rods. Thus, by maintaining the temperature within a temperature threshold interval, the results of the biomarker test are trustworthy and reliable. The temperature threshold interval can be set, for example, between approximately 20-30 degrees Celsius. In various embodiments, the temperature threshold interval can be predetermined or configurable.

[0073] Figure 1 and Figure 2A A general overview of the environment in which the provided solution is intended to operate is depicted without going into too much detail in order to give the reader a rough overview. Figure 2B An example of the details of the entities involved, specifically the cassette 130 and the tape, and how the cassette and the tape interact with each other is disclosed in . Figures 3A-3B A milk analysis device 120 is disclosed, and Figure 4 Cassette 130 is shown. Figure 5A and 5B The cooperation and interaction between the guiding surface of the milk analysis device 120 and the outlet of the receiving part of the milk analysis device 120 is shown.

[0074] Figure 2AA scene showing a milk analysis device 120, a cartridge 130, and a dosing module 135 according to an embodiment is shown. The milk analysis device 120 includes electronics and equipment for determining biometric values ​​of a milk sample received from an animal 100, such as a camera 210, a tube element 220 for connection to a milking device, a motor, a communication unit 230, etc. In some embodiments, the dosing module 135 may include one or more pumps configured to act on the tube element 220 for advancing the milk sample through the tube element 220.

[0075] In the illustrated embodiment, the dosing module 135 may include a needle 250 for applying a milk sample through an opening in the cartridge 130 to the lateral flow sticks 180a, 180b, 180c on the strip 170 in the cartridge 130. The camera 210 may then align the needle 250 with the next unused lateral flow stick 180a, 180b, 180c on the strip 170 of the cartridge 130.

[0076] The cassette 130 may include a first portion 131 for holding unused lateral flow rods 180a, 180b, 180c and a second portion 132 for holding used lateral flow rods 180a, 180b, 180c.

[0077] The camera 210 of the milk analysis device 120 can capture images of the lateral flow sticks 180a, 180b, 180c of the carrier belt 170 through the opening, and based on these images, a motor outside the box can adjust the belt 170 relative to the needle 250 to position a new lateral flow stick 180a, 180b, 180c on which a new test is to be performed.

[0078] The communication unit 230 may communicate with the control unit 150 , the database 140 , and / or the output unit 160 through a wired or wireless communication interface.

[0079] In some embodiments, such a wireless communication interface may include or at least be inspired by a wireless communication technology, such as Wi-Fi, 3GPP LTE, Bluetooth (BT), to name a few possible examples of wireless communication.

[0080] The camera 210 of the milk analysis device 120 is configured to inspect one of the lateral flow sticks 180a, 180b, 180c on the belt 170 of the cassette 130 through the opening of the cassette 130. The camera 210 can also help align the needle 250 and the position of the lateral flow sticks 180a, 180b, 180c on the belt 170 by adjusting the belt 170.

[0081] Furthermore, the milk analyzing device 120 further comprises a tube element 220 configured to receive a milk sample of the animal 100 via the milking device and to provide the milk sample to a needle 250 , ie the needle 250 comprised in the dosing module 135 .

[0082] In some embodiments, the dosing module 135 may further comprise at least one pump configured to act on the tube element 220 to provide the milk sample to the needle 250. The pump may thus act on the tube element 220 to propagate the milk sample through the tube element 220 to the needle 250 or to a mixing chamber 255 of the needle 250. The mixing chamber 255 may alternatively be located outside the needle 250.

[0083] The dosing module 135 may also include a liquid drain or outlet 195 that can collect liquid that has been output by the needle 250. In some embodiments, when only milk is included, the liquid can be returned to the milk production line. In other embodiments, when the milk has been mixed with a diluent, the liquid can be transported away from the cartridge 130 so as not to soak or contaminate other unused lateral flow rods 180a, 180b, 180c of the belt 170 on the cartridge 130.

[0084] As will be discussed, the control unit 150 is configured to monitor and regulate the temperature inside the housing 310 of the milk analysis device 120. Furthermore, the control unit 150 can be configured to determine biomarker values ​​for a milk sample of the animal 100 based on an analysis of images captured by the camera 210. In some embodiments, the control unit 150 can be included in the milk analysis device 120 or located external to the milk analysis device 120.

[0085] The database 140 may store the measured biometric values ​​of the animal 100 in association with an identification reference and / or a timestamp of the measurement for the animal 100. Other measurements and / or data related to the animal 100 may also be stored in the database 140, such as, for example, milk production as measured by a milk flow meter, activity, breed, parity, rumination, lactation, rest, feed intake, energy balance, days in milk, milk production, age, and possibly other similar animal status-related parameters.

[0086] Output unit 160 may be, for example, a cellular mobile phone, a fixed or portable computing device, a computer tablet, a display, a pair of smart glasses, smart contact lenses, an augmented reality device, a smart watch, or a similar device having a user interface and wireless communication capabilities.

[0087] The farmer can obtain a portion of the results of the biomarker measurement of the milk sample via the output unit 160. The farmer can thereby analyze the state of the animal 100, for example to check whether the animal 100 is in estrus in the case of a progesterone measurement.

[0088] In some embodiments, information about the temperature in the milk analysis device 120 can be sent to the farmer, and an alarm can be sent if a too high temperature is reached in the milk analysis device 120, for example because the control unit 150 cannot keep the temperature within the allowed temperature interval (e.g. 20-30 degrees). The fault can be the result of a hardware error in any of the components in question or, for example, an electrical disconnection.

[0089] When a deviation exceeding a first threshold limit is detected between a biomarker measurement result and a corresponding reference value, or when a temperature limit is exceeded, an alert can be output to the farmer. The alert can include, for example, a visual message, an audio message, a tactile signal, or a combination thereof, prompting the operator to further investigate the cause of the detected deviation. In some embodiments, where multiple people are working with the herd, the alert can be broadcast to multiple farmers and their corresponding associated output units 160.

[0090] Figure 2B A strip 170 according to an embodiment is shown. The cartridge 130, which can be releasably inserted into the milk analysis device 120, comprises a strip 170 which in turn comprises a plurality of lateral flow sticks 180a, 180b, 180c.

[0091] In some embodiments, the belt 170 may include, for example, 300-700 lateral flow rods 180a, 180b, 180c, or preferably about 400-600 lateral flow rods 180a, 180b, 180c. Thus, the belt 170 of the cassette 130 may include enough lateral flow rods 180a, 180b, 180c to test milk samples from a typical automatic milking robot for about one month.

[0092] The transverse flow bars 180a, 180b, 180c may be arranged at an inclination angle relative to an axis normal to the longitudinal axis of the belt 170. In some embodiments (non-limiting examples), the inclination angle may be, for example, 15 degrees or about 15 degrees or, for example, 10-30 degrees.

[0093] The openings 190a, 190b, 190c can be arranged between at least some of the lateral flow bars 180a, 180b, 180c, on the belt 170 or on the bottom film of the belt 170, i.e., between the welds of at least some of the lateral flow bars 180a, 180b, 180c on the bottom film. The openings 190a, 190b, 190c are configured to allow liquid to be transported away from the lateral flow bars 180a, 180b, 180c during cleaning or before applying the milk sample to the lateral flow bars 180a, 180b, 180c.

[0094] Milk from a first animal 100 may contaminate a milk sample from another subsequently tested animal. To avoid contamination or carryover, the tube and needle 250 can be flushed with milk from the animal 100 being tested before applying the milk sample to the lateral flow rods 180a, 180b, 180c. To prevent flushed milk from the animal 100 being tested from soaking and / or contaminating other, unused lateral flow rods 180a, 180b, 180c, flushing can be performed through the openings 190a, 190b, 190c of the belt 170, for example, by lowering the needle 250 through the openings 190a, 190b, 190c and capturing the flushed milk with a liquid ejector 195. The liquid ejector 195 can then transfer the liquid out of the cartridge 130 through the tube.

[0095] The belt 170 or the bottom film of the belt 170 may further include reference marks / marks 185a, 185b, 185c configured to help the camera 210 find the lateral flow rods 180a, 180b, 180c. The reference marks 185a, 185b, 185c may include, for example, holes, color markings, bar codes, simple geometric shapes, or the like.

[0096] Reference marks 185a, 185b, 185c can also help the camera 210 determine the advancement of the top film sheet reel to peel the top film of the lateral flow rod 180a, 180b, 180c enough to enable the milk sample to be applied to the lateral flow rod 180a, 180b, 180c without peeling the top film of the next lateral flow rod 180a, 180b, 180c.

[0097] In addition, the belt 170 or the bottom film of the belt 170 may include a first group 173 of forward holes 175, which are arranged at the first edge 171 of the belt 170; and a second group 174 of forward holes 175, which are arranged at the second edge 172 of the belt 170 or the bottom film of the belt 170.

[0098] Each transverse flow bar 180a, 180b, 180c can be arranged individually on the belt 170 or the bottom film of the belt 170 by means of a weld seam, and wherein the sealed transverse flow bars 180a, 180b, 180c are arranged at a certain distance from each other.

[0099] Figure 3A A milk analyzing device 120 and its various temperature regulation / maintenance features are shown in association with a milking device 110 according to an embodiment.

[0100] The milk analysis device 120 includes a housing 310 that encloses at least a portion of the milk analysis device 120. In some embodiments, the housing 310 may be thermally insulated.

[0101] The insulation can be made, for example, by arranging two walls at a distance from each other, wherein the distance comprises air, evacuated air ("vacuum"), polyurethane, fiberglass, polystyrene, polyethylene foam, polystyrene foam or similar material.

[0102] An advantage of insulating the housing 310 is that it is easier to maintain the temperature in the housing 310 within a temperature interval of, for example, between 20-30 degrees.

[0103] The cassette 130 and thus also the lateral flow sticks 180 a , 180 b , 180 c held therein and the sensitive electronics of the milk analysis device 120 can be held inside a temperature-regulated housing 310 .

[0104] In some embodiments, the milk analysis device 120 may further include an outside heat exchange element 330 arranged on the outside of the housing 310 of the milk analysis device 120 .

[0105] The milk analysis device 120 also includes a thermoelectric element 340. The thermoelectric element 340 may include a Peltier element, a solid-state refrigerator, a thermoelectric cooler, or similar devices. The thermoelectric element 340 utilizes the thermoelectric effect to convert a voltage into a temperature difference between a first side 341 and a second side 342 of the thermoelectric element 340 via a thermocouple. When a voltage is applied to the thermoelectric element 340, heat is transferred from one side 341 to the other side 342, creating a temperature difference between the two sides 341 and 342. At the atomic scale, the applied temperature gradient causes charge carriers in the material to diffuse from the first side 341 to the second side 342. Thus, the thermoelectric element 340 has a hot side and a cold side. The temperature difference between the first side 341 and the second side 342 of the thermoelectric element 340 is proportional to the applied voltage. Furthermore, the hot and cold sides of the thermoelectric element 340 can be reversed by reversing the voltage applied to the thermoelectric element 340. That is, the direction of heating and cooling is determined by the polarity of the applied voltage. The thermoelectric element 340 can thus be used as a temperature controller for the milk analysis device 120 .

[0106] The thermoelectric element 340 may be arranged on an outer side of the housing 310 of the milk analysis device 120 , with a first side 341 adjacent to the external heat exchange element 330 and a second side 342 adjacent to the housing 310 .

[0107] The milk analysis device 120 may further include an internal heat exchange element 350, which may be arranged on the inside of the housing 310 of the milk analysis device 120, adjacent to the second side 342 of the thermoelectric element 340. Additionally, the milk analysis device 120 may include a fan 360, which is arranged to circulate air inside the housing 310 of the milk analysis device 120.

[0108] In the illustrated embodiment, a fan 360 may be disposed within the interior of the housing 310 , the fan being used to generate an airflow across the interior heat exchange element 350 , which may be hot or cold, depending on whether heating or cooling is desired.

[0109] In some embodiments, fan 360 may be a radial fan disposed on the inside of housing 310 to blow air across internal heat exchange element 350. In other embodiments, fan 360 may include a cross flow fan, a tangential fan, a centrifugal fan, an axial flow fan, or the like.

[0110] Furthermore, the milk analysis device 120 may include Figure 3B , which serves to circulate air inside the housing 310 through the internal heat exchange element 350 when acted upon by the fan 360. In some embodiments, the guide surface 380 may be part of an inner wall of the milk analysis device 120. The interior of the housing 310 is a closed compartment.

[0111] The guiding surface 380 may comprise a plastic channel or wall for guiding the generated air flow inside the milk analysis device 120, in particular for guiding the air flow towards the most temperature sensitive parts or elements of the milk analysis device 120, and in particular the first part 131 of the cartridge 130, in which the unused lateral flow sticks 180a, 180b, 180c are held.

[0112] In some embodiments where the milk analysis device 120 comprises lateral flow bars 180a, 180b, 180c, the guide surface 380 may be arranged to guide air from the internal heat exchange element 350 to the lateral flow bars 180a, 180b, 180c.

[0113] The guide surface 380 may include a first section for guiding the circulating air inside the housing 310 toward the outlet of the receiving portion 125 of the milk analysis device 120 through the internal heat exchange element 350. Furthermore, the guide surface 380 may include a second section for guiding the circulating air inside the housing 310 backward from the outlet of the receiving portion 125 toward the internal heat exchange element 350.

[0114] Thus, the lateral flow sticks 180a, 180b, 180c may be included in a cassette 130 that is removably insertable into the receiving portion 125 of the milk analysis device 120. The cassette 130 may include an air guiding member 390 for guiding the temperature-regulated air provided by the guiding surface 380 through the outlet of the receiving portion 125 of the milk analysis device 120 to the unused lateral flow sticks 180a, 180b, 180c in the first portion 131 of the cassette 130 (e.g., on the belt 170), as shown. Figure 3B shown.

[0115] The milk analysis device 120 further comprises a temperature sensor 240, ie a thermometer, arranged inside the housing 310. In some embodiments, the temperature sensor 240 may be arranged adjacent to the outlet of the receiving portion 125 of the milk analysis device 120 and thereby also adjacent to the air guiding member 390 of the cartridge 130.

[0116] By taking temperature measurements in the first portion 131 of the cartridge 130 at locations close to the unused lateral flow rods 180a, 180b, 180c, temperature adjustments may be made based on the estimated temperatures of the unused lateral flow rods 180a, 180b, 180c.

[0117] By measuring the temperature inside housing 310 continuously or at specific time intervals, this temperature can be compared to a predetermined temperature threshold limit and then adjusted to maintain the temperature below the threshold limit or within a predetermined temperature interval, such as approximately 20-30 degrees.

[0118] The milk analysis device 120 may further include a control unit 150 or may be connected to the control unit. The control unit 150 may be located within the milk analysis device 120 or may be external to the milk analysis device. The control unit 150 may be configured to determine the temperature inside the housing 310 using the temperature sensor 240. Furthermore, the control unit 150 may be configured to compare the determined temperature with a temperature threshold limit or an upper temperature threshold limit set at approximately 30 degrees Celsius and / or a lower temperature threshold limit set at approximately 20 degrees Celsius.

[0119] Based on the results of the comparison, the control unit 150 can then adjust the current supplied to the thermoelectric element 340. When the second side 342 of the thermoelectric element 340 is the hot side, the first side 341 of the thermoelectric element 340 is the cold side, and vice versa. The hot and cold sides of the thermoelectric element 340 can be reversed by reversing the current supplied to the thermoelectric element 340. Thus, the control unit 150 can adjust whether it is desired to heat or cool the interior of the housing 310.

[0120] The degree of heating / cooling of the respective sides 341 , 342 of the thermoelectric element 340 , respectively, may be increased by increasing the current provided to the thermoelectric element 340 (or vice versa).

[0121] The control unit 150 may include a processing circuit system that includes one or more instances of processing circuitry, i.e., a central processing unit (CPU), a processor, a processing unit, an application-specific integrated circuit (ASIC), a microprocessor, a graphics processing unit (GPU), or other processing logic that can interpret and execute instructions.

[0122] The communication between the control unit 150 and the temperature sensor 240 may be performed through a wired or wireless communication interface.

[0123] In some embodiments, the milk analysis device 120 may include a heat conducting plate 320 disposed in the opening of the housing 310 to transfer heat into / out of the milk analysis device 120. The second side 342 of the thermoelectric element 340 may be positioned adjacent to an outer side of the heat conducting plate 320, while the internal heat exchange element 350 may be positioned adjacent to an inner side of the heat conducting plate 320.

[0124] The heat conducting plate 320 may advantageously be made of a material having good heat conducting properties, such as copper, aluminum, boron arsenide or similar materials, or alloys comprising any of these materials, or any other material having similar properties.

[0125] Aluminum is a metal with excellent thermal conductivity, while being relatively inexpensive, lightweight, and easy to process. Its low melting temperature of 660°C facilitates casting. By placing the heat conducting plate 320 within the opening of the housing 310, heat / cold absorbed from the internal heat exchange element 350 within the milk analysis device 120 can be transferred to the second side 342 of the thermoelectric element 340. This allows for temperature control within the milk analysis device 120 while maintaining the enclosed design of the housing 310 of the milk analysis device 120.

[0126] The enclosed design of the housing 310 and the milk analysis device 120 prevents dust, moisture, and the like (i.e., particles that could affect the performance of the electronics and / or the lateral flow rods 180a, 180b, 180c) from entering the housing 310. Due to the presence of the heat conducting plate 320, heat can also be transferred into or removed from the housing 310 of the milk analysis device 120, as the housing 310 creates a closed compartment. Thus, the temperature within the housing 310 can be regulated without allowing dust, dirt, insects, or the like to enter the housing 310 of the milk analysis device 120.

[0127] The thermoelectric element 340 can be arranged on one of the outer sides of the milk analysis device 120. This has the advantage of preventing moisture damage to the humidity-sensitive thermoelectric element 340. This fundamentally reduces the risk or likelihood of moisture damage. The thermoelectric element 340, such as a Peltier element, is very sensitive to liquids. This improves the reliability of the milk analysis device 120.

[0128] As a result, the temperature within the milk analysis device 120 and / or cartridge 130 can be maintained at a constant level, for example, between 20-30 degrees Celsius. The predetermined temperature threshold limit can be set, for example, to 25 degrees Celsius, 28 degrees Celsius, 24-30 degrees Celsius, etc. If the temperature measured by the temperature sensor 240 exceeds the temperature threshold limit, the control unit 150 can be activated to cool the temperature. In addition, any moisture entering the cartridge 130 or milk analysis device 120 can condense on the internal heat exchange element 350 within the milk analysis device 120, dripping and leaving the housing 310 of the milk analysis device 120 through a drain pipe at the bottom.

[0129] Figure 4 Details of a cartridge 130 are shown, which can be releasably inserted into the receiving portion 125 of the milk analyzing device 120 .

[0130] The box 130 may include a first portion 131 for holding unused transverse flow rods 180a, 180b, 180c and a second portion 132 for holding used transverse flow rods 180a, 180b, 180c. Furthermore, the box 130 may include an air guide member 390 disposed on the first portion 131 of the box 130, wherein the unused transverse flow rods 180a, 180b, 180c are held. The transverse flow rods 180a, 180b, 180c may be disposed separately (i.e., individually) on the belt 170 at a distance from one another.

[0131] In the illustrated embodiment, the belt 170 includes a bottom film comprising the lateral flow bars 180a, 180b, 180c, the bottom film being covered with a top film 410 configured to seal the lateral flow bars 180a, 180b, 180c to the belt 170.

[0132] Additionally, in the illustrated embodiment, a top film reel 430 is included that is arranged to peel and collect the top film 410 of the belt 170. The top film 410 can be peeled just prior to applying the milk sample to the peeling lateral flow rods 180a, 180b, 180c.

[0133] Additionally, the cassette 130 may include a capstan spool 470 including teeth 475 for engaging the advancement hole 175 on the belt 170 .

[0134] The cartridge 130 may further include a top cover 480 including an opening 135 configured to enable the needle 250 of the milk analysis device 120 to be inserted to apply a milk sample from the animal 100 to one of the lateral flow rods 180a, 180b, 180c to which the top film 410 has been peeled.

[0135] The top cover 480 may include at least one pressure applying member 482 arranged to act on the belt 170 to keep the belt at a predetermined distance from the top cover 480. Thereby, the camera 210 can focus on the lateral flow bars 180a, 180b, 180c because the lateral flow bars are always located at the same distance from the camera 210. The pressure applying member 482 may include a spring 486 or a flexible material and a belt interface unit 484.

[0136] Additionally, the cap 480 may act on the belt 170 to hold the forward hole 175 on the belt 170 in position at the teeth 475 on the capstan spool 470. Thus, the cap 480 may be shaped to hold the forward hole 175 on the belt 170 in position at the teeth 475 on the capstan spool 470.

[0137] Some embodiments of the cassette 130 may include a tape support member 320 arranged to guide the tape 170 on a track between the tape dispensing reel and the capstan reel 470. The tape support member 420 may ensure that the tape 170 remains a predetermined distance from the camera 210, thereby enabling the camera 210 to focus on the lateral flow bars 180a, 180b, 180c.

[0138] In some embodiments, the belt 170 can include, for example, 300-700 lateral flow rods 180a, 180b, 180c or preferably about 400-600 lateral flow rods 180a, 180b, 180c. Thus, the belt 170 of the box 130 can include enough lateral flow rods 180a, 180b, 180c to test milk samples of a general automatic milking robot for about a month. The box 130 with the belt 170 and lateral flow rods 180a, 180b, 180c can then be wasted and, for example, replaced with another box through a service subscription. In some embodiments, the box 130 can be recycled; that is, the used box 130 can be opened and the used belt 170 can be removed from the used box 130. Then, a new, unused belt 170 with lateral flow rods 180a, 180b, 180c can be inserted into the box 130, and the box 130 can be reassembled.

[0139] The lateral flow rods 180a, 180b, 180c can each be designed for single use.In some embodiments, the lateral flow rods 180a, 180b, 180c of the strip 170 can be configured to change color or color nuances when exposed to a biomarker.

[0140] After a predetermined or configurable time period, the camera 210 in the milk analysis device 120 can capture an image of the lateral flow stick 180a, 180b, 180c in question. The color or color intensity of the lateral flow stick 180a, 180b, 180c on the captured image can then be analyzed by the control unit 150, where different color intensities can be associated with certain biomarker levels of the milk sample.

[0141] In some embodiments, the milk sample may be mixed with a diluent, such as in a mixing chamber 255 , before being applied to the lateral flow rods 180 a , 180 b , 180 c on the belt 170 .

[0142] In some embodiments, the box 130 may be sealed from the environment and thereby create a climate chamber, wherein the climate environment prevails in the box 130. The box 130 is thereby isolated from environmental influences of dust, dirt, liquids, etc. on the farm.

[0143] As the belt 170 is moved to place the lateral flow rods 180a, 180b, 180c to be used in alignment with the needles 250, the milk / diluent mixture may be applied to the lateral flow rods 180a, 180b, 180c.

[0144] An advantage of the disclosed solution is that it becomes very operator friendly by partitioning between the milk analysis device 120 comprising the camera, motor, pump and other electronics and / or equipment and one or more cartridges or modules 130, 460 comprising disposable materials.

[0145] The cartridge 130 may include lateral flow sticks 180a, 180b, 180c, etc., which are used to support the farm for some predetermined period of time, such as one month, two months, etc. Before the end of the period, the supplier may provide the farm with a new cartridge 130, which the operator may easily place into the milk analysis device 120 without having to interact with the sensitive electronics of the milk analysis device 120. The used cartridge 130 may then be disposed of.

[0146] Figure 5A A guide surface 380 is shown, which may optionally be part of an inner wall of the milk analysis device 120, for example produced by injection molding or similar techniques. The guide surface 380 may include a first section for guiding the circulating air inside the housing 310 through the internal heat exchange element 350 towards the outlet 510 of the receiving portion 125, such as Figure 5B shown.

[0147] The guide surface 380 may further include a second section for guiding the circulating air inside the housing 310 backward from the outlet 510 of the receiving portion 125 toward the internal heat exchange element 350 .

[0148] When Figure 2A 、 3B When the cartridge 130 shown in FIG4 is releasably inserted into the receiving portion 125 of the milk analyzing apparatus 120 , the air guiding member 390 arranged on the first portion 131 of the cartridge 130 is positioned adjacent to the outlet 510 of the receiving portion 125 .

[0149] The air guided to the outlet 510 of the storage portion 125 through the guide surface 380 can thereby be further guided toward the first portion 131 of the box 130 via the air guiding member 390, wherein unused lateral flow rods 180a, 180b, 180c are retained, and the unused lateral flow rods can thereby be maintained within a predetermined temperature interval of 20-30 degrees.

[0150] exist Figure 1 、 Figure 2A 、 Figure 2B 、 Figure 3A 、 Figure 3B 、 Figure 4 、 Figure 5A and / or Figure 5BThe embodiments shown in any one of them, or parts thereof, may be advantageously combined with each other to achieve further benefits.

[0151] The terminology used in the description of the embodiments as illustrated in the accompanying drawings is not intended to be limiting of the described cartridge 130, milk analysis device 120 and / or control unit 150. Various changes, substitutions and / or alterations may be made without departing from the embodiments of the invention as defined by the appended claims.

[0152] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. As used herein, the term "or" should be interpreted as a mathematical OR, that is, as an inclusive disjunction; rather than as a mathematical exclusive OR (XOR), unless expressly stated otherwise. In addition, the singular forms "a", "an" and "the" should be interpreted as "at least one", and thus may also include multiple entities of the same kind, unless expressly stated otherwise. It should be further understood that the terms "includes", "comprises", "including" and / or "comprising" specify the presence of stated features, actions, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, actions, integers, steps, operations, elements, components and / or groups thereof. A single unit, such as a processor, may perform the functions of several items recited in the claims. The mere fact that certain measures or features are recited in mutually different dependent claims, shown in different drawings, or discussed in connection with different embodiments does not indicate that a combination of these measures or features cannot be used to advantage. The computer program may be stored / distributed on a suitable medium, such as an optical storage medium or solid-state medium provided together with or as part of other hardware, but may also be distributed in other forms, such as via the Internet or other wired or wireless communication systems.

Claims

1. A milk analysis device (120) associated with a milking device (110), the milk analysis device being configured to receive a cartridge (130) that is removably inserted into the milk analysis device (120); wherein the milk analysis device (120) comprises: a receiving portion (125) configured to detachably receive the box (130); a housing (310) enclosing at least a portion of the milk analysis device (120); Thermoelectric element (340); an internal heat exchange element (350) disposed adjacent to the thermoelectric element (340); a fan (360) arranged to circulate air inside the housing (310) of the milk analysis device (120); a temperature sensor (240) arranged inside the housing (310) of the milk analysis device (120); a guide surface (380) of the milk analyzing device (120) for guiding circulating air inside the housing (310) toward the outlet (510) of the receiving portion (125) via the internal heat exchange element (350); and A control unit (150), the control unit being configured to: determining the temperature inside the housing (310) by means of the temperature sensor (230); comparing the determined temperature to a temperature threshold limit; and adjusting the current provided to the thermoelectric element (340) based on the comparison, The fan (360) is a radial fan, which is arranged on the inside of the housing (310) and is used to generate an air flow through the internal heat exchange element (350), thereby circulating the air in the housing (310).

2. The milk analysis device (120) according to claim 1, wherein the milk analysis device (120) comprises: an external heat exchange element (330) arranged on an outer side of the housing (310); The internal heat exchange element (350) is arranged on the inner side of the housing (310) of the milk analysis device (120) adjacent to the thermoelectric element (340); and The thermoelectric element (340) is arranged on the outer side of the housing (310) of the milk analysis device (120), wherein a first side (341) is adjacent to the external heat exchange element (330) and a second side (342) is adjacent to the housing (310).

3. The milk analysis device (120) according to claim 2, comprising: A heat conducting plate (320) is arranged in the opening of the housing (310); and wherein the second side (342) of the thermoelectric element (340) is positioned adjacent to the outer side of the heat conducting plate (320); and the internal heat exchange element (350) is positioned adjacent to the inner side of the heat conducting plate (320).

4. The milk analysis device (120) according to any one of claims 1 to 3, wherein the guide surface (380) comprises: a first section for guiding circulating air inside the housing (310) toward the outlet (510) of the receiving portion (125) through the internal heat exchange element (350); and A second section is provided for guiding the circulating air inside the housing (310) backward from the outlet (510) of the receiving portion (125) toward the internal heat exchange element (350).

5. The milk analysis device (120) according to any one of claims 1 to 4, wherein the temperature sensor (230) is arranged adjacent to the outlet (510) of the receiving portion (125).

6. The milk analysis device (120) according to any one of claims 1 to 5, wherein the thermoelectric element (340) is arranged on one of the outer sides of the milk analysis device (120).

7. The milk analysis device (120) according to any one of claims 1 to 6, wherein the housing (310) enclosing the milk analysis device (120) comprises a heat-insulating housing (310).

8. The milk analysis device (120) according to any one of claims 1 to 7, wherein the guide surface (380) is a part of an inner wall of the milk analysis device (120).

9. The milk analysis device (120) according to any one of claims 1 to 8, wherein the control unit (150) is configured to: comparing the determined temperature to an upper temperature threshold set at approximately 30 degrees and a lower temperature threshold set at approximately 20 degrees; and When it is determined that the temperature inside the housing (310) is lower than the lower temperature threshold, increasing the current supplied to the thermoelectric element (340) to increase the temperature; or When it is determined that the temperature inside the housing (310) is higher than the upper temperature threshold, the current supplied to the thermoelectric element (340) is reduced to lower the temperature.

10. The milk analysis device (120) according to any one of claims 1 to 9, wherein the control unit (150) is configured to: The heating and / or cooling direction of the thermoelectric element (340) is adjusted by adjusting the polarity of the voltage applied to the thermoelectric element (340).

11. The milk analysis device (120) according to claim 10, wherein the control unit (150) is configured to increase the temperature output of the thermoelectric element (340) by increasing the current provided to the thermoelectric element (340).

Images