Sample analyzer fault self-diagnosis method and sample analyzer

Abstract

The present application relates to a method for self-diagnosing faults in a sample analyzer and the sample analyzer. The sample analyzer comprises a first device and a second device for heating a sample, the first device comprising a first heater and a first temperature sensor, and the second device comprising a second heater and a second temperature sensor; and a temperature control board connected to the first heater, the first temperature sensor, the second heater, and the second temperature sensor via the temperature control board. The method comprises adjusting the temperatures of the first and second devices to achieve self-diagnosis of faults in the sample analyzer. The method enables a user to quickly identify the cause of abnormal temperature control in the analyzer, thereby improving efficiency and accuracy.

Description

Technical Field

[0001] The present application relates to the field of sample analyzers, and in particular to a method for self-diagnosis of faults of sample analyzers. Background Art

[0002] Sample analyzers are usually equipped with multiple reaction devices or measuring devices. For example, a hematology analyzer is usually equipped with a white blood cell (WBC) incubation pool and a red blood cell (RET) incubation pool. The reaction device or measuring device is actually a temperature control device with a heater and a temperature sensor. Since the appearance of different temperature control devices is basically the same, the main difference lies in the different reagents used, and they are arranged together in the overall layout of the machine. Therefore, there is a risk of cross-assembly errors between multiple temperature control devices. However, different temperature control devices require independent temperature control. If the temperature control is abnormal or inaccurate, the results will be abnormal, which will bring risks to clinical testing.

[0003] Currently, checking whether each temperature control device is functioning normally generally relies on manual inspection. However, manual inspection has many problems: the temperature control device is located inside the machine, making it difficult to inspect, resulting in low efficiency and prone to errors. Summary of the Invention

[0004] The purpose of the present invention is to address the defects in the prior art and provide a method for self-diagnosis of sample analyzer faults and a sample analyzer, which can efficiently and accurately determine whether the sample analyzer has temperature control abnormalities and give an alarm prompt.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a method for self-diagnosing faults in a sample analyzer, the sample analyzer comprising a first device and a second device for heating a sample, the first device comprising a first heater and a first temperature sensor, the second device comprising a second heater and a second temperature sensor; and a temperature control board connected to the first heater, the first temperature sensor, the second heater, and the second temperature sensor. The method comprises:

[0007] Sending a signal through the temperature control board to instruct the first heater to heat the first device;

[0008] The first temperature sensor detects the temperature of the first device;

[0009] calculating a temperature change value of the first device;

[0010] If the temperature of the first device does not rise, an alarm is given.

[0011] In one embodiment, the method further comprises:

[0012] If the temperature of the first device rises, a signal is sent through the temperature control board to instruct the second heater to heat the second device;

[0013] The second temperature sensor detects the temperature of the second device;

[0014] calculating a temperature change value of the second device;

[0015] If the temperature of the second device does not rise, an alarm is given.

[0016] In one embodiment, the method further comprises:

[0017] If the temperature of the first device rises, a signal is sent through the temperature control board to instruct the first heater to stop heating the first device and cool the first device;

[0018] The first temperature sensor detects the temperature of the first device;

[0019] calculating a temperature change value of the first device;

[0020] If the temperature drop of the first device is less than or equal to a threshold value, an alarm is given.

[0021] In one embodiment, the first device is cooled by passing a liquid through the first device, wherein the liquid includes at least one of a diluent, pure water, and deionized water, and the passing through the first device includes at least one of injecting into the first device and flowing around the first device.

[0022] In a second aspect, the present invention provides a method for self-diagnosing faults in a sample analyzer, the sample analyzer comprising a first device and a second device for heating a sample, the first device comprising a first heater and a first temperature sensor, the second device comprising a second heater and a second temperature sensor; and a temperature control board connected to the first heater, the first temperature sensor, the second heater, and the second temperature sensor. The method comprises:

[0023] performing a cooling process on the first device;

[0024] sending a signal through the temperature control board to instruct the second heater to heat the second device;

[0025] The first temperature sensor and the second temperature sensor detect temperatures of the first device and the second device;

[0026] Calculating temperature changes of the first device and the second device;

[0027] If the temperature drop of the first device is greater than the threshold value and the temperature of the second device increases, the temperature control of the analyzer is normal. If not, an alarm prompt is given.

[0028] In one embodiment, the first device is cooled by passing a liquid through the first device, wherein the liquid includes at least one of a diluent, pure water, and deionized water, and the passing through the first device includes at least one of injecting into the first device and flowing around the first device.

[0029] In one embodiment, the method further includes: before cooling the first device, sending a signal through the temperature control board to instruct the first heater and the second heater to heat the first device and the second device to a preset temperature.

[0030] In one embodiment, the method further includes further identifying a specific situation in which the heater and the temperature sensor are incorrectly connected after the alarm prompt is given:

[0031] If the temperature of the first device increases and the temperature drop of the second device is greater than a threshold, the first heater and the second heater are correctly connected to the temperature control board, and the first temperature sensor and the second temperature sensor are incorrectly connected to the temperature control board.

[0032] In one embodiment, the method further includes further identifying a specific situation in which the heater and the temperature sensor are incorrectly connected after the alarm prompt is given:

[0033] When the heating power of the heater is greater than the cooling power, if the temperature of the first device increases, the temperature drop value of the second device is less than or equal to a threshold value;

[0034] When the heating power of the heater is less than the cooling power, if the temperature drop value of the first device is greater than a threshold value, and the temperature drop value of the second device is less than or equal to a threshold value,

[0035] The first temperature sensor and the second temperature sensor are correctly connected to the temperature control board, and the first heater and the second heater are incorrectly connected to the temperature control board.

[0036] In one embodiment, the method further includes further identifying a specific situation in which the heater and the temperature sensor are incorrectly connected after the alarm prompt is given:

[0037] When the heating power of the heater is greater than the cooling power, if the temperature drop value of the first device is less than or equal to a threshold value, the temperature of the second device increases;

[0038] When the heating power of the heater is less than the cooling power, if the temperature drop value of the first device is less than or equal to the threshold, and the temperature drop value of the second device is greater than the threshold,

[0039] Then the first heater, the second heater, the first temperature sensor, the second temperature sensor and the temperature control board are all incorrectly connected.

[0040] In a third aspect, the present invention provides a sample analyzer, comprising:

[0041] A first device and a second device for heating a sample are provided, wherein the first device has a first heater and a first temperature sensor, and the second device has a second heater and a second temperature sensor;

[0042] a temperature control plate connected to the first heater, the first temperature sensor, the second heater, and the second temperature sensor;

[0043] A fault diagnosis module sends a signal through the temperature control board to instruct the first heater to heat the first device; obtains temperature information detected by the first temperature sensor and calculates a temperature change value of the first device; and issues an alarm if the temperature of the first device does not rise.

[0044] In a fourth aspect, the present invention provides a sample analyzer, comprising:

[0045] A first device and a second device for heating a sample are provided, wherein the first device has a first heater and a first temperature sensor, and the second device has a second heater and a second temperature sensor;

[0046] a temperature control plate, connected to the first heater, the first temperature sensor, the second heater, and the second temperature sensor through the temperature control plate;

[0047] A fault diagnosis module is provided, wherein the diagnostic module cools down the first device; sends a signal through the temperature control board to instruct the second heater to heat the second device; obtains temperature information detected by the first temperature sensor and the second temperature sensor and calculates the temperature change value of the first device and the second device; if the temperature drop value of the first device is greater than a threshold value and the temperature of the second device increases, the analyzer temperature control is normal; otherwise, an alarm prompt is given.

[0048] In one embodiment, the analyzer further includes a first liquid circuit component, and the diagnostic module controls the first liquid circuit component to make the liquid pass through the first device, the liquid includes at least one of a diluent, pure water, and deionized water, and the passing through the first device includes at least one of being injected into the first device and flowing around the first device.

[0049] In one embodiment, the first fluid circuit component is a valve, a pump, or a syringe.

[0050] The technical solution implemented in this invention uses temperature change information from different temperature control devices to determine whether the sample analyzer has temperature control anomalies. If a temperature control anomaly occurs, the user can quickly identify the problem, avoiding unnecessary time and effort, and improving efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0052] Figure 1 A schematic diagram of the temperature control device and connected devices of the sample analyzer;

[0053] Figure 2 Provide a schematic diagram for correctly connecting the heater and temperature sensor to the temperature control board;

[0054] Figure 3 This is a diagram showing that the heater is correctly connected to the temperature control board, but the temperature sensor is incorrectly connected to the temperature control board;

[0055] Figure 4 This is a diagram showing that the temperature sensor is correctly connected to the temperature control board, but the heater is incorrectly connected to the temperature control board.

[0056] Figure 5 This is a schematic diagram showing incorrect connections between the heater and temperature sensor and the temperature control board. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0058] The “threshold value” mentioned herein refers to a temperature drop value caused by natural cooling of the first device 104 or the second device 105 .

[0059] like Figure 1 As shown, the sample analyzer includes a first device 104 for heating a sample, a second device 105, a temperature control board 116, and a fault diagnosis module. The first device 104 includes a first heater 108 and a first temperature sensor 109. The first heater 108 heats the first device 104, and the first temperature sensor 109 detects the temperature of the first device 104. The second device 105 includes a second heater 110 and a second temperature sensor 111. The second heater 110 heats the second device 105, and the second temperature sensor 111 detects the temperature of the second device 105. The temperature control board 116 is connected to the first heater 108, the first temperature sensor 109, the second heater 110, and the second temperature sensor 111 via connecting wires 112, 113, 114, and 115, respectively. Preferably, the temperature control board 116 has temperature control board interfaces 117, 118, 119, and 120, which are connected to the first heater 108, the first temperature sensor 109, the second heater 110, and the second temperature sensor 111 via connecting lines 112, 113, 114, and 115. The analyzer sends a signal through the temperature control board 116 to instruct the first heater 108 and the second heater 110 to heat the first device 104 and the second device 105.

[0060] Furthermore, the sample analyzer further includes a first fluid circuit component 102 and a second fluid circuit component 103, wherein the first fluid circuit component 102 and the second fluid circuit component 103 are quantitative and transfer devices. Preferably, the quantitative and transfer devices are valves, pumps, or syringes. The first fluid circuit component 102 directs liquid through the first device 104. The second fluid circuit component 103 directs liquid through the second device 105. The liquid includes at least one of a diluent, purified water, and deionized water. Passing through the first device 104 includes at least one of injection into the first device 104 and flow around the first device 104. Passing through the second device 105 includes at least one of injection into the second device 105 and flow around the second device 105. The liquid is stored in a liquid storage tank 101.

[0061] Furthermore, the sample analyzer includes a third fluid path component 106 and a fourth fluid path component 107. The third fluid path component 106 and the fourth fluid path component 107 are quantitative and transfer devices. Preferably, the quantitative and transfer devices are valves, pumps, or syringes. The liquid is discharged through the third fluid path component 106 and the fourth fluid path component 107.

[0062] In one embodiment, see Figures 1 to 5After the sample analyzer starts the fault self-diagnosis function, it sends a signal through the temperature control board 116 to instruct the first heater 108 to heat the first device 104. Preferably, the first heater 108 is turned on to heat the first device 104 through the temperature control board interface 117;

[0063] The first temperature sensor 109 detects the temperature of the first device 104;

[0064] Calculating the temperature change value of the first device 104 within a period of time, preferably, the period of time is 15 seconds, 30 seconds, 45 seconds and 60 seconds;

[0065] See also Figure 2 and Figure 5 If the temperature of the first device 104 rises, for example, by more than 1°C, the analyzer's temperature control is functioning properly, meaning that the first heater 108, first temperature sensor 109, second heater 110, and second temperature sensor 111 are all correctly wired. The same situation will occur if the first heater 108, first temperature sensor 109, second heater 110, and second temperature sensor 111 are all incorrectly connected to the temperature control board 116. It is generally considered that the likelihood of all heaters, temperature sensors, and temperature control board 116 being incorrectly connected simultaneously is very low. This risk is accepted to shorten the diagnostic process and improve diagnostic efficiency.

[0066] See also Figure 3 and Figure 4 , if the temperature of the first device 104 does not rise, that is, the temperature value of the first device 104 remains unchanged (or due to the influence of ambient temperature, there is a small change that can be regarded as unchanged, such as ±0.2°C), then the temperature control of the sample analyzer is abnormal and an alarm prompt is given. At this time, it may be that the first heater 108, the second heater 110 is incorrectly connected to the temperature control board 116, or the first temperature sensor 109, the second temperature sensor 111 is incorrectly connected to the temperature control board 116. Generally, whether the heater is incorrectly connected to the temperature control board 116 or the temperature sensor is incorrectly connected to the temperature control board 116, further manual inspection and correction are required. Therefore, in order to simplify the solution, shorten the diagnosis time and improve efficiency, further analysis of whether the heater connection is incorrect or the temperature sensor connection is incorrect is no longer performed.

[0067] Furthermore, the sample analyzer can also diagnose the temperature control of the second device 105 .

[0068] If the temperature value of the first device 104 increases, a signal is sent through the temperature control board 116 to instruct the second heater 110 to heat the second device 105. Preferably, the second heater 110 is turned on through the temperature control board interface 119 to heat the second device 105.

[0069] The second temperature sensor 111 detects the temperature of the second device 105;

[0070] Calculating the temperature change value of the second device 105 within a period of time, preferably, the period of time is 15 seconds, 30 seconds, 45 seconds and 60 seconds;

[0071] See also Figure 2 and Figure 5 If the temperature of the second device 105 rises, for example, by more than 1°C, the sample analyzer's temperature control is functioning properly, meaning that the first heater 108, first temperature sensor 109, second heater 110, and second temperature sensor 111 are all correctly wired. The same situation will occur if the first heater 108, first temperature sensor 109, second heater 110, and second temperature sensor 111 are all incorrectly connected to the temperature control board 116. It is generally believed that the likelihood of all heaters, temperature sensors, and temperature control board 116 being incorrectly connected simultaneously is very low. This risk is accepted to shorten the diagnostic process and improve diagnostic efficiency.

[0072] See also Figure 3 and Figure 4 , if the temperature of the second device 105 does not rise, that is, the temperature value of the second device 105 remains unchanged (or due to the influence of ambient temperature, there is a small change that can be regarded as unchanged, such as ±0.2°C), then the temperature control of the sample analyzer is abnormal and an alarm prompt is given. At this time, it may be that the first heater 108, the second heater 110 is incorrectly connected to the temperature control board 116, or the first temperature sensor 109, the second temperature sensor 111 is incorrectly connected to the temperature control board 116. Generally, whether the heater is incorrectly connected to the temperature control board 116 or the temperature sensor is incorrectly connected to the temperature control board 116, further manual inspection and correction are required. Therefore, in order to simplify the solution, shorten the diagnosis time and improve efficiency, further analysis of whether the heater connection is incorrect or the temperature sensor connection is incorrect is no longer performed.

[0073] For further information, see Figure 1 and Figure 5 The sample analyzer further includes a method for identifying a situation in which the heater, the temperature sensor, and the temperature control board 116 are all incorrectly connected.

[0074] If the temperature of the first device 104 rises, the temperature control board 116 sends a signal instructing the first heater 108 to stop heating the first device 104, thereby cooling the first device 104. Preferably, the first heater 108 is turned off via the temperature control board interface 117, thereby stopping the heating of the first device 104. Alternatively, the first device 104 can be cooled by: the first fluid path component 102 allows a liquid to pass through the first device 104. The liquid includes at least one of a diluent, purified water, and deionized water. Passing through the first device includes at least one of injecting into the first device 104 and flowing around the first device 104.

[0075] The first temperature sensor 109 detects the temperature of the first device 104;

[0076] Calculating the temperature change value of the first device 104 within a period of time, preferably, the period of time is 15 seconds, 30 seconds, 45 seconds and 60 seconds;

[0077] See also Figure 5 If the temperature value of the first device 104 decreases, for example, by more than 1°C, the sample analyzer's temperature control is normal. If the temperature value detected by the first device 104 remains unchanged (a small change in ambient temperature is considered unchanged, for example, a temperature change of ±0.2°C), that is, the temperature decrease is less than or equal to a threshold value, for example, less than 1°C, an alarm is issued. At this point, it is recognized that both the heater and the temperature sensor are incorrectly connected.

[0078] In another embodiment, see Figures 1 to 5 After the sample analyzer starts the fault self-diagnosis function, the first device 104 is cooled. Optionally, the first device 104 can be cooled by: passing a liquid through the first device 104 via the first fluid path component 102, the liquid including at least one of a diluent, pure water, and deionized water, and passing the liquid through the first device 104 including at least one of injecting the liquid into the first device 104 and flowing the liquid around the first device 104;

[0079] Sending a signal through the temperature control board 116 to instruct the second heater 110 to heat the second device 105. Preferably, turning on the second heater 110 to heat the second device 105 through the temperature control board interface 119;

[0080] The first temperature sensor 109 and the second temperature sensor 111 detect the temperatures of the first device 104 and the second device 105;

[0081] Calculate temperature change values ​​of the first device 104 and the second device 105;

[0082] See also Figure 2 If the temperature drop of the first device is greater than a threshold value, for example, greater than 1°C, and the temperature of the second device 105 increases, for example, greater than 1°C, the analyzer temperature control is normal. Otherwise, an alarm is issued. At this point, there may be three connection errors: the heater is incorrectly connected to the temperature control board 116, the temperature sensor is incorrectly connected to the temperature control board 116, or both the heater and the temperature sensor are incorrectly connected to the temperature control board 116.

[0083] Furthermore, in order to make the cooling operation of the first device 104 simpler and form a larger temperature difference when cooling the first device 104, before cooling the first device 104, a signal can be sent through the temperature control board 116 to instruct the first heater 108 and the second heater 110 to heat the first device 104 and the second device 105 to a preset temperature, for example, 42°C.

[0084] Furthermore, after giving an alarm prompt, the sample analyzer will further identify the specific situation of the incorrect connection between the heater and the temperature sensor.

[0085] See also Figure 3 If the temperature of the first device 104 rises, for example, by more than 1°C, and the temperature of the second device 105 drops by more than a threshold value, for example, by more than 1°C, then the first heater 108 and the second heater 110 are correctly connected to the temperature control board 116, but the first temperature sensor 109 and the second temperature sensor 111 are incorrectly connected to the temperature control board 116. In this case, because the first heater 108 in the first device 104 is turned off and the first device 104 is being cooled, the temperature of the first device 104 drops rapidly. At this time, the temperature control board interface 120 of the second device 105 is connected to the first temperature sensor 109, resulting in a significant drop in the detected temperature of the second device 105. With the second heater 110 of the second device 105 turned on, the temperature of the second device 105 rises rapidly. At this time, the temperature control board interface 118 of the first device 104 is connected to the second temperature sensor 111, resulting in a significant increase in the detected temperature of the first device 104.

[0086] See also Figure 4When the heating power of the heater is greater than the cooling power, for example, the heating power can be increased by controlling the flow rate or rate of the liquid cooling the first device 104, or by controlling the heating power of the first heater 108 or the second heater 110. If the temperature of the first device 104 increases, for example, by more than 0.5°C, and the temperature of the second device 105 decreases by less than or equal to a threshold value, for example, less than or equal to 0.5°C, then the first temperature sensor 109 and the second temperature sensor 111 are correctly connected to the temperature control board 116, and the first heater 108 and the second heater 110 are incorrectly connected to the temperature control board 116. In this case, since the second heater 110 of the second device 105 is connected to the temperature control panel interface 117, and the heating of the temperature control panel interface 117 is turned off, the detected temperature of the second device 105 remains unchanged (due to the influence of ambient temperature, a small change can be considered unchanged, for example, ±0.2°C), or it decreases slightly due to natural cooling. Since the second temperature sensor 111 of the second device 105 is connected to the temperature control panel interface 120, the detected temperature of the second device 105 remains unchanged, or it decreases slightly due to natural cooling. The first heater 108 of the first device 104 is connected to the temperature control panel interface 119, and the heating of the temperature control panel interface 119 is turned on. Although the first device 104 is affected by the cooling, the heating power is greater than the cooling power, and the temperature in the first device 104 is still in the process of heating up. Therefore, the temperature detected value of the first device 104 will still increase. When the heating power of the heater is adjusted so that it is less than the cooling power, the detected temperature value of the first device 104 will decrease, while the temperature change value of the second device 105 will be the same as when the heating power is greater than the cooling power.

[0087] See also Figure 5When the heater's heating power is adjusted to be greater than its cooling power, if the temperature of the first device 104 decreases by less than or equal to a threshold value, for example, less than 0.5°C, and the temperature of the second device 105 increases, for example, by more than 0.5°C, then the first heater 108, the second heater 110, the first temperature sensor 109, and the second temperature sensor 111 are all incorrectly connected to the temperature control board 116. In this case, since the temperature control board interface 117 is closed and the temperature control board interface 118 is connected to the second temperature sensor 111, the detected temperature of the first device 104 remains unchanged (due to minor changes due to environmental influences, which can be considered unchanged, for example, ±0.2°C), or decreases slightly due to natural cooling, for example, by less than 0.5°C. The temperature control board interface 119 is open, and at this time, it is connected to the first heater 108. Although the first device 104 is affected by the cooling process, the temperature of the first device 104 will still increase because the heating power is greater than the cooling power. The temperature control board interface 120 of the second device 105 is connected to the first temperature sensor 109. Therefore, the detected temperature of the second device 105 will still increase, for example, by more than 0.5°C. When the heating power of the heater is adjusted to be less than the cooling power, the detected temperature change value of the first device 104 will be the same as when the heating power is greater than the cooling power, and the detected temperature change value of the second device 105 will decrease, for example, by more than 0.5°C.

[0088] When there are more than two heating devices, a step-by-step test can be used. First, divide the heating devices into two groups. The first group contains only one heating device (which can be considered the first device 104), and the second group contains the remaining heating devices (which can be considered the second device 105). The test method for the two groups is the same as the test method for the two devices. Then, divide the second group into two more groups and use the same test method, and so on.

[0089] The temperature change value used by the above-mentioned analyzer for fault diagnosis may also be the absolute temperature value, that is, through a period of time, such as 15 seconds, 30 seconds, 45 seconds and 60 seconds; detecting whether the temperature of the first device 104 and the second device 105 has reached a certain target range.

[0090] Example 1

[0091] See also Figure 1 and Figure 2 After the self-diagnosis function of the sample analyzer is turned on, the temperature control board interface 117 is heated and turned on, and the first heater 108 heats the first device 104;

[0092] The first temperature sensor 109 detects the temperature of the first device 104;

[0093] Calculating a temperature change value of the first device 104 within 30 seconds;

[0094] If the temperature detected by the first device 104 does not rise, an alarm is given.

[0095] Example 2

[0096] See also Figure 1 and Figure 5 Based on Example 1, if the detected temperature of the first device 104 increases, for example, by more than 1°C, the heating of the temperature control board interface 117 is turned off, and the first heater 108 stops heating the first device 104; the first liquid circuit component 102 draws the diluent and injects it into the first device 104, and then discharges it from the third liquid circuit component 106, in order to cool the first device 104;

[0097] The first temperature sensor 109 detects the temperature of the first device 104;

[0098] Calculating a temperature change value of the first device 104 within 30 seconds;

[0099] If the detected temperature of the first device 104 does not decrease, that is, the temperature decrease value of the first device 104 is less than or equal to the threshold, for example, the decrease value is less than or equal to 1° C., an alarm prompt is given.

[0100] Example 3

[0101] See also Figure 1 and Figure 2 After the fault self-diagnosis function of the sample analyzer is turned on, the temperature control board interface 117 and the temperature control board interface 119 are heated and turned on, so that the temperature of the first device 104 and the second device 105 reaches a preset temperature, for example, 42°C;

[0102] The heating of the temperature control board interface 117 of the first device 104 is turned off, and the heating of the temperature control board interface 119 of the second device 105 is kept on;

[0103] The first liquid path component 102 draws the diluent and injects it into the first device 104, and then discharges it from the third liquid path component 106, in order to cool the first device 104;

[0104] The first temperature sensor 109 and the second temperature sensor 111 detect the temperature of the first device 104 and the second device 105;

[0105] Calculating temperature changes of the first device 104 and the second device 105 within 1 minute;

[0106] If the temperature drop of the first device 104 is greater than a threshold, for example, the drop is greater than 1°C, and the temperature of the second device 105 increases, for example, the increase is greater than 1°C, then the analyzer temperature control is normal. Otherwise, an alarm prompt is given.

[0107] Furthermore, the analyzer further identifies the specific situation of the incorrect connection between the heater and the temperature sensor after giving the alarm prompt.

[0108] See also Figure 3 If the temperature value of the first device 104 increases, for example, the increase value is greater than 1°C, and the temperature value of the second device 105 decreases by more than a threshold value, for example, the decrease value is greater than 1°C, then the first heater 108 and the second heater 110 are correctly connected to the temperature control board 116, and the first temperature sensor 109 and the second temperature sensor 111 are incorrectly connected to the temperature control board 116.

[0109] See also Figure 4 , adjusting the heating power and cooling power so that the heating power of the heater is greater than the cooling power. If the temperature of the first device 104 increases, for example, by a value greater than 0.5°C, and the temperature of the second device 105 decreases by a value less than or equal to a threshold value, for example, less than or equal to 0.5°C, then the first temperature sensor 109 and the second temperature sensor 111 are correctly connected to the temperature control board 116, and the first heater 108 and the second heater 110 are incorrectly connected to the temperature control board 116. When the heating power of the heater is less than the cooling power, the temperature of the first device 104 will decrease, for example, by a value greater than 0.5°C, and the temperature change of the second device 105 will be the same as when the heating power is greater than the cooling power.

[0110] See also Figure 5 , adjusting the heating power and cooling power so that the heating power of the heater is greater than the cooling power. If the temperature drop of the first device 104 is less than or equal to a threshold value, for example, a drop of less than or equal to 0.5°C, and the temperature of the second device 105 increases, for example, by a drop greater than 0.5°C, then the first heater 108, the second heater 110, the first temperature sensor 109, the second temperature sensor 111, and the temperature control board 116 are all incorrectly connected. When the heating power of the heater is less than the cooling power, the temperature of the second device 105 will decrease, for example, by a drop greater than 0.5°C, and the temperature change of the first device 104 will be the same as when the heating power is greater than the cooling power.

[0111] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A method for self-diagnosing a fault of a sample analyzer, wherein the sample analyzer comprises a first device and a second device for heating a sample, wherein the first device comprises a first heater and a first temperature sensor, and the second device comprises a second heater and a second temperature sensor; A temperature control board is connected to the first heater, the first temperature sensor, the second heater, and the second temperature sensor, and is characterized in that: The method comprises: Sending a signal through the temperature control board to instruct the first heater to heat the first device; The first temperature sensor detects the temperature of the first device; calculating a temperature change value of the first device; If the temperature of the first device does not rise, giving an alarm prompt; If the temperature of the first device rises, a signal is sent through the temperature control board to instruct the first heater to stop heating the first device and cool the first device; The first temperature sensor detects the temperature of the first device; calculating a temperature change value of the first device; If the temperature drop of the first device is less than or equal to a threshold value, an alarm is given.

2. The method according to claim 1, characterized in that The method further comprises: If the temperature of the first device rises, a signal is sent through the temperature control board to instruct the second heater to heat the second device; The second temperature sensor detects the temperature of the second device; calculating a temperature change value of the second device; If the temperature of the second device does not rise, an alarm is given.

3. The method according to claim 1, characterized in that The first device is cooled by passing a liquid through the first device, wherein the liquid includes at least one of a diluent, pure water, and deionized water, and passing the liquid through the first device includes at least one of injecting the liquid into the first device and flowing around the first device.

4. A method for self-diagnosing a fault of a sample analyzer, the sample analyzer comprising a first device and a second device for heating a sample, the first device comprising a first heater and a first temperature sensor, the second device comprising a second heater and a second temperature sensor; A temperature control board is connected to the first heater, the first temperature sensor, the second heater, and the second temperature sensor, and is characterized in that: The method comprises: performing a cooling process on the first device; sending a signal through the temperature control board to instruct the second heater to heat the second device; The first temperature sensor and the second temperature sensor detect the temperatures of the first device and the second device; and calculate the temperature change values ​​of the first device and the second device. If the temperature drop of the first device is greater than the threshold value and the temperature of the second device increases, the temperature control of the analyzer is normal. If not, an alarm prompt is given.

5. The method according to claim 4, characterized in that The first device is cooled by passing a liquid through the first device, wherein the liquid includes at least one of a diluent, pure water, and deionized water, and the passing through the first device includes at least one of injecting into the first device and flowing around the first device.

6. The method according to claim 4, characterized in that The method further includes: before cooling the first device, sending a signal through the temperature control board to instruct the first heater and the second heater to heat the first device and the second device to a preset temperature.

7. The method according to any one of claims 4 to 6, characterized in that: The method further includes further identifying a specific situation in which the heater and the temperature sensor are incorrectly connected after giving an alarm prompt: If the temperature of the first device increases and the temperature drop of the second device is greater than a threshold, the first heater and the second heater are correctly connected to the temperature control board, and the first temperature sensor and the second temperature sensor are incorrectly connected to the temperature control board.

8. The method according to any one of claims 4 to 6, characterized in that: The method further includes further identifying a specific situation in which the heater and the temperature sensor are incorrectly connected after giving an alarm prompt: When the heating power of the heater is greater than the cooling power, if the temperature of the first device increases, the temperature drop value of the second device is less than or equal to a threshold value; When the heating power of the heater is less than the cooling power, if the temperature drop value of the first device is greater than a threshold value, and the temperature drop value of the second device is less than or equal to a threshold value, The first temperature sensor and the second temperature sensor are correctly connected to the temperature control board, and the first heater and the second heater are incorrectly connected to the temperature control board.

9. The method according to any one of claims 4 to 6, characterized in that: The method further includes further identifying a specific situation in which the heater and the temperature sensor are incorrectly connected after giving an alarm prompt: When the heating power of the heater is greater than the cooling power, if the temperature drop value of the first device is less than or equal to a threshold value, the temperature of the second device increases; When the heating power of the heater is less than the cooling power, if the temperature drop value of the first device is less than or equal to the threshold, and the temperature drop value of the second device is greater than the threshold, Then the first heater, the second heater, the first temperature sensor, the second temperature sensor and the temperature control board are all incorrectly connected.

10. A sample analyzer comprising: A first device and a second device for heating a sample are provided, wherein the first device has a first heater and a first temperature sensor, and the second device has a second heater and a second temperature sensor; a temperature control board connected to the first heater, the first temperature sensor, the second heater, and the second temperature sensor; A fault diagnosis module, wherein the fault diagnosis module sends a signal through the temperature control board to instruct the first heater to heat the first device; obtains the temperature information detected by the first temperature sensor and calculates the temperature change value of the first device; if the temperature of the first device does not rise, an alarm prompt is given; if the temperature of the first device rises, a signal is sent through the temperature control board to instruct the first heater to stop heating the first device and cool the first device, obtains the temperature information detected by the first temperature sensor, and calculates the temperature change value of the first device; if the temperature drop value of the first device is less than or equal to a threshold, an alarm prompt is given.

11. A sample analyzer comprising: A first device and a second device for heating a sample are provided, wherein the first device has a first heater and a first temperature sensor, and the second device has a second heater and a second temperature sensor; a temperature control board is connected to the first heater, the first temperature sensor, the second heater, and the second temperature sensor through the temperature control board; A fault diagnosis module is provided, wherein the diagnostic module cools down the first device; sends a signal through the temperature control board to instruct the second heater to heat the second device; obtains temperature information detected by the first temperature sensor and the second temperature sensor and calculates the temperature change value of the first device and the second device; if the temperature drop value of the first device is greater than a threshold value and the temperature of the second device increases, the analyzer temperature control is normal; otherwise, an alarm prompt is given.

12. The analyzer according to claim 11, characterized in that The analyzer also includes a first liquid circuit component. The diagnostic module controls the first liquid circuit component to allow liquid to pass through the first device. The liquid includes at least one of a diluent, pure water, and deionized water. Passing through the first device includes at least one of being injected into the first device and flowing around the first device.

13. The analyzer according to claim 12, characterized in that The first fluid path components are valves, pumps, and syringes.

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