Temperature calibration method and device for incubator, and incubator

Abstract

The application relates to the technical field of incubator control, and discloses a temperature calibration method and device for an incubator and the incubator. The temperature calibration method comprises the following steps: acquiring a real-time temperature detection value in the operation process of the incubator; acquiring a power parameter of a heater of the incubator under the condition that the change of the real-time temperature detection value indicates that the incubator is in a temperature stable state; determining a corresponding calibration correction value according to the power parameter of the heater; determining an actual calibration value according to the calibration correction value and an initial calibration value of the incubator, and calibrating the temperature detection value of the incubator by using the actual calibration value. The calibration accuracy of the temperature detection value of the incubator under different operation conditions can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of incubator control technology, such as a temperature calibration method, apparatus, and incubator for an incubator. Background Technology

[0002] Incubators are widely used in cell culture, microbial culture, and biological sample preservation. The accuracy and stability of their internal temperature directly affect the reliability of the culture results. Typically, incubators use temperature sensors to collect temperature readings within the chamber and control the heaters based on these readings to maintain the internal temperature near a set value.

[0003] In existing technologies, to ensure the accuracy of incubator temperature control, temperature calibration is typically performed during the production or commissioning phase. This calibration process generally involves setting the incubator's set temperature to the target temperature under preset ambient temperature conditions. After the internal temperature of the incubator reaches a stable state, the temperature readings collected by the temperature sensor are compared with the actual temperature measured by a standard temperature measuring device to obtain calibration parameters used to correct the temperature readings. These calibration parameters are then consistently used during subsequent operation of the incubator to correct the temperature readings, thereby improving temperature control accuracy.

[0004] However, the above calibration methods are typically performed under a single ambient temperature condition, and the resulting calibration parameters only reflect the temperature detection error of the incubator under that reference environmental condition. When the incubator operates under different ambient temperature conditions, the deviation between the temperature sensor readings and the actual internal temperature of the incubator will change due to variations in heat dissipation, heater operation, and internal thermal balance. In such cases, continuing to use the fixed calibration parameters obtained under reference environmental conditions often fails to guarantee the accuracy of temperature detection under different operating conditions.

[0005] To address the aforementioned issues, some existing technical solutions attempt to introduce an ambient temperature sensor to monitor the temperature of the incubator and adjust the temperature readings or control parameters accordingly.

[0006] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art: The measurement results of ambient temperature sensors are easily affected by factors such as the distribution of cold and heat sources, air flow, and the placement of equipment. If the ambient temperature sensor malfunctions or the measurement is abnormal, it may lead to inaccurate temperature correction, which in turn affects the safety of temperature control in the incubator.

[0007] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0008] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0009] This disclosure provides a method, apparatus, and incubator for temperature calibration of an incubator, thereby improving the accuracy of incubator temperature detection.

[0010] In some embodiments, the temperature calibration method for the incubator includes: Obtain real-time temperature readings during incubator operation; When the change in the real-time temperature detection value indicates that the incubator is in a stable temperature state, the power parameters of the incubator heater are obtained; Based on the power parameters of the heater, determine the corresponding calibration correction value; The actual calibration value is determined based on the calibration correction value and the initial calibration value of the incubator, and the temperature detection value of the incubator is calibrated using the actual calibration value.

[0011] Optionally, the power parameters of the heater include at least one of the heater's control output parameters, equivalent output power, or duty cycle.

[0012] Optionally, determining the corresponding calibration correction value based on the power parameters of the heater includes: Based on the power parameters of the heater, determine the power output ratio of the heater; Determine the corresponding calibration correction value based on the power output ratio of the heater; The calibration correction value exhibits a monotonic variation trend with the power output ratio.

[0013] Optionally, the calibration correction value increases as the power output ratio increases, and decreases as the power output ratio decreases.

[0014] Optionally, determining the corresponding calibration correction value based on the power parameters of the heater includes: Based on the power parameters of the heater, determine the power output ratio of the heater; The corresponding calibration correction value is determined based on the power range to which the power output ratio belongs.

[0015] Optionally, determining the corresponding calibration correction value based on the power range to which the power output ratio belongs includes: Based on the power range, determine the calibration correction value corresponding to the power range from the pre-established correspondence between power ranges and calibration correction values; The correspondence is established in the form of a correspondence table or a correspondence function.

[0016] Optionally, the change in the real-time temperature detection value indicates that the incubator is in a stable temperature state, including: Obtain the change range of the real-time temperature detection value within a preset time period; If the change is less than a preset threshold, the incubator is determined to be in a stable temperature state.

[0017] Optionally, determining the actual calibration value based on the calibration correction value and the initial calibration value of the incubator includes: Calculate T2 = T1 + t; The actual calibration value T2 is obtained; Where T2 is the actual calibration value, T1 is the initial correction value, and t is the calibration correction value.

[0018] In some embodiments, the temperature calibration device for an incubator includes a processor and a memory storing program instructions, the processor being configured to execute the temperature calibration method for an incubator as described above when the program instructions are executed.

[0019] In some embodiments, the incubator includes: Incubator body; The temperature calibration device for the incubator, as described above, is installed on the incubator body.

[0020] The temperature calibration method, apparatus, and incubator for incubators provided in this disclosure can achieve the following technical effects: This invention obtains power parameters characterizing the current heating intensity of the heater when the incubator temperature is stable, and determines corresponding calibration correction values ​​based on these power parameters. This revises the initial calibration values, ensuring that the obtained actual calibration values ​​reflect the temperature detection deviation of the incubator under current operating conditions. Therefore, compared to existing technologies that obtain and fix calibration parameters only under reference environmental conditions, this invention effectively improves the calibration accuracy of temperature detection values ​​under different operating conditions. By establishing a correspondence between power parameters and calibration correction values, this invention can dynamically determine calibration correction values ​​based on actual operating condition changes during incubator operation, giving the calibration process an adaptive characteristic. This allows the incubator to maintain good temperature control performance under various operating environments, such as different ambient temperatures and different heat dissipation conditions. Thus, the determined calibration correction values ​​better reflect the true operating characteristics of the incubator under steady-state conditions, thereby improving the stability and consistency of calibration results.

[0021] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0022] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1 This is a schematic flowchart of a temperature calibration method for an incubator provided in an embodiment of this disclosure; Figure 2 This is a flowchart of another temperature calibration method for an incubator provided in this disclosure embodiment; Figure 3 This is a flowchart of another temperature calibration method for an incubator provided in this disclosure embodiment; Figure 4 This is a flowchart of another temperature calibration method for an incubator provided in this disclosure embodiment; Figure 5 This is a schematic diagram of a temperature calibration device for an incubator provided in an embodiment of the present disclosure; Figure 6 This is a comparison chart of the actual effects of the temperature calibration method for incubators provided in this disclosure under different operating conditions. Detailed Implementation

[0023] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0024] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0025] Unless otherwise stated, the term "multiple" means two or more.

[0026] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0027] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0028] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0029] In the field of existing incubator temperature control and calibration technology, those skilled in the art, when addressing temperature detection errors under different operating environments, typically tend to directly introduce an ambient temperature sensor to detect the ambient temperature of the incubator and compensate for the detected temperature values ​​or control parameters based on the ambient temperature. It is generally believed that ambient temperature is a direct factor affecting the thermal equilibrium state of the incubator and temperature detection errors; only through real-time measurement of the ambient temperature can the current operating conditions of the incubator be accurately reflected. Therefore, for a long time, related research and engineering implementation have largely revolved around ambient temperature sensors.

[0030] However, the inventors discovered certain limitations in the aforementioned technical understanding during their research. While ambient temperature does indeed affect the thermal equilibrium of the incubator, once the incubator temperature reaches a steady state, the heater's operating intensity required to maintain the target temperature within the incubator actually reflects the combined effects of multiple factors, including ambient temperature, incubator heat dissipation conditions, and internal heat load. In other words, under steady-state conditions, the heater's power output can itself serve as an effective characterization of the incubator's current operating status.

[0031] Based on the above understanding, the inventors have overcome the technical bias in existing technologies that "compensation must rely on ambient temperature sensors," and proposed a technical solution that uses heater power-related parameters to determine calibration correction values. By acquiring the heater's power parameters under stable incubator temperature conditions and further determining the power output ratio or power range, a calibration correction value corresponding to the current operating conditions is obtained, achieving dynamic calibration of the temperature detection value. Experimental verification by the inventors revealed that this method does not require direct measurement of ambient temperature, yet it can still accurately reflect the changing patterns of temperature detection deviations under different operating environments, effectively improving the accuracy and stability of temperature detection and control.

[0032] Therefore, this application simplifies the system structure and reduces the reliance on additional sensors by using heater power to determine the calibration compensation value. It also overcomes the technical prejudice that "temperature calibration compensation must be based on ambient temperature detection" that has long been held by those skilled in the art. Based on this, the incubator temperature calibration method, device and incubator of this application are proposed.

[0033] It is important to note that during the actual operation of the incubator, the output power of the heater is not solely determined by the ambient temperature, but is also influenced by the overall thermal equilibrium state of the incubator. Specifically, the output power of the heater in maintaining a stable target temperature within the incubator is related not only to the external ambient temperature, but also to various factors such as the internal load of the incubator, the structure and sealing of the chamber, the internal airflow, and changes in the thermal characteristics of the equipment after long-term use. Therefore, the output power of the heater reflects the overall heat dissipation characteristics and thermal equilibrium state of the incubator system under current operating conditions, rather than a single parameter such as ambient temperature.

[0034] For the reasons mentioned above, in practical engineering applications, even under the same ambient temperature conditions, the output power required by the heater to maintain the target temperature may still vary significantly between different incubators or the same incubator under different operating conditions. Therefore, the heater output power cannot be simply regarded as an equivalent substitute for the ambient temperature.

[0035] Figure 1 This is a schematic flowchart of a temperature calibration method for an incubator provided in an embodiment of this disclosure.

[0036] like Figure 1 As shown, the temperature calibration method includes: Step S101: Obtain the real-time temperature detection value during the operation of the incubator.

[0037] The real-time temperature reading refers to the temperature value collected in real time by a temperature sensor installed inside the incubator during the incubator's operation. This temperature reading is the output value of the temperature sensor.

[0038] Here, temperature sensors placed inside the incubator collect the internal temperature data. The controller periodically reads the output signals from the temperature sensors and uses these signals as real-time temperature values ​​for subsequent processing. This provides the basic data for determining whether the incubator is in a temperature stable state.

[0039] Step S102: When the change in the real-time temperature detection value indicates that the incubator is in a stable temperature state, obtain the power parameters of the incubator heater.

[0040] The change in real-time temperature detection value refers to the magnitude, trend, or rate of change of the real-time temperature detection value within a preset time period.

[0041] A stable temperature state refers to a state in which the temperature change within the incubator is less than a preset threshold over a certain period of time, indicating that the temperature has reached thermal equilibrium.

[0042] Power parameters refer to parameters that characterize the current heating intensity of the incubator heater, and are not limited to the actual electrical power value.

[0043] Here, the controller analyzes the real-time temperature detection value within a preset time window. When the detected temperature change is less than a preset threshold, it determines that the incubator is in a stable temperature state. After determining that the temperature is stable, it acquires the power parameters of the heater, such as: the control output parameters of the heater; the equivalent output power of the heater; the duty cycle of the heater, or a combination thereof.

[0044] This ensures that power parameters are acquired only after the incubator has reached a steady state, avoiding interference from transient conditions in subsequent calibration. Furthermore, the acquired power parameters accurately reflect the heating intensity required to maintain the temperature under current operating conditions, providing a reliable basis for subsequent calibration corrections based on these conditions.

[0045] Step S103: Determine the corresponding calibration correction value based on the power parameters of the heater.

[0046] The calibration correction value refers to the correction amount used to compensate for the initial calibration value, and is used to reflect the deviation between the temperature detection value and the actual temperature of the incubator under the current operating conditions.

[0047] The correspondence refers to the pre-established mapping relationship between power parameters or the power output ratio and power range calculated from them, and calibration correction values.

[0048] Here, based on the acquired power parameters and a pre-established correspondence, a calibration correction value corresponding to the current power parameters is determined. The power parameters indirectly reflect the current operating conditions of the incubator, allowing the calibration correction value to change with the operating conditions rather than remaining fixed; this enables adaptive compensation for temperature detection deviations under different environmental and heat dissipation conditions.

[0049] Step S104: Determine the actual calibration value based on the calibration correction value and the initial calibration value of the incubator, and use the actual calibration value to calibrate the temperature detection value of the incubator.

[0050] The initial calibration value refers to the reference calibration parameter obtained under the reference operating conditions and used to correct the temperature detection value.

[0051] The actual calibration value refers to the calibration parameter that is determined based on the initial calibration value and combined with the calibration correction value, and is applicable to the current operating conditions.

[0052] Here, the calibration correction value and the initial calibration value are combined and calculated, for example, through superposition, to obtain the actual calibration value. The actual calibration value is then used to correct the temperature detection value collected by the temperature sensor, resulting in the calibrated temperature detection value. This transforms the static initial calibration value into a dynamic calibration value that reflects the current operating conditions, improving the accuracy of the temperature detection value under different operating conditions and ensuring the reliability and consistency of the incubator temperature control.

[0053] Thus, the temperature calibration method for incubators provided in this disclosure obtains power parameters characterizing the current heating intensity of the heater when the incubator temperature is stable, and determines corresponding calibration correction values ​​based on these power parameters, thereby revising the initial calibration values. This ensures that the obtained actual calibration values ​​reflect the temperature detection deviation of the incubator under the current operating conditions. Therefore, compared to existing technologies that obtain and fix calibration parameters only under reference environmental conditions, this invention effectively improves the calibration accuracy of temperature detection values ​​under different operating conditions. By establishing a correspondence between power parameters and calibration correction values, this invention can dynamically determine calibration correction values ​​based on actual operating condition changes during incubator operation, giving the calibration process adaptive characteristics. This allows the incubator to maintain good temperature control performance under various operating environments, such as different ambient temperatures and different heat dissipation conditions. Consequently, the determined calibration correction values ​​better reflect the true operating characteristics of the incubator under steady-state conditions, thereby improving the stability and consistency of the calibration results.

[0054] To verify the actual effectiveness of the temperature calibration scheme based on heater power parameters proposed in this application under different operating conditions, a comparative experiment was conducted on the operation of the incubator under varying ambient temperature conditions. The experimental results are presented in the form of curves, as shown below. Figure 6 As shown.

[0055] like Figure 6 As shown, the horizontal axis represents the experimental time, the left vertical axis represents the ambient dry-bulb temperature of the incubator, and the right vertical axis represents the temperature detection result at the center of the incubator. The figure shows three curves: curve a represents the change in ambient dry-bulb temperature during the experiment; curve b represents the change in the center temperature of the incubator when single-point calibration is performed only at an ambient temperature of 22°C and this calibration value is consistently used during subsequent operation; and curve c represents the change in the center temperature of the incubator when calibration correction based on heater power parameters is performed as proposed in this application.

[0056] from Figure 6 It can be seen that the ambient dry-bulb temperature changed multiple times during the experiment, simulating the actual operating conditions of the incubator under different ambient temperatures. When only a single-point calibration scheme at an ambient temperature of 22℃ was used, the center temperature of the incubator showed a significant shift with the change in the ambient dry-bulb temperature, and the fluctuation range was large at different time periods. This indicates that the single-point calibration scheme is quite sensitive to changes in ambient temperature and is difficult to maintain a stable temperature control effect under changing environmental conditions.

[0057] In contrast, when the calibration and correction scheme based on heater power parameters proposed in this application is adopted, although the ambient dry-bulb temperature changes during the experiment, the overall temperature of the incubator can still be maintained near the set temperature. Its change trend is smoother, and the fluctuation amplitude is significantly reduced, exhibiting better consistency and stability across different ambient temperature stages. This indicates that by obtaining the heater power parameters when the incubator temperature is stable and calibrating and correcting the temperature detection values ​​based on these power parameters, the influence of changes in ambient temperature and heat load on the temperature detection results can be effectively offset.

[0058] Therefore, without directly relying on the ambient temperature sensor, the temperature calibration correction scheme based on heater power parameters proposed in this application can more accurately reflect the actual operating conditions of the incubator. Compared with the single-point calibration method, it has better stability, accuracy and robustness under different ambient temperature conditions.

[0059] The following describes, with reference to specific embodiments, how to determine the corresponding calibration correction value based on the power parameters of the heater.

[0060] Figure 2 This is a flowchart of another temperature calibration method for an incubator provided in this disclosure embodiment.

[0061] like Figure 2 As shown, the temperature calibration method includes: Step S201: Obtain the real-time temperature detection value during the operation of the incubator.

[0062] Step S202: When the change in the real-time temperature detection value indicates that the incubator is in a stable temperature state, obtain the power parameters of the incubator heater.

[0063] Step S203: Determine the power output ratio of the heater based on the power parameters of the heater.

[0064] The power output ratio refers to the proportional value obtained after normalizing the power parameters, used to represent the relationship between the current heating intensity and a preset reference value. The power output ratio can be in percentage form, or in interval or dimensionless proportion form.

[0065] Here, when the incubator is in a stable temperature state, the controller reads the power parameters of the heater; compares or normalizes the power parameters with a preset reference value; and calculates the power output ratio representing the current working intensity of the heater. The preset reference value can be the heater's maximum output capacity, rated power, or a pre-set baseline power parameter.

[0066] Converting different forms of power parameters into a more comparable power output ratio can eliminate the influence of different heater specifications and control methods on subsequent calibration logic; it provides a unified and stable input for establishing the correspondence between the power output ratio and the calibration correction value, and improves the system's versatility and scalability under different equipment configurations.

[0067] Step S204: Determine the corresponding calibration correction value based on the power output ratio of the heater; wherein the calibration correction value shows a monotonic changing trend with the power output ratio.

[0068] A monotonic trend refers to a situation where, during a change in the power output ratio, the calibration correction value always changes in the same direction without any reversal. This trend is not limited to a linear relationship, nor is continuous change required.

[0069] Here, based on the calculated power output ratio, the power range to which it belongs is determined; in the pre-established correspondence between power output ratio and calibration correction value, the calibration correction value corresponding to the power output ratio is found; the correspondence can be established using a correspondence table, a correspondence function, or a piecewise mapping rule. When establishing the correspondence, the calibration correction value is ensured to remain monotonically changing with the power output ratio.

[0070] By using the power output ratio as an intermediate quantity, the heater's operating status is effectively correlated with the temperature detection deviation, enabling the calibration correction value to adaptively adjust with changes in the incubator's operating conditions. This ensures the directionality and stability of the calibration correction value changes and avoids abnormal jumps during the calibration process. It also achieves effective compensation for temperature detection deviations under different environmental conditions without relying on an ambient temperature sensor.

[0071] Step S205: Determine the actual calibration value based on the calibration correction value and the initial calibration value of the incubator, and use the actual calibration value to calibrate the temperature detection value of the incubator.

[0072] In this embodiment, during the operation of the incubator, once the temperature inside the incubator reaches a stable state, the controller acquires the power parameters of the heater and determines the power output ratio of the heater based on these parameters. The power output ratio is used to characterize the heating intensity of the heater under the current operating state relative to a preset reference state.

[0073] The controller determines the corresponding calibration correction value based on the power output ratio. This calibration correction value compensates for deviations in the incubator's temperature readings relative to the actual temperature under current operating conditions. To ensure the stability and reliability of the calibration process, the calibration correction value exhibits a monotonically changing trend with the power output ratio; that is, as the power output ratio changes, the calibration correction value always changes in the same direction.

[0074] In a preferred implementation, when the power output ratio increases, it indicates that the heating intensity required by the heater to maintain the temperature inside the chamber increases, and correspondingly, the calibration correction value increases; when the power output ratio decreases, the calibration correction value decreases. This method ensures that the calibration correction value maintains a consistent relationship with the current operating conditions of the incubator.

[0075] By determining the calibration correction value based on the power output ratio, this embodiment can reflect the operating conditions of the incubator by utilizing the working status of the heater without relying on an ambient temperature sensor, thereby achieving dynamic calibration of the temperature detection value and improving the accuracy of temperature detection and control stability of the incubator under different operating environments.

[0076] Figure 3 This is a flowchart of another temperature calibration method for an incubator provided in this disclosure embodiment.

[0077] like Figure 3 As shown, the temperature calibration method includes: Step S301: Obtain the real-time temperature detection value during the operation of the incubator.

[0078] Step S302: When the change in the real-time temperature detection value indicates that the incubator is in a stable temperature state, obtain the power parameters of the incubator heater.

[0079] Step S303: Determine the power output ratio of the heater based on the power parameters of the heater.

[0080] Step S304: Determine the corresponding calibration correction value based on the power range to which the power output ratio belongs.

[0081] A power range refers to dividing the power output ratio into several preset range segments, with each power range corresponding to a typical operating condition. By using power ranges, the continuously changing power output ratio is discretized, enhancing the system's operational stability and anti-interference capability.

[0082] Here, the controller determines the power range to which it belongs based on the calculated power output ratio; it obtains the calibration correction value corresponding to the power range from the pre-established correspondence between power ranges and calibration correction values; the correspondence can be stored in the controller in the form of a correspondence table or segmentation rules.

[0083] Step S305: Determine the actual calibration value based on the calibration correction value and the initial calibration value of the incubator, and use the actual calibration value to calibrate the temperature detection value of the incubator.

[0084] Optionally, in step S304, the corresponding calibration correction value is determined according to the power range to which the power output ratio belongs, including: Based on the power range, determine the calibration correction value corresponding to the power range from the pre-established correspondence between the power range and the calibration correction value; The correspondence is established in the form of a correspondence table or a correspondence function.

[0085] Optionally, after determining the power range to which the power output ratio belongs, the controller substitutes the power output ratio parameter corresponding to the power range into a pre-established correspondence function to calculate the corresponding calibration correction value. The correspondence function describes the relationship between the power range and the calibration correction value, and can be set as a monotonic function to ensure that the calibration correction value maintains a stable trend as the power range changes. By using the correspondence function, continuous or semi-continuous adjustment of the calibration correction value can be achieved while ensuring a reasonable trend, thus improving the precision of the calibration correction.

[0086] In another embodiment, after determining the power range to which the power output ratio belongs, the controller looks up the calibration correction value corresponding to the power range from a pre-established correspondence table of power ranges and calibration correction values.

[0087] For example, Table 1 shows the correspondence between a power range of heater power output ratio and calibration correction values.

[0088] Table 1

[0089] Table 1 clearly illustrates the numerical trend of the calibration correction value as the heater power output ratio changes. This relationship is achieved through a one-to-one correspondence between power ranges and calibration correction values, rather than being limited to a linear function. In the correspondence table shown in Table 1, different power ranges correspond one-to-one with different calibration correction values, and each calibration correction value changes sequentially from low to high power within the range. By using a correspondence table, the calibration correction value can be determined in the controller with a simple data structure, reducing computational complexity and making it suitable for resource-constrained embedded system applications.

[0090] By dividing the power output ratio into power ranges and determining the calibration correction value based on the pre-established correspondence between the power range and the calibration correction value, this solution can indirectly reflect the operating conditions of the incubator by utilizing the heater's working status without relying on an ambient temperature sensor, thereby achieving stable and reliable calibration of the temperature detection value.

[0091] Furthermore, this invention does not directly calibrate and correct based on the heater output power during incubator heating or temperature fluctuations. Instead, it limits the monitoring and analysis of heater output power only when the incubator reaches the target temperature and is in a stable operating state. In the stage before the temperature stabilizes, the heater output power typically exhibits large instantaneous fluctuations. This power state is primarily used for temperature regulation and is difficult to accurately reflect the true thermal balance characteristics of the incubator system.

[0092] Only after the temperature fluctuations inside the incubator are within a preset allowable range and maintained for a certain period of time does the heater's output power enter a relatively stable maintenance phase. At this point, the power state characterizes the deviation in the incubator's heat dissipation characteristics under the current operating conditions. Therefore, this invention ensures the reliability and validity of the acquired heater output power as a basis for calibration judgment by limiting the stable operating state as the trigger condition for calibration correction. The following specific embodiments illustrate how to determine if the incubator is in a stable state.

[0093] Figure 4 This is a flowchart of another temperature calibration method for an incubator provided in this disclosure embodiment.

[0094] like Figure 4 As shown, the temperature calibration method includes: Step S401: Obtain the real-time temperature detection value during the operation of the incubator.

[0095] Step S402: Obtain the change range of the real-time temperature detection value within a preset time period.

[0096] The preset time period refers to the time window used to analyze temperature changes. Its duration is preset by the system to cover the process of the incubator transitioning from transient to steady-state changes.

[0097] The magnitude of change refers to the amount of change in the real-time temperature detection value within a preset time period. It is used to reflect the degree of temperature fluctuation and can be expressed as the difference between the maximum and minimum values, the average amount of change, or the range of change.

[0098] Here, during the incubator's operation, the controller continuously acquires real-time temperature readings from the temperature sensor. Within a preset time period, it statistically analyzes the collected real-time temperature values ​​to calculate the amplitude of change in the real-time temperature readings during that period. This process can be implemented using methods such as sliding time windows or fixed-time sampling, without requiring calibration of the temperature readings. By introducing the amplitude of change, the judgment of the temperature state is transformed from an absolute temperature value to a change characteristic, avoiding reliance on the accuracy of the measured values.

[0099] Step S403: If the change is less than a preset threshold, determine that the incubator is in a stable temperature state.

[0100] The preset threshold is a reference value used to determine whether temperature changes are negligible, and to distinguish whether the incubator is in a state of temperature fluctuation or a stable state.

[0101] Temperature stability refers to a state in which the temperature inside the incubator fluctuates within a small range over a period of time, and the system is in thermal equilibrium or near-thermal equilibrium. By combining preset thresholds with the range of temperature changes, an objective determination of temperature stability can be achieved.

[0102] The controller compares the temperature change amplitude obtained in step S402 with a preset threshold. When the change amplitude is less than the preset threshold, it determines that the temperature change of the incubator has become gradual. Under this condition, it is determined that the incubator is in a stable temperature state.

[0103] Step S404: Obtain the power parameters of the incubator heater.

[0104] Step S405: Determine the corresponding calibration correction value based on the power parameters of the heater.

[0105] Step S406: Determine the actual calibration value based on the calibration correction value and the initial calibration value of the incubator, and use the actual calibration value to calibrate the temperature detection value of the incubator.

[0106] In this embodiment, during the operation of the incubator, the controller first collects the internal temperature information through a temperature sensor installed inside the incubator to obtain the real-time temperature detection value during the incubator's operation. The real-time temperature detection value is the output of the temperature sensor and is used to reflect the temperature changes inside the incubator.

[0107] To determine whether the incubator is in a stable operating condition suitable for temperature calibration, the controller continuously samples the real-time temperature readings within a preset time period and calculates the amplitude of change in the real-time temperature readings during that time period. The amplitude of change reflects the degree of temperature fluctuation within the incubator during that time period.

[0108] When the calculated change is less than a preset threshold, the controller determines that the temperature change inside the incubator has leveled off and the incubator is in a stable temperature state. This method avoids performing subsequent calibration before the incubator temperature has stabilized, thereby reducing the impact of transient temperature changes on the calibration results. For example, in this embodiment, the preset threshold is set to 0.1℃, and the preset time period is set to 1 hour.

[0109] After confirming that the incubator is in a stable temperature state, the controller acquires the power parameters of the incubator heater. The power parameters characterize the heating intensity provided by the heater to maintain the temperature inside the incubator under the current operating conditions. The power parameters can be the heater's control output parameters, equivalent output power, or duty cycle, etc.

[0110] The controller determines the corresponding calibration correction value based on the acquired power parameters. This calibration correction value is used to compensate for deviations in the temperature detection values ​​of the incubator under the current operating conditions. By correlating the heater's operating status with the temperature detection deviation, the operating characteristics of the incubator can be reflected without directly detecting the ambient temperature.

[0111] Subsequently, the controller combines the calibration correction value with the incubator's initial calibration value to obtain the actual calibration value applicable to the current operating conditions. The actual calibration value is then used to calibrate the temperature detection value collected by the temperature sensor, thereby obtaining the calibrated temperature detection value.

[0112] Through the above implementation methods, the incubator can dynamically calibrate the temperature detection value under different operating environments and different heat dissipation conditions, thereby improving the accuracy and stability of temperature detection and control, while avoiding the system complexity and reliability risks brought about by introducing an ambient temperature sensor.

[0113] Furthermore, in this embodiment, the combination of the calibration correction value and the initial calibration value of the incubator is achieved through the following scheme: The controller pre-stores an initial calibration value T1 obtained under a reference operating condition. The initial calibration value T1 is used to perform reference calibration on the temperature detection values ​​collected by the temperature sensor. After the incubator reaches a stable temperature state, the controller determines a calibration correction value t based on the power parameters of the heater. The calibration correction value t reflects the change in the temperature detection deviation of the incubator under the current operating condition relative to the reference operating condition.

[0114] The controller combines the calibration correction value t with the initial correction value T1 to calculate the actual calibration value T2 according to the following formula: T2 = T1 + t; Where T2 is the actual calibration value applicable to the current operating conditions. Subsequently, the controller uses the actual calibration value T2 to correct the temperature detection value collected by the temperature sensor, thereby obtaining the calibrated temperature detection value.

[0115] Through the above method, this embodiment can introduce calibration correction values ​​related to the current operating conditions while retaining the initial calibration value as a benchmark, so as to realize dynamic calibration of the temperature detection value and make the temperature detection result more consistent with the actual temperature of the incubator in the actual operating environment.

[0116] Furthermore, in other embodiments of this solution, determining the actual calibration value based on the calibration correction value and the initial calibration value of the incubator can also be achieved in the following way: The actual calibration value T2 is calculated according to the following formula: T2 = T1 + k × t; Where k is a preset weighting coefficient, satisfying 0 <k≤1; Optionally, k=0.7.

[0117] Optionally, the value of k can be determined based on the power output ratio or the power range in which it is located; the lower the power output ratio (or the power range in which it is located), the lower the value of k, in order to avoid overcompensation.

[0118] Furthermore, in other embodiments of this solution, determining the actual calibration value based on the calibration correction value and the initial calibration value of the incubator can also be achieved in the following way: The actual calibration value T2 is calculated according to the following formula: ; in a Smoothing coefficient (0 < a ≤1), T2(n-1) is the actual calibration value of the previous cycle.

[0119] In this way, the actual calibration value is treated as a state variable that can be updated step by step, avoiding sudden changes in the calibration value caused by a single calculation, which is suitable for scenarios with higher stability requirements.

[0120] Thus, the actual calibration values ​​obtained using the above embodiments are used to calibrate the temperature detection values ​​of the incubator. In the temperature control system of the incubator, the control parameters are mainly used to adjust the temperature response speed and stability, so that the temperature inside the chamber can quickly and smoothly reach the set value. However, when the overall heat dissipation characteristics of the incubator change, adjusting the control parameters alone, while maintaining the temperature fluctuation range, cannot correct the reference deviation of the temperature measurement or display results relative to the actual temperature inside the chamber.

[0121] This invention recognizes that the temperature calibration value directly determines the reference relationship upon which temperature measurement and control are based. When the system's heat dissipation characteristics change, if the calibration value is not corrected accordingly, a systematic deviation between the displayed temperature and the actual temperature may occur. Therefore, this invention corrects the temperature calibration value based on the heater's output power under stable operating conditions, thereby eliminating temperature reference offsets caused by changes in operating conditions at the calibration level and achieving long-term consistency in temperature accuracy under different operating conditions.

[0122] In summary, this invention obtains power parameters characterizing the current heating intensity of the heater when the incubator temperature is stable, and determines corresponding calibration correction values ​​based on these power parameters, thereby revising the initial calibration values. This ensures that the obtained actual calibration values ​​reflect the temperature detection deviation of the incubator under the current operating conditions. Therefore, compared to existing technologies that obtain and fix calibration parameters only under reference environmental conditions, this invention effectively improves the calibration accuracy of temperature detection values ​​under different operating conditions.

[0123] Meanwhile, this invention does not rely on direct measurement of the ambient temperature of the incubator. Instead, it indirectly reflects the current operating conditions of the incubator through the power parameters of the heater, thereby achieving calibration and correction of the temperature detection value. This method avoids the problems of increased hardware costs, structural complexity, and susceptibility to external interference associated with introducing an ambient temperature sensor, thus improving the overall reliability and safety of the system.

[0124] Furthermore, by establishing a correspondence between power parameters and calibration correction values, this invention can dynamically determine calibration correction values ​​based on actual operating conditions during incubator operation, enabling the calibration process to have adaptive characteristics. This allows the incubator to maintain good temperature control performance under various operating environments such as different ambient temperatures and different heat dissipation conditions.

[0125] Finally, the power parameters used in this invention can be in various forms, such as the heater's control output parameters, equivalent output power, or duty cycle, and are not limited to precise measurement of electrical power. Therefore, there is no need to add complex detection circuits or sensors, making it easy to implement in existing incubator control systems via software, thus exhibiting good engineering applicability. Obtaining and calibrating the power parameters under stable temperature conditions effectively avoids the influence of transient fluctuations on the calibration results, ensuring that the determined calibration correction values ​​better reflect the true operating characteristics of the incubator under steady-state conditions, thereby improving the stability and consistency of the calibration results.

[0126] Combination Figure 5 As shown, this disclosure provides a temperature calibration device for an incubator, including a processor 500 and a memory 501. Optionally, the device 500 may further include a communication interface 502 and a bus 503. The processor 500, communication interface 502, and memory 501 can communicate with each other via the bus 503. The communication interface 502 can be used for information transmission. The processor 500 can call logical instructions in the memory 501 to execute the temperature calibration method for an incubator described in the above embodiment.

[0127] Furthermore, the logic instructions in the aforementioned memory 501 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0128] The memory 501, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 500 executes functional applications and data processing by running the program instructions / modules stored in the memory 501, thereby implementing the temperature calibration method for the incubator described above.

[0129] The memory 501 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 501 may include high-speed random access memory and may also include non-volatile memory.

[0130] This disclosure also provides an incubator, including: an incubator body, and the aforementioned temperature calibration device for the incubator. The temperature calibration device for the incubator is installed on the incubator body. The installation relationship described herein is not limited to placement inside the incubator body, but also includes installation connections with other components of the incubator, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the temperature calibration device for the incubator can be adapted to feasible incubator bodies, thereby realizing other feasible embodiments.

[0131] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described temperature calibration method for an incubator.

[0132] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, such as a USB flash drive, external hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc., and other media capable of storing program code.

[0133] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0134] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0135] The methods and products disclosed in the embodiments herein (including but not limited to devices and equipment) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to implement this embodiment according to actual needs. In addition, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0136] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A temperature calibration method for an incubator, characterized in that, include: Obtain real-time temperature readings during incubator operation; When the change in the real-time temperature detection value indicates that the incubator is in a stable temperature state, the power parameters of the incubator heater are obtained; Based on the power parameters of the heater, determine the corresponding calibration correction value; The actual calibration value is determined based on the calibration correction value and the initial calibration value of the incubator, and the temperature detection value of the incubator is calibrated using the actual calibration value.

2. The temperature calibration method according to claim 1, characterized in that, The power parameters of the heater include at least one of the heater's control output parameters, equivalent output power, or duty cycle.

3. The temperature calibration method according to claim 1, characterized in that, The step of determining the corresponding calibration correction value based on the power parameters of the heater includes: Based on the power parameters of the heater, determine the power output ratio of the heater; Determine the corresponding calibration correction value based on the power output ratio of the heater; The calibration correction value exhibits a monotonic variation trend with the power output ratio.

4. The temperature calibration method according to claim 3, characterized in that, The calibration correction value increases as the power output ratio increases, and decreases as the power output ratio decreases.

5. The temperature calibration method according to claim 1, characterized in that, The step of determining the corresponding calibration correction value based on the power parameters of the heater includes: Based on the power parameters of the heater, determine the power output ratio of the heater; The corresponding calibration correction value is determined based on the power range to which the power output ratio belongs.

6. The temperature calibration method according to claim 5, characterized in that, The step of determining the corresponding calibration correction value based on the power range to which the power output ratio belongs includes: Based on the power range, determine the calibration correction value corresponding to the power range from the pre-established correspondence between power ranges and calibration correction values; The correspondence is established in the form of a correspondence table or a correspondence function.

7. The temperature calibration method according to claim 1, characterized in that, The changes in the real-time temperature detection values ​​indicate whether the incubator is in a stable temperature state, including: Obtain the change range of the real-time temperature detection value within a preset time period; If the change is less than a preset threshold, the incubator is determined to be in a stable temperature state.

8. The temperature calibration method according to claim 1, characterized in that, The process of determining the actual calibration value based on the calibration correction value and the initial calibration value of the incubator includes: Calculate T2 = T1 + t; The actual calibration value T2 is obtained; Where T2 is the actual calibration value, T1 is the initial correction value, and t is the calibration correction value.

9. A temperature calibration device for an incubator, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute, when running the program instructions, the temperature calibration method for an incubator as described in any one of claims 1 to 8.

10. An incubator, characterized in that, include: Incubator body; The temperature calibration device for an incubator as described in claim 9 is installed on the incubator body.

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