KR20240061205A - Electronic body temperature thermometer with temperature compensating function and measuring method thereof - Google Patents

Abstract

The present invention increases the temperature of the probe area where the temperature sensor is configured when the temperature of the thermometer for measuring body temperature corresponds to a preset low temperature, and also increases the measured temperature by reflecting changes in the environmental temperature of the temperature sensor due to the artificial increase in the temperature. It relates to an electronic thermometer equipped with a temperature compensation function to increase the accuracy of body temperature measurement by compensating and a method of measuring body temperature thereof, comprising forming a heating resistor on the back of a board on which a temperature sensor module is placed, and measuring the outside temperature of the temperature sensor module. Based on the value, the heating resistor is operated to raise the outside temperature to the target temperature range, and after the temperature sensor module obtains the target temperature output compensated according to the outside temperature, the temperature sensor module compensates for the forcibly manipulated environmental temperature change. By calculating the final secondary compensated target temperature by reflecting it in the output, there is an effect of reducing the time to reach the environmental temperature for measurement even at low temperatures and increasing measurement accuracy by double compensating for errors due to the environmental temperature.

Description

Electronic body temperature thermometer with temperature compensating function and measuring method thereof}

The present invention is an electronic thermometer equipped with a temperature compensation function and a method of measuring body temperature thereof. When the temperature of the thermometer for body temperature measurement corresponds to a preset low temperature, the temperature of the probe area configured with the temperature sensor is increased, and the temperature is artificially adjusted. This relates to an electronic thermometer equipped with a temperature compensation function that improves the accuracy of body temperature measurement by compensating the measured temperature by reflecting changes in the environmental temperature of the temperature sensor due to rise and a method of measuring body temperature.

Among electronic thermometers, infrared thermometers measure the body temperature by receiving infrared rays emitted from the human body by an infrared sensor and measuring changes in the measurement sensor according to the infrared rays.

Since body temperature measurement using an infrared sensor is sensitive to ambient temperature, significant errors may occur when body temperature is measured in an external environment that is different from the temperature of the human body.

Therefore, by using a thermoelectric element (Peltier element) that can increase or decrease the temperature of the probe part of the probe area where the temperature sensor of the thermometer is located, the measured temperature is increased or decreased and the temperature of the space itself of the probe area is controlled. However, in the case of such thermoelectric elements, when the temperature on one side is adjusted, the other side changes to the opposite temperature, making it difficult to apply to small devices such as thermometers and increasing costs. Furthermore, since we want to control the temperature of the space itself, there is a problem that the time required to stabilize the temperature becomes longer.

In addition, most of the non-contact infrared temperature measurement sensor modules in recent use have their own function to compensate for the external temperature, so if the temperature of the probe area is forcibly adjusted, it conflicts with the compensation function of the sensor module, resulting in a different measurement result. may occur.

Therefore, it is necessary to quickly reach the measurement temperature and compensate for the measurement results of the temperature sensor module due to forced temperature control.

Korean Patent Publication No. 10-2022-0119491 [Title of invention: Predictive electronic thermometer circuit structure implementing temperature compensation] Korean Patent No. 10-2016-0013034 [Title of invention: Temperature compensation thermometer and method using distance measurement sensor]

The purpose of the present invention to solve the above problems is to configure a heating resistor to increase the temperature of the substrate on the back of the substrate corresponding to the probe unit on which the temperature sensor module is placed, and to measure the temperature of the surrounding environment of the temperature sensor module based on the temperature measurement value of the surrounding environment. By providing power to the heating resistor to quickly heat the substrate, the environmental temperature within the probe area where the temperature sensor module is placed increases from the temperature sensor module area, but quickly reaches the target temperature range and reaches the measurable target environmental temperature. In this case, the temperature sensor module obtains a target temperature output that is first compensated according to the environmental temperature, and then the secondary compensation for the change in external air that is forcibly manipulated is reflected in the output of the temperature sensor module to calculate the final double-compensated target temperature. The aim is to provide an electronic thermometer with a temperature compensation function that improves measurement accuracy through double compensation and a method of measuring body temperature.

Another object of the present invention is to configure a heating resistor on the back of the substrate on which the temperature sensor module is disposed, and to configure a heat dissipation pattern to first spread the heat of the heating resistor to peripheral areas that are not in direct contact with the temperature sensor module, thereby reducing the relative heat dissipation. An electronic thermometer equipped with a temperature compensation function that uniformly heats the surrounding temperature of the temperature sensor module while minimizing the temperature change time of the measurement environment due to low temperature outdoor air and a method of measuring body temperature are provided.

Another purpose of the present invention is to determine the error situation by identifying the current flow for the power supplied for heating when heating the heating resistor according to the external air measurement temperature of the temperature sensor module and identifying abnormalities in the heating resistor. An electronic thermometer with a temperature compensation function and a method for measuring body temperature are provided.

An electronic thermometer with a temperature compensation function according to an embodiment of the present invention includes a user interface unit that displays the thermometer status and measured temperature and receives a measurement request input from the user, and measures the temperature of the target and the surrounding environment using an infrared method. , a temperature sensor module that provides an environmental temperature value for the surrounding environmental temperature and a target temperature value compensated for the temperature of the target according to the surrounding environmental temperature, a substrate on which the temperature sensor module is disposed, and a substrate on which the temperature sensor module is disposed. A heating element configured on the back of a heating element, a heating element driving unit that provides driving power to the heating element according to a control signal, and the surrounding environmental temperature received through the temperature sensor module according to the measurement request input received through the user interface unit is the first standard. If the temperature is lower than the temperature, a control signal is provided to the heating element drive unit to generate heat to the heating element to increase the environmental temperature of the surrounding area of the temperature sensor module. When the environmental temperature of the surrounding area received through the temperature sensor module reaches the second reference temperature range, the After stopping the heating element heat generation by providing a control signal to the heating element driver, the target temperature measured through the temperature sensor module is received, and the offset compensation value considering the forcibly heated environmental temperature difference is reflected in the target temperature to determine the secondary compensated target temperature. It is characterized by including a control unit that calculates the calculation and then displays it through a user interface unit.

As an example, the control unit divides the difference between the target temperature (T1) measured through the temperature sensor module and the surrounding environment temperature (Tambi) by the coefficient (coeff) value determined through experiments for each temperature section to determine the offset value according to forced heating. After calculation, the secondary compensated target temperature (Tcore) can be calculated by adding it to the measured target temperature (T1).

As an example, the heating element is composed of a heating resistor, and the heating element driving unit provides power to the heating resistor according to a control signal from the control unit, measures an operating current according to the power supplied to the heating resistor, and provides the operating current to the control unit. The control unit determines whether there is an abnormality in the heating element according to the operating current value. If an abnormality occurs, the control unit notifies the abnormal condition through the user interface unit and then operates the temperature sensor module without changing the external temperature to display the received target temperature as is through the user interface unit. It can be displayed through wealth.

As an example, the heating element may be configured in an area outside the corresponding position on the back of the temperature sensor module to prevent the generated heat from being directly transmitted to the temperature sensor module.

As an example, the substrate includes a first radiation area surrounding the temperature sensor module so as not to directly contact the temperature sensor module, and a second radiation area disposed in direct contact with the heating element and heated according to the temperature generated, and the first radiation The area and the second radiation area can be brought into contact on one side so that the heat generated by the heating element can be quickly transferred to the substrate area surrounding the temperature sensor module.

Furthermore, the area of the first radiation area can be increased as the distance from the heating element increases, thereby reducing the temperature deviation of the first radiation area surrounding the temperature sensor module, and further includes a third radiation area surrounding the substrate, , the third radiation area may be in contact with the second radiation area.

A method of measuring body temperature of an electronic thermometer with a temperature compensation function according to another embodiment of the present invention includes a user interface unit that receives user input and displays temperature and status, a temperature sensor module, and the temperature of the substrate on which the temperature sensor module is placed. A method of measuring body temperature of an electronic thermometer including a control unit that controls a heating element through a heating element drive unit, wherein the control unit determines the temperature of the surrounding environment received through the temperature sensor module according to a measurement request input received through the user interface unit. 1 If the temperature is lower than the reference temperature, providing a control signal to the heating element drive unit to generate heat to the heating element to increase the environmental temperature of the surrounding area of the temperature sensor module, and the surrounding environmental temperature received by the control unit through the temperature sensor module is set to a second standard. When the temperature range is reached, providing a control signal to the heating element drive unit to stop heat generation of the heating element and then waiting for a stabilization time, wherein the control unit receives the target temperature measured through the temperature sensor module after the stabilization time and performs forced heating. It includes the step of calculating a secondary compensated target temperature by reflecting the compensation value considering the environmental temperature difference to the target temperature and then displaying the secondary compensated target temperature through the user interface unit.

As an example, the step of calculating the secondary compensated target temperature and then displaying it through the user interface means that the control unit calculates the difference between the target temperature (T1) measured through the temperature sensor module and the surrounding environment temperature (Tambi). It may include calculating an offset value according to forced heating by dividing it by the coefficient (coeff) value determined through section-specific experiments, and then adding it to the measured target temperature (T1) to calculate the secondary compensated target temperature (Tcore). there is.

An electronic thermometer with a temperature compensation function and a method of measuring body temperature thereof according to an embodiment of the present invention comprise a heating resistor on the back of a substrate on which a temperature sensor module is placed, and the heating resistor is based on the measured value of the external temperature of the temperature sensor module. operates to raise the outside temperature to the target temperature range, and after the temperature sensor module obtains a target temperature output compensated according to the outside temperature, compensation for the forced environmental temperature change is reflected in the output of the temperature sensor module, and finally By calculating the secondary compensated target temperature, there is an effect of reducing the time to reach the environmental temperature for measurement even at low temperatures and increasing measurement accuracy by double compensating for errors due to the environmental temperature.

An electronic thermometer with a temperature compensation function and a method for measuring body temperature thereof according to another embodiment of the present invention include forming a heating resistor on the back of the substrate on which the temperature sensor module is placed, and also transmitting heat from the heating resistor directly to the temperature sensor module. By configuring the heat dissipation pattern to spread first to non-contact surroundings, the relatively low environmental temperature is quickly raised, while the surrounding temperature of the temperature sensor module is raised uniformly, thereby increasing the reliability of the temperature sensor module's primary compensation measurement value. There is a possible effect.

An electronic thermometer with a temperature compensation function and a method of measuring body temperature thereof according to another embodiment of the present invention make it impossible to manipulate the environmental temperature by detecting abnormalities in the heating resistor when heating the heating resistor according to the ambient temperature measured by the temperature sensor module. This has the effect of notifying the user of the condition and displaying the temperature measured in the absence of environmental temperature manipulation, thereby allowing the thermometer to be used continuously despite a failure of the configuration for environmental temperature manipulation.

Figure 1 is an example diagram showing the configuration of the probe part of a general infrared thermometer.
Figure 2 is an example diagram showing the configuration of a probe using a flexible substrate.
Figure 3 is an example diagram showing the configuration of the probe using a substrate.
Figures 4 and 5 are diagrams illustrating the configuration of a probe equipped with a heating element according to an embodiment of the present invention.
Figure 6 is an example diagram showing a variation in the arrangement of the heating element.
Figure 7 is a configuration diagram showing the configuration of a thermometer according to an embodiment of the present invention.
Figure 8 is a flowchart showing the operation process of a thermometer according to an embodiment of the present invention.
9 and 10 are exemplary diagrams showing the configuration of a radiation area according to an embodiment of the present invention.

It should be noted that the technical terms used in the present invention are only used to describe specific embodiments and are not intended to limit the present invention. In addition, the technical terms used in the present invention, unless specifically defined in a different sense in the present invention, should be interpreted as meanings generally understood by those skilled in the art in the technical field to which the present invention pertains, and should not be overly comprehensive. It should not be interpreted as meaningless or in an excessively reduced sense. Additionally, if the technical terms used in the present invention are incorrect technical terms that do not accurately express the idea of the present invention, they should be replaced with technical terms that can be correctly understood by those skilled in the art. In addition, general terms used in the present invention should be interpreted according to the definition in the dictionary or according to the context, and should not be interpreted in an excessively reduced sense.

Additionally, as used in the present invention, singular expressions include plural expressions unless the context clearly dictates otherwise. In the present invention, terms such as “consists of” or “comprises” should not be construed as necessarily including all of the various components or steps described in the invention, and some of the components or steps may not be included. It should be interpreted that it may or may further include additional components or steps.

Additionally, terms including ordinal numbers, such as first, second, etc., used in the present invention may be used to describe components, but the components should not be limited by the terms. Terms are used only to distinguish one component from another. For example, a first component may be named a second component without departing from the scope of the present invention, and similarly, the second component may also be named a first component.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. However, identical or similar components will be assigned the same reference numbers regardless of the reference numerals, and duplicate descriptions thereof will be omitted.

Additionally, when describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted. In addition, it should be noted that the attached drawings are only intended to facilitate easy understanding of the spirit of the present invention, and should not be construed as limiting the spirit of the present invention by the attached drawings.

Figures 1 to 3 are examples showing the configuration of the probe part of a general infrared thermometer. Figure 1 shows the appearance of the probe part of a general infrared thermometer, and Figure 2 is an example diagram showing the structure of the probe part using a flexible substrate. , Figure 3 is an exemplary diagram showing a substrate applied to the configuration of the probe using a substrate.

First, Figure 1a shows the configuration of a thermometer probe for measuring the temperature of the eardrum in the ear, and a temperature sensor module 20 is configured at the inner tip of the external case 10 of the probe.

1B and 1C show the configuration of the non-contact infrared thermometer probe for measuring the body temperature of exposed surfaces such as the forehead or arm. As shown, the probe area is concave in the central part of the outer case 11 and 12 of the probe. Temperature sensor modules 21 and 22 are configured.

Figure 2 shows an internal structure 30 for configuring the probe area of the in-ear thermometer of Figure 1a, which has a relatively narrow tip shape, and a flexible substrate that allows a temperature sensor module 50 to be placed at the tip of the structure 30. The bonding structure of (40) was shown.

Figure 3 shows a probe area corresponding board 60 commonly used in Figures 1b and 1c. A temperature sensor module 70 is placed in the center of the upper part of the board 60, and a connector for electrical connection is placed on the other side. (80) is constructed.

In this configuration of the thermometer probe board, a temperature sensor module is placed on one side, but the corresponding board space on the other side is empty.

Meanwhile, since temperature changes due to domestic seasonal environment are usually lower than body temperature, the temperature of the probe area is often increased rather than lowered, so the probe temperature, that is, the temperature around the temperature sensor module, is adjusted through the heating element. It is sufficient to apply the raising method.

Therefore, in an embodiment of the present invention, a heating resistance as a heating element is placed on the back of the substrate on which the temperature sensor module is placed, and it is operated based on the surrounding environment temperature to increase the temperature of the surrounding environment of the temperature sensor module.

Figures 4 and 5 are examples of the present invention showing a case in which a heating resistor is disposed on the back of a substrate on which a temperature sensor module is disposed.

FIG. 4 shows a heating resistor 131 disposed on the back of the temperature sensor module 111 disposed on one side of the flexible substrate 101.

Figure 5 shows a heating resistor 130 disposed on the other side of the substrate 100 where the temperature sensor module 110 is located in the center.

As shown, as the heating resistor 130 is disposed as a heating element on the other side of the substrate 100 on which the temperature sensor module 110 is disposed, heat due to heating is indirectly transmitted through the substrate 100 to the temperature sensor module ( By allowing the temperature to be transmitted to 110), the temperature of the temperature sensor module 110 in the probe area can quickly increase.

Figure 6 shows the arrangement position of the heating resistor 130 according to an embodiment of the present invention, and Figure 6a is not directly on the back of the temperature sensor module 110 as shown in Figure 5, but is disposed biased to one side so as not to overlap. This is the case, and FIG. 6b is a case where the heating resistor 131 is disposed immediately below the temperature sensor module 110 to overlap the position of the temperature sensor module 110, as shown in FIG. 4.

In both cases, since the heat generated is through the substrate 100, the heat generated first heats the substrate 100 and does not directly heat the temperature sensor module 110.

However, in the case of Figures 4 and 6b, since the heating resistance is placed immediately below the temperature sensor module, the temperature deviation of the heating resistance can be directly applied to the temperature sensor module, so the temperature sensor module sets the target temperature based on the environmental temperature. There is a problem that the reliability of the environmental temperature used for self-primary compensation may be lowered.

Therefore, as in the case of Figures 9 or 10, a radiation area 250 may be formed that can uniformly spread the temperature of the heating element to the surrounding area without directly applying it to the temperature sensor module.

The substrate 200 shown in FIGS. 9 or 10 may be applied to the upper or lower portion of a substrate on which a temperature sensor is disposed, or as an intermediate substrate of a multilayer substrate. As shown, the area 230 on which the heating resistor is disposed is the above. It is desirable to configure it in an area outside the corresponding position on the back of the temperature sensor module so that the generated heat is not directly transmitted to the temperature sensor module.

The substrate 200 includes a first radiation area 252 that surrounds the temperature sensor module so as not to directly contact the temperature sensor module, and a second radiation area 251 that is disposed in direct contact with the heat resistance and is heated according to the temperature generated. The first radiation area 252 and the second radiation area 252 are in contact with each other on one side so that the heat generated by the heating resistance can be quickly transferred to the substrate area surrounding the temperature sensor module.

Meanwhile, as shown in FIG. 9, the area of the first radiation area 252 increases as it becomes farther away from the heating resistance to reduce the temperature deviation (based on the temperature sensor module) of the first radiation area 252 surrounding the temperature sensor module. can do.

Furthermore, as shown in FIG. 10, it may further include a third radiation region 253 surrounding the substrate and a connection radiation region 254 connecting the first radiation region 251 and the third radiation region 253. The radiation area 253 may be in contact with the second radiation area 251 and the connecting radiation area 254.

Figure 7 is a configuration diagram showing the configuration of a thermometer 300 according to an embodiment of the present invention.

As shown, the thermometer 300 includes a user interface unit 330 that displays the thermometer status and measured temperature and receives a measurement request input from the user, measures the temperature of the target and the surrounding environment using an infrared method, and calculates the temperature of the surrounding environment. A temperature sensor module 340 that provides a target temperature value compensated for the environmental temperature value and the temperature of the target according to the surrounding environmental temperature, a substrate (not shown) on which the temperature sensor module 340 is placed, and a temperature sensor module ( A heating element 360 configured on the back of the substrate on which 340) is disposed, a heating element driver 350 that provides driving power to the heating element 360 according to a control signal, and a measurement request input received through the user interface unit 330. Accordingly, if the surrounding environment temperature received through the temperature sensor module 340 is lower than the first reference temperature, a control signal is provided to the heating element driver 350 to generate heat in the heating element 360, thereby changing the surrounding environment of the temperature sensor module 340. The temperature is raised, and when the surrounding environmental temperature received through the temperature sensor module 340 reaches the second reference temperature range, a control signal is provided to the heating element driver 350 to stop the heating element 360 from generating heat, and then the temperature sensor Receives the target temperature measured through the module 340, calculates the secondary compensated target temperature by reflecting the offset compensation value considering the forcibly heated environment temperature difference to the target temperature, and displays it through the user interface unit 330. It includes a control unit 310 that supplies power, and a power unit 320 that supplies power.

The user interface unit 330 includes a display unit that displays the status of the thermometer to the user (power, preparation for measurement, available for measurement, measurement temperature, whether an abnormality occurs, etc.), an input unit for turning on the power or providing a measurement request input, and , It includes an audio output unit that provides sound guidance on measurement preparation and measurement status.

The temperature sensor module 340 may be, for example, an MLX90 series temperature sensor module from Melexis, which provides accuracy when the sensor is in thermal equilibrium and isothermal conditions (no temperature difference across the entire sensor module package). guaranteed. The accuracy of the thermometer may be affected by temperature differences in the package caused by heating/cooling of adjacent parts of the sensor module package, but the sensor's own algorithm goes through a correction step for temperature variations and uses information stored in the sensor's EEPROM. By calculating the temperature, the influence of such external temperature changes is reduced.

The temperature sensor module calculates Ta (environmental temperature) to calculate To (target temperature) and uses this value to calculate To. The calculation of To (object temperature) is performed iteratively, in the first iteration To is assumed to be 25°C, in the second iteration the results of the first iteration are used, and in the third iteration the final result is obtained. Furthermore, this process is repeated multiple times to obtain the average or maximum value to calculate the final result.

In this way, the commercial temperature sensor module primarily calculates the target temperature based on the environmental temperature, so the influence of the external temperature is reduced, but the measurement accuracy at low temperatures (below 10 degrees Celsius) outside the measurement range is considerably lower. It becomes lower. Therefore, when the temperature sensor module is heated through the heating element and the target environmental temperature reaches the desired level, the internal primary correction of the temperature sensor module 340 as above is performed at the target environmental temperature, so that the target measured at the target environmental temperature Temperature reliability can be improved.

However, as the heating element 360 is heated, the environmental temperature is forcibly and quickly raised, so errors occur due to the forced temperature change. Therefore, this must be additionally compensated.

In an embodiment of the present invention, the control unit 310 converts the difference between the target temperature (T1) measured through the temperature sensor module 340 and the surrounding environment temperature (Tambi) into a coefficient (coeff) value determined through an experiment for each temperature section. After dividing to calculate the offset value according to forced heating, it is added to the measured target temperature (T1) to calculate the secondary compensated target temperature (Tcore).

The coefficient (coeff) value confirmed through experiments for each temperature section may be a coefficient value for a comprehensive temperature section, but it can be determined through experiments for temperature ranges that change by heating, such as 3 degrees, 5 degrees, etc. The coefficient can be determined, and an appropriate coefficient can be applied based on the temperature change range due to heating.

On the other hand, a relatively accurate and inexpensive heating resistance can be used as the heating element 360, but when such a heating element is heated by providing a high current, a malfunction may occur due to deterioration of the connection part or the heating resistance.

In this way, if the heating element 360 does not operate normally, the process of the control unit 310 operating the heating element 360 to the target temperature may continue and all operations of the thermometer may be stopped. If the target temperature is not reached, a plurality of If corrections are made, the measurements become unreliable.

However, even if there is a failure in the heating element 360, it can be used as long as the external temperature is 10 degrees or higher (normal measurement range of the temperature sensor module), so it does not completely stop the use of the thermometer, but only causes a failure in the external temperature compensation function. It must be indicated and ensure continuous use of the thermometer.

Therefore, as shown, the heating element driver 350 provides power to the heating element 360 according to the control signal from the control unit, and measures the operating current according to the power supplied to the heating element 360 (for example, a heating resistor) to the control unit. It is provided to 310, and the control unit 310 determines whether the heating element 360 is abnormal according to the operating current value.

If the operating current of the heating element 360 is below the standard, the control unit 310 notifies the abnormal condition through the user interface unit 330 and then operates the temperature sensor module 340 without changing the external temperature to obtain the target target. The temperature can be displayed as is through the user interface unit 330.

Figure 8 is a flowchart showing the operation process of a thermometer according to an embodiment of the present invention.

As shown, a user interface unit 330 that receives user input and displays temperature and status, a temperature sensor module 340, and a heating element 360 that heats the temperature of the substrate on which the temperature sensor module 340 is placed A method of measuring the body temperature of an electronic thermometer 300 including a control unit 310 controlled through a heating element drive unit 350, wherein the control unit 310 measures the temperature sensor module 340 according to a measurement request input received through the user interface unit. Request environmental temperature measurement.

When the environmental temperature measured through the temperature sensor module 340 falls within the low temperature reference range (for example, 5 to 15 degrees Celsius), the control unit 310 provides a control signal to the heating element driver 350 to provide power, thereby heating the heating element 360. ) generates heat.

Thereafter, the control unit 310 measures the temperature of the surrounding environment through the temperature sensor module 340, and when the environmental temperature reaches the measurement reference range (for example, 15 to 20 degrees) that can measure the target body temperature, the control unit 310 measures the temperature of the surrounding environment. A control signal is provided to 350 to cut off the power supply, thereby stopping the heat generation of the heating element 360, and then waiting for a stabilization time.

After the stabilization time, the control unit 310 receives the first corrected target temperature measured through the temperature sensor module 340 and reflects the compensation value considering the forcibly heated environmental temperature difference to the first compensated target temperature to obtain the second compensated target temperature. The target temperature is calculated and displayed through the user interface unit.

This configuration of the present invention can be implemented through physical means such as electronic devices, circuit boards, and integrated circuit chips, and a significant portion of these may be configured inside a programmable chip. Anyone skilled in the art to which the present invention pertains can make modifications and changes to the above-described content without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

300: thermometer 310: control unit
320: power unit 330: user interface unit
340: Temperature sensor module 350: Heating element driving unit
360: heating element

Claims (9)

a user interface unit that displays the thermometer status and measured temperature and receives a measurement request input from the user;
A temperature sensor module that measures the temperature of the target and the surrounding environment using an infrared method and provides an environmental temperature value for the surrounding environment temperature and a target temperature value compensated for the temperature of the target according to the surrounding environment temperature;
a substrate on which the temperature sensor module is disposed;
a heating element formed on the back of the substrate on which the temperature sensor module is disposed;
a heating element driving unit that provides driving power to the heating element according to a control signal;
If the surrounding environment temperature received through the temperature sensor module is lower than the first reference temperature according to the measurement request input received through the user interface unit, a control signal is provided to the heating element driver to generate heat to the heating element to control the surrounding environment of the temperature sensor module. The temperature is raised, and when the surrounding environmental temperature received through the temperature sensor module reaches the second reference temperature range, a control signal is provided to the heating element driver to stop heating the heating element, and then the target temperature measured through the temperature sensor module is reached. Equipped with a temperature compensation function, comprising a control unit that receives the offset compensation value considering the forcibly heated environmental temperature difference and reflects it on the target temperature to calculate a secondary compensated target temperature and then displays it through a user interface unit. One electronic thermometer.
The method according to claim 1, wherein the control unit divides the difference between the target temperature (T1) measured through the temperature sensor module and the surrounding environment temperature (Tambi) by a coefficient (coeff) value determined through an experiment for each temperature section to determine the temperature according to forced heating. An electronic thermometer with a temperature compensation function, characterized in that the offset value is calculated and then added to the measured target temperature (T1) to calculate the secondary compensated target temperature (Tcore).
The method according to claim 1, wherein the heating element is composed of a heating resistor, and the heating element driver provides power to the heating resistor according to a control signal from the control unit, and measures an operating current according to the power supplied to the heating resistor and provides the operating current to the control unit. The control unit determines whether there is an abnormality in the heating element according to the operating current value, and when an abnormality occurs, notifies the abnormal condition through the user interface unit and then operates the temperature sensor module without changing the external temperature to determine the received target temperature. An electronic thermometer with a temperature compensation function that is displayed as is through the user interface unit.
The electronic thermometer with a temperature compensation function according to claim 1, wherein the heating element is configured in an area outside the corresponding position on the back of the temperature sensor module to prevent the generated heat from being directly transmitted to the temperature sensor module.
The method according to claim 1, wherein the substrate includes a first radiation area surrounding the temperature sensor module so as not to directly contact the temperature sensor module, and a second radiation area disposed in direct contact with the heating element and heated according to the temperature generated, and An electronic thermometer with a temperature compensation function, wherein the first radiation area and the second radiation area are in contact on one side so that the heat generated by the heating element is quickly transferred to the substrate area surrounding the temperature sensor module.
The electronic thermometer with a temperature compensation function according to claim 5, wherein the area of the first radiation area increases as the distance from the heating element increases, thereby reducing the temperature deviation of the first radiation area surrounding the temperature sensor module. .
The electronic thermometer according to claim 5, further comprising a third radiation area surrounding the substrate, wherein the third radiation area is in contact with the second radiation area.
A method of measuring body temperature of an electronic thermometer including a user interface unit that receives user input and displays temperature and status, a temperature sensor module, and a control unit that controls a heating element that heats the temperature of the substrate on which the temperature sensor module is placed through a heating element drive unit. ,
When the surrounding environmental temperature received through the temperature sensor module is lower than the first reference temperature according to the measurement request input received through the user interface unit, the control unit provides a control signal to the heating element driver to generate heat to the heating element, thereby generating the temperature sensor module. increasing the temperature of the surrounding environment;
When the surrounding environmental temperature received through the temperature sensor module by the control unit reaches a second reference temperature range, providing a control signal to the heating element driving unit to stop heating the heating element and then waiting for a stabilization time;
The control unit receives the target temperature measured through the temperature sensor module after the stabilization time, reflects the compensation value considering the forcibly heated environmental temperature difference to the target temperature, calculates a secondary compensated target temperature, and then calculates the secondary compensated target temperature through the user interface unit. A method of measuring body temperature using an electronic thermometer with a temperature compensation function, comprising the step of displaying.
The method of claim 8, wherein the step of calculating the secondary compensated target temperature and then displaying it through the user interface unit comprises: the control unit calculating the target temperature (T1) and the surrounding environment temperature (Tambi) measured through the temperature sensor module; Calculate the offset value according to forced heating by dividing the difference by the coefficient (coeff) value determined through experiments for each temperature section, and then add it to the measured target temperature (T1) to calculate the secondary compensated target temperature (Tcore). A method of measuring body temperature using an electronic thermometer with a temperature compensation function, comprising:

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