Detection device and method for correcting detected values

Abstract

The present invention provides a detection device equipped with a light-emitting unit that can accurately correct the temperature detected by a sensor and perform appropriate display related to the temperature, and a method for correcting the detected value in the detection device. [Solution] The thermometer 1 comprises at least a sensor 20 for detecting temperature, a display unit 22 for displaying the detected temperature, a light-emitting unit 24 for indicating temperature-related information by the color of light emitted, and a control means 9. The control means 9 comprises an acquisition unit 92 for acquiring elapsed time information of the light-emitting unit 24 emitting light, a recognition unit 93 for recognizing the intensity of the light emitted by the light-emitting unit 24, a plurality of correction temperature tables T1 to T4 for indicating a correction temperature to correct the temperature detected by the sensor 20 based on the elapsed time information acquired by the acquisition unit 92 and selected according to the recognized light intensity, and a calculation unit 94 for calculating the corrected temperature from the corrected temperature determined using the selected correction temperature tables T1 to T4 and the temperature detected by the temperature and humidity sensor 20.

Description

Technical Field

[0001] The present invention relates to a detection device and a method for correcting a detection value.

Background Art

[0002] A thermometer and hygrometer as a detection device for notifying the current temperature and current humidity, for example, incorporates a contact-type or non-contact-type temperature and humidity sensor, and the temperature and humidity in a room or the like detected by the temperature and humidity sensor are displayed numerically on a display unit such as a liquid crystal panel (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] The detection device of the present invention comprises a main body, a sensor disposed in the main body that detects at least temperature, a display unit that displays the temperature detected by the sensor, a light-emitting unit disposed in the main body that indicates temperature-related information by its light-emitting pattern, and control means for controlling the entire device. The control means comprises an acquisition unit that acquires information on the elapsed time during which at least the light-emitting unit is emitting light, a recognition unit that recognizes the intensity of the light emitted by the light-emitting unit, a plurality of correction temperature tables that indicate a correction temperature for correcting the temperature detected by the sensor based on the elapsed time information acquired by the acquisition unit and are selected according to the intensity of the light recognized by the recognition unit, and a calculation unit that calculates a corrected temperature from the correction temperature determined using the selected correction temperature table and the temperature detected by the sensor. [Effects of the Invention]

[0008] The present invention provides a detection device equipped with a heat-generating light-emitting part such as an LED, which can accurately correct the temperature detected by a sensor and perform appropriate display related to the temperature, and a method for correcting the detected value in such a detection device. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view of the temperature and humidity meter (detection device) of this embodiment, placed on a tabletop. [Figure 2] This is an example of a front view of the thermometer / hygrometer of this embodiment. [Figure 3] This block diagram shows the physical configuration of the display unit and other components, and the electrical connection between them and the control means. [Figure 4] This is an explanatory diagram illustrating multiple desktop temperature correction tables and out-of-range temperature correction tables. [Figure 5] This is an explanatory diagram illustrating multiple wall-mounted temperature correction tables and out-of-range temperature correction tables. [Figure 6] This is an explanatory diagram illustrating multiple desktop humidity correction tables and out-of-range humidity correction tables. [Figure 7] This is an explanatory diagram illustrating multiple wall-mounted humidity correction tables and out-of-range humidity correction tables. [Figure 8] This is a flowchart illustrating each step of the temperature and humidity correction method (detection value correction method) of Embodiment 1. [Figure 9] This is an explanatory diagram illustrating the case in which the correction temperature is searched from a desktop correction temperature table in the temperature and humidity correction method of Embodiment 1. [Figure 10] This is an explanatory diagram illustrating the case in which the corrected humidity is retrieved from a desktop corrected humidity table in the temperature and humidity correction method of Embodiment 1. [Figure 11] This is a flowchart illustrating each step of the temperature and humidity correction method of Embodiment 2. [Figure 12] This is an explanatory diagram illustrating the case in which the correction temperature is searched from a desktop correction temperature table in the temperature and humidity correction method of Embodiment 2. [Figure 13] This is an explanatory diagram illustrating the case in which the corrected humidity is searched from a desktop corrected humidity table in the temperature and humidity correction method of Embodiment 2. [Figure 14] This is a flowchart illustrating each step of the temperature and humidity correction method of Embodiment 3. [Figure 15] This is an explanatory diagram illustrating the case in which the correction temperature is searched from a desktop correction temperature table or an out-of-range correction temperature table in the temperature and humidity correction method of Embodiment 3. [Figure 16] This is an explanatory diagram illustrating the case in which the corrected humidity is searched from a desktop corrected humidity table or an out-of-range corrected humidity table in the temperature and humidity correction method of Embodiment 3. [Modes for carrying out the invention]

[0010] Hereinafter, an embodiment of the thermometer (detection device) 1 will be disclosed with reference to FIGS. 1 to 3. In each of the above figures, for convenience, directions (X direction, Y direction, Z direction) are defined. The X direction, Y direction, and Z direction are orthogonal to each other. For example, the plane formed by the X direction and Y direction is taken as the horizontal plane, and the Z direction is taken as the vertical direction. The X-axis direction includes the +X direction and the -X direction. The Y-axis direction includes the +Y direction and the -Y direction. The Z-axis direction includes the +Z direction and the -Z direction. Note that the detection device according to the present invention is not limited to a thermometer.

[0011] FIG. 1 is a perspective view of the thermometer 1 according to an embodiment of the present invention placed on a table (not shown). For example, the thermometer 1 arranged indoors includes a main body portion 10, a temperature and humidity sensor (sensor) 20 arranged in the main body portion 10 for detecting temperature and humidity, a light emitting portion 24 arranged in the main body portion 10 for indicating an example of information related to the indoor temperature and humidity, such as the heat index and the level of dryness, in a light emitting manner, and a control means 9 for controlling the entire thermometer 1. Note that the thermometer 1 may be arranged outdoors and used. In the present embodiment, the light emitting portion 24 is configured to indicate information related to temperature and humidity by differences in the colors of light emission. However, it may be indicated not only by differences in the colors of light emission but also by differences in light emission patterns, light emission modes, etc.

[0012] The main body portion 10 has, for example, a casing 100 made of a translucent material such as plastic. The casing 100 is formed, for example, in a substantially quadrangular pyramid shape (pyramid shape). The casing 100 may be formed in a triangular pyramid shape, a cylindrical shape, a rectangular parallelepiped shape, etc., or other shapes. For example, the temperature and humidity sensor 20, the light emitting portion 24, the control means 9, etc. are built in the casing 100.

[0013] Legs 101 for supporting the casing 100 are respectively arranged at the four corners of the rectangular lower surface 100a of the casing 100 shown in FIG. 2 in plan view (only two are shown). In FIGS. 1 to 2, the thermometer 1 is placed on a table (not shown) arranged indoors such that the four legs 101 are in contact.

[0014] In Figure 1, an adapter socket 102 for power supply is provided on the lower side of the rear surface 100b of the casing 100 facing the +X direction. The temperature and humidity meter 1 is electrically connected to a power outlet (not shown) in the room via the adapter. In addition, multiple ventilation holes 103 are formed on the rear surface 100b, which serve as air passages leading to the inside of the casing 100.

[0015] For example, the thermometer / hygrometer 1 is equipped with a buzzer (not shown) inside the casing 100 that sounds an alarm when the indoor heat index exceeds a dangerous level. The alarm sound emitted by the buzzer is transmitted to the outside of the casing 100, for example, through the ventilation opening 103.

[0016] A display unit 22, which displays temperature, humidity, etc., is provided on the lower side of the front surface 100c of the casing 100 shown in Figure 2. The display unit 22 is, for example, a liquid crystal display (LCD). The display unit 22 may also be an OLED (Electro-Luminescence) display or the like. The display unit 22 is, for example, trapezoidal and has a substantially flat front surface that serves as the display surface. The display unit 22 can display, for example, temperature 22a (Celsius temperature: °C) and relative humidity 22b on the lower side, and various settings for the thermometer / hygrometer 1 on the upper side. The display unit 22 may be equipped with, for example, a touch panel, in which case the user can operate the display unit 22 by touch operation.

[0017] On the side 100d of the casing shown in Figure 1, for example, from the -X direction to the +X direction, a power button 31 for switching the temperature and humidity meter 1 on and off by the user, an LED button 32, a set button 33, a selection button 36, and an illuminance sensor 15 are arranged in that order. When the user presses the power button 31, the power turns on, the display unit 22 displays measured values ​​for temperature and humidity, and the light-emitting unit 24 lights up as shown in Figure 2. The power button 31, LED button 32, set button 33, and selection button 36 together constitute the input means 3.

[0018] As partially shown in Figure 2, the various settings for the thermometer / hygrometer 1 that can be displayed on the upper side of the display unit 22 are the seasonal mode 220, the on / off indicator for the illuminance sensor 15 221, and the on / off indicator for a buzzer (not shown) 222. The seasonal mode 220 is displayed as a heat index mark 220a or a dryness level mark 220b. The heat index is an index for preventing heatstroke, and its unit is the same as the air temperature, Celsius, and it can be switched between the lower temperature display 22a and the heat index. The value of the heat index differs from the air temperature; it is an index that focuses on the heat exchange (heat balance) between the human body and the outside air, and incorporates three factors that have a large impact on the heat balance of the human body: humidity, the surrounding thermal environment such as solar radiation and radiant heat, and air temperature.

[0019] By pressing the set button 33 shown in Figure 1, you can select the desired function from the seasonal mode 220, the on / off indicator 221 for the illuminance sensor 15, and the on / off indicator 222 for the buzzer, as shown in Figure 2. With seasonal mode 220 selected, you can press the select button 36 to select either the heat index mark 220a or the dryness level mark 220b, and display the heat index or dryness level on the display unit 22. The heat index can be displayed alternately with the indoor temperature per unit time. The dryness level is displayed, for example, in absolute humidity, and the display unit 22 can alternate between absolute humidity and relative humidity per unit time. Note that absolute humidity is measured in 1m³ 3 This indicates the mass of water vapor contained in the air, and the unit is g / m³. 3 Relative humidity is the percentage (%) of the amount of moisture contained in air relative to the maximum amount of moisture that can be contained in air at a given temperature.

[0020] The illuminance sensor 15 shown in Figure 1 is installed in the casing 100 with a portion exposed. After setting the function of the illuminance sensor 15 using the set button 33, it can be turned on or off using the selection button 36. When the illuminance sensor 15 is turned on, the light-emitting unit 24 automatically turns off when the location where the thermometer / hygrometer 1 is installed becomes dark and automatically turns on when it becomes bright. As shown in Figure 3, the control means 9 may also control the brightness mode (level) of the light-emitting unit 24 to an appropriate mode based on the detected value information sent from the illuminance sensor 15 to the control means 9.

[0021] With the buzzer function set using the set button 33 shown in Figure 1, it can be turned on or off using the selection button 36. When the buzzer function is turned on, for example, when the heat index detected by the thermometer / hygrometer 1 is at a severe warning or danger level, a buzzer (not shown) will sound an alarm.

[0022] In this embodiment, the temperature and humidity sensor 20 is disposed inside the casing 100, but it may also be disposed on the outer surface of the casing 100. The location of the temperature and humidity sensor 20 is not limited, but a location where the effect of temperature rise is minimal, such as the corner of the bottom surface 100a, is preferred. The temperature and humidity sensor 20 acquires environmental information representing the temperature and relative humidity around the user in the room. The temperature and humidity sensor 20 is composed of a temperature sensor and a humidity sensor. The temperature sensor may be a resistance thermometer type, a linear resistor type, a thermistor type, or any other type, and the humidity sensor may be a resistance change type, a capacitance change type, or any other type.

[0023] The temperature and humidity sensor 20 is installed inside the casing 100, for example, with its detection surface facing the passage through which air flows from the vent 103 shown in Figure 1 to the inside of the casing 100, and is electrically connected to the control means 9 as shown in Figure 3. In this embodiment, the temperature measurement range of the temperature and humidity sensor 20 is set to 0°C to 50°C. The control means 9 can also calculate the absolute humidity based on the relative humidity and temperature of the natural air detected by the temperature and humidity sensor 20.

[0024] As shown in Figure 2, the thermometer / hygrometer 1 is equipped with a screw-fastened mounting bracket 100f, for example, in the approximate central area of ​​its lower surface 100a. By engaging the wall-mounting holes in the mounting bracket 100f with the heads of screws attached to the wall of the room, the thermometer / hygrometer 1 can be mounted on a wall (not shown) in the room.

[0025] The thermometer / hygrometer 1 is equipped with, for example, a three-axis type acceleration sensor (not shown). The acceleration sensor measures the applied acceleration (gravity) and transmits the measurement information to the control means 9 via a wireless or wired communication path (not shown). The control means 9 then calculates the tilt of the thermometer / hygrometer 1 from the measurement information of the acceleration sensor and can determine the tilt state of the thermometer / hygrometer 1, for example, whether the thermometer / hygrometer 1 is placed on a table or mounted on a wall. Note that the thermometer / hygrometer 1 does not necessarily have to be equipped with the acceleration sensor, and the acceleration sensor may be of a different type than the one described above.

[0026] If the thermometer / hygrometer 1 is equipped with an acceleration sensor (not shown), the control means 9 can automatically determine whether the thermometer / hygrometer 1 is placed on a table or the like as shown in Figure 1, or mounted on a wall (not shown). In this embodiment, for the display unit 22 of the thermometer / hygrometer 1 shown in Figure 2 when it is placed on a table or the like, it is possible to invert the display of the display unit 22 when the thermometer / hygrometer 1 is mounted on a wall. For example, if the user sets the wall-mounted inversion mode using the set button 33 and then selects that the thermometer / hygrometer 1 is wall-mounted using the selection button 36, the display of the display unit 22 will be inverted vertically. Information about this selection is then sent to the control means 9, and the control means 9 determines that the thermometer / hygrometer 1 is wall-mounted.

[0027] The control means 9 shown in Figures 1 and 3 is responsible for controlling the operation of each circuit within the thermometer / hygrometer 1, in other words, it controls the entire thermometer / hygrometer 1, and is mainly composed of a CPU that performs calculations according to a control program, and memory elements such as memory. The control means 9 is also electrically connected to the illuminance sensor 15, the temperature / humidity sensor 20, and the display unit 22 via wireless or wired communication paths, and receives detection information about the brightness of the room from the illuminance sensor 15 and detected values ​​about the temperature and humidity of the room from the temperature / humidity sensor 20, and sends signals to the display unit 22 for displaying temperature and humidity.

[0028] The light-emitting unit 24, shown in a simplified form in Figure 1, is disposed inside the casing 100 and is a light-emitting module on which elements such as multiple LEDs (Light Emitting Diodes) are mounted. As an example, each of the multiple LED elements includes a red LED chip 241 that emits red light, a blue LED chip 242 that emits blue light, a green LED chip 243 that emits green light, an orange LED chip 244 that emits orange light, and a yellow LED chip 245 that emits yellow light. The light-emitting unit 24 may also emit various colors of light by selectively combining two or more of these LED elements. Furthermore, it is not limited to these, and a configuration that is generally in practical use may also be used.

[0029] The light emission control circuit of the control means 9 independently controls the red LED chips 241 to the yellow LED chips 245, so that the light emission unit 24 irradiates the surface to be illuminated with light of any color. In this embodiment, the surface to be illuminated is the upper side of the two sides 100d, the front 100c, and the back 100b of the casing 100, that is, the upper side of the roughly square pyramidal shaped casing 100. The light emitted from the light emission unit 24 is partially reflected and diffused by the surface to be illuminated, so that the entire upper side of the casing 100 is lit with the color of the desired LED chip. The light emission unit 24 may be arranged as oblique light illumination that shines diagonally upward from the inside of the casing 100 onto the upper side of the casing 100, or it may be arranged as coaxial illumination that is coaxial with a virtual axis passing through the apex of the casing 100.

[0030] In this embodiment, the control means 9 shown in Figure 1 comprises a storage unit (not shown) consisting of memory elements such as a memory; an acquisition unit 92 that acquires information on the elapsed time during which the light-emitting unit 24 is emitting light; a recognition unit 93 that recognizes the intensity of the light emitted by the light-emitting unit 24; a plurality of correction temperature tables (see Figures 4, 5, etc.) that indicate a correction temperature for correcting the temperature detected by the temperature and humidity sensor 20 based on the elapsed time information acquired by the acquisition unit 92 and are selected according to the intensity of light recognized by the recognition unit 93; and a calculation unit 94 that calculates the corrected temperature from the correction temperature determined using the selected correction temperature table and the temperature detected by the temperature and humidity sensor 20. The functions of the recognition unit 93, acquisition unit 92, correction temperature tables and calculation unit 94 will be described later.

[0031] Furthermore, the control means 9 in this embodiment includes a plurality of corrected humidity tables (see Figures 6, 7, etc.) which indicate a corrected humidity for correcting the humidity detected by the temperature and humidity sensor 20, determined based on the elapsed time information acquired by the acquisition unit 92, and are selected according to the light intensity recognized by the recognition unit 93.

[0032] With the thermometer / hygrometer 1 shown in Figure 2 set to seasonal mode 220 to display the heat index, the control means 9 calculates the warning level for indoor environments where the user is likely to suffer from heatstroke from the temperature and relative humidity detected by the temperature / humidity sensor 20, as well as from a commonly used and pre-stored wet-bulb temperature table, and illuminates the light-emitting unit 24 in, for example, four stages (four colors). A heat index of 31 or higher is considered "dangerous," and the red LED chip 241 of the light-emitting unit 24 lights up, causing the upper side of the casing 100 to illuminate red. A heat index of 28 or higher but less than 31 is considered "extreme caution," and the orange LED chip 244 lights up, causing the upper side of the casing 100 to illuminate orange. A heat index of 25 or higher but less than 28 is considered "caution," and the yellow LED chip 245 lights up, causing the upper side of the casing 100 to illuminate yellow. When the heat index is below 25, it becomes a "caution" state, and the blue LED chip 242 lights up, causing the upper side of the casing 100 to illuminate in blue.

[0033] With the thermometer / hygrometer 1 set to seasonal mode 220 to indicate the dryness level, the control means 9 causes the light-emitting unit 24 to emit light in, for example, two stages (two colors) to indicate the dryness level (absolute humidity) of the indoor environment. Dryness level 11 g / m 3 The following is a "Caution": The yellow LED chip 245 of the light-emitting section 24 lights up, and the upper side of the casing 100 illuminates yellow. Also, the dryness level is 11 g / m². 3 When the value exceeds a certain threshold, it is considered "good," and the green LED chip 243 lights up, causing the upper side of the casing 100 to illuminate green.

[0034] In this embodiment, the thermometer / hygrometer 1 allows the user to select a brightness mode for each LED chip of the light-emitting unit 24, according to the lighting environment of the room in which the thermometer / hygrometer 1 is installed, by pressing the LED button 32 shown in Figure 1. The brightness mode refers to the intensity of the light. For example, each time the LED button 32 is pressed, the brightness mode of each LED chip can be changed in the following order: low brightness mode (lowest brightness), medium brightness mode, high brightness mode (highest brightness), eco mode (a mode in which the light-emitting unit 24 illuminates only when the heat index is "severe caution" or "danger," or when the dryness level is "caution"), and off mode (a mode in which the light-emitting unit 24 does not illuminate, and only the display unit 22 displays an information).

[0035] The recognition unit 93 of the control means 9 continuously monitors the change in brightness mode and the light intensity (brightness mode) of the light-emitting unit 24 while the temperature and humidity meter 1 is operating. The acquisition unit 92 of the control means 9 also measures the elapsed time from the moment the light-emitting unit 24 is turned on.

[0036] Figure 4 shows multiple desktop correction temperature tables stored in the memory unit of the control means 9, categorized by the intensity (brightness mode) of light emitted by the light-emitting unit 24. Each desktop correction temperature table is a first correction temperature table selected according to the tilt state of the thermometer / hygrometer 1, and is selected when the thermometer / hygrometer 1 is placed on a table as shown in Figure 1. Each desktop correction temperature table shown in Figure 4 is represented as a line graph with the correction temperature (°C) on the vertical axis and the elapsed time (minutes) during which the light-emitting unit 24 is emitting light on the horizontal axis. Desktop correction temperature table T1 is the correction temperature table when the thermometer / hygrometer 1 is placed on a table and the light emitted by each LED chip (for example, red LED chip 241) of the light-emitting unit 24 recognized by the recognition unit 93 is in high brightness mode.

[0037] The desktop correction temperature table T2 shown in Figure 4 is the correction temperature table when the light emitted by the light-emitting unit 24 is in medium brightness mode. The desktop correction temperature table T3 is the correction temperature table when the light emitted by the light-emitting unit 24 is in low brightness mode. The desktop correction temperature table T4 is the correction temperature table when the light emitted by the light-emitting unit 24 is in eco brightness mode. The number of desktop correction temperature tables is not limited to this embodiment. Desktop correction temperature tables T1 to T4 have been determined experimentally, empirically, or theoretically. As shown in desktop correction temperature tables T1 to T4, the correction temperature becomes a constant value after an elapsed time of 40 minutes.

[0038] The control means 9 in this embodiment includes an out-of-range correction temperature table Ta shown in Figure 4. The out-of-range correction temperature table Ta may be used for temperature correction when the thermometer / hygrometer 1 is used while placed on a tabletop, and the light-emitting unit 24 is changed to emit light at a second light intensity different from the first light intensity after emitting light at a first light intensity for a predetermined time.

[0039] Figure 5 shows multiple wall-mounted correction temperature tables stored in the memory unit of the control means 9, categorized by the intensity (brightness mode) of light emitted by the light-emitting unit 24. Each wall-mounted correction temperature table is a second correction temperature table selected according to the tilt state of the thermometer / hygrometer 1, and is used when the thermometer / hygrometer 1 is mounted on a wall. Each wall-mounted correction temperature table is shown as a line graph with the correction temperature (°C) on the vertical axis and the elapsed time (minutes) during which the light-emitting unit 24 is emitting light on the horizontal axis. Wall-mounted correction temperature table T5 is the correction temperature table for when the thermometer / hygrometer 1 is mounted on a wall and the light emitted by each LED chip of the light-emitting unit 24 recognized by the recognition unit 93 is in high brightness mode.

[0040] The wall-mounted correction temperature table T6 shown in Figure 5 is the correction temperature table when the light emitted by the light-emitting unit 24 is in the medium brightness mode. The wall-mounted correction temperature table T7 is the correction temperature table when the light emitted by the light-emitting unit 24 is in the low brightness mode. Note that the wall-mounted correction temperature table T6 and the wall-mounted correction temperature table T7 are the same graph and are shown superimposed. The wall-mounted correction temperature table T8 is the correction temperature table when the light emitted by the light-emitting unit 24 is in the eco brightness mode. The number of wall-mounted correction temperature tables is not limited to this embodiment. The wall-mounted correction temperature tables T5 to T8 have been determined experimentally, empirically, or theoretically. As shown in the wall-mounted correction temperature tables T5 to T8, the correction temperature remains constant after 40 minutes of elapsed time.

[0041] The control means 9 includes an out-of-range correction temperature table Tb shown in Figure 5. The out-of-range correction temperature table Tb may be used when the thermometer / hygrometer 1 is mounted on a wall and the light-emitting unit 24 is modified to emit light at a second light intensity different from the first light intensity after emitting light at a first light intensity for a predetermined time.

[0042] Figure 6 shows multiple desktop correction humidity tables stored in the memory unit of the control means 9, categorized by the intensity (brightness mode) of light emitted by the light-emitting unit 24. Each desktop correction humidity table is a first correction humidity table selected according to the tilt state of the thermometer / hygrometer 1, and is used when the thermometer / hygrometer 1 is placed on a tabletop. Note that the higher the room temperature, the higher the saturated water vapor pressure; therefore, if the water vapor pressure of the air is the same, the higher the room temperature, the lower the relative humidity. For example, each desktop correction humidity table is shown as a line graph with the vertical axis representing the correction humidity (%) and the horizontal axis representing the elapsed time (minutes) during which the light-emitting unit 24 is emitting light. Desktop correction humidity table T11 is the correction humidity table for the state shown in Figure 1, where the thermometer / hygrometer 1 is placed on a tabletop, and the light emitted by the light-emitting unit 24 recognized by the recognition unit 93 is in high brightness mode.

[0043] Desktop Correction Humidity Table T21 is the correction humidity table for when the light emitted by the light-emitting unit 24 is in medium brightness mode. Desktop Correction Humidity Table T31 is the correction humidity table for when the light emitted by the light-emitting unit 24 is in low brightness mode. Desktop Correction Humidity Table T41 is the correction humidity table for when the light emitted by the light-emitting unit 24 is in eco brightness mode. Note that the number of desktop correction humidity tables is not limited to this embodiment. Desktop Correction Humidity Tables T11 to T41 have been determined experimentally, empirically, or theoretically. Note that, as shown in Desktop Correction Humidity Tables T11 to T41, the corrected humidity becomes constant after 40 minutes of elapsed time.

[0044] The control means 9 includes an out-of-range correction humidity table Tc shown in Figure 6. The out-of-range correction humidity table Tc may be used when the thermometer / hygrometer 1 is used while placed on a tabletop, and when the light-emitting unit 24 is changed to emit light at a second light intensity different from the first light intensity after emitting light at a first light intensity for a predetermined time.

[0045] Figure 7 shows multiple wall-mounted corrected humidity tables, each stored in the memory of the control unit 9, according to the intensity (brightness mode) of the light emitted by the light-emitting unit 24. Each wall-mounted corrected humidity table is a second corrected humidity table selected according to the tilt state of the thermometer / hygrometer 1, and is used when the thermometer / hygrometer 1 is mounted on a wall. For example, each wall-mounted corrected humidity table is shown as a line graph with the corrected humidity (%) on the vertical axis and the elapsed time (minutes) that the light-emitting unit 24 has been emitting light on the horizontal axis. Wall-mounted corrected humidity table T51 is a corrected humidity table for when the thermometer / hygrometer 1 is mounted on a wall and the light emitted by the light-emitting unit 24 recognized by the recognition unit 93 is in high brightness mode.

[0046] The wall-mounted corrected humidity table T61 is the corrected humidity table for when the light emitted by the light-emitting unit 24 is in medium brightness mode. The wall-mounted corrected humidity table T71 is the corrected humidity table for when the light emitted by the light-emitting unit 24 is in low brightness mode. The wall-mounted corrected humidity table T81 is the corrected humidity table for when the light emitted by the light-emitting unit 24 is in eco brightness mode. Note that the wall-mounted corrected humidity tables T61, T71, and T81 are the same graph and are displayed overlaid. The number of wall-mounted corrected humidity tables is not limited to this embodiment. The wall-mounted corrected humidity tables T51 to T81 have been determined experimentally, empirically, or theoretically. As shown in the wall-mounted corrected humidity tables T51 to T81, the corrected humidity becomes constant after 40 minutes of elapsed time.

[0047] The control means 9 includes an out-of-range correction humidity table Td shown in Figure 7. The out-of-range correction humidity table Td may be used when the thermometer / hygrometer 1 is used while mounted on a wall, and when the light-emitting unit 24 is modified to emit light at a second light intensity different from the first light intensity after emitting light at a first light intensity for a predetermined time.

[0048] (Temperature and humidity correction method according to Embodiment 1) The operation of the thermometer / hygrometer 1 of this embodiment and each step of the temperature and humidity correction method (detection value correction method) of Embodiment 1 will be described below. Figure 8 is a flowchart illustrating the flow of each step of the temperature and humidity correction method of Embodiment 1 executed by the control means 9. The temperature and humidity correction method of Embodiment 1 includes, for example, a temperature and humidity sensor value acquisition step (sensor value acquisition step), an elapsed time acquisition step (acquisition step), a light emission intensity recognition step (recognition step), a correction temperature table selection step, a corrected temperature calculation step, and a corrected humidity calculation step. Each step will be described below.

[0049] For example, with power supplied to the tabletop thermometer / hygrometer 1 shown in Figures 1 and 2, when the user turns on the power button 31, the measured temperature and humidity values ​​are displayed on the display unit 22, making the user able to visually check the temperature and humidity in the room. In addition, when the light-emitting unit 24 lights up, the user can immediately determine which of the four heat index levels the room is at simply by looking at the top of the thermometer / hygrometer 1. In this embodiment, when the light-emitting unit 24 is first lit, the brightness mode of each LED chip in the light-emitting unit 24 is set to high brightness mode. Also, the function setting of the thermometer / hygrometer 1 is set to seasonal mode 220 to display the heat index.

[0050] 1) Process for acquiring temperature and humidity sensor values For example, let's consider temperature and humidity correction at a point when the above state of the thermometer / hygrometer 1 is maintained and 10 minutes have elapsed since the light-emitting unit 24 turned on. The temperature and humidity sensor 20 detects the temperature and humidity in the room, and the detected values ​​are said to be a temperature of 35°C and a relative humidity of 75%. In the temperature and humidity correction method of this embodiment, the control means 9 first acquires these detected temperature and humidity values ​​(step S101). That is, the detected value information is transmitted from the temperature and humidity sensor 20 to the control means 9.

[0051] 2) Elapsed time acquisition process When the processing in step S101 is completed, the control means 9 proceeds to step S102. In step S102, the acquisition unit 92 of the control means 9 measures the elapsed time from the initial moment when the light-emitting unit 24 was lit in high brightness mode as 10 minutes.

[0052] 3) Luminous intensity recognition process When the processing in step S102 is completed, the control means 9 proceeds to step S103. In step S103, the recognition unit 93 recognizes that the brightness mode (light intensity) of each LED chip in the light-emitting unit 24 is set to the high brightness mode.

[0053] 4) Correction temperature table selection process When the processing in step S103 is completed, the control means 9 proceeds to step S104. In this embodiment, the thermometer / hygrometer 1 is placed on a table (not shown), and the brightness of the red light emitted by the red LED chip 241 of the light-emitting unit 24, recognized by the recognition unit 93 of the control means 9, has not been changed from the beginning, as it is in high brightness mode. Therefore, in step S104, the calculation unit 94 selects the tabletop correction temperature table T1 shown in Figure 4.

[0054] 5) Post-correction temperature calculation process When the processing in step S104 is completed, the control means 9 moves on to step S105. In step S105, the calculation unit 94 searches the desktop correction temperature table T1 for the correction temperature after 10 minutes of elapsed time, as shown in Figure 9, in the order of the up arrow [1] to the left arrow [2], and determines that it is approximately -1.5°C.

[0055] Furthermore, the calculation unit 94 calculates the corrected temperature of the room where the thermometer / hygrometer 1 is installed using the following formula (1). The corrected temperature is the accurate temperature of the room. Corrected temperature (°C) = Temperature detected by temperature and humidity sensor 20 (°C) + Corrected temperature (°C) ... (1) From equation (1), the corrected temperature = 35°C + (-1.5°C) = 33.5°C.

[0056] When the calculation unit 94 calculates a corrected temperature of 33.5°C, the control means 9 causes the display unit 22 to display the corrected temperature of 33.5°C as the accurate temperature of the room.

[0057] 6) Post-correction humidity calculation process Furthermore, in the temperature and humidity correction method (detection value correction method) of this embodiment, a corrected humidity calculation step is performed. The temperature and humidity meter 1 is placed on a tabletop, and the intensity of the light emitted by the light-emitting unit 24 recognized by the recognition unit 93 has not been changed from the beginning in the high brightness mode. Therefore, when the processing of step S105 is completed, the calculation unit 94 selects the tabletop corrected humidity table T11 shown in Figure 10, and searches the tabletop corrected humidity table T11 for the corrected humidity value at a time elapsed of 10 minutes, in the order of the up arrow [1] to the left arrow [2], and determines it to be 2%.

[0058] Furthermore, the calculation unit 94 calculates the corrected humidity in the room where the thermometer / hygrometer 1 is installed using the following formula (2) (step S106). The corrected humidity is the accurate relative humidity of the room. Corrected humidity (°C) = Humidity detected by temperature and humidity sensor 20 (relative humidity) (%) + Corrected humidity (%) ... (2) From equation (2), the corrected humidity = 75% + 2% = 77%. When the calculation unit 94 calculates a corrected humidity of 77%, the control means 9 causes the display unit 22 to display the corrected humidity of 77% as the accurate relative humidity of the room.

[0059] After performing the temperature and humidity corrections described above, the calculation processing unit (not shown) of the control means 9 calculates the heat index again. If the heat index level changes, the red LED chip 241 of the light-emitting unit 24 stops emitting light and makes the LED chip corresponding to the changed heat index level emit light in high brightness mode. Furthermore, after the corrected humidity calculation process (step S106) shown in Figure 8 is completed, the control means 9 repeats the process from the temperature and humidity sensor value acquisition process (step S101) again.

[0060] The above explanation of temperature and humidity correction is based on the situation after 10 minutes have elapsed. For example, in the thermometer / hygrometer 1, between the start of illumination of the light-emitting unit 24 and the 10-minute mark, the desktop correction temperature table T1 and desktop correction humidity table T11 (which are graphs) are referenced, and the correction temperature and humidity are determined every minute. Furthermore, the corrected temperature and corrected humidity are calculated and the display on the display unit 22 is changed every 10 seconds.

[0061] As described above, the thermometer / hygrometer (detection device) 1 and the temperature / humidity correction method (detection value correction method) of Embodiment 1 of this embodiment allow the user to easily recognize the indoor heat index or dryness level via the light-emitting unit 24. Furthermore, the calculation unit 94 can determine an accurate correction temperature using the elapsed time information acquired by the acquisition unit 92 and the desktop correction temperature table T1 selected according to the light intensity recognized by the recognition unit 93. In addition, the calculation unit 94 can calculate, for example, the accurate corrected temperature of the room from the corrected temperature and the temperature detected by the temperature / humidity sensor 20. The display unit 22 can then display the accurate temperature of the room.

[0062] Furthermore, in this embodiment, the thermometer and hygrometer 1 and the thermometer and hygrometer correction method of Embodiment 1 allow the calculation unit 94 to determine an accurate corrected humidity using the elapsed time information acquired by the acquisition unit 92 and the desktop correction humidity table T11 selected according to the light intensity recognized by the recognition unit 93. In addition, the accurate corrected temperature of the room can be calculated from the corrected humidity and the humidity detected by the thermometer and hygrometer sensor 20. The accurate humidity of the room can then be displayed on the display unit 22.

[0063] In this embodiment, since the thermometer / hygrometer 1 is placed on a table as shown in Figure 1, the tabletop correction temperature table (first correction temperature table) T1 shown in Figure 4 is selected in the correction temperature table selection step. If the thermometer / hygrometer 1 is used while mounted on a wall, the wall-mounted correction temperature table (second correction temperature table) T5 shown in Figure 5 is used in the correction temperature table selection step (step S104), and the subsequent steps are carried out in substantially the same manner as above. Similarly, in the corrected humidity calculation step, the wall-mounted correction humidity table T51 shown in Figure 7 is used. In other words, whether the thermometer / hygrometer 1 of this embodiment is used while placed on a table or mounted on a wall, the calculation unit 94 can accurately determine the corrected temperature and humidity according to the tilt state of the thermometer / hygrometer 1.

[0064] (Temperature and humidity correction method of Embodiment 2) The following describes each step of the temperature and humidity correction method of Embodiment 2, and the operation of the thermometer 1 in each step. Figure 11 is a flowchart illustrating the flow of each step of the temperature and humidity correction method of Embodiment 2. In the temperature and humidity correction method of Embodiment 2, unlike the temperature and humidity correction method of Embodiment 1, the light-emitting unit 24 is modified to emit light at a first light intensity for a predetermined time, and then emit light at a second light intensity different from the first light intensity. The temperature and humidity correction method of Embodiment 2 includes a step of acquiring temperature and humidity sensor values, a step of acquiring elapsed time, a step of recognizing light intensity, a step of selecting a pre-correction temperature table and a step of selecting a post-correction temperature table, a step of calculating the pre-correction temperature and a step of calculating the post-correction temperature, and a step of calculating the corrected humidity.

[0065] In this embodiment, the brightness mode of each LED chip in the light-emitting unit 24 of the thermometer / hygrometer 1 shown in Figure 1 is set to high brightness mode (first light intensity) when it is first turned on. Also, the function setting of the thermometer / hygrometer 1 is set to seasonal mode 220 to display the heat index. We will assume that 10 minutes have passed since the light-emitting unit 24 was turned on in high brightness mode, and then the user presses the LED button 32 shown in Figure 2 to change the brightness mode of the light-emitting unit 24 to medium brightness mode (second light intensity). As an example, we will explain the temperature and humidity correction at the point when 10 minutes have passed since the light-emitting unit 24 was turned on in high brightness mode, and the temperature and humidity correction at the point when the user changes the brightness mode of the light-emitting unit 24 to medium brightness mode (second light intensity) and another 10 minutes have passed since the change. Note that the change in the brightness mode of the light-emitting unit 24 may be performed automatically by the control means 9 based on the detection value of the illuminance sensor 15.

[0066] 1) Process for acquiring temperature and humidity sensor values With power supplied to the tabletop thermometer / hygrometer 1 shown in Figures 1 and 2, the user can turn on the power button 31 shown in Figure 2 to display the measured temperature and humidity values ​​on the display unit 22, making the user able to visually check the room's temperature and humidity. In addition, the light-emitting unit 24 lights up in high brightness mode, allowing the user to immediately determine which of the four heat index levels the room is at simply by looking at the top of the thermometer / hygrometer 1.

[0067] For example, suppose that 10 minutes have passed since the light-emitting unit 24 was turned on in high brightness mode, and the temperature and humidity sensor 20 has detected the temperature and humidity, and the detected values ​​are 35°C and 75% relative humidity. In the temperature and humidity correction method of this embodiment, the control means 9 first acquires these detected temperature and humidity values ​​(step S202).

[0068] 2) Elapsed time acquisition process When the process in step S202 is completed, the control means 9 proceeds to step S204. In step S204, the acquisition unit 92 of the control means 9 measures the elapsed time from when the temperature and humidity meter 1 was powered on and the light-emitting unit 24 was lit in high brightness mode as 10 minutes.

[0069] 3) Luminous intensity recognition process When the processing in step S204 is completed, the control means 9 proceeds to step S206. In step S206, the recognition unit 93 recognizes that the brightness mode of each LED chip in the light-emitting unit 24 is set to the high brightness mode.

[0070] 4) Selection process for the pre-change correction temperature table When the processing in step S206 is completed, the control means 9 proceeds to step S208. At this point, the thermometer / hygrometer 1 is in the state shown in Figure 1, placed on a tabletop, and the intensity of the light emitted by the light-emitting unit 24 recognized by the recognition unit 93 is in high brightness mode until 10 minutes have elapsed since the start of lighting. Therefore, in step S208, the control means 9 selects the tabletop correction temperature table T1 shown in Figure 12 by the calculation unit 94 in order to perform temperature correction for the first 10 minutes.

[0071] 5) Process for calculating the corrected temperature before modification When the processing in step S208 is completed, the control means 9 moves on to step S210. In step S210, the calculation unit 94 searches for the corrected temperature value based on the desktop corrected temperature table T1 shown in Figure 12, for example, at the point when 10 minutes have elapsed, in the order of the up arrow [1] to the left arrow [2], and determines that it is -1.5℃. -1.5℃ becomes the pre-corrected temperature for the temperature detected by the temperature and humidity sensor 20, which is based on the information from the 10 minutes of elapsed time when the light-emitting unit 24 emitted light at the first light intensity (high brightness mode). Furthermore, the calculation unit 94 uses formula (1) to calculate that the corrected temperature in the room at the point when 10 minutes have elapsed since the light-emitting unit 24 emitted light in high brightness mode is 33.5℃, and displays the corrected temperature of 33.5℃ as the accurate temperature in the room on the display unit 22.

[0072] 6) Post-correction humidity calculation process When the processing of step S210 is completed, the control means 9 proceeds to step S212. In step S212, the control means 9 further performs a corrected humidity calculation process. The thermometer and hygrometer 1 is placed on a tabletop, and for the first 10 minutes after the light-emitting unit 24 is turned on, the intensity of the red light emitted by the light-emitting unit 24 is in high brightness mode. Therefore, the calculation unit 94 selects the tabletop corrected humidity table T11 shown in Figure 13. For example, regarding the corrected humidity at the point of 10 minutes of elapsed time, the calculation unit 94 searches the tabletop corrected humidity table T11 in the order of the up arrow [1] to the left arrow [2] and determines that it is 2%. The calculation unit 94 uses equation (2) to calculate the corrected humidity in the room = 77%, and displays the corrected humidity of 77% as the accurate humidity in the room on the display unit 22.

[0073] When the processing in step S212 is completed, the control means 9 proceeds to step S214. In step S214, the control means 9 determines whether or not there has been a change in the brightness of the light-emitting unit 24. For example, if the light-emitting unit 24 is changed to the medium brightness mode, in step S214, the control means 9 determines that there has been a change in brightness (step S214: Yes) and proceeds to step S216. On the other hand, if the brightness of the light-emitting unit 24 is not changed to the medium brightness mode, the control means 9 determines that there has been no change in brightness (step S214: No) and returns to step S202, and repeats the series of processes from the temperature and humidity sensor value acquisition step before the change in the brightness mode of the light-emitting unit 24 to the corrected humidity calculation step.

[0074] 7) Selection process for the corrected temperature table after modification After 10 minutes have elapsed since the start of light emission, the intensity of the light emitted by the light-emitting unit 24 is in the medium brightness mode. Therefore, in step S216, the calculation unit 94 selects the desktop correction temperature table T2 shown in Figure 12 in parallel with the above change in order to perform correction temperature calculation after 10 minutes have elapsed. In this embodiment, the desktop correction temperature table T2 is the modified correction temperature table used when the light-emitting unit 24 has been changed to emit light at a second light intensity (medium brightness mode) that is different from the first light intensity after emitting light at a first light intensity (high brightness mode) for a predetermined time (10 minutes).

[0075] 8) Process for calculating the corrected temperature after modification When the processing in step S216 is completed, the control means 9 moves on to step S218. In step S218, the calculation unit 94 uses the desktop correction temperature table T2 shown in Figure 12 to search in the order of the right arrow [3] to the down arrow [4] starting from -1.5℃ and determines the estimated elapsed time corresponding to the pre-correction temperature of -1.5℃. The estimated elapsed time in the desktop correction temperature table T2 corresponding to the pre-correction temperature of -1.5℃ is approximately 18 minutes. The estimated elapsed time of 18 minutes can be considered as a hypothetical elapsed time assuming that the light-emitting unit 24 was emitting light from the beginning at the second light intensity (medium brightness mode).

[0076] The desktop correction temperature table T2, which shows the period from the estimated elapsed time of 18 minutes to the estimated elapsed time of 28 minutes (an additional 10 minutes have passed), shows the change in correction temperature from the time the light-emitting unit 24 is changed to the second light intensity (medium brightness mode) until an additional 10 minutes have passed. Therefore, for example, when determining the value of the correction temperature 10 minutes after the brightness mode of the light-emitting unit 24 is changed, the calculation unit 94 searches the desktop correction temperature table T2 for the correction temperature at the estimated elapsed time of 28 minutes in the order of the up arrow [5] to the left arrow [6] and determines the correction temperature to be -1.7℃. Then, -1.7℃ becomes the corrected temperature after the change.

[0077] The calculation unit 94 uses equation (1) to calculate that the corrected room temperature at the time the light-emitting unit 24 has been emitting light in medium brightness mode for 10 minutes is 33.3°C, and displays this as the accurate room temperature on the display unit 22.

[0078] 9) Humidity calculation process after correction (after changing brightness mode) When the processing in step S218 is completed, the control means 9 proceeds to step S220. When more than 10 minutes have elapsed since the light-emitting unit 24 was first turned on, the intensity of the light emitted by the light-emitting unit 24 changes to the medium brightness mode. Therefore, in step S220, in parallel with the change in brightness, the calculation unit 94 selects the desktop corrected humidity table T21 shown in Figure 13. Furthermore, the calculation unit 94 calculates the corrected humidity based on the information of the estimated elapsed time. For example, in this embodiment, the information of the estimated elapsed time of 18 minutes obtained in the post-corrected temperature calculation step is used. That is, the desktop corrected humidity table T21 showing the period from the estimated elapsed time of 18 minutes to the estimated elapsed time of 28 minutes (an additional 10 minutes have passed) shows the corrected humidity for the period from when the light-emitting unit 24 is changed to emit light at the second light intensity (medium brightness mode) until another 10 minutes have passed.

[0079] For example, when determining the corrected humidity value 10 minutes after changing the brightness mode of the light-emitting unit 24, the calculation unit 94 searches the desktop corrected humidity table T21 shown in Figure 13 for the corrected humidity at an estimated elapsed time of 28 minutes, in the order of the up arrow [3] to the left arrow [4], and determines that the corrected humidity = 3.6%. Furthermore, the calculation unit 94 uses formula (2) to calculate the corrected humidity = 78.6%, and displays the corrected humidity of 78.6% as the accurate humidity of the room on the display unit 22.

[0080] After correcting the temperature and humidity as described above, the control means 9 calculates the heat index. If the heat index level changes, it controls the red LED chip 241 of the light-emitting unit 24 to change to the corresponding LED chip, and makes the changed LED chip emit light in medium brightness mode. Furthermore, after the corrected humidity calculation step (step S212) is completed, the control means 9 repeats the series of processes from the temperature and humidity sensor value acquisition step after changing the brightness mode of the light-emitting unit 24 to the corrected humidity calculation step.

[0081] As described above, in the thermometer 1 of this embodiment and the temperature and humidity correction method of Embodiment 2, even when the intensity of light emitted by the light-emitting unit 24 is changed, the calculation unit 94 searches for and determines the estimated elapsed time corresponding to the pre-change correction temperature from the desktop correction temperature table T2, which is the post-change correction temperature table, determines the post-change correction temperature for the temperature detected by the temperature and humidity sensor 20 shown in the desktop correction temperature table T2 based on the information of the estimated elapsed time, and further calculates the corrected temperature in the space when the light-emitting unit 24 emits light at the changed light intensity for a predetermined time. Then, it becomes possible to display the accurate temperature of the room on the display unit 22.

[0082] Furthermore, even if the intensity of the light emitted by the light-emitting unit 24 is changed, the temperature and humidity meter 1 of this embodiment can use the calculation unit 94 to refer to the information on the estimated elapsed time previously acquired for temperature correction, determine the corrected humidity after the change for the humidity detected by the temperature and humidity sensor 20 shown in the desktop corrected humidity table (corrected humidity table) T21, and accurately calculate the corrected humidity in the space when the light-emitting unit 24 emits light at the changed light intensity for a predetermined time.

[0083] (Temperature and humidity correction method of Embodiment 3) The following describes each step of the temperature and humidity correction method of Embodiment 3, and the operation of the thermometer 1 in each step. Figure 14 is a flowchart showing each step of the temperature and humidity correction method of Embodiment 3. In the temperature and humidity correction method of Embodiment 3, the light-emitting unit 24 emits light at a first light intensity for a predetermined time, and then changes to emit light at a second light intensity that is different from the first light intensity. The temperature and humidity correction method of Embodiment 3 includes a step of acquiring temperature and humidity sensor values, an elapsed time acquisition step, a light emission intensity recognition step, a pre-correction temperature table selection step, an out-of-range correction temperature table selection step, a post-correction temperature table selection step, a pre-correction temperature calculation step, a post-correction temperature calculation step, and a post-correction humidity calculation step.

[0084] In this embodiment, the brightness mode of the light-emitting unit 24 of the thermometer / hygrometer 1 shown in Figure 1 is assumed to be set to high brightness mode (first light intensity) when it is first turned on. Also, the function setting of the thermometer / hygrometer 1 is set to seasonal mode 220 to display the heat index. For example, we will consider a case where, after 30 minutes have elapsed since the light-emitting unit 24 was turned on in high brightness mode (first light intensity), the user changes the brightness of the light-emitting unit 24 to medium brightness mode (second light intensity). Furthermore, as an example, we will explain the temperature and humidity correction at the point when 30 minutes have elapsed since the light-emitting unit 24 was turned on in high brightness mode, and the temperature and humidity correction at the point when the light-emitting unit 24 is changed to medium brightness mode, and at the point when 5 minutes have elapsed and 10 minutes have elapsed since the change.

[0085] 1) Process for acquiring temperature and humidity sensor values With power supplied to the tabletop thermometer / hygrometer 1 shown in Figures 1 and 2, the user can turn on the power button 31 shown in Figure 2 to display the measured temperature and humidity values ​​on the display unit 22, allowing the user to visually check the temperature and humidity in the room. In addition, the light-emitting unit 24 lights up, allowing the user to immediately determine which of the four heat index levels the room is at simply by looking at the top of the thermometer / hygrometer 1.

[0086] For example, suppose that 30 minutes have passed since the light-emitting unit 24 was turned on in high brightness mode, and the temperature and humidity sensor 20 has detected the temperature and humidity, and the detected values ​​are 35°C and 75% relative humidity. In the temperature and humidity correction method of this embodiment, the control means 9 first acquires these detected temperature and humidity values ​​(step S302).

[0087] 2) Elapsed time acquisition process When the process in step S302 is completed, the control means 9 proceeds to step S304. In step S304, the acquisition unit 92 measures the elapsed time from the moment when the temperature and humidity meter 1 is powered on and the light-emitting unit 24 lights up in high brightness mode as 30 minutes.

[0088] 3) Luminous intensity recognition process When the processing in step S304 is completed, the control means 9 proceeds to step S306. In step S306, the recognition unit 93 recognizes that the brightness mode of the light-emitting unit 24 is set to the high brightness mode.

[0089] 4) Selection process for the pre-change correction temperature table When the processing in step S306 is completed, the control means 9 proceeds to step S308. Here, the thermometer / hygrometer 1 is placed on a tabletop, and the intensity of the light emitted by the light-emitting unit 24 is in high brightness mode until 30 minutes have elapsed. Therefore, in step S304, the control means 9 has the calculation unit 94 select the tabletop correction temperature table T1 shown in Figure 15 in order to perform temperature correction for the period from the start of lighting to 30 minutes of elapsed time.

[0090] 5) Process for calculating the corrected temperature before modification When the processing in step S308 is completed, the control means 9 moves on to step S310. In step S310, the calculation unit 94 searches the desktop correction temperature table T1 shown in Figure 15 for the correction temperature value at the 30-minute mark, following the order of the up arrow [1] to the left arrow [2], and determines that it is -2.5°C. -2.5°C is determined based on the information of the elapsed time (30 minutes) when the light-emitting unit 24 emitted light at the first light intensity, and becomes the pre-correction temperature for the temperature detected by the temperature and humidity sensor 20, which is 35°C, as shown in the desktop correction temperature table T1. Using equation (1), the calculation unit 94 calculates that the corrected room temperature at the time when the light-emitting unit 24 emitted light for 30 minutes in high brightness mode is 32.5°C, and displays it as the accurate temperature on the display unit 22.

[0091] 6) Post-correction humidity calculation process When the processing of step S310 is completed, the control means 9 proceeds to step S312. In step S312, the control means 9 further performs a corrected humidity calculation step. The thermometer and hygrometer 1 is placed on a tabletop, and from the time the light-emitting unit 24 is first turned on until 30 minutes have elapsed, the intensity of the light emitted by the light-emitting unit 24 is in high brightness mode. Therefore, the tabletop corrected humidity table T11 shown in Figure 16 is selected, and the calculation unit 94 searches the tabletop corrected humidity table T11 for the value of the corrected humidity after 30 minutes elapsed, in the order of the up arrow [1] to the left arrow [2], and determines that it is approximately 4.5%. Furthermore, the calculation unit 94 uses formula (2) to calculate the corrected humidity in the room = 79.5%, and displays the corrected humidity of 79.5% as the accurate humidity in the room on the display unit 22.

[0092] When the processing in step S312 is completed, the control means 9 proceeds to step S314. In step S314, the control means 9 determines whether or not there has been a change in the brightness of the light-emitting unit 24. For example, if the light-emitting unit 24 is changed to the medium brightness mode, in step S314, the control means 9 determines that there has been a change in brightness (step S314: Yes) and proceeds to step S316. On the other hand, if the brightness of the light-emitting unit 24 is not changed to the medium brightness mode, the control means 9 determines that there has been no change in brightness (step S314: No) and returns to step S302, and repeats the series of processes from the temperature and humidity sensor value acquisition step before the change in the brightness mode of the light-emitting unit 24 to the corrected humidity calculation step.

[0093] In step S316, the control means 9 determines whether the pre-change correction temperature falls outside the range of the post-change correction temperature table. In step S316, the calculation unit 94, in order to perform temperature correction after 30 minutes of elapsed time, simultaneously changes to the medium brightness mode and attempts to select a suitable table from among the multiple desktop correction temperature tables shown in Figure 15. Desktop correction temperature table T2 becomes a candidate, but when searching for the estimated elapsed time corresponding to the pre-change correction temperature of -2.5℃ at 30 minutes of elapsed time from desktop correction temperature table T2, the pre-change correction temperature of -2.5℃ falls outside the range of desktop correction temperature table T2, where the minimum correction temperature is -1.9℃, and the corresponding estimated elapsed time cannot be determined. In this case, the calculation unit 94 determines in step S316 that the value is outside the range (step S316: Yes) and proceeds to step S318.

[0094] On the other hand, as shown in Figure 15, from the left arrow [7] to the down arrow [8], if the estimated elapsed time exceeds 7 minutes after the estimated elapsed time of 2 minutes (the point at which the estimated elapsed time is 9 minutes), the out-of-range correction temperature table Ta shown in Figure 15 falls within the range of the correction temperature shown in the desktop correction temperature table T2. This is because the minimum correction temperature shown in the desktop correction temperature table T2 is -1.9°C. In this case, the calculation unit 94 determines in step S316 that the value is not out of range (step S316: No) and proceeds to step S320.

[0095] 7) Out-of-range correction temperature table selection process In step S318, the calculation unit 94 selects the out-of-range correction temperature table Ta shown in Figure 15 instead of the desktop correction temperature table T2.

[0096] The calculation unit 94 searches for the estimated elapsed time corresponding to the pre-correction temperature of -2.5°C at 30 minutes after the initial lighting, based on the out-of-range correction temperature table Ta, in the order of the right arrow [3] to the down arrow [4], with the starting point being -2.5°C. As shown in Figure 15, the estimated elapsed time in the out-of-range correction temperature table Ta corresponding to the pre-correction temperature of -2.5°C is determined to be 2 minutes.

[0097] The calculation unit 94 determines the modified correct temperature based on the out-of-range correct temperature table Ta until the out-of-range correct temperature table Ta falls within the range of correct temperatures indicated by the desktop correct temperature table T2.

[0098] For example, when determining the value of the corrected temperature at an estimated elapsed time of 7 minutes (5 minutes after the brightness change), which is 5 minutes after the estimated elapsed time of 2 minutes, the calculation unit 94 searches for the corrected temperature in the out-of-range corrected temperature table Ta in the order of the up arrow [5] to the left arrow [6] and determines that the corrected temperature is -2.0℃. Then, -2.0℃ becomes the corrected temperature after the change. When the processing in step S318 is completed, the control means 9 moves on to step S322.

[0099] 8) Selection process for the corrected temperature table after modification In step S320, the control means 9, specifically the calculation unit 94, selects the desktop correction temperature table T2 to determine the correction temperature after an additional 7 minutes have elapsed from the estimated elapsed time of 2 minutes. The desktop correction temperature table T2 becomes the modified correction temperature table. After the desktop correction humidity table 21 is selected, the correction temperature remains constant at -1.9°C.

[0100] 9) Process for calculating the corrected temperature after modification When the processing in step S320 is completed, the control means 9 moves on to step S322. In step S322, as an example, when determining the value of the corrected temperature at a point 10 minutes after the light-emitting unit 24 has been emitting light in medium brightness mode (10 minutes after the estimated elapsed time of 2 minutes), the calculation unit 94 searches for the corrected temperature in the tabletop corrected temperature table T2, as shown in Figure 15, in the order of the up arrow [9] to the right arrow

[10] , and determines that the corrected temperature is -1.9℃. Then, -1.9℃ becomes the corrected temperature after the change. Furthermore, the calculation unit 94 uses equation (1) to calculate the corrected temperature in the room as 33.1℃ and displays the corrected temperature of 33.1℃ on the display unit 22 as the accurate temperature in the room.

[0101] 10) Humidity calculation process after correction (after changing brightness mode) Once the processing in step S322 is completed, the control means 9 proceeds to step S324. In step S324, a corrected humidity calculation process is performed. For example, when determining the corrected humidity value 10 minutes after the light-emitting unit 24 has been emitting light in medium brightness mode, as explained earlier, after the point in time when 2 minutes have elapsed beyond the estimated elapsed time of 4 minutes, the control means 9 determines the corrected humidity from the desktop corrected humidity table T21 shown in Figure 16. After selecting the desktop corrected humidity table T21, the corrected humidity becomes constant at 4.2%, so the calculation unit 94 uses formula (2) to calculate the corrected humidity in the room = 79.2%, and displays the corrected humidity of 79.2% as the accurate humidity in the room on the display unit 22.

[0102] In the above-described embodiment, the temperature and humidity correction method of the thermometer 1 and embodiment 3 allows the calculation unit 94 to determine an estimated elapsed time corresponding to the pre-correction temperature based on the out-of-range correction temperature table Ta or the desktop correction temperature table (post-correction temperature table) T2, even when the intensity of light emitted by the light-emitting unit 24 is changed. Based on the information of the estimated elapsed time, it determines the post-correction temperature for the temperature detected by the temperature and humidity sensor 20 shown in the out-of-range correction temperature table Ta or the desktop correction temperature table T2, and further calculates the post-correction temperature in the space when the light-emitting unit 24 emits light at a second light intensity for a predetermined time. This makes it possible to display the accurate temperature of the room on the display unit 22.

[0103] The embodiments described above are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and essence of the invention, as well as in the claims of the invention and its equivalents. [Explanation of Symbols]

[0104] 1: Temperature and humidity sensor (detection device), 3: Input means, 9: Control means, 10: Main unit, 15: Illuminance sensor, 20: Temperature and humidity sensor, 22: Display unit, 24: Light-emitting unit, 31: Power button, 32: LED button, 33: Set button, 36: Select button, 92: Acquisition unit, 93: Recognition unit, 94: Calculation unit, 100: Casing, 241: Red LED chip, 242: Blue LED chip, 243: Green LED chip, 244: Orange LED chip, 245: Yellow LED chip

Claims

1. The device comprises a main body, a sensor disposed in the main body that detects at least temperature, a display unit that displays the temperature detected by the sensor, a light-emitting unit disposed in the main body that indicates temperature-related information by its light emission pattern, and control means for controlling the entire device. The control means is, An acquisition unit that acquires information on the elapsed time during which the light-emitting unit is emitting light, A recognition unit that recognizes the intensity of the light emitted by the light-emitting unit, The acquisition unit indicates a correction temperature for correcting the temperature detected by the sensor based on the elapsed time information acquired by the acquisition unit, and a plurality of correction temperature tables are selected according to the intensity of the light recognized by the recognition unit, A detection device comprising: a calculation unit that calculates a corrected temperature from the corrected temperature determined using the selected corrected temperature table and the temperature detected by the sensor.

2. The aforementioned sensor detects humidity, The display unit displays the humidity detected by the sensor. The light-emitting part indicates information related to humidity by the color it emits. The control means includes a plurality of corrected humidity tables that indicate a corrected humidity for correcting the humidity detected by the sensor based on the elapsed time information acquired by the acquisition unit, and are selected according to the light intensity recognized by the recognition unit. The detection device according to claim 1, wherein the calculation unit calculates the corrected humidity from the corrected humidity determined using the selected corrected humidity table and the humidity detected by the sensor.

3. The control means is used when the light-emitting unit has been changed to emit light at a second light intensity different from the first light intensity after emitting light at a first light intensity for a predetermined time, and includes a modified correction temperature table selected according to the light intensity recognized by the recognition unit. The calculation unit described above, Based on the information obtained by the acquisition unit regarding the elapsed time during which the light-emitting unit emitted light at the first light intensity, the pre-correction temperature for the sensor's detected temperature shown in the correction temperature table is determined, and further, the corrected temperature when the light-emitting unit emitted light at the first light intensity for a predetermined time is calculated. The estimated elapsed time corresponding to the pre-modification correction temperature is determined by searching the modified correction temperature table, The detection device according to claim 2, which determines a corrected temperature for the temperature detected by the sensor shown in the corrected temperature table based on the estimated elapsed time information, and further calculates the corrected temperature when the light-emitting unit emits light at the second light intensity for a predetermined time.

4. The control means includes an out-of-range correction temperature table that is selected when the pre-change correction temperature is a value outside the range of the post-change correction temperature table. The detection device according to claim 3, wherein, if the pre-correction temperature is outside the range of the post-correction temperature table, the calculation unit searches for and determines an estimated elapsed time corresponding to the pre-correction temperature from the out-of-range correction temperature table instead of the post-correction temperature table, and determines the post-correction temperature for the sensor's detected temperature shown in the out-of-range correction temperature table from the information of the estimated elapsed time.

5. The detection device according to claim 4, wherein the calculation unit determines the modified corrected temperature based on the modified corrected temperature table when the corrected temperature shown in the selected out-of-range corrected temperature table falls within the range of the corrected temperature shown in the modified corrected temperature table over time.

6. The control means is used when the light-emitting unit has been changed to emit light at a second light intensity different from the first light intensity after emitting light at a first light intensity for a predetermined time, and includes a modified corrected humidity table selected according to the light intensity recognized by the recognition unit. The detection device according to claim 3, wherein the calculation unit determines the corrected humidity for the temperature detected by the sensor shown in the corrected humidity table based on the estimated elapsed time information, and further calculates the corrected humidity when the light-emitting unit emits light at a second light intensity for a predetermined time.

7. The aforementioned correction temperature table is, The detection device according to any one of claims 1 to 6, comprising a first correction temperature table and a second correction temperature table selected according to the tilt state of the detection device.

8. The aforementioned corrected humidity table is The detection device according to any one of claims 2 to 6, comprising a first corrected humidity table and a second corrected humidity table selected according to the tilt state of the detection device.

9. A method for correcting the detected value in the detection device according to claim 5, A sensor value acquisition step in which the sensor detects at least a temperature value and the control means acquires the temperature value, The acquisition step involves acquiring information on the elapsed time during which the light-emitting unit is emitting light, The recognition unit performs a recognition step in which it recognizes the intensity of the light emitted by the light-emitting unit, The calculation unit performs a correction temperature table selection step, in which it selects a correction temperature table from among a plurality of correction temperature tables for performing temperature correction based on information about the intensity of light emitted by the light-emitting unit, A method for correcting detected values, comprising: a calculation unit searching for and determining a correction temperature value from the selected correction temperature table, and further calculating a corrected temperature from the determined correction temperature and the temperature value detected by the sensor.

10. When the intensity of the light emitted by the light-emitting unit is changed, the correction temperature table selection step includes a pre-change correction temperature table selection step and a post-change correction temperature table selection step, and the post-correction temperature calculation step includes a pre-change post-correction temperature calculation step and a post-change post-correction temperature calculation step. In the pre-correction temperature table selection step, the calculation unit determines the pre-correction temperature for the temperature detected by the sensor shown in the correction temperature table based on the information obtained by the acquisition unit regarding the elapsed time during which the light-emitting unit emitted light at the first light intensity, and further, in the pre-correction temperature calculation step, it calculates the corrected temperature in the space when the light-emitting unit emitted light at the first light intensity for a predetermined time. The method for correcting a detected value according to claim 9, wherein the calculation unit, in the modified corrected temperature table selection step, determines an estimated elapsed time corresponding to the pre-modified corrected temperature retrieved from the modified corrected temperature table, and further, in the modified corrected temperature calculation step, determines a modified corrected temperature for the sensor's detected temperature shown in the modified corrected temperature table based on the information of the estimated elapsed time, and further calculates the corrected temperature in the space when the light-emitting unit emits light at a second light intensity for a predetermined time.

11. The calculation unit includes an out-of-range correction temperature table selection step, in which, if the pre-change correction temperature is outside the range of the post-change correction temperature table, it selects the out-of-range correction temperature table instead of the post-change correction temperature table. The method for correcting a detected value according to claim 10, wherein in the step of selecting an out-of-range correction temperature table, the estimated elapsed time corresponding to the pre-change correction temperature is searched for and determined from the out-of-range correction temperature table.

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