JPS6177731A - Electronic thermometer - Google Patents

Abstract

PURPOSE:To make it possible to perform highly accurate measurement when a temperature sensitive part is replaced, by providing a memory, which stores temperature correcting numbers of a temperature sensitive element in accordance with ranks, in a main part, and correcting the detected temperature by the temperature correcting number for the rank selected by a switch. CONSTITUTION:A temperature sensitive part 1, in which a temperature sensitive element 5 is surrounded by a pair of insulating films 3 and 4 that are formed in a strip shape, is fixed to a main body 2 of a clinical thermometer by a grip 11. To the temperature sensitive part 1, a display 1a corresponding to the temperature characteristic of the rank inherent to the element 6 is attached. The rank is displayed in number. The main body 2 comprises a main body case 10 and the grip 11, which is attached to the tip of the case 10. In this case 10, a digital temperature display device 8, a power source switch 9a and a temperature- characteristic-rank selecting switch 9b, which is switched in correspondence with the temperature characteristic rank of the connected temperature sensitive part, are provided. The temperature sensitive part 1 is held by the main body 2. The switch 9b is selected based on the temperature-characteristic-rank display 1a of the element 5, which is provided in the temperature sensitive part 1. The selected signal is stored in a memory 16. A CPU15 corrects and computes the detected temperature data. The result is displayed on a display part 17.

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to an electronic thermometer, in particular an electronic thermometer that corrects the measured temperature according to the temperature characteristics of a temperature sensing element in a separable temperature sensing section. Regarding the electronic hygrometer.

(Prior Art and its Problems) Conventionally, there is an electronic thermometer in which a temperature sensing section having a temperature sensing element and a measurement processing section that measures temperature based on a signal from the humidity sensing element can be separated. This electronic thermometer requires 1118 mm in order to make the temperature sensing part replaceable. There, in order to guarantee accuracy, a correction circuit is provided in each of the temperature sensing section and the measurement processing section. In addition, due to recent advances in electronic technology, this thermosensor can be manufactured at a low cost, and if the 17I does not require a correction circuit, it can be disposable (for example, it can be used in hospitals that perform large flute temperature measurement processes). It has even become a cost (which can be thrown away).

However, since the electronic hygrometer has a correction circuit in each of the temperature sensing part and the measurement processing part, each circuit of the detection circuit becomes complicated, resulting in a high price. Was.

(Object of the Invention) The present invention was made in view of the above problems, and its purpose is to correct the temperature measured by the measurement processing section in accordance with the patent for the temperature sensing element of the temperature sensing section. ! To provide a compatible electronic thermometer that can perform highly accurate measurements when replacing the temperature sensing part.

(Structure and Effects of the Invention) In order to achieve the above object, the present invention provides an electronic thermometer in which a temperature sensing part having a temperature sensing element and a main body part are separable, wherein the temperature sensing part has a @ temperature element. The body part has a part for displaying temperature correction coefficients by rank, and the main body part includes a memory for storing temperature correction coefficients of the temperature sensing element by rank, a switch for selecting the rank of the temperature correction coefficient, and a temperature sensor. ii of the rank selected by the switch.
! The present invention is characterized in that it has an arithmetic processing unit that performs calculation and correction.

According to the present invention, the temperature detected by the connected temperature-sensing element is corrected for each rank by selecting a switch, thereby realizing an electronic thermometer that is compatible and capable of highly accurate measurement when replacing the temperature-sensing part. It becomes possible to do so.

(Example of the invention) The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an electronic thermometer according to an embodiment of the present invention.
2 is a thermometer body showing a temperature-sensing part, and 2 a connecting base of the temperature-sensing part 1.

The temperature sensing portion 1 includes a pair of insulating coatings 3.
A temperature sensing element 5 such as a thermistor is surrounded at the tip between 4,
Its periphery is sealed.

One end of each of the inner surfaces of the coatings 3 and 4 is provided with the temperature sensing element 5.
A pair of conductive patterns 6.7 are formed which are electrically connected to each other. Each conductive pattern 6.7 is fixed to a connector (not shown) of the main body 2 with a clip 11. Incidentally, in order to remove the temperature sensing part 1 from the fixed state shown in FIG. 1, by pushing the lever 11a provided at the rear end of the clip 11, the tip opens and the temperature sensing part 1 can be easily removed.

As shown in FIG. 2(a), the temperature sensing section 1 is further provided with a numerical display 1a corresponding to the temperature characteristic of the specific rank of the temperature sensing element 5.

The thermometer main body 2 includes a main body case 10 provided with a digital temperature display 8, a power switch 9a, and a temperature characteristic rank selection switch 9b that is switched according to the temperature characteristic rank of the connected temperature sensing section, and a main body case 10 provided at the tip of the main body case 10. clip 1
Consists of 1.

Figure 4 is a block diagram of the electrical system in Figure 1.
, a power switch 9a, a circuit 12 that detects the signal from the temperature sensing section 1 as an analog signal, and an A/D converter 13 that converts the analog signal from the detection circuit 12 into a digital signal.
, a temperature characteristic rank selection switch 9b, a switch reading circuit 14 that outputs the rank selected by the once characteristic rank selection switch 9b as a digital signal, and an arithmetic processing section (
CPU) 15, memory 16 in which correction coefficients according to the temperature characteristic rank of the temperature sensing section are stored, digital temperature display 1
It consists of 7.

Next, the operation of the electronic thermometer of the present invention will be explained. First, the temperature sensing section 1 is held between the electronic thermometer main body 2 by the clip 11. At this time, the temperature characteristic rank selection switch 9b of the main body 2 is selected based on the body temperature characteristic rank display 1a of the temperature sensing element 5 provided in the temperature sensing section 1. Therefore, the switch reading circuit 14 outputs a signal according to the selected temperature characteristic rank, and reads out the correction value stored in the memory 16.

On the other hand, the signal from the temperature sensor 1 is 7 Zorog, and this signal is converted into digital No. 18 data by the A/D converter 13 and input to the CPU 15.

In this way, the CPU 15 corrects the temperature data detected by the temperature sensing section 1 using the correction count in the memory 16, and then
The corrected temperature is displayed on the display section 17.

In other words, if a thermosensor, for example, is used as a temperature sensing element, the base Q of its resistance - temperature - low resistance value force (temperature characteristics)
The deviation from the can is taken as the correction count.

Therefore, the thermometer detects an accurate temperature after correcting the deviation according to the detected temperature.

In the embodiment described above, the temperature count rank display 1a is displayed with one number, but a mark may be attached to the corresponding rank number as shown in 1b of FIG. 2(B). Furthermore, as shown in 1C of FIG. 3(A), the information may be displayed in different colors. In this case, it is convenient to display the temperature characteristic rank selection switch 9b in different colors (FIG. 3(B)).

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an electronic K iQ if according to an embodiment of the present invention, FIG.
Figure (b) is a plan view showing a modification of Figure 2 (a), Figure 3 (a) is a plan view showing a modification of Figures 2 (a) and (b), and Figure 3 (b) is a plan view showing a modification of Figure 2 (a). FIG. 3(a) is a plan view of the temperature characteristic rank selection switch in the case of (a), and FIG. 4 is a block diagram of the electrical system of the electronic thermometer. DESCRIPTION OF SYMBOLS 1... Temperature sensing part, 1a, lb, 1c... Humidity correction count rank display part, 2... Thermometer body, 5... Temperature sensing element, 9b... Temperature correction count rank selection switch, 15・
... Arithmetic processing unit (CPU), 16... Memory. Patent applicant: Tateishi Dentan Co., Ltd. Agent: Patent attorney: Tetsuji Iwakura (and one other person) Figure 1b Figure 3

Claims (1)

[Claims] An electronic thermometer in which a temperature-sensing part having a temperature-sensing element and a main body part are separable, the temperature-sensing part having a part that displays temperature correction coefficients of the temperature-sensing element by rank, and the main body part: a memory for storing temperature correction coefficients of the temperature sensing element by rank; and a switch for selecting the rank of the temperature correction coefficient;
An electronic thermometer comprising: an arithmetic processing section that corrects the temperature detected by the temperature sensing element using a temperature correction coefficient of the rank selected by the switch.