CN205126206U - Body temperature measuring device - Google Patents
Body temperature measuring device Download PDFInfo
- Publication number
- CN205126206U CN205126206U CN201420827401.XU CN201420827401U CN205126206U CN 205126206 U CN205126206 U CN 205126206U CN 201420827401 U CN201420827401 U CN 201420827401U CN 205126206 U CN205126206 U CN 205126206U
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- resistance
- temperature sensor
- contact site
- body temperature
- critesistor
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- Measuring And Recording Apparatus For Diagnosis (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a body temperature measuring device, including detection circuitry, casing, a temperature sensor, the 2nd temperature sensor and temperature measurement contact site, detection circuitry sets up in the casing, the casing be provided with bellied temperature measurement contact site on the surface, a temperature sensor set up in the top of temperature measurement contact site, the 2nd temperature sensor set up in the basal portion of temperature measurement contact site, a temperature sensor, the 2nd temperature sensor are connected to detection circuitry respectively. The utility model discloses a set up two temperature sensor, utilize two temperature sensor's temperature difference to come the measure the temperature meter whether to reach thermal balance, come the accurate body temperature numerical value of output as early as possible.
Description
Technical field
This utility model relate to a kind of can the body temperature measuring device of reliable take temperature rapidly, belong to the technical field of measurement of bldy temperature apparatus.
Background technology
Body temperature is all the important indication of medical diagnosis all the time, therefore at medical instruments field, has a large amount of body temperature measuring devices products.Traditional mercurial thermometer performance is comparatively reliable, but required Measuring Time is very long, patient needs the measurement carrying out more than five minutes just can to record in body body temperature numerical value accurately usually, and temperature needs the thermometer body through glass to amplify just can accurately read, and ease for use is not good.Nearest pandemic electronic thermometer, usually adopts the bridge circuit of critesistor composition to carry out the body temperature of indirect inspection patient to the electric potential difference that the change of resistance after being heated by critesistor brings bridge balance to change.Its convenient degree and ease for use are greatly improved relative to traditional mercurial thermometer.But electronic thermometer sets up thermal balance from entering human body thermometric position to thermometric position, still needs the time that one longer.Existing electronic thermometer is in order to avoid just having read inaccurate result when electronic thermometer is not yet identical with body temperature temperature, usually a timer is independently set again in addition, carry out after some seconds after temperature data starts to increase buzzing remind patient temperature meter with human body sufficient heat exchange, current body temperature value has been body temperature value accurately.But this kind of electronic thermometer adopts the fixing thermometric time, the very first time that can not record accurate body temperature value at thermometer just prompting patient read body temperature, still simple and efficient not.
Although existing infra-red thermometer is comparatively convenient, measuring speed is also very fast, and it is large that infra-red thermometer existence is subject to ambient temperature effect, is easily subject to the infrared ray interference in other source extraneous, brings the inaccurate problem of temperature-measuring results.
Summary of the invention
Goal of the invention: the purpose of this utility model is to provide a kind of body temperature measuring device that can read accurate body temperature value sooner.
Technical scheme: body temperature measuring device of the present utility model, testing circuit, housing, first temperature sensor, second temperature sensor, thermometric contact site and signal comparison means, described testing circuit is arranged in housing, the surface of described housing is provided with protruding thermometric contact site, described first temperature sensor is arranged at the top of described thermometric contact site, described second temperature sensor is arranged at the base portion of described thermometric contact site, described first temperature sensor, second temperature sensor is connected to testing circuit respectively, described testing circuit is provided with the signal comparison means comparing the first temperature sensor output signal and the second temperature sensor output signal.
Further, described thermometric contact site is polyurethane foam thermometric contact site.Utilize the flexibility of polyurethane foam, the gap of thermometric place (such as auditory meatus) blocked, avoids the cross-ventilation at thermometric place, allow and in human body, conduct the heat major part can conduct to sensor,
Further, the shape that thermometric contact site and body temperature gather position cooperatively interacts.Further minimizing gap, avoids cross-ventilation.
Further, body temperature gathers position is auditory meatus, oral cavity or rectum.
Further, described testing circuit comprises power supply, resistance R1, resistance R2, resistance R3, resistance R4, operational amplifier IC1, it is light emitting diode D1 that described output signal compares device, described first temperature sensor is critesistor Rt1, described second temperature sensor is critesistor Rt2, the resistance R1 of described series connection and critesistor Rt1, the resistance R2 of series connection and critesistor Rt2, the resistance R3 of series connection and resistance R4 is together connected to the two ends of described power supply after parallel connection, described operational amplifier IC1 two input one input is connected between the resistance R1 of series connection and critesistor Rt1, another input is connected between the resistance R3 of series connection and resistance R4, one end of described light emitting diode D1 is connected between the resistance R1 of series connection and critesistor Rt1, the other end is connected between the resistance R2 of series connection and critesistor Rt2.Namely the analog voltage that the outfan of such operational amplifier exports characterizes the body temperature now recorded, can as analog signal output.
Further, also comprise single-chip microcomputer and digital display module U1, described single-chip microcomputer receives the signal that operational amplifier IC1 sends, and is sent to described digital display module U1 after the digital display signal of the signal corresponding temperature value that operational amplifier IC1 sends by described single-chip microcomputer.Store analog signal values and the corresponding table of the corresponding data obtained after once demarcating of temperature value in single-chip microcomputer, obtain corresponding digital display value by tabling look-up to analogue signal input value, and be converted into digital display Signal aspects on digital display module U1.
Compared with prior art, its beneficial effect is this utility model: this utility model, by arranging two temperature sensors, utilizes the temperature difference of two temperature sensors to carry out measuring tempeature meter and whether arrives thermal balance, export body temperature numerical value accurately as early as possible.
Accompanying drawing explanation
Fig. 1 is body temperature measuring device perspective view described in the utility model;
Fig. 2 is temperature collecting device schematic cross-section described in the utility model;
Fig. 3 is temperature collecting device electrical block diagram described in the utility model.
Detailed description of the invention
Below technical solutions of the utility model are described in detail, but protection domain of the present utility model is not limited to described embodiment.
Embodiment 1:
As shown in Figure 1, for the body temperature measuring device perspective view of the present embodiment, the upper surface of housing 2 is provided with thermometric contact site 5 protruding upward, this thermometric contact site is made up of the polyurethane foam of flexibility, the lower surface heart wherein that is connected with housing has a passage, wire is introduced on the testing circuit 1 in housing for the first temperature sensor 3 being arranged on thermometric contact site 5 top, the lead-in wire being also provided with the second temperature sensor 4, second temperature sensor 4 at the base portion of thermometric contact site 5 is introduced on testing circuit 1 through housing equally.Setting like this, when deployed, by this thermometric contact site 5 and measured's thermometric position, as skin surface, auditory meatus or oral cavity, anus contact with each other, because the first temperature sensor 3 is more deep, therefore faster and measured are produced thermal balance, reach body temperature numerical value, and the second temperature sensor too can with measured's heat balance, reach the body temperature temperature of measured.Therefore, the first temperature sensor 3 heats up faster, and be then warming up to body temperature, the second temperature sensor 4 heats up relatively slow, but is also warming up to body temperature.The temperature difference of the first temperature sensor and the second temperature sensor then from large to small, until temperature difference is down to almost nil, now can judge, first temperature sensor and the second temperature sensor all reach thermal balance with measured's body temperature, recorded body temperature accurately, and the temperature value that now the first temperature sensor records is body temperature value accurately.
As shown in Figure 2, testing circuit 1 is arranged in housing 2, is provided with the 89C205 type single-chip microcomputer with analog input end.
Fig. 3 is the circuit diagram of this testing circuit 1 and 89C205 type single-chip microcomputer, as shown in the figure, first sensor 3 is critesistor Rt1, the second temperature sensor 4 is critesistor Rt2, critesistor Rt1 connects with resistance R1, critesistor Rt2 connects with resistance R2, resistance R3 and R4 connects, power supply V1 is connected to after three series arm parallel connections, then (around IC1, accessory circuit and power supply circuits are not shown in figure 3, adopt common amplifying circuit to arrange as amplifier to utilize operational amplifier IC1.), two inputs connect the node between node between R3 and R4, R1 and Rt1 respectively, are carried out the temperature at indirect inspection critesistor Rt1 place by the bridge circuit that forms like this by the voltage difference of amplifier two input.The resistance of R1, R2, R3, R4 is 1000 ohm, and critesistor Rt1 and Rt2 is the critesistor of same model, and its resistance is at room temperature also 1000 ohm.Same, R2 and the Rt2 of series connection, form a bridge circuit equally between R1 and the Rt1 of series connection and diode D1, whether identical by the resistance that shows Rt1 and Rt2 of flickering of diode D1, namely whether the temperature located of Rt1 and Rt2 is identical.When diode extinguishes, namely represent and now read body temperature value accurately.The amplifier out that the analog input end of single-chip microcomputer 6 and IC1 are formed is interconnected, and demarcate by being positioned over the magnitude of voltage that amplifier exports under different temperatures to this system, the several tables demarcating output valve and the critesistor place temperature obtained are stored in single-chip microcomputer 6, obtain real-time output valve by look-up table and think corresponding temperature value, and be converted to digital display signal and be sent to digital display module U1 place.
As mentioned above, although represented with reference to specific preferred embodiment and described this utility model, it shall not be construed as the restriction to this utility model self.Under the spirit and scope prerequisite of the present utility model not departing from claims definition, various change can be made in the form and details to it.
Claims (6)
1. a body temperature measuring device, comprise testing circuit (1), housing (2), first temperature sensor (3), second temperature sensor (4), thermometric contact site (5) and signal comparison means, described testing circuit (1) is arranged in housing (2), the surface of described housing (2) is provided with protruding thermometric contact site (5), described first temperature sensor (3) is arranged at the top of described thermometric contact site (5), described second temperature sensor (4) is arranged at the base portion of described thermometric contact site (5), described first temperature sensor (3), second temperature sensor (4) is connected to testing circuit respectively, described testing circuit is provided with the signal comparison means comparing the first temperature sensor (3) output signal and output signal with the second temperature sensor (4).
2. body temperature measuring device according to claim 1, is characterized in that, described thermometric contact site (5) is polyurethane foam thermometric contact site (5).
3. body temperature measuring device according to claim 1 and 2, is characterized in that, the shape that described thermometric contact site (5) and body temperature gather position cooperatively interacts.
4. body temperature measuring device according to claim 3, is characterized in that, it is auditory meatus, oral cavity or rectum that described body temperature gathers position.
5. body temperature measuring device according to claim 1 and 2, it is characterized in that, described testing circuit comprises power supply, resistance R1, resistance R2, resistance R3, resistance R4, operational amplifier IC1, it is light emitting diode D1 that described output signal compares device, described first temperature sensor is critesistor Rt1, described second temperature sensor is critesistor Rt2, the resistance R1 of described series connection and critesistor Rt1, the resistance R2 of series connection and critesistor Rt2, the resistance R3 of series connection and resistance R4 is together connected to the two ends of described power supply after parallel connection, described operational amplifier IC1 two input one input is connected between the resistance R1 of series connection and critesistor Rt1, another input is connected between the resistance R3 of series connection and resistance R4, one end of described light emitting diode D1 is connected between the resistance R1 of series connection and critesistor Rt1, the other end is connected between the resistance R2 of series connection and critesistor Rt2.
6. body temperature measuring device according to claim 5, characterized by further comprising single-chip microcomputer (6) and digital display module U1, described single-chip microcomputer receives the signal that operational amplifier IC1 sends, and is sent to described digital display module U1 after the digital display signal of the signal corresponding temperature value that operational amplifier IC1 sends by described single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420827401.XU CN205126206U (en) | 2014-12-23 | 2014-12-23 | Body temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420827401.XU CN205126206U (en) | 2014-12-23 | 2014-12-23 | Body temperature measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205126206U true CN205126206U (en) | 2016-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420827401.XU Expired - Fee Related CN205126206U (en) | 2014-12-23 | 2014-12-23 | Body temperature measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205126206U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104523243A (en) * | 2014-12-23 | 2015-04-22 | 金陵科技学院 | Body temperature acquisition device |
-
2014
- 2014-12-23 CN CN201420827401.XU patent/CN205126206U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104523243A (en) * | 2014-12-23 | 2015-04-22 | 金陵科技学院 | Body temperature acquisition device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20171223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |