CN202158908U - Multi-media thermometer based on sound card - Google Patents
Multi-media thermometer based on sound card Download PDFInfo
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- CN202158908U CN202158908U CN2011201032209U CN201120103220U CN202158908U CN 202158908 U CN202158908 U CN 202158908U CN 2011201032209 U CN2011201032209 U CN 2011201032209U CN 201120103220 U CN201120103220 U CN 201120103220U CN 202158908 U CN202158908 U CN 202158908U
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- sound card
- temperature
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Abstract
The utility model discloses a multi-media thermometer based on a sound card, which relates to a medical instrument. In the design, the basic structure that a multi-media computer is taken as an instrument measuring core is designed successfully, a virtual instrument technique is combined with a temperature frequency conversion circuit, and a sound card is adopted as a data collecting card, so that body temperature can be measured fast, and the measured temperature valves are displayed in various modes; and simultaneously the sound card has a memory function, thus storing the measured valves for long time; and a curved line that the body temperature changes along with time can be drawn automatically. The multi-media thermometer mainly comprises the multi-media computer and a temperature collecting module, has the advantages of wide application range, simple operation, low cost and convenient use, is particularly suitable for being used in families and hospitals with multi-media computers, and is easy to apply and promote.
Description
Technical field:
The utility model relates to a kind of Medical Instruments, specifically, relates to a kind of with the virtual instrument of multimedia sound card as the measurement human body temperature of data collecting card.
Background technology:
Whether normally body temperature be observation function of human body one of important indicator, also is human life activity's essential characteristic.The monitoring that body temperature changes helps the diagnostic assessment to conditions of patients, and in clinical monitoring and treatment, medical personnel usually will pay close attention to some particular patients ' (for example to critically ill patient or infant's) the time dependent situation of body temperature.In the daily life, mercury clinical thermometer commonly used or electronic thermometer are measured body temperature.Though reach certain technical merit, can satisfy clinical requirement basically, also come with some shortcomings and be short of.These shortcomings are listed below at present:
1. when mercury clinical thermometer was measured, the stand-by period was longer, and reading is inaccurate, and causes mercury pollution after the fragmentation easily.
2. though electronic thermometer can overcome above-mentioned inconvenience.But memory function is limited, can't accomplish the record that the body temperature time changes automatically.
3. computer clinical thermometer, many Usage data collections card is accomplished analog to digital conversion, because complicated circuit, cost is higher, seldom in clinical and family, uses.
Summary of the invention:
In order to overcome the defective and the deficiency of existing clinical thermometer, the purpose of the utility model provides a kind of virtual instrument that utilizes the multimedia computer sound card as the measurement human body temperature of data collecting card.This utility model not only can be carried out measurement of bldy temperature fast, and the body temperature value of being surveyed is shown in a variety of forms; Have memory function simultaneously, can be with the measured value long preservation; And can draw the time dependent curve of body temperature automatically, bring a lot of convenience for medical personnel and patient.Because the sound card that adopts multimedia computer can be applied on all kinds of multimedia computers as data collecting card very easily.So just guaranteed that the utility model can be convenient to hospital, family uses, reached the goal of the invention that improves medical efficiency and quality.
For achieving the above object; The design concept of the utility model is: combine multimedia computer with the electron temperature detection technique; The sound card that utilizes multimedia computer is as data collecting card, the temperature signal that temperature sensor is gathered after processing of circuit, the temperature signal of temperature collect module output; Be input to computing machine through sound card, handle by the virtual instrument that obtains with the LabVIEW software programming in the computing machine again.Just can show, store the temperature signal of being surveyed automatically.The take temperature value quoted in voice also capable of using in case of necessity.
The utility model mainly is made up of multimedia computer and temperature collect module.Because sound card can only input audio signal (20Hz-20kHz), the temperature signal that slowly changes can't directly enter into multimedia computer through sound card.Need modulate the temperature signal that temperature sensor collects for this reason, make its frequency move on to audiorange, get into multimedia computer through sound card again.The temperature collect module of the utility model is achieved in that the temperature frequency translation circuit of being made up of thermistor, electric capacity and 555 timing circuits; Circuit is required+and the 5V supply voltage provides by computing machine UBS interface, utilizes multimedia sound card as data collecting card; The temperature signal of temperature collect module output is input to computing machine by the circuit input interface (3) of sound card.
Owing to adopted above-mentioned design concept, the utlity model has applied range, characteristics simple to operate, cheap, easy to use, the family that is particularly suitable for having multimedia computer uses with hospital, very easily uses and popularization.
Description of drawings:
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain.
Accompanying drawing is the electrical schematic diagram of an embodiment of the utility model; 1. multimedia computers, 2. computing machine UBS interfaces, 3. sound card circuit input interfaces 4. have 555 timers of eight pin in the accompanying drawing.
Embodiment
Sound card is the basic configuration of present multimedia computer.It is mainly by A/D, and several parts such as D/A converter, DSP audio process, computer bus and I/O interface are formed.The main application of sound card is a processing audio signal, at its input end sound filter is arranged all, and its signal collected frequency range is 20Hz-20KHz.Sound card generally has three interfaces at least: microphone input (Mic), circuit input (Line in) (3) and loudspeaker output (Speakout).Wherein the difference of Mic and Line in (3) mouth is that the Mic input is fit to be connected common passive microphone, will pass through biasing circuit after the input; And Line in is fit to active voltage signal input.So sound card is an extraordinary audio signal sample card.Its cost is low, performance is excellent, compatible, highly versatile, dirigibility are good, and especially its software, driver upgrade are convenient.
In electric principle shown in the drawings, the embodiment of the utility model is achieved in that it mainly is made up of multimedia computer (1) and temperature collect module.
Multimedia computer (1) comprises display, main frame, keyboard, mouse, UBS interface (2), sound card circuit input interface (3).
Temperature collect module: be by the pin 8 of 555 timers (4) (+Vcc) with pin 4 (
) be connected resistance R with the positive pole of+5V power supply
1Be connected between pin 8 and the pin 7 (DIS) thermistor R
TBe connected on pin 7 (DIS) and pin 2 (
) between, pin 2 also is in the same place with pin 6 (TH); Capacitor C
1Be connected between pin 2 and the pin 1 (GND), pin 1 (GND) ground connection, pin 5 (VC) is through a little capacity earth, and pin 3 (F) is an output terminal.
Temperature collect module be in fact one by R
1, R
T, C
1Multivibrator with 555 timers (4) formation; Oscillator signal cycle T=0.7 (the R of its pin 3 outputs
1+ 2R
T) C
1Resistance R when thermistor
TWhen changing with temperature variation, the cycle T of signal can change thereupon, and T is the function of temperature; The frequency of signal (f=1/T) also can with the change of temperature change, this circuit can be used as the temperature frequency translation circuit.Because the frequency displacement of this signal is within audiorange, so this temperature signal can get into multimedia computer through sound card.The program that computing machine can utilize LabVIEW to compile through the cycle of measuring-signal, thereby is measured the temperature variation around the thermistor.
In the circuit+the 5V supply voltage, provide by the UBS interface; R
2, R
3, D
1, D
2Form the decay holding circuit, make the signal amplitude that is input to sound card circuit input interface (3) less than 1V; When the voltage of input sound card surpasses 1V, D
1, D
2Two limiter diodes shield.
Operator (doctor or patient) receives the attaching plug (UBS plug) of temperature collect module on the UBS interface of computing machine; Circuit input (Line in) mouth of sound card is received in the output of temperature collect module; Make multimedia computer get into the thermometer modular program through keyboard or mouse; Probe (thermistor) is put into the oxter, can carry out the detection of body temperature.Body temperature after the detection can deposit in the file of prior setting automatically, and can generate chart automatically.
Claims (2)
1. the multimedia thermometer based on sound card mainly is made up of multimedia computer and temperature collect module, and it is characterized in that: temperature collect module is by thermistor, the temperature frequency translation circuit that electric capacity and 555 timing circuits are formed; Circuit is required+and the 5V supply voltage provides by computing machine UBS interface; Utilize multimedia sound card as data collecting card; The temperature signal of temperature collect module output is input to computing machine by the circuit input interface (3) of sound card.
2. the multimedia thermometer based on sound card according to claim 1 is characterized in that 555 timers of temperature collect module, and pin 8 is connected resistance R with pin 4 with the positive pole of power supply
1Be connected between pin 8 and the pin 7 thermistor R
TBe connected between pin 7 and the pin 2, pin 2 also is in the same place with pin 6; Capacitor C 1 is connected between pin 2 and the pin 1, pin 1 ground connection, and pin 5 is through a little capacity earth, and pin 3 is an output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201032209U CN202158908U (en) | 2011-04-02 | 2011-04-02 | Multi-media thermometer based on sound card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201032209U CN202158908U (en) | 2011-04-02 | 2011-04-02 | Multi-media thermometer based on sound card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202158908U true CN202158908U (en) | 2012-03-07 |
Family
ID=45766542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201032209U Expired - Fee Related CN202158908U (en) | 2011-04-02 | 2011-04-02 | Multi-media thermometer based on sound card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202158908U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398796A (en) * | 2013-08-15 | 2013-11-20 | 山东共达电声股份有限公司 | Electronic thermometer and electronic device |
| CN105784178A (en) * | 2016-03-09 | 2016-07-20 | 上海米开医疗科技有限公司 | Thermometer, temperature detecting unit, temperature detecting device and temperature detecting system |
-
2011
- 2011-04-02 CN CN2011201032209U patent/CN202158908U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398796A (en) * | 2013-08-15 | 2013-11-20 | 山东共达电声股份有限公司 | Electronic thermometer and electronic device |
| CN105784178A (en) * | 2016-03-09 | 2016-07-20 | 上海米开医疗科技有限公司 | Thermometer, temperature detecting unit, temperature detecting device and temperature detecting system |
| CN105784178B (en) * | 2016-03-09 | 2018-03-27 | 上海米开医疗科技有限公司 | Thermometer, temperature detecting unit, temperature-detecting device and system for detecting temperature |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20140402 |