CN105816159A - Remote sensing temperature device for internet of things - Google Patents
Remote sensing temperature device for internet of things Download PDFInfo
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- CN105816159A CN105816159A CN201610307067.9A CN201610307067A CN105816159A CN 105816159 A CN105816159 A CN 105816159A CN 201610307067 A CN201610307067 A CN 201610307067A CN 105816159 A CN105816159 A CN 105816159A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
- A61B5/0004—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by the type of physiological signal transmitted
- A61B5/0008—Temperature signals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
- A61B5/0015—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by features of the telemetry system
- A61B5/0022—Monitoring a patient using a global network, e.g. telephone networks, internet
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- Heart & Thoracic Surgery (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses a remote sensing temperature device for the internet of things. The remote sensing temperature device comprises a strip-type winding tape, a temperature sensor, a master controller, a network transmission circuit, a filtering and amplifying circuit, an A/D conversion circuit, a display, a repeater and a host computer, wherein the temperature sensor is connected to the filtering and amplifying circuit; the filtering and amplifying circuit is connected with the A/D conversion circuit and is connected with the master controller; the display is connected with the master controller and displays a digital signal received by the master controller on the display; the master controller is connected with a wireless transmission module through the network transmission circuit; the wireless transmission module is connected with the host computer through the repeater; the master controller uploads the digital signal to the wireless transmission module through the network transmission circuit; and the wireless transmission module is in communication connection with the host computer through the repeater.
Description
Technical field
The present invention relates to temperature measuring equipment technical field, relate in particular to a kind of Internet of Things remote measurement body temperature device.
Background technology
Body temperature is a critically important index of health, hyperpyrexia or too low be all healthy abnormal signal.Traditional test body temperature method is to measure body temperature with mercury clinical thermometer, and mercury clinical thermometer certainty of measurement is high, it is simple to carry, convenient, has brought great convenience.
But on the other hand, the use operational approach of mercury clinical thermometer is complicated, a lot of user can cause measurement data distortion because of using, and the response time of mercury clinical thermometer is long, when surveying body temperature to child, when the child in particularly people 1-5 year measures body temperature, using inconvenient especially, another is typically made up of glass by mercury clinical thermometer, built-in hydrargyrum, after mercury clinical thermometer once crushes, broken glass and the hydrargyrum of loss all can cause the severe contamination of environment.
Summary of the invention
Present invention aims to the defect of above-mentioned prior art, a kind of Internet of Things remote measurement body temperature device is provided, utilize technology of Internet of things, be developed based on monolithic processor controlled electronic clinical thermometer, overcome prior art response time length, be likely to result in the defect of environmental pollution.
To achieve these goals, the technical scheme is that
A kind of Internet of Things remote measurement body temperature device, including winding band and the temperature sensor being arranged in winding band, master controller, network transmission circuit, filter amplification circuit, A/D change-over circuit, display, repeater, the host computer of bar shaped；Described temperature sensor connects filter amplification circuit, described filter amplification circuit is connected A/D change-over circuit and is connected with master controller by A/D change-over circuit, described temperature sensor gathers the temperature data of human body and generates analogue signal, filter amplification circuit sends A/D change-over circuit to after analogue signal is amplified and filtered, it is that digital signal is uploaded to master controller that the temperature analog signal of this filter and amplification is carried out digital-to-analogue conversion by described A/D change-over circuit, described display is connected with master controller, the digital signal received by master controller shows over the display；Described master controller is connected with wireless transport module by network transmission circuit, described wireless transport module is connected with host computer by repeater, digital signal is uploaded to wireless transport module through network transmission circuit by described master controller, the repeated device of wireless transport module be connected with host computer radio communication.
As the improvement to technique scheme, described Internet of Things remote measurement body temperature device also includes that warning circuit, alarm, described single-chip microcomputer are connected with alarm by warning circuit.When temperature sensor measurement exceedes master controller predetermined value, alarm sends alarm signal.
As the improvement to technique scheme, described Internet of Things remote measurement body temperature device also includes panel and the key circuit being provided with input button, and described key circuit is connected with master controller.
As the improvement to technique scheme, described temperature sensor is DS1920 temperature sensor.
As the improvement to technique scheme, described master controller is AT96C53 single-chip microcomputer.
As the improvement to technique scheme, described display is LCD liquid crystal display.
Compared with prior art, the present invention has the advantage that with good effect and is:
The Internet of Things remote measurement body temperature device of the present invention, be responsible for collection and the analog digital conversion of temperature by temperature sensor DS1920, the temperature collected is passed through conversion by single-chip microcomputer, finally demonstrates temperature value on LCD, when tested skin temperature is higher than predetermined temperature, buzzing alarming sound can be sent.And realize long-haul telemetry device parameter, real time inspection are set.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the overall structure schematic diagram of the present invention；
Fig. 2 is the electrical connection block diagram of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
As illustrated in fig. 1 and 2, the Internet of Things remote measurement body temperature device of the present invention, including winding band and the temperature sensor being arranged in winding band, master controller, network transmission circuit, filter amplification circuit, A/D change-over circuit, display, repeater, the host computer of bar shaped；Described temperature sensor connects filter amplification circuit, described filter amplification circuit is connected A/D change-over circuit and is connected with master controller by A/D change-over circuit, described temperature sensor gathers the temperature data of human body and generates analogue signal, filter amplification circuit sends A/D change-over circuit to after analogue signal is amplified and filtered, it is that digital signal is uploaded to master controller that the temperature analog signal of this filter and amplification is carried out digital-to-analogue conversion by described A/D change-over circuit, described display is connected with master controller, the digital signal received by master controller shows over the display；Described master controller is connected with wireless transport module by network transmission circuit, described wireless transport module is connected with host computer by repeater, digital signal is uploaded to wireless transport module through network transmission circuit by described master controller, the repeated device of wireless transport module be connected with host computer radio communication.
As the improvement to technique scheme, described Internet of Things remote measurement body temperature device also includes that warning circuit, alarm, described single-chip microcomputer are connected with alarm by warning circuit.When temperature sensor measurement exceedes master controller predetermined value, alarm sends alarm signal.
As the improvement to technique scheme, described Internet of Things remote measurement body temperature device also includes panel and the key circuit being provided with input button, and described key circuit is connected with master controller.
As the improvement to technique scheme, described temperature sensor is DS1920 temperature sensor.
As the improvement to technique scheme, described master controller is AT96C53 single-chip microcomputer.
As the improvement to technique scheme, described display is LCD liquid crystal display.
The Internet of Things remote measurement body temperature device of the present invention, be responsible for collection and the analog digital conversion of temperature by temperature sensor DS1920, the temperature collected is passed through conversion by single-chip microcomputer, finally demonstrates temperature value on LCD, when tested skin temperature is higher than predetermined temperature, buzzing alarming sound can be sent.And realize long-haul telemetry device parameter, real time inspection are set.
1, AT96C53 chip
The master controller that the design is used is AT96C53, and it is produced by atmel corp, uses non-volatile, high density technology so that its performance is sufficiently stable in production process.AT96C53 is 8 single-chip microcomputers, has the feature of high-performance, low-voltage.Sheet be contained within the RAM (random access data storage) and 8KB of 256 bytes can be the most erasable FLASHROM (read-only program memory), the most erasable 1000 times.AT96C53 compatibility MCS-51 instruction system, is therefore a good entry level learning tool for single-chip microcomputer abecedarian.AT96C53 is the enhancement mode of AT89C51, and AT96C53 is than AT89C51, and ram space is bigger, and the ram space of AT89C51 only has the half of AT96C53；FLASH is bigger, and the capacity of the FLASHROM within AT89C51 only has 4KB；Interrupt source is more, and AT96C53 adds a timer/counter T2 on the basis of AT89C51.
This single-chip microcomputer small volume, it is allowed to low voltage power supply, it is only necessary to two ports just can meet the demand of design electric body-temperature meter systems, and therefore it can use two whose power supplieds.
The pin function introduction of AT96C53:
P0 mouth: P0 mouth could also say that address/data bus multiplexing mouth, it is one group of open-drain type two-way I/O mouth, has 8.When to P0 port one writing, can use as high impedance input.When using as delivery outlet, its output buffer stage can drive 8 TTL logic gates.
During program ver-ify, output order, during verification, it is desirable to external pull-up resistor., and when Flash programs, P0 port receives instruction.
Every potential energy output electric current of P1 mouth: P1 can drive 4 TTL logic gates.The two-way I/O mouth of its band internal pull-up resistor, as the input port used time, can export an electric current by totally 8 when certain pin is dragged down by external signal, this is because with the presence of pull-up resistor inside it.When to port P1 one writing, present P1 can regard input port, this is because internal pull-up resistor moves port to high level.
P1.0 Yu P1.1 of AT96C53 can also input respectively as the external counting of Timer/Counter 2 and output, and the most generally speaking, AT96C53 is the enhancement mode of AT89C51.
The inside of P2 mouth: P2 can drive 4 TTL logic gates with pull-up resistor, its output electric current, and it is 8 two-way I/O mouths.If during to P2 mouth one writing, now this port can use as input port, this is because pull-up resistor moves P2 mouth to high level, meanwhile, certain pin can export an electric current (when this pin is dragged down by external signal).
When flash memory verification or programming, port can receive control and the high-order address signal of a part.
When accessing the outside datamemory of 8 bit address, the content of P2 latch can be exported by P2 port.When accessing the outside datamemory or outside programmemory of 6 bit address, P2 port can export most-significant byte address date.
P3 mouth: the inside of P3 mouth can drive 4 TTL logic gates with pull-up resistor, its output electric current, it is one group of 8 two-way I/O mouth.The general utility functions of P3 mouth relatively, its second function is even more important, and it can receive some control signals for program ver-ify Yu Flash flash memory.
When to P3 port one writing, this port can use as input port, this is because pull-up resistor moves P3 mouth to high level, meanwhile, it will export electric current with pull-up resistor, and this is the reason dragged down by external signal due to P3 mouth.
XTAL1: internal oscillator inverting amplifier and the input of clock generator.
XTAL2: the output port of agitator inverting amplifier.
PSEN:programmemory allows the read strobe signal of outside programmemory during PSEN output, when single-chip microcomputer is fetched data by outside programmemory, and each machine cycle exports two subpulses.In this process, if access outside datamemory, twice PSEN signal can be skipped.
RST: the RESET input.When oscillator operation, when the pin of RST produce more than two machine cycles high level time, AT96C53 can be made to reset.
EV/VPP: outside access allows port.Only when EA end ground connection, CPU just can be made only to allow outside programmemory, wherein address is 0000H-FFFFH.During flash memories programming, EV/VPP port connects the programming of+12V and allows power supply.
ALE/PROG:ALE is that address latch allows port, and PROG is input programming pulse port.
When accessing outside datamemory or datamemory, ALE output pulse is for the least-significant byte byte of latch address.Majority of case, ALE is to export constant pulse signal with the oscillation frequency clock of 1/6, so it can be used for timing purpose or externally exports clock.It should be noted that: an ALE pulse can be skipped whenever accessing outside datamemory.To FlashmemoryProgrammingPeriod, this port also will be used for PROG(input programming pulse).
The specific function of AT96C53
In the sheet of single-chip microcomputer in datamemory, the field bit 128 unit between 80H to FFH are referred to as SFR(special function register), in the range of this field bit, only some byte is defined, and also has byte not greatly to be defined.The unit not being defined cannot be written and read operation, and the data of write will be lost, and the data of reading are the most inaccurate.The numerical value of these unit the most always " 0 ".
The data storage of AT96C53
Single-chip microcomputer has the internal random access memory of 256 bytes, SFR(special function register) it is overlapping with the address of high 128 bytes between 80H to FFH, but they are separate physically.When the address of the internal element of instruction access has difference in more than 7FH, the addressing system that instruction is used, if instruction is to access in the way of indirect addressing, then it will access the random access memory of high 128 bytes.If instruction is to access in the way of direct addressin, then access specific function is deposited by it.
The interruption of AT96C53
AT96C53 single-chip microcomputer has 6 interrupt sources: a serial is interrupted, 0,1,2 three Interruption intervalometers, two external interrupt of INT0, INT1.The related interrupts that each interrupt source can be transferred through removing in specified register IE allows control bit to make interrupt source invalid, makes interrupt source effective by set.Wherein, IE is also containing an interruption master control position that all interruptions can be made to forbid, it is exactly EA.
As shown in the table, IE.6 is useless.For AT89S52 single board computer, IE.5 is the most unavailable.These are reserved for the New Type of Chip Microcomputer of AT89 series, and user need not write 1 to them when programming.
When flag bit TF1 and TF0 of intervalometer 0,1 overflows at counting, in this cycle, S5P2 is set, and circuit can be in their value of next cycle capture.When the flag bit TF2 of timer 2 overflows at counting, it is set with a cycle S5P2, and circuit can be in its value of same cycle capture.
In depositor T2CON EXF2's and TF2 or logic can trigger timer 2.Above-mentioned flag bit can be reset by hardware after program enters to interrupt service.In the middle of reality, interrupt service routine is bound to judge whether be that EXF2 or TF2 activates interruption.Flag bit also must be reset by software.
Two kinds of mode of operations of AT96C53
(1) power down operations pattern: the instruction making single chip computer AT 96C53 enter power-down mode is typically all the instruction being finally performed, under this scheme, the content of special function register and Random-AccessMemory in sheet (random access memory) is by frozen, and agitator also can quit work.Can only exit power-down mode by hardware reset, the content in the RAM of the AT96C53 chip after reset will not change, and simply can be redefined by all of special function register.It should be noted that, when Vcc does not also return to normal working voltage, AT96C53 chip cannot be resetted, in addition, also should keep certain time that agitator is restarted after Vcc returns to normal working voltage and steady operation side can be reset operation.
(2) vacant working pattern: in this operating mode, all the external equipment in sheet is active, CPU then keeps sleep state, meanwhile, in whole special function registers and sheet, the content of Random-AccessMemory (random access memory) is by frozen, unlike power down operations pattern, the interrupt requests of hardware reset or any permission can exit vacant working pattern.By the way of hardware reset, exit vacant working pattern have only to the effective reset signal of two Machine cycles, during this period, allow access port pin, but the internal Random-AccessMemory (random access memory) of hardware access in forbidding sheet, in order to avoid surprisingly writing port during exiting vacant working pattern, a rear instruction of the instruction activating vacant working pattern should not be the write instruction to external memory storage or port.
2, temperature sensor
DS1920, as conventional temperature sensor, has precision high, and capacity of resisting disturbance is strong, with low cost, the features such as volume is little.Its temperature-measuring range is-55 ° of C～125 ° of C, 1 ° of C of constant error.Running voltage is 3.0～5.5V/DC, it is adaptable to small power supply operating circuit.
The pin explanation of DS1920
(1) GND earth signal
(2) DQ data input/output pin.Open-drain single bus interface pin.When by with under at parasite power, it is also possible to provide power supply to device.
(3) VDD selectable VDD pin.When utilizing parasite power to work, this pin is sure to ground connection.
The temperature-measurement principle of DS1920
Temperature sensor collecting temperature information, single-chip microcomputer transmits temperature transition and instructs to temperature sensor, and DS1920 can start conversion, and the temperature value after conversion is just stored in the 1st, 2 byte of scratchpad with signed 16 complement of two's two's complement forms.By data wire, AT96C53 can read these data, and the mode of reading is high-order rear, and low level is front, and form is 0.0625 ° of C/LSB.16 bit data of gained after converting, it is stored in the random access memory of two 8bit of temperature sensor, the most first 5 represent sign bit, when the temperature recorded is less than 0 ° of C, this 5 bit value puts 1, add 1 after being negated by the numerical value obtained by measurement, and take advantage of 0.0625, it becomes possible to obtain actual temperature value.When the temperature recorded is higher than 0 ° of C, and this 5 bit value is all 0, only need to be multiplied by 0.0625 by recording data, just available actual temperature value.The output numeral of such as+25.0625 ° of C is 07D0H.
The profile of DS1920 and internal structure
The internal structure of DS1920 temperature sensor is mainly made up of four parts: configuration register, temperature sensor, non-volatile temperature alarming trigger TL and TH, 64 photoetching read only memory.
The application circuit of DS1920
The temp measuring system of temperature sensor has many good qualities, and such as connection jaws is less, convenience connects, the precision of measurement is high, temp measuring system is simple.DS1920 has several different application mode (external power source power supply mode, parasite power strong pull-up power supply mode, parasite power power supply mode), the temperature measurement circuit figure of its correspondence is the most different, because its external unit power supply mode working method that to be temperature sensor optimal, circuit is simple, capacity of resisting disturbance is strong, and working stability, reliable and stable multipoint temperature monitoring system, all external power source power supply modes that it is described below can be opened to.
Under external power source power supply mode, the working power of pin VDD cut-in temperature sensor, now source current enough can ensure that the conversion of precision, therefore I/O line there is no need strong pull-up, from the point of view of in theory, bus can also connect multiple temperature sensor DS1920, form multipoint temperature measuring system.
When utilizing external power supply to be powered, the advantage of the money supply voltage scope of temperature sensor DS1920 can be played to obtain dripping exquisiteness, even if supply voltage drops to 3V, still can ensure that the precision measuring temperature.
Claims (6)
1. an Internet of Things remote measurement body temperature device, it is characterised in that: include bar shaped is wound around band and the temperature sensor being arranged in winding band, master controller, network transmission circuit, filter amplification circuit, A/D change-over circuit, display, repeater, host computer；Described temperature sensor connects filter amplification circuit, described filter amplification circuit is connected A/D change-over circuit and is connected with master controller by A/D change-over circuit, described temperature sensor gathers the temperature data of human body and generates analogue signal, filter amplification circuit sends A/D change-over circuit to after analogue signal is amplified and filtered, it is that digital signal is uploaded to master controller that the temperature analog signal of this filter and amplification is carried out digital-to-analogue conversion by described A/D change-over circuit, described display is connected with master controller, the digital signal received by master controller shows over the display；Described master controller is connected with wireless transport module by network transmission circuit, described wireless transport module is connected with host computer by repeater, digital signal is uploaded to wireless transport module through network transmission circuit by described master controller, the repeated device of wireless transport module be connected with host computer radio communication.
Internet of Things remote measurement body temperature device the most according to claim 1, it is characterised in that: described Internet of Things remote measurement body temperature device also includes that warning circuit, alarm, described single-chip microcomputer are connected with alarm by warning circuit；When temperature sensor measurement exceedes master controller predetermined value, alarm sends alarm signal.
Internet of Things remote measurement body temperature device the most according to claim 1, it is characterised in that: described Internet of Things remote measurement body temperature device also includes panel and the key circuit being provided with input button, and described key circuit is connected with master controller.
Internet of Things remote measurement body temperature device the most according to claim 1, it is characterised in that: described temperature sensor is DS1920 temperature sensor.
Internet of Things remote measurement body temperature device the most according to claim 1, it is characterised in that: described master controller is AT96C53 single-chip microcomputer.
Internet of Things remote measurement body temperature device the most according to claim 1, it is characterised in that: described display is LCD liquid crystal display.
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| CN205814305U (en) * | 2016-05-11 | 2016-12-21 | 李海军 | A kind of Internet of Things remote measurement body temperature device |
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| CN103271725A (en) * | 2012-10-11 | 2013-09-04 | 刘镕畅 | Vital sign multi-parameter real-time cloud storage wristwatch device based on internet of things technology |
| CN103385700A (en) * | 2013-08-02 | 2013-11-13 | 王卫东 | High-precision rapid self-calibration wireless electronic thermometer |
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Effective date of registration: 20181116 Address after: 467000 workstation C02 on the second floor of the office building of Sanli Industrial Park, No. 6 Development Road, Pingdingshan High-tech Zone, Henan Province Applicant after: Pingdingshan three and Intelligent Technology Co., Ltd. Address before: 467000 Guangming District Gao 1 Building 504, North Guangming Road, Pingdingshan City, Henan Province Applicant before: Li Haijun |
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Application publication date: 20160803 |