CN209230663U - One kind being based on Embedded human comfort instrument - Google Patents

Abstract

The utility model provides a kind of based on Embedded human comfort instrument, S3C2440 core processor, humiture collection circuit, wind speed Acquisition Circuit, RTC clock circuit, data memory module, display module, debugging module are equipped in human comfort instrument, the humiture collection circuit, wind speed Acquisition Circuit, RTC clock circuit, data memory module, display module, debugging module are separately connected S3C2440 core processor.The utility model realizes low-power consumption, micromation, high-acruracy survey using 32 risc microcontroller S3C2440 and peripheral circuit, while having scalability abundant；Human body comfort level instrument integrated level is high, and strong real-time, high sensitivity is reliable and stable, meets the developing goal of wisdom meteorology, can satisfy the demand of the Meteorological Services to more closeness to life, there is vast potential for future development.

Description

One kind being based on Embedded human comfort instrument

Technical field

The utility model belongs to field of embedded technology, is based on Embedded human comfort instrument more particularly, to one kind.

Background technique

Human comfort is concentrated expression of the human body to meteorological elements such as temperature, relative humidity and wind speed, is people to more The Meteorological Services proposed requirement of high quality.Body Comfort Index is from meteorological angle, according to people and weather environment Between heat exchange defined to evaluate the comfort of the human body under different weather environments according to the difference of the comfort A meteorological index.External experts and scholars have established preferable basis to the research of human comfort.Yagtou with Houghten proposes true feeling temperature according to the cold and hot feeling that human body generates under different meteorological conditions；Thom and Bosen The concept of discomfort index is studied and proposes, Noaa forecasts summer comfort level and work according to the research of two people When number；Steadman proposes apparent temperatures theory, he considers that heat exchange of the people in weather environment, calculation obtain body-sensing temperature Spend model.Domestic experts and scholars start late to the research of human comfort.Qian Miaofen, Ye Mei propose that " pleasant Climate degree is commented Valence " model；Lu Dinghuang proposes comprehensive comfort level index by studying influence warm, wet, that wind element is to human body；Lv Weilin according to Experiment proposes apparent temperature model [6]；Zhu Weihao etc. analyzes the national Body Comfort Index variation characteristic of 1981-2010； Zhu Mengfen analyzes Hulunbeier City Body Comfort Index spatial and temporal distributions trend.

The physiological function of human body is influenced by a variety of meteorological elements, such as temperature, relative humidity, air pressure, light irradiation time, wind Speed and wind direction etc..Correlative study shows that three temperature, relative humidity, wind speed meteorological elements influence maximum, people on human comfort The nonlinear equation that body ride number is made of these three meteorological elements, the equation derive from Beijing City Weather Bureau from 1997 The Comfort Index Forecast model that year begins to use, the human comfort instrument of the application design are exactly to utilize the model for base This algorithm.A human comfort instrument based on embedded technology is designed herein, utilizes the external temperature and humidity of embedded board, wind Fast sensor, acquisition data pass through liquid crystal display real-time display and provide comfort level conclusion.

Summary of the invention

In view of this, the utility model, which is directed to one kind, is based on Embedded human comfort instrument, the utility model Technical solution is achieved in that

One kind being based on Embedded human comfort instrument, be equipped in the human comfort instrument S3C2440 core processor, Humiture collection circuit, wind speed Acquisition Circuit, RTC clock circuit, data memory module, display module, debugging module, the temperature Humidity collection circuit, wind speed Acquisition Circuit, RTC clock circuit, data memory module, display module, debugging module are separately connected S3C2440 core processor；Wherein,

The humiture collection circuit includes SHT10 chip, and S3C2440 controls sensor SHT10's by GPC10 pin Add power-off, to reduce power consumption；It is connected respectively with the DATA of SHT10 with SCK pin by GPC8 with GPC9 pin, SCK is used for Communication between SHT10 and S3C2440 is synchronous, and DATA is for the data interaction between SHT10 and S3C2440 core processor；

The wind speed Acquisition Circuit includes air velocity transducer WM30, and air velocity transducer connects optic coupling element by transit ports No. 3 pins of TLP521, TLP521 are signal output port, are connected to S3C2440 core processing after concatenating two NOT gate devices The port GPD0 of device.

Further, the human comfort instrument is additionally provided with expansible alarm module, the alarm module connection S3C2440 core processor.

Further, the RTC clock modular circuit includes Y1 capacitor, on the one hand Y1 capacitor is connected to S3C2440 core On the other hand the port XTIrtc and XTOrtc of processor passes through the capacity earth of two 22pF.

Further, the data memory module includes SDCARD module, and the DATA2 pin of SDCARD module is connected to The SDDATA2/GPE9 pin of S3C2440, the DATA3 pin of SDCARD module are connected to the SDDATA2/GPE10 pipe of S3C2440 Foot, the CMD pin of SDCARD module are connected to the SDCMD/GPE6 pin of S3C2440, and the CLK pin of SDCARD module is connected to The DATA0 pin of the SDCLK/GPE5 pin of S3C2440, SDCARD module is connected to the SDDATA0/GPE7 pin of S3C2440, The DATA1 pin of SDCARD module is connected to the SDDATA1/GPE8 pin of S3C2440, and the CARDDT pin of SDCARD module connects It is connected to the EINT0/GPF0 pin of S3C2440, is also connected with resistance and capacitor between SDCARD module and the connecting line of S3C2440.

Further, the display module includes LCD module, and LCD module is connected to S3C2440 respective tube by each pin Foot.

Further, the debugging module includes jtag interface, and it is corresponding that jtag interface by each pin is connected to S3C2440 Pin.

Further, the microprocessor S3C2440 uses ARM920t kernel, and the COMS standard with 0.13 micron is macro Unit and memory cell and new bus architecture, provide the dedicated DMA of LCD in 1 channel, in 4 channel PWM timers and 1 channel Portion's timer/WatchDog Timer, 8 channel 10bit ADC and touch screen interface, in 130 universaling I/O ports and 24 channel outsides Disconnected source is powered using the power supply of 1.2V kernel and 3.3V exterior I/O.

Compared with the existing technology, one kind described in the utility model is had following excellent based on Embedded human comfort instrument Gesture:

(1) the utility model realizes low-power consumption, miniature using 32 risc microcontroller S3C2440 and peripheral circuit Change, high-acruracy survey, while there is scalability abundant；Human body comfort level instrument integrated level is high, strong real-time, high sensitivity, It is reliable and stable, meet the developing goal of wisdom meteorology, can satisfy the demand of the Meteorological Services to more closeness to life, has wide Wealthy development prospect；

(2) the warm and humid integrative sensor of humiture collection circuit application new digital of the utility model, and design program-controlled biography Sensor adds power-down circuit, improves measurement accuracy, reduces power consumption；

(3) the wind speed Acquisition Circuit application S3C2440 connection high-precision air velocity transducer WM30 measurement of the utility model is relaxed Wind speed needed for appropriate instrument is realized using photoelectric coupled device and two NOT gate devices and reduces signal interference.

Detailed description of the invention

The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.? In attached drawing:

Fig. 1 is a kind of schematic diagram based on Embedded human comfort instrument described in the utility model embodiment；

Fig. 2 is S3C2440 core processor circuit diagram described in the utility model embodiment；

Fig. 3 is humiture collection circuit diagram described in the utility model embodiment；

Fig. 4 is wind speed Acquisition Circuit schematic diagram described in the utility model embodiment；

Fig. 5 is RTC clock modular circuit schematic diagram described in the utility model embodiment；

Fig. 6 is data memory module circuit diagram described in the utility model embodiment；

Fig. 7 is display module circuit diagram described in the utility model embodiment；

Fig. 8 is debugging module circuit diagram described in the utility model embodiment.

Specific embodiment

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result, Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another It is described, the meaning of " plurality " is two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition State the concrete meaning of term in the present invention.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

As shown in figures 1-8, the utility model provides a human comfort instrument based on real time operating system, utilizes insertion Formula development board and temperature, relative humidity and the air speed data of sensor real-time collecting position, and will acquire at data Reason, obtains human comfort numerical value according to human comfort rudimentary algorithm model, finally according to the human comfort index of division Range provides comfort level conclusion, and temperature and humidity, wind speed, comfortable angle value and conclusion The results are shown by liquid crystal display；Human comfort simultaneously Spending instrument has data storage function, and expansible warning function.

The overall structure block diagram of the utility model is as shown in Figure 1, include S3C2440 core processor, humiture collection electricity Road, wind speed Acquisition Circuit, RTC clock circuit, data memory module, display module, debugging module, expansible alarm module.

Humiture collection circuit is handled using Temperature Humidity Sensor acquisition data, wind speed Acquisition Circuit is passed using wind speed Sensor acquisition data are handled, and S3C2440 core processor module is entered finally into, and data after finally output processing are called The display program of system is shown.RTC clock circuit is devised, accurate reliable system time is provided for system, guarantees system System has preferable real-time；Data memory module is for saving the processed data of system acquisition；System debug module is for being The downloading of system program is debugged；Alarm module sends short message report as extension function, expansible sound-light alarm or increase gsm module It is alert.

The utility model design human comfort instrument main characteristics be low-power consumption, micromation, high-acruracy survey and Scalability abundant.32 risc microcontrollers for using Samsung to release for the function characteristics more than realizing, system S3C2440, it uses ARM920t kernel, with 0.13 micron of COMS standard macroelement and memory cell and new bus Framework；The dedicated DMA of LCD in 1 channel, 4 channel PWM timers and 1 channel interior timer/WatchDog Timer, 8 channels are provided 10bit ADC and touch screen interface, 130 universaling I/O ports and 24 channel exterior interrupts, using the power supply of 1.2V kernel and 3.3V Exterior I/O power supply is highly suitable for the highly integrated Embedded Application with low-power consumption of processing requirement.Circuit diagram is as shown in Figure 2.

The utility model obtains temperature and relative humidity data using new digital Temperature Humidity Sensor SHT10.Human body Comfort level instrument humiture collection circuit is as shown in Figure 3.

SHT10 is a temperature and humidity compound sensor containing the output of calibrated digital signal, its applicable industry CMOS mistake Journey micro-processing technology, so that sensor reliability is high with stability.Sensor includes an energy gap type temperature measurement element, an electricity Appearance formula temperature element, one 14 A/D converters and serial interface circuit, SHT10 sensor is before factory all by accurate Humidity calibration, calibration factor is stored in OTP memory, and sensor needs to call during signal detection processing the calibration be Number.The sensor has many advantages, such as that quality brilliance, super fast response, strong antijamming capability, cost performance are high, is highly suitable to be applied for this Design.

The temperature resolution of SHT10 Temperature Humidity Sensor is 0.01 DEG C, and repeatability is ± 0.1 degree Celsius, relative humidity Resolution ratio is 0.03%RH, and repeatability is ± 0.1%RH.As shown in figure 3, S3C2440 controls sensor by GPC10 pin SHT10's adds power-off, to reduce power consumption；It is connected respectively with the DATA of SHT10 with SCK pin by GPC8 with GPC9 pin, Communication of the SCK between SHT10 and S3C2440 is synchronous, and DATA is for the data interaction between SHT10 and S3C2440. The initialization that S3C2440 carries out data transmission first, when it includes: GPC9 output high level, GPC8 exports low level, later GPC9 exports low level, and GPC8 overturning is high level when and then GPC9 exports high level.Later, S3C2440 is sent to SHT10 Order, command byte are 8, are made of high 3 address bits and low 5 command bits, and ' 00000011 ' indicates temperature measurement, ' 00000101 ' indicates relative humidity measurement.S3C2440 is by GPC8 being dragged down to come after the failing edge of the 8th SCK clock Expression has correctly received order, and after the failing edge of the 9th SCK clock, S3C2440 discharges GPC8.The temperature of the utility model Humidity collection circuit has added a pull-up resistor at the end DATA of SHT10, it is therefore an objective to so that signal output has determining level.It answers It with the warm and humid integrative sensor of new digital, and designs program-controlled transducer and adds power-down circuit, improve measurement accuracy, reduce power consumption.

The utility model carries out human comfort instrument using the three-cup wind speed sensor WM30 of Vaisala Oy The measurement of wind speed.It is that (wind is used only in the wind speed wind direction sensor of a compact economy in the design that wind sensor WM30 is drawn in Visa Speed measurement part), the cup type anemometer of the three of rotation is located at the top of entire sensor device, provides wind speed linear response； The material and shape of vane and accurate measurement having a size of wind speed provide guarantees, while vane guarantees by stringent test Linear response is made between wind speed and the angular speed of cup wheel.The characteristic and advantage of WM30 includes: that cost is relatively low, is designed light small It ingeniously, is the optimal selection of mobile application, power consumption is lower, the quick and linear response to wind.

Wind speed is exported in the form of relay, and the umber of pulse that can recorde in the set time carrys out calculation of wind speed, can also be with By the time interval between measurement continuous impulse come calculation of wind speed.It is used herein to record the umber of pulse in the set time to count Calculate wind speed.Human comfort instrument wind speed Acquisition Circuit is as shown in figure 4, between S3C2440 and air velocity transducer signal output end TLP521 photoelectric coupled device and 2 NOT gate devices are added, it is therefore an objective to for reducing signal interference.

In Fig. 4, P1 is transit ports, and to connect air velocity transducer WM30, wherein pin 3 is signal output port； TLP521 is optic coupling element, to keep apart air velocity transducer and S3C2440, reduces signal cross-talk, No. 1 pipe of TLP521 Foot is signal input part, connects No. 3 pins of P1, and No. 3 pins of TLP521 are signal output port, concatenate two NOT gate devices It is connected to the port GPD0 of S3C2440 afterwards.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (7)

1. one kind is based on Embedded human comfort instrument, it is characterised in that: be equipped with S3C2440 core in the human comfort instrument Heart processor, humiture collection circuit, wind speed Acquisition Circuit, RTC clock circuit, data memory module, display module, debugging mould Block, the humiture collection circuit, wind speed Acquisition Circuit, RTC clock circuit, data memory module, display module, debugging module It is separately connected S3C2440 core processor；Wherein,

The humiture collection circuit includes SHT10 chip, and S3C2440 is disconnected by adding for GPC10 pin control sensor SHT10 Electricity, to reduce power consumption；It is connected respectively with the DATA of SHT10 with SCK pin by GPC8 with GPC9 pin, SCK is used for SHT10 Communication between S3C2440 is synchronous, and DATA is for the data interaction between SHT10 and S3C2440 core processor；Temperature and humidity Acquisition Circuit has added a pull-up resistor at the end DATA of SHT10, so that signal output has determining level；

The wind speed Acquisition Circuit includes air velocity transducer WM30, and air velocity transducer connects optic coupling element by transit ports No. 3 pins of TLP521, TLP521 are signal output port, are connected to S3C2440 core processing after concatenating two NOT gate devices The port GPD0 of device reduces signal cross-talk to keep apart air velocity transducer and S3C2440.

2. according to claim 1 a kind of based on Embedded human comfort instrument, it is characterised in that: the human comfort Degree instrument is additionally provided with expansible alarm module, and the alarm module connects S3C2440 core processor.

3. according to claim 1 a kind of based on Embedded human comfort instrument, it is characterised in that: the RTC clock Modular circuit includes Y1 capacitor, on the one hand Y1 capacitor is connected to the port XTIrtc and XTOrtc of S3C2440 core processor, On the other hand pass through the capacity earth of two 22pF.

4. according to claim 1 a kind of based on Embedded human comfort instrument, it is characterised in that: the data storage Module includes SDCARD module, and the DATA2 pin of SDCARD module is connected to the SDDATA2/GPE9 pin of S3C2440, The DATA3 pin of SDCARD module is connected to the SDDATA2/GPE10 pin of S3C2440, the CMD pin connection of SDCARD module CLK pin to the SDCMD/GPE6 pin of S3C2440, SDCARD module is connected to the SDCLK/GPE5 pin of S3C2440, The DATA0 pin of SDCARD module is connected to the SDDATA0/GPE7 pin of S3C2440, and the DATA1 pin of SDCARD module connects It is connected to the SDDATA1/GPE8 pin of S3C2440, the CARDDT pin of SDCARD module is connected to the EINT0/GPF0 of S3C2440 Pin is also connected with resistance and capacitor between SDCARD module and the connecting line of S3C2440.

5. according to claim 1 a kind of based on Embedded human comfort instrument, it is characterised in that: the display module Including LCD module, LCD module is connected to S3C2440 respective pin by each pin.

6. according to claim 1 a kind of based on Embedded human comfort instrument, it is characterised in that: the debugging module Including jtag interface, jtag interface is connected to S3C2440 respective pin by each pin.

7. according to claim 1-6 a kind of based on Embedded human comfort instrument, it is characterised in that: described S3C2440 core processor uses ARM920t kernel, with 0.13 micron of COMS standard macroelement and memory cell and newly Bus architecture, provide the dedicated DMA of LCD in 1 channel, 4 channel PWM timers and 1 channel interior timer/house dog timing Device, 8 channel 10bit ADC and touch screen interface, 130 universaling I/O ports and 24 channel exterior interrupts are supplied using 1.2V kernel Electricity and 3.3V exterior I/O power supply.