CN101358882A - Wireless module,wireless temperature sensor,wireless interface device,and wireless sensor system - Google Patents
Wireless module,wireless temperature sensor,wireless interface device,and wireless sensor system Download PDFInfo
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- CN101358882A CN101358882A CNA2008102109037A CN200810210903A CN101358882A CN 101358882 A CN101358882 A CN 101358882A CN A2008102109037 A CNA2008102109037 A CN A2008102109037A CN 200810210903 A CN200810210903 A CN 200810210903A CN 101358882 A CN101358882 A CN 101358882A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a wireless module, a wireless temperature sensor, a wireless interface device, and a wireless sensor system, wherein a radio temperature sensor is provided which is attached to a body surface of a person who needs care for measuring the person's body temperature. The radio temperature sensor can measure the body temperature of a person who needs care and moves around in a facility. The radio temperature sensor includes a radio function for transmitting measured data via a chip antenna. The chip antenna is formed with an antenna length of a reduction ratio that can be contained in a container. Moreover, there is provided a radio interface device having a radio communication function arranged on a compact flash (trade mark) card which reduces the carrier frequency, reduces the size of the antenna, increases the communication distance, and reduces the power consumption. Moreover, there is provided a radio sensor system in which a sensor reports the environment information around the installation place by a radio communication machine and a base station collects environment information from a plurality of sensors.
Description
Technical field
The present invention relates to wireless module, radio temperature sensor, radio interface device and wireless sensor system, radio temperature sensor is measured the temperature of the object that is connected airtight, and this measurement result is sent with radio communication; Radio interface device inserts in PDA (Persona Digital Assistant) and the PC external interfaces such as (Personal Computer) and uses; Environmental information around wireless sensor system, sensor are provided with by the wireless communicator notice is collected from the environmental information of a plurality of sensors by the base station.
Background technology
In hospital or nurse facility etc., be subjected to ward's body temperature because be necessary observation in 24 hours, so the ward utilizes clinical thermometer measured by ward's body temperature.
But in above-mentioned assay method, the ward is necessary many wards' of being subjected to that results of regular determination is responsible for body temperature, thereby the ward spends the considerable time.So, have the big problem of burden that gives the ward.
Therefore, measured by ward's body temperature, developed the temperature sensor that can directly read determination data with terminal, for example, imbed the temperature sensor of measuring temperature in the body, according to resonance frequency in order to simplify.(for example, with reference to patent documentation 1)
But the temperature sensor shown in the above-mentioned patent documentation 1 must be imbedded in the body that is subjected to the ward and use, and use is defined.
For the common ward that is subjected to, there is no need temperature sensor is imbedded in the body, therefore, many body temperature of ward that are subjected to are being measured, the ward must go to become the place that is subjected to ward's object and carry out the not solution of problem that body temperature is measured.
And, also have at terminal to connect thermometer, measure and monitor the method for the body temperature that is subjected to the ward, still, in facility, just can not use when mobile by the ward.
In addition, in recent years, between PDA or various signal conditioning packages etc.,, use closely for example same indoor (for example, with reference to the patent documentations 2) such as communications of IC-card as the interface of PC calliper lattice (according to standard specification) based on PCMCIA.
Medium that IC-card is not only used as data storage and being used, but also be used in the expansion of peripherals.
But patent documentation 2 described wave points form the IC-card shape as mentioned above.
Therefore, above-mentioned wave point, in PDA, do not correspond to the CF (Compact Flash (registered trademark)) that is used for becoming in recent years standard, SD card (registered trademark), SmartMedia (registered trademark) etc. the storer expansion, the outside adheres to memory-aided interface (slot or expansion slot) etc.
In addition, in the wave point of IC-card, as the frequency band of carrier wave, employing is used for the 2.4GHz frequency band and the 5GHz frequency band of WLAN etc., but, can not obtain sufficient communication distance by these frequencies, it is many and can not be towards the shortcoming of the portable terminal of PDA etc. to exist consumed power.
On the other hand, specific low-power wireless or faint wireless is different from above-mentioned WLAN, though communication distance is long, consumed power is few, and because of carrier frequency is low, so wavelength is long, it is big that antenna becomes, and the degree of freedom of PDA descends, and impairs the design of outward appearance.
And then, wireless senser in the past, to the environmental information of determination object, when for example temperature is measured, resistance value (sensor determination value) accounting temperature from sensor device is measured sends to base station (with reference to patent documentation 3) as result of calculation with temperature (environmental information).
Therefore, wireless senser in the past in single sensor device, carries out environmental information and (for example, temperature sends to the base station after) the revisal, so can obtain to measure the high environmental information numerical value of precision.
But, in above-mentioned conventional example, in wireless senser, in order to be transformed to environmental information (temperature, humidity, accumulated snow, all gases concentration etc.) as the physical quantity (resistance value, magnitude of voltage, current value, force value, frequency values etc.) of the measured value of sensor, exist the calculation process that is used for conversion and become many, and the many problems of the consumption quantitative change of consumed power.
Have, in this conventional example, in order to be transformed to the numerical value of environmental information as the physical quantity of the measured value of sensor, the formation that is used for the wireless senser of calculation process becomes complicated, and becomes the high price product again.
Also have,, will directly send to the base station by the measured value that sensor device is measured in order to deal with the problems referred to above, in the base station, carry out being transformed to the computing of environmental information as the physical quantity of this measured value, thus the processing load of reduction sensor device, and it is simple that the formation of sensor device also becomes.
On the other hand, in this mode, since only have this sensor device intrinsic, promptly corresponding to the operation processing function of specific sensor device, so become intrinsic sensing system, exist the sensor device that can not replace with other kinds, and be difficult to shortcoming by multiple sensor device construction system.
In addition, the sensing system of aforesaid way, when in the computing that will be transformed to environmental information, utilizing look-up table as the physical quantity of measured value, owing to use the same conversion table, so be difficult to constitute by multiple sensor device manufacturing system.
In addition, the sensor device of aforesaid way, only will be transformed to the numerical value of environmental information, can not carry out the correction of measured value and the revisal of the environmental information after the conversion, can not deal with the timeliness of single sensor device as the physical quantity (by the raw data of sensor determination) of the measured value of sensor.
[patent documentation 1]: the spy opens clear 62-192137 communique
[patent documentation 2]: the spy opens the 2001-195553 communique
[patent documentation 3]: the spy opens flat 02-138837 communique
Summary of the invention
The present invention carries out in view of the above problems, its purpose is to provide a kind of radio temperature sensor, radio interface device and wireless sensor system, this radio temperature sensor is sticked on the surface that is subjected to the ward carry out the mensuration of body temperature, and the ward that is subjected to who is displaced in the facility also can be used as determination object; Radio interface device reducing carrier frequency and dwindling antenna, prolongs communication distance, on Compact Flash (registered trademark) card of low consumpting powerization etc. radio function can be set; Wireless sensor system sends to the base station with the measured value of sensor device, carries out the correction of this measured value and the revisal of the physical quantity after the conversion, can obtain high-precision environmental information.
Technical scheme 7 described radio temperature sensors is characterized in that, said vesse forms with the size of about 500 Japanese yen coins.
Technical scheme 9 described radio temperature sensors is characterized in that, the antenna length of above-mentioned antenna is below 1/8 of electric wave wavelength of employed frequency.
Antenna substrate; Electrically conductive film, it is arranged on the part on the above-mentioned antenna substrate; Supply terminals, it is arranged on the substrate of above-mentioned antenna; Loading part, it is arranged on the above-mentioned antenna substrate, by be formed at material that inductive material constitutes vertically on the linear conductor pattern constitute; Inductor portion, it connects an end and the above-mentioned electrically conductive film of above-mentioned conductive pattern; Supply terminals, an end of above-mentioned conductive pattern and the tie point of above-mentioned inductor portion are given in its power supply; Vertically being configured to of above-mentioned loading part is parallel with the end limit of above-mentioned electrically conductive film.
In addition, radio interface device of the present invention, it is corresponding to the interface of storer, and possesses antenna with radio communication function, it is characterized in that, be used in the antenna length of above-mentioned antenna of the transmission/reception of carrier frequency, constitute with the LVFS in the specification scope of above-mentioned storer, above-mentioned antenna is arranged at the inside of above-mentioned radio interface device.
Radio interface device of the present invention is characterized in that, the adjustment circuit of adjusting above-mentioned antenna and supplying with the impedance of the signal line that sends signal further is set.
Radio interface device of the present invention is characterized in that, is used in the wave filter of the carrier band signal of communication by prevention, the high-frequency circuit earth point is connected on the earth point of logical circuit.
Radio interface device of the present invention is characterized in that, above-mentioned antenna comprises: substrate; Electrically conductive film, it is arranged on the part on the above-mentioned antenna substrate; Supply terminals, it is arranged on the aforesaid substrate; Loading part, it is arranged on the above-mentioned antenna substrate, by be formed at material that inductive material constitutes vertically on the linear conductor pattern constitute; Inductor portion, it connects an end and the above-mentioned electrically conductive film of above-mentioned conductive pattern; Supply terminals, an end of above-mentioned conductive pattern and the tie point of above-mentioned inductor portion are given in its power supply; Vertically being configured to of above-mentioned loading part is parallel with the end limit of above-mentioned electrically conductive film.
In addition, wireless sensor system of the present invention is characterized in that, above-mentioned wireless sensor system is made of wireless senser and data collector terminal, this wireless senser is arranged at a plurality of places, and the measured value that is obtained corresponding to environmental information on every side by sensor device also sends; The data collector terminal, be arranged in the base station, the measured value that reception sends from this wireless senser, from this measured value computing environmental information and collect the environmental information in above-mentioned place, above-mentioned wireless senser has: sensor, its will around environmental information as exporting based on the measured value of the physical characteristics of sensor device; Wireless transmission part (wireless transmission/acceptance division 2, wireless transmission part 2B), it will pass through wireless transmission by the determination data that said determination value and recognition data constitute; Above-mentioned data collector terminal has: the information converting storage part, and it is according to each above-mentioned wireless senser, and storage is used for the measured value of the sensor device of registered wireless senser is transformed to the information converting of environmental information; Transformation component, it judges wireless senser from above-mentioned recognition data, according to this physical characteristics and the information converting corresponding to this wireless senser, carrying out the said determination value transform is the computing of environmental information.
Wireless sensor system of the present invention, it is characterized in that, above-mentioned wireless senser has storage part, this storage portion stores has the physical characteristics and the information converting of the sensor device, in location registration process at above-mentioned data collector terminal, this wireless terminal sends to above-mentioned data collector terminal with above-mentioned physical characteristics and information converting, and this data collector terminal is stored in the information converting storage part with physical characteristics and information converting corresponding to the identification number of wireless senser.
Wireless sensor system of the present invention is characterized in that, above-mentioned information converting comprises: the revisal information of the initial deviation of physical characteristics and physical characteristics.
Wireless sensor system of the present invention is characterized in that, about the sensor device of above-mentioned wireless senser use, the timeliness data of the physical characteristics of obtaining as statistics, store correction coefficient, when registration, the cycle that will proofread and correct and correction coefficient send to above-mentioned data collector terminal.
Wireless sensor system of the present invention, it is characterized in that, above-mentioned wireless senser if this output voltage becomes below the magnitude of voltage of regulation, then will ask the request signal of communicating battery to send to above-mentioned data collector terminal with the output voltage of the battery of some cycles mensuration supply driving power.
According to radio temperature sensor of the present invention, even use the long carrier frequency of ripple, also owing to carry out the design of antenna length in the mode that antenna is accommodated in the container, so can design for a short time with antenna (antenna component), can be freely the function of radio temperature sensor be sealed in the movably small-sized container by the ward.
Moreover, according to radio temperature sensor of the present invention, be pasted at container under the state of determination object object, can carry out the adjustment of the antenna and the impedance matching of the circuit that sends signal.Therefore, can near the maximal value of transmitted power, send all the time, prevent the deterioration of radioactive nature sending signal.
And then, according to radio temperature sensor of the present invention,, separate antenna with the interval of stipulating from container being sticked on the stickup face of the container on the determination object, aforesaid substrate is arranged on said vesse inside.Therefore, can prevent determination object object and capacitive coupling, cut down coupling loss.And the skew of control antenna and the impedance of the signal line of giving the antenna transmission signal can be carried out the good transmission of efficient.
Have again,, the shape of radio temperature sensor is made the roughly size of 500 Japanese yen coins, be i.e. diameter 9mm～27mm, the coin shapes of thickness 5mm～10mm according to radio temperature sensor of the present invention.Therefore, the common ward that is subjected to does not feel awkward yet, sticks on the surface, can carry walking easily, so can further enlarge the scope of measuring body temperature.
Also have,, can realize the antenna length below 1/8 of employed carrier frequency, can increase substantially the LVFS of antenna according to radio temperature sensor of the present invention.
According to radio interface device of the present invention, even use the long carrier frequency of above-mentioned ripple, also because of the mode that can put into antenna in radio interface device, carry out the design of antenna with the LVFS of correspondence, so it is very long that antenna can not expose from equipment, even in small-sized portable terminal such as PDA, also can obtain can not diminish in design the effect of outward appearance.
In addition, according to radio interface device of the present invention, owing to be inserted in the socket of PDA etc. and under the state that is mounted at radio interface device, can carry out the adjustment of the impedance matching of antenna and transmission signal line, so can be all the time near the maximal value of transmitted power, send, can obtain to prevent the effect of the deterioration of radioactive nature to sending signal.
In addition,, be used in the wave filter of signal of the carrier frequency band of communication via prevention, the earth point of high-frequency circuit is connected on the earth point of logical circuit according to radio interface device of the present invention.Therefore, the carrier frequency band that produces at the logical circuit of the circuit of PDA and radio interface device and the high-frequency current of its environs can not be imported in the GND distribution of high-frequency circuit as noise, can obtain to prevent the radiation anti noise.
Moreover, according to radio interface device of the present invention, can realize the antenna length below 1/8 of employed carrier frequency, can increase substantially the LVFS of antenna.Therefore, even also radio interface device can be installed for USB connector etc.
According to wireless sensor system of the present invention, in the mensuration wireless senser that is arranged at the place of measuring environmental information, because not from physical quantity as the measured value of measuring by sensor device, the numerical value of computing environmental information, therefore, can make the formation summary of wireless senser, because can make it general, so can expect a large amount of production effects, can obtain subduing the effect of manufacturing cost.
Also have, according to wireless sensor system of the present invention, because the computing environmental information is come according to the measured value that sends from wireless senser in the data collector terminal, so can corresponding multiple environmental information, can construct system corresponding to various sensor devices, and, can improve the precision of the environmental analysis of measuring the place according to multiple environmental information.
Have again, according to wireless sensor system of the present invention, because when registration, identification number corresponding to wireless senser, the physical characteristics and the information converting of the sensor device of this wireless senser are registered in the information converting storage part, and based on the information that is stored in this information converting storage part, according to measured value computing environmental information, therefore, can easily carry out wireless senser appending with respect to system.
And then, according to wireless sensor system of the present invention, because correction coefficient in each specified period correcting determination value, when registration, be registered in the information converting storage part, carry out the correction of measured value according to this correction coefficient, and also store revisal information, so can easily carry out the revisal of the numerical value of the environmental information after the conversion, can obtain high-precision environmental information.
Description of drawings
Fig. 1 is the concept map of the mounted on surface face of the substrate 10 in the radio temperature sensor 100 of embodiment of embodiments of the present invention 1;
Fig. 2 is the concept map of the back side installed surface of the substrate 10 in the radio temperature sensor 100 of present embodiment;
Fig. 3 (a) is the stereographic map of the radio temperature sensor 100 of present embodiment, (b) is the A-A line sectional view of radio temperature sensor 100;
Fig. 4 is the concept map of an example of the circuit of the radio temperature sensor 100 of expression present embodiment;
Fig. 5 is the block diagram of a configuration example of expression match circuit 8;
Fig. 6 is the chart of the relation of expression reflective power and control voltage;
Fig. 7 is the concept map of expression by the formation of the ground connection distribution of rejection filter 19 connection high-frequency circuits 17 and digital circuit 18;
Fig. 8 is the planimetric map of expression by the antenna component 1a of other embodiments of the present invention;
Fig. 9 is the stereographic map of the antenna component 1a of expression present embodiment;
Figure 10 is the chart of the frequency characteristic of the VSWR of the antenna component 1a of expression present embodiment;
Figure 11 is the chart of the radiation pattern of the antenna component 1a of expression present embodiment;
Figure 12 is the skeleton diagram of the formation of the radio interface device 2-1 of the 1st embodiment of expression embodiments of the present invention 2;
Figure 13 is arranged at the circuit diagram of the configuration example of the impedance adjustment circuit in the radio interface device 2-1 for expression;
Figure 14 is the chart of the relation of expression control voltage of above-mentioned impedance adjustment circuit and reflective power;
Figure 15 is the circuit diagram of the formation of the GND distribution on the substrate in the expression radio interface device 2-1;
Figure 16 is the planimetric map of the radio interface device 2-10 of the 2nd embodiment of expression embodiments of the present invention 2;
Figure 17 is the stereographic map of the radio interface device 2-10 of expression present embodiment;
Figure 18 is the chart of the frequency characteristic of the VSWR of the radio interface device 2-10 of expression present embodiment;
Figure 19 is the chart of the radiation pattern of the radio interface device 2-10 of expression present embodiment;
Figure 20 is the figure of the shape of the USB connector 2-40 of the radio interface device 2-10 of the built-in present embodiment of expression;
Figure 21 is the block diagram of the configuration example of the wireless sensor system of an embodiment of expression embodiments of the present invention 3;
Figure 22 is the block diagram of expression as the configuration example of the temperature sensor of the example of the sensor device 3-3 of Figure 21;
Figure 23 is the precedence diagram of expression to the location registration process flow process of the data collector terminal 3-7 of the wireless senser 3-1 of the wireless sensor system of an embodiment.
Among the figure: 1, the 1a-antenna component, 2-determination part, 3-battery, the 4-sensor part, 5-counter, 6-control part, the 7-sending part, 8-match circuit, 10-substrate, 13-variable capacitance diode, 14-coil, 15-capacitor, the 16-blocking capacitor, 17-high-frequency circuit, 18-digital circuit, the 19-rejection filter, 20-antenna substrate, 21-grounding parts, the 22-loading part, 23-inductor portion, 24-capacitor department, the 25-material, 100-radio temperature sensor, 100a-peristome, 100b-connects airtight face, P-supply terminals, 2-1, the 2-10-radio interface device, the 2-2-antenna component, 2-3-variable capacitance diode, 2-4-coil, 2-5, the 2-6-capacitor, 2-7-PDA, the 2-8-substrate, 2-9-grounding parts (conducting film), 2-11-material, the 2-12-conductive pattern, 2-13A, 2-13B-is provided with conductor, 2-14A, the 2-14B-connection electrode, the 2-15-loading part, the 2-16-inductor portion, the 2-17-capacitor department, 2-21-chip inducer (lumped constant element), 2-22-L word pattern, the 2-23-grounding parts connects pattern, 2-31-chip capacitor, 2-32-are provided with conductor and connect pattern, and the 2-33-supply terminals connects pattern, the 2-40-USB connector, the 2-42-wireless communication part, 2-41-PC connecting portion, R-tie point, the 3-1-wireless senser, 3-2-wireless transmission/acceptance division, 3-3-sensor device, 3-4-storage part, the 3-5-base station, the 3-6-network, 3-7-data collector terminal, 3-8-transformation component, 3-9-information converting storage part, the 3-10-data store.
Embodiment
(embodiment 1)
Below, with reference to the radio temperature sensor 100 of accompanying drawing 1～11 explanation embodiments of the present invention.Fig. 1 is equipped with the concept map of formation of installed surface on surface of substrate 10 of each circuit component of the radio temperature sensor 100 of this embodiment for expression.And Fig. 2 is the concept map of the formation of the parts installation of the installed surface at the back side of expression substrate 10.
Below, as embodiments of the present invention, being subjected to ward's human body surface to paste (or connecting airtight), the radio temperature sensor 100 of measuring this body temperature that is subjected to the ward describes for example.
Understand as Fig. 1 and Fig. 2, on the installed surface of substrate 10, in the field of the periphery predetermined distance of distance substrate 10, do not form mounting core chip antenna 1 on the field of ground connection distribution (GND distribution).And the electrical accessories such as IC that form the circuit of radio temperature sensor 100 are installed on the circuit field that is formed with the ground connection distribution.
Thus, can cut down capacity coupled ratio between antenna component 1 and the ground connection distribution significantly.So can reduce coupling loss, the consumption of the energy that restriction is futile, the high efficiency of the energy in can seeking to communicate by letter.
In addition, determination part 2 is the resistive element (NTC thermistor etc.) of direct determination sensor temperature, is connected on the sensor part 4 by connecting line 2a.Battery 3 is installed on the back side (with reference to Fig. 2) of radio temperature sensor 100, supplies with driving power for each circuit of radio temperature sensor 100.
The size and the shape of Fig. 3 (a) expression radio temperature sensor 100 (container), shape and 500 Japanese yen coins are same, at diameter 9mm～27mm, have taken in (with reference to Fig. 1) such as antenna component 1 or substrates 10 in the Coin shape container of size about thickness 5mm～10mm.
Fig. 3 (b) is the sectional view based on the radio temperature sensor 100 of the line segment A of Fig. 3 (a).
As being understood by this Fig. 3 (b), the circuit of radio temperature sensor 100 and the substrate 10 of antenna component 1 are installed, with (for example paste (or connecting airtight) in the determination object object, be subjected to the ward) the mensuration face connect airtight face 100b, regulation at interval apart from d, that is the distance of spacer chip antenna 1 and determination object object and being set up.
By having this predetermined distance d, thereby the capacitive coupling of antenna component 1 and determination object object can be reduced, and the transmission energy can be cut down.
In addition, determination part 2 is to connect airtight face 100b and fix and dispose to the state of the only outstanding predetermined distance in outside from being formed at.
Thus, determination part 2 directly connects airtight and is being subjected on ward's the human body surface, and not needing by the time, the temperature of integral container becomes the temperature identical with body temperature, mensuration body temperature that just can be correct.So, also can be corresponding to the rapid variation of body temperature, and accurately detected temperatures changes.
Secondly, utilize Fig. 4, be formed at the explanation of the circuit on the substrate 10.Fig. 4 is the block diagram of a configuration example of the circuit of explanation radio temperature sensor 100.
In oscillator, the resistance value according to the determination part 2 that is made of thermistor etc. decides oscillation frequency.Along with the resistance value of determination part 2 changes according to temperature variation, oscillation frequency is corresponding to temperature variation.Thus,, also can detect change according to oscillation frequency along with the resistance value of the determination part 2 of temperature variation even with respect to the variation in voltage of battery 3, and, can carry out stable temperature measuring.
At receiver side, if receive the said determination data, then extract identification number and oscillation frequency, from the table of expression oscillation frequency and temperature relation, read temperature corresponding to oscillation frequency.And, with the temperature of reading as temperature data, in database according to each identification number, with the seasonal effect in time series sequential storage.
And, in radio temperature sensor 100, be set in the control part 6 upper limit of oscillation frequency and the defined threshold of lower limit also passable.For example, if the numerical value of judging measured oscillation frequency is not in the threshold range of upper and lower bound the time, that is, detect the body temperature not in normal range time that is subjected to the ward, also can add the hummer of ringing and be notified to the function that is subjected to ward or ward on every side etc.
The pulse of the oscillator exciting in counter 5 calculating sensors 4 sends to sending part 7 with count value in each specified time limit (for example, 30 minutes), and after after sending count value being reset to " 0 ", rule fixed during the new count value of inside counting.
That is, sensor 4 is with the body temperature (temperature) of determination object, as (for example, NTC (Negative Temperature Coefficient) thermistor etc. the oscillation frequency of) resistance value (physical quantity) outputs to counter 5 based on determination part 2.
Sending part 7 according to said determination data-modulated carrier wave, outputs to match circuit 8 as the RF signal that sends signal.
And when taking in antenna component 1 grade in the container of the diameter 27mm of 500 Japanese yen coins, the size of antenna component 1 is restricted to about 27mm.So, if with employed carrier frequency as faint wireless or specific low-power wireless 300,400,900, the 960MHz frequency band, using the length of antenna is the antenna component 1 of 1/4 wavelength, the length that illustrates below needing.
300MHz 250mm
400MHz 188mm
900MHz 83mm
960MHz 78mm
Therefore, in the present embodiment, for antenna component 1 can be built in the container of diameter 27mm of radio temperature sensor 100, about 300,400,900, the 960MHz frequency band each, design/manufacture the LVFS more than 89%, more than 85%, more than 67%, more than 65%.
Above-mentioned antenna component 1 in order to realize high antenna, the small-sized and high antenna of getting a profit of LVFS on circuit, will receive the resonant circuit of electric wave, and the resonant circuit that is made of inductance composition and capacitive component constitutes.
In addition, the antenna component 1 of present embodiment to be installed a plurality of resonant circuits in order winning high-profit and to be constituted.And inductance composition and capacitive component are electrically connected and the resonant circuit of formation side by side, are electrically connected in series more than 2.
And inductance department has by with the axis being the coil portion that the spiral fashion at center or the conductor that is similar to the angular shape of spiral constitute.The axis of this coil portion unifiedly is about identical linearity at least in adjacent resonant structure, the axis of above-mentioned conductor roughly is contained in plane with respect to this axis tilt around at least one of the part of a circle in.
And the radio temperature sensor 100 of present embodiment has illustrated about using the situation of the long carrier frequency of ripple.At this moment, in the container for the radio temperature sensor 100 of the size of antenna component 1 being put into 500 Japanese yen coins and shape, that is, become length x width in the container that can be built in radio temperature sensor 100, calculate LVFS and carry out Antenna Design in order to make antenna component 1.
But, owing to antenna component 1 is made of inductance composition and capacitive component, so be easy to be subjected to the influence of surrounding environment.That is, when radio temperature sensor 100 dispatches from the factory,, change, exist the situation of radioactive nature deterioration according to the influence of the metal framework of the container of radio temperature sensor 100 etc. with the impedance of the antenna component of the impedance phase coupling of the circuit that sends signal.In order to get rid of the influence of this metal framework, though as long as antenna component 1 is arranged on the place of the metal framework of leaving radio temperature sensor 100, but the method has departed from the original big antenna component of LVFS 1 that utilizes, and is installed in the purpose of radio temperature sensor 100 inside.
Therefore, in the radio temperature sensor 100 of present embodiment, be provided with the match circuit 8 that impedance is adjusted that carries out shown in Figure 5.
This match circuit 8 is connected with blocking capacitor 16 on varicap 13 and capacitor 15 sides that connect arranged side by side, the opposing party is connected with coil 14.And, be connected with the tie point R and the antenna component 1 of varicap 13 and capacitor 15.
At the different contact of impedance (contact R) reflex time, the row ripple is subjected to the influence of reflection wave at the transmission signal (the RF signal of what is called row ripple) from sending part 7 inputs, and the ripple behind capable ripple and the reflection wave has been synthesized in generation in the line.Here it is standing wave, if with the maximal value of the voltage of standing wave | Vmax| and minimum value | likening to of Vmin| is voltage standing wave ratio (VSWR) (VSWR), and VSWR becomes 1 during no reflection events, and the more little reflection of this value is also few more.When the small size antenna of antenna component 1 grade, the VSWR of tie point with about below 3 as benchmark.
Thus, the radio temperature sensor 100 of present embodiment, under the state that is installed on radio temperature sensor 100 grades, match circuit 8 carries out antenna component 1 and sends the impedance adjustment of the circuit of signal.So, can near the transmitted power maximal value, send signal all the time, the deterioration of radioactive nature can be prevented, and receiving sensitivity can be improved.
And, when driving is built-in with the radio temperature sensor 100 of antenna component 1,, be input to high-frequency circuit based on the high-frequency current of the digital signal of digital circuit by GND (grand) distribution.
Its result, the noise that is produced by above-mentioned high-frequency current is overlapped in and sends on the signal sometimes, comprises the transmission ripple of noise contribution (radiation noise) from antenna component 1 radiation.
Especially, if the frequency of above-mentioned noise is present in the carrier frequency band and near, then owing to radiated, so, bring bad influence to the receiving feature of other wireless devices of using same carrier frequency band as strong radiation noise.
But, because the frequency of radiation noise is according to the equipment difference, so at receiver side, be difficult to remove this radiation noise.
Therefore, in the radio temperature sensor 100 of present embodiment, as shown in Figure 7, produce the transmission signal by the modulating wave modulated carrier.And, will be from the high-frequency circuit 17 of antenna component 1 radiation and carry out the GND distribution of the digital circuit 18 that determination data handles, via only to predetermined band (comprise wireless senser when the transmission of data/receptions employed carrier frequency band and near frequency range) rejection filter 19 (or Band elimination wave filter) that passes through of prevention connects.
Promptly, the GND distribution of high-frequency circuit 17, be connected via rejection filter 19 on the GND distribution of radio temperature sensor 100, be not input to the GND distribution of high-frequency circuit 17 of the high-frequency current of carrier frequency band that digital circuit 18 generates and near scope thereof, prevent the radiation noise as noise.
In addition, in the substrate 10 in radio temperature sensor 100, reduced the spatiality coupling (capacitive coupling) of the GND distribution of the GND distribution of digital circuit 18 and high-frequency circuit 17.So, not be used in making respectively up and down of substrate 10, by making these GND distributions have predetermined distance and be formed on the same real estate, thereby capacitive coupling can be reduced, and the radiation noise can be further reduced across rejection filter.
As described above, according to the radio temperature sensor 100 of present embodiment, the touring mensuration that is subjected to the ward and carries out body temperature of ward can will be subjected to ward's temperature data aggregation to get up to collect at the inspection center as in the past.Can reduce ward's labour thus significantly, the time that can obtain to carry out other work.
Moreover, radio temperature sensor 100 according to present embodiment, when carrying out radio communication, by using the specific low-power wireless do not need tight utilization examination or faint wireless 300MHz frequency band carrier frequency to the 960MHz frequency band, thereby can prolong communication distance (for example, the communication distance of hundred meters units).Thus, but the Zone Full in the facility can be covered as communication zone, can detect Anywhere in facility changed by ward's body temperature, and just can compare remote communication by low-yield, can realize low consumpting powerization.
In addition, in the radio temperature sensor 100 of present embodiment, the GND distribution of the high-frequency circuit 17 of driven antenna is connected in the GND distribution of the logical circuit of radio temperature sensor 100 via rejection filter 19.Thus, the carrier frequency that generates in the logical circuit (digital circuit) of radio temperature sensor 100 and the high-frequency current of environs thereof can not be imported into the GND distribution of high-frequency circuit 17 as noise, can prevent the radiation noise.
Secondly, with reference to Fig. 8 and Fig. 9 explanation configuration example (antenna component 1a) by the antenna component 1 of embodiments of the present invention.
This antenna component 1a as Fig. 8 and shown in Figure 9, has: the antenna substrate 20 that is made of insulativity materials such as resins; Be arranged on the surface of antenna substrate 20 and as the grounding parts 21 of the electrically conductive film of rectangle; Be disposed at the loading part 22 on a side the face of antenna substrate 20; Inductor portion 23; Capacitance part 24; Be connected in the supply terminals P on the high-frequency circuit (omit diagram) of the outside that is arranged on antenna component 1a.And, constitute by loading part 22 and capacitor department 23 and adjust the antenna operating frequency, radiate electric wave with the centre frequency of 430MHz.
Loading part 22 for example is made of conductive pattern 34.This conductive pattern with respect to the surface of the material 25 of the rectangular parallelepiped that constitutes by inductive materials such as alumina vertically, form spiral-shaped.
The two ends of this conductive pattern 34, with the mode that conductor 26A, 26B are electrically connected that is provided with of the lip-deep rectangle that is arranged on antenna substrate 20, be connected with connection electrode 27A, the 27B at the back side that is arranged at material 25 respectively.And conductive pattern 34, one ends are electrically connected with inductor portion 23 and capacitor department 24 via conductor 26B is set, and the other end is as the open end.
At this, loading part 22 arranged spaced, so that for example be 10mm as the L1 apart from the distance of the end limit 21A of grounding parts 21, the length L longitudinally 2 of loading part 22 for example is 16mm.
And loading part 22 because physical length ratio antenna action wavelength is 1/4 also short, likens the side of high frequency also into the 430MHz of antenna operating frequency to so become the self-resonant frequency of loading part 22.Therefore, when the antenna operating frequency of antenna component 1a is considered as benchmark, because the self-resonance of can not saying so, so become the antenna of the character different with the helical aerials that carries out self-resonance with the antenna operating frequency.
The inductance value of chip inducer 28 is adjusted to: the resonance frequency with loading part 22 and inductor portion 23 generations becomes the 430MHz as the antenna operating frequency of antenna component 1a.
In addition, it is parallel with grounding parts 21 that L word pattern 29 forms end limit 29A, and length L 3 is 2.5mm.Thus, the physical length L 4 of the antenna element parallel with the end limit 21A of grounding parts 21 is 18.5mm.
The electric capacity of chip capacitor 31, the impedance that is adjusted to supply terminals P can obtain coupling.
Represent that in Figure 10 and Figure 11 so (Voltage Standing Wave Ratio: frequency characteristic voltage standing wave ratio (VSWR)) and horizontal polarization involve the radiation pattern of vertically polarized wave to the VSWR of frequency 400～450MHz of the antenna component 1a that constitutes.
As shown in figure 10, this antenna component 1a frequency is that 430MHz, VSWR are 1.05, and the frequency span of VSWR=2.5 is 14.90MHz.
By using the antenna component 1a of present embodiment, thereby the following antenna length of 1/8 wavelength of employed frequency can be realized, LVFS can be increased substantially.
(embodiment 2)
With reference to Figure 12～20 explanation embodiments of the present invention 2.Radio interface device 2-1 with reference to description of drawings the 1st embodiment.Figure 12 is the block diagram of the formation of the radio interface device 2-1 of this embodiment of expression.In Figure 12, radio interface device 2-1 is described as CF card (registered trademark).The interface of radio interface device 2-1 and PDA2-7 is the interface specification (CFA with radio interface device 2-1; The I/O card version specification of the CF card (registered trademark) of Compact Flash Association) be according to stipulating.
Radio interface device 2-1 is of a size of, for example vertical 42.8mm, horizontal 36.4mm, thickness 3.3mm (specification of the size of above CF card (registered trademark)), and the CF card that inserts PDA2-7 is with using in the socket.
Thus, be installed on the size of the antenna of radio interface device 2-1, be defined with vertical 42.8mm.Therefore, if with employed carrier frequency, use to specific low-power wireless 900,960MHz from faint wireless 300MHz frequency band, then using antenna length is the antenna component 2-2 (with reference to Figure 13) of 1/4 wavelength, needs length shown below.
300MHz 250mm
400MHz 188mm
900MHz 83mm
960MHz 78mm
Therefore, in the present embodiment, but in the mode of built-in chip antenna 2-2 in as the 42.8mm of the linear foot of radio interface device 2-1 cun, with 300,400,900, the 960MHz frequency band each design/be made as LVFS more than 84%, more than 79%, more than 50%, more than 55% respectively.
The antenna component 2-2 that uses in the present embodiment, in order to realize high antenna and the small-sized high-profit antenna of LVFS on circuit, the resonant circuit that is made of inductance composition and capacitive component constitutes the resonant circuit of accepting electric wave.
And the antenna component 2-2 of the radio interface device 2-1 of present embodiment is high-profit in order to win, and is fit into a plurality of resonant circuits and constitutes.And the resonant circuit that inductance composition and capacitive component are electrically connected to form side by side is to be electrically connected in series more than 2.And inductance department has by with the axis being the coil portion that the spiral fashion at center or the conductor that is similar to the angular shape of spiral constitute.At least in adjacent resonant structure, unification is about identical linearity to the axis of this coil portion, and above-mentioned conductor axis roughly is contained in the plane of relative this axis tilt around at least one of a part of enclosing.
Thus, the radio interface device 2-1 of present embodiment, by using the specific low-power wireless do not need tight utilization examination or faint wireless 300MHz frequency band carrier frequency, thereby communication distance can be prolonged, and low consumpting powerization can be sought to the 960MHz frequency band.
And, the radio interface device 2-1 of present embodiment, even when using the long carrier frequency of ripple, also can be so that antenna component 2-2 is accommodated in the mode design chips antenna 2-2 among the radio interface device 2-1.That is, determine LVFS, carry out Antenna Design so that antenna component 2-2 becomes the mode of the length x width of the radio interface device 2-1 that can be built in storage card etc.Thus, radio interface device 2-1 can be not outstanding from PDA2-7 etc. in installment state, even can not impair outward appearance at design aspect in PDA2-7 etc. yet.
But, owing to antenna component 2-2 is made of inductance composition and capacitive component, so be very easy to be subjected to the influence of surrounding environment.That is, when radio interface device 2-1 dispatches from the factory,,, exist the situation of radioactive nature deterioration owing to the influence of the metal framework of PC or PDA2-7 changes with the impedance of the antenna component 2-2 of the impedance matching of the circuit that sends signal.In order to get rid of the influence of this metal framework,, still, depart from the big antenna component 2-2 of original use LVFS and be installed in purpose among the radio interface device 2-1 as long as antenna is set in the place of leaving PC or PDA2-7.
Therefore, in the radio interface device 2-1 of embodiments of the present invention, be provided with impedance adjustment circuit shown in Figure 13.
This impedance adjustment circuit is connected with blocking capacitor 2-6 on a side of the connection arranged side by side of varicap 2-3 and capacitor 2-5, the opposing party is connected with coil 2-4.And, the other end ground connection of coil 2-4.And, be connected with tie point R and the antenna component 2-2 of varicap 2-3 and capacitor 2-5.
By data-modulated the carrier wave of high frequency after transmission signal (the RF signal of row ripple) at the different contact of impedance (contact R) reflex time, the row ripple is subjected to the influence of reflection wave, generates the ripple that has synthesized capable ripple and reflection wave on the line.Here it is standing wave, if with the maximal value of the voltage of standing wave | Vmax| and minimum value | likening to of Vmin| is voltage standing wave ratio (VSWR) (VSWR), and then VSWR becomes 1 during no reflection events, and the more little reflection of this value is also few more.When being the small size antenna of antenna component 2-2 etc., the VSWR of tie point with about below 3 as benchmark.
Not shown control part is measured the VSWR of tie point R, so that this applies control voltage than the mode about becoming for example below 3.Varicap 2-2 has electric capacity according to the characteristic that the control voltage that applies (contrary direction voltage) changes, and adjusts the impedance of circuit thus.The relation of expression reflective power and control voltage in Figure 14.Transverse axis is control voltage (V), and the longitudinal axis is reflective power (VA).
Thus, the radio interface device 2-1 of present embodiment, because above-mentioned control part is installed under the state in installing such as PDA2-7 at radio interface device 2-1, carries out antenna component 2-2 and send the impedance adjustment of the circuit of signal, so can near the transmitted power maximal value, send signal all the time.So, not only can prevent the deterioration of radioactive nature, and can improve receiving sensitivity.
In addition, when radio interface device 2-1 that the radio interface device 2-1 with built-in antenna component 2-2 inserts PDA2-7 (or PC) uses in socket, via GND (grand) distribution, will be input to radio interface device 2-1 based on the high-frequency current of the digital signal of PDA2-7.
Its result, the noise that is produced by above-mentioned high-frequency current is overlapped in and sends on the signal sometimes, contains the transmission ripple of noise composition (radiation noise) from antenna component 2-2 radiation.
Especially, if the frequency of above-mentioned noise is present in the carrier frequency band and near, then owing to radiated, so, bring bad influence to the receiving feature of other wireless devices of using same carrier frequency band as strong radiation noise.
But, because the frequency of radiation noise is according to equipment and difference, so be difficult to remove this radiation noise at receiver side.
Therefore, in the radio interface device 2-1 of present embodiment, produce the transmission signal by the modulating wave modulated carrier, to and send data and receive the GND distribution of the interface circuit of control signal from high-frequency circuit, the PDA2-7 (or PC) of antenna component 2-2 radiation, via only to allocated frequency band rejection filter 19 (or the Band elimination wave filter) connection that (comprising carrier frequency band that card uses and near frequency range thereof), prevention was passed through.
That is, interface circuit directly is connected on the GND distribution of PDA2-7 via the terminal of socket.On the other hand, the GND distribution of high-frequency circuit, be connected in the GND distribution of PDA2-7 via rejection filter, can not be imported in the GND distribution of high-frequency circuit of high-frequency current of carrier frequency band that the circuit of PDA2-7 and interface circuit produce and environs thereof, prevent the radiation noise as noise.
And then, on the substrate in radio interface device 2-1, can reduce the spatiality coupling (capacitive coupling) of the GND distribution of the GND distribution of interface circuit and high-frequency circuit.So, not be used in making respectively up and down of substrate, be formed on the same real estate with the distance of these GND patch bay regulations and by rejection filter, capacitive coupling can be reduced like this, and the radiation noise can be further reduced.
According to the radio interface device 2-1 of present embodiment, as shown in figure 15, the GND distribution of high-frequency circuit is connected in the logical circuit of radio interface device and the GND distribution of PDA2-7 (or PC) via rejection filter.Thus, the carrier frequency band that the logical circuit (interface circuit) of the circuit of PDA2-7 and radio interface device 2-1 produces and the high-frequency current of environs thereof can not be imported into high-frequency circuit GND distribution as noise, can prevent the radiation noise.
Secondly, with reference to Figure 16 and 17, the radio interface device 2-10 of the 2nd embodiment of the present invention is described.
The radio interface device 2-10 of present embodiment for example, is used in the radio interface device of mobile communication wireless devices such as mobile phone and specific low-power wireless, faint wireless etc. wireless device.
This radio interface device 2-10 as Figure 16 and shown in Figure 17, has: the substrate 2-8 that is made of insulativity materials such as resins; Be arranged on the surface of substrate 2-8 and as the grounding parts 2-9 of the electrically conductive film of rectangle; Be disposed at the loading part 2-15 on a side the face of substrate 2-8; Inductor portion 2-16; Capacitor department 2-17; Be connected in the supply terminals P of the high-frequency circuit (omitting diagram) of the outside that is arranged on radio interface device 2-10.And, constitute: adjust the antenna operating frequency by loading part 2-15 and capacitance part 2-16, with the centre frequency radiation electric wave of 430MHz.
Loading part 2-15 for example is made of conductive pattern 2-12, this conductive pattern to the surface of the rectangular-shaped material 2-11 that constitutes by inductive materials such as alumina vertically, form spiral-shaped.
The two ends of this conductive pattern 2-12, with the mode that conductor 2-13A, 2-13B are electrically connected that is provided with of the lip-deep rectangle that is arranged on substrate 2-8, and be connected with connection electrode 2-14A, the 2-14B at the back side that is arranged at material 2-11 respectively.And, conductive pattern 2-12, an end is electrically connected with inductor portion 2-16 and capacitor department 2-17 via conductor 2-13B is set, and the other end is the open end.
At this, loading part 2-15 arranged spaced, so that for example become 10mm as the L1 of the distance of the end limit 2-9A of distance grounding parts 2-9, the longitudinal length L2 of loading part 2-15 for example becomes 16mm.
And loading part 2-15 is because physical length ratio antenna action wavelength is 1/4 also short, so become the 430MHz side of high frequency also of the self-resonant frequency ratio antenna operating frequency of loading part 2-15.Therefore, when the antenna operating frequency of radio interface device 2-10 is considered as benchmark, because the self-resonance of can not saying so, so become and helical aerials antenna of different nature with the self-resonance of antenna operating frequency.
Inductor portion 2-16 has chip inducer 2-21, and adopt following formation: via the lip-deep L word pattern 2-22 that is arranged on substrate 2-8 as the wire conductive pattern, and with conductor 2-13B be set be connected, and connect pattern 2-23 via the lip-deep grounding parts that is arranged at substrate 2-8 equally, and be connected with grounding parts 2-9 as the wire conductive pattern.
The inductance of chip inducer 2-21 is adjusted to: make the resonance frequency based on loading part 2-15 and inductor portion 2-16, become the 430MHz of the antenna operating frequency of radio interface device 2-10.
And L word pattern 2-22 forms: limit 2-22A is parallel with grounding parts 2-9 for end, and length L 3 is 2.5mm.Thus, the physical length L 4 of the antenna element parallel with the end limit 2-9A of grounding parts 2-9 is 18.5mm.
Capacitance part 2-17 has chip capacitor 2-31, and adopt and followingly to constitute: the conductor that is provided with via the lip-deep conductive pattern as wire that is arranged on antenna substrate 2-8 connects pattern 2-32, and with conductor 2-13B be set be connected, and equally the supply terminals via the lip-deep conductive pattern as wire that is arranged on substrate 2-8 connects pattern 2-33, and is connected with supply terminals P.
The impedance that the electric capacity of chip capacitor 2-31 is adjusted to supply terminals P can obtain coupling.
Represent among Figure 18 and Figure 19 that so (Voltage Standing Wave Ratio: frequency characteristic voltage standing wave ratio (VSWR)) and horizontal polarization involve the radiation pattern of vertically polarized wave to the VSWR of frequency 400～450MHz of the radio interface device 2-10 that constitutes.
As shown in figure 18, this radio interface device 2-10 frequency is that 430MHz, VSWR are 1.05, the frequency span of VSWR=2.5 is 14.90MHz.
By using the radio interface device 2-10 of present embodiment, can realize the following antenna length of 1/8 wavelength of employed frequency, can increase substantially LVFS.So, also can be in as USB (the Universal Serial Bus) connector of the standard interface of PC built-in radio interface device 2-10.
Figure 20 (A)～(C) expression is built-in with the shape of USB connector of the radio interface device 2-10 (Figure 16) of present embodiment.USB connector 2-40 is the USB connector corresponding to A series plug.USB connector 2-40 is made of PC connecting portion 2-41 and wireless communication part 2-42.
Figure 20 (A) is the front view (FV) of PC connecting portion 2-41, and Figure 20 (B) is the planimetric map of USB connector 2-40, and Figure 20 (C) is the back view of wireless communication part 2-42.The size L5 of the each several part of USB connector 2-40～L9 can be made as, for example L5=7.5mm, L6=12.0mm, L7=30.0mm, L8=16.0mm, L9=10.0mm.
Because radio interface device 2-10mm shown in Figure 16 is of a size of L1=10mm, L4=18.5mm, wireless communication part 2-42 shape than USB connector 2-40 shown in Figure 20 is fully little, so can be fit into radio interface device 2-10 (Figure 16) in the wireless communication part 2-42 of USB connector 2-40.
In the radio interface device (1,10) of the 1st and the 2nd above-mentioned embodiment,, be provided with and send/receive the antenna that electric wave is used as described in the explanation of each embodiment.And, in radio interface device (1,10), except antenna, also be provided with handle transmission/receiving circuit that signal that antenna receives uses or, be used to carry out interface circuit with the exchanges data of PDA2-7 or PC.So by in radio interface device (1,10), antenna, transmission/receiving circuit, interface circuit being set, even thereby do not install or do not append special function at PDA2-7 etc., as long as radio interface device is inserted in the slot of PDA2-7 etc., just can carries out radio communication.
Even, in the above-mentioned the 1st and the 2nd embodiment, each radio interface device (1,10) has been described respectively, still, be not limited thereto, can also make up both.For example, be applicable to the antenna component 2-2 of Figure 13 by the antenna structure that illustrates with reference to Figure 16 and Figure 17, thereby also can constitute radio interface device.
(embodiment 3)
With reference to Figure 21～23, embodiments of the present invention 3 are described.
Below, with reference to the wireless sensor system of description of drawings one embodiment of the present invention.Figure 21 is the block diagram of expression with the configuration example of embodiment.In the figure, unlimited sensor 3-1 is arranged at a plurality of places, and has: with the measured value that determines with identification number as determination data and by the wireless transmission/acceptance division 3-2 of wireless transmission; Will be corresponding to the physical quantity of environmental informations such as temperature, humidity, volume, all gases concentration as measured value, the sensor device 3-3 that measures; The storage part 3-4 of the identification number of information convertings such as the revisal information of the kind of storage sensor device 3-3, physical characteristics, initial value deviation, physical characteristics and wireless senser.At this, if make sensor device 3-3 as the resistance value of physical quantity (for example as the measured value utilization, thermistor) carries out temperature measuring, then sensor device 3-3 will be as the temperature variation of environmental information, from to resistance value that should temperature variation, computing is as the temperature of environmental information in the temperature characterisitic of sensor.
Therefore, the kind of sensor device 3-3 becomes resistance value, (also can by the look-up table of the relation of expression resistance value and temperature for the general expression of the relation of expression temperature and resistance value for physical characteristics, read temperature this moment) corresponding to resistance value, the initial value deviation is a deviation (skew) for example following at 25 ℃ and above-mentioned general expression, the revisal information of physical characteristics is the augmenting factor with respect to set point of temperature numerical value of being tried to achieve (change the skew of the slope of straight line, or the skew of the curvature of change curve etc.) in this general expression.
In addition, when sensor is different with the installation procedure of sensor device 3-3 etc., also comprise the corrected value of the sensor peripheral circuit that constitutes sensor device.Thus, sensor and sensor device 3-3 in the installation procedure can be managed respectively, effective installation administration can be carried out.
In addition, in storage part 3-4, according to each through the time during (for example, 6 months, 1 year ...) as the correction coefficient of coefficient information storage with respect to the timeliness (timeliness of physical characteristics) of the physical quantity of measuring by sensor device 3-3.This correction coefficient according to the evaluation method that aging (ageing) waits, from the evaluation result of same a plurality of sensors, is envisioned and obtains the timeliness of sensor by statistical treatment.
Base station 3-5 receives the data of the measured value of wireless senser 3-1 by wireless transmission etc., sends to the collection of carrying out environmental information and the data collector terminal 3-7 of analysis via network 3-6.At this, the information communication network of network 3-6 for constituting by specific information communication line, public information communication line and internet etc.Data collector terminal 3-7 has: according to information converting, carry out measured value is transformed to the transformation component 3-8 of computing of the numerical value of environmental information; Corresponding to identification number, store the information converting of the sensor device 3-3 among each wireless senser 3-1 and the information converting storage part 3-9 of correction coefficient; According to each identification number, store the numerical value of environmental information of each wireless senser 3-1 and the data store 3-10 that place (mensuration place) is set of this wireless senser 3-1.
Secondly, with reference to Figure 22, carry out the explanation of the sensor device 3-3 of Figure 21.Figure 22 is the block diagram of the temperature sensor of the example of the sensor device 3-3 of expression Figure 21.In this Figure 22, because oscillator 3-3a decides oscillation frequency according to the resistance value of thermistor 3-3b, so along with the resistance value of thermistor 3-3b changes according to temperature variation, oscillation frequency is corresponding to temperature variation.Counter 3-3c, counting outputs to wireless transmission/receiving portion 3-2 according to (for example, 30 minutes) during each regulation with count value by the pulse of oscillator 3-3a exciting, and after count value is reset to " 0 ", the new count value of inside counting during regulation.Promptly, sensor device 3-3 will be as the temperature of environmental information, as expression thermistor 3-3b (for example, the count value (expression oscillation frequency) of the pulse of the specified time limit of resistance value (physical quantity) NTC (Negative Temperature Coefficient) thermistor etc.) is measured, and the count value of this measured value is outputed to wireless transmission/acceptance division 3-2.This oscillator 3-3a uses variation in voltage and the stable Wien bridge circuit of temperature change.Thus,, also can obtain change, can carry out stable temperature measuring along with the resistance value of the thermistor 3-3b of temperature variation according to oscillation frequency even for power source voltage change.
Secondly, with reference to Figure 21, carry out explanation as the action example of the wireless sensor system of an embodiment.
＜wireless senser 3-1 is to the location registration process of data collector terminal 3-7 〉
Utilize Figure 23 to illustrate that wireless senser 3-1 in the wireless sensor system is to an example of the location registration process of data collector terminal 3-7.Figure 23 is the precedence diagram via the transmission/reception of each data of base station 3-5 and network 3-6 of expression by wireless senser 3-1 and data receipt terminal 3-7.In the following description, the temperature sensor with Figure 22 is used in sensor device 3-3.
When carrying out the location registration process of wireless senser 3-1, the action of indication location registration process in wireless transmission/acceptance division 3-2 of wireless senser 3-1, for example, by pushing the start button of location registration process, thereby wireless transmission/reception 3-2 begins the action to the location registration process of the data collector terminal of wireless senser 3-1 3-7.
Wireless transmission/acceptance division 3-2 will comprise that according to the address that is set in advance among the storage part 3-4 address of wireless senser 3-1 and the register requirement signal of identification number send to predetermined data collection terminal 3-7 (step S1).Data collector terminal 3-7 if judge that the signal that receives is the register requirement signal, judges then whether the identification number that is comprised is set in advance and can registers in data store 3-10.And when being the identification number that can register, data collector terminal 3-7 will represent the authenticate-acknowledge signal that the renewal of registration is handled, and send to wireless senser 3-1 by the address of importing with identification number.On the other hand, when not being the identification number that can register, data collector terminal 3-7 will represent that the authenticate-acknowledge signal of ending location registration process sends to wireless senser 3-1, end location registration process (step S2).
Secondly, wireless transmission/acceptance division 3-2 if receive the authenticate-acknowledge signal that the expression renewal of registration is handled, then reads the information converting and the correction coefficient that are stored among the storage part 3-4, with the information converting and the control information of reading, send to the data collector terminal with the identification number of wireless senser 3-1
3-7 (step S3).At this, the information converting that is sent out is the general expression of relational expression, resistance value (physical quantity) and the temperature of count value (oscillation frequency) in specified time limit of temperature sensor (sensor device 3-3) output at Figure 22 and resistance value, under 25 ℃ of conditions with the augmenting factor of the temperature of the deviation of this general expression, the regulation in general expression, obtained.Correction coefficient be each through the time during (for example, 6 months, 1 year ...) correction coefficient with respect to the timeliness of physical quantity measured among the inherent sensor device 3-3.
And data collector terminal 3-7 is with the information converting and the control information that receive, corresponding to being stored among the information converting storage part 3-9 (step S4) behind the identification number that receives simultaneously.
Then, data collector terminal 3-7 is from information converting storage part 3-9, read information converting and control information corresponding to the identification number of the wireless senser 3-1 that registers, additional affirmation request sends to wireless senser 3-1 (step S5) as the information converting confirmation signal.And, wireless senser 3-1, if receive above-mentioned information converting confirmation signal, just read information converting and proofread and correct information from storage part 3-4, whether identical relatively this information converting that reads and control information and be additional to information converting and control information on the information converting confirmation signal carry out judgement, if detect to identical, to represent that then identical affirmation signal sends to data collector terminal 3-7, on the other hand, if the step 3 (step S6) that then processing turned back to inequality.Next, data collector terminal 3-7 if receive the identical affirmation signal of expression from wireless senser 3-1, then detects information converting and control information and normally is stored among the information converting storage part 3-9, be judged to be each information by normal registration, and determine registration (step S7).
The mensuration of＜environmental information is handled 〉
Then, with reference to Figure 21 and Figure 22, the action example that the mensuration of the environmental information in the wireless sensor system of an embodiment is handled is described.
Wireless senser 3-1 for example per 30 minutes, will send to data collector terminal 3-7 as determination data by wireless transmission/acceptance division 3-2 by count value (measured value) the additional identification number of counter 3-3c output according to each specified time limit.
Next, data collector terminal 3-7 if receive the said determination data, just carries out identification number and whether is stored in judgement among the information converting storage part 3-9.And data collector terminal 3-7 if detect identification number in information converting storage part 3-9, then by transformation component 3-8, reads information converting and control information corresponding to this identification number.
Then, the 3-8 of exchange portion based on the information converting of having read, for example, when being temperature, asks for the resistance value of thermistor 3-3b from the relational expression of count value (being oscillation frequency) and resistance value.And, transformation component 3-8, judge whether surpass the correction of carrying out control information through the time during, when not surpassing, this resistance value directly as numerical value, when surpassing, be multiply by above-mentioned resistance value with correction coefficient, with multiplication result as new resistance value.Then, transformation component 3-8 in the general expression of expression resistance value of information converting and temperature relation, comprises the value of initial value deviation as compensating value, asks for the computing of temperature.And, transformation component 3-8, the augmenting factor that to set by the temperature of each regulation, multiply by the numerical value of the temperature that draws from general expression, ask for computing as the temperature of final environmental information, as the temperature of measuring the place, make it corresponding this operation result, store among the data store 3-10 with the data of measuring date and time with identification number.
And, the 3-8 of exchange portion when being temperature, utilizes the general expression of expression count value and temperature relation, it is also passable directly to ask for temperature from count value, at this moment, judge whether surpass the correction of carrying out control information through the time during, when not surpassing, with this temperature directly as numerical value, when surpassing, correction coefficient be multiply by said temperature, and with multiplication result as new temperature.
And wireless senser 3-1 when sending determination data, measures the output voltage of the battery of supplying with driving power, and apposition sends on this determination data also can.Thus, data collector terminal 3-7, whether the numerical value of judging this output voltage is than the low numerical value of preset threshold, being judged to be is to handle above proceeding in the numerical value of threshold value, be judged to be the numerical value lower than threshold value in, on display part etc., show the information of indication communicating battery.
As other embodiment, in above-mentioned wireless senser 3-1, can also be with wireless transmission/acceptance division 3-2 as the wireless transmission part 2B that only carries out wireless transmission.At this moment, in the moment of location registration process, if will comprise the address of wireless senser 3-1 and the register requirement signal of identification number, by the processing same with an embodiment, send to data collector terminal 3-7, then data collector terminal 3-7 just carries out the processing based on the authentication registration of identification number.Thus, there is no need to be provided with receiving function, so can make the wireless senser of more small-sized low consumpting power.For other action, same with an embodiment.
Even, to be used for realizing that the functional programs of the data collector terminal 3-7 of Figure 21 is recorded in the recording medium of embodied on computer readable, by computer system being read in be recorded in the program in this recording medium and carry out, thereby the collection of carrying out environmental information is also passable.And said here " computer system " comprises hardware such as OS or peripherals.And " computer system " also comprises and has the 3W system that homepage provides environment (or display environment).And so-called " recording medium of embodied on computer readable " is meant, the packaged type medium of floppy disk, photomagneto disk, ROM, CD-ROM etc. is built in the memory storages such as hard disk of computer system.And, so-called " recording medium of embodied on computer readable " also comprises, server as by communication line routers such as networks such as internet or telephone lines time the or become the volatile memory (RAM) of client's inside computer system keeps program in the medium of certain hour.
And said procedure is by transmission medium, or the transmission ripple in the transmission medium, and the computer system that the computer system of this program from be stored in memory storage etc. is transferred to other is also passable.At this, " transmission medium " of transmission procedure be, as the telecommunication circuit (order wire) of networks such as internet (communication network) or telephone line etc., and the medium with function of transmission information.And said procedure also can be used to realize the computer system of above-mentioned functions.And, be stored in suite in the computer system and can realize that the form of above-mentioned functions, so-called differential file (difference program) are also passable.
More than, with reference to description of drawings embodiments of the present invention, still, be not limited to these embodiments about concrete formation, in the scope that does not break away from main points of the present invention, can carry out design alteration etc.
(utilizability on the industry)
Be not only memory, can also be corresponding to PCMCIA (Personal Computer Memory Card International Association) IC-card of specification etc., on the confined substrate of size and dress Fix up an aerial wire in putting.
Claims (5)
1. a radio temperature sensor is characterized in that,
Above-mentioned radio temperature sensor is made of wireless senser and data collector terminal, and this wireless senser is arranged at a plurality of places, and the measured value that is obtained corresponding to environmental information on every side by sensor device also sends; This data collector terminal is arranged at the base station, receives the measured value from this wireless senser, and according to this measured value computing environmental information, collecting the environmental information in above-mentioned place,
Above-mentioned radio temperature sensor has:
Sensor, it is exported environmental information conduct on every side based on the measured value of the physical characteristics of sensor device; With
The wireless transmission part, it will pass through wireless transmission by the determination data that said determination value and recognition data constitute,
Above-mentioned data collector terminal has:
The information converting storage part, it is according to each above-mentioned wireless senser, and storage is used for the measured value of the sensor device of registered wireless senser is transformed to the information converting of environmental information; With
Transformation component, it judges wireless senser from above-mentioned recognition data, according to this physical characteristics and the information converting corresponding to this wireless senser, carrying out the said determination value transform is the computing of environmental information.
2. radio temperature sensor according to claim 1 is characterized in that,
Above-mentioned radio temperature sensor has storage part, store the physical characteristics and the information converting of the sensor device, in location registration process to above-mentioned data collector terminal, this wireless terminal sends to above-mentioned data terminal with physical characteristics and information converting, this data collector terminal with physical characteristics and information converting corresponding to the identification number of wireless senser and be stored in the information converting storage part.
3. radio temperature sensor according to claim 1 is characterized in that,
Above-mentioned information converting comprises the initial deviation of physical characteristics and the revisal information of physical characteristics.
4. radio temperature sensor according to claim 1 is characterized in that,
At the employed sensor device of above-mentioned wireless senser, the timeliness data of the physical characteristics of obtaining as statistics and stored correction coefficient, when registration, the cycle that will proofread and correct and correction coefficient send to above-mentioned data collector terminal.
5. radio temperature sensor according to claim 1 is characterized in that,
Above-mentioned wireless senser is measured the output voltage of the battery of supplying with driving power with some cycles, if below the magnitude of voltage of this output voltage for regulation, then will ask the request signal of communicating battery to send to above-mentioned data collector terminal.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003319357A JP2005085193A (en) | 2003-09-11 | 2003-09-11 | Radio sensor system |
| JP2003319357 | 2003-09-11 | ||
| JP2003328846 | 2003-09-19 | ||
| JP2003338219 | 2003-09-29 | ||
| JP2004206297 | 2004-07-13 | ||
| JP2004226773 | 2004-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004800260910A Division CN100452105C (en) | 2003-09-11 | 2004-09-09 | Radio module, radio temperature sensor, radio interface device, and radio sensor system |
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| CN101358882A true CN101358882A (en) | 2009-02-04 |
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| CNB2004800260910A Expired - Fee Related CN100452105C (en) | 2003-09-11 | 2004-09-09 | Radio module, radio temperature sensor, radio interface device, and radio sensor system |
| CNA2008102109037A Pending CN101358882A (en) | 2003-09-11 | 2004-09-09 | Wireless module,wireless temperature sensor,wireless interface device,and wireless sensor system |
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| CNB2004800260910A Expired - Fee Related CN100452105C (en) | 2003-09-11 | 2004-09-09 | Radio module, radio temperature sensor, radio interface device, and radio sensor system |
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| JP (1) | JP2005085193A (en) |
| CN (2) | CN100452105C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102464020A (en) * | 2010-11-16 | 2012-05-23 | 江苏友邦精工实业有限公司 | Modular frame longitudinal beam |
| CN103026487A (en) * | 2010-07-29 | 2013-04-03 | 株式会社村田制作所 | High-frequency module and communications device |
| CN107405084A (en) * | 2014-12-31 | 2017-11-28 | 蓝色火花科技有限公司 | Temperature recording paster |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007156779A (en) * | 2005-12-05 | 2007-06-21 | Hitachi Ltd | Sensor network system, base station and relay method for sensing data |
| JP5363143B2 (en) | 2009-03-02 | 2013-12-11 | オリンパス株式会社 | Data communication system and receiving apparatus |
| JP5588210B2 (en) * | 2010-03-31 | 2014-09-10 | 株式会社メガチップス | Sensor network system and setting method |
| JP5973786B2 (en) * | 2012-05-25 | 2016-08-23 | ナブテスコ株式会社 | Centralized monitoring system for industrial robots, centralized monitoring program and maintenance system |
| US9870690B2 (en) * | 2013-10-08 | 2018-01-16 | General Electric Company | Methods and systems for a universal wireless platform for asset monitoring |
| KR20180057271A (en) * | 2016-11-22 | 2018-05-30 | 크루셜텍 (주) | Wireless data transmission apparatus including non-contact sensor, host apparatus and information receiving system |
| CN106802196B (en) * | 2017-01-16 | 2023-07-18 | 中国计量大学 | Electronic thermometer buzzer sound detection device and method for automatic verification |
| JP6751062B2 (en) * | 2017-09-13 | 2020-09-02 | 株式会社日立製作所 | Automatic inspection system and automatic inspection method |
| CN109459151B (en) * | 2018-12-06 | 2024-02-20 | 南京信息工程大学 | Device and method for monitoring mass temperature points on line under low-temperature background |
| JPWO2022249346A1 (en) * | 2021-05-26 | 2022-12-01 | ||
| CN113959592A (en) * | 2021-10-21 | 2022-01-21 | 珠海黑石电气自动化科技有限公司 | Antenna configuration method for UHF RFID temperature measurement system of electrical equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3788811T2 (en) * | 1986-11-26 | 1994-04-28 | Terumo Corp | ELECTRONIC CLINICAL THERMOMETER. |
| JP2000005136A (en) * | 1998-06-26 | 2000-01-11 | Nippon Telegr & Teleph Corp <Ntt> | Temperature measuring device and implant |
| JP2000188506A (en) * | 1998-12-22 | 2000-07-04 | Tdk Corp | Antenna system |
| JP2001060841A (en) * | 1999-08-24 | 2001-03-06 | Sony Corp | Antenna device, method for adjusting circuit constant of its impedance matching circuit and portable communication apparatus using them |
| JP2002016418A (en) * | 2000-06-27 | 2002-01-18 | Sony Corp | Electronic equipment |
| JP2003188626A (en) * | 2001-12-19 | 2003-07-04 | Murata Mfg Co Ltd | Antenna integral with module |
-
2003
- 2003-09-11 JP JP2003319357A patent/JP2005085193A/en active Pending
-
2004
- 2004-09-09 CN CNB2004800260910A patent/CN100452105C/en not_active Expired - Fee Related
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103026487A (en) * | 2010-07-29 | 2013-04-03 | 株式会社村田制作所 | High-frequency module and communications device |
| CN102464020A (en) * | 2010-11-16 | 2012-05-23 | 江苏友邦精工实业有限公司 | Modular frame longitudinal beam |
| CN107405084A (en) * | 2014-12-31 | 2017-11-28 | 蓝色火花科技有限公司 | Temperature recording paster |
| CN107405084B (en) * | 2014-12-31 | 2021-11-19 | 蓝色火花科技有限公司 | Body temperature recording patch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1849636A (en) | 2006-10-18 |
| CN100452105C (en) | 2009-01-14 |
| JP2005085193A (en) | 2005-03-31 |
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