CN104364963A - Wireless device - Google Patents
Wireless device Download PDFInfo
- Publication number
- CN104364963A CN104364963A CN201380031678.XA CN201380031678A CN104364963A CN 104364963 A CN104364963 A CN 104364963A CN 201380031678 A CN201380031678 A CN 201380031678A CN 104364963 A CN104364963 A CN 104364963A
- Authority
- CN
- China
- Prior art keywords
- circuit substrate
- conductor
- metal shell
- supply terminals
- wireless device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2233—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in consumption-meter devices, e.g. electricity, gas or water meters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
Abstract
Provided is a gas meter equipped with a metal chassis (410), a radiating conductor (440) for radiating a radio wave constituting a high-frequency signal, and a circuit board (441) having a power supply circuit (445) for supplying high-frequency power to the radiating conductor (440), wherein the ground of the circuit board (441), i.e., the ground of the power supply circuit (445), is electrically connected to the metal chassis (410) through a conductor wire (443) and a single screw (423). The power supply point (442) for the radiating conductor (440) is situated at an end of the metal chassis (410).
Description
Technical field
The present invention relates to the wireless device for the flow measurement device measured the flow of measured object.
Background technology
In recent years, utilize the use amount being arranged on the flow measurement device measurement gas, electric power, running water etc. of the building in house etc., be imported with the Automatic meter reading system this measurement data being undertaken by radio communication collecting.In this Automatic meter reading system, require small-sized flow measurement device from the viewpoint easily to arrange etc.
As this flow measurement device, such as motion has the scheme (with reference to patent documentation 1) of installing wireless adapter handset at the metal housing surface of gas meter, flow meter (gas meter).The wireless adapter handset recorded in this patent documentation 1 is built-in with substrate and installs shape plate antenna.Substrate is installed in shape plate antenna, and the short-circuit conductor of earthing conductor plate and transmitting (radiation) conductor portion is connected via the Wiring pattern of tellite.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 10-313212 publication
Summary of the invention
The problem that invention will solve
If the metal shell of gas meter, flow meter can be used as send out (instead) to penetrate conductor, then can realize higher antenna performance.But when from time radially flowing through electric current to the position of the supply terminals of antenna in metal shell, anti-phase electric current is cancelled out each other effect each other, so emission effciency is deteriorated.Particularly, when launching conductor and being less than wavelength, emission effciency is significantly deteriorated.
The object of the present invention is to provide a kind of provide effectively utilize the metal shell of flow measurement device, achieve antenna performance improve wireless device.
For solving the method for problem
Wireless device of the present invention, comprising: the metal shell of above-mentioned flow measurement device; Launch the transmitting conductor as the electric wave of high-frequency signal; With the circuit substrate of the power supply circuits had to above-mentioned transmitting conductor supply high frequency electric power, foregoing circuit substrate has the supply terminals by above-mentioned power supply circuits and the electrical connection of above-mentioned transmitting conductor, and above-mentioned supply terminals is positioned at the end of described metal shell.Above-mentioned supply terminals is positioned at the end of above-mentioned metal shell, the deterioration of the emission effciency that above-mentioned negative-phase sequence curent can be suppressed thus to cause.
The effect of invention
According to the present invention, play the effect of the wireless device that the raising achieving antenna performance can be provided.
Accompanying drawing explanation
The figure of structure when Fig. 1 is the inside of the flow measurement device representing the wireless device viewed from front with the 1st execution mode of the present invention.
The figure of structure when Fig. 2 is the flow measurement device representing Fig. 1 from the side.
Fig. 3 is the stereogram of the wireless communication part in the flow measurement device of Fig. 1.
Fig. 4 (a) and (b) represent the concept map of the distribution of the electric current flow through in the earthing conductor corresponding with the position of the earth terminal in the flow measurement device of Fig. 1.
Fig. 5 is the stereogram of the variation of the wireless communication part representing Fig. 3.
The figure of structure when Fig. 6 is the inside of the flow measurement device representing the wireless device viewed from front with the 2nd execution mode of the present invention.
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described.
< the 1st execution mode >
Fig. 1, Fig. 2 and Fig. 3 represent the structure of the gas meter, flow meter of the flow measurement device as the wireless device with the 1st execution mode of the present invention.Fig. 1 is front view, and Fig. 2 is end view, and Fig. 3 is the stereogram of wireless communication part.
The gas meter, flow meter of present embodiment comprises metal shell 201, instrument display part 202 and is arranged on the resin-case 102 on surface of metal shell 201.Be accommodated with wireless communication part in resin-case 102, this wireless communication part is made up of the transmitting conductor 104 of the tabular of the major part as tabular inverted-F type antenna, the circuit substrate 103 with power supply circuits and earthing conductor 107.105 is from circuit substrate 103 to the power supply terminal launching conductor 104, and 106 is launch the short-circuiting terminal between conductor 104 and circuit substrate 103, and 108 is the earth terminals between circuit substrate 103 and earthing conductor 107.
Circuit substrate 103 is such as two sides copper-clad substrate, is provided with power supply circuits, control circuit etc. in substrate front side.Launch conductor 104 from the front of circuit substrate 103 with separating certain intervals with circuit substrate 103 configured in parallel.Power supply terminal 105 configures orthogonally with the direction, face of launching conductor 104, and one end is electrically connected with the end of the power supply circuits be configured on circuit substrate 103 by circuit substrate 103, and the other end is electrically connected with the end of launching conductor 104.Short-circuiting terminal 106 is same with power supply terminal 105, and configure orthogonally with the direction, face of launching conductor 104, one end is electrically connected with the ground connection formed by copper foil pattern on circuit substrate 103, and the other end is electrically connected with transmitting conductor 104.
Earthing conductor 107 is in the rear side of circuit substrate 103 and circuit substrate 103 configured in parallel.Earth terminal 108 configures orthogonally with the direction, face of earthing conductor 107, and one end is electrically connected with the ground connection formed by copper foil pattern on circuit substrate 103, and the other end is electrically connected with the end of earthing conductor 107.The position that circuit substrate 103 and the link position of earth terminal 108 are configured to be connected from short-circuiting terminal 106 with circuit substrate 103 is spaced apart.
By launching the wireless communication part that forms of conductor 104, circuit substrate 103 and earthing conductor 107, be positioned at power supply terminal 105 in the internal configurations of resin-case 102 on the direction of the end of metal shell 201.Now, earthing conductor 107 and metal shell 201 are configured to close, and thus, electromagnetic coupled occurs for earthing conductor 107 and metal shell 201, so metal shell 201 and earthing conductor 107 can be considered as same current potential high frequency.That is, metal shell 201 is as the landing operation of tabular inverted-F type antenna.Thus, in small-size wireless terminal, also can guarantee larger antenna ground area, so higher emission effciency can be realized.
Fig. 4 (a) and Fig. 4 (b) is the concept map of the distribution representing the electric current flowed in the earthing conductor 107 corresponding to the position of earth terminal 108.In Fig. 4 (a), earth terminal 108 is positioned at the central authorities of earthing conductor 107, so anti-phase current canceling effect each other.Therefore, emission effciency deterioration.In Fig. 4 (b), the mode earth terminal 108 as present embodiment is positioned at the end of earthing conductor 107, so do not produce anti-phase electric current, can suppress the deterioration of emission effciency.In addition, the distribution for the electric current flowed in the transmitting conductor 104 corresponding with the position of power supply terminal 105 is alternatively same.
Fig. 5 represents the wire reverse L type antenna of the variation of the wireless communication part as Fig. 3.In Fig. 5,301 is the transmitting conductor of wire, and 302 is from circuit substrate 103 to the supply terminals launched conductor 301 and power.In this case, circuit substrate 103 also has supply terminals 302 in the end of this circuit substrate 103.In addition, wireless communication part is configured in supply terminals 302 and is positioned on the direction of the end of metal shell 201.In addition, earthing conductor 107 is connected with the earth terminal 108 of circuit substrate 103 near supply terminals 302.
< the 2nd execution mode >
Fig. 6 is the front view of the structure of the gas meter, flow meter of the flow measurement device represented as the wireless device with the 2nd execution mode of the present invention.
The gas meter, flow meter of present embodiment comprises: the metal shell 410 be connected with pipeline 412; With the resin-case 422 on surface being arranged on this metal shell 410.Metal shell 410 is built-in with the transducer (not shown) measured gas flow.In resin-case 422, be configured with measurement circuit substrate 427, battery 428, launch conductor 440 and wireless communication circuit substrate 441.Resin-case 422 is fixed on the surface of metal shell 410 by the screw 423 ~ 425 of conductivity.
Measurement circuit substrate 427 is configured in the top center in resin-case 422, wireless communication circuit substrate 441 is configured in the lower end in resin-case 422, and the battery 428 with metal terminal configures from wireless communication circuit substrate 441 as far as possible with leaving.Measurement is connected by distribution 431 with between circuit substrate 427 with wireless communication circuit substrate 441, is connected between battery 428 with wireless communication circuit substrate 441 by distribution 429.
The power supply circuits 445 being supplied to by high-frequency signal and launching conductor 440 are mounted with at wireless communication circuit substrate 441.The supply terminals 442 launching conductor 440 power supply is positioned to the end of wireless communication circuit substrate 441.In addition, the ground connection of ground connection, the i.e. power supply circuits 445 of wireless communication circuit substrate 441 is electrically connected with metal shell 410 via wire 443 and 1 screw 423 at bonding station 444.Thus, metal shell 410 becomes roughly the same current potential with the ground connection of power supply circuits 445, and consequently, the metal shell 410 with wider area plays function as ground connection.The bonding station 444 of preferred wire 443 and the ground connection of wireless communication circuit substrate 441, wire 443 and screw 423, be configured in the vicinity of supply terminals 442 and be configured on the direction contrary with launching conductor 440 relative to supply terminals 442.
Launch conductor 440 using the high-frequency signal after being modulated by transtation mission circuit as wave transmission, or the electric wave (high-frequency signal) accepted from outside be delivered to the receiving circuit it being carried out to demodulation.The transmitting conductor 440 of present embodiment forms wire reverse L type antenna, has thin clavate shape, is formed by conductive materials such as copper.Launch the length of conductor 440, be set as λ/4 when the wavelength of the high-frequency signal as wireless signal is λ.
The cardinal extremity launching conductor 440 is connected at the efferent of supply terminals 442 with wireless communication circuit substrate 441.Launch conductor 440 to be positioned at the position of leaving metal shell 410 as far as possible and the mode kept off as far as possible of each several part launching conductor 440, with the mode bending of expansion in the inner space of resin-case 422.
With the discussion that Fig. 4 (a) and Fig. 4 (b) illustrated, be also applicable to the distribution of the electric current flowed in the metal shell 410 of the grounding connection with wireless communication circuit substrate 441 by screw 423.That is, when screw 423 is positioned at the central authorities of metal shell 410, anti-phase current canceling effect each other, so emission effciency is deteriorated.But, if the mode of present embodiment is when the end of metal shell 410 is configured with screw 423, do not produce anti-phase electric current, so the deterioration of emission effciency can be suppressed.
In addition, substitute use screw 423 with the electrical connection of metal shell 410, the ground area (ground area) of the technology of above-mentioned earthing conductor, wireless communication circuit substrate 411 also can be utilized as earthing conductor.This earthing conductor to utilize the state that resin-case 422 insulate from metal shell 410 to configure, is electrically connected with the ground connection of wireless communication circuit substrate 441 between wireless communication circuit substrate 441 and metal shell 410 near supply terminals 442.
In addition, except the battery 428 with metal terminal, there is the electrolytic capacitor of metal shell etc. also preferably as far as possible away from supply terminals 442.
In addition, in the above-mentioned 1st and the 2nd execution mode, describe tabular inverted-F type antenna and wire reverse L type antenna, but be not limited to these antenna shape.Can be such as tabular dipole antenna, coil antenna, meander line antenna etc.
Utilizability in industry
As mentioned above, wireless device of the present invention is useful as the wireless device of the raising achieving antenna performance.
The explanation of Reference numeral
102 resin-cases
103 circuit substrates
104 launch conductor
105 power supply terminals
106 short-circuiting terminals
107 earthing conductors
108 earth terminals
201 metal shells
202 instrument display parts
301 launch conductor
302 supply terminals
410 metal shells
412 pipelines
422 resin-cases
423 ~ 425 screws
427 measurement circuit substrates
428 batteries
429 distributions
431 distributions
440 launch conductor
441 wireless communication circuit substrates
442 supply terminals
443 wires
444 bonding stations
445 power supply circuits
Claims (5)
1. a wireless device for flow measurement device, is characterized in that, comprising:
The metal shell of described flow measurement device;
Launch the transmitting conductor as the electric wave of high-frequency signal; With
There is the circuit substrate of the power supply circuits to described transmitting conductor supply high frequency electric power,
Described circuit substrate has the supply terminals by described power supply circuits and the electrical connection of described transmitting conductor,
Described supply terminals is positioned at the end of described metal shell.
2. wireless device as claimed in claim 1, is characterized in that:
Described circuit substrate has described supply terminals in the end of this circuit substrate.
3. wireless device as claimed in claim 1, is characterized in that:
The earthing conductor configured with the state insulated with described metal shell is also provided with between described circuit substrate and described metal shell,
Described earthing conductor is electrically connected with the earth terminal of described circuit substrate near described supply terminals.
4. wireless device as claimed in claim 1, is characterized in that:
Described metal shell is electrically connected with the earth terminal of described circuit substrate near described supply terminals.
5. wireless device as claimed in claim 1, is characterized in that:
Also comprise the battery be electrically connected with described circuit substrate,
Described battery configures from described supply terminals with leaving.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-135692 | 2012-06-15 | ||
| JP2012135692 | 2012-06-15 | ||
| PCT/JP2013/003534 WO2013187013A1 (en) | 2012-06-15 | 2013-06-05 | Wireless device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104364963A true CN104364963A (en) | 2015-02-18 |
Family
ID=49757859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380031678.XA Pending CN104364963A (en) | 2012-06-15 | 2013-06-05 | Wireless device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2863474A4 (en) |
| JP (1) | JPWO2013187013A1 (en) |
| CN (1) | CN104364963A (en) |
| WO (1) | WO2013187013A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013012041B4 (en) * | 2013-07-18 | 2015-03-26 | Diehl Metering Systems Gmbh | Data transmitter of a measurement data acquisition device |
| TWI671945B (en) * | 2015-04-09 | 2019-09-11 | 英屬開曼群島商鴻騰精密科技股份有限公司 | Antenna and antenna assembly |
| US9865926B2 (en) * | 2015-09-02 | 2018-01-09 | Qualcomm Incorporated | Low angle radiating shorted half patch antenna |
| JP7147355B2 (en) * | 2018-08-13 | 2022-10-05 | セイコーエプソン株式会社 | Electronics |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09232841A (en) * | 1996-02-28 | 1997-09-05 | Matsushita Electric Ind Co Ltd | Method for antenna layout |
| CN1778017A (en) * | 2003-04-24 | 2006-05-24 | 旭硝子株式会社 | Antenna device |
| WO2012070242A1 (en) * | 2010-11-25 | 2012-05-31 | パナソニック株式会社 | Wireless device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10313212A (en) | 1997-05-12 | 1998-11-24 | Matsushita Electric Ind Co Ltd | Board mount plate antenna |
| JP5061689B2 (en) * | 2006-04-10 | 2012-10-31 | 日立金属株式会社 | ANTENNA DEVICE AND MULTI-BAND WIRELESS COMMUNICATION DEVICE USING THE SAME |
| JPWO2008020562A1 (en) * | 2006-08-17 | 2010-01-07 | 株式会社東芝 | Electronics |
| JP2010278750A (en) * | 2009-05-28 | 2010-12-09 | Panasonic Corp | Portable wireless device |
| ES2758924T3 (en) * | 2012-03-29 | 2020-05-07 | Panasonic Corp | Flow volume measuring apparatus |
-
2013
- 2013-06-05 JP JP2014520907A patent/JPWO2013187013A1/en active Pending
- 2013-06-05 CN CN201380031678.XA patent/CN104364963A/en active Pending
- 2013-06-05 WO PCT/JP2013/003534 patent/WO2013187013A1/en active Application Filing
- 2013-06-05 EP EP13804999.4A patent/EP2863474A4/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09232841A (en) * | 1996-02-28 | 1997-09-05 | Matsushita Electric Ind Co Ltd | Method for antenna layout |
| CN1778017A (en) * | 2003-04-24 | 2006-05-24 | 旭硝子株式会社 | Antenna device |
| WO2012070242A1 (en) * | 2010-11-25 | 2012-05-31 | パナソニック株式会社 | Wireless device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2013187013A1 (en) | 2016-02-04 |
| WO2013187013A1 (en) | 2013-12-19 |
| EP2863474A4 (en) | 2015-05-27 |
| EP2863474A1 (en) | 2015-04-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150218 |
|
| RJ01 | Rejection of invention patent application after publication |