CN105206017A - Smart home gas larceny prevention wireless gas meter reading system based on ZigBee - Google Patents
Smart home gas larceny prevention wireless gas meter reading system based on ZigBee Download PDFInfo
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- CN105206017A CN105206017A CN201510524539.1A CN201510524539A CN105206017A CN 105206017 A CN105206017 A CN 105206017A CN 201510524539 A CN201510524539 A CN 201510524539A CN 105206017 A CN105206017 A CN 105206017A
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Abstract
The invention belongs to the technical field of smart home, discloses a smart home gas larceny prevention wireless gas meter reading system based on ZigBee, and aims to provide a ZigBee-based smart home gas larceny prevention wireless gas meter reading system with higher reliability and real-time performance. According to the technical scheme, the system comprises gas meters, a ZigBee wireless communication module, a ZigBee routing module, a ZigBee coordinator, a GPRS module and a central processing unit. Inductor identification circuits in the gas meters transmit collected gas meter information to the ZigBee coordinator through the ZigBee wireless communication module and the ZigBee routing module in sequence, and the ZigBee coordinator transmits received gas meter information data signals to the central processing unit through the GPRS module via a GPRS network. The gas meter reading system is suitable for smart home.
Description
Technical field
The invention belongs to Smart Home technical field, relate to a kind of for the gas meter, flow meter kilowatt meter reading-out system in Smart Home, particularly relate to a kind of for Smart Home and based on the gas meter, flow meter kilowatt meter reading-out system of ZigBee.
Background technology
Along with the development of modernization science and technology, in Smart Home, new requirement be it is also proposed to the meter reading method of gas meter, flow meter, namely require in Smart Home that the meter reading method of gas meter, flow meter and gas meter, flow meter has higher reliability, real-time and convenient data processing, need fundamentally solve existing register one's residence check meter, the trouble brought to user and meter reading personnel of charging, improve the meter reading efficiency to gas meter, flow meter.
In addition, gas meter, flow meter is as a kind of gas metering equipment, and the volume of gas that they are generally used for flowing through gas meter, flow meter is measured.But, along with popularizing of China's combustion gas application, gas meter, flow meter and the various corollary apparatus be applied on gas meter, flow meter have also been obtained and develop rapidly, counter is then the vitals for metering gas consumption on conventional gas table, at present, magnet steel in gas meter counter is generally adopt to be close to coordinate or be fixed in great wheel with glue bonding mode, in actual use, adopt the less stable coordinating assembling mode, magnet steel easily comes off, the mode of glue bonding then adds its production cost and assembly process, and processing technology is difficult to control relatively.
Summary of the invention
Goal of the invention of the present invention is: for prior art Problems existing, a kind of Smart Home anti-theft gas meter wireless kilowatt meter reading-out system based on ZigBee with higher reliability and real-time is provided, and the problem of magnet steel installation less stable in the counter of existing gas meter, flow meter can be solved.
To achieve these goals, the technical solution used in the present invention is:
Based on a Smart Home anti-theft gas meter wireless kilowatt meter reading-out system of ZigBee, comprise gas meter, flow meter, ZigBee wireless communication module, ZigBee routing module, ZigBee telegon, GPRS module and central processing unit; Described gas meter, flow meter is fixedly mounted on body of wall by bracket, described bracket comprises bracket body, described bracket body comprises installation portion and the support portion of bending forming, described installation portion is vertical with support portion to be arranged, described installation portion is provided with some mounting holes, and described support portion is provided with some height adjustment mechanisms; Described gas meter, flow meter comprises housing, counter and the draft tube be separately positioned on housing and escape pipe; The air intake opening place of described enclosure interior is provided with bend pipe, and the outlet side of described bend pipe is hinged with renovates, described in the free end renovated be fitted in the gas outlet of bend pipe, described in the inner side of renovating be fixedly connected with clamping plate, described in renovate be provided with seal between clamping plate; The character wheel group great wheel of described housing is provided with the inductor for responding to gas flow, in described housing corresponding inductor movement locus on certain be a bit provided with inductor identification circuit; Inductor identification circuit in described gas meter, flow meter is electrically connected with ZigBee wireless communication module, described ZigBee wireless communication module is electrically connected with ZigBee routing module, described ZigBee routing module is electrically connected with ZigBee telegon, described ZigBee telegon is electrically connected with GPRS module, and described GPRS module is connected with central processing unit by GPRS network.
As preferred version of the present invention, the driven wheels that described counter comprises counter frame, character wheel group, character wheel group great wheel and is meshed with character wheel group, described counter frame is also provided with colored moving tooth, and described colored moving tooth is meshed with character wheel group great wheel; Described character wheel group great wheel be axially also provided with blind hole, the optional position of described blind hole hole wall is provided with at least one Elastic buckle.
As preferred version of the present invention, described height adjustment mechanism comprises the adjusting bolt be installed on described support portion and the setting nut coordinated with adjusting bolt.
As preferred version of the present invention, described support portion comprises the stringer board and transverse slat integrated with stringer board end that are connected with installation portion one, described stringer board and transverse slat form "T"-shaped structure, the quantity of described height adjustment mechanism is set to three, one of them height adjustment mechanism is installed on described stringer board, two other height adjustment mechanism symmetry is installed in the two ends of transverse slat, and three described height adjustment mechanisms coordinate formation isosceles triangle.
As preferred version of the present invention, described inductor is magnetic patch, and described magnetic patch is installed on the wheel face of character wheel group great wheel; Described inductor identification circuit is the on-off circuit be made up of tongue tube.
As preferred version of the present invention, described counter frame is also provided with driving gear component, and described driving gear component, flower moving tooth corresponding rear end, the front end being arranged on counter frame respectively, described driving gear component and flower moving tooth coaxial rotation.
As preferred version of the present invention, the IC-card read-write equipment described gas meter, flow meter being also provided with IC-card sheet slot and being connected with IC-card sheet slot, described IC-card read-write equipment is electrically connected with central processing unit.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
In the present invention, inductor in gas meter, flow meter and inductor identification circuit are for gathering the gas meter information of respective user, and gas meter information conveyance is delivered to ZigBee telegon to ZigBee wireless communication module, ZigBee routing module, the energy information data-signal that receives is transferred to central processing unit by GPRS module with GPRS network by ZigBee telegon, central processing unit is sending corresponding control command according to systemic presupposition, user's setting or status information, thus improves the real-time of kilowatt meter reading-out system and the reliability of meter reading data.
By arranging inductor and inductor identification circuit can measure the gas gross flowing through gas meter, flow meter in gas meter, flow meter, gas meter, flow meter is made to have stronger practicality, higher real-time, higher data metering precision.
The Elastic buckle that blind hole by the character wheel group great wheel of counter is arranged, the stability that magnet steel is installed in character wheel group great wheel effectively improves, and simply easy for installation.
Air intake opening place in enclosure interior is provided with bend pipe, the outlet side of bend pipe is hinged with renovates, the free end renovated is fitted in the gas outlet of bend pipe, and thus effectively can solve the problem that gas is stolen in gas meter reversal connection by user, amount of leakage is minimum, use reliable, structure is simple, and tenure of use is long, and this apparatus structure is simple, easy for installation, usability is higher.
Because gas meter, flow meter is fixedly installed on body of wall by the installation portion and support portion arranging bending forming, and some mounting holes are set on installation portion, support portion is arranged and coordinates by adjusting bolt and setting nut the height adjustment mechanism formed, regulated by the height and position of adjusting bolt to gas meter, flow meter, ensure that the measuring accuracy of gas meter, flow meter.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas meter, flow meter in the present invention;
Fig. 2 is the structural representation of gas-robbery resistence structure in the present invention;
Fig. 3 is the structural representation of Counter of the present invention;
Fig. 4 is the structural representation of character wheel group great wheel in the present invention;
Fig. 5 is the structural representation of bracket in the present invention;
Fig. 6 is that in the present invention, gas meter, flow meter is installed to the structural representation on body of wall by bracket;
Fig. 7 is structured flowchart of the present invention;
Wherein, Reference numeral is: 1-housing, 2-draft tube, 3-escape pipe, 4-counter, 6-GPRS module, 7-watch window, 8-installation portion, 9-support portion, 10-body of wall, 41-counter frame, 42-character wheel group, 43-driven wheels, 44-flower moving tooth, 45-character wheel group great wheel, 46-blind hole, 461-Elastic buckle, 47-driving gear component, 51-inductor, 52-inductor identification circuit, 81-bend pipe, 82-renovate, 83-clamping plate, 84-seal, 85-cylindrical protrusions, 86-through hole, 87-groove, 88-cylindrical inserts, 89-even hinge block, 810-rotating shaft, 811-pivoted arm, 812-limiting plate, 813-seal groove, 814-mounting bracket, 91-stringer board, 92-transverse slat, 93-adjusting bolt, 94-regulate spiral shell, 801-mounting hole.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
embodiment 1
Based on a Smart Home anti-theft gas meter wireless kilowatt meter reading-out system of ZigBee, this gas meter, flow meter kilowatt meter reading-out system can realize the work of checking meter of the gas meter, flow meter of even multiple residential quarters, residential quarters.This gas meter, flow meter kilowatt meter reading-out system comprises gas meter, flow meter, ZigBee wireless communication module, ZigBee routing module, ZigBee telegon, GPRS module 6 and central processing unit.This gas box is installed in the man of resident family of community, and each gas box correspondence arranges a gas meter, flow meter 2, i.e. single household one gas box one gas meter, flow meter 2.Each gas meter, flow meter 2 correspondence arranges a ZigBee wireless communication module or multiple gas meter, flow meter 2 correspondence arranges a ZigBee wireless communication module.Each ZigBee wireless communication module may correspond to and arranges a ZigBee routing module or multiple ZigBee wireless communication module correspondence arranges a ZigBee routing module.Each ZigBee routing module may correspond to and arranges a ZigBee telegon or multiple ZigBee routing module correspondence arranges a ZigBee telegon.Each ZigBee telegon may correspond to and arranges the corresponding central processing unit of a GPRS module 6, GPRS module.
This gas meter, flow meter is fixedly installed on body of wall 10 by bracket.This bracket comprises bracket body, and this bracket body comprises installation portion 8 and support portion 9, and installation portion 8 and support portion 9 are all by bending forming, and installation portion 8 is mutually vertical with support portion 9.This installation portion 8 is provided with some mounting holes 801, gas meter, flow meter can be fixedly installed on body of wall 10 by this mounting hole 801.This support portion 9 is provided with some height adjustment mechanisms, and this height adjustment mechanism is used for the height of regulating gas table, and gas meter, flow meter level is installed.
This gas meter, flow meter comprises housing 1, counter 4, inductor 51 and inductor identification circuit 52 is provided with in housing 1, this housing 1 is connected with draft tube 2 and escape pipe 3, this draft tube 2, gas meter, flow meter and escape pipe 3 forms air feed path, this housing 1 also offers the watch window 7 for observing character wheel.
The air intake opening place of this housing 1 inside is provided with bend pipe 81, and this bend pipe 81 is an one-time formed bend pipe 81, and the straight-arm port exterior periphery of bend pipe 81 is provided with seal groove 813.Also comprise renovate 82, clamping plate 83 and seal 84, renovate 82 and be hinged with bend pipe 81, the outer top of curved wall port of bend pipe 81 is provided with even hinge block 89, and the rotating shaft 810 of renovating on 82 is connected with even hinge block 89.Renovate 82 for round member, renovate 82 lateral surface centers and be provided with cylindrical protrusions 85, the inside of protruding 85 is provided with through hole 86, clamping plate 83 are round member, the diameter of clamping plate 83 is less than the internal diameter of bend pipe 81, the medial surface centre of clamping plate 83 is provided with spherical crown shape projection, and clamping plate 83 inside circumference limit is provided with chamfering structure, and the lateral surface center of clamping plate 83 is provided with cylindrical inserts 88.Cylindrical inserts 88 on clamping plate 83 is through seal 84 and through hole 86 interference fit of renovating on 82.Sealing 84 is round rubber sealing gasket, and the diameter of seal 84 is greater than the internal diameter of bend pipe 84.Groove 87 is provided with inside renovating 82.Clamping plate 83 are fixedly connected on the inner side of renovating 82, and seal 84 is arranged on to be renovated between 82 and clamping plate 83.Seal 84 is arranged on renovates 82 grooves 87 inside, and lateral surface and the seal 84 of clamping plate 83 are fitted.Curved wall between the straight-arm of bend pipe 81 and even hinge block 89 is provided with limiting plate 812.The curved boom port exterior periphery of bend pipe 81 is provided with ramp structure.Straight-arm and the curved boom transition position outer setting of bend pipe 81 have mounting bracket 814, and the vertical and straight-arm of mounting bracket 814 is arranged.
This inductor 51 is installed in character wheel group great wheel 45, for responding to the gas flow in gas meter, flow meter.Also be provided with inductor identification circuit 52 in housing 1, the movement locus of the corresponding inductor 51 of this inductor identification circuit 52 is arranged.
Inductor identification circuit 52 in gas meter, flow meter is electrically connected with the ZigBee wireless communication module in kilowatt meter reading-out system, and the energy information data-signal after encryption is delivered to ZigBee wireless communication module.The energy information data-signal of user can be delivered to ZigBee telegon by ZigBee routing module by ZigBee wireless communication module successively, the energy information data-signal that receives is transferred to central processing unit by GPRS module 6 with GPRS network by ZigBee telegon, central processing unit is sending corresponding control command according to systemic presupposition, user's setting or status information, thus improves the real-time of kilowatt meter reading-out system and the reliability of meter reading data.In addition, also deciphering module can be set between GPRS module 6 and central processing unit, energy information data-signal after the encryption that can be sent GPRS module 6 by this deciphering module is deciphered automatically, and the energy information data-signal after deciphering is transferred to central processing unit, thus facilitating information about power statistics and the electricity bill control of receiving end, the combustion gas data avoiding the gas meter, flow meter 2 of user are arbitrarily tackled by people and reading information and then reveal the problem of user profile.
By arranging inductor 51 and inductor identification circuit 52 can measure the gas gross flowing through gas meter, flow meter in gas meter, flow meter, gas meter, flow meter is made to have stronger practicality, higher real-time, higher data metering precision; In addition, by the Elastic buckle 461 that the blind hole 46 of the character wheel group great wheel 45 of counter 4 is arranged, the stability that magnet steel is installed in character wheel group great wheel 45 effectively improves, and simply easy for installation.
In addition, when gas meter, flow meter is not ventilated, renovate 82 and naturally to fit under gravity bend pipe mouth; During gas meter, flow meter normal ventilation, gas is renovating 82 jack-up normal ventilation; When gas meter, flow meter reversal connection, this device by the combustion gas cutting before stove be in gas meter, flow meter and gas meter, flow meter after two sections, when stove door is opened, the inflammable gas abrupt release after gas meter, flow meter inside pipeline, in device, pressure reduces rapidly, makes to renovate 2 two ends mineralization pressure differences thus sealing pipeline.As long as so stove door is opened, this device is self-closed under the effect of pipeline gas pressure, thus reaches the effect of counterflow-preventing.This apparatus structure is simple, and easy for installation, usability is higher, can effectively prevent user from stealing the generation of gas behavior.This device efficiently solves the problem that gas is stolen in gas meter, flow meter reversal connection by user very much, and amount of leakage is minimum, and sealing uses reliable, only otherwise suffer artificial destruction, all can effectively prevent gas meter, flow meter user reversal connection from stealing gas within the tenure of use of gas meter, flow meter.
embodiment 2
On the basis of embodiment one, the driven wheels 43 that this counter 4 comprises counter frame 41, character wheel group 42 and is meshed with character wheel group 42, described counter frame 41 is also provided with colored moving tooth 44, described colored moving tooth 44 is meshed with character wheel group great wheel 45, and driven wheels 43 are all arranged on counter frame 41 by counter 4 axle with character wheel group 42.Character wheel group great wheel 45 be axially also provided with blind hole 46, and the optional position of blind hole 46 hole wall is provided with at least one elastic card.The opposite side that the axis that blind hole 46 should be arranged on character wheel group great wheel 45 is meshed with the radial direction of flower moving tooth 44.Character wheel group great wheel 45 blind hole 46 is axially circular, and it is inner for mounting magnetic steel.Flower moving tooth 44 is stirred the first engaged wheel namely stirring driven wheels 43 after character wheel group great wheel 45 rotates a week and is turned over two teeth, and this engaged wheel drives again another character wheel in the character wheel group 42 be meshed with it to turn over a numeral, and cascaded coordination like this realizes counting.And be provided with multiple character wheel in the above-mentioned character wheel group 42 mentioned of the present invention, and the surface of each character wheel group 42 is provided with the numeral of 0 to 9 successively.
embodiment 3
On the basis of embodiment one or embodiment two, this height adjustment mechanism comprises the adjusting bolt 93 be installed on support portion 9 and the setting nut 94 coordinated with adjusting bolt 93.
During use, be first arranged on body of wall 10 by installation portion 8 by gas meter, flow meter, be placed on support portion 9 bottom gas meter, flow meter, making offsets with the top of adjusting bolt bottom gas meter, flow meter coordinates, and after adopting above-mentioned mounting means, the stability that improve gas meter, flow meter installation is higher; Turn adjusting bolt 93, is regulated by the height and position of adjusting bolt 93 pairs of gas meter, flow meters.By arranging said structure, both ensure that the stability that gas meter, flow meter is installed, and gas meter, flow meter having been installed safe and reliable, simultaneously, under the mating reaction of some height adjustment mechanisms, fully can ensure that gas meter, flow meter is arranged on horizontal level, thus ensure that the measuring accuracy of gas meter, flow meter.
embodiment 4
On the basis of above-described embodiment, this support portion 9 comprises stringer board 91 and transverse slat 92, this stringer board 91 connects as one structure with installation portion 8, this transverse slat 92 is one-body molded with the end of stringer board 91 end, and stringer board 91 and transverse slat 92 form "T"-shaped structure, the quantity of height adjustment mechanism is set to three, one of them height adjustment mechanism is installed on stringer board 91, two other height adjustment mechanism symmetry is installed in the two ends of transverse slat 92, and three height adjustment mechanisms coordinate formation isosceles triangular structure on support portion 9.Adopt said structure, transverse slat 92 and stringer board 91 coordinate formation "T"-shaped, make the support effects of support portion 9 better, ensure that the stability that gas meter, flow meter is placed.
embodiment 5
On the basis of above-described embodiment, described inductor 51 is magnetic patch, and described magnetic patch is arranged on the wheel face of described character wheel group great wheel 45, and described inductor identification circuit 52 is the on-off circuits be made up of tongue tube; Whenever character wheel group great wheel 45 rotates a circle, with regard to Close approach once, tongue tube, by magnetic patch effect, is made on-off circuit closed once, is completed measure the volume of gas by counting and data reduction for magnetic patch and tongue tube; It should be noted that, in other embodiments, inductor 51 and inductor identification circuit 52 also can be the metering signal sample circuits based on infrared induction technology or laser induced technology.
embodiment 6
On the basis of above-described embodiment, counter frame 41 is also provided with driving gear component 47, and driving gear component 47 is separately positioned on front end and the rear end of counter frame 41 with flower moving tooth 44, described driving gear component 47 is connected and fixed by axle with flower moving tooth 44.Driving gear component 47 drives flower moving tooth 44 to rotate, then spend moving tooth 44 to stir the first engaged wheel namely stirring driven wheels 43 after character wheel group great wheel 45 rotates a week and turn over two teeth, this engaged wheel drives again another character wheel in the character wheel group 42 be meshed with it to turn over a numeral, and cascaded coordination like this realizes counting.
embodiment 7
On the basis of above-described embodiment, the IC-card read-write equipment described gas meter, flow meter being also provided with IC-card sheet slot and being connected with IC-card sheet slot, described IC-card read-write equipment is electrically connected with central processing unit.
By using the IC-card sheet slot on this gas meter, flow meter, IC-card sheet after supplementing with money is inserted the IC-card sheet slot on gas meter, flow meter by user, thus complete work is supplemented with money to gas meter, flow meter, and supplement with money without the need to going to business hall, what have great convenience for the user purchases gas, also can be gas company simultaneously and reduce outlet, reduce operating personnel, reduce the operation cost of gas company.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. based on a Smart Home anti-theft gas meter wireless kilowatt meter reading-out system of ZigBee, it is characterized in that: comprise gas meter, flow meter, ZigBee wireless communication module, ZigBee routing module, ZigBee telegon, GPRS module (6) and central processing unit; Described gas meter, flow meter is fixedly mounted on body of wall (10) by bracket, described bracket comprises bracket body, described bracket body comprises installation portion (8) and support portion (9) of bending forming, described installation portion (8) is vertical with support portion (9) to be arranged, described installation portion (8) is provided with some mounting holes (81), and described support portion (9) are provided with some height adjustment mechanisms; Described gas meter, flow meter comprises housing (1), counter (4) and the draft tube (2) be separately positioned on housing (1) and escape pipe (3); The air intake opening place of described housing (1) inside is provided with bend pipe (81), the outlet side of described bend pipe (81) is hinged with renovates (82), the described free end renovating (82) is fitted in the gas outlet of bend pipe (81), described inner side of renovating (82) is fixedly connected with clamping plate (83), described in renovate between (82) and clamping plate (83) and be provided with seal (84); The character wheel group great wheel (45) of described housing (1) is provided with the inductor (51) for responding to gas flow, certain on the movement locus of the interior corresponding inductor (51) of described housing (1) is a bit provided with inductor identification circuit (52); Inductor identification circuit (52) in described gas meter, flow meter is electrically connected with ZigBee wireless communication module, described ZigBee wireless communication module is electrically connected with ZigBee routing module, described ZigBee routing module is electrically connected with ZigBee telegon, described ZigBee telegon is electrically connected with GPRS module (6), and described GPRS module (6) is connected with central processing unit by GPRS network.
2. as claimed in claim 1 based on the Smart Home anti-theft gas meter wireless kilowatt meter reading-out system of ZigBee, it is characterized in that: the driven wheels (43) that described counter (4) comprises counter frame (41), character wheel group (42), character wheel group great wheel (45) and is meshed with character wheel group (42), described counter frame (41) is also provided with colored moving tooth (44), and described colored moving tooth (44) is meshed with character wheel group great wheel (45); Described character wheel group great wheel (45) be axially also provided with blind hole (46), the optional position of described blind hole (46) hole wall is provided with at least one Elastic buckle (461).
3., as claimed in claim 1 based on the Smart Home anti-theft gas meter wireless kilowatt meter reading-out system of ZigBee, it is characterized in that: described height adjustment mechanism comprises the adjusting bolt (93) be installed on described support portion (9) and the setting nut (94) coordinated with adjusting bolt (93).
4. as claimed in claim 1 based on the Smart Home anti-theft gas meter wireless kilowatt meter reading-out system of ZigBee, it is characterized in that: described support portion (9) comprise with installation portion (8) stringer board (91) that is connected of one and with the integrated transverse slat in stringer board (91) end (92), described stringer board (91) and transverse slat (92) form "T"-shaped structure, the quantity of described height adjustment mechanism is set to three, one of them height adjustment mechanism is installed on described stringer board (91), two other height adjustment mechanism symmetry is installed in the two ends of transverse slat (92), and three described height adjustment mechanisms coordinate formation isosceles triangle.
5., as claimed in claim 1 based on the Smart Home anti-theft gas meter wireless kilowatt meter reading-out system of ZigBee, it is characterized in that: described inductor (51) is magnetic patch, described magnetic patch is installed on the wheel face of character wheel group great wheel (45); Described inductor identification circuit (52) is the on-off circuit be made up of tongue tube.
6. as claimed in claim 1 based on the Smart Home anti-theft gas meter wireless kilowatt meter reading-out system of ZigBee, it is characterized in that: described counter frame (41) is also provided with driving gear component (47), and described driving gear component (47), flower moving tooth (44) respectively correspondence be arranged on rear end, the front end of counter frame (41), described driving gear component (47) with flower moving tooth (44) coaxial rotation.
7. as claimed in claim 1 based on the Smart Home anti-theft gas meter wireless kilowatt meter reading-out system of ZigBee, it is characterized in that: the IC-card read-write equipment described gas meter, flow meter being also provided with IC-card sheet slot and being connected with IC-card sheet slot, described IC-card read-write equipment is electrically connected with central processing unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510524539.1A CN105206017A (en) | 2015-08-25 | 2015-08-25 | Smart home gas larceny prevention wireless gas meter reading system based on ZigBee |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510524539.1A CN105206017A (en) | 2015-08-25 | 2015-08-25 | Smart home gas larceny prevention wireless gas meter reading system based on ZigBee |
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| CN201510524539.1A Pending CN105206017A (en) | 2015-08-25 | 2015-08-25 | Smart home gas larceny prevention wireless gas meter reading system based on ZigBee |
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Application publication date: 20151230 |