CN201142136Y - Anti-interference anti-dither signal collection device for pre-payment type card meter - Google Patents
Anti-interference anti-dither signal collection device for pre-payment type card meter Download PDFInfo
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- CN201142136Y CN201142136Y CNU2007201756098U CN200720175609U CN201142136Y CN 201142136 Y CN201142136 Y CN 201142136Y CN U2007201756098 U CNU2007201756098 U CN U2007201756098U CN 200720175609 U CN200720175609 U CN 200720175609U CN 201142136 Y CN201142136 Y CN 201142136Y
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- tongue tube
- power consumption
- magnet steel
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Abstract
An anti-jamming and anti-dithering signal collector used for a prepayment meter mainly solves the problems that the prior impulse signal can not prevent magnetic disturbance and distinguish the error impulse generated by meter body dithering. The utility model is characterized in that the anti-jamming signal collector includes a magnetic steel (3) arranged on a metering rotary wheel of a mechanical flow meter, and two normally-opened reeds (1 and 2) arranged on the concentric circle with the metering rotary wheel within the magnetic force range of the magnetic steel. The end of the two normally-opened reeds (1 and 2) is respectively connected with two input ends (SENSOR 1 and SENSOR 2) of a microprocessor (U1) with low power consumption via current limiting resistors, and the other end is connected with the same high level output end of the microprocessor (U1) with low power consumption via the current limiting resistors. After being installed on prior prepayment-type civil water, electricity and gas meters, the device can realize accurate measurement by preventing magnetic disturbance and distinguishing the error impulse generated by meter body dithering.
Description
Technical field:
The utility model relates to a kind of device that is used on the pre-payment type card table, specifically relates to a kind of anti-tampering, anti-shake signal pickup assembly.
Background technology:
The metering of civil version water, electricity, gas pre-payment type card table generally is that the acquisition pulse signal measures, and as a rule, the harvester of pulse signal has two kinds of Hall element and tongue tubes.Because the Hall element cost is higher, so the general tongue tube that adopts.Usually adopt in the prior art and go alone the reed pipe metering, under this metering method, there are the following problems: because nature exists a large amount of unpredictable magnetic interferences and the artificial strong magnetic interference of malice, make that going alone reed pipe can't correctly send pulse; In addition, because table body itself may produce mechanical shaking, so at this moment, just might mistake repeatedly send pulse, make the user suffer tremendous loss, that is to say that present this pulse signal acquisition device can not prevent magnetic interference and distinguish out the bursts of error that the shake of table body produces, thereby produce the metering mistake.
The utility model content:
In order to solve the problem that existing pulse signal acquisition device can not prevent magnetic interference and distinguish out the bursts of error of table body shake generation, the utility model provides a kind of anti-tampering, anti-shake signal pickup assembly that is specifically designed to pre-payment type card table, can prevent magnetic interference after this kind device is installed on the existing pre-payment type civil version water, electricity, gas card table and distinguish out the bursts of error that the shake of table body produces, accomplish accurate metering.
The technical solution of the utility model is: this kind is used for the anti-tampering of pre-payment type card table, anti-shake signal pickup assembly, comprise motor valve in low-power consumption microprocessor and the driving instrument supporting with it, hummer, the peripheral drive circuit of display, wherein said anti-tampering signal pickup assembly also comprises a magnet steel that is installed on the mechanical flowmeter metering runner, two are installed in the magnet steel magnetic force scope to be in described metering runner and often open tongue tube on the concentric circumferences, and described two ends of often opening tongue tube are connected to two input ends of low-power consumption microprocessor respectively by current-limiting resistance, and the other end then is connected to the same high level output terminal of low-power consumption microprocessor by current-limiting resistance.
The utlity model has following beneficial effect: because the utility model is that a magnet steel is installed on the metering runner of mechanical flowmeter, in the on-off action scope of magnet steel to tongue tube, often open tongue tube with two of the concentric distributions of runner, in normal use, have only two often to open each closed master chip of tongue tube priority just as once metering.When the shake of table body itself, when promptly having only one often to open the tongue tube closure, low-power consumption microprocessor U1 does not measure, and has therefore distinguished out the bursts of error that produces because of the shake of table body.When external magnetic is disturbed, often open tongue tube closure simultaneously for two, low-power consumption this moment microprocessor U1 program receives signal and is judged as undesired signal, and the drive motor valve cuts out.Hence one can see that, and this device adopts two often to open tongue tube and successively receive magnetic signal on the self-measuring runner, can guarantee accurately to measure, and can prevent to shake, magnetic interference, simple and reliable for structure, with low cost, is suitable for applying.
Description of drawings:
Fig. 1 is an electric hookup of the present utility model.
Fig. 2 is a theory of constitution block diagram of the present utility model.
Fig. 3 is a position view of often opening tongue tube and magnet steel.
Among the figure 1, two of 2-often open tongue tube, the 3-magnet steel, 4-measures runner, U1-low-power consumption microprocessor, J3-prevents deblocking relay, J4-motor valve, J5-display, LS1-hummer.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this kind is used for the anti-tampering of pre-payment type card table, anti-shake signal pickup assembly, comprise motor valve J4 in low-power consumption microprocessor U1 and the driving instrument supporting with it, hummer LS1, the peripheral drive circuit of display J5 and a magnet steel 3 that is installed on the mechanical flowmeter metering runner, two are installed in the magnet steel magnetic force scope to be in described metering runner and often open tongue tube 1 on the concentric circumferences, 2, and described two often opened tongue tube 1, an end of 2 is connected to two input end SENSOR1 of low-power consumption microprocessor U1 respectively by current-limiting resistance, SENSOR2, the other end then are connected to the same high level output terminal of low-power consumption microprocessor U1 by current-limiting resistance.As seen from the figure, the peripheral drive circuit of described low-power consumption microprocessor U1 is made of 7 triodes, wherein, first group of amplifying circuit that connects and composes out valve control signal by three triode P1, P3, P3 successively, what its amplifying signal output terminal was connected to metering meter motor valve J4 opens valve control end TP3, second group connects and composes the amplifying circuit that closes valve control signal successively by other three triode P4, P5, P6, and its amplifying signal output terminal is connected to the pass valve control end TP4 of metering meter motor valve J4; The 3rd group constitutes the amplifying circuit of alerting signal by a triode P7, and its amplifying signal output terminal drives hummer LS1; Above-mentioned three signal input end are introduced by the signal output part on the low-power consumption microprocessor U1.
During real work, magnet steel in this device 3 is installed on the metering runner 4 of mechanical flowmeter, in the on-off action scope of 3 pairs of tongue tubes of magnet steel, with install described two on the concentric circumference of metering runner 4 and often open tongue tube 1,2, the distance of magnet steel and Chang Kai tongue tube and two distances of often opening between the tongue tube are determined by the magnetic field intensity of magnet steel and the sensitivity of tongue tube, with guarantee tongue tube sensitive part and magnet steel over against the time tongue tube reliably closed, and under the action of a magnetic field of magnet steel, have only one often to open effectively closure of tongue tube at synchronization.Be stored in program in the microprocessor U1 by setting, make in normal use, have only two often open tongue tube successively each closure once just as effective metrical pulse signal once.When external magnetic was disturbed, two tongue tubes were closed simultaneously, and the master chip program receives signal and is judged as undesired signal at this moment, and the drive motor valve cuts out.When the shake of table body takes place when, have only one often to open the tongue tube closure, the master chip program receives signal and is judged as mistaking signal at this moment, does not carry out any operation, has realized accurate metering thus.In addition, in order to prevent artificially metering circuit to be destroyed, this device also designs anti-deblocking relay J 3, and when table was opened, anti-deblocking relay J 3 was locked with closure, and under master routine drives, the motor valve will cut out.
Be some scopes and the type selecting of determining in the preferred embodiment below: described low-power consumption microprocessor U1 is the MSP430F415 chip, can abbreviate master chip as.The magnetic field intensity of described magnet steel 3 is 0.5 tesla, described two closed sensitivity of often opening tongue tube 1,2 are at 5 to 30 ampere-turns, described magnet steel 3 goes to described two scopes of air line distance when often opening under the tongue tube 1,2 at 5～8 millimeters, and two air line distance scopes of often opening between the tongue tube 1,2 are 15～20 millimeters.In this example, often open tongue tube 1,2 for two and be connected with 46 pin with 47 pin of master chip respectively by current-limiting resistance, 49 pin of master chip provide a high level often to open the tongue tube output terminal and be connected with two by current-limiting resistance.Anti-deblocking relay J 3 can be open type, an end ground connection, and an other end is connected with 49 pin of master chip by current-limiting resistance; The 17-31 pin of master chip links to each other with LCD display; 34 foot control system disable motor valves of master chip, 35 foot control systems are opened the motor valve, and 44 pin and 45 pin detect the open and close state of motor valve respectively; 32 foot control system hummers of master chip.
By the master chip programming, this device can be realized following process: when normally measuring, metering runner upper magnetic steel turns over when often opening tongue tube 1, often opens 47 pin of tongue tube 1 closed output low level pulse signal to master chip, and master chip is stored this signal; Metering runner upper magnetic steel turns over when often opening tongue tube 2, often open 46 pin of tongue tube 2 closed output low level pulse signals to master chip, master chip detects that the signal in conjunction with earlier stored is judged as once metering behind this signal, deduct a measurement unit by the master chip internal processes from the prepaid amount the inside, finish a subnormal metering.When prepaid amount equalled zero, master chip sent a control signal to display and shows and please speed purchase gas, and the 32 pin output control signal of master chip drives buzzer call and reminds the user, and the 34 pin output control signal of master chip is closed through processing of circuit rear drive motor valve.In magnet steel just rests on a closure function scope of often opening tongue tube, when the table body produces shake, owing to have only this moment one often to open tongue tube and constantly send pulse signal, so can not produce metering.When the external magnetic signal, often open tongue tube 1 and Chang Kai tongue tube 2 closure simultaneously, 47 pin of master chip and 46 pin detect the low level pulse signal simultaneously and are judged as undesired signal, master chip internal processes output this moment control signal driving display shows illegal operation, the 32 pin output control signal of master chip drives buzzer call, and the 34 pin output control signal of master chip is closed through processing of circuit rear drive motor valve.When the people showed for tearing open, anti-deblocking relay J 3 was locked with closure, and this moment, 49 pin and two output terminals of often opening tongue tube of master chip were communicated with ground, was equivalent to two and often opened tongue tube output low level pulse simultaneously to 47 pin and 46 pin of master chip.
Claims (2)
1, a kind of anti-tampering, anti-shake signal pickup assembly that is used for pre-payment type card table, comprise the peripheral drive circuit of motor valve (J4), hummer (LS1), display (J5) in low-power consumption microprocessor (U1) and the driving instrument supporting, it is characterized in that with it:
Described anti-tampering signal pickup assembly comprises that also one is installed in magnet steel (3) on the mechanical flowmeter metering runner, two and is installed in the magnet steel magnetic force scope to be in described metering runner and often opens tongue tube (1 on the concentric circumferences, 2), and described two often opened tongue tube (1,2) a end is connected to two input end (SENSOR1 of low-power consumption microprocessor (U1) respectively by current-limiting resistance, SENSOR2), the other end then is connected to the same high level output terminal of low-power consumption microprocessor (U1) by current-limiting resistance.
2, a kind of anti-tampering, anti-shake signal pickup assembly that is used for pre-payment type card table according to claim 1, it is characterized in that: described low-power consumption microprocessor (U1) is the MSP430F415 chip, the magnetic field intensity of described magnet steel (3) is 0.5 tesla, often open tongue tube (1 for described two, 2) closed sensitivity is at 5 to 30 ampere-turns, described magnet steel (3) goes to described two and often opens tongue tube (1,2) the air line distance scope is at 5～8 millimeters in the time of under, two air line distance scopes of often opening between the tongue tube (1,2) are 15～20 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201756098U CN201142136Y (en) | 2007-09-21 | 2007-09-21 | Anti-interference anti-dither signal collection device for pre-payment type card meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201756098U CN201142136Y (en) | 2007-09-21 | 2007-09-21 | Anti-interference anti-dither signal collection device for pre-payment type card meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201142136Y true CN201142136Y (en) | 2008-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201756098U Expired - Fee Related CN201142136Y (en) | 2007-09-21 | 2007-09-21 | Anti-interference anti-dither signal collection device for pre-payment type card meter |
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| Country | Link |
|---|---|
| CN (1) | CN201142136Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013139166A1 (en) * | 2012-03-21 | 2013-09-26 | 山东潍微科技股份有限公司 | Counting device for using sensing signal to control single-chip computer to start up and stop |
| CN104501886A (en) * | 2014-12-13 | 2015-04-08 | 重庆市山城燃气设备有限公司 | Reed pipe pulse type fluid flow meter metering method |
-
2007
- 2007-09-21 CN CNU2007201756098U patent/CN201142136Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013139166A1 (en) * | 2012-03-21 | 2013-09-26 | 山东潍微科技股份有限公司 | Counting device for using sensing signal to control single-chip computer to start up and stop |
| CN104501886A (en) * | 2014-12-13 | 2015-04-08 | 重庆市山城燃气设备有限公司 | Reed pipe pulse type fluid flow meter metering method |
| CN104501886B (en) * | 2014-12-13 | 2017-09-12 | 重庆市山城燃气设备有限公司 | Tongue tube pulsed fluid meter metering method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081029 Termination date: 20160921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |