CN2510832Y

CN2510832Y - Intelligent gas meter

Info

Publication number: CN2510832Y
Application number: CN 01274685
Authority: CN
Inventors: 张文成; 肖开祥; 张晓华; 吕文孝; 陈义立
Original assignee: ZHONGHUAN SYSTEM ENGINEERING TIANJIN CITY LLC; TIANJIN YUMIN FUEL GAS METER TOOL CO Ltd
Current assignee: ZHONGHUAN SYSTEM ENGINEERING TIANJIN CITY LLC; TIANJIN YUMIN FUEL GAS METER TOOL CO Ltd
Priority date: 2001-12-27
Filing date: 2001-12-27
Publication date: 2002-09-11
Anticipated expiration: 2011-12-27

Abstract

The utility model relates to a gas measure instrument, in particular to a civil intelligent gas-meter. The utility model comprises a meter body, a top cover and a counter box. The features of the utility model include: the top cover is provided with a control board, an inclination alarm sensor, an alarm sensor featuring antimagnetic, a cover opening alarm sensor and a control box composed of a battery box. The control box is provided with an alarm lamp and jacks which are inserted into the battery box. The top cover is provided with a control valve. A Hall element alarm sensor with copper sleeve packaging is inserted in the counter box while a magnet is stuck to a character wheel in the counter box. The technological scheme not only makes the utility model provided with a control function of theft-proof, but also improves the accuracy and reliability of gas measurement and long distance data transmission. The intelligent gas meter can alarm automatically when the gas is being stolen and meanwhile turn off the control valve so that the gas is cut off. Therefore, the utility model has a strong practicability for changing the loss situation of unbalanced supply and marketing demands in gas industry.

Description

The intelligence gas meter

(1) technical field

The utility model relates to a kind of gas metering utensil, particularly is applicable to civilian intelligent gas meter.

(2) background technology

For a long time, a big problem of the puzzlement gas industry supply and marketing rate that is exactly combustion gas, promptly can not guarantee combustion gas normally use and to stealing the control problem of gas.At present, the gas meter of prior art can only solve the meterage problem, carries out control and can not artificially steal gas to the user, and promptly gas meter does not have control device, therefore, makes the coal gas industry be in the unbalanced loss situation of supply and marketing for many years always.In addition, the employing tongue tube sensor that the counting remote transmission device of prior art has, but because of its poor anti jamming capability, counting is inaccurate, easier stolen gas.

(3) summary of the invention

In view of there are the problems referred to above in prior art, the utility model provides a kind of can upload and can control the intelligent gas meter of stealing gas by accurate counting.It is to be the table body (1) of one by dress, top cover (2) sum counter box (3) is formed, it is characterized in that top cover (2) is equipped with by control panel (8) on outer, the inclination alarm sensor, antimagnetic alarm sensor, the control enclosure (4) of uncapping alarm sensor and battery case (14) formation and fixing by screw (16), there is the battery case jack (18) of an insertion battery case (14) at the outer right flank rear portion of control enclosure (4), the positive middle aperture that has of control enclosure (4), the alarm lamp (9) that is made of light emitting diode is housed in the hole, the operation valve (5) of and rubber ring (7) sealing fixing by screw (6) is housed in the top cover (2), there is a threaded hole (11) the outer upper end of counter box (3), insert in this hole by the hall element sensor (10) that is threaded the copper sheathing encapsulation, on the character wheel (13) in the counter box (3) aperture is arranged, be stained with magnet (12) in this hole, a teletransmission cable (15) (shown in Figure 2 as Fig. 1) that also seals with rubber ring (17) by control enclosure (4) is drawn on the right side of control panel (8).It is the electric battery that the dry cell polyphone of 1.5V constitutes that battery case (14) lining is equipped with by the every joint of four joints.Control panel (8) by CPU (model is 87LPC764), count pulse circuit, motor-drive circuit, reset circuit, secret key circuit, upload interface circuit, power circuit, warning circuit and the alarm lamp circuit constitutes, and be provided with six connector: J1 of J1-J6 and link to each other with supplying cell; J2 links to each other with inclination alarm sensor, antimagnetic alarm sensor, leakage alarm sensor and the alarm sensor of uncapping; J3 is the secret key socket; J4 and host computer upload broken string, upperly drive valve, report to the police upload, VDD ' power supply, GND, counting upload and link to each other; J5 links to each other with break alarm in the machine with operation valve; J6 links to each other (as shown in Figure 3) with alarm lamp.Because the utility model has been taked technique scheme, therefore, when intelligent gas meter is artificially tilted (angle is greater than 45 °), counter can measure mistake, is robber's gas, and the contact of the alarm sensor that tilts this moment can be closed, this signal inserts the P0.0 mouth of CPU by 1 pin of connector J2, after CPU receives signal, can be uploaded to host computer to of the P1.0 mouth output of this alerting signal through resistance R 5, triode after isolating by CPU; When artificial will be than big magnet during near the counter box, also can cause counting inaccurate, be robber's gas, this moment the antimagnetic alarm sensor closing of contact, 2 pin by connector J2 insert the P0.0 mouth of CPU, after CPU receives signal, by the P1.6 mouth this alerting signal output are uploaded; If the people when opening the lid (control enclosure, counter box), is robber's gas, the whichever lid is opened, the uncap this moment closing of contact of alarm sensor, and 4 pin by connector J2 insert the P0.0 mouth of CPU, after CPU receives signal, upload alerting signal by the output of P1.6 mouth; If at the indoor gas leakage alarm sensor (by user's autogamy) that is equipped with, when gas leakage takes place, the junction closure of leakage alarm sensor, this signal inserts the P0.0 mouth of CPU by 3 pin of connector J2, after CPU receives signal, upload alerting signal by the output of P1.6 mouth, in addition, the counting pulse signal that 3 pin by connector J6 insert inputs to the P0.3 mouth of CPU, CPU can calculate the consumption of combustion gas by calculating, if unusual big flow has illustrated leakages such as sebific duct fracture, this also is a kind of leakage alarm, after CPU detects, upload alerting signal by P1.6 mouth output, more than after any warning takes place in several warnings, CPU can pass through P1.4, P1.2, P1.3, mouthful closed control valve, and light alarm lamp on the control enclosure.When the line of uploading line or operation valve and control panel is artificially cut off, be robber's gas, 2 pin or 2 pin of the J5 P0.5 mouth that insert CPU of this signal by connector J4 after CPU receives this signal, uploaded alerting signal by P0.2 mouth or P1.6 mouth by the 4 pin output of connector J4.

In sum, take place as long as have to report to the police, CPU all can upload alerting signal, closed control valve (in the machine break alarm can not closed control valve) simultaneously, combustion gas this moment can not be used, and alarm lamp is glittering, and alarm lamp picks out by 1 pin of J6, P1.7 mouth control by CPU, when report to the police taking place, the bright 0.1-0.2 of alarm lamp second, extinguish 1-2 second and glimmer, after the alarm release, alarm lamp extinguishes.If open operation valve again, must insert connector J3 with secret key (password), insert CPU P0.6 and P0.7 mouth, receive the signal of secret key as CPU after, can open operation valve.In addition, also can send instruction by host computer and open operation valve to CPU by 2 pin of connector J4.Of the present utility model is by the positive displacement principle with gas metering, and the gas quantity of use is converted to the gas quantity that the rotation of character wheel is passed through with expression.For realizing the counting teletransmission, on the character wheel of corresponding precision, a small magnet is installed (as precision 0.1m ³, then on 0.01 character wheel, install), hall element sensor is installed in place near this character wheel; When character wheel rotated a circle, hall element sensor sent an electric impulse signal, and each electric impulse signal is represented 0.1m ³, 3 pin of this signal by connector J6 on the control panel insert the P0.3 mouth of CPU and 5 pin by connector J4 are uploaded to host computer.Because counting remote transmission device of the present utility model has partly adopted the strong hall element sensor of antijamming capability, accuracy and reliability have therefore been improved, the serviceable life of guaranteeing gas meter to gas metering, counting teletransmission.

The utility model is tight anti-explosion formula, little electric current (below the 35mA), low-voltage (below the 6V) what install in the top cover by direct current generator and valve sets all-in-one-piece operation valve, and its performance is safe and reliable.It links to each other with the control panel of control enclosure by a quad, and wherein two is signal wire, and one is alarming line in the machine, and one is ground wire; When circuit by power supply VCC, VDD energized, after sending high signal to IN1, motor just changes, i.e. closed control valve; And after IN2 sent high signal, operation valve was promptly opened in the motor counter-rotating.Its output signal is received on the motor by connector J6.In order to economize on electricity, be provided with relay D1, diode D2 is the relay holding circuit of releasing.When CPU P1.4 sent low signal, triode N2 closed, and open 2 contacts of relay D1, and VCC, VDD cut off, and U3 does not power up, so not power consumption.When needs changed the operation valve state, CPU sent high signal by the P1.4 mouth, the N2 conducting, and the D1 adhesive, VCC, VDD connect, and U3 gets electric, can use.

This shows that the utility model has not only solved the control problem of the user artificially being stolen gas, and improved accuracy and reliability gas metering and counting teletransmission.When the user artificially stole gas, intelligent gas meter was capable of automatic alarm, the while closed control valve, and at this moment, combustion gas can not be used.In addition, because the utility model has adopted the design of little power consumption, gas meter can also be battery-powered, owing to have above advantage, therefore gas industry is improved the unbalanced loss situation of supply and marketing has very big practicality.

(4) description of drawings

Fig. 1 is the utility model structural representation, and book extract accompanying drawing as an illustration.

Fig. 2 is the right view of Fig. 1.

Fig. 3 is the utility model theory diagram.

Fig. 4 is the utility model control panel electrical schematic diagram.

Wherein: (1) table body (7) rubber ring (13) character wheel

(2) top cover (8) control panel (14) battery case

(3) counter box (9) alarm lamp (15) teletransmission cable

(4) control enclosure (10) hall element sensor (16) screw

(5) operation valve (11) threaded hole (17) rubber ring

(6) screw (12) magnet (18) battery case jack

(5) embodiment

Describe the formation of each several part circuit and the annexation of components and parts in detail below with reference to Fig. 4:

The single-chip microcomputer (87LPC764) that the utility model adopts is a kind of 80C51 modified CPU, and it has increased WDT house dog, I that the user wants ²C bus, 2 analog quantity comparers, electrification resets detect and the under-voltage reset detection, guarantee that I/O mouth drive current reaches 20mA, and travelling speed is 2 times of standard 80C51, and reliability of itself and Electro Magnetic Compatibility are fabulous.

Count pulse circuit of the present utility model is made of hall element sensor; Encapsulation hall element sensor copper sheathing upper end is porose, and the counting pulse signal line is drawn in the Access Control box through the hole.

Motor-drive circuit is made of integrated circuit U3 (M54544AL), resistance R 3, R9, capacitor C 4, C5, triode N2, relay D1 and diode D2; U3 is one and has the integrated circuit that direct current generator drives function; Wherein, 1 pin and 9 pin of U3 join, and link on the contact of relay D1 again with after the positive pole of capacitor C 5 is connected; One end of 2 pin of U3 and 8 pin and resistance R 3, the negative pole of capacitor C 4 join, and the positive pole of the other end of resistance R 3 and capacitor C 4 is connected together and links to each other with another contact of relay D1, and the other end of two groups of contacts of relay D1 meets power supply VCC and VDD respectively; 4 pin of U3 and the P1.2 mouth of CPU join; 6 pin of U3 and the P1.3 mouth of CPU join; The 5 pin ground connection of U3; 3 pin of U3 are received 4 pin of J5, and 4 pin and operation valve by J5 join; 7 pin of U3 join by 3 pin and the operation valve of J5, and the P1.4 mouth of CPU is connected on the end of resistance R 9, the base stage of another termination triode N2 of R9; The grounded emitter of N2; The current collection collection connects an end of the drive coil of the positive pole of diode D2 and relay D1, the other end of drive coil with receive on the power supply VCC after the negative pole of diode D2 links to each other.

Reset circuit is made of resistance R 4, capacitor C 2 and microswitch S1; The P1.5 mouth of CPU links to each other with the positive pole of the end of microswitch S1, capacitor C 2, an end of resistance R 4, the other end ground connection of the negative pole of capacitor C 2 and microswitch S1, another termination power VCC of resistance R 4.

The secret key circuit is made of resistance R 1, R2; 4 pin of J3 and P0.7 mouth, the R2 of CPU join, and 3 pin of J3 and P0.6 mouth, the R1 of CPU join.

Uploading interface circuit is made of diode D5, D6; The P0.2 mouth of CPU joins with the negative pole of the positive pole of diode D5, D6 and then is connected with 3 pin of J4, and the negative pole of diode D5 meets power supply VCC, the plus earth of D6, and 1 pin of J4 meets VDD '.

Power circuit is made of integrated circuit U4 (MAX603), capacitor C 3, insurance F1; F1 is from double insurance, prevent the generation of short circuit on the plate, U4 (MAX603) is a low pressure reduction, the voltage-regulating circuit of little power consumption, when electric battery (6V) or upper power supply, U4 can export a 5V voltage (VCC) supply control circuit components and parts and use, and the employed VCC2 voltage of U4 circuit is directly supplied with by VDD, when host computer breaks down, power by battery backup.2,3,5,6, the 7 pin ground connection of U4, the minus earth of C3,1 pin and 4 pin of the positive pole of C3 and U4 join, and 2 pin by J1 link to each other with the positive pole of electric battery, and the 1 pin ground connection of J1 is also joined with the negative pole of electric battery, insert VDD ' from 1 pin of J4, receive on the end of insurance F1,1 pin of the other end of F1 and U4 joins, and this point is exactly the power supply vdd terminal, the 8 pin output of U4 is power supply VCC.

Warning circuit comprises that cell voltage hangs down warning circuit, uploads the break alarm circuit, break alarm circuit and inclination in the machine, antimagnetic, warning circuit leaks gas, uncaps; The low warning circuit of cell voltage is made of resistance R 6, R7; The termination power VCC of R6, the end of another termination R7, and join the other end ground connection of R7 with the P0.4 mouth of CPU; Uploading the break alarm circuit is made of resistance R 5, triode N1; The P1.6 mouth of CPU is connected in the end of R5, and the other end of R5 links to each other with the N1 base stage, the grounded emitter of N1, and the collector of N1 is uploaded to host computer by 3 pin of connector J4; The break alarm circuit is made of two leads that are connected with operation valve in the machine; And coexist in the cable with other two leads, 1 a pin ground connection by J5, another root connects the P0.5 mouth of CPU, two lead short circuits in operation valve by 2 pin of J5; Tilt, antimagnetic, the warning circuit that leaks gas, uncaps is made of R10; 1,2,3,4 pin of above-mentioned four kinds of alarm sensors by J2 insert and the end of CPU P0.0 mouth, R10 joins, and the other end of R10 is received on the power supply VCC.

The alarm lamp circuit is made of resistance R 8; 1,2 pin of J6 link to each other on alarm lamp and the CPU board, and its anode links to each other with 1 pin of J6, and negative terminal links to each other with 2 pin of J6, and an end of resistance R 8 is connected with 1 pin of J6, and the other end is received on the power supply VCC.

Inclination alarm sensor of the present utility model is to be made of mercury cut-off; Antimagnetic alarm sensor is made of tongue tube; The alarm sensor of uncapping is made of microswitch.

Claims

1, a kind of intelligent gas meter, by dress is that table body (1), top cover (2) the sum counter box (3) of one formed, it is characterized in that the outer upper end of top cover (2) is equipped with by control panel (8), inclination alarm sensor, antimagnetic alarm sensor, the alarm sensor and battery case (14) constitutes and by the fixing control enclosure (4) of screw (16) of uncapping, there is the battery case jack (18) of an insertion battery case (14) at the outer right flank rear portion of control enclosure (4), the positive middle of control enclosure (4) has an aperture, and alarm lamp (9) is housed in the hole; The operation valve (5) of and rubber ring (7) sealing fixing by screw (6) is housed in the top cover (2); There is a threaded hole (11) the outer upper end of counter box (3), inserts in this hole by the hall element sensor (10) that is threaded the copper sheathing encapsulation, on the character wheel (13) in the counter box (3) aperture is arranged, and is stained with magnet (12) in this hole.

2, intelligent gas meter according to claim 1 is characterized in that drawing one from the right side of control panel (8) passes through the teletransmission cable (15) that control enclosure (4) also seals with rubber ring (17).

3, intelligent gas meter according to claim 1 is characterized in that it is the electric battery that the dry cell series connection of 1.5V constitutes that battery case (14) lining is equipped with by the every joint of four joints.

4, intelligent gas meter according to claim 1, it is characterized in that control panel (8) by CPU (87LPC764), count pulse circuit, motor-drive circuit, reset circuit, secret key circuit, upload interface circuit, power circuit, warning circuit and the alarm lamp circuit constitutes, and be provided with six connector: J1 of J1-J6 and link to each other with supplying cell; J2 links to each other with inclination alarm sensor, antimagnetic alarm sensor, leakage alarm sensor and the alarm sensor of uncapping; J3 is the secret key socket; J4 and host computer upload broken string, upperly drive valve, report to the police upload, VDD ' power supply, GND, counting upload and link to each other; J5 links to each other with break alarm in the machine with operation valve; J6 links to each other with alarm lamp.

5, according to claim 1,2,3 or 4 described intelligent gas meters, it is characterized in that the count pulse circuit is made of hall element sensor, the copper sheathing upper end of encapsulation hall element sensor is porose, the counting pulse signal line is drawn in the Access Control box through the hole, when the counter character wheel rotates a circle, hall element sensor sends an electric impulse signal, and 3 pin of this signal by the connector J6 of control panel insert the P0.3 mouth of CPU and 5 pin by connector J4 are uploaded to host computer.

6,, it is characterized in that motor-drive circuit is made of integrated circuit U3, resistance R 3, R9, capacitor C 4, C5, triode N2, relay D1 and diode D2 according to claim 1,2,3 or 4 described intelligent gas meters; Wherein, 1 pin and 9 pin of integrated circuit U3 join, and link on the contact of relay D1 again with after the positive pole of capacitor C 5 is connected; One end of 2 pin of U3 and 8 pin and resistance R 3, the negative pole of capacitor C 4 join, and the positive pole of the other end of resistance R 3 and capacitor C 4 is connected together and links to each other with another contact of relay D1, and the other end of two groups of contacts of relay D1 meets power supply VCC and VDD respectively; 4 pin of U3 and the P1.2 mouth of CPU join; 6 pin of U3 and the P1.3 mouth of CPU join, the 5 pin ground connection of U3; 3 pin of U3 are received 4 pin of J5, and 4 pin and operation valve by J5 join; 7 pin of U3 join by 3 pin and the operation valve of J5, and the CPUP1.4 mouth is connected on the end of resistance R 9, the base stage of another termination triode N2 of R9, the grounded emitter of N2; Collector connects an end of the drive coil of the positive pole of diode D2 and relay D1, the other end of drive coil with receive on the power supply VCC after the negative pole of diode D2 links to each other.

7,, it is characterized in that reset circuit is made of resistance R 4, capacitor C 2 and microswitch S1 according to claim 1,2,3 or 4 described intelligent gas meters; The P1.5 mouth of CPU links to each other with the positive pole of the end of microswitch S1, capacitor C 2, an end of resistance R 4, the other end ground connection of the negative pole of capacitor C 2 and microswitch S1, another termination power VCC of resistance R 4.

8, according to claim 1,2,3 or 4 described intelligent gas meters, it is characterized in that the secret key circuit is made of resistance R 1, R2; 4 pin of J3 and P0.7 mouth, the R2 of CPU join, and 3 pin of J3 and P0.6 mouth, the R1 of CPU join.

9, according to claim 1,2,3 or 4 described intelligent gas meters, it is characterized in that uploading interface circuit and constitute by diode D5, D6; The positive pole of CPU P0.2 mouth and diode D5, the negative pole of the D6 back that joins is connected with 3 pin of J4, and the negative pole of diode D5 meets power supply VCC, the plus earth of D6, and 1 pin of J4 meets VDD '.

10,, it is characterized in that power circuit is made of integrated circuit U4, capacitor C 3, insurance F1 according to claim 1,2,3 or 4 described intelligent gas meters; 2,3,5,6, the 7 pin ground connection of U4, the minus earth of C3,1 pin and 4 pin of the positive pole of C3 and U4 join, and link to each other with the positive pole of electric battery by 2 pin of J1; The 1 pin ground connection of J1 is also joined with the negative pole of electric battery, inserts VDD ' from 1 pin of J4, receives on the end of insurance F1, and 1 pin of the other end of F1 and U4 joins, and this point is exactly the power supply vdd terminal, and 8 pin of U4 are exported, and are power supply VCC.

11, according to claim 1,2,3 or 4 described intelligent gas meters, it is characterized in that warning circuit comprises that cell voltage hangs down warning circuit, uploads the break alarm circuit, break alarm circuit and inclination in the machine, antimagnetic, warning circuit leaks gas, uncaps; The low warning circuit of cell voltage is made of resistance R 6, R7; The termination power VCC of R6, the end of another termination R7, and join the other end ground connection of R7 with the P0.4 mouth of CPU; Uploading the break alarm circuit is made of resistance R 5, triode N1; The CPUP1.6 mouth is connected in the end of R5, and the other end of R5 links to each other with the base stage of N1, the grounded emitter of N1, and the collector of N1 is uploaded to host computer by 3 pin of connector J4; The break alarm circuit is made of two leads that are connected with operation valve in the machine; And coexist in the cable with other two leads, 1 a pin ground connection by J5, another root connects CPU P0.5 mouth, two lead short circuits in operation valve by 2 pin of J5; Tilt, antimagnetic, the warning circuit that leaks gas, uncaps is made of resistance R 10; 1,2,3,4 pin of above-mentioned four kinds of alarm sensors by J2 insert and the end of CPU P0.0 mouth, R10 joins, and the other end of R10 is received on the power supply VCC.

12, according to claim 1,2,3 or 4 described intelligent gas meters, it is characterized in that the alarm lamp circuit is made of resistance R 8; 1,2 pin of J6 link to each other on alarm lamp and the CPU board, and its anode links to each other with 1 pin of J6, and negative terminal links to each other with 2 pin of J6, and an end of resistance R 8 is connected with 1 pin of J6, and the other end is received on the power supply VCC.