CN2485630Y - Meter information processor - Google Patents
Meter information processor Download PDFInfo
- Publication number
- CN2485630Y CN2485630Y CN 01241470 CN01241470U CN2485630Y CN 2485630 Y CN2485630 Y CN 2485630Y CN 01241470 CN01241470 CN 01241470 CN 01241470 U CN01241470 U CN 01241470U CN 2485630 Y CN2485630 Y CN 2485630Y
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- CN
- China
- Prior art keywords
- pin
- meet
- cpu
- gnd
- lcd
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a meter information processor, belonging to device which can measure and display a plurality of variables. A signal receiver is connected with a CPU. The CPU is respectively connected with a memory unit, an LCD and a driving circuit. A socket J2 of the driving circuit is connected with a RS485 signal communication interface. The utility model can display the measuring quantity of the meter through the LCD and also can transmit the measuring quantity of the meter in long distance. The utility model has the advantages of intellectualized, avoiding the transferring friction of the machinery gear system, no phenomenon of latch, clear and easy for reading, long transmission distance reaching 1200 meters, anti-jamming and safe use.
Description
The utility model belongs to the device of measuring and showing a plurality of variablees.
Present teletransmission gauging table comprises ammeter, water meter, gas meter, flow meter, adopt the mechanical count wheel to show mostly, on the structure of former table, add again and load onto pulse generating unit, make the fluid variable send pulse signal, but " falling the step " phenomenon appears in this type of pulse output easily, makes the distortion of instrument counting.In addition, be example with the water meter, owing to adopt mechanical train transmission, a plurality of circular needle dials are arranged simultaneously on dial plate, reading is very inconvenient, misreads easily.
The purpose of this utility model provides a kind of gauging table message handler, can be with the metered amounts liquid crystal display of gauging table, and can long-distance transmissions.
The utility model is achieved in that signal receiver 1 connects central processor CPU 2, and CPU2 connects memory 3, LCD LCD4 and driving circuit 5 respectively, socket J in the driving circuit 5
2Connect the RS485 signal communication interface.
The sensing chip G of signal receiver 1 is coaxial with the water wheels of water meter, inductance L
1Stationkeeping.Inductance L
1Two ends connect capacitor C respectively
7, C
8After connect capacitor C
2, C
2Another termination transistor Q
2Base stage; Q
2Collector series resistance R
7After meet power supply VCC, C
11With R
9Be concatenated into Q after the parallel connection
2Emitter and GND between; Transistor Q
3Base stage serial connection capacitor C
6After meet Q
2Collector, capacitor C
6And C
7Link; R
4Connect transistor Q
3Base stage and emitter, Q
3Emitter meets GND, Q
3Collector connect 14 pin of CPU2; Q
3Collector connects C
12Anode, C
12Negative terminal meets GND.
Transistor Q in the driving circuit 5
1Base series resistor R
1After connect 1 pin of CPU2, Q
1Collector connect chip D
1The control utmost point, D
1Anode meet GND, D
1Negative electrode connect 13 pin of CPU2, Q
1Emitter resistance in series R
6After meet power supply VCC; Driver U
31,4 pin connect 11,12 pin of CPU2, U respectively
32,3 pin and connect after connect 2 pin of CPU2; U
36,7 pin combination hub J
2, J
2Connect outside 485 buses; Capacitor C
5Negative pole meet GND, C
5Positive pole connect 4 pin of CPU2; Capacitor C
1, C
3And C
4Anodal parallel connection after meet power supply VCC, C
1, C
3The other end and C
4Negative pole meet GND; The positive pole connection diode D of battery E
3Anode, D
3Negative electrode meet Q
1Emitter, the negative pole of battery E meets GND.
Compare with existing gauging table, the beneficial effects of the utility model are:
1, owing to adopted single-chip microcomputer, make it have intelligentized characteristics, be embodied in:
A, have reliable data-transformation facility, overcome " falling the step " situation, improved the reliability of instrument;
B, have stronger data processing function, can carry out compensation data, computing, improve the accuracy of instrument;
C, has the information storage function.
2, owing to adopt liquid crystal display to replace the mechanical count wheel, avoided the friction of mechanical gear systems communicate, can not produce " latch " phenomenon, reading is clear, easy.
3, owing to adopt the RS-485 communication interface, transmission range can reach 1200 meters, and has than strong anti-interference ability.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a circuit diagram of the present utility model.
Fig. 3, Fig. 4 are the circuit diagrams of embodiment.
Be described further below in conjunction with embodiment.
In signal receiver 1, water wheels are contained in the housing of conventional water meter, when water flows through, drive water wheels and very thin sensing chip rotation.Sensing chip and L
1Be coupled.Transistor Q
2, capacitor C
7, C
8, L
1Form capacitance connecting three point type oscillator.L
1For being around in telefault on the ferrite.Work as L
1Near during no metal object, L
1Have high Q value, the circuit starting of oscillation, oscillator signal makes Q
3Transistor turns, C
12Electric charge is discharged into GND, and CPU obtains low level.And as the close L of metal object
1The time, its Q value becomes very low, and circuit loses the condition of keeping vibration and failure of oscillation, transistor Q
3Can't conducting, electrochemical capacitor by from the current charges on the CPU to high level, this moment CPU detected also is high level.Because circular sensing chip its half is a metal, and second half is plastics, so sensing chip whenever circles, and CPU just finishes an Angular Displacement Detecting numeration.
This Angular Displacement Detecting probe is noncontact, non magnetic detector.Whether it is not subjected to have in the material iron rust to influence, and is not subjected to magnetic interference yet, is a kind of high reliability detector.
The mode that message recipient 1 receives the ammeter signal is:
The circuit 1-A of Fig. 3 is by photoelectric tube Q
4And C
5The photoelectric tube of forming receives the ammeter pulse signal.14 pin of A termination CPU2 among the figure, Q
4Emitter meet GND; Diode D
5Two termination ammeters.From the pulse signal of ammeter, when positive pulse makes photoelectric tube Q
4Conducting, the A place is a low level; Otherwise make Q
4End, the A point is a high level, reaches the purpose of pulse numeration.
The mode that message recipient 1 receives the gas meter, flow meter signal is:
Fig. 4 circuit 1-B adopts the tongue tube counting.Gas meter, flow meter air chamber output is the rotation of disk Y, and small magnet is housed on it, when magnet makes its closure near tongue tube GH, A order low level, otherwise be high level, reach the purpose that output is counted.
The signal that central processor CPU 2 is accepted from the Angular Displacement Detecting head carries out digital filtering, and legitimacy is judged, send LCD4 to show that LCD4 has special-purpose Presentation Function.CPU also can find fault regularly to the each several part performance review finishing several adopting simultaneously, reports to the police by the RS-485 universal serial bus.LCD
4Liquid crystal display refers to that mainly the art parameter is as follows:
The capacity of display: 8 bit digital+11 group prompt
Chip operating voltage: 3.0v～6.5v
Quiescent dissipation electric current:＜12 μ A (5.0v)
Word height: 7.8mm envionmental humidity:＜85%
Visual angle: 6: 00 working temperatures :-10～+ 50 ℃
Display mode: the reflective storing temperature that just showing :-20～+ 60 ℃
Interface mode: three-wire type serial line interface (Type B)
The interface signal explanation:
1, CS: chip selection signal input 2, CLK: serial-shift pulse input
3, DI: serial data input 4, VSS: power supply ground
5, VDD: positive source
SMS0806 address mapping table:
| ?LCDRAM | D7 | D6 | D5 | D4 | D3 | D2 | ?D1 | ?D0 |
| 0 | D8 | E8 | G8 | F8 | H8 | C8 | ?B8 | ?A8 |
| 2 | D7 | E7 | G7 | F7 | H7 | C7 | ?B7 | ?A7 |
| 4 | D6 | E6 | G6 | F6 | H6 | C6 | ?B6 | ?A6 |
| 6 | D5 | E5 | G5 | F5 | H5 | C5 | ?B5 | ?A5 |
| 8 | D4 | E4 | G4 | F4 | H4 | C4 | ?B4 | ?A4 |
| 10 | D3 | E3 | G3 | F3 | H3 | C3 | ?B3 | ?A3 |
| 12 | D2 | E2 | G2 | F2 | H2 | C2 | ?B1 | ?A2 |
The sequence number of memory 3 (model 24C02) storage instrument, information such as cumulative volume have data protection, hold function.
RS-485 driver U
3The employing model is SN65176B.
D
1The cell voltage sinking is checked.By regularly opening transistor Q
1, cell voltage is added on the TL431.When cell voltage is lower than 3.1V, D
1Not conducting, CPU obtains high level, otherwise, can obtain low level.This information is uploaded by RS-485 after obtaining confirming, reminds relevant department to change battery.
Claims (4)
1, gauging table message handler is characterized in that: signal receiver [1] connects central processor CPU [2], CPU[2] connect memory [3], LCD LCD[4 respectively], and driving circuit [5], socket J in the driving circuit [5]
2Connect the RS485 signal communication interface.
2, gauging table message handler according to claim 1 is characterized in that: the sensing chip G of signal receiver [1] is coaxial with the water wheels of water meter, inductance L
1Stationkeeping, inductance L
1Two ends connect capacitor C respectively
7, C
8After connect capacitor C
2, C
2Another termination transistor Q
2Base stage; Q
2Collector series resistance R
7After meet power supply VCC, C
11With R
9Be concatenated into Q after the parallel connection
2Emitter and GND between; Transistor Q
3Base stage serial connection capacitor C
6After meet Q
2Collector, capacitor C
6And C
7Link; R
4Connect transistor Q
3Base stage and emitter, Q
3Emitter meets GND, Q
3Collector meet CPU[2] 14 pin; Q
3Collector connects C
12Anode, C
12Negative terminal meets GND.
3, gauging table message handler according to claim 1 is characterized in that: transistor Q in the driving circuit [5]
1Base series resistor R
1After meet CPU[2] 1 pin, Q
1Collector connect chip D
1The control utmost point, D
1Anode meet GND, D
1Negative electrode meet CPU[2] 13 pin, Q
1Emitter resistance in series R
6After meet power supply VCC; Driver U
31,4 pin meet CPU[2 respectively] 11,12 pin, U
32,3 pin and connect after meet CPU[2] 2 pin; U
36,7 pin combination hub J
2, J
2Connect outside 485 buses; Capacitor C
5Negative pole meet GND, C
5Positive pole meet CPU[2] 4 pin; Capacitor C
1, C
3And C
4Anodal parallel connection after meet power supply VCC, C
1, C
3The other end and C
4Negative pole meet GND; The positive pole connection diode D of battery E
3Anode, D
3Negative electrode meet Q
1Emitter, the negative pole of battery E meets GND.
4, gauging table message handler according to claim 1 is characterized in that: central processor CPU [2] connects in the circuit with memory [3] and liquid crystal display [4], meets CPU[2 respectively after 1,2, the 3 pin parallel connections of memory [3]] 5 pin and GND, capacitor C
9, C
10And CPU[2] 5 pin meet GND respectively; Capacitor C
9, C
10Meet CPU[2] 6,7 pin, serial connection crystal XT between above-mentioned 6,7 pin; 5,6 pin of memory [3] meet CPU[2 respectively] 9,10 pin; LCD LCD[4] 1 pin meet CPU[2] 3 pin, LCD[4] 2 pin resistance in series R
2After meet power supply VCC, LCD[4] 3 pin meet CPU[2] and 8 pin, LCD[4] 4 pin meet GND, LCD[4] 5 pin meet power supply VCC; Diode D
2Anode meets CPU[2] 4 pin, D
2Negative electrode meet VCC.When receiver 1 receives the ammeter signal, the 14 pin series connection photoelectric tube Q of central processor CPU [2]
4After meet GND, with Q
4Correspondence is fixed with infrarede emitting diode D
5, D
5Two termination ammeters.When receiver 1 receives the gas meter, flow meter signal, meet GND behind the 14 pin series connection tongue tube GH of central processing unit [2], the corresponding disk Y that fixedly has ferromagnetic block with tongue tube GH, disk Y is installed on the gas meter, flow meter output revolving shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01241470 CN2485630Y (en) | 2001-04-28 | 2001-04-28 | Meter information processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01241470 CN2485630Y (en) | 2001-04-28 | 2001-04-28 | Meter information processor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2485630Y true CN2485630Y (en) | 2002-04-10 |
Family
ID=33653464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01241470 Expired - Fee Related CN2485630Y (en) | 2001-04-28 | 2001-04-28 | Meter information processor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2485630Y (en) |
-
2001
- 2001-04-28 CN CN 01241470 patent/CN2485630Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |