CN2529220Y - Display devices of electronic belt coveyer scale - Google Patents
Display devices of electronic belt coveyer scale Download PDFInfo
- Publication number
- CN2529220Y CN2529220Y CN 02207775 CN02207775U CN2529220Y CN 2529220 Y CN2529220 Y CN 2529220Y CN 02207775 CN02207775 CN 02207775 CN 02207775 U CN02207775 U CN 02207775U CN 2529220 Y CN2529220 Y CN 2529220Y
- Authority
- CN
- China
- Prior art keywords
- signal
- utility
- model
- display apparatus
- parts
- 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
Links
Images
Abstract
The utility model relates to a measuring display apparatus, in particular to an electrical display apparatus on a strap steelyard of a transporting machine. The utility model is characterized in that the utility model divides the display apparatus into two parts, one part is for filtering, magnifying, A/D signal conversion; each tache is connected with each other by order, which is arranged near the construction field; another part is for calculating, treating and displaying; each tache is also connected with each other by order, which is arranged far away from the construction field. The connection between the two parts relies on RS-485 communication. By using of the signal conversion device MAX1480, the utility model can transform the fan-out signal to a RS-485 signal; because the RS-485 digital signal can be transported with long-distance, the mode is much better the voltage or current transportation. due to adopting a double-core shield cable, the utility model can decrease the influence to the signal by each interference source. The display apparatus part used for transporting the signal to the construction field with long-distance mode can put the display part on the operating room so as to be easy for controlling and operating. The utility model can improve the working environment for the apparatus and enhance the life time and measuring precision.
Description
Technical field: the utility model relates to a kind of metering Displaying Meter, particularly conveyer belt scale electronic display meter.
Background technology: belted electronic balance is mounted on the appropriate location of band conveyor, to a kind of measurement instrument that the bulk material by band conveyor carries out rapidly, continuously, accumulative total is weighed, weight signal and rate signal are imported Displaying Meter simultaneously, through links such as filtering, amplification, A/D conversion, calculation process, show the instantaneous delivery and the integrated flow of convey materials at last.Displaying Meter is as the part of belt conveyer scale, be arranged on industry spot, dust is bigger, seriously polluted, have a strong impact on the serviceable life and the measuring accuracy of Displaying Meter, if with Displaying Meter away from industry spot, because sensor output is millivolt signal, long Distance Transmission causes signal attenuation serious, influences measuring accuracy.
The utility model purpose provides a kind of belted electronic balance Displaying Meter, can improve Displaying Meter serviceable life and measuring accuracy away from industry spot, solves the problems referred to above that prior art exists.
The utility model content: Displaying Meter is divided into two parts, and a part is filtering, amplification, A/D conversion of signals, and each link connects successively, be arranged on industry spot, another part is calculation process, demonstration, and each link connects successively, away from industry spot, connect by the RS-485 communication between two parts.
Adopt signal converter MAX1480B that output signal is converted to the RS-485 signal, but, adopt shielded cable, connect two parts of Displaying Meter, reduce various interference effect of signals because RS-485 digital signal long-distance transmissions is better than voltage or current delivery.Long Distance Transmission through another signal converter MAX1480B conversion, is carried out calculation process, demonstration then to the Displaying Meter part away from industry spot.The display part can be placed on operation room, be easy to control and operation, improve the working environment of instrument, improve serviceable life and measuring accuracy.
The utlity model has characteristics such as rational in infrastructure, convenient operation and control, raising measuring accuracy.
Description of drawings:
Fig. 1 is the utility model example structure synoptic diagram.
Fig. 2 is filtering among the utility model embodiment, amplification, A/D signaling conversion circuit schematic diagram.
Fig. 3 is counter 7064 circuit theory diagrams among the utility model embodiment.
Fig. 4 is single chip computer AT 89C52 circuit theory diagrams among the utility model embodiment.
Fig. 5 is on-site signal converter MAX1480B circuit theory diagrams among the utility model embodiment.
Fig. 6 is operation room signal converter MAX1480B circuit theory diagrams among the utility model embodiment.
Fig. 7 is operation room single-chip microcomputer 8031 among the utility model embodiment, PSD311 circuit theory diagrams.
Fig. 8 is that operation room shows the 74LS245 circuit theory diagrams among the utility model embodiment.
Embodiment:, further specify the utility model by embodiment below in conjunction with accompanying drawing.
Displaying Meter is divided into two parts, and a part is filtering, amplification, A/D conversion of signals, and each link connects successively, be arranged on industry spot, another part is calculation process, demonstration, and each link connects successively, away from industry spot, be arranged on operation room, connect by the RS-485 communication between two parts.LOAD CELLS is converted to voltage signal (millivolt signal) with the weight signal that records, and this signal enters operational amplifier 7650, after one-level is amplified, carries out secondary by operational amplifier OP07 and amplifies.Voltage signal after the amplification carries out the V/F conversion by analog to digital converter AD652, be converted to digital signal, deposit counter (programmable logic array) 7064 in, simultaneously tachogenerator deposits measured rate signal in counter 7064 with the form of umber of pulse, single chip computer AT 89C52 gathers two digital signals, output to on-site signal converter MAX1480B by serial port with the RS-232 serial mode then, be converted to the RS-485 serial signal, the RS-485 signal can long-distance transmissions to another part of the Displaying Meter that is positioned at operation room, after this signal carries out conversion of signals through another signal converter MAX1480B, enter single-chip microcomputer 8031 serial ports, initial parameter by the input of single-chip microcomputer PSD311 keypad calculates, output digital signal driving display shows instantaneous delivery and integrated flow.Send part to be installed near the scale frame because instrumented data becomes, eliminated the feeble signal decay that long Distance Transmission causes, measuring accuracy improves one-level, degree of protection is IP67, adapts to industry spot in any case, but RS-485 digital signal long-distance transmissions, transmission range can reach 2km, be better than voltage or current delivery, adopt double core shielding cable, reduce various interference effect of signals, Displaying Meter places operation room, be easy to control operation, improve working environment, raise the efficiency.
Claims (2)
1, a kind of belted electronic balance Displaying Meter, have filtering, amplification, A/D conversion, calculation process, demonstration link, each link connects successively, it is characterized in that Displaying Meter is divided into two parts, a part is filtering, amplification, A/D conversion of signals, each link connects successively, is arranged on industry spot, and another part is calculation process, demonstration, each link connects successively, away from industry spot, connect by the RS-485 communication between two parts, shielded cable connects two parts of Displaying Meter.
2, the belted electronic balance Displaying Meter according to claim 1, it is characterized in that on-the-spot output signal being converted to the RS-485 signal with signal converter MAX1480B, on-site signal carries out calculation process, demonstration after being changed by another signal converter MAX1480B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02207775 CN2529220Y (en) | 2002-03-15 | 2002-03-15 | Display devices of electronic belt coveyer scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02207775 CN2529220Y (en) | 2002-03-15 | 2002-03-15 | Display devices of electronic belt coveyer scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2529220Y true CN2529220Y (en) | 2003-01-01 |
Family
ID=33688670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02207775 Expired - Fee Related CN2529220Y (en) | 2002-03-15 | 2002-03-15 | Display devices of electronic belt coveyer scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2529220Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348956C (en) * | 2005-04-28 | 2007-11-14 | 上海交通大学 | Device for sensing carload |
| CN111537045A (en) * | 2020-05-07 | 2020-08-14 | 江苏远邦工业科技有限公司 | High-precision belt scale intelligent instrument |
-
2002
- 2002-03-15 CN CN 02207775 patent/CN2529220Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348956C (en) * | 2005-04-28 | 2007-11-14 | 上海交通大学 | Device for sensing carload |
| CN111537045A (en) * | 2020-05-07 | 2020-08-14 | 江苏远邦工业科技有限公司 | High-precision belt scale intelligent instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101692006B (en) | Belt conveyor based multi-material belt weighing system | |
| CN206740208U (en) | A kind of high accuracy liquid level sensor for being used to monitor liquid level | |
| CN109425422A (en) | A kind of calibration method of proportioning belt scale | |
| CN2529220Y (en) | Display devices of electronic belt coveyer scale | |
| CN101275866A (en) | Automatic weighing type fluid state material metering instrument | |
| CN208653601U (en) | High-precision and high-stability belted electronic balance | |
| CN102305659A (en) | Continuous weight meter and continuous weight metering method | |
| CN201277882Y (en) | Automatic measuring apparatus for expanded tobacco shred | |
| CN202562533U (en) | A gas flow measuring device metering from zero | |
| CN201335734Y (en) | Long line compensator circuit for weighting sensor | |
| CN2148316Y (en) | Full suspension electronic conveyer-belt weigher | |
| CN203158680U (en) | High-temperature on-line metering device for track chain bucket conveyor | |
| CN203163842U (en) | Novel coal conveying-amount measurement apparatus | |
| CN201945360U (en) | A long-range digital belt weigher | |
| CN2660513Y (en) | Current-carrying spiral tube type ore pulp densimeter | |
| CN107764351A (en) | Method based on electrostatic method real-time online measuring Dual-Phrase Distribution of Gas olid mass flow | |
| CN2792214Y (en) | Roller connector with metering feeder | |
| CN206362429U (en) | A kind of fully-automatic intelligent digital electronic belt weigher device | |
| CN203929182U (en) | Container tipping organic electronic scale | |
| CN106932061A (en) | A kind of device suitable for ore dressing plant belted electronic balance data acquisition | |
| CN203349907U (en) | Dynamic zero point belt weigher | |
| CN112462597A (en) | Coal quantity logic calculation method for coal feeder by adopting SAMA (sampling and analysis) diagram | |
| CN201852623U (en) | High-precision belt weighing device | |
| CN2203446Y (en) | Electronic belt weigher | |
| CN2447758Y (en) | Microcontroller external trigger vibration recorder |
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 |