CN202350901U - Signal transmitter for weighing sensor - Google Patents
Signal transmitter for weighing sensor Download PDFInfo
- Publication number
- CN202350901U CN202350901U CN2011204385448U CN201120438544U CN202350901U CN 202350901 U CN202350901 U CN 202350901U CN 2011204385448 U CN2011204385448 U CN 2011204385448U CN 201120438544 U CN201120438544 U CN 201120438544U CN 202350901 U CN202350901 U CN 202350901U
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- pin
- electric current
- connects
- potentiometer
- power supply
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- 238000005303 weighing Methods 0.000 title abstract 4
- 230000003321 amplification Effects 0.000 abstract description 6
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 6
- 239000003990 capacitor Substances 0.000 abstract 1
- 210000004027 cell Anatomy 0.000 description 21
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003571 opsonizing effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model provides a signal transmitter for a weighing sensor, wherein the power end of the weighing sensor is connected with an adjustable-voltage power source, and the output end thereof is connected with the input pin of a signal amplifier; a potentiometer for gain adjustment is connected with the gain pin of the signal amplifier, the output pin of the signal amplifier is connected with a potentiometer for current limit and then connected to the input pin of a current ring converter, and the output pin of the current ring converter is connected with the base of a triode; the collector of the triode is connected with the power source, and the emitter of the triode is connected with another pin of the current ring converter; and the current output pin of the current ring converter is connected to an external load, the other end of the external load is connected with the ground of a power supply, capacitors are connected between the positive pole of the power supply and the current output pin of the current ring converter respectively, and the positive pole of the power supply is connected to other electric elements after through a diode. The signal transmitter for a weighing sensor provided by the utility model can adjust the resistances of the two potentiometers respectively, so as to obtain a wider amplification range; and the signal transmitter is suitable for most signal amplification processing.
Description
Technical field
The utility model relates to a kind of electronic installation that the feeble signal of LOAD CELLS is carried out processing and amplifying; Be specifically related to a kind of can the feeble signal that LOAD CELLS produces the amplification; Nurse one's health at last the transmitter of 4-20mA output current signal, belong to signal transmitting apparatus field.
Background technology
When control system is carried out the measurement of weight of material; Often utilize the control system strong calculation function to carry out the calculating of weight of material or flow; The standard signal that this just need carry out the signal of LOAD CELLS processing and amplifying and convert 4-20mA to; Supply the control system utilization so that carry out the signal is far passed, this just needs the load cell signal transmitter.At present; Though various such transmitters are arranged on the market, and often range of adjustment is too narrow, when carrying out the parallel connection of a plurality of sensor signals; The amplification opsonizing capacity of transmitter falls sharply; Also can't meet the demands even if the enlargement factor of transmitter is transferred to maximal value, the model that needs to change transmitter could be suitable for, thereby makes troubles to application.
Summary of the invention
The purpose of the utility model is the high performance load cell signal transmitter that provides a kind of scope of application wideer; The linear amplifying power of very wide signal can be arranged, and the output current signal of the 4-20mA of uses such as can supplying computing machine, controller, integrating instrument is provided.
But the utility model is achieved in that the load cell signal transmitter and is made up of with potentiometer 4, electric current loop converter 5, triode 6, electric capacity 7 voltage controller power sources 8 and diode 9 with potentiometer 2, current limliting LOAD CELLS 1, signal amplifier 3, gain-adjusted; But the power end of LOAD CELLS connects voltage controller power source 8; The output terminal of LOAD CELLS connects the input pin of signal amplifier 3; Gain-adjusted connects the gain pin of signal amplifier 3 with potentiometer 2; The output pin of signal amplifier 3 connects the input pin that a current limliting is connected to electric current loop converter 5 after with potentiometer 4, and an output pin of electric current loop converter 5 connects the base stage of triode 6; The collector of triode 6 connects power supply; Its emitter connects another pin of electric current loop converter 5; The electric current output pin of electric current loop converter 5 is connected to external loading 10; The other end of external loading is connected with the ground of power supply, and electric capacity 7 is connected between the electric current output pin of positive pole and electric current loop converter of power supply, and the positive pole of power supply is connected to other and uses electric device behind diode 9.
But described LOAD CELLS 1, signal amplifier 3, gain-adjusted all are public element with potentiometer 2, current limliting with potentiometer 4, electric current loop converter 5, triode 6, electric capacity 7 voltage controller power sources 8 and diode 9; The signal amplification factor of circuit can be united adjusting with the current limliting of potentiometer 2 and electric current loop converter 5 with potentiometer 4 by the gain-adjusted of signal amplifier 3, and the scope of application is wideer; Signal amplifier can be selected INA126 chip 11 or functionally similar chip for use, and the electric current loop converter can be selected XTR115 chip 12 or functionally similar chip for use; Damage circuit component in order to prevent wrong polarity, adopt diode 9 to protect; But voltage controller power source 8 can be adjusted according to the requirement of LOAD CELLS.
The beneficial effect of the utility model:
1, can obtain very wide amplification range through the resistance of regulating two potentiometers respectively;
2, transmitter provides the output current signal of 4-20mA, can supply utilizations such as computing machine, controller, integrating instrument; Can be applicable to the signal processing and amplifying of most of LOAD CELLSs.
Description of drawings
Fig. 1 is the circuit diagram of the utility model;
Fig. 2 is the practical implementation synoptic diagram of the utility model;
Among the figure: the 1-LOAD CELLS, the 2-gain-adjusted is used potentiometer, the 3-signal amplifier, the 4-current limliting is used potentiometer; 5-electric current loop converter, 6-triode, 7-electric capacity, but 8-voltage controller power source; The 9-diode, 10-external loading, 11-INA126 chip, 12-XTR115 chip.
Embodiment
Below in conjunction with embodiment the utility model is described further.
But load cell signal transmitter as shown in Figure 1 is made up of with potentiometer 4, electric current loop converter 5, triode 6, electric capacity 7 voltage controller power sources 8, diode 9 with potentiometer 2, signal amplifier 3, current limliting LOAD CELLS 1, gain-adjusted;
But the power lead of LOAD CELLS 1 connects voltage controller power source 8; The output line of LOAD CELLS 1 connects the input end of signal amplifier 3, and gain-adjusted is with the gain pin of potentiometer 2 connection signal amplifiers 3, and the output termination current limliting of signal amplifier 3 is used potentiometer; The input end of electric current loop converter 5 connects current limliting with potentiometer 4, and output pin connects the base stage of triode 6; The collector of triode 6 connects power supply; Its emitter connects through the pin of electric current loop converter 5; The another one pin of electric current loop converter 5 is connected to external loading 10; The other end of external loading 10 connects the ground of power supply, and electric capacity 7 is connected between the electric current output pin of positive pole and electric current loop converter 5 of power supply, and the positive pole of power supply is connected to other and uses electric device behind diode 9.
As shown in Figure 2; Signal amplifier 3 is selected INA126 chip 11 for use, and electric current loop converter 5 is selected XTR115 chip 12 for use, but the power lead of LOAD CELLS 1 connects voltage controller power source 8; But the voltage of voltage controller power source 8 is set according to the requirement of LOAD CELLS 1; The output signal of LOAD CELLS 1 gets into the signal input part of INA126 chip 11, and INA126 chip 11 is connected with potentiometer 2 (the resistance adjustable extent is 0-25k) with gain-adjusted, the power supply of INA126 chip 11 by import ± supply of 12VDC power supply; The output signal of INA126 chip 11 is connected to XTR115 chip 12 through current limliting with potentiometer 4 (the resistance adjustable extent is 0-25k); The signal output pin 6 of XTR115 chip 12 connects the base stage of triode 6, the collector connection+12V power supply of triode 6, and its emitter connects the pin 5 of XTR115 chip 12; The pin 4 of XTR115 chip 12 is the output of 4-20mA electric current; Be connected to external loading 10, the ground of the other end power supply of external loading 10 ,+12V power end is connected to other and uses electric device behind diode 9; Electric capacity 7 is connected between the electric current output pin of power supply+12V and electric current loop converter 5, power supply+12V is connected to other and uses electric device behind diode 9.
Work as signal amplifier, when the electric current loop converter is selected other chips for use, according to concrete chip appropriate change connected mode.
The utility model describes through the practical implementation process; Under the situation that does not break away from the utility model scope; Can also carry out various conversion and be equal to replacement the utility model patent; Therefore, the utility model patent is not limited to disclosed practical implementation process, and should comprise the whole embodiments that fall in the utility model Patent right requirement scope.
Claims (1)
1. load cell signal transmitter is characterized in that: but form with potentiometer, electric current loop converter, triode, electric capacity voltage controller power source with potentiometer, current limliting by LOAD CELLS, signal amplifier, gain-adjusted; But the power end of LOAD CELLS connects voltage controller power source; The output terminal of LOAD CELLS connects the input pin of signal amplifier; Gain-adjusted connects the gain pin of signal amplifier with potentiometer; The output pin of signal amplifier connects the input pin that a current limliting is connected to the electric current loop converter after with potentiometer, and an output pin of electric current loop converter connects the base stage of triode; The collector of triode connects power supply; Its emitter connects another pin of electric current loop converter; The electric current output pin of electric current loop converter is connected to external loading; The other end of external loading is connected with the ground of power supply, and electric capacity is connected between the electric current output pin of positive pole and electric current loop converter of power supply, and the positive pole of power supply is connected to other and uses electric device behind diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204385448U CN202350901U (en) | 2011-11-08 | 2011-11-08 | Signal transmitter for weighing sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204385448U CN202350901U (en) | 2011-11-08 | 2011-11-08 | Signal transmitter for weighing sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202350901U true CN202350901U (en) | 2012-07-25 |
Family
ID=46539898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204385448U Expired - Fee Related CN202350901U (en) | 2011-11-08 | 2011-11-08 | Signal transmitter for weighing sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202350901U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104273017A (en) * | 2014-09-22 | 2015-01-14 | 昆明理工大学 | Adjustable potted plant weighing and irrigating device |
-
2011
- 2011-11-08 CN CN2011204385448U patent/CN202350901U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104273017A (en) * | 2014-09-22 | 2015-01-14 | 昆明理工大学 | Adjustable potted plant weighing and irrigating device |
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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: 20120725 Termination date: 20141108 |
|
| EXPY | Termination of patent right or utility model |