CN204013431U - Analog signal sensors Signal Matching device - Google Patents
Analog signal sensors Signal Matching device Download PDFInfo
- Publication number
- CN204013431U CN204013431U CN201420379985.9U CN201420379985U CN204013431U CN 204013431 U CN204013431 U CN 204013431U CN 201420379985 U CN201420379985 U CN 201420379985U CN 204013431 U CN204013431 U CN 204013431U
- Authority
- CN
- China
- Prior art keywords
- signal
- operational amplifier
- analog signal
- stabilization circuit
- impedance stabilization
- 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
Landscapes
- Amplifiers (AREA)
Abstract
The utility model discloses analog signal sensors Signal Matching device, the output of analog signal sensors connects the input end of analog signal of controlled device by holding wire, the utility model comprises the prime impedance stabilization circuit connecting by transmission signal line, rear class impedance stabilization circuit and DC power supply, described prime impedance stabilization circuit closes on analog signal sensors, the signal output part of the signal input part connecting analog signal transducer of prime impedance stabilization circuit, described rear class impedance stabilization circuit closes on controlled device, the signal input part of described rear class impedance stabilization circuit connects the signal output part of prime impedance stabilization circuit, the signal output part of rear class impedance stabilization circuit connects controlled device.The disclosed analog signal impedance stabilization of the utility model circuit, simple in structure, cost is low, can, in the situation that ensureing signal stabilization, extend the transmission range of analog signal, is more suitable for commercial Application.
Description
Technical field
The utility model belongs to field of signal transmissions, is specifically related to the Signal Matching device that a kind of output signal of analog signal sensors is used in transmitting procedure.
Background technology
Electronic displacement sensor on equipment, capacitance displacement sensor, the analog signal sensors (analog signal sensors refers to the transducer of outputting analog signal) such as linear range output transducer, in the time of long distance transmission analog signal, due to the capacity effect between holding wire, output impedance to analog signal sensors impacts, cause the output of analog signal to occur distortion, finally cause rear class control to occur abnormal, from equipment service manual, the holding wire length of analog signal sensors can not exceed 40 meters, also on holding wire, increase magnet ring to reduce the distortion of signal simultaneously, improve the accuracy of controlling.
Produce a kind of adaptation, adapt to the long-distance transmissions of analog signal sensors, factory application is had great importance.
Utility model content
The utility model aims to provide a kind of analog signal sensors Signal Matching device, can ensure, in the distortionless situation of signal, to realize the long-distance transmissions of analog signal.
For solving above technical problem, the utility model provides following technical scheme: analog signal sensors Signal Matching device, the output of analog signal sensors connects the input end of analog signal of controlled device by holding wire, innovation of the present utility model is, comprise the prime impedance stabilization circuit connecting by transmission signal line, rear class impedance stabilization circuit and DC power supply, the signal output part of the signal input part connecting analog signal transducer of described prime impedance stabilization circuit, the signal input part of described rear class impedance stabilization circuit connects the signal output part of prime impedance stabilization circuit, the signal output part of rear class impedance stabilization circuit connects controlled device.
Further, described prime impedance stabilization circuit comprises the first operational amplifier, the first electric capacity, the second electric capacity, the first resistance and the second resistance, first described electric capacity one end connects DC power supply, other end ground connection, the positive supply input of the first described operational amplifier connects DC power supply, negative supply input end grounding, the signal output part of in-phase input end connecting analog signal transducer, inverting input connects the output of the first operational amplifier, the in-phase input end of the first described operational amplifier is also by the second electric capacity and the first grounding through resistance that are connected in parallel, the 3rd electric capacity and the second grounding through resistance that the output of the first described operational amplifier is also connected in parallel by connection.
Further, described rear class impedance stabilization circuit comprises the second operational amplifier, the 3rd resistance, the 4th electric capacity, the 5th electric capacity and the 6th electric capacity, the 4th described electric capacity one end connects DC power supply, other end ground connection, the positive supply input of the second described operational amplifier connects DC power supply, negative supply input end grounding, the in-phase input end of the second operational amplifier connects the output of the first operational amplifier, the inverting input of the second operational amplifier connects the output of the second operational amplifier, on the in-phase input end of the second described operational amplifier also by the 5th electric capacity and the 3rd grounding through resistance that are connected in parallel, the output of the second operational amplifier connects controlled device, the output of the second described operational amplifier is also by the 6th capacity earth.
Further, described prime and rear class impedance stabilization circuit outside all arrange screening can, screening can ground connection.
Further, described screening can is metal shell.
Further, described transmission signal line inside is provided with shielded conductor.
Further, described controlled device is frequency converter.
By above technical scheme, the beneficial effects of the utility model are: 1, realized the long-distance transmissions of analog signal, ensured the accuracy of signal transmission; 2, described Signal Matching device is simple in structure, has facilitated maintenance; 3, selected low cost, the element that tolerance is high, thus improve economic benefit; 4, prime impedance stabilization circuit and rear class impedance stabilization circuit outer setting screening can, has further improved the stability of signal; 5, shielded conductor is set on transmission signal line and has improved the stable of signal in transmitting procedure.
Brief description of the drawings
Fig. 1 is theory diagram described in the utility model embodiment;
Fig. 2 is circuit theory diagrams described in the utility model embodiment.
Embodiment
Below in conjunction with Figure of description, the invention will be further described with concrete preferred embodiment, but protection range not thereby limiting the invention.
Analog signal sensors described in the present embodiment refers to that output signal is the transducer of analog signal, the input equipment that controlled device finger print analog signal is final.
Analog signal sensors Signal Matching device, as shown in Figure 1, comprise the prime impedance stabilization circuit and the rear class impedance stabilization circuit that connect by transmission signal line, in the process using, prime impedance stabilization circuit closes on analog signal sensors, rear class impedance stabilization circuit closes on controlled device, controlled device can be the analog signal input equipments such as frequency converter, the output of the signal input part connecting analog signal transducer of described prime impedance stabilization circuit, the signal output part of prime impedance stabilization circuit connects the signal input part of rear class impedance stabilization circuit by transmission signal line, the signal output part of described rear class impedance stabilization circuit connects the input end of analog signal of controlled device, in described transmission signal line, be provided with shielded conductor, thereby the interference being subject in reduction signals transmission.
As shown in Figure 2, described prime impedance stabilization circuit is for improving the stability of signal, described prime impedance stabilization circuit outer setting metal shell, ground connection after shielded conductor in transmission signal line and metal shell join, thereby play the effect of signal shielding, reduce the interference of outer signals, described prime impedance stabilization circuit comprises that the first operational amplifier U1A(model is LM324), the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the first resistance R 1 and the second resistance R 2, first capacitor C 1 one end connects DC power supply, other end ground connection, thereby DC power supply carried out to filtering processing, the positive supply input (pin is 4) of the first operational amplifier U1A connects DC power supply, negative supply input (pin is 11) ground connection, the output of in-phase input end (pin 3) connecting analog signal transducer DZ, the power input of analog signal sensors DZ connects DC power supply, earth terminal ground connection, the in-phase input end of the first operational amplifier U1A is also by the second capacitor C 2 and the first resistance R 1 ground connection of being connected in parallel, thereby stablize input impedance, make analog signal more stable, the inverting input (pin is 2) of the first operational amplifier U1A connects the output (pin is 1) of the first operational amplifier U1A, the output (pin is 1) of the first operational amplifier U1A is by the 3rd capacitor C 3 and the second resistance R 2 ground connection that are connected in parallel, thereby the impedance in stable transfer holding wire, improve the stability of signal, the output (pin is 1) of the first operational amplifier U1A also connects rear class impedance stabilization circuit by transmission signal line.
Described rear class impedance stabilization circuit is for further stablizing signal, signal code is amplified simultaneously, described rear class impedance stabilization circuit outer setting metal shell, ground connection after shielded conductor in metal shell and transmission signal line joins, thereby play the effect of signal shielding, described rear class impedance stabilization circuit comprises the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, the 3rd resistance R 3 and the second operational amplifier U2A, the 4th described capacitor C 4 one end connect DC power supply, other end ground connection, thereby DC power supply is carried out to signal filtering, the clutter that prevents DC power supply impacts circuit, the positive supply input (pin is 4) of the second operational amplifier U2A connects DC power supply, negative supply input (pin is 11) ground connection, the in-phase input end (pin 4) of the second operational amplifier U2A connects the signal output part of the first operational amplifier U1A by transmission signal line, the in-phase input end (pin 4) of the second operational amplifier U2A is by the 5th capacitor C 5 and the 3rd resistance R 3 ground connection that are connected in parallel, thereby improve the input impedance of the second operational amplifier U2A, stabilization signal, the output (pin is 1) of the second operational amplifier U2A is by the 6th capacitor C 6 ground connection, output (pin is 1) the connectivity port OUT of the second operational amplifier U2A, port OUT connects the signal input part of controlled device, the 6th capacitor C 6 and controlled device are equivalent to be connected in series, the capacitance of the 6th capacitor C 6 is less, it plays the effect of stablizing impedance.
Port+24V is the output of DC power supply; the output of DC power supply connects the positive pole of diode D1; the negative pole of diode D1 connects the first operational amplifier U1A, the second operational amplifier U2A, the first capacitor C 1, the 4th capacitor C 4 and analog signal sensors, thereby reverse power connection is played a protective role.Port GND is earth terminal.
The disclosed analog signal impedance stabilization of the utility model circuit, simple in structure, cost is low, can, in the situation that ensureing signal stabilization, extend the transmission range of analog signal, is more suitable for commercial Application.
Claims (7)
1. analog signal sensors Signal Matching device, the output of analog signal sensors connects the input end of analog signal of controlled device by holding wire, it is characterized in that: comprise the prime impedance stabilization circuit connecting by transmission signal line, rear class impedance stabilization circuit and DC power supply, the signal output part of the signal input part connecting analog signal transducer of described prime impedance stabilization circuit, the signal input part of described rear class impedance stabilization circuit connects the signal output part of prime impedance stabilization circuit, the signal output part of rear class impedance stabilization circuit connects controlled device.
2. analog signal sensors Signal Matching device as claimed in claim 1, it is characterized in that: described prime impedance stabilization circuit comprises the first operational amplifier, the first electric capacity, the second electric capacity, the 3rd electric capacity, the first resistance and the second resistance, first described electric capacity one end connects DC power supply, other end ground connection, the positive supply input of the first described operational amplifier connects DC power supply, negative supply input end grounding, the output of in-phase input end connecting analog signal transducer, inverting input connects the output of the first operational amplifier, the in-phase input end of the first described operational amplifier is also by the second electric capacity and the first grounding through resistance that are connected in parallel, the 3rd electric capacity and the second grounding through resistance that the output of the first described operational amplifier is also connected in parallel by connection.
3. analog signal sensors Signal Matching device as claimed in claim 2, it is characterized in that: described rear class impedance stabilization circuit comprises the second operational amplifier, the 3rd resistance, the 4th electric capacity, the 5th electric capacity and the 6th electric capacity, the 4th described electric capacity one end connects DC power supply, other end ground connection, the positive supply input of the second described operational amplifier connects DC power supply, negative supply input end grounding, the in-phase input end of the second operational amplifier connects the output of the first operational amplifier, the inverting input of the second operational amplifier connects the output of the second operational amplifier, on the in-phase input end of the second described operational amplifier also by the 5th electric capacity and the 3rd grounding through resistance that are connected in parallel, the output of the second operational amplifier connects controlled device, the output of the second described operational amplifier is also by the 6th capacity earth.
4. analog signal sensors Signal Matching device as claimed in claim 3, is characterized in that: described prime and rear class impedance stabilization circuit outside all arrange screening can, screening can ground connection.
5. analog signal sensors Signal Matching device as claimed in claim 4, is characterized in that: described screening can is metal shell.
6. the analog signal sensors Signal Matching device as described in claim 1 to 5 any one, is characterized in that: described transmission signal line inside is provided with shielded conductor.
7. analog signal sensors Signal Matching device as claimed in claim 6, is characterized in that: described controlled device is frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420379985.9U CN204013431U (en) | 2014-07-10 | 2014-07-10 | Analog signal sensors Signal Matching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420379985.9U CN204013431U (en) | 2014-07-10 | 2014-07-10 | Analog signal sensors Signal Matching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204013431U true CN204013431U (en) | 2014-12-10 |
Family
ID=52053365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420379985.9U Expired - Fee Related CN204013431U (en) | 2014-07-10 | 2014-07-10 | Analog signal sensors Signal Matching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204013431U (en) |
-
2014
- 2014-07-10 CN CN201420379985.9U patent/CN204013431U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2013096132A3 (en) | Power line communication transmitter with amplifier circuit | |
| CN201004689Y (en) | A device for remote distance video transfer, voltage stabilization of power supply, audio or signal control | |
| CN204013431U (en) | Analog signal sensors Signal Matching device | |
| CN104270108A (en) | Charge amplifier | |
| CN201878104U (en) | Filter | |
| CN101931538B (en) | Capacitor coupling circuit and Ethernet network equipment | |
| CN203968060U (en) | A kind of sample circuit for photovoltaic combiner box | |
| CN203166981U (en) | Magnetic separation signal transmission circuit | |
| CN201467268U (en) | Video anti-jammer | |
| CN203120015U (en) | Video signal amplification circuit | |
| CN204206115U (en) | A kind of amplifying circuit for wireless short wave transmitting antenna | |
| CN203661054U (en) | Data transmission circuit and data transmission system | |
| CN204498075U (en) | A kind of radio frequency automatic gain control circuit | |
| CN203179278U (en) | Sensor signal acquisition module based on optical fiber communication technology | |
| CN203502584U (en) | Novel laser pulse receiving circuit | |
| CN204392441U (en) | A kind of signal amplifier for CCTV camera | |
| CN203788282U (en) | Power line carrier amplification circuit in power system | |
| CN202798611U (en) | Common module filter circuit | |
| CN204231305U (en) | A kind of mine supervision system multifunctional signal sample circuit | |
| CN203178344U (en) | Direct current voltage signal acquisition circuit | |
| CN204694764U (en) | A kind of current collecting device | |
| CN203672519U (en) | Wireless temperature hot-fluid acquisition node for building energy consumption monitoring | |
| CN203180863U (en) | An anti-aliasing low-pass filter of an airplane-mounted data collector | |
| CN203563051U (en) | Signal isolator | |
| CN105375747B (en) | A kind of analogue quantity output circuit device of Fiber isolation |
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: 20141210 Termination date: 20210710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |