CN210273979U - Four-channel ultra-small signal amplifying circuit module - Google Patents
Four-channel ultra-small signal amplifying circuit module Download PDFInfo
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- CN210273979U CN210273979U CN201921881722.7U CN201921881722U CN210273979U CN 210273979 U CN210273979 U CN 210273979U CN 201921881722 U CN201921881722 U CN 201921881722U CN 210273979 U CN210273979 U CN 210273979U
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Abstract
The utility model provides a four-channel ultra-small signal amplifying circuit module, including isolation power supply circuit, positive and negative power supply circuit, reference voltage power supply circuit, accurate operation amplifying circuit and output buffer operation amplifying circuit. The utility model discloses a multichannel amplifier circuit module can be strained the super small-signal of multichannel and make an uproar and enlarge the processing, obtains standard voltage or current signal, and then uses in X ray measuring instrument electrical system, compares in traditional circuit enlarged structure, the utility model discloses it is better to super small-signal noise processing, signal amplification effect, and circuit structure reasonable in design does benefit to realization and overall arrangement simultaneously.
Description
Technical Field
The utility model relates to a relevant technical field of X ray measuring instrument specifically is a four-channel ultra-small signal amplification circuit module.
Background
In the X-ray measuring instrument industry, signals collected by a high-precision sensor are converted into standard signals for the instrument to calculate. Because the signal detected by the sensor is small and cannot be directly applied to the electric control system, the signal detected by the sensor needs to be correspondingly processed to obtain a standard voltage or current signal, and then the standard voltage or current signal is applied to the electric control system. In the traditional amplifying circuit structure, simple amplification of signals is generally realized only through an amplifier, the effects of signal noise, amplification treatment and the like are limited, and the amplifying circuit is applied to an X-ray measuring instrument and is difficult to meet the amplifying requirement of multi-channel ultra-small signals.
SUMMERY OF THE UTILITY MODEL
For solving the not enough of prior art, the utility model discloses combine prior art, set out from practical application, provide a four-channel ultra-small signal amplification circuit module, this module is strained the signal and is made an uproar and enlarge the processing, obtains the voltage or the current signal of standard, and then uses in the electrical system.
The technical scheme of the utility model as follows:
a four-channel ultra-small signal amplification circuit module comprises an isolation power supply circuit, a positive power supply circuit, a negative power supply circuit, a reference voltage power supply circuit, a precise operational amplification circuit and an output buffer operational amplification circuit;
the isolation power supply circuit comprises a capacitor C5 for filtering and a power supply module U1 for converting an input voltage into an isolated double 1:1 power supply voltage output;
the positive and negative power supply circuit comprises a positive and negative power supply output system which is composed of a capacitor C3, a capacitor C4, a capacitor C6 and a capacitor C7 and used for double-path power supply filtering;
the reference voltage source circuit comprises a reference source U2, an amplifier N1, a capacitor C2, a resistor R2, a capacitor C1 and a resistor R1, wherein the reference source U2 is a precise 10V voltage reference, and self-excitation is prevented through the capacitor C1 in a reverse proportional operational amplifier formed by the capacitor C1, the resistor R1, the resistor R2 and the amplifier N1;
the precise operational amplifier circuit is four channels, each channel uses a precise amplifier Ux1 as a core, and a resistor Rx2 and an Rx1 jointly form a reverse proportion operational amplifier, the voltage is divided by the resistor Rx5 and the resistor Rx6, the output is adjusted by the resistor Rx5, and self-excitation is prevented by a capacitor Cx 2;
the output buffer operational amplification circuit is four channels, each channel takes an amplifier Ux2 as a core, a resistor Rx7 and a resistor Rx4 as proportional adjustment resistors, a reference voltage is provided through R x3,
in the above description, X is the X-th channel of the four channels, and X is 1, 2, 3, 4.
Preferably, the power module U1 model is TMA1212D, the reference source U2 model is AD587, the amplifier N1 model is OP07, the precision amplifier Ux1 model is AD549LH, and the amplifier Ux2 model is OP 07.
Preferably, in the isolated power supply circuit, two ends of the capacitor C5 are connected to the pin 1 and the pin 2 of the power supply module U1, respectively.
Preferably, in the positive and negative power supply circuit, two ends of a capacitor C3 are connected to a pin 6 and a pin 5 of the power supply module U1, two ends of a capacitor C6 are connected to a pin 6 and a pin 5 of the power supply module U1, two ends of a capacitor C4 are connected to a pin 5 and a pin 4 of the power supply module U1, and two ends of a capacitor C7 are connected to a pin 5 and a pin 4 of the power supply module U1.
Preferably, in the reference voltage source circuit, pin 2 of the reference source U2 is connected to pin 6 of the power module U1, pin 4 is connected to GND, pin 6 is connected to pin 2 of the amplifier N1 through a resistor R2, two ends of a capacitor C2 are connected to pin 6 and pin 4 of the reference source U2, two ends of a capacitor C1 are connected to pin 6 and pin 2 of the amplifier N1, and two ends of a resistor R1 are connected to pin 6 and pin 2 of the amplifier N1.
Preferably, in the precision operational amplifier circuit, the resistor Rx1 is connected to the pin 2 of the precision amplifier Ux1, the two ends of the capacitor Cx1 are connected to the pin 2 and the pin 3 of the precision amplifier Ux1, the two ends of the resistor Rx2 are connected to the pin 2 and the pin 6 of the precision amplifier Ux1, the two ends of the capacitor Cx2 are connected to the pin 2 and the pin 6 of the precision amplifier Ux1, one end of the resistor Rx5 is connected to the pin 6 of the precision amplifier Ux1, the other end of the resistor Rx6 is connected to the pin 8, the pin 3 and the GND of the precision amplifier Ux1, and the resistor Rx6 is connected to the pin 863 and the GND.
Preferably, in the output buffer operational amplifier circuit, one end of the resistor Rx3 is connected to the reference voltage, the other end is connected to the pin 2 of the amplifier Ux2, one end of the resistor Rx4 is connected to the adjustment pin of the resistor Rx5, the other end is connected to the pin 2 of the amplifier Ux2, and the two ends of the resistor Rx7 are connected to the pin 2 and the pin 6 of the amplifier Ux2, respectively.
The utility model has the advantages that:
the utility model discloses a multichannel amplifier circuit module can be strained the super small-signal of multichannel and make an uproar and enlarge the processing, obtains standard voltage or current signal, and then uses in X ray measuring instrument electrical system, compares in traditional circuit enlarged structure, the utility model discloses it is better to super small-signal noise processing, signal amplification effect, and circuit structure reasonable in design does benefit to realization and overall arrangement simultaneously.
Drawings
FIG. 1 is a circuit diagram related to the isolated power supply circuit, the positive and negative power supply circuits, and the reference voltage power supply circuit of the present invention;
fig. 2 is a circuit diagram related to the precise operational amplifier circuit and the output buffer operational amplifier circuit of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.
As shown in fig. 1 and 2, the utility model comprises the following parts: the device comprises an isolation power supply circuit, a positive power supply circuit, a negative power supply circuit, a reference voltage source circuit, a precise operational amplification circuit and an output buffer operational amplification circuit.
Wherein, keep apart power supply circuit:
as shown in fig. 1, in the isolated power supply circuit, two ends of a capacitor C5 are connected to pin 1 and pin 2 of a power supply module U1, respectively. The circuit is an isolated power supply circuit taking a resistor C5 and a power supply module U1(TMA1212D) as cores, wherein the resistor C5 mainly functions as filtering, and the power supply module U1(TMA1212D) converts an input voltage into an isolated dual 1:1 power supply voltage output. The introduction of interference is mainly suppressed because the amplifier requires a clean power supply when operating.
Positive and negative power supply circuit:
as shown in fig. 1, in the positive-negative power supply circuit, two ends of a capacitor C3 are connected to a pin 6 and a pin 5 of a power supply module U1, two ends of a capacitor C6 are connected to a pin 6 and a pin 5 of a power supply module U1, two ends of a capacitor C4 are connected to a pin 5 and a pin 4 of a power supply module U1, and two ends of a capacitor C7 are connected to a pin 5 and a pin 4 of a power supply module U1. The capacitor C3, the capacitor C4, the capacitor C6 and the capacitor C7 jointly form a positive and negative power output system, and the positive and negative power output system mainly plays a role in filtering a double-path power supply, so that the waveform of the power supply is smooth.
Reference voltage source circuit:
as shown in fig. 1, in the reference voltage source circuit, pin 2 of a reference source U2 is connected to pin 6 of a power module U1, pin 4 is connected to GND, pin 6 is connected to pin 2 of an amplifier N1 through a resistor R2, two ends of a capacitor C2 are respectively connected to pin 6 and pin 4 of a reference source U2, two ends of a capacitor C1 are respectively connected to pin 6 and pin 2 of an amplifier N1, and two ends of a resistor R1 are respectively connected to pin 6 and pin 2 of an amplifier N1. The reference source U2(AD587) is a precise 10V voltage reference, the + VS is 12V, the output is 10.000+/-5mv, the self-excitation is prevented by the C1 in the inverse proportional operational amplifier composed of the capacitor C1, the resistor R1, the resistor R2 and the amplifier N1(OP07), and the Vout is-R1/R2 Vin is Vref.
Precision operational amplifier circuit (four-channel):
as shown in fig. 2, in the precision operational amplifier circuit, a resistor Rx1 is connected to a pin 2 of a precision amplifier Ux1, two ends of a capacitor Cx1 are respectively connected to the pin 2 and the pin 3 of the precision amplifier Ux1, two ends of a resistor Rx2 are respectively connected to the pin 2 and the pin 6 of the precision amplifier Ux1, two ends of a capacitor Cx2 are respectively connected to the pin 2 and the pin 6 of the precision amplifier Ux1, one end of a resistor Rx5 is connected to the pin 6 of the precision amplifier Ux1, the other end of the resistor Rx6 is connected to the resistor Rx6, and a resistor Rx6 is connected to the pin 8, the pin 3 and the GND of the precision amplifier Ux 1.
The circuit is a four-channel circuit, a precision amplifier Ux1(X is 1, 2, 3, 4) AD549LH is used as a core, Rx2 and Rx1 jointly form an inverting proportional operational amplifier, and the amplification factor Vin2 is-Rx 2/Rx1 Vin. Vout is divided by resistors Rx5\ Rx6, and output is adjusted by Rx5, wherein a capacitor Cx2 is an anti-self-excitation capacitor.
Output buffer operational amplification circuit (4-channel):
as shown in fig. 2, in the output buffer operational amplifier circuit, one end of a resistor Rx3 is connected to a reference voltage, the other end is connected to a pin 2 of an amplifier Ux2, one end of a resistor Rx4 is connected to an adjustment pin of the resistor Rx5, the other end is connected to a pin 2 of the amplifier Ux2, and two ends of a resistor Rx7 are connected to a pin 2 and a pin 6 of the amplifier Ux2, respectively. In the circuit, an amplifier Ux2(OP07) is mainly used as a core, resistors Rx7 and Rx4 are proportional adjusting resistors, the amplification factor is Vout-Rx 7/Rx4 Vin, in addition, a resistor Rx3 provides a reference voltage, and Vout-Rx 7/Rx 3:
Vout＝(–Rx7/Rx3*Vref)+(-Rx7/Rx4*Vin2)＝(–Rx7/Rx3*Vref)+(-Rx7/Rx4*((-Rx2/Rx1*Vin)/Rx5+Rx6))。
the amplifying circuit module structure of the embodiment can convert the signals collected by the high-precision sensor into standard signals for the calculation of the instrument so as to solve the problems of ultra-small signal collection and transformation in the field of X-ray measuring instruments.
Claims (7)
1. The utility model provides a four-channel ultra-small signal amplifier circuit module which characterized in that: the device comprises an isolation power supply circuit, a positive power supply circuit, a negative power supply circuit, a reference voltage source circuit, a precise operational amplification circuit and an output buffer operational amplification circuit;
the isolation power supply circuit comprises a capacitor C5 for filtering and a power supply module U1 for converting an input voltage into an isolated double 1:1 power supply voltage output;
the positive and negative power supply circuit comprises a positive and negative power supply output system which is composed of a capacitor C3, a capacitor C4, a capacitor C6 and a capacitor C7 and used for double-path power supply filtering;
the reference voltage source circuit comprises a reference source U2, an amplifier N1, a capacitor C2, a resistor R2, a capacitor C1 and a resistor R1, wherein the reference source U2 is a precise 10V voltage reference, and self-excitation is prevented through the capacitor C1 in a reverse proportional operational amplifier formed by the capacitor C1, the resistor R1, the resistor R2 and the amplifier N1;
the precise operational amplifier circuit is four channels, each channel uses a precise amplifier Ux1 as a core, and a resistor Rx2 and an Rx1 jointly form a reverse proportion operational amplifier, the voltage is divided by the resistor Rx5 and the resistor Rx6, the output is adjusted by the resistor Rx5, and self-excitation is prevented by a capacitor Cx 2;
the output buffer operational amplification circuit is four channels, each channel takes an amplifier Ux2 as a core, a resistor Rx7 and a resistor Rx4 as proportional adjustment resistors, a reference voltage is provided through Rx3,
in the above description, x is the x-th channel of the four channels, and x is 1, 2, 3, 4.
2. The four-channel ultra-small signal amplification circuit module of claim 1, wherein: the power module U1 model is TMA1212D, reference source U2 model is AD587, amplifier N1 model is OP07, accurate amplifier Ux1 model is AD549LH, amplifier Ux2 model is OP 07.
3. The four-channel ultra-small signal amplification circuit module of claim 2, wherein: in the isolated power supply circuit, two ends of a capacitor C5 are respectively connected with a pin 1 and a pin 2 of a power supply module U1.
4. The four-channel ultra-small signal amplification circuit module of claim 3, wherein: in the positive and negative power supply circuit, two ends of a capacitor C3 are respectively connected with a pin 6 and a pin 5 of a power supply module U1, two ends of a capacitor C6 are respectively connected with the pin 6 and the pin 5 of the power supply module U1, two ends of a capacitor C4 are respectively connected with the pin 5 and the pin 4 of the power supply module U1, and two ends of a capacitor C7 are respectively connected with the pin 5 and the pin 4 of the power supply module U1.
5. The four-channel ultra-small signal amplification circuit module of claim 4, wherein: in the reference voltage source circuit, a pin 2 of a reference source U2 is connected with a pin 6 of a power module U1, a pin 4 is connected with GND, the pin 6 is connected with a pin 2 of an amplifier N1 through a resistor R2, two ends of a capacitor C2 are respectively connected with the pin 6 and the pin 4 of a reference source U2, two ends of a capacitor C1 are respectively connected with the pin 6 and the pin 2 of the amplifier N1, and two ends of the resistor R1 are respectively connected with the pin 6 and the pin 2 of an amplifier N1.
6. The four-channel ultra-small signal amplification circuit module of claim 5, wherein: in the precise operational amplification circuit, a resistor Rx1 is connected with a pin 2 of a precise amplifier Ux1, two ends of a capacitor Cx1 are respectively connected with the pin 2 and the pin 3 of the precise amplifier Ux1, two ends of a resistor Rx2 are respectively connected with the pin 2 and the pin 6 of a precise amplifier Ux1, two ends of a capacitor Cx2 are respectively connected with the pin 2 and the pin 6 of the precise amplifier Ux1, one end of a resistor Rx5 is connected with the pin 6 of the precise amplifier Ux1, the other end of the resistor Rx6 is connected with the resistor Rx6 is connected with the pin 8, the pin 3 and the GND of the precise amplifier Ux 1.
7. The four-channel ultra-small signal amplification circuit module of claim 5, wherein:
in the output buffer operational amplification circuit, one end of a resistor Rx3 is connected with a reference voltage, the other end of the resistor Rx3 is connected with a pin 2 of an amplifier Ux2, one end of a resistor Rx4 is connected with an adjusting pin of the resistor Rx5, the other end of the resistor Rx4 is connected with the pin 2 of the amplifier Ux2, and two ends of a resistor Rx7 are respectively connected with the pin 2 and the pin 6 of the amplifier Ux 2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921881722.7U CN210273979U (en) | 2019-11-04 | 2019-11-04 | Four-channel ultra-small signal amplifying circuit module |
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| CN201921881722.7U CN210273979U (en) | 2019-11-04 | 2019-11-04 | Four-channel ultra-small signal amplifying circuit module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115328257A (en) * | 2022-09-14 | 2022-11-11 | 国仪量子(合肥)技术有限公司 | Multi-channel direct current system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115328257A (en) * | 2022-09-14 | 2022-11-11 | 国仪量子(合肥)技术有限公司 | Multi-channel direct current system |
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