CN106685367B - High-performance signal processing module for nuclear power station reactor core nuclear testing system - Google Patents
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3211—Modifications of amplifiers to reduce non-linear distortion in differential amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention belongs to the technical field of instrument control systems of nuclear power plants, and particularly relates to a high-performance signal processing module used for a nuclear core nuclear testing system of a nuclear power plant. The method aims to solve the problem that the normal operation of a reactor core nuclear testing system is affected due to frequent faults of the signal processing module of the existing nuclear power plant. The device is characterized by comprising a differential negative feedback amplifying circuit, an isolation operational amplifier module, a reverse negative feedback circuit and a filter circuit, wherein the external power supply voltage is +/-15 VDC, and the output voltage is a 0-10V direct current voltage signal; the output end of the differential negative feedback amplifying circuit is connected with the input end of the isolation operational amplifier module, the output end of the isolation operational amplifier module is respectively connected with the input end of the reverse negative feedback circuit and the input end of the filter circuit, the output end of the filter circuit is connected with the input end of the differential negative feedback amplifying circuit, and the output end of the isolation operational amplifier module is connected with the input end of the reverse negative feedback circuit. The invention has the advantages of simple circuit form, low cost and high reliability.
Description
Technical Field
The invention belongs to the technical field of instrument control systems of nuclear power plants, and particularly relates to a high-performance signal processing module used for a nuclear core nuclear testing system of a nuclear power plant.
Background
And a BD-IMCH1034 processing module used in the nuclear power plant core nuclear testing system of Qinshan nuclear power is responsible for isolating and amplifying flux signals (low level) output by neutron detectors of the nuclear power plant core nuclear testing system and outputting the flux signals to a power station computer system. The power station operates for twenty years, and the signal processing module fails for several times, so that the normal operation of the reactor core nuclear testing system is affected. In order to avoid measurement faults of a reactor core nuclear measurement system and ensure stable operation of a unit, a technical department of a nuclear power operation management company of China proposes to redevelop a novel processing module on the premise of ensuring unchanged functions. The newly developed processing module has the characteristics of stable performance, high precision, strong anti-interference capability and the like, greatly improves the safety and reliability of the reactor core nuclear testing system, and ensures the long-term stable operation of the power station.
Disclosure of Invention
The invention aims to solve the problem that the normal operation of a reactor core nuclear testing system is affected due to frequent faults of the signal processing module of the type of the existing nuclear power plant, and provides a high-performance signal processing module used by the reactor core nuclear testing system of a nuclear power plant.
The invention is realized in the following way:
a high-performance signal processing module used by a nuclear core testing system of a nuclear power station comprises a differential negative feedback amplifying circuit, an isolation operational amplifier module, a reverse negative feedback circuit and a filter circuit, wherein the external power supply voltage is +/-15 VDC, and the output voltage is a 0-10V direct-current voltage signal; the output end of the differential negative feedback amplifying circuit is connected with the input end of the isolation operational amplifier module, the output end of the isolation operational amplifier module is respectively connected with the input end of the filter circuit and the input end of the reverse negative feedback circuit, and the output end of the filter circuit is connected with the input end of the differential negative feedback amplifying circuit; the differential negative feedback amplifying circuit is used for amplifying the input signal by 50 times; the isolation operational amplifier module is used for isolating the signals sent by the differential negative feedback amplifying circuit, and the isolated signals are input into the reverse negative feedback circuit; the reverse negative feedback circuit is used for amplifying the isolated signal; the filtering circuit is used for filtering the +/-15 VDC power supply converted by the isolation module, and the +/-15 VDC power supply after being processed is used for providing direct current power supply for the differential negative feedback amplifying circuit;
the operational amplifier of the differential negative feedback amplifying circuit uses a precision operational amplifier, the model of the operational amplifier is OPA627BP, the input bias current of the differential negative feedback amplifying circuit is 1pA, the differential input impedance is 1013 omega, the temperature drift is 0.8 mu V/DEG C, the bias voltage is 0.1mV, the operational amplifier is provided with an external zeroing end, a potentiometer can be used for eliminating offset, and the output precision of the amplifier can be improved; the differential negative feedback amplifying circuit is responsible for accurately amplifying an input signal by 50 times and outputting the amplified signal to the isolation operational amplifier module, and the amplification factor is determined by adjusting the position of a pin 2 on the sliding resistor P1;
the two diodes D1 and D2 are reversely connected between the pin 2 and the pin 3 of the differential input end of the differential amplifier OPA627BP to realize a protection function, and the type of the diode used by the D1 and the D2 is BAS116; the input ends of the 3 pin and the 2 pin of the differential amplifier OPA627BP are respectively connected with the protection resistors R1 and R2 in series, and the resistance value is 4.75k; the 2 pin and the 6 pin of the operational amplifier OPA627BP are connected in parallel and are connected with a resistor R4 and a capacitor C3 in a bridging way, the resistance value of R4 is 237k, and the capacitance value of C3 is 0.1uF; the sliding resistor P1 is connected between the 1 pin and the 5 pin of the differential amplifier OPA627BP, the 2 pin of the P1 is connected with the 7 pin of the differential amplifier OPA627BP, and the amplification factor of the differential negative feedback amplifying circuit is changed by moving the position of the 2 pin on the P1.
The isolation operational amplifier module is formed BY taking the isolation operational amplifier AD215BY as a core, the isolation voltage of the isolation operational amplifier module reaches 1500VAC, the gain is unit gain, the nonlinear precision is +/-0.005%, and the P6 is a zeroing potentiometer; the module performs 1:1 isolation output on input signals to prevent mutual interference between front and rear stage circuits; the peripheral device connection of the isolation operational amplifier module is the fixed connection of the AD215BY, the 36-pin connection resistor R9 of the AD215BY, the other end of the R9 is connected to the 2-pin of the sliding end of the sliding rheostat P6, the P6 is a sliding rheostat, the 3-pin of the P6 is connected with the ground end of the board card GND2, the 1-pin of the P6 is connected with the R8, the other end of the R8 is connected with the positive end power supply +15V of the board card, the resistance value of the R9 is 1M, the resistance value of the R8 is 100K, and the resistance value range of the P6 is 0-10K.
The reverse negative feedback circuit is formed by taking the precise operational amplifier OPA627BP as a core, a sliding resistor P2 is connected between the 1 pin and the 5 pin of the operational amplifier OPA627BP in a bridging way, and the zero point of the operational amplifier OPA627BP is regulated by regulating the position of the 2 pin of the P2; the 2-pin input end of the operational amplifier OPA627BP is connected with a sliding resistor P3 and a resistor R5 in series, the gain of the circuit can be adjusted by adjusting the resistance value of P3, the resistance value range of P3 is 1-1K, the resistance value of R5 is 4.22K, the 6-pin of the operational amplifier OPA627BP is an output end, the output end is connected with a triode Q1 in series, the model is 2N2219A, and the emitter E end of the Q1 is the output end of the feedback circuit; the 2 pin of the operational amplifier OPA627BP and the emitter of the triode 2N2219A are connected across the sliding resistor P4, the resistance range of the P4 is 0-50K, and the precision is 5%; p3 and P4 are adjusted simultaneously, so that the gain of the operational amplifier OPA627BP is amplified to be 1-10 times unequal, and the output voltage is 0-10 VDC voltage signals unequal; the 2 pin of the operational amplifier OPA627BP and the emitter E end of the triode Q1 are connected across the polar capacitor C1, the capacitance value is 1.7uF, the capacitance value is 0.01uF, and the capacitor C1 and the capacitor C2 are connected in parallel.
The filter circuit is mainly used for carrying out filter processing on the +/-15V piezoelectric signals generated by the isolation circuit and providing stable direct current power supply for the differential negative feedback amplifying circuit;
the filtering circuit is formed by taking BNX025H01 type filtering modules F1 and F2 as cores, the modules are responsible for filtering the +/-15 VDC power supply output after DC-DC conversion of the isolation module U1, and the +/-15 VDC power supply is output after processing and is used for providing stable direct current power supply for the differential negative feedback amplifying circuit;
the input ends of F1 and F2 are respectively a B end and a PSG end, and the output ends are respectively a CB end and a CG end;
the input ends of F1 and F2 are respectively connected with voltages Viso+15V and Viso-15V generated by the isolation module, viso+15V is connected with the B end of F1, viso-15V is connected with the B end of F2, polar capacitors C6 and C7 are respectively bridged between the B ends of F1 and F2 and the PSG end, the capacitance value is 6.8uF, the highest voltage is 50V, the positive electrode of C6 is connected with the B end, and the positive electrode of C7 is connected with the PSG end;
the output end CB of the F1 is respectively connected with a 560uH inductor, and then the ground GND1 end is connected with a polar capacitor C12 and a capacitor C14 in parallel; the output terminal CB of F2 is respectively connected with 560uH inductance and then connects the ground GND1 terminal in parallel with the polar capacitor C13 and the capacitor C15.
The beneficial effects of the invention are as follows:
the invention comprises a differential negative feedback amplifying circuit, an isolation operational amplifier module, a reverse negative feedback circuit and a filter circuit. The invention has the advantages of simple circuit form, low cost and high reliability, greatly improves the safety and reliability of the reactor core nuclear testing system, and ensures the long-term stable operation of the power station.
Drawings
FIG. 1 is a schematic diagram of a high performance signal processing module for use in a nuclear power plant core testing system of the present invention;
FIG. 2 is a schematic diagram of a differential negative feedback amplification circuit of a high performance signal processing module used in a nuclear power plant core testing system of the present invention;
FIG. 3 is a schematic diagram of an isolation op-amp module of a high performance signal processing module for use in a nuclear power plant core testing system of the present invention;
FIG. 4 is a schematic diagram of a reverse negative feedback circuit of a high performance signal processing module used in a nuclear power plant core testing system of the present invention;
fig. 5 is a schematic diagram of a filter circuit of a high performance signal processing module used in a nuclear power plant core testing system of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in FIG. 1, the high-performance signal processing module used by the nuclear power station reactor core testing system comprises a differential negative feedback amplifying circuit, an isolation operational amplifier module, a reverse negative feedback circuit and a filter circuit, wherein the external power supply voltage is + -15 VDC, and the output voltage is 0-10V direct current voltage signal. The output end of the differential negative feedback amplifying circuit is connected with the input end of the isolation operational amplifier module, the output end of the isolation operational amplifier module is respectively connected with the input end of the filter circuit and the input end of the reverse negative feedback circuit, and the output end of the filter circuit is connected with the input end of the differential negative feedback amplifying circuit. The differential negative feedback amplifying circuit is used for amplifying the input signal by 50 times. The isolation operational amplifier module is used for isolating the signals sent by the differential negative feedback amplifying circuit, and the isolated signals are input into the reverse negative feedback circuit. The reverse negative feedback circuit is used for amplifying the isolated signal. The filtering circuit is used for filtering the + -15 VDC power supply converted by the isolation module, and the + -15 VDC power supply after being processed is used for providing direct current power supply for the differential negative feedback amplifying circuit.
As shown in FIG. 2, the operational amplifier of the differential negative feedback amplifying circuit uses a precision operational amplifier, the model of the operational amplifier is OPA627BP, the input bias current of the differential negative feedback amplifying circuit is 1pA, the differential input impedance is 1013 Ω, the temperature drift is 0.8 μV/DEG C, the bias voltage is 0.1mV, the operational amplifier is provided with an external zero-setting end, a potentiometer can be used for eliminating offset, and the output precision of the amplifier can be improved. The differential negative feedback amplifying circuit is responsible for accurately amplifying an input signal by 50 times and outputting the amplified signal to the isolation operational amplifier module, and the amplification factor is determined by adjusting the position of the 2 pins on the sliding resistor P1.
The protection function is realized by reversely connecting two diodes D1 and D2 between the pins 2 and 3 of the differential input end of the differential amplifier OPA627BP, and the type of the diode used by the D1 and the D2 is BAS116. The 3-pin and 2-pin input ends of the differential amplifier OPA627BP are respectively connected in series with protective resistors R1 and R2, and the resistance value is 4.75k. The 2 pin and the 6 pin of the operational amplifier OPA627BP are connected in parallel and are connected with a resistor R4 and a capacitor C3, the resistance value of the R4 is 237k, and the capacitance value of the C3 is 0.1uF. The sliding resistor P1 is connected between the 1 pin and the 5 pin of the differential amplifier OPA627BP, the 2 pin of the P1 is connected with the 7 pin of the differential amplifier OPA627BP, and the amplification factor of the differential negative feedback amplifying circuit is changed by moving the position of the 2 pin on the P1.
As shown in fig. 3, the isolation operational amplifier module has isolation function and generates a voltage signal of + -15V, which is filtered and supplied to the differential negative feedback amplifying circuit.
The isolation operational amplifier module is formed BY taking an isolation operational amplifier AD215BY as a core, the isolation voltage of the isolation operational amplifier module reaches 1500VAC, the gain is unit gain, the nonlinear precision is +/-0.005%, and the P6 is a zeroing potentiometer. The module performs 1:1 isolation output on input signals, and prevents mutual interference between front and rear stage circuits. The peripheral device connection of the isolation operational amplifier module is the fixed connection of the AD215BY, the 36-pin connection resistor R9 of the AD215BY, the other end of the R9 is connected to the 2-pin of the sliding end of the sliding rheostat P6, the P6 is a sliding rheostat, the 3-pin of the P6 is connected with the ground end of the board card GND2, the 1-pin of the P6 is connected with the R8, the other end of the R8 is connected with the positive end power supply +15V of the board card, the resistance value of the R9 is 1M, the resistance value of the R8 is 100K, and the resistance value range of the P6 is 0-10K.
As shown in fig. 4, the reverse negative feedback circuit is formed by using a precision operational amplifier OPA627BP as a core, a sliding resistor P2 is connected between the 1 pin and the 5 pin of the operational amplifier OPA627BP in a bridging manner, and the zero point of the operational amplifier OPA627BP is adjusted by adjusting the position of the 2 pin of P2. The 2-pin input end of the operational amplifier OPA627BP is connected with a sliding resistor P3 and a resistor R5 in series, the gain of the circuit can be adjusted by adjusting the resistance value of P3, the resistance value range of P3 is 1-1K, the resistance value of R5 is 4.22K, the 6-pin of the operational amplifier OPA627BP is an output end, the output end is connected with a triode Q1 in series, the model is 2N2219A, and the emitter E end of the Q1 is the output end of the feedback circuit. The 2 pin of the operational amplifier OPA627BP and the emitter of the triode 2N2219A are connected across the sliding resistor P4, the resistance range of the P4 is 0-50K, and the precision is 5%. P3 and P4 are adjusted simultaneously, so that the gain of the operational amplifier OPA627BP is amplified to be 1-10 times unequal, and the output voltage is 0-10 VDC voltage signals unequal. The 2 pin of the operational amplifier OPA627BP and the emitter E end of the triode Q1 are connected across the polar capacitor C1, the capacitance value is 1.7uF, the capacitance value is 0.01uF, and the capacitor C1 and the capacitor C2 are connected in parallel.
As shown in FIG. 5, the filter circuit is used for filtering the + -15V piezoelectric signal generated by the isolation circuit to provide stable DC power for the differential negative feedback amplifying circuit.
The filtering circuit is formed by taking BNX025H01 type filtering modules F1 and F2 as cores, the modules are responsible for filtering the + -15 VDC power supply output after DC-DC conversion of the isolation module U1, and the + -15 VDC power supply is output after processing and is used for providing stable direct current power supply for the differential negative feedback amplifying circuit.
The input ends of F1 and F2 are respectively a B end and a PSG end, and the output ends are respectively a CB end and a CG end.
The input ends of F1 and F2 are respectively connected with voltages Viso+15V and Viso-15V generated by the isolation module, viso+15V is connected with the B end of F1, viso-15V is connected with the B end of F2, polar capacitors C6 and C7 are respectively bridged between the B ends of F1 and F2 and the PSG end, the capacitance value is 6.8uF, the highest voltage is 50V, the positive electrode of C6 is connected with the B end, and the positive electrode of C7 is connected with the PSG end.
The output end CB of the F1 is respectively connected with a 560uH inductor, and then the ground GND1 end is connected with a polar capacitor C12 and a capacitor C14 in parallel; the output terminal CB of F2 is respectively connected with 560uH inductance and then connects the ground GND1 terminal in parallel with the polar capacitor C13 and the capacitor C15.
The embodiment of the present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The invention may be practiced otherwise than as specifically described in the specification.
Claims (4)
1. A high performance signal processing module that nuclear power station reactor core nuclear survey system used, its characterized in that:
the device comprises a differential negative feedback amplifying circuit, an isolation operational amplifier module, a reverse negative feedback circuit and a filter circuit, wherein the external power supply voltage is +/-15 VDC, and the output voltage is a 0-10V direct current voltage signal; the output end of the differential negative feedback amplifying circuit is connected with the input end of the isolation operational amplifier module, the output end of the isolation operational amplifier module is respectively connected with the input end of the filter circuit and the input end of the reverse negative feedback circuit, and the output end of the filter circuit is connected with the input end of the differential negative feedback amplifying circuit; the differential negative feedback amplifying circuit is used for amplifying the input signal by 50 times;
the isolation operational amplifier module is used for isolating the signals sent by the differential negative feedback amplifying circuit, and the isolated signals are input into the reverse negative feedback circuit; the reverse negative feedback circuit is used for amplifying the isolated signal; the filtering circuit is used for filtering the +/-15 VDC power supply converted by the isolation module, and the +/-15 VDC power supply after being processed is used for providing direct current power supply for the differential negative feedback amplifying circuit;
the operational amplifier of the differential negative feedback amplifying circuit uses a precision operational amplifier, the model of the operational amplifier is OPA627BP, the input bias current of the differential negative feedback amplifying circuit is 1pA, the differential input impedance is 1013 omega, the temperature drift is 0.8 mu V/DEG C, the bias voltage is 0.1mV, the operational amplifier is provided with an external zeroing end, a potentiometer can be used for eliminating offset, and the output precision of the amplifier can be improved; the differential negative feedback amplifying circuit is responsible for accurately amplifying an input signal by 50 times and outputting the amplified signal to the isolation operational amplifier module, and the amplification factor is determined by adjusting the position of a pin 2 on the sliding resistor P1;
the two diodes D1 and D2 are reversely connected between the pin 2 and the pin 3 of the differential input end of the differential amplifier OPA627BP to realize a protection function, and the type of the diode used by the D1 and the D2 is BAS116; the input ends of the 3 pin and the 2 pin of the differential amplifier OPA627BP are respectively connected with the protection resistors R1 and R2 in series, and the resistance value is 4.75k; the 2 pin and the 6 pin of the operational amplifier OPA627BP are connected in parallel and are connected with a resistor R4 and a capacitor C3 in a bridging way, the resistance value of R4 is 237k, and the capacitance value of C3 is 0.1uF; the sliding resistor P1 is connected between the 1 pin and the 5 pin of the differential amplifier OPA627BP, the 2 pin of the P1 is connected with the 7 pin of the differential amplifier OPA627BP, and the amplification factor of the differential negative feedback amplifying circuit is changed by moving the position of the 2 pin on the P1.
2. The high performance signal processing module for use in a nuclear power plant core testing system of claim 1, wherein:
the isolation operational amplifier module is formed BY taking an isolation operational amplifier AD215BY as a core, the isolation voltage of the isolation operational amplifier module reaches 1500VAC, the gain is unit gain, the nonlinear precision is +/-0.005%, and the P6 is a zeroing potentiometer; the module performs 1:1 isolation output on input signals to prevent mutual interference between front and rear stage circuits; the peripheral device connection of the isolation operational amplifier module is the fixed connection of the AD215BY, the 36-pin connection resistor R9 of the AD215BY, the other end of the R9 is connected to the 2-pin of the sliding end of the sliding rheostat P6, the P6 is a sliding rheostat, the 3-pin of the P6 is connected with the ground end of the board card GND2, the 1-pin of the P6 is connected with the R8, the other end of the R8 is connected with the positive end power supply +15V of the board card, the resistance value of the R9 is 1M, the resistance value of the R8 is 100K, and the resistance value range of the P6 is 0-10K.
3. The high performance signal processing module for use in a nuclear power plant core testing system of claim 2, wherein:
the reverse negative feedback circuit is formed by taking a precise operational amplifier OPA627BP as a core, a sliding resistor P2 is connected between a 1 pin and a 5 pin of the operational amplifier OPA627BP in a bridging mode, and the zero point of the operational amplifier OPA627BP is regulated by regulating the position of a 2 pin of the P2; the 2-pin input end of the operational amplifier OPA627BP is connected with a sliding resistor P3 and a resistor R5 in series, the gain of the circuit can be adjusted by adjusting the resistance value of P3, the resistance value range of P3 is 1-1K, the resistance value of R5 is 4.22K, the 6-pin of the operational amplifier OPA627BP is an output end, the output end is connected with a triode Q1 in series, the model is 2N2219A, and the emitter E end of the Q1 is the output end of the feedback circuit; the 2 pin of the operational amplifier OPA627BP and the emitter of the triode 2N2219A are connected across the sliding resistor P4, the resistance range of the P4 is 0-50K, and the precision is 5%; p3 and P4 are adjusted simultaneously, so that the gain of the operational amplifier OPA627BP is amplified to be 1-10 times unequal, and the output voltage is 0-10 VDC voltage signals unequal; the 2 pin of the operational amplifier OPA627BP and the emitter E end of the triode Q1 are connected across the polar capacitor C1, the capacitance value is 1.7uF, the capacitance value is 0.01uF, and the capacitor C1 and the capacitor C2 are connected in parallel.
4. A high performance signal processing module for use in a nuclear power plant core testing system as defined in claim 3, wherein:
the filter circuit is used for filtering the + -15V piezoelectric signals generated by the isolation circuit and providing stable direct current power supply for the differential negative feedback amplifying circuit;
the filtering circuit is formed by taking BNX025H01 type filtering modules F1 and F2 as cores, the modules are responsible for filtering the +/-15 VDC power supply output after DC-DC conversion of the isolation module U1, and the +/-15 VDC power supply is output after processing and is used for providing stable direct current power supply for the differential negative feedback amplifying circuit;
the input ends of F1 and F2 are respectively a B end and a PSG end, and the output ends are respectively a CB end and a CG end;
the input ends of F1 and F2 are respectively connected with voltages Viso+15V and Viso-15V generated by the isolation module, viso+15V is connected with the B end of F1, viso-15V is connected with the B end of F2, polar capacitors C6 and C7 are respectively bridged between the B ends of F1 and F2 and the PSG end, the capacitance value is 6.8uF, the highest voltage is 50V, the positive electrode of C6 is connected with the B end, and the positive electrode of C7 is connected with the PSG end;
the output end CB of the F1 is respectively connected with a 560uH inductor, and then the ground GND1 end is connected with a polar capacitor C12 and a capacitor C14 in parallel; the output terminal CB of F2 is respectively connected with 560uH inductance and then connects the ground GND1 terminal in parallel with the polar capacitor C13 and the capacitor C15.
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| CN102769435A (en) * | 2011-05-06 | 2012-11-07 | 北京蔚蓝仕科技有限公司 | Differential amplifying circuit capable of automatically adjusting amplification factor |
| CN102684146A (en) * | 2012-04-07 | 2012-09-19 | 三科电器集团有限公司 | Zero-lacking alarm protective circuit of three-phase voltage stabilizer |
| CN105556834A (en) * | 2013-09-13 | 2016-05-04 | 阿尔卑斯电气株式会社 | Amplification circuit |
| CN206272577U (en) * | 2016-11-28 | 2017-06-20 | 中核核电运行管理有限公司 | The high performance signal processing module that a kind of nuclear power station reactor core Nuclear measurement system is used |
| CN206272572U (en) * | 2016-11-28 | 2017-06-20 | 中核核电运行管理有限公司 | The high performance signal processing module that nuclear power station reactor core Nuclear measurement system is used |
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