CN212229184U - Nuclear pulse signal distortion-free transmission module - Google Patents
Nuclear pulse signal distortion-free transmission module Download PDFInfo
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- CN212229184U CN212229184U CN202021002819.9U CN202021002819U CN212229184U CN 212229184 U CN212229184 U CN 212229184U CN 202021002819 U CN202021002819 U CN 202021002819U CN 212229184 U CN212229184 U CN 212229184U
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Abstract
The utility model discloses a nuclear pulse signal distortionless transmission module, which comprises a shell and an electronic circuit board arranged in the shell, wherein a nuclear pulse signal distortionless transmission circuit is integrated on the electronic circuit board; the distortion-free transmission circuit of the nuclear pulse signals comprises an operational amplifier U1, an operational amplifier U2A and an operational amplifier U2B, wherein the output end of the operational amplifier U1 is divided into two paths, one path is connected with the inverting input end of the operational amplifier U1 through an adjustable potentiometer W1 and a resistor R4, and the other path is followed and output through the operational amplifier U2A and the operational amplifier U2B. The utility model discloses a make into the module with nuclear pulse signal distortionless transmission circuit, after the input signal passed through operational amplifier U1 amplitude of adjustment, followed the output by operational amplifier U2A and operational amplifier U2B, the adjustable potentiometre W1 of deuterogamy regulation prevents that nuclear pulse signal from appearing the distortion under the influence of signal transmission cable, guarantees nuclear pulse signal's correct transmission, and is simple easy-to-use.
Description
Technical Field
The utility model belongs to the technical field of nuclear electronics, concretely relates to nuclear pulse signal distortionless transmission module.
Background
With the development of nuclear technology and application in China, nuclear instruments and meters are widely applied to the field of nuclear industry. The nuclear radiation detector is used as an important component of a nuclear instrument and meter and plays a role in collecting, converting and amplifying nuclear radiation signals. When the nuclear radiation signal is limited by factors such as a site, a field physical environment or a probe volume, and the signal cannot be completely processed in the probe or in a probe arrangement site, the signal needs to be processed again after being transmitted by a signal transmission cable. When the transmission distance is long, the nuclear pulse signal is influenced by the signal transmission cable, and the signal is distorted.
Therefore, before the signal is transmitted through the signal transmission cable, a circuit is needed to avoid the signal from being distorted after being transmitted through the signal transmission cable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough among the prior art is directed against, a nuclear pulse signal distortionless transmission module is provided, a structure is simple, and reasonable design, therefore, the clothes hanger is strong in practicability, make into the module through making into nuclear pulse signal distortionless transmission circuit, input signal passes through behind the preliminary adjustment range of operational amplifier U1, follow the output by operational amplifier U2A and operational amplifier U2B, deuterogamy and adjust adjustable potentiometre W1, prevent that nuclear pulse signal from appearing the distortion under the influence of signal transmission cable, guarantee nuclear pulse signal's correct transmission, it is simple easy-to-use.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a nuclear pulse signal distortionless transmission module which characterized in that: the nuclear pulse signal distortionless transmission circuit is integrated on the electronic circuit board; the shell is provided with a positive power supply pin, a negative power supply pin, a signal input pin, a first impedance adjusting pin, a second impedance adjusting pin, a third impedance adjusting pin, a fourth impedance adjusting pin and a grounding pin;
the distortion-free transmission circuit of the nuclear pulse signals comprises an operational amplifier U1, an operational amplifier U2A and an operational amplifier U2B, wherein the inverting input end of the operational amplifier U1 is connected with one end of a resistor R5, the other end of the resistor R5 is connected with a signal input pin, and the non-inverting input end of the operational amplifier U1 is connected with a grounding pin through a resistor R1; the output end of the operational amplifier U1 is divided into three paths, one path is connected with the sliding end of an adjustable potentiometer W1, one fixed end of the adjustable potentiometer W1 is connected with the inverting input end of the operational amplifier U1 through a resistor R4, the other path is connected with the inverting input end of the operational amplifier U2A, and the third path is connected with the inverting input end of the operational amplifier U2B; the non-inverting input end of the operational amplifier U2A is connected with the non-inverting input end of the operational amplifier U2B; the output end of the operational amplifier U2A is connected with the output end of the operational amplifier U2B, the connection end of the output end of the operational amplifier U2A and the output end of the operational amplifier U2B is divided into two paths, one path is connected with one end of a resistor R2, the other path is connected with one end of a resistor R3, the other end of the resistor R2 is connected with a first impedance adjusting pin through a 1 st pin of a first two-end interface P1, a 2 nd pin of the first two-end interface P1 is connected with a second impedance adjusting pin, and the second impedance adjusting pin is connected with a grounding pin; the other end of the resistor R3 is connected with a third impedance adjusting pin through a 1 st pin of a second two-end interface P2, a 2 nd pin of a second two-end interface P2 is connected with a fourth impedance adjusting pin, and the fourth impedance adjusting pin is the output end of the distortion-free transmission circuit for the nuclear pulse signals; the shell is also provided with a resistance adjusting through hole matched with the adjustable potentiometer W1.
The distortion-free transmission module for the nuclear pulse signals is characterized in that: the operational amplifier U1 is an AD8065 operational amplifier.
The distortion-free transmission module for the nuclear pulse signals is characterized in that: the operational amplifier U1 is powered by dual power sources.
The distortion-free transmission module for the nuclear pulse signals is characterized in that: the 7 th pin of the operational amplifier U1 is connected with a positive power supply pin, the positive power supply pin is connected with a 5V power supply, the 4 th pin of the operational amplifier U1 is connected with a negative power supply pin, and the negative power supply pin is connected with a-5V power supply.
The distortion-free transmission module for the nuclear pulse signals is characterized in that: the operational amplifier U2A and the operational amplifier U2B both adopt an operational amplifier with the model number AD 746.
The distortion-free transmission module for the nuclear pulse signals is characterized in that: the 8 th pin of the operational amplifier U2A is connected to the positive power supply pin, and the 4 th pin of the operational amplifier U2B is connected to the negative power supply pin.
The distortion-free transmission module for the nuclear pulse signals is characterized in that: the shell is a metal shell.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses a make into the module with nuclear pulse signal distortionless transmission circuit, after the input signal passed through the preliminary adjustment range of operational amplifier U1, followed the output by operational amplifier U2A and operational amplifier U2B, the adjustable potentiometre W1 of deuterogamy regulation prevents that nuclear pulse signal from appearing the distortion under the influence of signal transmission cable, guarantees nuclear pulse signal's correct transmission, and is simple easy-to-use.
2. The utility model discloses a set up adjustable potentiometre W1, the signal amplitude of compensation signal transmission cable terminal output is adjusted to the resistance that adjustment adjustable potentiometre W1 inserted in the circuit, makes nuclear pulse signal output amplitude adjustable behind the signal transmission cable, and output signal is more accurate.
3. The utility model discloses a set up first both ends interface P1 and second both ends interface P2 and make the characteristic impedance of signal transmission cable adjustable, make nuclear pulse signal distortionless transmission circuit is applicable to and is connected with different signal transmission cables, and application scope is wider.
To sum up, the utility model discloses simple structure, reasonable in design, the practicality is strong, through making into the module with nuclear pulse signal distortionless transmission circuit, after the input signal passed through operational amplifier U1 preliminary adjustment range, followed the output by operational amplifier U2A and operational amplifier U2B, the adjustable potentiometre W1 of deuterogamy regulation prevents that nuclear pulse signal from appearing the distortion under the influence of signal transmission cable, guarantees nuclear pulse signal's correct transmission, simple easy-to-use.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a rear view of fig. 1.
Fig. 3 is a schematic circuit diagram of the present invention.
Fig. 4 is a schematic circuit diagram of the circuit of fig. 3 after the resistor R6 and the resistor R7 are connected.
Description of reference numerals:
1-a positive power supply pin; 2-a signal input pin; 3-a first impedance adjustment pin;
4-a second impedance adjustment pin; 5-a third impedance adjustment pin; 6-a fourth impedance adjustment pin;
7-a ground pin; 8-a negative supply pin; 9-a housing;
10-resistance tuning vias.
Detailed Description
As shown in fig. 1, fig. 2 and fig. 3, the present invention includes a housing 9 and an electronic circuit board disposed in the housing 9, wherein the electronic circuit board is integrated with a transmission circuit for transmitting the nuclear pulse signal without distortion; the shell 9 is provided with a positive power supply pin 1, a negative power supply pin 8, a signal input pin 2, a first impedance adjusting pin 3, a second impedance adjusting pin 4, a third impedance adjusting pin 5, a fourth impedance adjusting pin 6 and a grounding pin 7;
the distortion-free transmission circuit of the nuclear pulse signals comprises an operational amplifier U1, an operational amplifier U2A and an operational amplifier U2B, wherein the inverting input end of the operational amplifier U1 is connected with one end of a resistor R5, the other end of the resistor R5 is connected with a signal input pin 2, and the non-inverting input end of the operational amplifier U1 is connected with a grounding pin 7 through a resistor R1; the output end of the operational amplifier U1 is divided into three paths, one path is connected with the sliding end of an adjustable potentiometer W1, one fixed end of the adjustable potentiometer W1 is connected with the inverting input end of the operational amplifier U1 through a resistor R4, the other path is connected with the inverting input end of the operational amplifier U2A, and the third path is connected with the inverting input end of the operational amplifier U2B; the non-inverting input end of the operational amplifier U2A is connected with the non-inverting input end of the operational amplifier U2B; the output end of the operational amplifier U2A is connected with the output end of the operational amplifier U2B, the connection end of the output end of the operational amplifier U2A and the output end of the operational amplifier U2B is divided into two paths, one path is connected with one end of a resistor R2, the other path is connected with one end of a resistor R3, the other end of the resistor R2 is connected with a first impedance adjusting pin 3 through a 1 st pin of a first two-end interface P1, a 2 nd pin of the first two-end interface P1 is connected with a second impedance adjusting pin 4, and the second impedance adjusting pin 4 is connected with a grounding pin 7; the other end of the resistor R3 is connected to the third impedance adjusting pin 5 through the 1 st pin of the second two-end interface P2, the 2 nd pin of the second two-end interface P2 is connected to the fourth impedance adjusting pin 6, and the fourth impedance adjusting pin 6 is the output end of the distortion-free transmission circuit for nuclear pulse signals; the shell 9 is further provided with a resistance adjusting through hole 10 matched with the adjustable potentiometer W1.
It should be noted that the electronic circuit board is packaged in the housing 9, the housing 9 is a metal housing, and the metal housing is grounded to avoid electromagnetic interference;
it should be noted that the signal input pin 2 is connected with a wire core of the signal transmission cable, and the adjustable potentiometer W1 is arranged to adjust the resistance value of the adjustable potentiometer W1 in the access circuit to adjust and compensate the signal amplitude output by the terminal of the signal transmission cable, so that the output amplitude of the nuclear pulse signal after passing through the signal transmission cable is adjustable, and the output signal is more accurate;
it should be noted that, a resistance adjustment through hole 10 for matching with the adjustable potentiometer W1 is further formed on the housing 9, and during actual use, the adjustable potentiometer W1 is adjusted through the resistance adjustment through hole 10;
it should be noted that after the amplitude of the input signal is primarily adjusted by the operational amplifier U1, the input signal is output by the operational amplifier U2A and the operational amplifier U2B, and then the adjustable potentiometer W1 is adjusted, so that the nuclear pulse signal is prevented from being distorted under the influence of the signal transmission cable, the correct transmission of the nuclear pulse signal is ensured, and the input signal is simple and easy to use by being manufactured into a circuit module;
it should be noted that, in actual use, the resistance of the resistor R1 is 500 Ω, the resistances of the resistor R2 and the resistor R3 are both 50 Ω, the resistances of the resistor R4 and the resistor R5 are 1k Ω, and the resistance of the adjustable potentiometer W1 is 5k Ω;
in this embodiment, when the characteristic impedance Zc of the standard signal transmission cable is 50 Ω, the jumper cap is used to short-circuit the first impedance adjusting pin 3 and the second impedance adjusting pin 4, and the jumper cap is used to short-circuit the third impedance adjusting pin 5 and the fourth impedance adjusting pin 6, at this time, the resistance values of the resistor R2 and the resistor R3 are the characteristic impedance value of the transmission cable;
when the characteristic impedance Zc of the standard signal transmission cable is greater than 50 Ω, one end of a resistor R6 is connected to the first impedance adjustment pin 3, the other end of a resistor R6 is connected to the second impedance adjustment pin 4, so that the resistor R2 and the resistor R6 are connected in series, one end of a resistor R7 is connected to the third impedance adjustment pin 5, the other end of a resistor R7 is connected to the fourth impedance adjustment pin 6, so that the resistor R3 and the resistor R7 are connected in series, and R6 ═ R7 ═ Zc-50 Ω;
in this embodiment, when the characteristic impedance value Zc of the standard signal transmission cable is 75 Ω, as shown in fig. 4, the resistance values of the resistor R6 and the resistor R7 are both 25 Ω;
the first two-end interface P1 and the second two-end interface P2 are arranged to adjust the characteristic impedance of the signal transmission cable, so that the nuclear pulse signal distortionless transmission circuit is suitable for being connected with different signal transmission cables, and the application range is wider.
In this embodiment, the operational amplifier U1 is an AD8065 operational amplifier.
In this embodiment, the operational amplifier U1 is powered by dual power sources.
In this embodiment, the 7 th pin of the operational amplifier U1 is connected to the positive power pin 1, the positive power pin 1 is connected to the 5V power supply, the 4 th pin of the operational amplifier U1 is connected to the negative power pin 8, and the negative power pin 8 is connected to the-5V power supply.
In this embodiment, the operational amplifiers U2A and U2B are both AD746 type operational amplifiers.
In this embodiment, the 8 th pin of the operational amplifier U2A is connected to the positive power pin 1, the positive power pin 1 is connected to the 5V power supply, the 4 th pin of the operational amplifier U2B is connected to the negative power pin 8, and the negative power pin 8 is connected to the-5V power supply.
The utility model discloses when using, the nuclear radiation signal with nuclear radiation detector probe output is connected with signal input pin 2, simultaneously with fourth impedance adjustment pin 6 and signal transmission cable's sinle silk connection, after the nuclear radiation signal passes through operational amplifier U1 preliminary adjustment range, follow the output by operational amplifier U2A and operational amplifier U2B, rethread resistance regulation through-hole 10 adjusts adjustable potentiometer W1, prevent that nuclear pulse signal from appearing the distortion under the influence of signal transmission cable, guarantee nuclear pulse signal's correct transmission; the first two-end interface P1 and the second two-end interface P2 are respectively connected with resistors in series, or the first two-end interface P1 and the second two-end interface P2 are respectively short-circuited, so that the characteristic impedance of the signal transmission cable can be adjusted, and the signal transmission cable is suitable for being connected with different signal transmission cables.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (7)
1. The utility model provides a nuclear pulse signal distortionless transmission module which characterized in that: the device comprises a shell (9) and an electronic circuit board arranged in the shell (9), wherein a nuclear pulse signal distortion-free transmission circuit is integrated on the electronic circuit board; the shell (9) is provided with a positive power supply pin (1), a negative power supply pin (8), a signal input pin (2), a first impedance adjusting pin (3), a second impedance adjusting pin (4), a third impedance adjusting pin (5), a fourth impedance adjusting pin (6) and a grounding pin (7);
the distortion-free transmission circuit of the nuclear pulse signals comprises an operational amplifier U1, an operational amplifier U2A and an operational amplifier U2B, wherein the inverting input end of the operational amplifier U1 is connected with one end of a resistor R5, the other end of the resistor R5 is connected with a signal input pin (2), and the non-inverting input end of the operational amplifier U1 is connected with a grounding pin (7) through a resistor R1; the output end of the operational amplifier U1 is divided into three paths, one path is connected with the sliding end of an adjustable potentiometer W1, one fixed end of the adjustable potentiometer W1 is connected with the inverting input end of the operational amplifier U1 through a resistor R4, the other path is connected with the inverting input end of the operational amplifier U2A, and the third path is connected with the inverting input end of the operational amplifier U2B; the non-inverting input end of the operational amplifier U2A is connected with the non-inverting input end of the operational amplifier U2B; the output end of the operational amplifier U2A is connected with the output end of the operational amplifier U2B, the connection end of the output end of the operational amplifier U2A and the output end of the operational amplifier U2B is divided into two paths, one path is connected with one end of a resistor R2, the other path is connected with one end of a resistor R3, the other end of the resistor R2 is connected with a first impedance adjusting pin (3) through a 1 st pin of a first two-end interface P1, a 2 nd pin of the first two-end interface P1 is connected with a second impedance adjusting pin (4), and the second impedance adjusting pin (4) is connected with a grounding pin (7); the other end of the resistor R3 is connected with a third impedance adjusting pin (5) through a 1 st pin of a second two-end interface P2, a 2 nd pin of a second two-end interface P2 is connected with a fourth impedance adjusting pin (6), and the fourth impedance adjusting pin (6) is the output end of the distortion-free transmission circuit of the nuclear pulse signals; the shell (9) is also provided with a resistance adjusting through hole (10) which is used for being matched with the adjustable potentiometer W1.
2. The undistorted nuclear pulse signal transmission module of claim 1, wherein: the operational amplifier U1 is an AD8065 operational amplifier.
3. The undistorted nuclear pulse signal transmission module of claim 2, wherein: the operational amplifier U1 is powered by dual power sources.
4. The undistorted nuclear pulse signal transmission module of claim 3, wherein: the 7 th pin of the operational amplifier U1 is connected with a positive power supply pin (1), the positive power supply pin (1) is connected with a 5V power supply, the 4 th pin of the operational amplifier U1 is connected with a negative power supply pin (8), and the negative power supply pin (8) is connected with a-5V power supply.
5. The undistorted nuclear pulse signal transmission module of claim 4, wherein: the operational amplifier U2A and the operational amplifier U2B both adopt an operational amplifier with the model number AD 746.
6. The undistorted nuclear pulse signal transmission module of claim 5, wherein: the 8 th pin of the operational amplifier U2A is connected with the positive power supply pin (1), and the 4 th pin of the operational amplifier U2B is connected with the negative power supply pin (8).
7. The undistorted nuclear pulse signal transmission module of claim 1, wherein: the shell (9) is a metal shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021002819.9U CN212229184U (en) | 2020-06-04 | 2020-06-04 | Nuclear pulse signal distortion-free transmission module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021002819.9U CN212229184U (en) | 2020-06-04 | 2020-06-04 | Nuclear pulse signal distortion-free transmission module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212229184U true CN212229184U (en) | 2020-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021002819.9U Active CN212229184U (en) | 2020-06-04 | 2020-06-04 | Nuclear pulse signal distortion-free transmission module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212229184U (en) |
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2020
- 2020-06-04 CN CN202021002819.9U patent/CN212229184U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Yanta District in Shaanxi province Xi'an City Road 710061, No. 108 Patentee after: Xi'an Zhonghe Nuclear Instrument Co.,Ltd. Address before: Yanta District in Shaanxi province Xi'an City Road 710061, No. 108 Patentee before: XI'AN ZHONGHE NUCLEAR APPARATUS CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder |