CN210958336U - Anti-interference signal board card - Google Patents
Anti-interference signal board card Download PDFInfo
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- CN210958336U CN210958336U CN202020242586.3U CN202020242586U CN210958336U CN 210958336 U CN210958336 U CN 210958336U CN 202020242586 U CN202020242586 U CN 202020242586U CN 210958336 U CN210958336 U CN 210958336U
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Abstract
The utility model discloses an anti-interference signal board card, which comprises a board card body, wherein the board card body comprises a plurality of signal ports and a plurality of optical coupling isolation circuits; each signal port is connected with the corresponding optical coupling isolation circuit through an anti-interference circuit; the effect is as follows: the signal ports are connected with the corresponding optical coupling isolation circuits through the anti-interference circuits, and anti-interference processing is carried out on signals before optical coupling input on the basis of existing optical coupling isolation so as to overcome the defect that anti-interference means is single in the prior art.
Description
Technical Field
The utility model belongs to the technical field of the electronic hardware application and specifically relates to an anti-interference signal integrated circuit board.
Background
The signal board card is widely applied to various data acquisition systems due to the characteristics of miniaturization and integration, is easily interfered by external signals when applied, and has the defect of single anti-interference means because the anti-interference processing is not carried out on signals before the input of the optical coupler although the optical coupler is adopted for signal isolation in the prior art.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides an anti-interference signal integrated circuit board to overcome the single defect of anti-interference means in the prior art.
In order to achieve the above object, the utility model provides an anti-interference signal board card, which comprises a board card body, wherein the board card body comprises a plurality of signal ports and a plurality of optical coupling isolation circuits; and each signal port is connected with the corresponding optical coupling isolation circuit after passing through an anti-interference circuit.
Further, the anti-jamming circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2 and a first amplifier U1; one end of the first resistor R1 is connected to the signal port, the other end of the first resistor R1 is connected to one end of the first capacitor C1 and one end of the second resistor R2, the other end of the second resistor R2 is connected to one end of the second capacitor C2 and the positive input end of the first amplifier U1, the other end of the second capacitor C2 is grounded, the inverting input end of the first amplifier U1 is connected to the output end of the first amplifier U1, and the output end of the first amplifier U1 is connected to the other end of the first capacitor C1 and the input end of the optical coupling isolation circuit.
Further, the first capacitor C1 and the second capacitor C2 both adopt ceramic chip capacitors.
Further, the first amplifier U1 is an operational amplifier.
Further, the signal input to each of the signal ports is a voltage signal.
The utility model has the advantages that: the utility model discloses utilize all to be connected with the opto-coupler buffer circuit who corresponds behind each signal port through an anti-jamming circuit, on the basis that current opto-coupler was kept apart, carry out anti-interference processing to the signal before the opto-coupler input to there is the single defect of anti-interference means among the overcome prior art.
Drawings
Fig. 1 is a connection structure diagram of an anti-interference signal board card according to an embodiment of the present invention;
fig. 2 is a circuit diagram of an anti-jamming circuit according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1-2, an anti-interference signal board includes a board body, where the board body includes a plurality of signal ports and a plurality of optical coupling isolation circuits; and each signal port is connected with the corresponding optical coupling isolation circuit after passing through an anti-interference circuit.
In this embodiment, the board body includes a circuit board, an electronic component and a power supply, where the electronic component is some components such as a controller and a memory on an existing board, for example: the ZHHK-DOT series, optical coupling isolation circuit is a mature application in the prior art, and is clear to a person skilled in the art and is not described in detail herein; the board card body further comprises a plurality of signal ports and bus interfaces, and the number of the signal ports is 32 or 96; the user can select according to the actual situation, the type of the bus interface is CPCI or PCI, so that the bus interface is conveniently and directly inserted into a corresponding slot of the mainboard, and the connection of signals is more reliable and convenient compared with the traditional wire mode;
for the purpose of achieving interference resistance, referring to fig. 2, the interference-resistant circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2, and a first amplifier U1; one end of the first resistor R1 is connected to the signal port, the other end of the first resistor R1 is connected to one end of the first capacitor C1 and one end of the second resistor R2, the other end of the second resistor R2 is connected to one end of the second capacitor C2 and the positive input end of the first amplifier U1, the other end of the second capacitor C2 is grounded, the inverting input end of the first amplifier U1 is connected to the output end of the first amplifier U1, and the output end of the first amplifier U1 is connected to the other end of the first capacitor C1 and the input end of the optical coupling isolation circuit.
Specifically, the first capacitor C1 and the second capacitor C2 both adopt ceramic chip capacitors, the first amplifier U1 adopts an operational amplifier, and a signal input to each signal port is a voltage signal.
Furthermore, in order to improve the anti-interference effect of the signal board card, power supply wiring in the signal board card is arranged, wherein all positive wires of the power supply are connected together to form a loop, and all ground wires are connected together to form another loop.
Like this when actual application, on the basis of original integrated circuit board, will the utility model relates to a circuit is integrated, can realize corresponding promotion anti-interference function, has improved usability effectively, overcomes to have the defect that anti-interference means is single among the prior art.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (5)
1. An anti-interference signal board comprises a board body, wherein the board body comprises a plurality of signal ports and a plurality of optical coupling isolation circuits; the method is characterized in that: and each signal port is connected with the corresponding optical coupling isolation circuit after passing through an anti-interference circuit.
2. The tamper-resistant signal board of claim 1, wherein: the anti-jamming circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2 and a first amplifier U1; one end of the first resistor R1 is connected to the signal port, the other end of the first resistor R1 is connected to one end of the first capacitor C1 and one end of the second resistor R2, the other end of the second resistor R2 is connected to one end of the second capacitor C2 and the positive input end of the first amplifier U1, the other end of the second capacitor C2 is grounded, the inverting input end of the first amplifier U1 is connected to the output end of the first amplifier U1, and the output end of the first amplifier U1 is connected to the other end of the first capacitor C1 and the input end of the optical coupling isolation circuit.
3. The tamper-resistant signal board of claim 2, wherein: the first capacitor C1 and the second capacitor C2 both adopt ceramic chip capacitors.
4. The tamper-resistant signal board of claim 2, wherein: the first amplifier U1 is an operational amplifier.
5. The tamper-resistant signal board of claim 4, wherein: the signal input into each signal port is a voltage signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020242586.3U CN210958336U (en) | 2020-03-02 | 2020-03-02 | Anti-interference signal board card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020242586.3U CN210958336U (en) | 2020-03-02 | 2020-03-02 | Anti-interference signal board card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210958336U true CN210958336U (en) | 2020-07-07 |
Family
ID=71384042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020242586.3U Active CN210958336U (en) | 2020-03-02 | 2020-03-02 | Anti-interference signal board card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210958336U (en) |
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2020
- 2020-03-02 CN CN202020242586.3U patent/CN210958336U/en active Active
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