CN213461768U - Anti-interference system between equipment - Google Patents
Anti-interference system between equipment Download PDFInfo
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- CN213461768U CN213461768U CN202022363154.0U CN202022363154U CN213461768U CN 213461768 U CN213461768 U CN 213461768U CN 202022363154 U CN202022363154 U CN 202022363154U CN 213461768 U CN213461768 U CN 213461768U
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Abstract
The utility model discloses an interference-proof system between equipment, include: the device comprises a first device, a second device, a signal transmission line and a signal transfer device; the first device and the second device are connected through a signal transmission line, and the signal transmission line is used for transmitting signals between the first device and the second device; the signal transfer device is arranged on the signal transmission line and used for transferring signals on the signal transmission line, and the driving voltage of the signal transfer device is larger than the preset voltage. The embodiment of the utility model discloses interference-proof system between equipment can avoid the signal of equipment transmission to receive interfering signal's influence.
Description
Technical Field
The embodiment of the utility model provides a circuit technology especially relates to an interference-proof system between equipment.
Background
With the development of science and technology, various fields have been developed into devices capable of independently implementing various functions. However, due to the factors of cost, volume, weight and the like, a single device can only independently perform one or a limited number of functions. In order to realize more complex functions, a plurality of single devices are required to be combined together to form a system, and data interaction between the devices in the system is required to be carried out through communication connection.
The connection mode between the devices in the system comprises wired connection and wireless connection, wherein the wireless connection is convenient and fast, but is easy to be interfered by the outside world, and the reliability is inferior to that of the wired connection. The wired connection has strong anti-interference capability and high reliability, and the data transmission rate is also superior to that of the wireless connection. Therefore, in a system capable of using wired connection, devices are generally connected by wired connection.
However, even if the devices are connected by wire, the transmission line connected between the devices may still be interfered by the outside, and especially when the transmission line is long, the interference is received more seriously, so that the signal receiving device on the transmission line may not receive the signal correctly.
SUMMERY OF THE UTILITY MODEL
The utility model provides an interference-proof system between equipment can avoid the signal of equipment transmission to receive interfering signal's influence.
In a first aspect, an embodiment of the present invention provides an inter-device interference prevention system, including: the device comprises a first device, a second device, a signal transmission line and a signal transfer device;
the first device and the second device are connected through a signal transmission line, and the signal transmission line is used for transmitting signals between the first device and the second device;
the signal transfer device is arranged on the signal transmission line and used for transferring signals on the signal transmission line, and the driving voltage of the signal transfer device is larger than the preset voltage.
In a possible implementation form of the first aspect, the signal transmission line is connected between the control device of the first device and the control device of the second device.
In a possible implementation manner of the first aspect, the control device of the first device and the control device of the second device are PLCs.
In a possible implementation form of the first aspect, the signal transmission line is connected between an input point of the PLC of the first device and an input point of the PLC of the second device.
In a possible implementation manner of the first aspect, a driving voltage of the signal relaying device is less than or equal to a signal voltage transmitted between the first device and the second device.
In a possible implementation manner of the first aspect, the preset voltage is greater than a voltage of an interference signal received on the signal transmission line.
In a possible implementation manner of the first aspect, the signal relay device is a relay.
In a possible implementation manner of the first aspect, the preset voltage is in a range of 14.8V-30V.
In a possible implementation manner of the first aspect, the length of the signal transmission line is greater than a preset length.
In a possible implementation manner of the first aspect, two signal transfer devices are provided, and are respectively disposed on the signal transmission line within a preset distance from the first device and the second device.
The embodiment of the utility model provides an anti-interference system between equipment, including first equipment, second equipment, signal transmission line and signal transfer device, first equipment and second equipment pass through signal transmission line and connect and transmit signal, signal transfer device sets up on signal transmission line and carries out the signal transfer on signal transmission line, the driving voltage of signal transfer device is greater than predetermineeing voltage, owing to set up the signal transfer device that driving voltage is greater than predetermineeing voltage on the signal transmission line of connecting first equipment and second equipment, and the unable driving signal transfer device of the voltage of the interference signal who receives on the signal transmission line, consequently, interference signal can't transmit on signal transmission line, thereby the data signal of the interference signal that receives on avoiding signal transmission line to transmit on signal transmission line disturbs the interference
Drawings
Fig. 1 is a schematic structural diagram of an inter-device interference prevention system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of an inter-device interference prevention system provided by the embodiment of the present invention, as shown in fig. 1, the inter-device interference prevention system provided by this embodiment includes:
a first device 11, a second device 12, a signal transmission line 13 and a signal relay device 14. The first device 11 and the second device 12 may be any devices for performing one or more functions, and the first device 11 and the second device 12 may be combined to cooperate with each other to perform more complex functions. The first device 11 and the second device 12 have a signal transceiving function, wherein at least one of the first device 11 and the second device 12 has a signal transmitting function and the other device has a signal receiving function, or both devices have a signal transceiving function. The first device 11 and the second device 12 realize the mutual cooperation of functions through the interaction of signals.
For reliable signal transmission between the first device 11 and the second device 12, the first device 11 and the second device 12 are connected by a signal transmission line 13, and the signal transmission line 13 is a physical line connected between the first device 11 and the second device 12. Good transmission of signals can be ensured by signal transmission between the first device 11 and the second device 12 via the physical signal transmission line 13. However, even if the physical signal transmission line 13 is used to transmit signals between the first device 11 and the second device 12, the signals transmitted on the signal transmission line 13 may still be interfered, resulting in errors in the transmitted signals.
Therefore, in the present embodiment, the signal relay device 14 is disposed on the signal transmission line 13, the signal relay device 14 is used for performing signal relay on the signal transmission line 13, and the driving voltage of the signal relay device 14 is greater than the preset voltage. All signals transmitted on the signal transmission line 13 need to be relayed by the signal relay device 14, for example, a signal transmitted by the first device 11 to the second device 12 through the signal transmission line 13 first reaches the signal relay device 14, and then is relayed by the signal relay device 14 and then is continuously transmitted to the second device 12 through the signal transmission line 13. The signals transmitted between the first device 11 and the second device 12 cannot be directly transmitted through the signal transmission line 13.
The interference on the signal transmission line 13 is mainly classified into two types, one is interference generated by electromagnetic waves from the outside, and the other is interference generated by power signals or other signals on the first device 11 and the second device 12 connected with the signal transmission line 13. However, the signal level of the interference signal generated by each interference signal source on the signal transmission line 13 is not too large and is much smaller than the signal level of the signal transmitted on the signal transmission line 13. Therefore, a driving voltage can be set for the signal relay 14 disposed on the signal transmission line 13, so that the driving voltage is greater than a predetermined voltage. The preset voltage may be any preset voltage, but the preset voltage may be set to be smaller, and since the voltage of the interference signal received on the signal transmission line 13 is generally small, the set smaller preset voltage also enables the interference signal received on the signal transmission line 13 to fail to pass through the signal relay device 14. Preferably, the preset voltage is greater than a voltage value of an interference signal possibly received on the signal transmission line 13. Further, of course, the preset voltage is also less than or equal to the voltage value of the signal transmitted on the signal transmission line 13. When the signal transmission line 13 is interfered by the interference signal, the interference signal does not drive the signal relay device 14 because the voltage of the interference signal is less than the driving voltage of the signal relay device 14, and the interference signal cannot be transmitted to the signal receiving end through the signal transmission line 13. Since the voltage of the normal signal transmitted on the signal transmission line 13 is greater than or equal to the driving voltage of the signal relay device 14, the signal relay device 14 can be driven, so that the normal signal can be transmitted to the signal receiving end through the signal transmission line 13. The preset voltage of the signal relay device 14 may be, for example, 14.8V to 30V, or 24V.
The signal relay device 14 may be any device or device that has signal relay capability and can set a certain driving voltage, for example, the signal relay device 14 is a relay.
In addition, the length of the signal transmission line 13 may be greater than a preset length. When the length of the signal transmission line 13 is short, the probability of interference is also small, and therefore, when the length of the signal transmission line 13 is greater than the preset length, the signal relay device 14 needs to be arranged on the signal transmission line 13. Wherein the preset length is 1 meter, for example, or 5 meters.
Further, two signal relay devices 14 may be disposed on the signal transmission line 13 within a predetermined distance from the first device 11 and the second device 12, respectively. That is, the signal relay device 14 is disposed on the signal transmission line 13 at a position close to the first device 11 and the second device 12, so that the interference signal on the signal transmission line 13 can be prevented from reaching the first device 11 or the second device 12 to the greatest extent.
The inter-device interference prevention system provided by this embodiment, including the first device, the second device, signal transmission line and signal transfer device, the first device and the second device are connected through signal transmission line and transmit signals, the signal transfer device sets up on signal transmission line and carries out signal transfer on signal transmission line, the driving voltage of signal transfer device is greater than predetermined voltage, because set up the signal transfer device that driving voltage is greater than predetermined voltage on connecting the signal transmission line of first device and second device, and the unable driving signal transfer device of voltage of the interference signal who receives on the signal transmission line, consequently, the interference signal can't be transmitted on signal transmission line, thereby avoid the interference signal that receives on the signal transmission line to disturb the data signal that transmits on the signal transmission line.
Further, no matter what kind of functions the first device 11 and the second device 12 are, in order to implement unified data processing, a device for performing unified data processing, generally a control device, may be provided on both the first device 11 and the second device 12. The control devices on the first device 11 and the second device 12 are used for transmitting, receiving and processing data, and controlling other devices or components on the first device 11 and the second device 12. The signal transmission line 13 is connected between the control means of the first device 11 and the control means of the second device 12, the signal transmission line 13 being used for signal transmission between the control means of the first device 11 and the control means of the second device 12.
The control device of the first device 11 and the control device of the second device 12 may be any device having signal transmission/reception capability and data processing capability, and may be, for example, a Programmable Logic Controller (PLC). When the control device of the first device 11 and the control device of the second device 12 are PLCs, the signal transmission line 13 is connected between an input point of the PLC of the first device 11 and an input point of the PLC of the second device 12.
Additionally, the embodiment of the utility model provides an in interference prevention system between equipment can be applied to any kind of multi-device combined work's system, wherein, can include big power equipment among the multi-device system, because big power equipment can produce electromagnetic interference to signal interaction, consequently, uses in multi-device system including big power equipment the utility model provides an interference prevention system between equipment can embody better anti-interference effect.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious modifications, rearrangements and substitutions without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. An inter-device tamper-proof system, comprising: the device comprises a first device, a second device, a signal transmission line and a signal transfer device;
the first device and the second device are connected through the signal transmission line, and the signal transmission line is used for transmitting signals between the first device and the second device;
the signal transfer device is arranged on the signal transmission line and used for transferring signals on the signal transmission line, and the driving voltage of the signal transfer device is larger than the preset voltage.
2. The system of claim 1, wherein the signal transmission line is connected between the control device of the first device and the control device of the second device.
3. The system of claim 2, wherein the control means of the first device and the control means of the second device are programmable logic devices (PLCs).
4. The system of claim 3, wherein the signal transmission line is connected between an input point of the PLC of the first device and an input point of the PLC of the second device.
5. The system according to any one of claims 1 to 4, wherein the driving voltage of the signal transfer device is less than or equal to the signal voltage transmitted between the first device and the second device.
6. The system according to any one of claims 1 to 4, wherein the predetermined voltage is greater than a voltage of an interference signal received on the signal transmission line.
7. The system according to any one of claims 1 to 4, wherein the signal relay device is a relay.
8. The system of claim 6, wherein the preset voltage is in a range of 14.8V-30V.
9. The system of any one of claims 1 to 4, wherein the signal transmission line has a length greater than a predetermined length.
10. The system according to any one of claims 1 to 4, wherein there are two signal relaying devices, which are respectively disposed on the signal transmission line within a predetermined distance from the first device and the second device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022363154.0U CN213461768U (en) | 2020-10-21 | 2020-10-21 | Anti-interference system between equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022363154.0U CN213461768U (en) | 2020-10-21 | 2020-10-21 | Anti-interference system between equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213461768U true CN213461768U (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022363154.0U Active CN213461768U (en) | 2020-10-21 | 2020-10-21 | Anti-interference system between equipment |
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|---|---|
| CN (1) | CN213461768U (en) |
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- 2020-10-21 CN CN202022363154.0U patent/CN213461768U/en active Active
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