TWM531099U - Electrical noise elimination structure - Google Patents

Description

Electrical noise cancellation structure

This creation belongs to an electrical noise cancellation structure. Its function is to reduce the signal transmission distortion caused by the zero potential error between system devices, and to simplify the operation by automatic control, and to expand the grounding concept between the device and the device to the complex end point. The connected architecture connects the ground wire of each device in the system to the original through a low-impedance wire. The equi-potential is provided in the creation structure and the noise is filtered out, and a set of external cathartic channels are created to allow centralized The residual noise is eliminated again, and it has the effect of eliminating electrical noise.

In general, the signal transmission can be close to 100% transmission when the transmitter and the receiver have good impedance matching, but if the two zero potentials drift with each other, especially in the case of long distance transmission or high input impedance, even the impedance If the matching is good, the error of the received signal will be generated due to the instability of the zero point. The reaction to the digital signal will cause the time base error (Jitter), and even the bit will be lost. The analog signal will produce different degrees of distortion, affecting the signal. Authenticity. Conventionally, in the device, the grounding conductor is usually used to reduce the impedance between each other, or the star ground is used to make the equal zero potential, but if it is between different devices of a system, it can usually only rely on the signal wire. Connections, architectural concepts with limited conductors and difficulty in achieving complex endpoint connections.

In view of this, the author is well aware of the lack of use, and is thinking about how to connect the ground wire of each device in the system to a structure through a low-impedance wire with a structure of multiple endpoint connections, and provide the structure with After filtering the equipotential and filtering the noise, and creating a set of external catharsis channels, the concentrated residual noise is eliminated again. With many years of professional experience, and many experiments, the experiment finally succeeded in the creation. An electrical noise cancellation structure is provided to have an excellent effect of eliminating electrical noise.

Therefore, the main purpose of this creation is to provide an electrical noise cancellation structure that has excellent efficacy in eliminating electrical noise.

Based on this, the author mainly uses the following technical means to achieve the above-mentioned purpose and its effects. The structure includes: a casing with multiple endpoints, a complex filter module, a centralized switching control unit, AC- DC power processing circuit, microprocessor, ADC sampling circuit and environment potential generating circuit, the complex end point connects the complex filter to the centralized switching control unit, and the centralized switching control unit is connected to the AC-DC power processor, the AC-DC power processor The microprocessor is connected to the switching control unit, and the ambient potential generating circuit is connected to the ADC sampling circuit to the microprocessor.

Therefore, the end point of the creation can provide the ground connection of each device in the system; the complex filter module can provide primary noise filtering for each end point, and the filter module can add a parallel filter module according to product positioning and performance requirements to strengthen Filter out the bad high-frequency noise in the AC power supply and improve the purity of the same-loop AC power supply; the centralized switching control unit can centralize the filtered contacts of each endpoint and perform switching control; the microprocessor can coordinately control the operation of the device; The ambient potential generating circuit can generate a set of relative potentials between the mains and the mains; the ADC sampling circuit can convert the environmental potential into digital data; the AC-DC power processing circuit can convert the AC mains to provide DC equipment for operation, and provide concentration Switch the control unit signal path.

The feature of the creation is that the end points of the plurality of connecting devices can be provided, and each end point is provided with an independent noise filtering module, and the partial noises of the respective devices can be converted into the hot type separation first. The filter module can be composed of a capacitor, a resistor, an inductor or other eddy current generating component, and then the filtered device ground is introduced into the centralized switching control unit, thereby avoiding cross-infection of noise between devices, and allowing each device to be There is a consistent zero ground potential between them. The environmental potential generating circuit can generate a resistance potential difference according to the environment where the device is located and the utility water hot line, and the analog digital sampling ADC sampling circuit converts the set of potential differences into digital information and then performs the arithmetic processing on the microprocessor. After the judgment, the microprocessor indicates the phase of the water and fire line in the mains, and then the centralized switching control unit performs the correct switching, so that the zero point of the centralized device is connected to the ground potential in the listed power again, and the absolute reference zero point is given. This constitutes a zero-point ground potential of a system-wide stable and low noise, which effectively avoids signal interference and distortion caused by grounding errors.

In order to enable the review board to further understand the detailed structure, features and other purposes of the present work, the following is a preferred embodiment of the present invention, and the detailed description of the present invention is as follows, and the person familiar with the technical field can be implemented. .

This creation is an electrical noise cancellation structure, with reference to the specific embodiment of the creation and its components, as illustrated in the accompanying drawings, all references to front and rear, left and right, top and bottom, upper and lower, and horizontal and vertical. , for convenience of description only, does not limit the creation, nor restricts its components to any position or space. The drawings and the dimensions specified in the specification may be varied according to the design and needs of the specific embodiments of the present invention, without departing from the scope of the invention.

Please refer to FIG. 1 to FIG. 3 , which is a novel design of the electrical noise cancellation structure, and the structure thereof comprises: a casing body 10 is provided with a plurality of end points 20 , a complex filter module 30 , and a centralized switching control The unit 40, the AC-DC power processing circuit 50, the microprocessor 60, the ADC sampling circuit 70 and the ambient potential generating circuit 80, the complex terminal 20 connects the complex filter 30 to the switching control unit 40, and the centralized switching control unit 40 connects to the AC. - DC power processor 50, AC-DC power processor 50 is connected to the microprocessor 60 centralized switching control unit 40, the ambient potential generating circuit 80 is connected to the ADC sampling circuit 70 to the microprocessor 60, and the AC-DC power processing circuit 50 is connected. Mains 90.

Therefore, the endpoint 20 can provide ground connection of each device in the system; the complex filter module 30 can provide primary noise filtering for each endpoint, and the filter module 30 can add a parallel filter module according to product positioning and performance requirements. 31, to enhance the filtering of bad high frequency noise in the AC power source, and improve the purity of the same circuit AC power; the centralized switching control unit 40 can centralize the filtering points of each end point 20 and perform switching control; the microprocessor 60 The operation of the device can be coordinated and controlled; the ambient potential generating circuit 80 can generate a set of relative potentials between the utility and the utility power 90, and the connection device is used as a reference point, and a potential difference is generated between the water and the live line of the commercial power to determine the phase of the commercial water and fire line. The ADC sampling circuit 70 converts the ambient potential into digital data; the AC-DC power processing circuit 50 converts the AC mains 90 to provide DC equipment for operation, and provides a centralized switching control unit 40 signal path, the function of which is to reduce each The signal transmission distortion caused by the zero potential error between the devices is simplified, and the operation is simplified by the automatic control method, and the concept of grounding between the device and the device is expanded to The architecture of the number of endpoints connects the ground of each device to the authoring endpoint 20 through a low-impedance wire. The equi-potential is provided in the creation structure and the noise is filtered out, and a set of external venting channels are created. Let the concentrated residual noise be eliminated again, which has the effect of eliminating electrical noise.

The feature of the present invention is that an end point 20 of a plurality of connecting devices can be provided, and each end point 20 is provided with an independent noise filtering module 30, which can first convert some of the noises of each device into a hot type separation. The noise filter module 30 has a filter network composed of a resistor, a capacitor and an inductor, and a wound antenna forms an eddy current for the noise, converts the electromagnetic wave noise contained in the line into heat energy, and then filters the filtered The device ground is introduced into the centralized switching control unit 40, which avoids cross-infection of noise between the devices, and has a uniform zero-ground potential between the devices. The ambient potential generating circuit 80 can generate a resistance potential difference between the environment in which the device is located and the mains 90 water line. The analog digital sampling ADC sampling circuit 70 converts the set of potential differences into digital information and then performs the arithmetic processing by the microprocessor 60. After the judgment, the microprocessor 60 indicates the phase of the water line in the commercial power 90, and then the correct switching is performed by the centralized switching control unit 40, so that the zero point of the centralized device is again connected to the ground potential of the listed power 90, and an absolute reference zero is given. . This constitutes a zero-point ground potential of a system-wide stable and low noise, which effectively avoids signal interference and distortion caused by grounding errors.

The environmental potential generating circuit uses the connecting device as a reference point and generates a potential difference with the water-fired line in the commercial power to determine the phase of the commercial water-fire line.

10‧‧‧Chassis body
20‧‧‧Endpoint
30‧‧‧Filter module
31‧‧‧Parallel filter module
40‧‧‧Central switching control unit
40‧‧‧Central switching control unit
50‧‧‧AC-DC power processing circuit
60‧‧‧Microprocessor
70‧‧‧ADC sampling circuit
80‧‧‧Environmental potential generation circuit
90‧‧‧Power

Figure 1 is a simplified schematic diagram of a preferred embodiment of the present invention. Figure 2 is a plan view showing the structure of the preferred embodiment of the present invention. Fig. 3 is a schematic view showing the connecting device and the venting passage of the preferred embodiment of the present invention.

10‧‧‧Chassis body

20‧‧‧Endpoint

30‧‧‧Filter module

31‧‧‧Parallel filter module

40‧‧‧Central switching control unit

40‧‧‧Central switching control unit

50‧‧‧AC-DC power processing circuit

60‧‧‧Microprocessor

70‧‧‧ADC sampling circuit

80‧‧‧Environmental potential generation circuit

90‧‧‧Power

Claims (10)

An electrical noise canceling structure comprises: a casing body having a plurality of end points, a complex filter module, a centralized switching control unit, an AC-DC power processing circuit, a microprocessor, an ADC sampling circuit and an environment a potential generating circuit, the complex end point connecting the complex filter to the centralized switching control unit, the centralized switching control unit is connected to the AC-DC power supply processor, the AC-DC power supply processor is connected to the switching control unit, and the environmental potential generating circuit is connected The ADC sampling circuit is connected to the microprocessor, and the end point can provide ground connection of each device in the system; the complex filtering module can provide primary noise filtering for each end point; the centralized switching control unit can focus the filtered contacts of each end point and Performing switching control; the microprocessor can coordinately control the operation of the device; the environmental potential generating circuit can generate a set of relative potentials with the commercial power; the ADC sampling circuit can convert the environmental potential into digital data; the AC-DC power processing circuit The convertible AC mains supply is required for DC operation of the equipment and provides a centralized switching control unit signal path. The electrical noise cancellation structure according to claim 1, wherein the complex endpoint, the complex filter module, the centralized switching control unit, the AC-DC power processing circuit, the microprocessor, the ADC sampling circuit, and the ambient potential generation When the circuit is connected, the signal transmission distortion caused by the zero potential error between the system devices can be reduced, and the operation can be simplified by the automatic control method. The electrical noise cancellation structure according to claim 1, wherein the complex filter module has a filter network composed of a resistor, a capacitor, and an inductor, and the wound antenna forms an eddy current to the noise, and the line is carried in the line. Some electromagnetic wave noise is converted into heat. The electrical noise canceling structure according to claim 1, wherein the centralized switching control unit performs channel switching by a mechanical or solid state relay, and is concentrated to the downstream bleed passage. For example, in the electrical noise canceling structure described in claim 1, wherein the environmental potential generating circuit uses the connecting device as a reference point and generates a potential difference with the water-fired hotline in the commercial power to determine the phase of the commercial water-fire line. The electrical noise cancellation structure according to claim 1, wherein the AC-DC power processing circuit is a transformerless circuit with low noise, and provides a mains ground connection for centralized switching control unit connection. For example, the electrical noise cancellation structure described in claim 1 is characterized in that the AC-DC power processing circuit can be a transformer circuit with high reliability and provides a mains ground connection for centralized switching control unit connection. The electrical noise canceling structure according to claim 4, wherein the downstream venting channel is a utility water line. The electrical noise cancellation structure according to claim 4, wherein the downstream bleed passage is a commercial power ground. For example, the electrical noise cancellation structure described in claim 4, wherein the filter module can add a parallel filter module according to product positioning and performance requirements to enhance filtering of bad high frequency noise in the AC power source, and enhance the same Loop AC power purity.