CN215680543U - Relay device - Google Patents
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- CN215680543U CN215680543U CN202122213509.2U CN202122213509U CN215680543U CN 215680543 U CN215680543 U CN 215680543U CN 202122213509 U CN202122213509 U CN 202122213509U CN 215680543 U CN215680543 U CN 215680543U
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Abstract
The utility model provides a relay device. The relay device includes a relay and a switch unit. The relay is provided with a first data terminal and a second data terminal. A first parasitic capacitor is formed between the first data terminal and the second data terminal when the relay is switched off. The switch unit is provided with a third data end and a fourth data end. A second parasitic capacitance is formed between the third data terminal and the fourth data terminal when the switch unit is turned off. The first parasitic capacitance and the second parasitic capacitance are coupled in series when formed. The capacitance value of the second parasitic capacitor is smaller than that of the first parasitic capacitor.
Description
Technical Field
The present invention relates to a relay device, and more particularly, to a relay device with low capacitance.
Background
The relays will have different switching operations. When turned on, the relay transmits signals through different terminals. At the time point of being turned off, parasitic capacitance may be formed between different data terminals, thereby causing undesirable effects such as an unexpected variation in signal bandwidth and an increase in signal transmission delay. In high power applications, the unexpected variation of the signal bandwidth and the increase of the transmission delay of the signal are more significant. Therefore, how to realize a relay device having a low capacitance characteristic is one of the subjects of the research and study by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a relay device with low capacitance characteristics, which can reduce unexpected variation of signal bandwidth and increase transmission delay of signals.
The relay device of the present invention includes a relay, a switch unit, and a controller. The relay is provided with a switching operation. The relay is provided with a first data terminal and a second data terminal. A first parasitic capacitor is formed between the first data terminal and the second data terminal when the relay is switched off. The switch unit is coupled to the relay. The switch unit is provided with a switching operation. The switch unit is provided with a third data end and a fourth data end. A second parasitic capacitance is formed between the third data terminal and the fourth data terminal when the switch unit is turned off. The controller is coupled to the relay and the switch unit. The controller controls the switch operation. The first parasitic capacitance and the second parasitic capacitance are coupled in series when formed. The capacitance value of the second parasitic capacitor is smaller than that of the first parasitic capacitor.
In one embodiment of the present invention, the first data terminal receives an input signal. The second data terminal is electrically connected to the third data terminal. The fourth data terminal outputs an output signal associated with the input signal.
In an embodiment of the utility model, in the switching operation, the relay has a first on-time point and a first off-time point. In the switching operation, the switching unit has a second on-time point and a second off-time point. The first conduction time point is later than the second conduction time point. The first disconnection time point is earlier than the second disconnection time point.
In an embodiment of the utility model, the relay is one of a high power mercury relay, at least one transistor type relay, and a mechanical relay. The relay is controlled by a first control signal provided by the controller.
In an embodiment of the utility model, the switch unit is one of a mercury relay, a transistor, a micro-electromechanical relay, a reed relay (REED RELAY), a mechanical relay, and a photoelectric coupling assembly having a second parasitic capacitance. The switch unit is controlled by a second control signal provided by the controller.
In an embodiment of the utility model, the relay comprises a transistor-type relay unit. The first end of the transistor-type relay unit is connected to the first data end, the second end of the transistor-type relay unit is connected to the second data end, and the transistor-type relay unit is controlled by a first control signal provided by the controller.
In an embodiment of the utility model, the relay comprises a plurality of transistor-type relay units coupled in parallel.
In an embodiment of the utility model, the relay comprises a plurality of transistor-type relay units coupled in series.
In an embodiment of the utility model, the relay comprises a plurality of transistor-type relay units. The plurality of transistor-type relay units are grouped into a plurality of series groups. The plurality of series groups are coupled in parallel with each other.
Based on the above, the relay forms the first parasitic capacitance when the relay device is turned off. The switching unit forms a second parasitic capacitance. The first parasitic capacitance and the second parasitic capacitance are coupled in series when formed. The capacitance value of the second parasitic capacitor is smaller than that of the first parasitic capacitor. Therefore, the parasitic capacitance formed when the relay device is turned off is reduced. In this way, the relay device can reduce unexpected variation of the signal bandwidth and reduce the bad conditions such as the transmission delay of the signal.
Drawings
Fig. 1 is a schematic diagram of a relay device according to a first embodiment of the utility model.
Fig. 2 is a schematic diagram of a switch unit according to an embodiment of the utility model.
Fig. 3A to fig. 3E are schematic diagrams of a relay according to an embodiment of the utility model.
Description of the reference numerals
100: relay device
110. 110a, 110b, 110c, 110d, 110 e: relay with a movable contact
111_1, 111_2, 111_3, 111_4, 111_ m, 111_ n: transistor type relay unit
120. 120 a: switch unit
130: controller
C1: first parasitic capacitance
C2: second parasitic capacitance
D: light emitting diode
M: transistor with a metal gate electrode
P1: first data terminal
P2: second data terminal
P3: third data terminal
P4: the fourth data terminal
P5, P6: control terminal of relay
SC1, SC1_1, SC1_ 2: a first control signal
SC2, SC2_1, SC2_ 2: the second control signal
S _ IN: input signal
S _ OUT: output signal
T1: first end
T2: second end
T3, T4: control terminal of transistor-type relay unit
T5: spare terminal
Detailed Description
Some embodiments of the utility model will now be described in detail with reference to the drawings, wherein like reference numerals are used to refer to like or similar elements throughout the several views. These embodiments are merely exemplary of the utility model and do not disclose all possible embodiments of the utility model. Rather, these embodiments are merely exemplary of the scope of the claims.
Referring to fig. 1, fig. 1 is a schematic diagram of a relay device according to a first embodiment of the utility model. In the present embodiment, the relay apparatus 100 includes a relay 110, a switching unit 120, and a controller 130. The relay 110 is provided with a switching operation of a general relay. The relay 110 has a first data terminal P1 and a second data terminal P2. When the relay 110 is turned on, the relay 110 may transmit a signal using the first data terminal P1 and the second data terminal P2. When the relay 110 is turned off, a first parasitic capacitance C1 may be formed between the first data terminal P1 and the second data terminal P2. In the present embodiment, the relay 110 is one of a high power mercury relay, at least one transistor type relay, and a mechanical relay. In the present embodiment, the relay 110 is turned on or off by the first control signal SC 1.
In the present embodiment, the switch unit 120 is coupled to the relay 110. The switching unit 120 is provided with a switching operation. The switch unit 120 has a third data terminal P3 and a fourth data terminal P4. When the switch unit 120 is turned on, the switch unit 120 may transmit a signal using the third data terminal P3 and the fourth data terminal P4. When the switching unit 120 is turned off, a second parasitic capacitance C2 is formed between the third data terminal P3 and the fourth data terminal P4. The switching unit 120 may be one of a mercury relay, a mechanical relay, a reed relay (REED RELAY), a micro-electromechanical relay, a transistor, and a photo-electric coupling assembly having a second parasitic capacitance C2. In the present embodiment, the switching unit 120 is turned on or off by the second control signal SC 2. In the present embodiment, the first parasitic capacitance C1 and the second parasitic capacitance C2 are coupled in series when formed. The capacitance value of the second parasitic capacitor C2 is smaller than that of the first parasitic capacitor C1.
It is worth mentioning here that the relay 110 forms a first parasitic capacitance C1 when the relay device 100 is turned off. The switching unit 120 forms a second parasitic capacitance C2. When formed, the first parasitic capacitance C1 is coupled in series with the second parasitic capacitance C2. The capacitance of the second parasitic capacitor C2 is significantly smaller than that of the first parasitic capacitor C1. Therefore, the parasitic capacitance formed when the relay device 100 is turned off has a very low equivalent capacitance value, which is significantly lower than that of the first parasitic capacitance C1. In this way, the relay device 100 can reduce unexpected variations in signal bandwidth and reduce problems such as signal transmission delay.
In the present embodiment, the relay 110 and the switching unit 120 are coupled in series. Therefore, when the relay apparatus 100 is turned off, the first parasitic capacitor C1 and the second parasitic capacitor C2 are coupled in series.
Further, the first data terminal P1 is used for receiving the input signal S _ IN. The second data terminal P2 is electrically connected to the third data terminal P3. The fourth data terminal P4 outputs an output signal S _ OUT associated with the input signal S _ IN. That is, the relay 110 may be an input stage component. The switching unit 120 may be an output stage component. IN the present embodiment, the output signal S _ OUT is substantially equal to the input signal S _ IN.
In the present embodiment, the controller 130 is coupled to the relay 110 and the switch unit 120. The controller 130 controls the above-described switching operation. That is, the controller 130 controls the relay 110 by using the first control signal SC1, and controls the switch unit 120 by using the second control signal SC 2. The controller 130 controls the relay 110 and the switching unit 120 to be turned on and off at different times.
In the present embodiment, in the switching operation, the relay 110 has a first on time point and a first off time point. The switching unit 120 has a second on time point and a second off time point. The first conduction time point is later than the second conduction time point. That is, the switch unit 120 is turned on first in response to the second control signal SC 2. Subsequently, the relay 110 is turned on in response to the first control signal SC 1. In addition, the first disconnection time point is earlier than the second disconnection time point. That is, the relay 110 is turned off in response to the first control signal SC 1. Subsequently, the switching unit 120 is turned off in response to the second control signal SC 2.
It should be noted that, in order to make the second parasitic capacitor C2 have a very low capacitance, the voltage tolerance between the third data terminal P3 and the fourth data terminal P4 of the switch unit 120 is low. Accordingly, the controller 130 controls the second turn-on time point of the switching unit 120 to be earlier than the first turn-on time point of the relay 110, and controls the second turn-off time point of the switching unit 120 to be later than the first turn-off time point of the relay 110. As a result, the controller 130 can prevent the switch unit 120 from being broken down due to the high voltage, thereby increasing the lifetime of the switch unit 120.
Referring to fig. 1 and fig. 2, fig. 2 is a schematic diagram of a switch unit according to an embodiment of the utility model. In the present embodiment, the switching unit 120a may be a mercury relay, a transistor, a micro-electromechanical relay, a reed relay, a mechanical relay, a photoelectric coupling assembly, a transistor-type relay, or any type of semiconductor switch. The switching unit 120a is implemented as a photo coupling assembly. The photoelectric coupling component comprises a light emitting diode D and a transistor M. The first terminal T1 of the transistor M is connected to the third data terminal P3. The second terminal T2 of the transistor M is connected to the fourth data terminal P4. The transistor M is turned on or off by an optical signal provided by the light emitting diode D. In the present embodiment, the light emitting diode D emits a light signal under the control of the high voltage difference or the high current provided by the second control signals SC2_1 and SC2_2, so as to turn on the transistor M. Accordingly, the switching unit 120a can transmit a signal. On the other hand, the light emitting diode D does not emit a light signal under the control of the low voltage difference or the low current provided by the second control signals SC2_1 and SC2_2, thereby turning off the transistor M. Accordingly, the switching unit 120a stops transmitting the signal.
In some embodiments, the relay 110 may be implemented by a single transistor-type relay unit similar to that of fig. 2. The first terminal of the transistor-type relay unit is connected to the first data terminal P1. The second terminal of the transistor-type relay unit is connected to the second data terminal P2.
Various embodiments of the relay are described below. Fig. 3A to fig. 3E are schematic diagrams of a relay according to an embodiment of the utility model. Referring first to fig. 3A, a relay 110a may be applied to the relay 110 of fig. 1. In the present embodiment, the relay 110a includes transistor-type relay units 111_1 to 111_ m. In the present embodiment, the transistor-type relay units 111_1 to 111_ m are coupled in series to form the relay 110 a.
Taking the present embodiment as an example, the first terminal T1 of the transistor-type relay unit 111_1 is connected to the first data terminal P1 of the relay 110 a. The second terminal T2 of the transistor-type relay unit 111_1 is coupled to the first terminal T1 of the transistor-type relay unit 111_ 2. The second terminal T2 of the transistor-type relay unit 111_2 is coupled to the first terminal T1 of the transistor-type relay unit 111_3, and so on. The second terminal T2 of the transistor-type relay unit 111_ m is connected to the second data terminal P2 of the relay 110 a. The control terminals T3 of the transistor-type relay units 111_ 1-111 _ m are commonly coupled to the control terminal P5 of the relay 110a for receiving the first control signal SC1_ 1. The control terminals T4 of the transistor-type relay units 111_ 1-111 _ m are commonly coupled to the control terminal P6 of the relay 110a for receiving the first control signal SC1_ 2. The transistor-type relay units 111_1 to 111_ m are similar to the optical coupling components (such as the optical coupling components shown in FIG. 2, but the utility model is not limited thereto). The light emitting diode D emits a light signal under the control of the high voltage difference or the high current provided by the first control signals SC1_1 and SC1_2, so as to turn on the transistor M. Thus, the relay 110a can transmit a signal. The transistor M is turned off by the low voltage difference or the low current provided by the first control signals SC1_1 and SC1_2 without emitting the light signal. Thus, the relay 110a stops transmitting the signal.
In some embodiments, at least one of the transistor-type relay units 111_1 to 111_ M includes a plurality of transistors M coupled in series between a first terminal T1 and a second terminal T2. As the number of transistors M in series increases, the corresponding transistor-type relay unit has higher voltage endurance.
In the present embodiment, the transistor-type relay units 111_1 to 111_ m are coupled in series through the first terminals T1 and the second terminals T2 of the transistor-type relay units 111_1 to 111_ m. In addition, based on the configuration of the present embodiment, the transistor-type relay units 111_1 to 111_ m are also controlled to perform the switching operation of synchronous on or synchronous off. Thus, the relay 110a may be suitable for high voltage (e.g., up to 20kV) applications.
The transistor relay units 111_1 to 111_ m each further include a standby terminal T5. For example, the standby terminal T5 of the transistor-type relay unit 111_1 can be connected to a reference potential (e.g., ground) to isolate the electrical interference between the second terminal T2 of the transistor-type relay unit 111_1 and the first terminal T1 of the transistor-type relay unit 111_ 2.
Referring to fig. 3B, a relay 110B may be applied to the relay 110 of fig. 1. In the present embodiment, the relay 110b includes transistor-type relay units 111_1 to 111_ n. In the present embodiment, the transistor-type relay units 111_1 to 111_ n are coupled in parallel to form the relay 110 b. Taking this embodiment as an example, the first terminals T1 of the transistor-type relay units 111_1 to 111_ n are commonly connected to the first data terminal P1 of the relay 110 b. A plurality of second terminals T2 of the transistor-type relay units 111_1 to 111_ n are commonly connected to a second data terminal P2 of the relay 110 b. The control terminals T3 of the transistor-type relay units 111_ 1-111 _ m are commonly coupled to the control terminal P5 of the relay 110b for receiving the first control signal SC1_ 1. The control terminals T4 of the transistor-type relay units 111_ 1-111 _ m are commonly coupled to the control terminal P6 of the relay 110b for receiving the first control signal SC1_ 2.
In the present embodiment, the transistor-type relay units 111_1 to 111_ n are coupled in parallel. In addition, based on the configuration of the present embodiment, the transistor-type relay units 111_1 to 111_ n are also controlled to perform the switching operation of synchronous on or synchronous off. Therefore, the relay 110b can be suitably used for high-current operation.
Referring to fig. 3C, compared to the relay 110a of fig. 3A, the transistor-type relay units 111_1 to 111_ m of the relay 110C have a plurality of control terminals T3 and T4 respectively coupled in series between the control terminals P5 and P6 of the relay 110C. Specifically, the control terminal T3 of the transistor-type relay unit 111_1 is connected to the control terminal P5 of the relay 110 c. The control terminal T4 of the transistor-type relay unit 111_1 is connected to the control terminal T3 of the transistor-type relay unit 111_ 2. The control terminal T4 of the transistor-type relay unit 111_2 is connected to the control terminal T3 of the transistor-type relay unit 111_3, and so on. The control terminal T4 of the transistor-type relay unit 111_ m is connected to the control terminal P6 of the relay 110 c.
Referring to fig. 3D, compared to the relay 110B of fig. 3B, the transistor-type relay units 111_1 to 111_ n of the relay 110D have a plurality of control terminals T3 and T4 respectively coupled in series between the control terminals P5 and P6 of the relay 110D. Specifically, the control terminal T3 of the transistor-type relay unit 111_1 is connected to the control terminal P5 of the relay 110 d. The control terminal T4 of the transistor-type relay unit 111_1 is connected to the control terminal T3 of the transistor-type relay unit 111_ 2. The control terminal T4 of the transistor-type relay unit 111_2 is connected to the control terminal T3 of the transistor-type relay unit 111_3, and so on. The control terminal T4 of the transistor-type relay unit 111_ n is connected to the control terminal P6 of the relay 110 d.
Referring to FIG. 3E, the relay 110E includes transistor-type relay units 111_1 to 111_ 4. The transistor-type relay units 111_1, 111_2 are grouped into a first series group. The transistor-type relay units 111_3, 111_4 are grouped into a second series group. In addition, the first and second series groups are coupled in parallel with each other. Therefore, the present embodiment is suitable for high voltage operation and high current operation.
For example, the first terminal T1 of the transistor-type relay unit 111_1 is coupled to the first data terminal P1 of the relay 110 e. The second terminal T2 of the transistor-type relay unit 111_1 is coupled to the first terminal T1 of the transistor-type relay unit 111_ 2. The second terminal T2 of the transistor-type relay unit 111_2 is coupled to the second data terminal P2 of the relay 110 e. The control terminal T3 of the transistor-type relay unit 111_1 is coupled to the control terminal P5 of the relay 110 e. The control terminal T4 of the transistor-type relay unit 111_1 is coupled to the control terminal T3 of the transistor-type relay unit 111_ 2. The control terminal T4 of the transistor-type relay unit 111_2 is coupled to the control terminal P6 of the relay 110 e. Accordingly, the transistor-type relay units 111_1, 111_2 are coupled in series to form a first series group. The first terminal T1 of the transistor-type relay unit 111_3 is coupled to the first data terminal P1 of the relay 110 e. The second terminal T2 of the transistor-type relay unit 111_3 is coupled to the first terminal T1 of the transistor-type relay unit 111_ 4. The second terminal T2 of the transistor-type relay unit 111_4 is coupled to the second data terminal P2 of the relay 110 e. The control terminal T3 of the transistor-type relay unit 111_3 is coupled to the control terminal P5 of the relay 110 e. The control terminal T4 of the transistor-type relay unit 111_3 is coupled to the control terminal T3 of the transistor-type relay unit 111_ 4. The control terminal T4 of the transistor-type relay unit 111_4 is coupled to the control terminal P6 of the relay 110 e. Accordingly, the transistor-type relay units 111_3, 111_4 are coupled in series to form a second series group, and are coupled in parallel with the first series group. The number of the serial groups of the present invention may be plural, and is not limited to this embodiment. In the present embodiment, the relay 110e includes a single parallel group formed by a plurality of series groups. In some embodiments, the relay 110e may include a plurality of the parallel sets described above. In some embodiments, the relay 110e may include multiple parallel groups connected in series with each other.
In some embodiments, the control terminals T3, T4 of the transistor-type relay units 111_ 1-111 _4 can also be coupled in parallel, such as the coupling manner of the control terminals T3, T4 shown in FIGS. 3A, 3B. In some embodiments, the control terminals T3, T4 of the transistor-type relay units 111_ 1-111 _4 can be coupled in series, such as the coupling of the control terminals T3, T4 shown in FIGS. 3C, 3D. In some embodiments, the control terminals T3, T4 of a portion of the transistor-type relay units 111_1 to 111_4 may be coupled in series. The control terminals T3, T4 of another part of the transistor-type relay units 111_1 to 111_4 may be coupled in parallel. For example, the control terminals T3, T4 of the transistor-type relay units 111_1, 111_2 are coupled in series. The control terminals T3, T4 of the transistor-type relay units 111_3, 111_4 are coupled in parallel.
Based on the above embodiments, the present invention can make the relay device 100 meet the requirement of high voltage operation or high current operation through different configurations of the plurality of transistor-type relay units.
In summary, when the relay device of the present invention is turned off, the relay forms a first parasitic capacitor. The switching unit forms a second parasitic capacitance. The first parasitic capacitance and the second parasitic capacitance are coupled in series when formed. The capacitance value of the second parasitic capacitor is smaller than that of the first parasitic capacitor. Therefore, the parasitic capacitance formed when the relay device is turned off is reduced. Therefore, the relay device can reduce the unexpected variation of the signal bandwidth and effectively reduce the signal transmission delay. In addition to this, the controller controls the second turn-on time point of the switching unit to be earlier than the first turn-on time point of the relay, and controls the second turn-off time point of the switching unit to be later than the first turn-off time point of the relay. Therefore, the controller can prevent the switch unit from being broken down due to high voltage, thereby prolonging the service life of the switch unit.
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; while the utility model has been described in detail and with reference to the foregoing embodiments, it will 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; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A relay device, characterized in that the relay device comprises:
a relay having a switching operation, having a first data terminal and a second data terminal, wherein a first parasitic capacitance is formed between the first data terminal and the second data terminal when the relay is turned off;
a switch unit coupled to the relay, having the switching operation, and having a third data terminal and a fourth data terminal, wherein a second parasitic capacitance is formed between the third data terminal and the fourth data terminal when the switch unit is turned off; and
a controller coupled to the relay and the switching unit for controlling the switching operation,
wherein the first parasitic capacitance and the second parasitic capacitance are coupled in series when formed, and a capacitance value of the second parasitic capacitance is less than a capacitance value of the first parasitic capacitance.
2. The relay device according to claim 1, wherein:
the first data terminal receives an input signal,
the second data terminal is electrically connected to the third data terminal, and
the fourth data terminal outputs an output signal associated with the input signal.
3. The relay device according to claim 1, wherein:
in the switching operation, the relay has a first on-time point and a first off-time point,
in the switching operation, the switching unit has a second on-time point and a second off-time point,
the first conduction time point is later than the second conduction time point, and
the first disconnection time point is earlier than the second disconnection time point.
4. The relay device according to claim 1, wherein:
the relay is one of a high power mercury relay, at least one transistor type relay and a mechanical relay, and
the relay is controlled by a first control signal provided by the controller.
5. The relay device according to claim 1, wherein:
the switching unit is one of a mercury relay, a transistor, a micro-electromechanical relay, a reed relay, a mechanical relay, and a photoelectric coupling assembly having the second parasitic capacitance, and
the switch unit is controlled by a second control signal provided by the controller.
6. The relay device according to claim 1, wherein:
the relay includes a transistor-type relay unit, and
the first end of the transistor-type relay unit is connected to the first data end, the second end of the transistor-type relay unit is connected to the second data end, and the transistor-type relay unit is controlled by a first control signal provided by the controller.
7. The relay arrangement, as recited in claim 1, wherein the relay comprises a plurality of transistor-type relay units coupled in parallel.
8. The relay device according to claim 1, wherein the relay comprises a plurality of transistor-type relay units coupled in series.
9. The relay device according to claim 1, wherein:
the relay includes a plurality of transistor-type relay units,
the plurality of transistor-type relay units are grouped into a plurality of series groups, and
the plurality of series groups are coupled in parallel with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122213509.2U CN215680543U (en) | 2021-09-13 | 2021-09-13 | Relay device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122213509.2U CN215680543U (en) | 2021-09-13 | 2021-09-13 | Relay device |
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| Publication Number | Publication Date |
|---|---|
| CN215680543U true CN215680543U (en) | 2022-01-28 |
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| CN202122213509.2U Active CN215680543U (en) | 2021-09-13 | 2021-09-13 | Relay device |
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| CN (1) | CN215680543U (en) |
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2021
- 2021-09-13 CN CN202122213509.2U patent/CN215680543U/en active Active
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