CN113485955B - Equipment transmission circuit, device and system - Google Patents
Equipment transmission circuit, device and system Download PDFInfo
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- CN113485955B CN113485955B CN202110770943.2A CN202110770943A CN113485955B CN 113485955 B CN113485955 B CN 113485955B CN 202110770943 A CN202110770943 A CN 202110770943A CN 113485955 B CN113485955 B CN 113485955B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 351
- 238000001514 detection method Methods 0.000 claims description 149
- 239000003990 capacitor Substances 0.000 claims description 65
- 230000008054 signal transmission Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 description 23
- 230000011664 signaling Effects 0.000 description 8
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- 230000003287 optical effect Effects 0.000 description 3
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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- 238000003032 molecular docking Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4081—Live connection to bus, e.g. hot-plugging
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Abstract
The invention discloses a device transmission circuit, which comprises a first differential transmission device, a hot plug identification device 30, a first differential mode inductor and a second differential mode inductor. The invention also discloses a device transmission device and a device transmission system. According to the invention, the hot plug identification based on the differential transmission line can be realized without adding a physical wire for the hot plug identification circuit.
Description
Technical Field
The present invention relates to the field of instruments and devices, and in particular, to a device transmission circuit, apparatus, and system.
Background
In some instrument and equipment systems, due to the requirements and limitations of the working environment, the whole system is designed into a discrete mode, and comprises acquisition equipment, connection equipment and a computer platform, wherein the acquisition equipment is responsible for data acquisition and storage of physical signals; the connection equipment is responsible for connecting the acquisition equipment to the computer platform, completing data transfer between the acquisition equipment and the computer platform, and supporting power supply and charging of the acquisition equipment. Typically, the collection device and the docking device are interconnected by a cable. The cable length may be one meter to several tens of meters depending on the environment of use. According to the function requirement, the cable internally comprises several groups of wires, such as a power line group for supplying power to the acquisition equipment, a downlink differential transmission line group for transmitting data from the connection equipment to the acquisition equipment and an uplink differential transmission line group for transmitting data from the acquisition equipment to the connection equipment, when a hot plug detection circuit is required to be established between the acquisition equipment and the connection equipment, physical wires for hot plug detection are often required to be added, and the wire resource shortage in the cable is aggravated.
Disclosure of Invention
The invention mainly aims to provide a device transmission circuit, a device and a system, and aims to solve the problem that a physical wire is required to be additionally added for hot plug identification.
In order to achieve the above object, the present invention provides a device transmission circuit for signal transmission between a master device and a slave device and device hot plug identification, wherein the device transmission circuit includes:
a first differential transmission device including a first transmission line and a second transmission line, input ends of the first transmission line and the second transmission line being connected to a transmitter of the master device, and output ends of the first transmission line and the second transmission line being connected to a receiver of the slave device;
the signal output end of the hot plug identification device is connected with the input end of the first transmission line, and the signal detection end of the hot plug identification device is connected with the input end of the second transmission line;
one coil of the first differential mode inductor is connected in series between the signal output end of the hot plug identification device and the input end of the first transmission line, and the other coil is connected in series between the input end of the second transmission line and the signal detection end of the hot plug identification device;
And one coil of the second differential mode inductor is connected in series between the output end of the first transmission line and one end of the other coil of the second differential mode inductor, and the other end of the other coil is connected with the output end of the second transmission line.
Optionally, the first differential transmission device further includes a first capacitor, a second capacitor, a third capacitor and a fourth capacitor, where the first capacitor is connected in series between the input end of the first transmission line and the transmitter of the master device, the second capacitor is connected in series between the second transmission line and the transmitter of the master device, the third capacitor is connected in series between the output end of the first transmission line and the receiver of the slave device, and the fourth capacitor is connected in series between the output end of the second transmission line and the receiver of the slave device.
Optionally, the first differential transmission device further includes a first common-mode inductance and a second common-mode inductance;
one coil of the first common-mode inductor is connected in series between a first capacitor and an input end of the first transmission line, and the other coil is connected in series between a second capacitor and an input end of the second transmission line; one coil of the second common-mode inductor is connected in series between the output end of the first transmission line and the third capacitor, and the other coil is connected in series between the output end of the second transmission line and the fourth capacitor.
Optionally, the hot plug recognition device includes a photoelectric coupler and a third common-mode inductor, wherein one coil of the third common-mode inductor is connected in series between the light emitting side of the photoelectric coupler and the signal output end of the hot plug recognition device, the input end of the other coil is connected with the signal detection end of the hot plug recognition device, and the output end of the other coil is grounded.
Optionally, the light emitting side includes a light emitting diode, the light emitting diode includes an anode and a cathode, the anode is connected with a positive output end of a first power supply through a first resistor, the cathode is connected with a signal output end of the hot plug identification device through one coil of the third common mode inductor, the light receiving side includes a phototriode, the phototriode includes an emitter and a collector, the collector is connected with a positive output end of a second power supply through a second resistor, and the emitter is grounded.
A device transmission circuit, the transmission circuit comprising: a first differential transmission device including a first transmission line and a second transmission line, input ends of the first transmission line and the second transmission line being connected to a transmitter of the master device, and output ends of the first transmission line and the second transmission line being connected to a receiver of the slave device;
The signal output end of the hot plug identification device is connected with the input end of the first differential mode inductor, and the signal detection end of the hot plug identification device is connected with the output end of the second differential mode inductor;
the input end of the first differential mode inductor is connected with the signal detection end of the hot plug identification device, and the output end of the first differential mode inductor is connected with the first transmission line and the second transmission line respectively;
the input end of the second differential mode inductor is connected with the first transmission line and the output end of the second transmission line respectively, and the output end of the second differential mode inductor is connected with the signal detection end of the hot plug identification device.
Optionally, the signal detection end of the hot plug identification device is connected with the output end of the second differential mode inductor through a physical ground wire.
Optionally, the device transmission circuit further includes a second differential transmission device, a third differential mode inductor and a fourth differential mode inductor, where the second differential transmission device includes a third transmission line and a fourth transmission line, an input end of the third transmission line and an input end of the fourth transmission line are respectively connected with an output end of the second differential mode inductor through the third differential mode inductor, and an output end of the third transmission line and an output end of the fourth transmission line are respectively connected with a signal detection end of the hot plug identification device through the fourth differential mode inductor.
In addition, in order to achieve the above object, the present invention also provides an apparatus transmission device, which includes the apparatus transmission circuit described above.
In addition, in order to achieve the above object, the present invention also provides a device transmission system including a master device, a slave device, and the device transmission circuit as described above, wherein the input ends of the first transmission line and the second transmission line of the device transmission circuit are connected to a transmitter of the master device, and the output ends of the first transmission line and the second transmission line of the device transmission circuit are connected to a receiver of the slave device.
According to the equipment transmission circuit, the device and the system provided by the embodiment of the invention, the hot plug identification device, the first differential mode inductor and the second differential mode inductor are arranged in the equipment transmission circuit to construct a current loop capable of passing direct current signals so as to finish hot plug identification between the main equipment and the slave equipment, the direct current detection signals output by the hot plug identification device are transmitted to the first differential transmission device through the first differential mode inductor, the direct current detection signals transmitted by the first differential transmission device are received through the second differential mode inductor, and the direct current detection signals are transmitted back to the signal detection end of the hot plug identification device according to the second differential mode inductor, so that a closed loop passing direct current signals is formed, and then the connection state of the main equipment and the slave equipment is determined according to the signal detection end of the hot plug identification device. Therefore, hot plug identification is realized without adding physical wires additionally.
Drawings
FIG. 1 is a schematic circuit diagram of a first embodiment of a transmission circuit of the apparatus of the present invention;
FIG. 2 is a schematic circuit diagram of a second embodiment of the transmission circuit of the apparatus of the present invention;
FIG. 3 is a schematic circuit diagram of a third embodiment of the transmission circuit of the apparatus of the present invention;
fig. 4 is a circuit diagram of a fourth embodiment of the transmission circuit of the device of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
In the data transmission process in the prior art, signals are transmitted to the slave device based on the master device, when the distance between the master device and the slave device is short, the signals based on the single-ended transmission can be transmitted based on common single ends, and when the distance is large, the signals based on the single-ended transmission are easy to be interfered by external environment, so that the interference is eliminated by using differential transmission in long-distance signal transmission. Based on the above, in the actual operation process, when the slave device which is not electrified is accessed to the master device which is electrified, the master device needs to detect whether the slave device is accessed, so that a power supply switch is opened to electrify the slave device, and then the two master devices which are electrified transmit alternating current signals based on a differential transmission line; when the powered slave device is pulled out of the master device or a connecting cable connecting the master device and the slave device is disconnected due to external abnormality or line internal abnormality, the master device needs to detect whether the two devices are disconnected or not, in the prior art, hot plug identification is often realized by additionally adding physical wires, and the shortage of wire resources is aggravated.
Based on the above, the invention provides a device transmission circuit which is applied to the hot plug identification of a device provided with a differential transmission line.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a device hot plug identification based on a differential transmission line.
In an embodiment of the present invention, the embodiment of the present invention is not only used for signal transmission between a master device and a slave device, but also used for hot plug identification between the master device and the slave device, and the device transmission circuit includes:
a first differential transmission device including a first transmission line 10 and a second transmission line 20, input ends of the first transmission line 10 and the second transmission line 20 being connected to a transmitter of the master device, and output ends of the first transmission line 10 and the second transmission line 20 being connected to a receiver of the slave device;
the signal output end of the hot plug identification device 30 is connected with the input end of the first transmission line 10, and the signal detection end of the hot plug identification device 30 is connected with the input end of the second transmission line 20;
a first differential-mode inductor, wherein one coil of the first differential-mode inductor is connected in series between the signal output end of the hot plug identification device 30 and the input end of the first transmission line 10, and the other coil is connected in series between the input end of the second transmission line 20 and the signal detection end of the hot plug identification device 30;
And one coil of the second differential mode inductor is connected in series between the output end of the first transmission line 10 and one end of the other coil of the second differential mode inductor, and the other end of the other coil is connected with the output end of the second transmission line 20.
In this embodiment of the present application, the transmitter of the master device may include an LVDS (Low-Voltage Differential Signaling, low voltage differential signaling) transmitter, the transmitter may be configured to output a Low voltage differential signaling signal, the receiver of the slave device may include an LVDS (Low-Voltage Differential Signaling, low voltage differential signaling) receiver, the receiver is configured to receive the Low voltage differential signaling signal output by the transmitter, and the first differential signaling device is configured to connect the master device and the slave device, and transmit the Low voltage differential signaling sent by the transmitter to the receiver, thereby completing data transmission between the master device and the slave device.
Optionally, the first differential transmission device includes a first transmission line 10 and a second transmission line 20, where the first transmission line 10 and the second transmission line 20 are used to transmit a low-voltage differential signal output by a transmitter of the master device to the slave device, and may also be used to transmit a low-voltage differential signal output by the transmitter of the slave device to the master device, and may also be used to transmit a direct-current signal. When the signal to be transmitted of the first differential transmission device is an ac signal, the signal value of the first transmission line 10 is the same as the signal value of the second transmission line 20, and the phases are opposite; when the signal to be transmitted is a dc signal, the dc signal value of the first transmission line 10 and the dc signal value of the second transmission line 20 are both half of the dc signal value.
Optionally, the hot plug identifying device 30 may be disposed in the main device, or may be electrically connected with the main device, where a signal output end of the hot plug identifying device 30 is connected to an input end of the first transmission line 10 and is used to transmit a dc detection signal to the first transmission line 10, and a signal detection end of the hot plug identifying device 30 is connected to an input end of the second transmission line 20 and is used to receive a feedback signal corresponding to the dc detection signal and output a corresponding feedback signal.
Optionally, one coil of the first differential-mode inductor is set as a first coil L1, the first coil L1 is connected in series between the signal output end of the hot plug identification device 30 and the input end of the first transmission line 10, and is configured to receive a dc detection signal output by the hot plug identification device 30 and transmit the dc detection signal to the first transmission line 10, the other coil of the first differential-mode inductor is set as a second coil L2, and the second coil L2 is connected in series between the input end of the second transmission line 20 and the signal detection end of the hot plug identification device 30, and is configured to receive the dc detection signal returned by the second transmission line 20 and transmit the dc detection signal to the signal detection end of the hot plug identification device 30, so that the hot plug identification device 30 receives the dc detection signal and determines the current connection state of the master device and the slave device according to the dc detection signal.
Optionally, the second differential-mode inductor includes a third coil L3 and a fourth coil L4, where one end of the third coil L3 is connected to the output end of the first transmission line 10, and the other end of the third coil L3 is connected to the fourth coil L4, and is used to transmit the received dc detection signal to the fourth coil L4; one end of the fourth coil L4 is connected to the third coil L3, and is configured to receive a dc detection signal of the third coil L3, and the other end is connected to an output end of the second transmission line 20, and is configured to transmit the dc detection signal to the second transmission line 20.
Optionally, the first differential transmission apparatus further includes a first capacitor C1, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4, where the first capacitor C1 is connected in series between the input end of the first transmission line 10 and the transmitter of the master device, the second capacitor C2 is connected in series between the input end of the second transmission line 20 and the transmitter of the master device, the third capacitor C3 is connected in series between the output end of the first transmission line 10 and the receiver of the slave device, and the fourth capacitor C4 is connected in series between the output end of the second transmission line 20 and the receiver of the slave device.
Alternatively, based on the device transmission circuit described above, the device transmission circuit may be used for signal transmission between the master device and the slave device. In the actual signal transmission process, it is necessary to determine whether the slave device establishes a connection with the master device, and it is understood that the master device can only transmit data to be transmitted to the slave device when the master device establishes a connection with the slave device. In this way, in a specific implementation process, after the main device is powered on, the hot plug identification device 30 outputs a dc detection signal, and then the dc detection signal is transmitted to the input end of the first transmission line 10 through the first coil L1 of the first differential mode inductor, and therefore, the dc detection signal cannot flow through the first capacitor C1 due to the effect of direct current blocking by the first capacitor C1, only can flow into the input end of the first transmission line 10 through the first coil L1, the dc detection signal is transmitted to the output end of the first transmission line 10 through the first coil L1, the dc detection signal is received by the output end of the first transmission line 10, the dc detection signal can only be transmitted to the input end of the first transmission line 10 through the third coil L3 of the second differential mode inductor due to the effect of direct current blocking by the third capacitor C3, the dc detection signal can flow through the fourth coil L4 due to the effect of direct current blocking by the second capacitor C4, and the direct current detection signal can not flow through the fourth coil L4 due to the effect of direct current blocking by the fourth capacitor C4 after the direct current detection signal is received by the input end of the first coil L1, and the direct current detection signal can flow through the output end of the first transmission line 10 through the fourth coil L4, and the direct current detection signal can flow through the output end of the fourth transmission line 20 through the second coil 4 due to the effect of direct current detection signal is received through the fourth coil L4, therefore, the dc detection signal cannot flow to the second capacitor C2, but can flow into the signal detection terminal of the hot plug recognition device 30 through the second coil L2. Based on the above device transmission circuit, the direct current detection signal output by the hot plug identification device 30 forms a current loop of the direct current detection signal through the first differential transmission device, the first differential mode inductor and the second differential mode inductor, when the signal detection end of the hot plug identification device 30 receives the direct current detection signal, the connection between the master device and the slave device is proved, and when the signal detection end of the hot plug identification device 30 cannot receive the direct current detection signal, the intermittent connection between the master device and the slave device is proved. And based on the hot plug identification process, powering on the slave device after the fact that the master device and the slave device are successfully connected is detected. And when the master device and the slave device are successfully connected and are in a power-on state, the transmitter of the master device outputs a low-voltage differential signal, and then the low-voltage differential signal is transmitted to the slave device through the first differential transmission device, so that the receiver of the slave device receives the low-voltage differential signal.
Optionally, the low-voltage differential signal includes a differential mode ac signal component and a dc component, in order to avoid inputting the dc component into the first differential transmission device, a first capacitor C1 and a second capacitor C2 are disposed at an input end of the first differential transmission device based on a capacitor having an ac-dc blocking effect, where the first capacitor C1 is connected in series between an input end of the first transmission line 10 and a transmitter of the main device, and is used to prevent the dc component of the low-voltage differential signal from being transmitted to the first transmission line 10 and to transmit the differential mode ac signal of the low-voltage differential signal to the first transmission line 10; the second capacitor C2 is connected in series between the second transmission line 20 and the transmitter of the main device, and is used for preventing the dc component of the low-voltage differential signal from being transmitted to the second transmission line 20 and transmitting the differential-mode ac signal of the low-voltage differential signal to the second transmission line 20. Wherein the capacitance of the capacitor is related to the frequency of the low voltage differential signal. In the actual operation process, the placing mode of the ac transmission assembly may be that two capacitors are arranged in parallel at the input end of the first differential transmission device, or that two capacitors are arranged in parallel at the output end of the first differential transmission device, or that two capacitors are arranged in parallel at the input end of the first differential transmission device, and simultaneously, another two capacitors are arranged in parallel at the output end of the first differential transmission device.
Optionally, during the actual signal transmission process, the master device and the slave device may be disconnected based on an external unplugging operation or an incorrect operation, and at this time, the master device still continues to operate, that is, continues to output the low-voltage differential signal, but based on that the master device and the slave device have been disconnected, the slave device cannot receive the low-voltage differential signal output by the master device, which results in resource loss. Based on the scheme, the device transmission circuit can detect whether the master device and the slave device successfully establish connection in real time. When the disconnection of the master device and the slave device is detected, the master device is controlled to stop outputting a low-voltage differential signal, and when the connection of the master device and the slave device is detected to be established again, the master device is controlled to continuously output the low-voltage differential signal so that the slave device receives the low-voltage differential signal output by the master device.
Optionally, the first differential transmission device further includes a first common-mode inductance and a second common-mode inductance;
one coil of the first common-mode inductor is connected in series between a first capacitor C1 and the input end of the first transmission line 10, and the other coil is connected in series between a second capacitor and the input end of the second transmission line 20;
One coil of the second common-mode inductor is connected in series between the output end of the first transmission line 10 and the third capacitor C3, and the other coil is connected in series between the output end of the second transmission line 20 and the fourth capacitor C4.
Optionally, the first common-mode inductor and the second common-mode inductor are four-terminal devices formed by winding 2 coils with the same turns and the same phase on the same magnetic core. The inductance resistance of the first common-mode inductor and the second common-mode inductor to the differential-mode alternating current signal is very small so as to be easy for the differential-mode alternating current signal to pass through, and the inductance resistance of the common-mode high-frequency interference signal is very large so as to inhibit the common-mode high-frequency interference signal from passing through; the fifth coil L5 is connected in series between the first capacitor C1 and the input end of the first transmission line 10, and is used for transmitting a differential mode ac signal output by the transmitter of the main device and suppressing transmission of a common mode high frequency interference signal to the transmitter of the main device; the sixth coil L6 is connected in series between the second capacitor and the input end of the second transmission line 20, and is used for transmitting the differential mode ac signal output by the transmitter of the main device and suppressing the transmission of the common mode interference signal to the transmitter of the main device; the seventh coil L7 is connected in series between the output end of the first transmission line 10 and the third capacitor C3, and is configured to transmit a differential mode ac signal of the first transmission line 10 to the slave device and suppress a common mode high frequency interference signal from being transmitted to a receiver of the slave device; the eighth coil L8 is connected in series between the output end of the second transmission line 20 and the fourth capacitor C4, and is used for transmitting the differential mode ac signal of the second transmission line 20 to the slave device and suppressing the transmission of the common mode high frequency interference signal to the receiver of the slave device.
In this embodiment of the present application, when the transmission of an ac signal (i.e., data transmission) between the master device and the slave device is completed according to the first differential transmission device, a first differential inductance and a second differential inductance are set in the first differential transmission device, and a current loop capable of transmitting a dc signal is constructed according to the first differential inductance, the second differential inductance and the first differential transmission device, so that the first differential transmission device is connected with the hot plug identification device 30, so as to form a device transmission line for hot plug identification of the device, the dc detection signal is transmitted according to the current loop, so that whether the connection between the master device and the slave device is successfully established is determined according to the dc detection signal, and when the detection end of the hot plug identification device 30 receives the dc detection signal, the dc detection signal is proved to form a complete current loop, so that the connection between the master device and the slave device is successfully established is determined; when the signal detection end does not receive the direct current detection signal, the direct current detection signal is proved to be incapable of forming a complete current loop, and further the disconnection of the master device and the slave device is determined. According to the embodiment of the application, hot plug identification between the master device and the slave device is completed under the condition that additional physical wires are not required to be added, and the wire resources are saved.
Alternatively, based on the first embodiment, referring to fig. 2, the hot plug identifying device 30 includes a photo coupler and a third common-mode inductor, wherein one coil of the third common-mode inductor is connected in series between the light emitting side of the photo coupler and the signal output end of the hot plug identifying device 30, the input end of the other coil is connected with the signal detection end of the hot plug identifying device, and the output end of the other coil is grounded.
In this embodiment of the present application, the optocoupler includes an optical emission side, the third common-mode inductor includes a ninth coil L9 and a tenth coil L10, the ninth coil L9 of the third common-mode inductor is connected in series between the optical emission side and a signal output end of the hot plug identification device 30, and is configured to transmit a direct current detection signal to the first coil L1 of the first differential-mode inductor through the signal output end of the hot plug identification device 30, an input end of the tenth coil L10 is connected to a signal detection end of the hot plug identification device, and is configured to receive the direct current detection signal returned by the second transmission line 20, and an output end of the fourth coil L10 is grounded; the photocoupler further comprises a light receiving side for outputting a corresponding feedback signal according to the response state of the light emitting side to the direct current detection signal.
In yet another embodiment, the light emitting side includes a light emitting diode, the light emitting diode includes an anode and a cathode, the anode is connected to a positive output terminal of the first power supply through a first resistor, the cathode is connected to a signal output terminal of the hot plug recognition device through one of the coils of the third common mode inductor, the light receiving side includes a phototransistor, the phototransistor includes an emitter and a collector, the collector is connected to a positive output terminal of the second power supply through a second resistor, and the emitter is grounded.
In this embodiment of the present application, the light emitting side includes a light emitting diode, an anode of the light emitting diode is connected to a positive output end of a first power supply through a first resistor, a cathode of the light emitting diode is connected to a signal output end of the hot plug identification device 30 through a ninth coil L9 of the third common mode inductor, and is configured to transmit a direct current detection signal to the first transmission line 10 through the hot plug identification device 30, when the direct current detection signal output by the first power supply forms a current closed loop, that is, when the direct current detection signal returns to the light emitting side through a signal detection end of the hot plug identification device 30, the light emitting diode is turned on, and otherwise is turned off. The first power supply may be a direct current power supply for the light emitting diode to work, for example, a 5V or 3.3V output power supply for driving the timing controller to work, and the first power supply may also be implemented by using a storage battery, for example, a lithium battery, a secondary charging dry battery, a button battery, and the like. The voltage output by the first power supply is smaller than the voltage of the light emitting diode when the light emitting diode is broken down, namely smaller than the breakdown voltage of the light emitting diode.
In the actual operation process, after the master device is powered on, when the master device and the slave device are successfully connected, a closed loop is formed between the master device and the slave device through a first differential transmission device, a direct current detection signal is input to the first transmission line 10 according to the first power supply, the direct current detection signal is transmitted back to the signal detection end of the hot plug identification device 30 through the closed loop, then the light emitting diode is turned on, and the light emitting diode emits light.
When the master device and the slave device are disconnected, a dc detection signal is input to the first transmission line 10 according to the first power supply, and a closed loop is not formed between the master device and the slave device, the signal detection end of the hot plug identifying device 30 cannot receive the dc detection signal, and the light emitting diode is not turned on and does not emit light.
Based on this, in the embodiment of the present application, whether the master device and the slave device are connected is determined based on whether the light emitting diode emits light (i.e., is turned on), when the light emitting diode emits light (i.e., is turned on), it is proved that a closed loop is formed between the master device and the slave device, and it is proved that a connection is established between the master device and the slave device, whereas when the light emitting diode does not emit light (i.e., is turned off), it is proved that a closed loop is not formed between the master device and the slave device, and it is proved that a connection is disconnected between the master device and the slave device.
Optionally, the light receiving side includes a phototransistor, where the phototransistor corresponds to the light emitting diode, and emits light when the light emitting diode is turned on, and when the phototransistor receives a light signal emitted by the light emitting diode, the phototransistor is turned on, and at this time, a collector electrode of the phototransistor is at a low level; when the light emitting diode is not conducted, the light emitting diode does not emit light, and the phototriode cannot capture light signals, namely, the phototriode is not conducted, and at the moment, the collector electrode of the phototriode is at a high level.
In the actual operation process, the collector electrode of the phototriode is provided with an identification detection point, and the identification detection point is used for feeding back the state of the phototriode. The emitter of the phototransistor is grounded, the collector of the phototransistor is connected with the second power supply through a second resistor, wherein the second power supply outputs bias voltage to the phototransistor, when the master device is connected with the slave device, the phototransistor is conducted, and when the collector is at a low level, the identification detection point is at a low level; otherwise, the collector is at a high level, i.e. the identification detection point is at a high level.
Based on the above, when the connection between the master device and the slave device is identified, the state of the identification detection point can be determined directly, when the identification detection point is at a low level, the successful connection between the master device and the slave device is determined, and when the identification detection point is at a high level, the master device and the slave device are disconnected.
In this embodiment of the present application, through being in the master device sets up hot plug recognition device 30, hot plug recognition device 30 includes emitting diode and phototriode, judges according to the photoelectric coupler that emitting diode and phototriode formed by combining whether master device and slave device establish the connection when the collector electrode of phototriode is low level, proves the phototriode switches on, and then confirms the emitting diode that corresponds with the phototriode switches on, and then confirms form closed circuit between master device and the slave device, prove connect between master device and the slave device. When the collector electrode is in a high level, the phototriode is proved to be cut off, then the light emitting diode is confirmed to be cut off, then the fact that a closed loop is not formed between the main equipment and the slave equipment is confirmed, and the connection between the main equipment and the slave equipment is proved to be disconnected.
Optionally, based on all the embodiments described above, referring to fig. 3, an embodiment of the present invention further provides another device transmission circuit, where the device transmission circuit includes:
a first differential transmission device including a first transmission line 10 and a second transmission line 20, input ends of the first transmission line 10 and the second transmission line 20 being connected to a transmitter of the master device, and output ends of the first transmission line 10 and the second transmission line 20 being connected to a receiver of the slave device;
the signal output end of the hot plug identification device 30 is connected with the input end of the first differential mode inductor, and the signal detection end of the hot plug identification device 30 is connected with the output end of the second differential mode inductor;
the input end of the first differential mode inductor is connected with the signal output end of the hot plug identification device 30, and the output end of the first differential mode inductor is respectively connected with the first transmission line 10 and the second transmission line 20;
the input end of the second differential mode inductor is connected with the output ends of the first transmission line 10 and the second transmission line 20 respectively, and the output end of the second differential mode inductor is connected with the signal detection end of the hot plug identification device 30.
In this embodiment of the present application, the first differential transmission device is the same as the first differential transmission device in the first embodiment, and will not be described herein.
Optionally, the signal output end of the hot plug identifying device 30 is connected to the input end of the first differential mode inductor, the input end of the first differential mode inductor is formed by combining the input end of the first coil L1 and the input end of the second coil L2, and the combination mode is that a central spindle nose is arranged at the connection position of the input end of the first coil L1 and the input end of the second coil L2. It is to be understood that the connection of the signal output end of the hot plug identifying device 30 with the input end of the first differential mode inductor is equivalent to the connection of the signal output end of the hot plug identifying device 30 with the center shaft head of the first differential mode inductor. In addition, the signal detection end of the hot plug identification device 30 is connected with the output end of the second differential mode inductor, the output end of the second differential mode inductor is formed by combining the output end of the third coil L3 and the output end of the fourth coil L4, and a central shaft head is arranged at the connection position of the output end of the third coil L3 and the output end of the fourth coil L4, and it can be understood that the connection of the signal detection end of the hot plug identification device 30 and the output end of the second differential mode inductor is equivalent to the connection of the signal detection end of the hot plug identification device 30 and the central shaft head of the second differential mode inductor.
Optionally, the signal detection end of the hot plug identification device 30 is connected to the output end of the second differential mode inductor through a physical ground wire 40. In order to form a closed loop between the master device and the slave device, the signal detection end of the hot plug identification device 30 and the output end of the second differential mode inductance of the first differential transmission device are connected by a physical ground wire 40 in order to form a closed loop based on the first differential device, the physical ground wire 40, the first differential mode inductance, the second differential mode inductance and the hot plug identification device 30.
In a specific implementation process, the hot plug identification device 30 transmits the dc detection signal to the first transmission line 10 and the second transmission line 20 of the first differential transmission device through the input end of the first differential mode inductor, the first transmission line 10 and the second transmission line 20 transmit the dc detection signal to the third coil L3 and the fourth coil L4 of the second differential mode inductor, and further transmit the dc detection signal to the physical ground wire 40 through the output end of the second differential mode inductor, and after the physical ground wire 40 receives the dc detection signal, further transmit the dc detection signal to the signal detection end of the hot plug identification device 30, so as to form a dc closed loop of the dc detection signal. When the signal detection end captures the direct current detection signal, a closed current loop is formed between the main equipment and the slave equipment, namely connection is established between the main equipment and the slave equipment, and when the signal detection end does not acquire the direct current signal, no current loop is formed between the main equipment and the slave equipment, namely connection is disconnected between the main equipment and the slave equipment.
Optionally, the signal detection end of the hot plug identifying device 30 is connected to the output end of the second differential mode inductor through a physical ground wire 40, in some cases, a high-frequency interference signal generated by the outside is transmitted to the second differential mode inductor through the physical ground wire 40, and then the second differential mode inductor transmits the high-frequency interference signal to the first differential mode inductor, so that the high-frequency interference signal appears in the actual signal transmission process, based on this, a low-pass filter 50 is configured between the physical ground wire 40 and the output end of the second differential mode inductor, and the low-pass filter 50 is composed of two capacitors and a common inductor and is used for filtering the high-frequency interference signal introduced from the physical ground wire 40 into the first differential mode inductor.
Optionally, the input end of the first differential mode inductor is connected to the signal output end of the hot plug identifying device 30, and the output end of the first differential mode inductor is connected to the input ends of the first transmission line 10 and the second transmission line 20, respectively, and is configured to receive the dc detection signal output by the hot plug identifying device 30 and transmit the dc detection signal to the first coil L1 and the second coil L2, so that the first coil L1 transmits the dc detection signal to the first transmission line 10 and the second coil L2 transmits the dc detection signal to the second transmission line 20.
Optionally, the input end of the second differential mode inductor includes an input end of the third coil L3 and an input end of the fourth coil L4, where the input end of the third coil L3 is connected to the output end of the first transmission line 10 and is used to receive the dc detection signal flowing through the first transmission line 10, and the input end of the fourth coil L4 is connected to the output end of the second transmission line 20 and is used to receive the dc detection signal flowing through the second transmission line 20. The output end of the second differential mode inductor is connected with the signal detection end of the hot plug identification device 30, and is used for transmitting the direct current detection signal to the signal detection end of the hot plug identification device 30.
In this embodiment of the present application, a first differential mode inductor is set at an input end of the first differential transmission device, another end of the first differential mode inductor is connected to a signal output end of the hot plug identification device 30, a second differential mode inductor is set at an output end of the first differential transmission device, and another end of the second differential mode inductor is connected to a signal detection end of the hot plug identification device 30 through a physical ground wire 40, so as to form a device transmission circuit for passing through a direct current detection signal.
Optionally, based on the third embodiment, referring to fig. 4, in a further embodiment, the device transmission circuit further includes a second differential transmission device, a third differential mode inductor, and a fourth differential mode inductor, where the second differential transmission device includes a third transmission line and a fourth transmission line, an input end of the third transmission line and an input end of the fourth transmission line are respectively connected with an output end of the second differential mode inductor through the third differential mode inductor, and an output end of the third transmission line and an output end of the fourth transmission line are respectively connected with a signal detection end of the hot plug identification device through the fourth differential mode inductor.
In this embodiment of the present application, the second differential transmission device may be used for signal transmission between the master device and the slave device, where the second differential transmission device includes a third transmission line 60 and a fourth transmission line 70, input ends of the third transmission line 60 and the fourth transmission line 70 are connected to a transmitter of the slave device, and output ends of the third transmission line 60 and the fourth transmission line 70 are connected to a receiver of the master device, and are used for transmitting a low-voltage differential signal output by the transmitter of the slave device to the receiver of the master device, where the first differential transmission device and the second differential transmission device are used for signal mutual transmission between the master device and the slave device based on the first differential transmission device of the first embodiment.
Optionally, the second differential transmission device is configured to be used for hot plug identification between the master device and the slave device by matching with the first differential transmission device, and in an actual operation process, an input end of the third transmission line 60 and an input end of the fourth transmission line 70 are respectively connected with an output end of the second differential mode inductor, and are configured to receive a dc detection signal output by the second differential mode inductor and transmit the dc detection signal to the third transmission line 60 and the third transmission line 70 respectively, so that the third transmission line 60 and the fourth transmission line transmit the dc detection signal to a signal detection end of the hot plug identification device 30. The output ends of the third transmission line 60 and the fourth transmission line are respectively connected to the signal detection end of the hot plug identification device 30, and are used for transmitting the direct current detection signal to the signal detection end of the hot plug identification device 30.
Optionally, the device transmission circuit further includes a third differential mode inductor and a fourth differential mode inductor, where an input end of the third differential mode inductor is connected to an output end of the second differential mode inductor, and an output end of the third differential mode inductor is connected to an input end of the third transmission line 60 and an input end of the fourth transmission line 70 respectively; the input end of the fourth differential mode inductor is connected to the output ends of the third transmission line 60 and the fourth transmission line 70, and the output end of the fourth differential mode inductor is connected to the signal detection end of the hot plug identification device, where the third differential mode inductor includes an eleventh coil L11 and a twelfth coil L12, and the fourth differential mode inductor includes a thirteenth coil L13 and a fourteenth coil L14.
Optionally, the device transmission circuit further includes a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, and an eighth capacitor C8, where the functions of the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, and the eighth capacitor C8 and the first capacitor C1, the second capacitor C2, the third capacitor C3, and the fourth capacitor C4 are the same, and are not described herein again.
Optionally, the device transmission circuit further includes a fourth common-mode inductor and a fifth common-mode inductor, where the fourth common-mode inductor includes a fifteenth coil L15 and a sixteenth coil L16, and the fifth common-mode inductor includes a seventeenth coil L17 and an eighteenth coil L19, and the fourth common-mode inductor and the fifth common-mode inductor have the same functions as the first common-mode inductor and the second common-mode inductor, which are not described herein.
Optionally, based on the device transmission circuit, a specific flow direction of the direct current detection signal is: after the main device is powered on, the hot plug identification device 30 outputs a direct current detection signal to the input end of the connected first differential mode inductor, when the first differential mode inductor receives the direct current detection signal, the direct current detection signal is transmitted to the input end of the second differential mode inductor through the first transmission line 10 and the second transmission line 20 respectively, then the direct current detection signal is transmitted to the input end of the third differential mode inductor through the output end of the second differential mode inductor, then the direct current detection signal is transmitted to the input end of the fourth differential mode inductor through the output end of the third differential mode inductor, and then the direct current detection signal is transmitted to the signal detection end of the hot plug identification device 30 through the output end of the fourth differential mode inductor, so as to form a closed loop of the direct current detection signal. When the signal detection end of the hot plug identification device 30 obtains the dc detection signal, the hot plug identification device 30 outputs a low level, which represents that connection is established between the master device and the slave device, and when the signal detection end of the hot plug identification device 30 cannot obtain the dc detection signal, the hot plug identification device 30 outputs a high level, which represents that connection is disconnected between the master device and the slave device.
In the embodiment of the application, the first differential transmission device and the second differential transmission device are matched to form the equipment transmission circuit of the through direct current detection signal, and the equipment transmission circuit can realize hot plug identification between the master equipment and the slave equipment when finishing signal mutual transmission of the master equipment and the slave equipment.
Based on all the above embodiments, the present invention further provides a device transmission method, where the device transmission method is applied to hot plug identification of a device transmission circuit as described above, and the device transmission method includes: after the main device is powered on, the hot plug identification device 30 outputs a direct current detection signal and transmits the direct current detection signal to the first differential transmission device; and further, the state of the identification detection point of the hot plug identification device 30 is obtained according to the direct current detection signal, and then whether the master device and the slave device are connected is judged according to the state of the identification detection point of the hot plug identification device 30.
Optionally, the step of determining whether the master device and the slave device establish a connection according to the state of the identification detection point of the hot plug identification device 30 includes: when the identification detection point of the hot plug identification device 30 is at a low level, determining that the master device and the slave device are connected; when the identification detection point of the hot plug identification device 30 is at a high level, it is determined that the master device is disconnected from the slave device.
The invention also provides a device transmission device, which comprises the device transmission circuit. The detailed structure of the device transmission circuit can refer to the above embodiments, and will not be described herein; it can be understood that, because the device transmission circuit is used in the device transmission apparatus of the present invention, embodiments of the device transmission apparatus of the present invention include all technical solutions of all embodiments of the device transmission circuit, and the achieved technical effects are identical, which is not described herein again.
The present invention also provides a device transmission system comprising a master device, a slave device and a device transmission circuit as described above, the first transmission line 10 and the second transmission line 20 of the device transmission circuit having an input connected to a transmitter of the master device and the first transmission line 10 and the second transmission line 20 of the device transmission circuit having an output connected to a receiver of the slave device.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (10)
1. A device transmission circuit for signal transmission and device hot plug identification between a master device and a slave device, the device transmission circuit comprising:
a first differential transmission device including a first transmission line and a second transmission line, input ends of the first transmission line and the second transmission line being connected to a transmitter of the master device, and output ends of the first transmission line and the second transmission line being connected to a receiver of the slave device;
the signal output end of the hot plug identification device is connected with the input end of the first transmission line, and the signal detection end of the hot plug identification device is connected with the input end of the second transmission line;
one coil of the first differential mode inductor is connected in series between the signal output end of the hot plug identification device and the input end of the first transmission line, and the other coil is connected in series between the input end of the second transmission line and the signal detection end of the hot plug identification device;
and one coil of the second differential mode inductor is connected in series between the output end of the first transmission line and one end of the other coil of the second differential mode inductor, and the other end of the other coil is connected with the output end of the second transmission line.
2. The device transmission circuit of claim 1, wherein the first differential transmission means further comprises a first capacitor connected in series between the input of the first transmission line and the transmitter of the master device, a second capacitor connected in series between the second transmission line and the transmitter of the master device, a third capacitor connected in series between the output of the first transmission line and the receiver of the slave device, and a fourth capacitor connected in series between the output of the second transmission line and the receiver of the slave device.
3. The device transmission circuit of claim 2, wherein the first differential transmission means further comprises a first common-mode inductance and a second common-mode inductance;
one coil of the first common-mode inductor is connected in series between a first capacitor and an input end of the first transmission line, and the other coil is connected in series between a second capacitor and an input end of the second transmission line; one coil of the second common-mode inductor is connected in series between the output end of the first transmission line and the third capacitor, and the other coil is connected in series between the output end of the second transmission line and the fourth capacitor.
4. The device transmission circuit according to claim 1, wherein the hot plug recognition device comprises a photo coupler and a third common-mode inductor, one coil of the third common-mode inductor is connected in series between a light emitting side of the photo coupler and a signal output end of the hot plug recognition device, an input end of the other coil is connected with a signal detection end of the hot plug recognition device, and an output end of the other coil is grounded.
5. The device transmission circuit of claim 4, wherein the light emitting side comprises a light emitting diode, the light emitting diode comprises an anode and a cathode, the anode is connected with a positive output terminal of a first power supply through a first resistor, the cathode is connected with a signal output terminal of the hot plug identification device through one coil of the third common mode inductor, the light receiving side comprises a phototransistor, the phototransistor comprises an emitter and a collector, the collector is connected with a positive output terminal of a second power supply through a second resistor, and the emitter is grounded.
6. A device transmission circuit, the device transmission circuit comprising:
The first differential transmission device comprises a first transmission line and a second transmission line, wherein the input ends of the first transmission line and the second transmission line are connected with a transmitter of a master device, and the output ends of the first transmission line and the second transmission line are connected with a receiver of a slave device;
the signal output end of the hot plug identification device is connected with the input end of the first differential mode inductor, and the signal detection end of the hot plug identification device is connected with the output end of the second differential mode inductor;
the input end of the first differential mode inductor is connected with the signal output end of the hot plug identification device, and the output end of the first differential mode inductor is respectively connected with the input ends of the first transmission line and the second transmission line;
the input end of the second differential mode inductor is connected with the first transmission line and the output end of the second transmission line respectively, and the output end of the second differential mode inductor is connected with the signal detection end of the hot plug identification device.
7. The device transmission circuit of claim 6, wherein the signal detection terminal of the hot plug identification means is connected to the output terminal of the second differential mode inductance through a physical ground line.
8. A device transmission circuit, the device transmission circuit comprising:
the first differential transmission device comprises a first transmission line and a second transmission line, wherein the input ends of the first transmission line and the second transmission line are connected with a transmitter of a master device, and the output ends of the first transmission line and the second transmission line are connected with a receiver of a slave device;
the signal output end of the hot plug identification device is connected with the input end of the first differential mode inductor, and the signal detection end of the hot plug identification device is connected with the output end of the second differential mode inductor;
the input end of the first differential mode inductor is connected with the signal output end of the hot plug identification device, and the output end of the first differential mode inductor is respectively connected with the input ends of the first transmission line and the second transmission line;
the input end of the second differential mode inductor is connected with the output ends of the first transmission line and the second transmission line respectively;
the second differential transmission device comprises a third transmission line and a fourth transmission line, wherein the input end of the third transmission line and the input end of the fourth transmission line are respectively connected with the output end of the second differential inductor through the third differential inductor, the output end of the third transmission line and the output end of the fourth transmission line are respectively connected with the signal detection end of the hot plug identification device through the fourth differential inductor, the input ends of the third transmission line and the fourth transmission line are connected with the transmitter of the slave device, and the output ends of the third transmission line and the fourth transmission line are connected with the receiver of the master device.
9. A device transmission apparatus comprising a device transmission circuit as claimed in any one of claims 1 to 5 or a device transmission circuit as claimed in any one of claims 6 to 8.
10. A device transmission system comprising a master device, a slave device and a device transmission circuit according to any one of claims 1 to 5 or a device transmission circuit according to any one of claims 6 to 8, the input ends of the first and second transmission lines of the device transmission circuit being connected to a transmitter of the master device, the output ends of the first and second transmission lines of the device transmission circuit being connected to a receiver of the slave device.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201042053Y (en) * | 2007-03-08 | 2008-03-26 | 四川长虹电器股份有限公司 | Hot swap processing circuit for HDMI signal receiver |
| CN202840503U (en) * | 2012-09-17 | 2013-03-27 | 深圳远征技术有限公司 | On-line hot-plugging apparatus with thunder and lightning prevention function |
| CN103220411A (en) * | 2013-03-20 | 2013-07-24 | 北京小米科技有限责任公司 | Method and device of hot plug detection and mobile terminal |
| TW201446073A (en) * | 2013-05-28 | 2014-12-01 | Richtek Technology Corp | Light emitting device control circuit and hot-swapping detection circuit thereof and light emitting device circuit therefor |
| CN206002638U (en) * | 2016-08-19 | 2017-03-08 | 广东美的制冷设备有限公司 | Home appliance and be used for its fault arc detection device |
| CN106774772A (en) * | 2017-01-16 | 2017-05-31 | 郑州云海信息技术有限公司 | A kind of hot plug module electric supply installation, method and system |
| CN107091995A (en) * | 2017-07-05 | 2017-08-25 | 东莞团诚自动化设备有限公司 | Monitor the method and device of communication base station and electric power power supply state |
| CN108880828A (en) * | 2018-06-29 | 2018-11-23 | 浙江大华技术股份有限公司 | A kind of method of power supply unit PSE and common mode differential mode adaptation power supply |
| CN109614286A (en) * | 2018-12-04 | 2019-04-12 | 郑州云海信息技术有限公司 | A kind of hot plug recognition methods, device and the medium of PCIe device |
| CN112100106A (en) * | 2020-09-30 | 2020-12-18 | 深圳市嘉润原新显科技有限公司 | HDMI positive and negative plug control circuit and terminal display device |
| CN112214439A (en) * | 2020-10-23 | 2021-01-12 | 苏州浪潮智能科技有限公司 | Hot plug self-identification circuit and identification method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9871516B2 (en) * | 2014-06-04 | 2018-01-16 | Lattice Semiconductor Corporation | Transmitting apparatus with source termination |
-
2021
- 2021-07-07 CN CN202110770943.2A patent/CN113485955B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201042053Y (en) * | 2007-03-08 | 2008-03-26 | 四川长虹电器股份有限公司 | Hot swap processing circuit for HDMI signal receiver |
| CN202840503U (en) * | 2012-09-17 | 2013-03-27 | 深圳远征技术有限公司 | On-line hot-plugging apparatus with thunder and lightning prevention function |
| CN103220411A (en) * | 2013-03-20 | 2013-07-24 | 北京小米科技有限责任公司 | Method and device of hot plug detection and mobile terminal |
| TW201446073A (en) * | 2013-05-28 | 2014-12-01 | Richtek Technology Corp | Light emitting device control circuit and hot-swapping detection circuit thereof and light emitting device circuit therefor |
| CN206002638U (en) * | 2016-08-19 | 2017-03-08 | 广东美的制冷设备有限公司 | Home appliance and be used for its fault arc detection device |
| CN106774772A (en) * | 2017-01-16 | 2017-05-31 | 郑州云海信息技术有限公司 | A kind of hot plug module electric supply installation, method and system |
| CN107091995A (en) * | 2017-07-05 | 2017-08-25 | 东莞团诚自动化设备有限公司 | Monitor the method and device of communication base station and electric power power supply state |
| CN108880828A (en) * | 2018-06-29 | 2018-11-23 | 浙江大华技术股份有限公司 | A kind of method of power supply unit PSE and common mode differential mode adaptation power supply |
| CN109614286A (en) * | 2018-12-04 | 2019-04-12 | 郑州云海信息技术有限公司 | A kind of hot plug recognition methods, device and the medium of PCIe device |
| CN112100106A (en) * | 2020-09-30 | 2020-12-18 | 深圳市嘉润原新显科技有限公司 | HDMI positive and negative plug control circuit and terminal display device |
| CN112214439A (en) * | 2020-10-23 | 2021-01-12 | 苏州浪潮智能科技有限公司 | Hot plug self-identification circuit and identification method |
Non-Patent Citations (3)
| Title |
|---|
| CBM-TOF超级模块高密度、高精度时间测量方法;郑佳俊;中国优秀硕士学位论文全文数据库基础科学辑;20180115(第01期);全文 * |
| 电力线通讯辐射噪声的预估与抑制;董颖华等;东南大学学报(自然科学版);20091120(第S2期);全文 * |
| 采用模量参数识别的三相重合闸永久性故障判别原理;索南加乐;梁振锋;宋国兵;;中国电机工程学报;20100905(第25期);全文 * |
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