CN216817392U - Docking station equipment access detection circuit and equipment - Google Patents
Docking station equipment access detection circuit and equipment Download PDFInfo
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- CN216817392U CN216817392U CN202123318818.2U CN202123318818U CN216817392U CN 216817392 U CN216817392 U CN 216817392U CN 202123318818 U CN202123318818 U CN 202123318818U CN 216817392 U CN216817392 U CN 216817392U
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Abstract
The utility model discloses a docking station device access detection circuit and device, and relates to the technical field of docking station access detection. The docking station equipment access detection circuit is provided with a signal input module, a switch module and a detection module which are sequentially connected, and the switch module is also connected with a power supply module; the signal input module is used for inputting a control signal to the switch module when the docking station device is accessed; the power supply module is used for accessing a first power supply; the switch module is used for connecting a path between the power supply module and the detection module according to the control signal; the detection module is used for detecting the first power supply when the docking station equipment is connected, so that the docking station equipment is connected and detected, whether the docking station equipment is connected or not is detected through a control signal, the detection process is simple and quick, the occupied size is small, redundant hardware equipment is not needed, and the pin resource and the cost of the connector are saved.
Description
Technical Field
The utility model relates to the field of docking station access detection, in particular to a docking station device access detection circuit and a docking station device access detection device.
Background
With the continuous development of computers and the increasing application scenes of computers, various docking devices have been derived to extend the functions of computers.
The access detection of the existing docking station device generally uses a special signal line as a detection signal, and then an IC judges the change of the signal to detect whether the docking device is accessed, so that the number of pins of the docking station connector is increased, and the pins of the docking station connector occupy the input and output pins of a control chip.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a docking station device access detection circuit and a docking station device access detection device, and aims to solve the technical problem that the docking station device access detection process in the prior art is complex.
To achieve the above object, the present invention provides a docking device access detection circuit, which includes: the device comprises a signal input module, a switch module and a detection module which are sequentially connected, wherein the switch module is also connected with a power supply module;
the signal input module is used for inputting a control signal to the switch module when the docking station device is accessed;
the power supply module is used for accessing a first power supply;
the switch module is used for connecting a path between the power supply module and the detection module according to the control signal;
the detection module is used for detecting the first power supply when the docking station device is connected so as to realize the connection detection of the docking station device.
Optionally, the switch module comprises: the first switch circuit, the second switch circuit and the third switch circuit are connected in sequence;
the first switch circuit is used for being closed according to the control signal and transmitting the control signal to the second switch circuit;
the second switch circuit is used for closing according to the control signal and transmitting the control signal to the third switch circuit;
and the third switch circuit is used for closing according to the control signal and communicating a passage between the power supply module and the detection module.
Optionally, the first switching circuit comprises: the MOS transistor comprises a first MOS transistor, a first resistor and a second resistor;
the grid electrode of the first MOS tube is respectively connected with the signal input module, the first end of the first resistor and the second end of the second resistor, the source electrode of the first MOS tube is grounded, and the drain electrode of the first MOS tube is respectively connected with the power supply module and the detection module;
the second end of the first resistor is grounded;
and the first end of the second resistor is connected with the power supply module.
Optionally, the second switching circuit comprises: the second MOS tube, the third resistor and the fourth resistor;
the grid electrode of the second MOS tube is respectively connected with the first switch circuit, the second end of the third resistor and the first end of the fourth resistor, the source electrode of the second MOS tube is grounded, and the drain electrode of the second MOS tube is connected with the detection module;
the first end of the third resistor is connected with the power supply module;
and the second end of the fourth resistor is grounded.
Optionally, the second switching circuit further comprises: a first capacitor;
the first end of the first capacitor is connected with the second end of the third resistor, the first switch circuit, the first end of the fourth resistor and the grid electrode of the second MOS tube, and the second end of the first capacitor is grounded.
Optionally, the third switching circuit comprises: the third MOS tube, a fifth resistor, a sixth resistor, a seventh resistor and a second capacitor;
a grid electrode of the third MOS transistor is connected with the first end of the second capacitor and the second end of the sixth resistor respectively, a source electrode of the third MOS transistor is connected with the second end of the second capacitor, the second end of the seventh resistor and the power module respectively, and a drain electrode of the third MOS transistor is connected with the detection module;
a first end of the fifth resistor is connected to the second switch circuit, and a second end of the fifth resistor is connected to a first end of the sixth resistor and a first end of the seventh resistor, respectively.
Optionally, the signal input module includes: a signal input terminal connected with the switch module;
the signal input end is used for accessing a control signal to the switch module when the docking station device is accessed.
Optionally, the power module comprises: the power input end is connected with the switch module;
and the power supply input end is used for accessing a first power supply and supplying power to the switch module.
Optionally, the detection module includes: the power supply detection end is connected with the switch module;
the power supply detection end is used for detecting the output first power supply when the docking station device is connected.
To achieve the above object, the present invention further provides a device including the docking device access detection circuit described above.
In the utility model, a signal input module, a switch module and a detection module which are connected in sequence are arranged in a docking station device access detection circuit, and the switch module is also connected with a power supply module; the signal input module is used for inputting a control signal to the switch module when the docking station device is accessed; the power supply module is used for accessing a first power supply; the switch module is used for connecting a path between the power supply module and the detection module according to the control signal; the detection module is used for detecting the first power supply when the docking station equipment is connected, so that the docking station equipment is connected and detected, whether the docking station equipment is connected or not is detected through a control signal, the detection process is simple and quick, the occupied size is small, redundant hardware equipment is not needed, and the pin resource and the cost of the connector are saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of a first embodiment of an access detection circuit of a docking station device according to the present invention;
fig. 2 is a schematic structural diagram of a docking device access detection circuit according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a docking device access detection circuit according to a third embodiment of the present invention.
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Signal input module | R1～R7 | First to |
| 101 | Signal input terminal | C1～C2 | First to |
| 20 | |
30 | |
| 201 | First switch circuit | VCC1_OUT | Power |
| 202 | |
40 | |
| 203 | Third switch circuit | VCC1_IN | Power input terminal |
| Q1～Q3 | First to third MOS transistors |
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should be considered to be absent and not within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a docking device access detection circuit according to a first embodiment of the present invention. The present invention proposes a first embodiment of a docking device access detection circuit.
In this embodiment, the docking device access detection circuit includes: the device comprises a signal input module 10, a switch module 20 and a detection module 30 which are connected in sequence, wherein the switch module 20 is also connected with a power supply module 40; the signal input module 10 is configured to input a control signal to the switch module 20 when a docking station device is connected; the power supply module 40 is used for accessing a first power supply; the switch module 20 is configured to connect a path between the power module 40 and the detection module 30 according to the control signal; the detection module 30 is configured to detect the first power source when the docking station device is connected, so as to implement docking station device connection detection.
It should be noted that, when the docking station device is connected, the signal input terminal 10 connects the ground wire of the docking station device to the signal input terminal 10, and when the docking station device is connected, the signal input terminal 10 connects the control signal and transmits the control signal to the switch module 20, the switch module 20 is connected to the signal input terminal 10, the detection module 30 and the power module 40, and the switch module 20 is closed according to the control signal transmitted by the signal input terminal 10 to connect the power module 40 and the detection module 30.
In a specific implementation, the power module 40 is configured to access a first power source, where the first power source may be an external power source or a charging power source, and provides a voltage to the switch circuit 20 through the first power source, and at the same time, the switch circuit 20 is turned on according to the control signal and the first power source, and transmits the voltage of the first power source to the detection module 30, and after the detection module 30 detects the first power source, it indicates that the docking station device is accessed at this time, and then the first power source may be transmitted to a subsequent circuit, so as to ensure that the docking station device operates normally on the subsequent circuit. When the docking station device is not connected, the signal input end 10 cannot receive the control signal, the switch circuit 20 is in a disconnected state, the first power supply cannot be transmitted to the detection module 30 and the subsequent circuit, the power utilization safety of the circuit is guaranteed, and the user experience is improved.
In the embodiment, the docking station device access detection circuit is provided with the signal input module, the switch module and the detection module which are sequentially connected, and the switch module is also connected with the power supply module; the signal input module is used for inputting a control signal to the switch module when the docking station device is accessed; the power supply module is used for accessing a first power supply; the switch module is used for connecting a path between the power supply module and the detection module according to the control signal; the detection module is used for detecting the first power supply when the docking station equipment is connected, so that the docking station equipment is connected and detected, whether the docking station equipment is connected or not is detected through a control signal, the detection process is simple and quick, the occupied size is small, redundant hardware equipment is not needed, and the pin resource and the cost of the connector are saved.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a docking device access detection circuit according to a second embodiment of the present invention. Based on the first embodiment, the present invention provides a second embodiment of the docking device access detection circuit.
In the present embodiment, the switch module 20 includes: a first switch circuit 201, a second switch circuit 202, and a third switch circuit 203 connected in this order; the first switch circuit 201 is configured to close according to the control signal and transmit the control signal to the second switch circuit 202; the second switch circuit 202 is configured to close according to the control signal and transmit the control signal to the third switch circuit 203; the third switch circuit 203 is configured to close according to the control signal to connect a path between the power module 40 and the detection module 30.
It should be understood that the first switch circuit 201 is connected to the signal input module 10, when the signal input module 10 receives a control signal of a ground line of the docking device, the control signal is transmitted to the first switch circuit 201, when the first switch circuit 201 receives the control signal, the first switch circuit 201 is closed according to the control signal, and the control signal is transmitted to the second switch circuit 202, the second switch circuit 202 is closed according to the control signal, and the control signal is transmitted to the third switch circuit 203, the third switch circuit 203 is closed according to the control signal transmitted by the second control signal 202, the first switch circuit 201, the second switch circuit 202, and the third switch circuit 203 are all connected to the power module 40, when the third switch circuit 203 is closed, the first power of the power module 40 can be transmitted to the detection module 30 through the first switch circuit 201, the second switch circuit 202, and the third switch circuit 203, when the detection module 30 detects the first power, it indicates that there is a docking device accessing circuit at this time, and transmits the first power to the subsequent circuit for operation.
In a specific implementation, the first switch circuit 201 includes: the first MOS transistor Q1, the first resistor R1 and the second resistor R2; a gate of the first MOS transistor Q1 is connected to the signal input module 10, the first end of the first resistor R1, and the second end of the second resistor R2, respectively, a source of the first MOS transistor Q1 is grounded, and a drain of the first MOS transistor Q1 is connected to the power module 40 and the detection module 30, respectively; a second end of the first resistor R1 is grounded; a first end of the second resistor R2 is connected to the power module 40.
It should be understood that the gate of the first MOS transistor Q1 is connected to the signal input module 10, the first end of the first resistor R1, and the second end of the second resistor R2, respectively, the first MOS transistor Q1 is configured to receive the control signal transmitted by the signal input module 10, the source of the first MOS transistor Q1 is grounded, and the drain of the first MOS transistor Q1 is connected to the power module 40 and the detection module 30, respectively, when the ground line of the docking station device is connected, the signal input terminal is connected to the control signal 10 to the first MOS transistor Q1, the gate level of the first MOS transistor Q1 is pulled down to 0 potential, the first MOS transistor Q1 is turned on, the first power source connected to the power module 40 is transmitted to the detection module 30, and the first power source is detected. The first MOS transistor is an NMOS transistor, the first resistor R1 and the second resistor R2 are Voltage dividing resistors, the resistance values of the first resistor R1 and the second resistor R2 are determined according to the model of the first MOS transistor, and the resistance values of the first resistor R1 and the second resistor R2 are selected according to the VTH (Threshold Voltage) of the first MOS transistor Q1, so that when the ground line of the first MOS transistor Q1 docking station device is not connected to the circuit, the signal input module 10 does not transmit a control signal, the first MOS transistor Q1 is in a disconnected state, and does not transmit a first power supply to the detection module 30, the model of the first resistor R1 is 100KF02, and the model of the second resistor R2 is 750KF 02.
In this embodiment, the second switch circuit 202 includes: the second MOS transistor Q2, the third resistor R3 and the fourth resistor R4; a gate of the second MOS transistor Q2 is connected to the first switch circuit 201, the second end of the third resistor R3, and the first end of the fourth resistor R4, respectively, a source of the second MOS transistor Q2 is grounded, and a drain of the second MOS transistor Q2 is connected to the detection module 30; a first end of the third resistor R3 is connected to the power module 40; the second end of the fourth resistor R4 is grounded.
It should be noted that a gate of the second MOS transistor Q2 is connected to the second ends of the first switch circuit 201 and the third resistor R3 and the first end of the fourth resistor R4, a gate of the second MOS transistor Q2 is connected to a drain of the first MOS transistor Q1 in the first switch circuit 201, a source of the second MOS transistor Q2 is grounded, a drain of the second MOS transistor Q2 is connected to the detection module 30, a model of the third MOS transistor Q2 is WNM6001-3/TR, the third resistor R3 and the fourth resistor R4 are voltage dividing resistors, resistances of the third resistor R3 and the fourth resistor R4 are determined according to a model of the second MOS transistor Q2, and a threshold resistance of the third resistor R3 and the threshold of the fourth resistor R4 is selected to ensure that a voltage of the second MOS transistor Q2 at the time is greater than a VTH voltage, and a model of the third resistor R3 and the fourth resistor R4 is 750KF02 at the normal state.
In a specific implementation, when the first MOS transistor Q1 is turned on, the control signal is transmitted to the second MOS transistor Q2, the gate of the second MOS transistor Q2 is switched from a high level to a low level, and VGS of the second MOS transistor Q2 is 0V, then the second MOS transistor Q2 is turned on, and the path between the power module 40 and the detection module 30 is connected, and the detection module 30 detects the first power supply. Further, the second switch circuit 202 further includes: a first capacitance C1; a first end of the first capacitor C1 is connected to the second end of the third resistor R3, the first switch circuit 201, a first end of the fourth resistor R4, and the gate of the second MOS transistor Q2, respectively, and a second end of the first capacitor C1 is grounded.
A first end of the first capacitor C1 is connected to the second end of the third resistor R3, the first end of the fourth resistor R4, and the gate of the second MOS transistor Q2, the first capacitor C1 is further connected to the drain of the first MOS transistor Q1, and a second end of the second capacitor C2 is grounded. The first capacitor C1 is a bypass capacitor to prevent the gate voltage of the second MOS transistor Q2 from jittering and generating an error signal, and the capacitance of the first capacitor C1 is 0.1uF, and the voltage is 50V.
In this embodiment, the third switch circuit 203 includes: a third MOS transistor Q3, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and a second capacitor C2; a gate of the third MOS transistor Q3 is connected to the first end of the second capacitor C2 and the second end of the sixth resistor R6, respectively, a source of the third MOS transistor Q3 is connected to the second end of the second capacitor C2, the second end of the seventh resistor R7 and the power module 40, respectively, and a drain of the third MOS transistor Q3 is connected to the detection module 30; a first end of the fifth resistor R5 is connected to the second switch circuit 202, and a second end of the fifth resistor R5 is connected to a first end of the sixth resistor R6 and a first end of the seventh resistor R7, respectively.
Note that the third switch circuit 203 includes: a third MOS transistor Q3, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and a second capacitor C2. The gate of the third MOS transistor Q3 is connected to the first end of the second capacitor C2 and the second end of the sixth resistor R6, the first end of the fifth resistor R5 is connected to the drain of the second MOS transistor Q2 in the second switch circuit 202, the second end of the fifth resistor R5 is connected to the first end of the sixth resistor R6 and the first end of the seventh resistor R7, the second end of the seventh resistor R7 is connected to the power module 40, the second end of the second capacitor C2 is connected to the power module 40 and the sources of the third MOS transistor Q3, and the drain of the third MOS transistor Q3 is connected to the detection module 30. The third MOS transistor Q3 is a PMOS transistor with model number WPM 3033-B/TR. The fifth resistor R5, the sixth resistor R6 and the seventh resistor R7 are voltage dividing resistors, the fifth resistor R5, the sixth resistor R6 and the seventh resistor R7 provide voltage for the gate of the third MOS transistor Q3, the resistances of the fifth resistor R5, the sixth resistor R6 and the seventh resistor R7 are related to the model of the third MOS transistor Q3, and after the VTH voltage of the third MOS transistor Q3 is determined, the resistances of the fifth resistor R5, the sixth resistor R6 and the seventh resistor R7 can be selected. The second capacitor C2 is a coupling capacitor, and can synchronize the glitch between the gate and the source of the third MOS transistor Q3, and reduce the false touch signal, when the second MOS transistor Q2 is turned on, the fifth resistor R5 is grounded, and the gate voltage of the third MOS transistor Q3 is reduced, at this time, the VGS voltage of the third MOS transistor Q3 is less than the VTH voltage of the third MOS transistor Q3, the third MOS transistor Q3 is turned on, and the first power of the power module 40 is transmitted to the detection module 30.
In the embodiment, a first switch circuit, a second switch circuit and a third switch circuit which are connected in sequence are arranged in a switch module; the first switch circuit is used for being closed according to the control signal and transmitting the control signal to the second switch circuit; the second switch circuit is used for closing according to the control signal and transmitting the control signal to the third switch circuit; the third switch circuit is used for being closed according to the control signal, communicating a passage between the power module and the detection module, closing the first switch circuit, the second switch circuit and the third switch circuit through the control signal, and transmitting the first power supply of the power module to the detection module, so that the quick detection of docking station equipment access is realized, software adaptation is not needed, the occupied size is small, and chip resources and cost are saved.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a docking device access detection circuit according to a third embodiment of the present invention. Based on the first and second embodiments described above, the present invention proposes a third embodiment of an access detection circuit for a docking device.
In this embodiment, the signal input module 10 includes: a signal input terminal 101, wherein the signal input terminal 101 is connected to the switch module 20; the signal input terminal 101 is configured to access a control signal to the switch module 20 when the docking station device is accessed.
It should be understood that the signal input terminal 101 is used for receiving a control signal of a ground line of the docking station device, transmitting the control signal to the gate of the first MOS transistor Q1, pulling the gate level of the first MOS transistor Q1 down to 0 potential, so that the first MOS transistor Q1 is turned on, when the first MOS transistor Q1 is turned on, the gate of the second MOS transistor Q2 is changed from high level to low level, VGS is 0V, the second MOS transistor Q2 is turned on, the fifth resistor R5 is grounded, the gate voltage of the third MOS transistor Q3 is lowered, the third MOS transistor Q3 is turned on, and the power module 40 is communicated with the detection module 30.
In this embodiment, the power module 40 includes: a power input terminal VCC1_ IN, the power input terminal VCC1_ IN being connected to the switch module 20; the power input terminal VCC1_ IN is used for accessing a first power supply and supplying power to the switch module 20. The detection module 30 includes: a power supply detection terminal VCC1_ OUT, the power supply detection terminal VCC1_ OUT being connected to the switch module 20; the power supply detection terminal VCC1_ OUT is used for detecting the outputted first power supply when the docking station device is connected.
It should be noted that, the detecting module 30 includes a power detecting terminal VCC1_ OUT, when the docking station device is connected to the ground, the control signal is sequentially transmitted to the first MOS transistor Q1, the second MOS transistor Q2 and the third MOS transistor Q3, the path between the power module 40 and the detecting module 30 is connected, the first power may be transmitted to the power detecting terminal VCC1_ OUT, the power input terminal VCC1_ IN and the power detecting terminal VCC1_ OUT are connected, the ground of the docking station device is used to control the conduction of the docking station device connection detecting circuit, and the first power is transmitted to the subsequent circuit, so that the docking station device can normally connect and use the docking station device.
In the embodiment, a signal input end is arranged in a signal input module, and the signal input end is connected with the switch module; the signal input end is used for accessing a control signal to the switch module when the docking station equipment is accessed, accessing the control signal of the ground wire of the docking station equipment through the signal input end, transmitting the control signal to the switch module through the signal input end, and enabling the switch module to be communicated with the passage of the power supply module and the detection module through the control signal, so that the rapid detection of the docking station equipment access is realized.
In order to achieve the above object, the present invention also provides an apparatus. The device includes a docking device access detection circuit as described above. The specific structure of the docking device access detection circuit refers to the above embodiments, and since the device can adopt the technical solutions of all the above embodiments, the device at least has the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A docking device access detection circuit, comprising: the device comprises a signal input module, a switch module and a detection module which are sequentially connected, wherein the switch module is also connected with a power supply module;
the signal input module is used for inputting a control signal to the switch module when the docking station device is accessed;
the power supply module is used for accessing a first power supply;
the switch module is used for connecting a path between the power supply module and the detection module according to the control signal;
the detection module is used for detecting the first power supply when the docking station device is connected so as to realize the connection detection of the docking station device.
2. The docking device access detection circuit of claim 1, wherein the switch module comprises: the first switch circuit, the second switch circuit and the third switch circuit are connected in sequence;
the first switch circuit is used for closing according to the control signal and transmitting the control signal to the second switch circuit;
the second switch circuit is used for closing according to the control signal and transmitting the control signal to the third switch circuit;
and the third switch circuit is used for closing according to the control signal and communicating a passage between the power supply module and the detection module.
3. The docking device access detection circuit of claim 2, wherein the first switching circuit comprises: the circuit comprises a first MOS tube, a first resistor and a second resistor;
the grid electrode of the first MOS tube is respectively connected with the signal input module, the first end of the first resistor and the second end of the second resistor, the source electrode of the first MOS tube is grounded, and the drain electrode of the first MOS tube is respectively connected with the power supply module and the detection module;
the second end of the first resistor is grounded;
and the first end of the second resistor is connected with the power supply module.
4. The docking device access detection circuit of claim 2, wherein the second switching circuit comprises: the second MOS tube, the third resistor and the fourth resistor;
the grid electrode of the second MOS tube is respectively connected with the first switch circuit, the second end of the third resistor and the first end of the fourth resistor, the source electrode of the second MOS tube is grounded, and the drain electrode of the second MOS tube is connected with the detection module;
the first end of the third resistor is connected with the power supply module;
and the second end of the fourth resistor is grounded.
5. The docking device access detection circuit of claim 4, wherein the second switching circuit further comprises: a first capacitor;
the first end of the first capacitor is connected with the second end of the third resistor, the first switch circuit, the first end of the fourth resistor and the grid electrode of the second MOS transistor respectively, and the second end of the first capacitor is grounded.
6. The docking device access detection circuit of claim 2, wherein the third switching circuit comprises: the third MOS tube, a fifth resistor, a sixth resistor, a seventh resistor and a second capacitor;
a grid electrode of the third MOS transistor is connected with the first end of the second capacitor and the second end of the sixth resistor respectively, a source electrode of the third MOS transistor is connected with the second end of the second capacitor, the second end of the seventh resistor and the power module respectively, and a drain electrode of the third MOS transistor is connected with the detection module;
a first end of the fifth resistor is connected to the second switch circuit, and a second end of the fifth resistor is connected to the first end of the sixth resistor and the first end of the seventh resistor, respectively.
7. The docking device access detection circuit of any of claims 1-6, wherein the signal input module comprises: a signal input terminal connected with the switch module;
the signal input end is used for accessing a control signal to the switch module when the docking station device is accessed.
8. The docking device access detection circuit of any of claims 1 to 6, wherein the power module comprises: the power input end is connected with the switch module;
and the power supply input end is used for being connected with a first power supply and supplying power to the switch module.
9. The docking device access detection circuit of any of claims 1 to 6, wherein the detection module comprises: the power supply detection end is connected with the switch module;
the power supply detection end is used for detecting the output first power supply when the docking station device is connected.
10. A device comprising the docking device access detection circuit of any of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123318818.2U CN216817392U (en) | 2021-12-27 | 2021-12-27 | Docking station equipment access detection circuit and equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123318818.2U CN216817392U (en) | 2021-12-27 | 2021-12-27 | Docking station equipment access detection circuit and equipment |
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| CN216817392U true CN216817392U (en) | 2022-06-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116303186A (en) * | 2022-09-08 | 2023-06-23 | 深圳市湘凡科技有限公司 | Switching device suitable for two devices |
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2021
- 2021-12-27 CN CN202123318818.2U patent/CN216817392U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116303186A (en) * | 2022-09-08 | 2023-06-23 | 深圳市湘凡科技有限公司 | Switching device suitable for two devices |
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