CN108711719B - Joint and electronic equipment - Google Patents
Joint and electronic equipment Download PDFInfo
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- CN108711719B CN108711719B CN201810291036.8A CN201810291036A CN108711719B CN 108711719 B CN108711719 B CN 108711719B CN 201810291036 A CN201810291036 A CN 201810291036A CN 108711719 B CN108711719 B CN 108711719B
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- pin
- interface
- control
- electrically connected
- power supply
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
Abstract
The embodiment of the invention discloses a connector and electronic equipment, wherein the connector can be matched with an interface on the electronic equipment, and the connector comprises: the first connecting end is used for being electrically connected with a power supply; the second connecting end is used for being electrically connected with an interface of the electronic equipment; the first detection chip is located between the first connecting end and the second connecting end and used for controlling the disconnection of a path between the first connecting end and a power supply when the first connecting end is connected with the power supply and the parameter information of a preset pin of the second connecting end does not meet a first preset condition, so that the water stain detection can be realized no matter the connector is in a charging state or a power supply state, and the protection of the connector and electronic equipment electrically connected with the connector under two conditions of charging or power supply is realized.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a connector and electronic equipment.
Background
Along with the development of electronic technology, more and more functions are integrated into electronic equipment, great convenience is brought to work and life of people, and meanwhile, the electronic equipment also becomes an essential part of daily life of people.
However, as the electronic devices are integrated with more and more functions, the power consumption speed thereof is increased, so that the charging frequency of the electronic devices is increased. In daily life, the charger joint of the electronic equipment is difficult to avoid the phenomenon that the charger joint enters water by mistake or sweat is dripped into the charger joint, so that ions with corrosion function are remained in the joint, and when the joint is electrically connected with a power supply, higher voltage is loaded on a pin of the joint, so that the corrosion of the joint is accelerated, and the joint is damaged.
Disclosure of Invention
In order to solve the technical problem, an embodiment of the present invention provides a connector, so that when water stains exist in the connector, the connector is electrically disconnected from a power supply, and a phenomenon that the water stains in the connector accelerate the connector to be damaged is avoided.
In order to solve the above problems, the embodiments of the present invention provide the following technical solutions:
a connector mateable with an interface on an electronic device, the connector comprising:
the first connecting end is used for being electrically connected with a power supply;
the second connecting end is used for being electrically connected with an interface of the electronic equipment;
the first detection chip is located between the first connection end and the second connection end and used for controlling the disconnection of a path between the first connection end and the power supply when the first connection end is connected with the power supply and the parameter information of the preset pin of the second connection end does not meet a first preset condition.
Optionally, the parameter information of the predetermined pin is an impedance between a power pin and a ground pin of the second connection terminal or an impedance between a detection pin and a ground pin of the second connection terminal; or, the parameter information of the predetermined pin is a voltage difference between a power pin and a ground pin of the second connection terminal or a voltage difference between a detection pin and a ground pin of the second connection terminal.
Optionally, the first preset condition includes: and the parameter information of the preset pin of the second connecting end is a constant value, and the constant value is not zero.
Optionally, the first detection chip is further configured to determine that the predetermined pin is shorted when the parameter information of the predetermined pin is zero.
Optionally, the first detection chip is further configured to determine whether the parameter information of the predetermined pin of the second connection end meets the first preset condition when the second connection end is inserted into the interface of the electronic device, and control the disconnection of the path between the first connection end and the power supply when the parameter information of the predetermined pin of the second connection end does not meet the first preset condition.
Optionally, the second detection chip is further configured to determine the type of the electronic device based on the parameter information of the predetermined pin when the parameter information of the predetermined pin of the second connection end satisfies the first preset condition.
Optionally, the first detection chip includes: the control circuit comprises a current source, a first amplifier, a control device and a first control switch; the first end of the first control switch is electrically connected with the first connecting end, the second end of the first control switch is electrically connected with the second connecting end, and the control end of the first control switch is electrically connected with the control device; the current source is positioned between the first control switch and the second connecting end; the first input end of the first amplifier is electrically connected with the second connecting end, the second input end of the first amplifier inputs a first reference voltage, and the output end of the first amplifier is connected with the control device; the control device is used for controlling the first control switch to be switched on and off based on the output signal of the first amplifier.
Optionally, the control device includes: the control chip is used for generating a control instruction based on an output signal of the first amplifier; the control circuit is used for responding to the control instruction and controlling the first control switch to be switched on and switched off.
An electronic device, comprising:
the interface is connected with external equipment, the first end of the interface is electrically connected with the detection power supply through a second resistor, and the second end of the interface is grounded;
the second detection chip is used for controlling the voltage of the first end of the interface not to be larger than a preset voltage when the interface is not inserted into external equipment, and the preset voltage is smaller than the power supply voltage of the detection power supply.
Optionally, the second detection chip includes:
a first input end of the second amplifier is electrically connected with the first end of the interface, and a second reference voltage is input to a second input end of the second amplifier;
and the first end of the second control switch is electrically connected with the first end of the interface, the second end of the second control switch is grounded through a third resistor, and the control end of the second control switch is electrically connected with the output end of the second amplifier.
Compared with the prior art, the technical scheme has the following advantages:
according to the technical scheme provided by the embodiment of the invention, when the first connecting end is connected with the power supply, whether the path between the first connecting end and the power supply is disconnected or not is determined and controlled by judging whether the parameter information of the preset pin of the second connecting end meets a first preset condition or not, so that the water stain detection can be realized no matter the connector is in a charging state or a power supply state, and the protection of the connector and electronic equipment electrically connected with the connector under the two conditions of charging or power supply is realized.
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 drawings without creative efforts.
FIG. 1 is a schematic structural view of a joint according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first detection chip in a joint according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a first detecting chip in a joint according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of a connector according to an embodiment of the present invention inserted into an electronic device;
fig. 5 is a schematic structural diagram of a part of a circuit in an electronic device according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a level signal at a detection pin when an interface of an electronic device is not plugged into an external device in the prior art.
Detailed Description
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.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As described in the background section, in daily life, a charger connector of an electronic device is difficult to avoid the occurrence of phenomena such as mistaken entry into water or dropping of sweat, which causes the existence of residual ions having a corrosion function in the connector, and accelerates the damage of the connector when the connector is electrically connected with a power supply.
In view of this, embodiments of the present invention provide a connector, where the connector can be matched with an interface on an electronic device to implement functions of charging the electronic device, and the like. Specifically, in the embodiment of the present invention, as shown in fig. 1, the joint includes:
the first connecting end 10, the first connecting end 10 is used for electrically connecting with a power supply;
a second connection terminal 20, wherein the second connection terminal 20 is used for electrically connecting with an interface of an electronic device;
the first detection chip 30 is located between the first connection end 10 and the second connection end 20, and is configured to control a path between the first connection end 10 and the power supply to be disconnected when the first connection end 10 is connected with the power supply and parameter information of a predetermined pin of the second connection end 20 does not meet a first preset condition.
It should be noted that, for convenience of description, the first detection chip 30 is disposed at a data line position between the first connection end 10 and the second connection end 20 in fig. 1, but the present invention is not limited thereto, and in other embodiments of the present invention, the first detection chip 30 may be integrated at the first connection end 10, or integrated at the second connection end 20, or disposed at other positions, as the case may be.
It should be further noted that, in the embodiment of the present invention, the first connection terminal 10 and the second connection terminal 20 may be electrically connected through a data line (as shown in fig. 1), or may be electrically connected directly, which is not limited in the present invention, as the case may be.
Since the parameter information of the predetermined pin of the second connection terminal 20 changes when the joint has water stain (for example, the joint enters water by mistake or sweat drops), the joint provided in the embodiment of the present invention can determine whether the water stain exists in the joint by determining whether the parameter information of the predetermined pin of the second connection terminal 20 satisfies the first preset condition, and control the disconnection of the path between the first connection terminal 10 and the power supply when the parameter information of the predetermined pin of the second connection terminal 20 does not satisfy the first preset condition (that is, when the water stain exists in the joint), so as to avoid the damage to the joint caused by the direct loading of a higher voltage on the pin of the joint.
On the basis of the above embodiment, in an embodiment of the present invention, the parameter information of the predetermined pin is an impedance value between the power pin and the ground pin of the second connection terminal 20; in another embodiment of the present invention, the parameter information of the predetermined pin is an impedance value between the detection pin and the ground pin of the second connection terminal 20. The present invention is not limited in this regard, as the case may be.
It should be noted that, since the impedance value between the power pin and the ground pin or the impedance value between the detection pin and the ground pin is not easy to directly obtain, in an optional embodiment of the present invention, the parameter information of the predetermined pin is a voltage difference between the power pin and the ground pin of the second connection terminal 20 or a voltage difference between the detection pin and the ground pin of the second connection terminal 20, which is not limited in the present invention, and is determined as the case may be.
On the basis of any one of the above embodiments, in an embodiment of the present invention, the first preset condition includes: and the parameter information of the preset pin of the second connecting end is a constant value, and the constant value is not zero. Specifically, when no water stain enters the pin of the connector, the power pin (or the detection pin) of the second connection terminal 20 is disconnected from the ground pin, and the impedance value of the predetermined pin is in the mega ohm order and is a stable value; when water stain enters the pins of the connector, the power supply pin (or the detection pin) of the second connecting end 20 is electrically connected with the ground pin equivalently through a resistor, the impedance value of the preset pin is in the kiloohm magnitude, and the impedance value is unstable. Therefore, the connector provided by the embodiment of the invention can determine whether water stains exist in the connector by judging whether the parameter information of the preset pin is a constant value or not, and whether the constant value is zero or not.
On the basis of any of the above embodiments, in an embodiment of the present invention, the first detecting chip 30 is further configured to determine that the predetermined pin is shorted when the parameter information of the predetermined pin is zero.
In addition to any of the above embodiments, in an embodiment of the present invention, taking parameter information of the predetermined pin as an example of a voltage difference between the power pin (or the detection pin) and a ground pin, as shown in fig. 2, the first detection chip 30 includes: the current source I, the first amplifier A1, the control device 31 and the first control switch M1, wherein the first end of the first control switch M1 is electrically connected to the first connection terminal 10, the first connection terminal 10 is electrically connected to the power supply V1, the second end is electrically connected to the second connection terminal 20, the second connection terminal 20 is connected to the output pin Vout of the connector, and the control terminal is electrically connected to the control device 31; the output pin Vout is matched with an interface on the electronic equipment and is represented by a first resistor R1; a first input terminal Vin1 of the first amplifier a1 is electrically connected to the output pin Vout, a second input terminal Vref1 inputs a first reference voltage, and an output terminal is connected to the control device 31; the control device 31 is used for controlling the first control switch M1 to be turned on and off based on the output signal of the first amplifier A1.
On the basis of the above embodiment, in one embodiment of the present invention, the first detection chip automatically detects whether water stains exist in the joint, and in another embodiment of the present invention, the first detection chip periodically detects whether water stains exist in the joint under the departure of an external instruction.
Specifically, in an embodiment of the present invention, when the first detection chip receives an external command, the first control switch M1 is controlled to be turned off, when there is no water stain in the connector, the resistance of the first resistor R1 is infinite, the voltage of the first input terminal Vin1 of the first amplifier a1 is the supply voltage of the current source I, which is greater than the first reference voltage Vref1, the first amplifier a1 outputs a first control signal, and the control device 31 controls the first control switch M1 to be turned on; when water stain exists in the connector, the first resistor R1 is hundreds of K Ω, the voltage of the second connection terminal decreases to be equal to I × R1, at this time, the parameter information of the predetermined pin (i.e., the voltage of the first input terminal of the first amplifier) is not greater than the first reference voltage, the first amplifier a1 outputs a second control signal, and the control device 31 controls the first control switch M1 to be turned off, so as to disconnect the path between the first connection terminal and the second connection terminal.
In addition to the above embodiments, in an embodiment of the present invention, in order to reduce the power consumption of the first detection chip, the current magnitude of the current source I is about 0.1 μ a, but the present invention is not limited thereto, as the case may be.
It should be noted that, in the embodiment of the present invention, the value of the first reference voltage is determined based on the resistance value or the voltage value at the predetermined pin of the contact when the contact is located in the corrosive liquid with different concentrations, which is not limited in the present invention.
On the basis of the above-described embodiment, in one embodiment of the present invention, as shown in fig. 3, the control device 31 includes: a control chip 311 and a control circuit 312, wherein the control chip 311 is configured to generate a control instruction based on an output signal of the first amplifier a 1; the control circuit 312 controls the first control switch M1 to be turned on and off based on the control command. However, the present invention is not limited thereto, as the case may be.
In daily life, the electronic equipment is difficult to avoid the phenomenon that sweat is dripped into water by mistake or the interface of the electronic equipment, and the like, so that the interface of the electronic equipment has ion residues with corrosion functions. At this time, if the interface of the electronic device is inserted into the connector, a higher voltage may be applied to the pin located in the interface of the electronic device, which accelerates corrosion of the interface of the electronic device, resulting in rapid damage to the interface of the electronic device. Optionally, the interface of the electronic device is a Type C interface, but the present invention is not limited thereto, as the case may be.
When the second connection end of the connector is inserted into the interface of the electronic device, each pin in the second connection end is electrically connected with a pin in the interface of the electronic device, so that the connector provided by the embodiment of the invention is inserted into the interface of the electronic device on the premise of determining that no water stain exists in the connector, and whether the water stain exists in the interface of the electronic device can be determined by judging whether the parameter information of the preset pin of the second connection end meets a first preset condition.
Therefore, on the basis of any of the above embodiments, in an embodiment of the present invention, as shown in fig. 4, when there is no water stain in the connector, the first detection chip is further configured to determine whether the parameter information of the predetermined pin of the second connection terminal 20 meets the first preset condition when the second connection terminal 20 is plugged into the interface of the electronic device 40, and when the parameter information of the predetermined pin of the second connection terminal 20 does not meet the first preset condition, control the disconnection of the path between the first connection terminal 10 and the power supply (not shown in the figure) so as to prevent the second connection terminal 20 from being electrically connected to the interface of the electronic device 40 on the premise that there is water stain in the interface of the electronic device 40, thereby accelerating the rapid damage of the interface of the electronic device 40 and the connector.
On the basis of the above embodiment, in an embodiment of the present invention, when there is no water stain in the connector, the first detection chip is further configured to determine whether parameter information of a predetermined pin of the second connection terminal 20 is zero or not when the second connection terminal 20 is inserted into an interface of an electronic device 40, and determine whether a short circuit phenomenon exists at the interface of the electronic device 40.
On the basis of the above embodiment, in an embodiment of the present invention, when there is no water stain in the connector, the first detection chip is further configured to determine the type of the electronic device based on the parameter information of the predetermined pin of the second connection terminal 20 when the parameter information of the predetermined pin satisfies the first preset condition.
Specifically, in an embodiment of the present invention, when the impedance value between the power pin (or the detection pin) and the ground pin of the second connection terminal is in the kiloohm level and is a stable value, it is determined that the electronic device is a USB Sink, such as a chargeable electronic device like a mobile phone; when the impedance value between the power pin (or the detection pin) and the ground pin of the second connection terminal is in the hundred ohm level and is a stable value, it is determined that the electronic device is an Audio USB device, such as an electronic device with an Audio interface, such as an earphone.
Therefore, the connector provided by the embodiment of the invention can be used for detecting whether water stains exist at the pin of the connector, so that the phenomenon that the connector is corroded at an accelerated speed due to the residual water stains is avoided, and the probability of damage of the connector is reduced. Moreover, the connector provided by the embodiment of the invention can judge whether water stain exists in an interface inserted into the electronic equipment on the premise that the connector does not have the water stain, and when the interface of the electronic equipment has the water stain, the power supply of the electronic equipment is disconnected from the power supply end, so that pins of the connector and the interface of the electronic equipment are completely uncharged, the corrosion of the connector and the interface under the condition that the water stain is remained during the acceleration of charging is avoided, meanwhile, the space for placing a humidity detection chip in the electronic equipment is saved, and the design pressure of the electronic equipment is relieved.
In summary, when the first connection end is connected to the power supply, the connector provided in the embodiment of the present invention determines whether to control the path between the first connection end and the power supply to be disconnected by determining whether the parameter information of the predetermined pin of the second connection end satisfies the first preset condition, so that the connector can achieve water stain detection no matter in a charging state or a power supply state, and thus protect the connector and the electronic device electrically connected thereto under two conditions of charging or power supply.
In addition, an embodiment of the present invention further provides an electronic device, as shown in fig. 5, where the electronic device includes:
the interface 60 is connected with external equipment, a first end of the interface 60 is electrically connected with the detection power supply V2 through a second resistor R2, and a second end of the interface 60 is grounded;
the second detects chip 50, the second detects chip 50 be used for when interface 60 does not insert external equipment, control the voltage of the first end of interface is not more than preset voltage, preset voltage is less than detect power V2's supply voltage, thereby when electronic equipment's interface 60 internal existence water stain, slow down the water stain is right electronic equipment's interface 60's corrosion rate.
The Type C interface which is popular now, because of its special detection mechanism, two detection pins (CC1 and CC2) of the electronic device always have a square wave signal as shown in fig. 6 without USB device insertion, and the supply voltage of the detection power supply is about 4V, which causes rapid corrosion of the detection pins. The inventor studies and finds that different levels of water have different corrosion effects on the interface of the electronic device, as shown in the following table.
As can be seen from the above table, as the voltage of the detection power supply V2 increases, the ion concentration in the water stain increases, the corrosion rate of the water stain on the interface 60 of the electronic device is faster, and when the voltage of the detection power supply V2 is about 4V, the voltage range where the corrosion is faster belongs to, therefore, in the electronic device provided in the embodiment of the present invention, when the interface 60 is not plugged into an external device, the voltage of the first end of the interface 60 is controlled not to be greater than a preset voltage, and the preset voltage is smaller than the voltage of the detection power supply V2, so as to slow down the corrosion rate of the water stain in the interface 60 on the interface 60 of the electronic device.
As can be further seen from the above table, when the voltage of the detection power source V2 is 1V, the interface 60 of the electronic device is within a safe voltage range even if located in strong brine, that is, the corrosion of the interface 60 by water stains in the interface 60 is almost zero, so on the basis of the above embodiment, in an embodiment of the present invention, the preset voltage is not greater than 1.5V, and optionally, the preset voltage is not greater than 1V.
On the basis of the above embodiment, in an embodiment of the present invention, as shown in fig. 5, the second detection chip 50 includes:
a second amplifier A2, wherein the first input terminal Vin2 of the second amplifier A2 is electrically connected to the first terminal of the interface 60 of the electronic device, and the second input terminal Vref2 inputs a second reference voltage;
and a second control switch M2, wherein a first end of the second control switch M2 is electrically connected to the first end of the interface 60, a second end is grounded through a third resistor R3, and a control end is electrically connected to the output end of the second amplifier A2.
When the interface 60 of the electronic device is not plugged into an external device, the voltage of the first input end of the second amplifier a2 is greater than the second reference voltage, the second amplifier a2 outputs a third control signal to control the second control switch M2 to be turned on, the voltage of the first end of the interface 60 is less than a preset voltage, and the corrosion rate of water stains on the interface is reduced when the interface 60 contains water stains; when the interface 60 of the electronic device is plugged into an external device, the voltage of the first input terminal of the second amplifier a2 is smaller than the second reference voltage, the second amplifier a2 outputs a fourth control signal to control the second control switch M2 to be turned off, and the detection power supply supplies power to the external device connected to the interface 60 through the interface 60.
Next, the electronic device provided in the embodiment of the present invention is described by taking the power supply voltage of the detection power supply as 4V as an example.
According to the specification of the Type C protocol, the resistance R2 of the second resistor (i.e., the detection resistor) is 10k/22k/56k, and the resistance Rd of the external device 40 is less than or equal to 5.1 k. The resistance value of 1/4 is 2.0k, comparable to 5.1k for Rd, calculated with the 10k resistor having the smallest resistance value of the second resistor. It can be seen that when an external device (e.g., a USB device) is inserted, a resistance value of 5.1k or less can be correctly distinguished.
Therefore, on the basis of the above embodiment, in an embodiment of the present invention, the resistance value of the third resistor is 1/4 of the resistance value of the second resistor, but the present invention is not limited thereto, as the case may be.
Optionally, on the basis of the above embodiment, in an embodiment of the present invention, the external device is a storage device such as a usb disk, and the electronic device supplies power to the external device through an interface of the electronic device. In other embodiments of the present invention, the external device may also be a charging device, that is, the external device charges the electronic device through an interface of the electronic device.
Optionally, work as external equipment is battery charging outfit, promptly external equipment passes through electronic equipment's interface gives when electronic equipment charges, battery charging outfit includes power supply and electricity and connects power supply with electronic equipment's joint, connect the joint that provides for any above-mentioned embodiment, thereby utilize the joint is in when there is water stain in electronic equipment's the interface, the disconnection detect power supply with the electricity between the joint is connected, avoids in the electronic equipment charging process, water stain is right the corruption of electronic equipment interface.
According to the electronic equipment provided by the embodiment of the invention, when external equipment is not inserted, the voltage of the interface of the electronic equipment is controlled below the preset voltage through the second detection chip, so that the corrosion rate of water stains to the interface is reduced when the interface has the water stains, and the probability of damage of the electronic equipment is reduced.
The interface of the electronic equipment provided by the embodiment of the invention is prevented from corrosion, the condition that the interface of the electronic equipment is always at 5V voltage is changed at the electronic equipment end, and the electronic equipment is prevented from falling into water or other liquid with certain concentration to be quickly corroded. The connector that this interface corresponds has been improved simultaneously, lets this joint can confirm its environment of place, and the problem that the interface corrodes is solved more effectively to both cooperations, has also solved simultaneously and has connect self corroded problem. If the connector is not modified, the other end of the connector can also corrode the connector quickly and itself if the connector is plugged into the connector with the power source connected (i.e., the connector receives a voltage input of 5V from the outside).
In the description, each part is described in a progressive manner, each part is emphasized to be different from other parts, and the same and similar parts among the parts are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A connector, wherein the connector is capable of mating with an interface on an electronic device, the connector comprising:
the first connecting end is used for being electrically connected with a power supply;
the second connecting end is used for being electrically connected with an interface of the electronic equipment;
the first detection chip is positioned between the first connecting end and the second connecting end and used for controlling the disconnection of a path between the first connecting end and the power supply when the first connecting end is connected with the power supply and the parameter information of a preset pin of the second connecting end does not meet a first preset condition;
wherein the first preset condition comprises: and the parameter information of the preset pin of the second connecting end is a constant value, and the constant value is not zero.
2. The connector according to claim 1, wherein the parameter information of the predetermined pin is an impedance between a power pin and a ground pin of the second connection terminal or an impedance between a detection pin and a ground pin of the second connection terminal; or, the parameter information of the predetermined pin is a voltage difference between a power pin and a ground pin of the second connection terminal or a voltage difference between a detection pin and a ground pin of the second connection terminal.
3. The connector according to claim 1, wherein the first detecting chip is further configured to determine that the predetermined pin is shorted when the parameter information of the predetermined pin is zero.
4. The connector according to claim 1, wherein the first detection chip is further configured to determine whether the parameter information of the predetermined pin of the second connection end satisfies the first preset condition when the second connection end is plugged into the interface of the electronic device, and control the disconnection of the path between the first connection end and the power supply when the parameter information of the predetermined pin of the second connection end does not satisfy the first preset condition.
5. The connector according to claim 4, wherein the first detection chip is further configured to determine the type of the electronic device based on parameter information of a predetermined pin of the second connection terminal when the parameter information of the predetermined pin satisfies the first preset condition.
6. The joint of any one of claims 1 to 5, wherein the first detection chip comprises: the control circuit comprises a current source, a first amplifier, a control device and a first control switch; the first end of the first control switch is electrically connected with the first connecting end, the second end of the first control switch is electrically connected with the second connecting end, and the control end of the first control switch is electrically connected with the control device; the current source is positioned between the first control switch and the second connecting end; the first input end of the first amplifier is electrically connected with the second connecting end, the second input end of the first amplifier inputs a first reference voltage, and the output end of the first amplifier is connected with the control device; the control device is used for controlling the first control switch to be switched on and off based on the output signal of the first amplifier.
7. A joint according to claim 6, wherein the control means comprises: the control chip is used for generating a control instruction based on an output signal of the first amplifier; the control circuit is used for responding to the control instruction and controlling the first control switch to be switched on and switched off.
8. An electronic device, comprising:
the interface is connected with external equipment, the first end of the interface is electrically connected with the detection power supply through a second resistor, and the second end of the interface is grounded;
the second detection chip is used for controlling the voltage of the first end of the interface not to be larger than a preset voltage when the interface is not inserted into external equipment, and the preset voltage is smaller than the power supply voltage of the detection power supply;
the second detection chip includes:
a first input end of the second amplifier is electrically connected with the first end of the interface, and a second reference voltage is input to a second input end of the second amplifier;
and the first end of the second control switch is electrically connected with the first end of the interface, the second end of the second control switch is grounded through a third resistor, and the control end of the second control switch is electrically connected with the output end of the second amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291036.8A CN108711719B (en) | 2018-03-30 | 2018-03-30 | Joint and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291036.8A CN108711719B (en) | 2018-03-30 | 2018-03-30 | Joint and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108711719A CN108711719A (en) | 2018-10-26 |
| CN108711719B true CN108711719B (en) | 2020-08-25 |
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