CN115684667A

CN115684667A - Case and electronic equipment

Info

Publication number: CN115684667A
Application number: CN202211333629.9A
Authority: CN
Inventors: 李志文; 王康斌; 侯俊; 刘杰; 罗睿韬; 吴加伍; 喻政
Original assignee: Hunan Xingtian Electronic Technology Co ltd
Current assignee: Hunan Xingtian Electronic Technology Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-02-03

Abstract

The embodiment of the invention discloses a case and electronic equipment, wherein the case comprises an environment detection circuit, and the environment detection circuit comprises a water immersion detection circuit, a first lead detection end, a second lead detection end and a central controller; the water immersion detection circuit is respectively connected with the first lead detection end and the second lead detection end, a preset distance is reserved between the first lead detection end and the second lead detection end, and the water immersion detection circuit is connected with the central controller; the water immersion detection circuit is used for generating an identification signal according to an external environment, and the identification signal is transmitted to the central controller; the central controller is used for judging whether the case is soaked through the identification signal. By simply arranging the two detection ends, the case can detect whether the case is soaked, and the detection of the environment where the case is located is ensured.

Description

Case and electronic equipment

Technical Field

The invention relates to the field of chassis or equipment protection, in particular to a chassis and electronic equipment.

Background

Electronic equipment is inside accurate, because elements such as external environment change suffer destruction easily, consequently need detect the environment of collapsing, the detection discovery of environment can be endangered the back together, can be through for example forcing the outage in order to avoid the electric leakage short circuit, or carry out modes such as data transfer, guarantee the safety of equipment, or can control master control equipment and open corresponding operation, realize corresponding counter-measure, and traditional quick-witted case or not have corresponding environment detection means, or the environment detection means that corresponds is with high costs, the design is complicated and circuit consumption is big, must not pay attention to usually.

Disclosure of Invention

In a first aspect, the present application provides a chassis, including an environment detection circuit, where the environment detection circuit includes a water immersion detection circuit, a first wire detection end, a second wire detection end, and a central controller;

the water immersion detection circuit is respectively connected with the first lead detection end and the second lead detection end, a preset distance is reserved between the first lead detection end and the second lead detection end, and the water immersion detection circuit is connected with the central controller;

the water immersion detection circuit is used for generating an identification signal according to an external environment and transmitting the identification signal to the central controller;

the central controller is used for judging whether the case is soaked through the identification signal.

Further, the water logging detection circuit includes: the detection circuit comprises a triode, a first resistor, a second resistor, a first detection lead and a second detection lead;

the emitting electrode of the triode is connected with the first resistor, the collecting electrode of the triode is connected with the first detection lead, and the base electrode of the triode is connected with the second detection lead;

the first detection lead is connected with the detection end of the first lead, and the second detection lead is connected with the detection end of the second lead;

the second resistor is connected with the base electrode of the triode and is connected with the detection end of the second lead in parallel;

and the emitter of the triode is connected with the central controller and is used for transmitting the identification signal to the central controller.

Further, the environment detection circuit further comprises at least one external interrupt circuit;

the external interrupt circuit comprises a third resistor and a detection capacitor, the third resistor is connected with the detection capacitor, the middle of the detection capacitor and the third resistor is connected with the central controller through a signal line, and the external interrupt circuit is used for detecting whether the case shell is destroyed.

Further, the at least one external interrupt circuit includes a first external interrupt circuit and a second external interrupt circuit;

the first external interrupt circuit and the second external interrupt circuit are oppositely arranged at two ends of the case and used for detecting whether the case is destroyed at a corresponding position.

Furthermore, the first lead detection end and the second lead detection end are both arranged in the middle of the case.

Further, the preset distance is between 0.5 cm and 1.5 cm.

Further, the chassis further includes: an interface circuit;

the central controller is connected with the interface circuit through an integrated circuit bus, and the interface circuit is used for being connected with a main control device;

and when the central controller judges that the case is immersed in water, sending a message to the main control equipment to start a protection program, and deleting the key data stored in the main control equipment or informing the main control equipment of power failure.

Furthermore, the case also comprises a power supply switching circuit, a battery panel and a battery voltage acquisition circuit;

the power supply switching circuit is connected with the battery panel, the battery panel is connected with the battery voltage acquisition circuit, the battery panel is used for supplying power to the environment detection circuit, the power supply switching circuit is used for switching an external power supply and an internal power supply, and the battery voltage acquisition circuit is used for acquiring the current working voltage.

Further, the power supply switching circuit comprises a pmos tube and a control chip;

the grid electrode of the pmos tube is connected with an external power supply through the control chip, the drain electrode of the pmos tube is connected with the central controller, and the source electrode of the pmos tube is connected with the battery panel;

and the control chip controls the level of the gate of the pmos transistor according to the voltage of the external power supply so as to control the switching between the external power supply and the battery panel.

In a second aspect, the present application further provides an electronic device, which includes a main control device and the chassis.

The embodiment of the invention discloses a machine case, which comprises an environment detection circuit, wherein the environment detection circuit comprises a water immersion detection circuit, a first lead detection end, a second lead detection end and a central controller; the water immersion detection circuit is respectively connected with the first lead detection end and the second lead detection end, a preset distance is reserved between the first lead detection end and the second lead detection end, and the water immersion detection circuit is connected with the central controller; the water immersion detection circuit is used for generating an identification signal according to an external environment, and the identification signal is transmitted to the central controller; and the central controller is used for judging whether the case is soaked by water or not according to the identification signal. Through simply setting up two detection terminals for whether quick-witted case can detect and has soaked, ensure the detection to the environment that quick-witted case is located, overall structure is simple, has saved the cost.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention. Like components are numbered similarly in the various figures.

FIG. 1 is a schematic diagram of a structure of a chassis according to an embodiment of the present application;

FIG. 2 is a schematic diagram illustrating an environment detection circuit according to an embodiment of the present application;

FIG. 3 illustrates a schematic diagram of a water flood detection circuit according to an embodiment of the present application;

FIG. 4 is a schematic diagram of another embodiment of a water flood detection circuit;

FIG. 5 is a schematic diagram of an external interrupt detection circuit according to an embodiment of the present application;

FIG. 6 is a schematic diagram of an environment detection circuit according to an embodiment of the present application;

fig. 7 shows a schematic diagram of a power supply switching circuit according to an embodiment of the present application.

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.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Hereinafter, the terms "including", "having", and their derivatives, which may be used in various embodiments of the present invention, are intended to indicate only specific features, numerals, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the presence of or adding to one or more other features, numerals, steps, operations, elements, components, or combinations of the foregoing.

Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.

As shown in fig. 1, the technical solution of the present application is applied to a chassis 100, which is used as a shell of an internal main control device to protect the main control device, and further includes an environment detection circuit 200, where the environment detection circuit 200 extends out of the chassis to form two detection ends 210 for detecting whether the chassis is immersed in water.

Specifically, this machine case 100 can be the same machine case shell like computer machine case for carry on main control device's mainboard and various electronic components, can understand that, this kind of main control device is when the circular telegram operation, if soaked, can cause secondary losses such as short circuit, thereby makes whole equipment all destroyed, and the environment detection circuitry of this embodiment can detect whether soaked by the water, in order before the machine case is damaged by water, carries out the suggestion to main control device, so that main control device can carry out measures such as outage, emergency storage.

The technical solution of the present application will be described with specific examples.

As shown in fig. 2, which is a schematic diagram of the environment detection circuit structure of the present application, the environment detection circuit 200 includes: a central controller 220, a water immersion detecting circuit 230, a first conductive line detecting terminal 211 and a second conductive line detecting terminal 212.

The central controller 220 may be a single chip, the water immersion detecting circuit 230 is connected to the central controller 220, the central controller 220 has a certain processing capability, a detection pin connected to the water immersion detecting circuit may be set to detect whether the chassis is immersed in water, and a level change of the detection pin is used as an identification signal, so that the central controller 220 may determine whether the chassis is immersed in water.

Specifically, when the level of the detection pin changes, it is determined that the cabinet is immersed in water. Specifically, in a normal case, if the detection pins of the central controller 220 are all at a high level, it is determined that the chassis is not immersed in water and is in a normal state, and if the level of the detection pins is changed to a low level, it indicates that the chassis is immersed in water.

The first wire detection end 211 and the second wire detection end 212 are located outside the chassis, and a certain preset distance is formed between the detection ends, so that a channel is prevented from being formed by connection between the two detection ends. It will be appreciated that the sensing terminals exposed on the exterior of the housing may be metal bumps formed by screws or nuts, on the interior of the housing, and connected to the leads extending from the water immersion sensing circuit 230. According to different external environments, the communication state between the first wire detection end 211 and the second wire detection end 212 changes, so that whether the case is immersed in water or not is detected.

Fig. 3 is a schematic diagram of a water immersion detection circuit.

The first resistor R1 is a pull-up resistor, and when the chassis is in the air, the space between the first wire detecting terminal 211 and the second wire detecting terminal 212 is the air, so that the chassis is open-circuited, and the voltage at the point a is high, so that the central controller 220 can determine that the chassis is not immersed because the detecting pin is high. Where R1 may be a high value resistance, such as a resistance of 1m ohms.

If water exists between the first wire detecting terminal 211 and the second wire detecting terminal 212, and the resistance of water is much smaller than that of air, a loop is generated, the voltage at the point a is smaller than that of air, and the level detected by the detecting pin of the central controller 220 becomes lower and lower, so that it can be determined that the chassis is immersed in water.

It will be appreciated that if the incoming water is water with electrolytes, such as saline water, the voltage drop at point a will be significant, whereas if the water is pure water, it will not conduct electricity easily, and in some scenarios the voltage at point a will not drop to a low level, and it will not be determined to the central controller that the enclosure is flooded.

Therefore, the present application further provides a water immersion detection circuit, as shown in fig. 4.

The emitter of the triode Q1 is connected with the first resistor R1, meanwhile, the point a of the emitter is also connected with the central controller 220, the collector is connected with the first wire detection end 211 through the first detection wire, and the base is connected with the second wire detection end through the second detection wire.

The second resistor R2 is connected with the base electrode of the triode Q1, and meanwhile the second resistor R2 is connected with the second lead detection end in parallel.

It can be understood that the transistor Q1 is a PNP transistor, because the emitter of the transistor Q1 is connected to the central controller 220, so that the central controller reads the voltage of the emitter, and when the cabinet is not immersed in water, the emitter of the transistor Q1 is at a high level, and the base is also at a high level, so that no level jump is generated. When the cabinet enters water, water is filled between the first wire detection end 211 and the second wire detection end 212, the second resistor R2 divides the voltage between the first wire detection end 211 and the second wire detection end 212, the larger R2, the larger the divided voltage, and the equivalent resistance of water is far smaller than that of air, so that the level of the base electrode is pulled down, and meanwhile, because of the amplification effect of the triode, the voltage of the emitter of the triode Q1 is reduced to a larger voltage, so that even if the cabinet is immersed by pure water, the voltage at the point a can be small enough, and the cabinet can be judged to be at a low level by the central controller 220.

The resistance of the second resistor R2 can be determined according to actual conditions, so that the equivalent resistance of air is about 30000M ohms, and the equivalent resistance of pure water is about 500k, so that the resistance of R2 is selected to be far greater than that of pure water in this interval, for example, 10M ohms.

As can be known by combining the figures 3 and 4, the immersion detection circuit is simple in structure, at most, two resistors and one PNP triode are needed, the rest resistors are connected through the conducting wire, the cost is low, certain stability and accuracy are achieved, immersion detection of different water qualities can be achieved, and correct identification signals can be transmitted to the central controller.

It can be understood that the first lead detection end and the second lead detection end can be arranged at the center of the case, so that the case can not be subjected to the immersion judgment only under the unexpected conditions of low water level and the like, and can not be subjected to the immersion judgment only after the case is completely immersed, and meanwhile, the two detection ends cannot be too far away or too close to each other and can be arranged between 0.5 cm and 1.5 cm, so that the case can not be triggered when the case is not immersed due to too close to each other, and cannot be triggered when the case is immersed due to too far.

In addition, except that detecting to soak, the quick-witted case of this application still includes a plurality of outside detection circuitry that interrupts, and this circuit is used for detecting whether quick-witted case is disassembled by violence.

The external interrupt circuit of the application is shown in fig. 5 and comprises a third resistor R3 and a detection capacitor C2, wherein the detection capacitor C2 is connected with the middle of the third resistor R3 through a signal line and the central controller, and the external interrupt circuit is used for detecting whether a case shell is dismantled or not. Specifically, the external interrupt circuit can be arranged at the joint of the cover plate of the case, when the case is completely closed, the circuit is normally connected, and when violent disassembly occurs, the circuit is disconnected to form a short circuit, so that a signal is sent to the central controller through a signal line.

Specifically, the monitoring device can comprise at least two external interrupt circuits, wherein the two external interrupt circuits can be respectively arranged on two sides of the case and used for judging whether the two positions are destructed, if the two positions are destructed, the voltage sent to the central controller can be changed, and then the central controller is prompted, and the case is in danger of being destroyed by violence.

It can be understood that, when the above-mentioned demolition or water-immersion condition occurs in the case, the electronic device may be considered to be facing violent destruction, and therefore, as shown in fig. 6, the environment detection circuit of the present application further includes an interface circuit 240, where the interface circuit 240 is configured to be connected to a main control device in the electronic device, and when the central controller 220 determines that any one of the above-mentioned conditions is reached, a message is sent to the main control device to tell that the main control device is currently in a state of water immersion or demolition, and if the main control device has a corresponding operation scenario, for example, a forced power-off to avoid a short circuit, or a data transfer, etc., to ensure the safety of the device, the main control device may be controlled to start the corresponding operation.

The central controller 220 may be connected to the interface Circuit 240 through an Inter-Integrated Circuit (IIC), and the interface Circuit 240 is used for connecting to a main control device, so as to implement communication connection between the central controller 220 and the main control device.

Besides, the submergence detecting circuit can protect the main control equipment, and can also be applied to toys, such as water toys like ship-shaped toys, and shells of the toys can also be regarded as machine boxes. In addition, the switch can also be applied to switch settings, such as a water-sensing switch and the like.

In addition, as shown in fig. 6, the environment detection circuit of the present application further includes a power supply switching circuit 250, a battery panel 260, and a battery voltage acquisition circuit 270.

The power supply switching circuit 250 with panel 260 connects, panel 260 with battery voltage acquisition circuit 270 connects, installs the battery on the panel 260, can be used for doing the environment detection circuit power supply, power supply switching circuit 250 is used for switching external power source and internal power source, voltage acquisition circuit 270 is used for gathering current operating voltage.

The power switching circuit 250 selects where the current circuit is used as the power source according to the external voltage and the battery voltage in the battery panel 260.

Fig. 7 is a schematic diagram of a power supply switching circuit.

The grid electrode of the PMOS tube is connected with the control chip to control the connection with an external power supply, the drain electrode of the PMOS tube is connected with the central controller, and the source electrode of the PMOS tube is connected with the battery panel, so that the grid electrode can control the connection and disconnection between the battery panel and the central controller through the voltage of the external power supply. When the voltage of the external power supply is greater than the preset value, the PMOS tube is disconnected, the external power supply is used at the moment, if the voltage of the external power supply is less than the preset value, the PMOS tube is connected, the power supply of the battery panel is used, so that the battery is protected, the specific preset value can be that the maximum working voltage of the battery panel is slightly smaller, for example, the maximum working voltage of the battery panel is 3.3v, the preset value can be set to be 3v, if the external voltage is less than 3v, the battery of the battery panel starts to be used, and when the external voltage is greater than 3v, the external voltage is reused.

The preset value is set in the control chip, when the voltage of the external power supply is larger than the preset value, the control chip gives a high level to the grid electrode of the PMOS pipe P1 to keep the disconnection of the PMOS pipe, otherwise, gives a low level to the grid electrode to keep the passage of the PMOS pipe. Thereby ensuring the life of the battery in the battery panel 260.

A diode Q1 can be connected between a pmos tube P1 (an n-type substrate, a P-channel and a MOS tube for carrying current by the flowing of a cavity) and the central controller, the cathode of the diode Q1 is connected with the central controller, the drain of the pmos tube at the anode is connected, and an external power supply is connected with the central controller through a diode Q2, so that the situation of reverse current flowing when the voltage is unstable is prevented.

The utility model provides a load with environment detection circuitry in the quick-witted case of this application, this circuit judges through the water logging and the destroy condition to quick-witted case, confirm the state that quick-witted case is located, tell the environment that the current machine of master control equipment in the quick-witted case is located with this, trigger the corresponding procedure that master control equipment carried, this machine case still is provided with power supply switching circuit simultaneously, panel and battery voltage acquisition circuit, the power quality that this environment detection circuitry used has been guaranteed, and the life-span of battery on the panel has been protected, make the life-span of environment detection circuitry prolonged, and then the guard time to electronic equipment has been prolonged, and simultaneously, environment detection circuitry simple structure, it is accurate to judge the environment, the cost is low, be fit for large-scale production, and be applicable to multiple application scenario, foretell water logging detection circuitry simple structure is small simultaneously, and convenient for installation, it is convenient to maintain, has fine compatibility.

The application also provides an electronic device, which comprises a main control device and the case.

The electronic device can be any electronic device, and can be a router, a tablet computer, a toy, some precision instrument or an industrial instrument, and the like. The main control equipment in the electronic equipment can be provided with the case, the case can detect the external environment to grasp the change of the external environment in real time, and when the environment is severe, the main control equipment can also protect the equipment as much as possible, such as sudden earthquake or flood, and when a user does not turn off a power supply and directly escapes, the equipment can also be directly powered off according to the immersion condition, so that the safety of the equipment is kept as much as possible, and the main control equipment plays a positive role in recovering the equipment after disasters.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In addition, each functional module or unit in each embodiment of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solution of the present invention or a part thereof which contributes to the prior art in essence can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and various media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention.

Claims

1. A case is characterized by comprising an environment detection circuit, wherein the environment detection circuit comprises a water immersion detection circuit, a first lead detection end, a second lead detection end and a central controller;

and the central controller is used for judging whether the case is soaked by water or not according to the identification signal.

2. A cabinet according to claim 1, wherein the water flood detection circuit comprises: the detection circuit comprises a triode, a first resistor, a second resistor, a first detection lead and a second detection lead;

3. A cabinet according to claim 1, wherein the environment detection circuit further includes at least one external interrupt circuit;

4. A cabinet according to claim 3, wherein the at least one external interrupt circuit includes a first external interrupt circuit and a second external interrupt circuit;

the first external interrupt circuit and the second external interrupt circuit are arranged at two ends of the case oppositely and used for detecting whether the case is destroyed at a corresponding position.

5. A cabinet according to claim 1, wherein the first wire detection terminal and the second wire detection terminal are disposed at a middle portion of the cabinet.

6. A cabinet according to claim 1, wherein the predetermined distance is between 0.5 cm and 1.5 cm.

7. A cabinet according to claim 1, further comprising: an interface circuit;

8. The chassis of claim 1, further comprising a power switching circuit, a battery panel, and a battery voltage acquisition circuit;

9. The chassis of claim 8, wherein the power switching circuit includes a pmos transistor and a control chip;

10. An electronic device comprising a host device and the chassis of any of claims 1-9.