CN212572068U - PCB design protection circuit and device - Google Patents
PCB design protection circuit and device Download PDFInfo
- Publication number
- CN212572068U CN212572068U CN202021259075.9U CN202021259075U CN212572068U CN 212572068 U CN212572068 U CN 212572068U CN 202021259075 U CN202021259075 U CN 202021259075U CN 212572068 U CN212572068 U CN 212572068U
- Authority
- CN
- China
- Prior art keywords
- resistor
- module
- pin
- switch
- protection circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Protection Of Static Devices (AREA)
Abstract
The utility model discloses a PCB design protection circuit and a device, wherein the circuit comprises a drive module U1, a drive module U2, an MCU module and a switch; one end of the switch is connected with one end of a pin 2 of the driving module U1, the other end of the switch is connected with a power supply negative end of the pin 2 of the MCU module, a control end of the switch is connected with a resistor R3, and the other end of the resistor R3 is connected with a power supply positive electrode; one end of a pin 1 of the driving module U1 is connected with a data interface PORT, one end of a pin 1 of the driving module U1 is connected with a driving module U2, and the other end of the driving module U2 is connected with an MCU module. The utility model discloses a PCB designs protection circuit, when preventing that entire system from becoming invalid, breaks off the trouble module, prevents to influence entire system, and the trouble is diagnosed in time, in time collects data, and the fault indication to can carry out failure diagnosis, provide data support for lasting the improvement.
Description
Technical Field
The utility model belongs to the technical field of automated control, in particular to PCB design protection circuit and device.
Background
The PCB, which is also called Printed Circuit Board (PCB) in chinese name, is an important electronic component, is a support body for electronic components, is a carrier for electrical connection of electronic components, and can be applied to various automation control fields, especially to a vehicle controller, and fig. 2 shows the existing vehicle controller technology: the PCB protection circuit comprises a drive module U1, a drive module U2 and an MUC module, wherein the MUC module comprises a pin 1 power supply positive end, a pin 2 power supply negative end and a pin 3 detection PORT S, a pin 2 of the drive module U1 is connected with a pin 2 power supply negative end of the MUC module, one end of the pin 1 of the drive module U1 is connected with one end of a data interface PORT and one end of the drive module U2, the other end of the drive module U2 is connected with the MUC module and used for protecting devices on a PCB, however, in practical application, the devices on the PCB in the product fail, so that the module fails, and devices on the same communication network with the module also fail, the risk is very high, and serious consequences are caused, as follows:
1. there is no backup measure.
2. Affecting the normal work of other equipment.
3. It is not easy to analyze the failure.
4. The whole system is crashed and cannot work normally.
Therefore, it is necessary to design a circuit to solve the above problems.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a PCB design protection circuit and device to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a PCB design protection circuit comprises a drive module U1, a drive module U2, an MCU module and a switch;
one end of the switch is connected with one end of a pin 2 of the driving module U1, the other end of the switch is connected with a power supply negative end of the pin 2 of the MCU module, a control end of the switch is connected with a resistor R3, and the other end of the resistor R3 is connected with a power supply positive electrode;
one end of a pin 1 of the driving module U1 is connected with a data interface PORT, one end of a pin 1 of the driving module U1 is connected with a driving module U2, and the other end of the driving module U2 is connected with an MCU module;
and a pin 3 detection port S of the MCU module and one end of the switch are connected with a resistor R1, one end of a resistor R1 is connected with one end of the switch, and the other end of the resistor R1 is connected with a pin 3 detection port S of the MCU module.
Further, a resistor R4 is arranged between the MCU module and the switch;
one end of the resistor R4 is connected with a pin 4 control port CTRL of the MCU module, and the other end of the resistor R4 is connected with a control end of the switch and one end of the resistor R3.
Further, the other end of the resistor R1 is connected with a diode D1, and the output end of the diode D1 is connected with the positive power supply terminal of pin 1 of the MCU module.
Further, a resistor R2 is arranged between the resistor R1 and the MCU module;
one end of the resistor R2 is connected with the other end of the resistor R1, and the other end of the resistor R2 is connected with the power supply negative end of the pin 2 of the MCU module.
Further, a diode D2 is arranged between two ends of the switch, and the diode D2 is connected in parallel with the switch.
Further, the input end of the diode D2 is connected to the power supply negative terminal of pin 2 of the MCU, and the output end of the diode D2 is connected to one end of the resistor R1.
The utility model also provides a PCB design protection device, the device includes foretell PCB design protection circuit.
The utility model discloses a technological effect and advantage:
1. the utility model discloses a PCB designs protection circuit, when preventing that entire system from becoming invalid, breaks off the trouble module, prevents to influence entire system, and the trouble is diagnosed in time, in time collects data, and the fault indication to can carry out failure diagnosis, provide data support for lasting the improvement.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 shows a hardware framework diagram of an embodiment of the invention;
fig. 2 shows a prior art hardware framework diagram.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are 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 some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a PCB design protection circuit as shown in figure 1, which comprises a drive module U1, a drive module U2, an MCU module and a switch;
one end of the switch is connected with one end of a pin 2 of the driving module U1, the other end of the switch is connected with a power supply negative end of the pin 2 of the MCU module, a control end of the switch is connected with a resistor R3, and the other end of the resistor R3 is connected with a power supply positive electrode;
one end of a pin 1 of the driving module U1 is connected with a data interface PORT, one end of a pin 1 of the driving module U1 is connected with a driving module U2, and the other end of the driving module U2 is connected with an MCU module;
and a pin 3 detection port S of the MCU module and one end of the switch are connected with a resistor R1, one end of a resistor R1 is connected with one end of the switch, and the other end of the resistor R1 is connected with a pin 3 detection port S of the MCU module.
A resistor R4 is arranged between the MCU module and the switch;
one end of the resistor R4 is connected with a pin 4 control port CTRL of the MCU module, and the other end of the resistor R4 is connected with a control end of the switch and one end of the resistor R3;
the other end of the resistor R1 is connected with a diode D1, and the output end of the diode D1 is connected with the positive end of a power supply of a pin 1 of the MCU module;
a resistor R2 is arranged between the resistor R1 and the MCU module;
one end of the resistor R2 is connected with the other end of the resistor R1, and the other end of the resistor R2 is connected with the power supply negative end of the pin 2 of the MCU module;
a diode D2 is arranged between two ends of the switch, and the diode D2 is connected with the switch in parallel;
the input end of the diode D2 is connected with the power supply negative end of the pin 2 of the MCU, and the output end of the diode D2 is connected with one end of the resistor R1;
the utility model also provides a PCB design protection device, the device includes foretell PCB design protection circuit.
This practical theory of operation:
referring to the attached drawing 1 of the specification, by arranging the switch on the PCB, when the device or the driving module U1 fails and is short-circuited, the CTRL of the MCU module controls the switch to turn off the switch, thereby disconnecting the device or the driving module U1, ensuring that other modules of the device continue to operate without affecting other devices connected to the PORT, and the S terminal of the MCU module can detect the operating state of the fuse R, and if S is a low level, it indicates that the device or the driving module U1 of the device is normal, and if S is another state, it indicates that the device or the driving module U1 of the device has failed, and the device needs to be maintained in an emergency operating mode at present;
when the device or driving module U1 is normal, the control port CTRL of the MCU module outputs a high level or a high impedance state, and the switch is turned on by the resistor R4 and the pull-up resistor R3, so that the device or driving module U1 functions; when the device or the driving module U1 fails and is short-circuited, the control PORT CTRL of the MCU module outputs a low level, and the switch is turned off through the resistor R4, so that the device or the driving module U1 is turned off, and the PORT is not affected.
Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. A PCB design protection circuit which characterized in that: the circuit comprises a driving module U1, a driving module U2, an MCU module and a switch;
one end of the switch is connected with one end of a pin 2 of the driving module U1, the other end of the switch is connected with a power supply negative end of the pin 2 of the MCU module, a control end of the switch is connected with a resistor R3, and the other end of the resistor R3 is connected with a power supply positive electrode;
one end of a pin 1 of the driving module U1 is connected with a data interface PORT, one end of a pin 1 of the driving module U1 is connected with a driving module U2, and the other end of the driving module U2 is connected with an MCU module;
and a pin 3 detection port S of the MCU module and one end of the switch are connected with a resistor R1, one end of a resistor R1 is connected with one end of the switch, and the other end of the resistor R1 is connected with a pin 3 detection port S of the MCU module.
2. The PCB design protection circuit of claim 1, wherein: a resistor R4 is arranged between the MCU module and the switch;
one end of the resistor R4 is connected with a pin 4 control port CTRL of the MCU module, and the other end of the resistor R4 is connected with a control end of the switch and one end of the resistor R3.
3. The PCB design protection circuit of claim 1, wherein: the other end of the resistor R1 is connected with a diode D1, and the output end of the diode D1 is connected with the positive end of the power supply of pin 1 of the MCU module.
4. The PCB design protection circuit of claim 1, wherein: a resistor R2 is arranged between the resistor R1 and the MCU module;
one end of the resistor R2 is connected with the other end of the resistor R1, and the other end of the resistor R2 is connected with the power supply negative end of the pin 2 of the MCU module.
5. The PCB design protection circuit of claim 1, wherein: and a diode D2 is arranged between two ends of the switch, and the diode D2 is connected with the switch in parallel.
6. The PCB design protection circuit of claim 5, wherein: the input end of the diode D2 is connected with the power supply negative end of the pin 2 of the MCU, and the output end of the diode D2 is connected with one end of the resistor R1.
7. A PCB design protection device which characterized in that: the apparatus includes a PCB design protection circuit of any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021259075.9U CN212572068U (en) | 2020-06-30 | 2020-06-30 | PCB design protection circuit and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021259075.9U CN212572068U (en) | 2020-06-30 | 2020-06-30 | PCB design protection circuit and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212572068U true CN212572068U (en) | 2021-02-19 |
Family
ID=74614272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021259075.9U Active CN212572068U (en) | 2020-06-30 | 2020-06-30 | PCB design protection circuit and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212572068U (en) |
-
2020
- 2020-06-30 CN CN202021259075.9U patent/CN212572068U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107316598B (en) | Hot-plug short circuit control device and method | |
| CN103605596A (en) | System and method for collaborative power management of FPGA (field programmable gata array) chip and BMC (baseboard management controller) chip used on ATCA (advanced telecom computing architecture) blade | |
| CN104917700A (en) | Management unit and exchange unit dual-redundancy switch | |
| CN104635102A (en) | Electronic component detection device and detection method thereof | |
| CN111077763A (en) | Vehicle-mounted display device redundancy control method and device | |
| CN201302715Y (en) | Device for computers | |
| CN109032318A (en) | A kind of power monitoring system and storage server system | |
| CN106300642B (en) | A kind of dual power supply redundancy cold standby circuit with power supply status output | |
| CN112630648B (en) | High Bian Binglian contactor adhesion detection circuit of battery system | |
| CN116841373B (en) | Embedded computing module switching circuit, carrier plate system and server | |
| CN212572068U (en) | PCB design protection circuit and device | |
| CN111508418B (en) | Driving circuit and driving method of display device | |
| CN209823500U (en) | Case and case panel of direct current transmission valve control system | |
| CN204633800U (en) | The switch of a kind of administrative unit and the two redundancy of crosspoint | |
| CN218824636U (en) | Power supply detection device for server hard disk backboard | |
| CN112000528A (en) | Method and system for detecting board card signal short circuit through CPLD | |
| CN114878113B (en) | Liquid leakage detection device and detection method for liquid cooling server | |
| CN116048192A (en) | Clock backup circuit, control method, system, device, medium and server | |
| CN214623642U (en) | Aviation FC bus daughter card testing device based on SRIO bus | |
| CN109144827A (en) | A kind of method and system monitoring motherboard power supply and signal condition | |
| US7547991B2 (en) | Redundancy power for communication devices | |
| CN109378896B (en) | Be applied to GYK equipment and have multi-functional power strip | |
| CN212256076U (en) | PCB design protection circuit and device | |
| CN115047750B (en) | Non-inductive backup circuit board | |
| CN216599422U (en) | Laser driving power supply module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |