CN113253161A - Circuit structure for measuring and burning PCB fuse - Google Patents
Circuit structure for measuring and burning PCB fuse Download PDFInfo
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- CN113253161A CN113253161A CN202110585510.XA CN202110585510A CN113253161A CN 113253161 A CN113253161 A CN 113253161A CN 202110585510 A CN202110585510 A CN 202110585510A CN 113253161 A CN113253161 A CN 113253161A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/74—Testing of fuses
Abstract
The invention relates to a circuit structure for measuring and burning a PCB fuse, which comprises a control chip, a reset circuit, a crystal oscillator circuit, a fuse measuring circuit and a BIOS burning circuit, wherein the reset circuit, the crystal oscillator circuit, the fuse measuring circuit and the BIOS burning circuit are all connected with the control chip; the PCB fuse measurement and the BIOS burning are integrated into one module through the control chip, automatic BIOS burning can be achieved, manpower is liberated, in addition, fuse measurement results and BIOS burning results can be visually reflected to workers through the state of the indicating lamp, and foolproof performance is improved.
Description
Technical Field
The invention belongs to the technical field of information, and particularly relates to a circuit structure for measuring and burning a PCB fuse.
Background
The existing BIOS firmware burning mode is to manually operate the connection between a BIOS burner and a PCB and manually control the switch of the BIOS burner to burn; the existing fuse measuring method is that an operator uses a universal meter to measure fuses of all functional interfaces on a PCB mainboard one by one, the conductivity of the fuses is checked, and the operator often uses a head of the universal meter to break the fuses in the measuring process; in addition, the operators respectively operate the BIOS burning and the PCB fuse measurement, which wastes manpower, and the BIOS burning result and the PCB fuse measurement result are not easy to track. This is a disadvantage of the prior art.
In view of the above, the present invention provides a circuit structure for measuring and burning PCB fuses; it is very necessary to solve the above-mentioned defects existing in the prior art.
Disclosure of Invention
The present invention is directed to a circuit structure for measuring and burning PCB fuses to solve the above-mentioned problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a circuit structure for measuring and burning PCB fuses comprises a control chip, a reset circuit, a crystal oscillator circuit, a fuse measuring circuit and a BIOS burning circuit;
the reset circuit is connected with a reset pin of the control chip through a lead, and the reset circuit enables an internal circuit of the control chip to enter an initial state;
the crystal oscillator circuit is connected with a crystal oscillator pin of the control chip through a wire and is used for generating a clock signal;
the fuse measuring circuit is connected with the control chip through a wire, judges the quality of the PCB fuse and displays the judgment result;
the BIOS burning circuit is connected with the control chip through a lead and burns the BIOS firmware.
Preferably, the fuse measuring circuit comprises a resistor R1, a resistor R2, a resistor R3, a fuse, a first indicator light and a second indicator light;
a first end of the resistor R1 is connected with a first pin of the control chip; the second end of the resistor R1 is connected with the first end of the fuse; the second end of the fuse is grounded;
a first end of the resistor R2 is connected with a second pin of the control chip; the second end of the resistor R2 is connected with the negative end of the first indicator light; the positive end of the first indicator light is connected with a first power supply;
the first end of the resistor R3 is connected with the third pin of the control chip; the second end of the resistor R3 is connected with the negative end of the second indicator light; the positive end of the second indicator light is connected with the second power supply, and the measurement result is visually reflected to an operator through the on-off states of the first indicator light and the second indicator light.
Preferably, the first pin of the control chip is set to a high level.
Preferably, the BIOS programming circuit comprises a resistor R4, a resistor R5, a transistor, a relay, a BIOS programming platelet, and a programming indicator light;
the first end of the resistor R4 is connected with the fourth pin of the control chip; the second end of the resistor R4 is connected with the base of the transistor; the emitter of the transistor is grounded; the collector of the transistor is connected with the first end of the resistor R5; a second end of the resistor R5 is connected with a third power supply;
the ground feet of the relay are grounded; a fifth pin of the relay is connected with a collector of the transistor; a common pin of the relay is connected with the power supply negative terminal of the BIOS burning platelet; a second pin of the relay is connected with a fourth power supply;
the positive power supply end of the BIOS burning platelet is connected with a fourth power supply; the second pin of the BIOS burning platelet is connected with the anode of the burning indicator light; the fourth pin of the BIOS burning small plate is connected with the negative electrode of the burning indicating lamp, the BIOS burning small plate is controlled by the relay to carry out automatic burning, manpower is liberated, and the BIOS burning result is visually reflected to an operator through the on-off state of the burning indicating lamp.
Preferably, the crystal triode is an NPN triode with the model of KSD1691YSTU, so that the cost is low and saved.
Preferably, the control chip adopts a singlechip with the model of STC89C52, so that the price is low and the cost is saved.
Preferably, the reset circuit comprises an electrolytic capacitor and a resistor R6, wherein the anode of the electrolytic capacitor is connected with a fifth power supply, the cathode of the electrolytic capacitor is connected with the first end of the resistor R6, the first end of the resistor R6 is connected with the reset pin of the control chip, and the second end of the resistor R6 is grounded, so that the internal circuit of the control chip can be put into an initial state.
Preferably, the crystal oscillator circuit comprises a crystal oscillator and two ceramic chip capacitors, wherein the first ends of the two ceramic chip capacitors are grounded, the second ends of the two ceramic chip capacitors are respectively connected with the first end of the crystal oscillator and the second end of the crystal oscillator, the first end of the crystal oscillator is connected with a first crystal oscillator pin of the control chip, and the second end of the crystal oscillator is connected with a second crystal oscillator pin of the control chip to generate a clock signal, so that the timing is facilitated.
The invention has the advantages that the PCB fuse measurement and the BIOS burning are integrated into a module through one control chip, automatic BIOS burning can be realized, manpower is liberated, and in addition, the fuse measurement result and the BIOS burning result can be intuitively reflected to workers through the state of the indicating lamp.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Drawings
Fig. 1 is a schematic circuit diagram.
1 is a control chip, 21 is a fuse, 22 is a first indicator light, 23 is a second indicator light, 31 is a transistor, 32 is a relay, 33 is a BIOS burning platelet, 34 is a burning indicator light, 41 is an electrolytic capacitor, 51 is a crystal oscillator, and 52 is a ceramic chip capacitor.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of specific examples, which are illustrative of the present invention and are not limited to the following embodiments.
As shown in fig. 1, a circuit structure for PCB fuse measurement and burning includes a control chip 1, a reset circuit, a crystal oscillator circuit, a fuse measurement circuit, and a BIOS burning circuit.
The reset circuit comprises an electrolytic capacitor 41 and a resistor R6, wherein the anode of the electrolytic capacitor 41 is connected with a fifth power supply, the cathode of the electrolytic capacitor 41 is connected with the first end of a resistor R6, the first end of the resistor R6 is connected with a reset pin of the control chip 1, and the second end of the resistor R6 is grounded; the reset circuit is connected with a reset pin of the control chip 1 through a lead, and the reset circuit enables an internal circuit of the control chip 1 to enter an initial state.
The crystal oscillator circuit comprises a crystal oscillator 51 and two ceramic chip capacitors 52, wherein the first ends of the two ceramic chip capacitors 52 are grounded, the second ends of the two ceramic chip capacitors 52 are respectively connected with the first end of the crystal oscillator 51 and the second end of the crystal oscillator 51, the first end of the crystal oscillator 51 is connected with a first crystal oscillator pin of the control chip 1, and the second end of the crystal oscillator 51 is connected with a second crystal oscillator pin of the control chip 1; the crystal oscillator circuit is connected with a crystal oscillator pin of the control chip 1 through a wire, and the crystal oscillator circuit is used for generating a clock signal.
The memory selection pin of the control chip 1 is connected to the fifth power supply through the resistor R7, so that the control chip 1 selects the internal memory.
The fuse measuring circuit is connected with the control chip 1 through a wire, judges the quality of the PCB fuse and displays the judgment result; the fuse measuring circuit comprises a resistor R1, a resistor R2, a resistor R3, a fuse 21, a first indicator lamp 22 and a second indicator lamp 23;
a first end of the resistor R1 is connected with a first pin of the control chip 1; the second end of the resistor R1 is connected with the first end of the fuse 21; the second end of the fuse 21 is grounded;
a first end of the resistor R2 is connected with a second pin of the control chip 1; a second end of the resistor R2 is connected to the negative terminal of the first indicator light 22; the positive end of the first indicator lamp 22 is connected with a first power supply;
the first end of the resistor R3 is connected with the third pin of the control chip 1; the second end of the resistor R3 is connected with the negative end of the second indicator light 23; the positive end of the second indicator light 23 is connected with the second power supply, and the measurement result is intuitively reflected to the operator through the on-off states of the first indicator light 22 and the second indicator light 23.
The BIOS burning circuit is connected with the control chip 1 through a lead and burns BIOS firmware; the BIOS burning circuit comprises a resistor R4, a resistor R5, a transistor 31, a relay 32, a BIOS burning platelet 33 and a burning indicator lamp 34; the transistor 31 is an NPN transistor with a model number of KSD1691 YSTU.
The first end of the resistor R4 is connected with the fourth pin of the control chip 1; a second end of the resistor R4 is connected to the base of the transistor 31; the emitter of the transistor 31 is grounded; the collector of the transistor 31 is connected with a first end of a resistor R5; a second end of the resistor R5 is connected with a third power supply; the ground of the relay 32 is grounded; a fifth pin of the relay 32 is connected with a collector of the transistor 31; the common pin of the relay 32 is connected with the power supply negative terminal of the BIOS burning platelet 33; the second pin of the relay 32 is connected to a fourth power supply.
The positive power supply end of the BIOS burning platelet 33 is connected with a fourth power supply; the second pin of the BIOS burning platelet 33 is connected with the anode of the burning indicator lamp 34; the fourth pin of the small BIOS burning board 33 is connected with the negative electrode of the burning indicator lamp 34, the relay 32 controls the small BIOS burning board 33 to automatically burn, manpower is saved, and the burning result of the BIOS is visually reflected to an operator through the on-off state of the burning indicator lamp 34.
The control chip 1 adopts a singlechip with the model STC89C52, the singlechip is low in price and can save cost, the singlechip is matched with a peripheral device to control the BIOS automatic burning, the quality of a PCB fuse is measured at the same time, the BIOS burning and the PCB fuse measurement are integrated into a module, and the specific operation is as follows:
placing the PCB mainboard on a corresponding carrier, and pricking corresponding fuse measuring points and burning points by using a probe; the second end and the first end of the fuse 21 are respectively connected to GND and a first pin of the singlechip through wires; setting a first pin of the singlechip as a high level, and when the PCB mainboard is placed on a corresponding carrier, pressing down the PCB mainboard through a clamping hand to enable a fuse measuring point to be contacted with the probe; at the moment, the quality of the fuse is judged by reading the state of the IO port of the single chip microcomputer, if the fuse is good, the fuse is equivalent to a passage, the IO port of the single chip microcomputer is pulled down, the first indicator lamp 22 is lightened, and if the fuse is not good, the fuse is equivalent to an open circuit, the IO port of the single chip microcomputer cannot be pulled down, and the second indicator lamp 23 is lightened;
the burning signal pin on the BIOS burning platelet 33 is connected with the corresponding burning measuring point on the PCB through a wire and a probe, the power supply negative terminal of the BIOS burning platelet 33 is connected with the common pin of the relay 32, when the fuse measurement is finished, the single chip microcomputer controls the relay 32 to work, the ground pin is conducted with the common pin at the moment, the ground pin is connected with the GND, so that the BIOS burning platelet 33 normally supplies power to start burning the BIOS firmware, and after the burning is finished, the burning indicating lamp 34 corresponding to the BIOS burning platelet 33 is turned on to indicate that the burning is finished.
The above disclosure is only for the preferred embodiments of the present invention, but the present invention is not limited thereto, and any non-inventive changes that can be made by those skilled in the art and several modifications and amendments made without departing from the principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. A circuit structure for measuring and burning PCB fuses is characterized by comprising a control chip, a reset circuit, a crystal oscillator circuit, a fuse measuring circuit and a BIOS burning circuit;
the reset circuit is connected with a reset pin of the control chip through a lead, and the reset circuit enables an internal circuit of the control chip to enter an initial state;
the crystal oscillator circuit is connected with a crystal oscillator pin of the control chip through a wire and is used for generating a clock signal;
the fuse measuring circuit is connected with the control chip through a wire, judges the quality of the PCB fuse and displays the judgment result;
the BIOS burning circuit is connected with the control chip through a lead and burns the BIOS firmware.
2. The circuit structure of claim 1, wherein the fuse measuring circuit comprises a resistor R1, a resistor R2, a resistor R3, a fuse, a first indicator light, and a second indicator light;
a first end of the resistor R1 is connected with a first pin of the control chip; the second end of the resistor R1 is connected with the first end of the fuse; the second end of the fuse is grounded;
a first end of the resistor R2 is connected with a second pin of the control chip; the second end of the resistor R2 is connected with the negative end of the first indicator light; the positive end of the first indicator light is connected with a first power supply;
the first end of the resistor R3 is connected with the third pin of the control chip; the second end of the resistor R3 is connected with the negative end of the second indicator light; the positive end of the second indicator light is connected with the second power supply.
3. The circuit structure of claim 2, wherein the first pin of the control chip is set to high level.
4. The circuit structure of claim 1, wherein the BIOS burning circuit comprises a resistor R4, a resistor R5, a transistor, a relay, a BIOS burning board, and a burning indicator light;
the first end of the resistor R4 is connected with the fourth pin of the control chip; the second end of the resistor R4 is connected with the base of the transistor; the emitter of the transistor is grounded; the collector of the transistor is connected with the first end of the resistor R5; a second end of the resistor R5 is connected with a third power supply;
the ground feet of the relay are grounded; a fifth pin of the relay is connected with a collector of the transistor; a common pin of the relay is connected with the power supply negative terminal of the BIOS burning platelet; a second pin of the relay is connected with a fourth power supply;
the positive power supply end of the BIOS burning platelet is connected with a fourth power supply; the second pin of the BIOS burning platelet is connected with the anode of the burning indicator light; and the fourth pin of the BIOS burning platelet is connected with the negative electrode of the burning indicator lamp.
5. The circuit structure of claim 4, wherein the transistor is a NPN transistor with a model number of KSD1691 YSTU.
6. The circuit structure of claim 1, wherein the control chip is a single chip microcomputer with model number STC89C 52.
7. The circuit structure of claim 1, wherein the reset circuit comprises an electrolytic capacitor and a resistor R6, wherein an anode of the electrolytic capacitor is connected to a fifth power supply, a cathode of the electrolytic capacitor is connected to the first terminal of the resistor R6, a first terminal of the resistor R6 is connected to the reset pin of the control chip, and a second terminal of the resistor R6 is grounded.
8. The circuit structure of claim 1, wherein the crystal oscillator circuit comprises a crystal oscillator, two ceramic capacitors, first ends of the two ceramic capacitors are grounded, second ends of the two ceramic capacitors are respectively connected to the first end of the crystal oscillator and the second end of the crystal oscillator, the first end of the crystal oscillator is connected to a first crystal pin of the control chip, and the second end of the crystal oscillator is connected to a second crystal pin of the control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585510.XA CN113253161B (en) | 2021-05-27 | 2021-05-27 | Circuit structure for measuring and burning PCB fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585510.XA CN113253161B (en) | 2021-05-27 | 2021-05-27 | Circuit structure for measuring and burning PCB fuse |
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| Publication Number | Publication Date |
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| CN113253161A true CN113253161A (en) | 2021-08-13 |
| CN113253161B CN113253161B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110585510.XA Active CN113253161B (en) | 2021-05-27 | 2021-05-27 | Circuit structure for measuring and burning PCB fuse |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1011328A (en) * | 1996-06-27 | 1998-01-16 | Hitachi Ltd | Error display system |
| CN1719425A (en) * | 2004-07-07 | 2006-01-11 | 鸿富锦精密工业（深圳）有限公司 | BIOS online burning system |
| US20060047994A1 (en) * | 2004-08-26 | 2006-03-02 | Hon Hai Precision Industry Co., Ltd. | Method for burning BIOS |
| CN202495407U (en) * | 2012-02-28 | 2012-10-17 | 成都措普科技有限公司 | Fuse monitor with sound-light prompt function |
| US20130024678A1 (en) * | 2010-03-26 | 2013-01-24 | Beijing Lenovo Software Ltd | Electronic device, configurable component and configuration information storage method thereof |
| CN203365613U (en) * | 2013-05-07 | 2013-12-25 | 阳光电源（上海）有限公司 | Fuse detection circuit, and combiner box and inverter provided with the circuit |
| CN204256101U (en) * | 2014-11-24 | 2015-04-08 | 广东易事特电源股份有限公司 | Fuse circuit for detecting and there is the charging circuit of this fuse circuit for detecting |
| CN211604096U (en) * | 2020-07-17 | 2020-09-29 | 深圳市七彩虹禹贡科技发展有限公司 | Online BIOS burning circuit |
-
2021
- 2021-05-27 CN CN202110585510.XA patent/CN113253161B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1011328A (en) * | 1996-06-27 | 1998-01-16 | Hitachi Ltd | Error display system |
| CN1719425A (en) * | 2004-07-07 | 2006-01-11 | 鸿富锦精密工业（深圳）有限公司 | BIOS online burning system |
| US20060047994A1 (en) * | 2004-08-26 | 2006-03-02 | Hon Hai Precision Industry Co., Ltd. | Method for burning BIOS |
| US20130024678A1 (en) * | 2010-03-26 | 2013-01-24 | Beijing Lenovo Software Ltd | Electronic device, configurable component and configuration information storage method thereof |
| CN202495407U (en) * | 2012-02-28 | 2012-10-17 | 成都措普科技有限公司 | Fuse monitor with sound-light prompt function |
| CN203365613U (en) * | 2013-05-07 | 2013-12-25 | 阳光电源（上海）有限公司 | Fuse detection circuit, and combiner box and inverter provided with the circuit |
| CN204256101U (en) * | 2014-11-24 | 2015-04-08 | 广东易事特电源股份有限公司 | Fuse circuit for detecting and there is the charging circuit of this fuse circuit for detecting |
| CN211604096U (en) * | 2020-07-17 | 2020-09-29 | 深圳市七彩虹禹贡科技发展有限公司 | Online BIOS burning circuit |
Non-Patent Citations (1)
| Title |
|---|
| 马骏毅: "BIOS步步高升", 《电脑爱好者》 * |
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| CN113253161B (en) | 2023-02-28 |
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