CN214011769U - On-line power burning circuit - Google Patents
On-line power burning circuit Download PDFInfo
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- CN214011769U CN214011769U CN202023308441.8U CN202023308441U CN214011769U CN 214011769 U CN214011769 U CN 214011769U CN 202023308441 U CN202023308441 U CN 202023308441U CN 214011769 U CN214011769 U CN 214011769U
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Abstract
The utility model discloses an online power burns record circuit, connect the host computer through the USB interface, USB changes the signal that the TTL module converted the level of host computer into singlechip U2 homoenergetic discernment among the singlechip control module and communicates, the signal isolation module is favorable to burning the unidirectional transmission of in-process communication, the receiving and dispatching switching module is responsible for burning the in-process, control communication transmission signal and data receiving and dispatching and switching task, this signal output module passes through output port CON1 with data signal output and burns record to the terminal power supply singlechip of going up electricity. The circuit product that user's accessible on-line power burnt circuit made changes parameters such as power supply current, and easy operation is convenient, solves the power upgrading process, tears the shell open loaded down with trivial details, long, test and refresh inefficiency to and there is the fixed, unchangeable problem of electric current.
Description
Technical Field
The utility model relates to the technical field of circuits, especially, relate to an online power burns record circuit.
Background
The normal work of the integrated circuit often needs to burn programs into a core control chip, in the use process of a system power supply, in order to solve certain problems or enhance functions or stability, software program upgrading or hardware upgrading needs to be carried out on the integrated circuit, and the integrated circuit needs to be tested after upgrading, so that the influence on user experience and negative influence caused by the fact that a bad power supply flows to a product or a guest terminal is avoided.
Aiming at the problem of power supply upgrading, the output current of the power supply needs to be adjusted by changing the power supply current sampling resistor. If the power supply is assembled, the power supply is usually disassembled and refreshed, and the power supply is required to be inserted into a server from a newly assembled state to perform data reading test after refreshing. The process is complex to disassemble, the required time is long, the testing and refreshing efficiency is low, and in addition, the problems of fixed current and inflexibility still exist in most of current power supply upgrading.
Therefore, it is desirable to provide a technical solution for an on-line power burning circuit to solve the problems in the prior art.
SUMMERY OF THE UTILITY MODEL
To the defect that above-mentioned prior art exists, the utility model aims to provide an online power burns record circuit.
In order to achieve the above object, the utility model provides an on-line power burning circuit for the host computer burns the data signal to the terminal power singlechip of electricity, including signal isolation module, singlechip control module, receiving and dispatching switching module and signal output module; the signal isolation module is connected with the single-chip microcomputer control module and used for unidirectional communication transmission signals; the singlechip control module is respectively connected with the signal isolation module and the transceiving switching module and is used for controlling communication transmission signals and data transceiving; the receiving and transmitting switching module is respectively connected with the single chip microcomputer control module and the signal output module and is used for carrying out data receiving and transmitting switching during burning; and the signal output module is respectively connected with the receiving and transmitting switching module and the terminal power supply singlechip and is used for outputting and burning data signals.
Preferably, the circuit further comprises a power supply module, wherein the power supply module comprises a voltage stabilizing chip, and the voltage stabilizing chip comprises a voltage input end, a voltage output end and a grounding end; the single chip microcomputer control module comprises a single chip microcomputer, and the single chip microcomputer comprises a U2 power supply pin and a U2 grounding pin; the voltage input end is connected with an external voltage of 12V, the voltage output end is connected with the U2 power supply pin, and the grounding end and the U2 grounding pin are both connected with a digital ground.
Preferably, the single chip microcomputer comprises a data pin, and the data pin comprises a data output pin; the transceiving switching module comprises an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, an NPN amplifying tube and an NMOS tube, wherein a first end of the eleventh resistor is connected to the data output pin HTHO, a second end of the eleventh resistor is connected to a base of the NPN amplifying tube, an emitter of the NPN amplifying tube is connected to a first end of the thirteenth resistor, a gate of the NMOS tube and a first end of the twelfth resistor, a source of the NMOS tube is connected to a first end of the fourteenth resistor, a collector of the NPN amplifying tube, a second end of the thirteenth resistor R13 and a second end of the fourteenth resistor R14 are all connected to a digital ground, and a second end of the twelfth resistor is connected to a regulated power supply.
Preferably, the data pin comprises a data input pin, and the signal output module comprises an output port, a fourth resistor and a sixth resistor; the data input pin is connected with a first end of a sixth resistor and a first end of a fourth resistor, a second end of the sixth resistor and a drain electrode of the NMOS tube are connected with a first end of the output port, and a second end of the fourth resistor is connected with a digital ground.
Preferably, the circuit further comprises a USB to TTL module, and the USB to TTL module is respectively connected to the upper computer and the signal isolation module, and is configured to communicate the signal that can be identified by level conversion.
Preferably, the signal isolation module includes first opto-coupler and second opto-coupler, the singlechip includes first communication pin, first communication pin includes first communication receiving pin and first communication sending pin, the second end of first opto-coupler with first communication receiving pin is connected, the first end of second opto-coupler with first communication sending pin is connected.
Preferably, the USB to TTL module includes a second communication pin, the second communication pin includes a second communication receiving pin and a second communication sending pin, the second communication receiving pin is connected to a second end of the second optical coupler, and the second communication sending pin is connected to a fourth end of the first optical coupler.
Preferably, the signal isolation module includes first resistance, second resistance, third resistance and fifth resistance, the third termination of first opto-coupler is digit ground, the third termination of second opto-coupler is power ground, the second end of first opto-coupler passes through third resistance connection constant voltage power supply, the first end of second opto-coupler passes through fifth resistance R5 and connects constant voltage power supply, the first end of first opto-coupler passes through second resistance connection system power, the second end of second opto-coupler passes through first resistance connection system power.
Preferably, the USB to TTL module includes a clock circuit, a conversion chip and a USB interface, where the conversion chip includes a clock pin, a U3 power pin, a U3 ground pin and a differential signal pin, the clock circuit is connected to the clock pin, the U3 power pin is connected to a system power supply, the U3 ground pin is connected to a power ground, and the differential signal pin is connected to the USB interface.
Preferably, the circuit further comprises a voice reminding module, a key module and an indicator light module which are electrically connected with the single chip microcomputer.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides an online power burns record circuit, through the USB interface connection host computer, USB changes the signal that the TTL module converted the level of host computer into singlechip U2 homoenergetic discernment among the singlechip control module and communicates, the signal isolation module is favorable to burning the unidirectional transmission of in-process communication, the receiving and dispatching switching module is responsible for burning the in-process, control communication transmission signal and data receiving and dispatching and switching task, this signal output module burns record to the terminal power supply singlechip of going up electricity with data signal output through output port CON 1. The circuit product that user's accessible on-line power burnt circuit made changes parameters such as power supply current, and easy operation is convenient, solves the power upgrading process, tears the shell open loaded down with trivial details, long, test and refresh inefficiency to and there is the fixed, unchangeable problem of electric current.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and those skilled in the art can also obtain other drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of an embodiment of the present invention.
Description of reference numerals:
1. USB changes to TTL module; 2. a signal isolation module; 3. a single chip microcomputer control module; 4. a transmit-receive switching module; 5. a signal output module; 6. a power supply module; 7. a voice reminding module; 8. a key module; 9. and an indicator light module.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The terms "including" and "having," and any variations thereof, in the description and claims of the invention and the above description of the drawings are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and in the claims, or in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. In the specification and claims of the present invention or in the drawings, directional terms such as "upper", "lower", "left", "right", "front", "rear", "side" and the like are used for relative positional description with respect to the drawings provided, and are not used to describe a specific order of actual products.
Referring to fig. 1, an embodiment of the present invention provides an on-line power burning circuit for burning a data signal to an on-line terminal power single chip microcomputer by an upper computer. The USB-TTL conversion module comprises a USB-TTL conversion module 1, a signal isolation module 2, a single chip microcomputer control module 3, a transceiving switching module 4 and a signal output module 5; USB changes TTL module 1 and is connected with host computer and signal isolation module respectively, and signal isolation module 2 is connected with USB changes TTL module 1 and single-chip microcomputer control module 3 respectively, and single-chip microcomputer control module 3 is connected with signal isolation module 2 and receiving and dispatching switching module 4 respectively, and receiving and dispatching switching module 4 is connected with single-chip microcomputer control module 3 and signal output module 5 respectively, and signal output module 5 is connected with receiving and dispatching switching module 4 and terminal power supply singlechip respectively for export and burn the record with data signal. The circuit product that user's accessible on-line power burnt circuit made changes parameters such as power supply current, and easy operation is convenient, solves the power upgrading process, tears the shell open loaded down with trivial details, long, test and refresh inefficiency to and there is the fixed, unchangeable problem of electric current.
The circuit further comprises a power supply module 6, wherein the power supply module 6 comprises a voltage stabilizing chip U1, and the voltage stabilizing chip comprises a voltage input end IN, a voltage output end OUT and a ground end GND; the singlechip control module 3 comprises a singlechip U2, and the singlechip U2 comprises a U2 power supply pin and a U2 grounding pin; the voltage input terminal IN is connected to an external voltage of 12V, the voltage output terminal OUT is connected to the U2 power supply pin, and the ground terminal and the U2 ground pin are both connected to a digital ground SGND. The voltage stabilizing chip U1 adopted by the power supply module 6 mainly converts an external 12V voltage into a stabilized voltage power supply of 3.3V, so as to provide a chip voltage and/or a power supply voltage of each module inside the on-line power supply burning circuit.
Further, the power supply module 6 further includes a plurality of capacitors disposed between the external voltage 12V and the digital ground SGND, and between the regulated power supply 3.3V and the digital ground SGND, for filtering out noise. Specifically, the present embodiment provides a first capacitor C1, a second capacitor C2 and a third capacitor C3, wherein a first terminal of the first capacitor C1 is connected to the external voltage 12V, a first terminal of the second capacitor C2 and a first terminal of the third capacitor C3 are both connected to the regulated power supply 3.3V, and a second terminal of the first capacitor C1, a second terminal of the second capacitor C2 and a second terminal of the third capacitor C3 are all connected to the digital SGND.
The single chip microcomputer U2 comprises data pins, and the data pins comprise a data output pin HTHO and a data input pin HTHI. The transceiving switching module 4 includes an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, an NPN amplifying tube Q12, and an NMOS tube Q6, wherein a first end of the eleventh resistor R11 is connected to the data output pin HTHO, a second end of the eleventh resistor R11 is connected to a base of the NPN amplifying tube Q12, an emitter of the NPN amplifying tube Q12 is connected to a first end of the thirteenth resistor R13, a gate of the NMOS tube Q6, and a first end of the twelfth resistor R12, a source of the NMOS tube Q6 is connected to a first end of the fourteenth resistor R14, a collector of the NPN amplifying tube Q12, a second end of the thirteenth resistor R13, and a second end of the fourteenth resistor R14 are all connected to the digital SGND, and a second end of the twelfth resistor R12 is connected to the regulated power supply voltage of 3.3V. The receiving and transmitting switching module 4 is mainly used for controlling communication transmission signals and data receiving and transmitting and is responsible for switching tasks in the burning process.
The signal output module 5 comprises an output port CON1, a fourth resistor R4 and a sixth resistor R6; the data input pin HTHI is connected to a first terminal of the sixth resistor R6 and a first terminal of the fourth resistor R4, a second terminal of the sixth resistor R6 and a drain of the NMOS transistor Q6 are connected to a first terminal of the output port CON1, and a second terminal of the fourth resistor R4 is connected to the digital SGND. The signal output module 5 is mainly used for outputting and burning data signals to the electrified terminal power supply single chip microcomputer.
The signal isolation module 2 comprises a first optical coupler U4 and a second optical coupler U5, the single chip microcomputer U2 comprises a first communication pin, the first communication pin comprises a first communication receiving pin RX and a first communication transmitting pin TX, the second end of the first optical coupler U4 is connected with the first communication receiving pin RX, and the first end of the second optical coupler U5 is connected with the first communication transmitting pin TX. The signal isolation module 2 plays a role in isolating signals, and because the optocouplers are in unidirectional transmission, unidirectional transmission of the signals can be realized, so that the input end and the output end are completely electrically isolated, the output signals have no influence on the input end, the anti-interference capability is strong, and the work is stable; the optical coupler is photoelectric, so that the service life is long, and the defect that a mechanical contact has the suction times is overcome.
The USB-to-TTL module 1 comprises a second communication pin, the second communication pin comprises a second communication receiving pin RXD and a second communication sending pin TXD, the second communication receiving pin RXD is connected with a second end of a second optical coupler U5, and the second communication sending pin TXD is connected with a fourth end of a first optical coupler U4. The USB-to-TTL module 1 is used for communicating signals which can be identified by a level conversion upper computer and a single chip microcomputer U2.
The signal isolation module 2 comprises a first resistor R1, a second resistor R2, a third resistor R3 and a fifth resistor R5, a third end of the first optical coupler U4 is connected with a digital ground SGND, a third end of the second optical coupler U5 is connected with a power ground GND, a second end of the first optical coupler U4 is connected with a regulated power supply 3.3V through the third resistor R3, a first end of the second optical coupler U5 is connected with the regulated power supply 3.3V through the fifth resistor R5, a first end of the first optical coupler U4 is connected with a system power supply VCC through the second resistor R2, and a second end of the second optical coupler U5 is connected with the system power supply VCC through the first resistor R1.
Further, the USB to TTL module 1 includes a clock circuit, a conversion chip U3 and a USB interface, the conversion chip U3 includes a clock pin, a U3 power pin, a U3 ground pin and a differential signal pin, the clock circuit is connected to the clock pin, the U3 power pin is connected to the system power VCC, the U3 ground pin is connected to the power ground GND, and the differential signal pin is connected to the USB interface.
Further, the USB to TTL module 1 further includes a plurality of capacitors disposed between the system power VCC and the power ground GND for filtering out noise. Specifically, the present embodiment provides a fourth capacitor C4 and a fifth capacitor C5, wherein a first end of the fourth capacitor C4 and a first end of the fifth capacitor C5 are both connected to the system power VCC, and a second end of the fourth capacitor C4 and a second end of the fifth capacitor C5 are both connected to the power ground GND.
The on-line power burning circuit further comprises a voice reminding module 7, a key module 8 and an indicator light module 9 which are electrically connected with the single chip microcomputer U2. Specifically, singlechip U2 includes pronunciation pin, button pin and two instruction pins, and pronunciation warning module 7 is connected with the pronunciation pin, and button module 8 is connected with the button pin, and pilot lamp module 9 is connected with the instruction pin.
Furthermore, the voice prompt module 7 includes a voice piece SPK and a seventh resistor R7, wherein a first terminal of the voice piece SPK is connected to the digital ground SGND, a second terminal of the voice piece SPK is connected to a first terminal of the seventh resistor R7, and a second terminal of the seventh resistor R7 is connected to the voice pin. The voice reminding module 7 is mainly used for voice reminding in the burning process.
The KEY module 8 includes a touch KEY and an eighth resistor R8, a first end of the touch KEY is connected to the digital SGND, a second end of the touch KEY is connected to a first end of the eighth resistor R8, and a second end of the eighth resistor R8 is connected to the KEY pin. The key module 8 is mainly used for controlling, switching on and off or resetting the burning process.
The indicator lamp module 9 comprises a ninth resistor R9 and a first tenth resistor R10, an LED1 and an LED2, wherein the anode of the LED2 is connected with the first end of the ninth resistor R9, the anode of the LED1 is connected with the first end of the first tenth resistor R10, the second end of the ninth resistor R9 and the second end of the first tenth resistor R10 are correspondingly connected with two indicator pins, and the cathodes of the LED1 and the LED2 are connected with a digital SGND. The indicator light module 9 is mainly used for indicating the light during the burning process, and is beneficial to judging whether the power is normally on and the burning work is normally done.
The utility model provides an online power burns record circuit's theory of operation: the USB-TTL conversion module 1 converts the level of the upper computer into signals which can be identified by both the single chip microcomputer U2 in the single chip microcomputer control module 3 for communication, the signal isolation module 2 is favorable for unidirectional transmission of communication in the burning process, the transceiving switching module 4 is responsible for controlling communication transmission signals and data transceiving and switching tasks in the burning process, and the signal output module 5 outputs and burns data signals to the electrified terminal power supply single chip microcomputer through the output port CON 1.
It should be understood that the digital ground SGND and the power ground GND in the present invention are prior art means in the field, and both refer to the reference ground substantially, and the reference ground is designed separately because the burning process is considered separately, and the data signal is easily interfered by high frequency such as the power supply. The system power VCC and the external voltage 12V are prior art and will not be described herein.
The above description is only intended to illustrate the technical solution of the present invention, and not to limit it; 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 or all of the technical features may be equivalently replaced; all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings of the utility model, or the direct or indirect application in other related technical fields, are included in the patent protection scope of the utility model.
Claims (10)
1. An on-line power burning circuit is used for an upper computer to burn data signals to a powered terminal power singlechip, and is characterized in that: the system comprises a signal isolation module, a single-chip microcomputer control module, a transceiving switching module and a signal output module;
the signal isolation module is connected with the single-chip microcomputer control module and used for unidirectional communication transmission signals;
the singlechip control module is respectively connected with the signal isolation module and the transceiving switching module and is used for controlling communication transmission signals and data transceiving;
the receiving and transmitting switching module is respectively connected with the single chip microcomputer control module and the signal output module and is used for carrying out data receiving and transmitting switching during burning;
and the signal output module is respectively connected with the receiving and transmitting switching module and the terminal power supply singlechip and is used for outputting and burning data signals.
2. The on-line power burning circuit of claim 1, wherein: the circuit further comprises a power supply module, wherein the power supply module comprises a voltage stabilizing chip, and the voltage stabilizing chip comprises a voltage input end, a voltage output end and a grounding end; the single chip microcomputer control module comprises a single chip microcomputer, and the single chip microcomputer comprises a U2 power supply pin and a U2 grounding pin; the voltage input end is connected with an external voltage of 12V, the voltage output end is connected with the U2 power supply pin, and the grounding end and the U2 grounding pin are both connected with a digital ground.
3. The on-line power burning circuit of claim 2, wherein: the single chip microcomputer comprises a data pin, and the data pin comprises a data output pin;
the transceiving switching module comprises an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, an NPN amplifying tube and an NMOS tube, wherein a first end of the eleventh resistor is connected to the data output pin HTHO, a second end of the eleventh resistor is connected to a base of the NPN amplifying tube, an emitter of the NPN amplifying tube is connected to a first end of the thirteenth resistor, a gate of the NMOS tube and a first end of the twelfth resistor, a source of the NMOS tube is connected to a first end of the fourteenth resistor, a collector of the NPN amplifying tube, a second end of the thirteenth resistor R13 and a second end of the fourteenth resistor R14 are all connected to a digital ground, and a second end of the twelfth resistor is connected to a regulated power supply.
4. The on-line power burning circuit of claim 3, wherein: the data pin comprises a data input pin, and the signal output module comprises an output port, a fourth resistor and a sixth resistor; the data input pin is connected with a first end of a sixth resistor and a first end of a fourth resistor, a second end of the sixth resistor and a drain electrode of the NMOS tube are connected with a first end of the output port, and a second end of the fourth resistor is connected with a digital ground.
5. The on-line power burning circuit of claim 3, wherein: the circuit further comprises a USB-to-TTL module, wherein the USB-to-TTL module is respectively connected with the upper computer and the signal isolation module and is used for communicating signals which can be identified by level conversion.
6. The on-line power burning circuit of claim 5, wherein: the signal isolation module comprises a first optical coupler and a second optical coupler, the single chip microcomputer comprises a first communication pin, the first communication pin comprises a first communication receiving pin and a first communication sending pin, the second end of the first optical coupler is connected with the first communication receiving pin, and the first end of the second optical coupler is connected with the first communication sending pin.
7. The on-line power burning circuit of claim 6, wherein: the USB-to-TTL module comprises a second communication pin, the second communication pin comprises a second communication receiving pin and a second communication sending pin, the second communication receiving pin is connected with a second end of the second optical coupler, and the second communication sending pin is connected with a fourth end of the first optical coupler.
8. The on-line power burning circuit of claim 7, wherein: the signal isolation module comprises a first resistor, a second resistor, a third resistor and a fifth resistor, the third end of the first optical coupler is connected with a digital ground, the third end of the second optical coupler is connected with a power ground, the second end of the first optical coupler is connected with a voltage-stabilized power supply through the third resistor, the first end of the second optical coupler is connected with the voltage-stabilized power supply through the fifth resistor R5, the first end of the first optical coupler is connected with a system power supply through the second resistor, and the second end of the second optical coupler is connected with the system power supply through the first resistor.
9. The on-line power burning circuit of claim 5, wherein: the USB-to-TTL module comprises a clock circuit, a conversion chip and a USB interface, wherein the conversion chip comprises a clock pin, a U3 power pin, a U3 grounding pin and a differential signal pin, the clock circuit is connected with the clock pin, the U3 power pin is connected with a system power supply, the U3 grounding pin is connected with a power ground, and the differential signal pin is connected with the USB interface.
10. The on-line power burning circuit of claim 2, wherein: the circuit further comprises a voice reminding module, a key module and an indicator light module which are electrically connected with the single chip microcomputer.
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| CN202023308441.8U CN214011769U (en) | 2020-12-31 | 2020-12-31 | On-line power burning circuit |
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| CN202023308441.8U CN214011769U (en) | 2020-12-31 | 2020-12-31 | On-line power burning circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114895612A (en) * | 2022-07-11 | 2022-08-12 | 深圳市杰美康机电有限公司 | Simulation system and simulation control method for DSP chip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114895612A (en) * | 2022-07-11 | 2022-08-12 | 深圳市杰美康机电有限公司 | Simulation system and simulation control method for DSP chip |
| CN114895612B (en) * | 2022-07-11 | 2022-09-27 | 深圳市杰美康机电有限公司 | Simulation system for DSP chip |
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