CN209729226U - A kind of multi-functional element circuit intelligent measurement maintenance training system - Google Patents
A kind of multi-functional element circuit intelligent measurement maintenance training system Download PDFInfo
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- CN209729226U CN209729226U CN201920161870.5U CN201920161870U CN209729226U CN 209729226 U CN209729226 U CN 209729226U CN 201920161870 U CN201920161870 U CN 201920161870U CN 209729226 U CN209729226 U CN 209729226U
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Abstract
The utility model discloses a kind of multi-functional element circuit intelligent measurement maintenance training systems, belong to hardware detection maintenance control technology field.Structure includes: host computer, control host and element circuit module；Host computer, control host and element circuit module are sequentially connected.The utility model controls host and uses dual power supply, power supply adaptor one and power supply adaptor two simulate desk-top computer power supply formula and notebook-type computer power supply formula respectively, it is connected respectively with host computer and element circuit module to be detected by USB interface and comprehensive transmission line interface, it directly controls element circuit module and powers to it and detect, the circuit diagram and PCB pictorial diagram of the automatic display unit circuit of host computer.This system can automatically detect a variety of unit modules, and function is more and intelligent, be very suitable to the teaching of mainboard Measuring error, whole process is convenient and efficient, funny and relaxed.
Description
Technical field
The utility model belongs to hardware detection maintenance technique field, and in particular to a kind of multi-functional element circuit intelligent measurement
Maintenance training system.
Background technique
With popularizing for computer, the demand to computer motherboard detection and maintenance also increasingly increases.Mainboard Measuring error
Experience system, main function be the student for vocational technical universities and colleges and be engaged in electronic product hardware detection maintenance beginner mention
It is to be engaged in the beginner of electronic product maintenance industry preferably to learn to set for Skill Development, circuit analysis and practical operative ability
It is standby.Currently, traditional experience system, the inadequate modularization of test object, rational learning low efficiency control the single not intelligence of host function
Energy.
Summary of the invention
The purpose of this utility model is that: it solves traditional Practical training equipment and has a single function not intelligent, the low problem of learning efficiency,
A kind of multi-functional element circuit intelligent measurement maintenance training system is provided.
The technical solution adopted in the utility model is as follows:
A kind of multi-functional element circuit intelligent measurement maintenance training system, it is characterised in that: include: host computer, control master
Machine and element circuit module；Host computer is connect by USB line with control host, and control host passes through comprehensive transmission line and unit electricity
The connection of road module；
Specifically, the element circuit module be according to computer motherboard it is multiple it is main it is circuit it is whole be that zero is not fabricated to
The element circuit with single circuit function；
The control master machine control unit circuit module simultaneously gives element circuit module for power supply, and acquires, handles and transmit and is single
Voltage signal and frequency signal on first circuit；
Different units circuit module is stored in advance in the testing result of the host computer display control host transmission, host computer
Circuit diagram and PCB pictorial diagram.
Further, the control main machine structure includes: control circuit board；
Further, the control circuit board includes: switching power circuit, power circuit one, power circuit two, single-chip microcontroller
Circuit, ADC sample circuit, interface circuit, USB turn UART circuitry and frequency detection circuit；
Switching power circuit provides voltage for entire control circuit；
Power circuit one simulates laptop powered operation mode, controls the power supply of each circuit, turns UART circuitry for USB
It powers and turns UART circuitry with USB and carry out data transmission；
Power circuit two simulates desktop computer powered operation mode, and the voltage that switching power circuit inputs is converted to difference
Voltage value is output to interface circuit；
Interface circuit provides different operating voltages under the control of single chip circuit for different element circuit modules, control
The on-off of element circuit upper switch signal processed, and information of voltage and frequency signal on transmission unit circuit；
Analog signal progress operation amplifier is converted into number after the analog signal of ADC sample circuit receiving interface circuit transmission
Word signal is transferred to single chip circuit；
Frequency detection circuit is transmitted to single chip circuit by the frequency information in interface circuit detection cell circuit；
Single chip circuit receives the digital voltage signal of ADC sample circuit and the frequency signal of frequency detection circuit, carries out
Processing, will treated that result is transferred to USB turns UART circuitry,
USB turns the USB module that the signal that single chip circuit exports is transmitted to power circuit one by UART circuitry.
Further, the power circuit one mainly includes low-voltage power connector J101, relay K101, voltage adjusting
Device U101, voltage regulator U102 and USB module P101；
The positive port low-voltage power connector J101 connects 20V, low-voltage power connector J101 negative terminal mouth ground connection, and voltage is adjusted
The end IN of device U101 connects the positive port low-voltage power connector J101 after power supply indicator, while voltage regulator U101
The end IN is grounded after being separately connected capacitor C101 and capacitor C102, and the OUT terminal of voltage regulator U101 is with voltage regulator U102's
The end IN connection after connect with relay K101, relay K101 respectively with two PC-ON of power circuit and interface circuit PW-ON phase
Even, while the OUT terminal of voltage regulator U101 is grounded after power supply indicator, and the end IN of voltage regulator U102 is separately connected
Be grounded after capacitor C103 and capacitor C104, the OUT terminal of voltage regulator U102 through overcurrent fuse F102 respectively with capacitor C105 and
Be grounded after capacitor C106 connection, at the same the OUT terminal of voltage regulator U102 through overcurrent fuse F102 respectively with diode D102 and
Thermal protector F101 connection, diode D102 output end connect VCCUSB, and the thermal protector F101 other end is separately connected two-way hit
Wear diode D103, resistance R101 and VCC, the resistance R101 other end after Light-emitting diode LED 101 with two-way two pole of breakdown
The pipe D103 other end is connected and is grounded, and USB module VCC interface is followed by VCCUSB, the end D+ and the end D- point by diode D101
It is not connected to the end UD+ and the end UD- that USB turns UART circuitry.
Further, the power circuit two mainly can including voltage regulator U103, voltage regulator U104 and three ends
Levelling pressure adjuster U105；
Input voltage+12DC is separately connected capacitor C107 and capacitor C108 ground connection, and+12DC is defeated through overcurrent fuse F103 simultaneously
+ 12V out, input voltage -12DC are separately connected capacitor C109 and capacitor C110 ground connection, and -12DC is defeated through overcurrent fuse F104 simultaneously
The end Vin of -12V out, voltage regulator U103 are connect with+12V, while the end Vin of voltage regulator U103 is separately connected capacitor
C111 and capacitor C112 ground connection, the end Vout of voltage regulator U103 are separately connected capacitor C115 and capacitor C116 ground connection, voltage
The end Vin of the output of the end the Vout+5V, voltage regulator U104 of adjuster U103 are connect with -12V, while voltage regulator U104
The end Vin be separately connected capacitor C113 and capacitor C114 ground connection, the end Vout of voltage regulator U104 is separately connected capacitor C117
Be grounded with capacitor C118, the end the Vout output -5V of voltage regulator U104, the end Vin of three ends are adjustable positive pressure adjuster U105 with+
5V connection, while the end Vin of the adjustable positive pressure adjuster U105 in three ends is grounded by capacitor C119, three ends are adjustable positive pressure adjuster
The end ADJ of U105 is separately connected capacitor C120 and resistance R103 ground connection, and the end Vout of three ends are adjustable positive pressure adjuster U105 is passed through
Resistance R102 is connect with the end ADJ, while the end Vout of the adjustable positive pressure adjuster U105 in three ends is separately connected capacitor C121 and capacitor
The end Vout of C122 ground connection, three ends are adjustable positive pressure adjuster U105 exports 3.3V.
Further, the ADC sample circuit mainly includes sampling A/D chip U401 and operational amplification circuit；
The end VCC of sampling A/D chip U401 is connected to VCC, while the end VCC is grounded through capacitor C406, the end EOC, the end CLK, ADDR
End, the end DOUT andEnd is separately connected single chip circuit, and the end REF+ is connect through capacitor C407 with the end A9, and REF+ terminates VCC,
The end REF-, the end A10, the end A9, the end A8 and the end GND ground connection, A0~A7 terminate operational amplification circuit；
Operational amplification circuit is made of eight groups of same type amplifying circuits, and main includes double low power operational amplifiers, amplification
Operational amplifier output terminal connects sampling A/D chip U401 in circuit, simultaneously amplifies device output end and passes through resistance R401 and anti-phase input
End connection, amplifier inverting input terminal are grounded through resistance R405, and normal phase input end is through resistance R409 and interface circuit analog signal
Input interface connection, positive supply terminate VCC, negative power end ground connection.
Further, the interface circuit mainly includes Interface Terminal P601；
Input voltage 20V is sequentially connected 1 end, 3 ends and 5 after fuse F601 and diode D601 with Interface Terminal P601
End connection, 7 ends of Interface Terminal P601 connect VCC, and 9 ends connect 3.3V, 13 ends and 15 connection PW-ON, 19 ends and 21 with 11 ends
Hold connection -12V, 25 ends connect+12V with 27 ends, and 31 ends connect -5V with 33 ends, and 37 ends connect+5V with 39 ends, 17 ends, 23 ends,
29 ends and 35 ends ground connection, 2 ends, 4 ends, 6 ends, 8 ends and 10 ends are that tested drafting board address input end is connect with single chip circuit, 12
End, 14 ends, 16 ends, 18 ends, 20 ends, 22 ends, 24 ends and 26 ends are to be detected plate input end of analog signal and ADC sample circuit company
It connects, 28 ends and 30 ends are that tested drafting board serial communication interface is connect with single chip circuit, and 32 ends are that tested drafting board frequency signal connects
Mouth is connect with frequency detection circuit, and 34 ends, 36 ends, 38 ends and 40 ends are to be detected switching plate signaling interface and single chip circuit company
It connects.
Further, it includes conversion chip U301 that the USB, which turns UART circuitry mainly,；
The end VCC of conversion chip U301 is separately connected capacitor C304 and capacitor C305 is followed by GND1, at the same the end VCC with
The GND of VCCUSB connection, chip U301 terminates GND1, and the end TXD and the end RXD connect single-chip microcontroller through resistance R301 and resistance R302 respectively
Circuit, the end V3 meet GND1 through capacitor C301, and the end UD+ and UD- meets the USB of power circuit one through resistance R303 and resistance R304 respectively
Module, the end XI and XO meet GND1 through capacitor C302 and capacitor C303 respectively, and the end XI is connected with the end XO by crystal oscillator Y301,
The GND1 is connect through resistance R305 with ground GND.
Further, the frequency detection circuit mainly includes frequency detecting chip U501；
Input voltage VCC is connected respectively to the end VCC and the end RST of frequency detecting chip U501, while input voltage VCC is passed through
Cross the end THR and the end TRIG that resistance R530 is connected to frequency detecting chip U501, frequency detected signal Clock input the end THR and
The end TRIG, while Clock input terminal is grounded through resistance R531, the end CVOLT is connect through capacitor C501 with the end GND, the end GND ground connection,
OUT terminal is connect with single chip circuit.
Further, the single chip circuit further includes reset circuit and functional indicator light circuit；
Reset circuit: accessing the end single-chip microcontroller RESET after VCC connection reset key, the end RESET is grounded through resistance R201, VCC warp
Capacitor C203 ground connection；
Functional indicator light circuit: VCC accesses the end single-chip microcontroller P05 after resistance R202 connection light emitting diode D4, and VCC is through electricity
The end single-chip microcontroller P06 is accessed after hindering R203 connection light emitting diode D3.
Further, the control main machine structure further include: aluminum alloy frame, power supply adaptor one, power supply adaptor two,
Power input interface, USB interface, comprehensive transmission line interface；
The input terminal of power supply adaptor one and power supply adaptor two is connected with power input interface, and output end is connected respectively to
Control circuit board, USB interface, comprehensive transmission line interface are integrated in control circuit board, and each component is installed in aluminum alloy frame
On；
Preferably, the power supply adaptor one and power supply adaptor two simulate respectively laptop powered operation mode and
Desktop computer powered operation mode；The aluminum alloy frame bottom plate has heat release hole, has preformed hole on side panel；The USB interface
Belong to the USB1 and USB2 of same interface for two, one of them is spare interface.
Power on, power supply adaptor one and power supply adaptor two are powered to host control circuit board simultaneously, and host enters
Active standby state；Element circuit module is connect by comprehensive transmission line interface with host with comprehensive transmission line, host control
Circuit board active detecting identifies that different element circuit modules provides different voltages power supply, control circuit board to element circuit module
The acquisition and processing that voltage signal and frequency signal data are completed in detection are controlled to element circuit, it can by USB connection host computer
It will test result and be uploaded to host computer, while the element circuit is shown in host computer according to the element circuit module of identification automatically
Circuit diagram and PCB pictorial diagram.
By adopting the above-described technical solution, the beneficial effects of the utility model are:
1. a kind of multi-functional element circuit intelligent measurement maintenance training system has the function of single circuit using control detection
Element circuit, facilitate instructor to impart knowledge to students, allow learner more efficiently learn understand electric circuit knowledge, grasp Measuring error skill
Energy；
2. the utility model uses dual power supply adapter, laptop powered operation mode and desktop computer are simulated respectively
Powered operation mode is able to detect a variety of element circuit modules with different circuit functions, realizes multifunction teaching；
3. the control circuit board active detecting of the utility model control host identifies different element circuit modules to unit
Circuit module provides different voltages power supply, shows testing result and element circuit schematic diagram and PCB pictorial diagram in host computer, real
Instruction process is funny and relaxed, is more convenient, more intelligent；
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings, in which:
Fig. 1 is the block diagram of the utility model；
Fig. 2 is switching power circuit figure；
Fig. 3 is one circuit diagram of power circuit；
Fig. 4 is two circuit diagram of power circuit；
Fig. 5 is single chip circuit figure；
Fig. 6 is ADC sample circuit figure；
Fig. 7 is interface circuit figure；
Fig. 8 is that USB turns UART circuitry figure；
Fig. 9 is frequency detection circuit figure.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model, i.e., the described embodiments are only a part of the embodiments of the utility model,
Instead of all the embodiments.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be with each
Different configurations is planted to arrange and design.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Reality based on the utility model
Apply example, those skilled in the art's every other embodiment obtained without making creative work belongs to
The range of the utility model protection.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
A kind of multi-functional element circuit intelligent measurement maintenance training system, as shown in Figure 1:
Including host computer, control host and element circuit module, host computer is connected with control host by USB line, is controlled
Host is connected with element circuit mould by comprehensive transmission line；
Element circuit module be according to computer motherboard it is multiple it is main it is circuit it is whole be that having of not being fabricated to of zero is single
The element circuit of circuit function；
Control master machine control unit circuit module simultaneously give element circuit module for power supply, and acquire, handle and transmission unit electricity
The voltage signal and frequency signal of road；
The circuit of different units circuit module is stored in advance in the testing result of host computer display control host transmission, host computer
Schematic diagram and PCB pictorial diagram.
Controlling main machine structure includes: aluminum alloy frame, power supply adaptor one, power supply adaptor two, control circuit board, power supply
Input interface, USB interface, comprehensive transmission line interface；
Power supply adaptor one and power supply adaptor two simulate laptop powered operation mode respectively and desktop computer supplies
Electric working method, aluminum alloy frame bottom plate have heat release hole, have preformed hole on side panel；USB interface is two and belongs to same interface
USB1 and USB2, one of them is spare interface；
The input terminal of power supply adaptor one and power supply adaptor two is connected with power input interface, and output end is connected respectively to
Control circuit board, USB interface, comprehensive transmission line interface are integrated in control circuit board, and each component is installed in aluminum alloy frame
On.
Control circuit board includes: switching power circuit, power circuit one, power circuit two, single chip circuit, ADC sampling
Circuit, interface circuit, USB turn UART circuitry and frequency detection circuit；
Switching power circuit is connect with power circuit one and power circuit two, and switching power circuit passes through power input interface
220V alternating current is inputted, exports DC20V and DC ± 12V voltage respectively to power supply by power supply adaptor one and power supply adaptor two
Circuit one and power circuit two provide operating voltage for entire control circuit；
Power circuit one connects single chip circuit, ADC sample circuit, interface circuit, USB and turns UART circuitry and frequency detecting
Circuit, power circuit one simulate laptop powered operation mode, control the power supply of each circuit, turn UART circuitry confession for USB
Electricity simultaneously turns UART circuitry with USB and carries out data transmission；
Power circuit two is connect with interface circuit, and power circuit two simulates desktop computer powered operation mode, by switch electricity
DC ± 12V voltage of source circuit input is converted to+12V, -12V ,+5V, -5V and 3.3V voltage output to interface circuit；
Interface circuit connects single chip circuit, ADC sample circuit and frequency detection circuit, and single chip circuit passes through interface electricity
The address input interface on road identifies different element circuit modules, and different operating voltages, and single-chip microcontroller are provided by interface circuit
Circuit passes through the on-off of switching signal interface control unit circuit upper switch signal, passes through analog input interface transmission unit
For information of voltage on circuit to ADC sample circuit, frequency detection circuit passes through the frequency in frequency detecting interface detection cell circuit
Rate information；
ADC sample circuit connects single chip circuit with frequency detection circuit, ADC sample circuit receiving interface circuit transmission
Analog signal progress operation amplifier is converted into digital data transmission to single chip circuit after analog signal, frequency detection circuit is logical
It crosses interface circuit and the frequency information on element circuit is transmitted to single chip circuit；
Single chip circuit connection USB turns UART circuitry, single chip circuit receive ADC sample circuit digital voltage signal and
The frequency signal of frequency detection circuit is handled, will treated that result is transferred to USB turns UART circuitry；
USB turns the USB module of data signal transmission that UART circuitry exports single chip circuit to power circuit one.
Embodiment:
As shown in Figure 3: power circuit one, low-voltage power connector J101 use 20V power connector, and relay K101 is adopted
With 12VDC relay, voltage regulator U101 model MC7812BT, voltage regulator U102 model MC7805BT；
The positive port low-voltage power connector J101 connects 20V, low-voltage power connector J101 negative terminal mouth ground connection, and voltage is adjusted
The end IN of device U101 connects the positive port low-voltage power connector J101 after power supply indicator, while voltage regulator U101
The end IN is grounded after being separately connected capacitor C101 and capacitor C102, and the OUT terminal of voltage regulator U101 is with voltage regulator U102's
The end IN connection after connect with relay K101, relay K101 respectively with two PC-ON of power circuit and interface circuit PW-ON phase
Even, while the OUT terminal of voltage regulator U101 is grounded after power supply indicator, and the end IN of voltage regulator U102 is separately connected
Be grounded after capacitor C103 and capacitor C104, the OUT terminal of voltage regulator U102 through overcurrent fuse F102 respectively with capacitor C105 and
Be grounded after capacitor C106 connection, at the same the OUT terminal of voltage regulator U102 through overcurrent fuse F102 respectively with diode D102 and
Thermal protector F101 connection, diode D102 output end connect VCCUSB, and the thermal protector F101 other end is separately connected two-way hit
Wear diode D103, resistance R101 and VCC, the resistance R101 other end after Light-emitting diode LED 101 with two-way two pole of breakdown
The pipe D103 other end is connected and is grounded, and USB module VCC interface is followed by VCCUSB, the end D+ and the end D- point by diode D101
It is not connected to the end the UD+ end UD- that USB turns UART circuitry.
It is as shown in Figure 4: power circuit two, voltage regulator U103 model MC7805BT, voltage regulator U104 model
For MC7905BT, three ends are adjustable positive pressure adjuster U105 model LM1117-adj；
Input voltage+12DC is separately connected capacitor C107 and capacitor C108 ground connection, and+12DC is defeated through overcurrent fuse F103 simultaneously
+ 12V out, input voltage -12DC are separately connected capacitor C109 and capacitor C110 ground connection, and -12DC is defeated through overcurrent fuse F104 simultaneously
The end Vin of -12V out, voltage regulator U103 are connect with+12V, while the end Vin of voltage regulator U103 is separately connected capacitor
C111 and capacitor C112 ground connection, the end Vout of voltage regulator U103 are separately connected capacitor C115 and capacitor C116 ground connection, voltage
The end Vin of the output of the end the Vout+5V, voltage regulator U104 of adjuster U103 are connect with -12V, while voltage regulator U104
The end Vin be separately connected capacitor C113 and capacitor C114 ground connection, the end Vout of voltage regulator U104 is separately connected capacitor C117
Be grounded with capacitor C118, the end the Vout output -5V of voltage regulator U104, the end Vin of three ends are adjustable positive pressure adjuster U105 with+
5V connection, while the end Vin of the adjustable positive pressure adjuster U105 in three ends is grounded by capacitor C119, three ends are adjustable positive pressure adjuster
The end ADJ of U105 is separately connected capacitor C120 and resistance R103 ground connection, and the end Vout of three ends are adjustable positive pressure adjuster U105 is passed through
Resistance R102 is connect with the end ADJ, while the end Vout of the adjustable positive pressure adjuster U105 in three ends is separately connected capacitor C121 and capacitor
The end Vout of C122 ground connection, three ends are adjustable positive pressure adjuster U105 exports 3.3V.
It is as shown in Figure 6: ADC sample circuit, sampling A/D chip U401 model TLC1543；
The end VCC of sampling A/D chip U401 is connected to VCC, while the end VCC is grounded through capacitor C406, the end EOC, the end CLK, ADDR
End, the end DOUT andEnd is separately connected single chip circuit (17), and the end REF+ is connect through capacitor C407 with the end A9, REF+ termination
The end VCC, REF-, the end A10, the end A9, the end A8 and the end GND ground connection, A0~A7 terminate operational amplification circuit；
Operational amplifier model LM258H, operational amplifier output terminal connects sampling A/D chip U401 in amplifying circuit, together
When amplifier out connect with inverting input terminal by resistance R401, amplifier inverting input terminal is grounded through resistance R405, just
Phase input terminal is connect through resistance R409 with interface circuit analog input interface, and positive supply terminates VCC, negative power end ground connection.
It is as shown in Figure 7: interface circuit, Interface Terminal P601 model 20X2H；
Input voltage 20V is sequentially connected 1 end, 3 ends and 5 after fuse F601 and diode D601 with Interface Terminal P601
End connection, 7 ends of Interface Terminal P601 connect VCC, and 9 ends connect 3.3V, 13 ends and 15 connection PW-ON, 19 ends and 21 with 11 ends
Hold connection -12V, 25 ends connect+12V with 27 ends, and 31 ends connect -5V with 33 ends, and 37 ends connect+5V with 39 ends, 17 ends, 23 ends,
29 ends and 35 ends ground connection, 2 ends, 4 ends, 6 ends, 8 ends and 10 ends are that tested drafting board address input end is connect with single chip circuit 17,12
End, 14 ends, 16 ends, 18 ends, 20 ends, 22 ends, 24 ends and 26 ends are to be detected plate input end of analog signal and ADC sample circuit company
It connects, 28 ends and 30 ends are that tested drafting board serial communication interface is connect with single chip circuit, and 32 ends are that tested drafting board frequency signal connects
Mouth is connect with frequency detection circuit, and 34 ends, 36 ends, 38 ends and 40 ends are to be detected switching plate signaling interface and single chip circuit company
It connects.
As shown in Figure 8: USB turns UART circuitry, conversion chip U301 model CH340G；
The end VCC of conversion chip U301 is separately connected capacitor C304 and capacitor C305 is followed by GND1, at the same the end VCC with
The GND of VCCUSB connection, chip U301 terminates GND1, and the end TXD and the end RXD connect single-chip microcontroller through resistance R301 and resistance R302 respectively
Circuit, the end V3 meet GND1 through capacitor C301, and the end UD+ and UD- meets the USB of power circuit one through resistance R303 and resistance R304 respectively
Module, the end XI and XO meet GND1 through capacitor C302 and capacitor C303 respectively, and the end XI is connected with the end XO by crystal oscillator Y301,
The GND1 is connect through resistance R305 with ground GND.
It is as shown in Figure 9: frequency detection circuit, frequency detecting chip U501 model NE555N；
Input voltage VCC is connected respectively to the end VCC and the end RST of frequency detecting chip U501, while input voltage VCC is passed through
Cross the end THR and the end TRIG that resistance R530 is connected to frequency detecting chip U501, frequency detected signal Clock input the end THR and
The end TRIG, while Clock input terminal is grounded through resistance R531, the end CVOLT is connect through capacitor C501 with the end GND, the end GND ground connection,
OUT terminal is connect with single chip circuit.
It is as shown in Figure 5: single chip circuit, single-chip microcontroller U201 model STC15F2K60S2_PDIP40；
Reset circuit: accessing the end single-chip microcontroller RESET after VCC connection reset key, the end RESET is grounded through resistance R201, VCC warp
Capacitor C203 ground connection；
Functional indicator light circuit: VCC accesses the end single-chip microcontroller P05 after resistance R202 connection light emitting diode D4, and VCC is through electricity
The end single-chip microcontroller P06 is accessed after hindering R203 connection light emitting diode D3.
With USB line connection host computer and control host, comprehensive transmission line connection control host and element circuit module are opened
Control host power supply, host control circuit board by the address input interface initiative recognition element circuit module on interface circuit,
And supply power for, by the switching signal on-off on switching signal interface control unit circuit, pass through analog input interface
Voltage signal and frequency signal on frequency signal interface acquisition and processing unit circuit, then will test data and pass through power supply
USB module on circuit 1 is transferred to host computer through USB line and shows, at the same show the element circuit module circuit diagram and
PCB pictorial diagram.
The above is only the preferred embodiment of the utility model only, the protection model being not intended to limit the utility model
It encloses, anyone skilled in the art any modification made within spirit of the present utility model and principle is equally replaced
It changes and improves, should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of multi-functional element circuit intelligent measurement maintenance training system, it is characterised in that: include: host computer, control host
With element circuit module；Host computer is connect by USB line with control host, and control host passes through comprehensive transmission line and element circuit
Module connection；
Element circuit module be according to computer motherboard it is multiple it is main it is circuit it is whole be zero be not fabricated to there is single circuit
The element circuit of function；
Control master machine control unit circuit module simultaneously gives element circuit module for power supply, and acquires, on processing and transmission unit circuit
Voltage signal and frequency signal；
The circuit theory of different units circuit module is stored in advance in the testing result of host computer display control host transmission, host computer
Figure and PCB pictorial diagram；
The control main machine structure includes: control circuit board；
The control circuit board includes:
Switching power circuit, for providing voltage for entire control circuit；
Power circuit one controls the power supply of each circuit, turns UART electricity for USB for simulating laptop powered operation mode
Road, which powers and turns UART circuitry with USB, to carry out data transmission；
Power circuit two is converted to the voltage that switching power circuit inputs not for simulating desktop computer powered operation mode
Interface circuit is output to voltage value；
Interface circuit, for providing different operating voltages under the control of single chip circuit for different element circuit modules,
The on-off of control unit circuit upper switch signal, and information of voltage and frequency signal on transmission unit circuit；
ADC sample circuit, for being converted to analog signal progress operation amplifier after the analog signal of receiving interface circuit transmission
Digital data transmission is to single chip circuit；
Frequency detection circuit, for being transmitted to single chip circuit by the frequency information in interface circuit detection cell circuit；
Single chip circuit is carried out for receiving the digital voltage signal of ADC sample circuit and the frequency signal of frequency detection circuit
Processing, will treated that result is transferred to USB turns UART circuitry；
USB turns UART circuitry, and the signal for exporting single chip circuit is transmitted to the USB module of power circuit one.
2. a kind of multi-functional element circuit intelligent measurement maintenance training system according to claim 1, it is characterised in that: institute
Stating power circuit one mainly includes low-voltage power connector J101, relay K101, voltage regulator U101, voltage regulator
U102 and USB module P101；
The positive port low-voltage power connector J101 connects 20V, low-voltage power connector J101 negative terminal mouth ground connection, voltage regulator
The end IN of U101 connects the positive port low-voltage power connector J101, while the IN of voltage regulator U101 after power supply indicator
End is grounded after being separately connected capacitor C101 and capacitor C102, the OUT terminal of voltage regulator U101 and the IN of voltage regulator U102
It being connect after the connection of end with relay K101, relay K101 is connected with power circuit two PC-ON and interface circuit PW-ON respectively,
The OUT terminal of voltage regulator U101 is grounded after power supply indicator simultaneously, and the end IN of voltage regulator U102 is separately connected electricity
Be grounded after holding C103 and capacitor C104, the OUT terminal of voltage regulator U102 through overcurrent fuse F102 respectively with capacitor C105 and electricity
Hold C106 connection after be grounded, while the OUT terminal of voltage regulator U102 through overcurrent fuse F102 respectively with diode D102 and heat
Protector F101 connection, diode D102 output end connect VCCUSB, and the thermal protector F101 other end is separately connected two-way breakdown
Diode D103, resistance R101 and VCC, the resistance R101 other end after Light-emitting diode LED 101 with diac
The D103 other end is connected and is grounded, and USB module VCC interface is followed by VCCUSB, the end D+ and the end D- difference by diode D101
It is connected to the end UD+ and the end UD- that USB turns UART circuitry.
3. a kind of multi-functional element circuit intelligent measurement maintenance training system according to claim 1, it is characterised in that: institute
Stating power circuit two mainly includes voltage regulator U103, voltage regulator U104 and the adjustable positive pressure adjuster U105 in three ends；
Input voltage+12DC be separately connected capacitor C107 and capacitor C108 ground connection, simultaneously+12DC through overcurrent fuse F103 output+
12V, input voltage -12DC are separately connected capacitor C109 and capacitor C110 ground connection, and -12DC is through overcurrent fuse F104 output-simultaneously
The end Vin of 12V, voltage regulator U103 are connect with+12V, while the end Vin of voltage regulator U103 is separately connected capacitor C111
It is grounded with capacitor C112, the end Vout of voltage regulator U103 is separately connected capacitor C115 and capacitor C116 ground connection, and voltage is adjusted
The end Vin of the output of the end the Vout+5V, voltage regulator U104 of device U103 are connect with -12V, while the Vin of voltage regulator U104
End is separately connected capacitor C113 and capacitor C114 ground connection, and the end Vout of voltage regulator U104 is separately connected capacitor C117 and capacitor
C118 ground connection, the end Vin of the end the Vout output -5V of voltage regulator U104, three ends are adjustable positive pressure adjuster U105 and+5V connect
It connects, while the end Vin of the adjustable positive pressure adjuster U105 in three ends is grounded by capacitor C119, three ends are adjustable positive pressure adjuster U105's
The end ADJ is separately connected capacitor C120 and resistance R103 ground connection, and resistance is passed through at the end Vout of three ends are adjustable positive pressure adjuster U105
R102 is connect with the end ADJ, while the end Vout of the adjustable positive pressure adjuster U105 in three ends is separately connected capacitor C121 and capacitor C122
The end Vout of ground connection, three ends are adjustable positive pressure adjuster U105 exports 3.3V.
4. a kind of multi-functional element circuit intelligent measurement maintenance training system according to claim 1, it is characterised in that: institute
Stating ADC sample circuit mainly includes sampling A/D chip U401 and operational amplification circuit；
The end VCC of sampling A/D chip U401 is connected to VCC, while the end VCC is grounded through capacitor C406, the end EOC, the end CLK, the end ADDR,
The end DOUT andEnd is separately connected single chip circuit, and the end REF+ is connect through capacitor C407 with the end A9, and REF+ terminates VCC, REF-
End, the end A10, the end A9, the end A8 and the end GND ground connection, A0~A7 terminate operational amplification circuit；
Operational amplification circuit is made of eight groups of same type amplifying circuits, and main includes double low power operational amplifiers, amplifying circuit
Middle operational amplifier output terminal connects sampling A/D chip U401, simultaneously amplifies device output end and is connected by resistance R401 and inverting input terminal
It connects, amplifier inverting input terminal is grounded through resistance R405, and normal phase input end is inputted through resistance R409 and interface circuit analog signal
Interface connection, positive supply terminate VCC, negative power end ground connection.
5. a kind of multi-functional element circuit intelligent measurement maintenance training system according to claim 1, it is characterised in that: institute
Stating interface circuit mainly includes Interface Terminal P601；
Input voltage 20V is sequentially connected 1 end, 3 ends and 5 the ends company after fuse F601 and diode D601 with Interface Terminal P601
It connects, 7 ends of Interface Terminal P601 connect VCC, and 9 ends connect 3.3V with 11 ends, and 13 ends and 15 connection PW-ON, 19 ends and 21 ends connect
- 12V is met, 25 ends connect+12V with 27 ends, and 31 ends connect -5V with 33 ends, and 37 ends connect+5V, 17 ends, 23 ends, 29 ends with 39 ends
It is grounded with 35 ends, 2 ends, 4 ends, 6 ends, 8 ends and 10 ends are that tested drafting board address input end is connect with single chip circuit, 12 ends, 14
End, 16 ends, 18 ends, 20 ends, 22 ends, 24 ends and 26 ends are to be detected plate input end of analog signal to connect with ADC sample circuit, 28
End and 30 ends are that tested drafting board serial communication interface is connect with single chip circuit, and 32 ends are tested drafting board frequency signal interface and frequency
The connection of rate detection circuit, 34 ends, 36 ends, 38 ends and 40 ends are to be detected switching plate signaling interface to connect with single chip circuit.
6. a kind of multi-functional element circuit intelligent measurement maintenance training system according to claim 1, it is characterised in that: institute
Stating USB to turn UART circuitry mainly includes conversion chip U301；
The end VCC of conversion chip U301 is separately connected capacitor C304 and capacitor C305 is followed by GND1, while the end VCC and VCCUSB connect
It connects, the GND of chip U301 terminates GND1, and the end TXD and the end RXD meet single chip circuit, V3 through resistance R301 and resistance R302 respectively
End meets GND1 through capacitor C301, and the end UD+ and UD- meets the USB module of power circuit one, XI through resistance R303 and resistance R304 respectively
GND1 is met through capacitor C302 and capacitor C303 respectively with the end XO, the end XI is connected with the end XO by crystal oscillator Y301, described
GND1 is connect through resistance R305 with ground GND.
7. a kind of multi-functional element circuit intelligent measurement maintenance training system according to claim 1, it is characterised in that: institute
Stating frequency detection circuit mainly includes frequency detecting chip U501；
Input voltage VCC is connected respectively to the end VCC and the end RST of frequency detecting chip U501, while input voltage VCC is by electricity
Resistance R530 is connected to the end THR and the end TRIG of frequency detecting chip U501, and frequency detected signal Clock inputs the end THR and TRIG
End, while Clock input terminal is grounded through resistance R531, the end CVOLT is connect through capacitor C501 with the end GND, the end GND ground connection, OUT terminal
It is connect with single chip circuit.
8. a kind of multi-functional element circuit intelligent measurement maintenance training system according to claim 1, it is characterised in that: institute
Stating single chip circuit further includes reset circuit and functional indicator light circuit；
Reset circuit: accessing the end single-chip microcontroller RESET after VCC connection reset key, the end RESET is grounded through resistance R201, and VCC is through capacitor
C203 ground connection；
Functional indicator light circuit: VCC accesses the end single-chip microcontroller P05 after resistance R202 connection light emitting diode D4, and VCC is through resistance
The end single-chip microcontroller P06 is accessed after R203 connection light emitting diode D3.
9. a kind of multi-functional element circuit intelligent measurement maintenance training system according to claim 1, it is characterised in that: institute
State control main machine structure further include: aluminum alloy frame, power supply adaptor one, power supply adaptor two, power input interface, USB connect
Mouth, comprehensive transmission line interface；
The input terminal of power supply adaptor one and power supply adaptor two is connected with power input interface, and output end is connected respectively to control
Circuit board, USB interface, comprehensive transmission line interface are integrated in control circuit board, and each component is installed on aluminum alloy frame；
The power supply adaptor one and power supply adaptor two simulate laptop powered operation mode respectively and desktop computer supplies
Electric working method；The aluminum alloy frame bottom plate has heat release hole, has preformed hole on side panel；The USB interface is two and belongs to
The USB1 and USB2 of same interface, one of them is spare interface.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111555800A (en) * | 2020-05-15 | 2020-08-18 | 北京光润通科技发展有限公司 | Gigabit dual-optical-port server adapter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555800A (en) * | 2020-05-15 | 2020-08-18 | 北京光润通科技发展有限公司 | Gigabit dual-optical-port server adapter |
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