CN205786830U - Circuit board assemblies testing circuit - Google Patents
Circuit board assemblies testing circuit Download PDFInfo
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- CN205786830U CN205786830U CN201620425802.1U CN201620425802U CN205786830U CN 205786830 U CN205786830 U CN 205786830U CN 201620425802 U CN201620425802 U CN 201620425802U CN 205786830 U CN205786830 U CN 205786830U
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Abstract
The open a kind of circuit board assemblies testing circuit of this utility model, this circuit board assemblies testing circuit includes amplifying circuit, filter circuit, governor circuit and display screen；Described amplifying circuit is for being amplified processing through the running voltage that current/voltage is converted to the running voltage of described circuit board assemblies or the operating current of described circuit board assemblies, and voltage signal is amplified in output；Described filter circuit is connected to described amplifying circuit, for described amplification voltage signal being filtered process and exporting；Described governor circuit is connected to described filter circuit, for filtered described amplification voltage signal is carried out analog digital conversion, and exports voltage data or the current data of described circuit board assemblies；Described display screen is connected to described governor circuit, for showing voltage data or the current data of described circuit board assemblies.This circuit board assemblies testing circuit simple in construction, carrying out circuit board assemblies, voltage and current detection process operation is simple, is conducive to improving detection efficiency.
Description
Technical field
This utility model relates to current/voltage field tests, particularly relates to a kind of circuit board assemblies testing circuit.
Background technology
Along with the fast development of intelligent robot industry, for ensureing the quality of intelligent robot product, need to be to producing
The products such as intelligent robot carry out product test.Tested by frock with the electricity of testing circuit board component during product test
Stream and voltage are particularly important test links, play an important role the quality ensureing intelligent robot product.Current intelligence
The electric current of robot circuit board assemblies and voltage detecting typically use the hand-held voltage of employee of manual detection mode, i.e. production line to examine
The voltage and current that measurement equipment and current detecting equipment detect each process product respectively is the most normal, and operating process step is numerous
Trivial, quality cannot ensure, efficiency is low and cost of labor is high.
Utility model content
The technical problems to be solved in the utility model is, uses manual detection mode to detect intelligent machine for prior art
The problem existed during voltage and current in the circuit board assemblies production process of device people, it is provided that a kind of circuit board assemblies detection electricity
Road.
This utility model solves its technical problem and be the technical scheme is that a kind of circuit board assemblies testing circuit, bag
Include amplifying circuit, filter circuit, governor circuit and display screen；
Described amplifying circuit is for electric to the running voltage of described circuit board assemblies or the work of described circuit board assemblies
Flowing through the running voltage that current/voltage is converted to be amplified processing, voltage signal is amplified in output；
Described filter circuit is connected to described amplifying circuit, is used for being filtered described amplification voltage signal processing and defeated
Go out；
Described governor circuit is connected to described filter circuit, for filtered described amplification voltage signal is carried out modulus
Conversion, and export voltage data or the current data of described circuit board assemblies；
Described display screen is connected to described governor circuit, for showing voltage data or the electric current number of described circuit board assemblies
According to.
Preferably, also include that current-to-voltage converting circuit, described current-to-voltage converting circuit are connected to described circuit board group
Between part and described amplifying circuit, for gathering the operating current of described circuit board assemblies, described operating current is changed into work
After making voltage, output is to described amplifying circuit.
Preferably, the protection pipe being arranged between described filter circuit and described governor circuit is also included.
Preferably, described protection pipe includes the first diode and second diode of series connection；Described first diode is just
Pole is connected with described filter circuit, and negative pole is connected with the positive pole of described second diode；The negative pole of described second diode and institute
The supply voltage stating governor circuit is connected；The negative pole of described first diode and the positive pole of described second diode are connected to described
Governor circuit.
Preferably, described filter circuit includes filter resistance and filter capacitor；Described filter resistance one end and described amplification
Circuit is connected, and the other end is connected with described governor circuit；Described filter resistance and described master control are accessed in described filter capacitor one end
Between circuit, other end ground connection；One end of described filter capacitor ground connection is connected with the positive pole of described first diode.
Preferably, described amplifying circuit includes operational amplifier, the first resistance, the second resistance, the 3rd resistance and the 4th electricity
Resistance；One end of described first resistance is connected with described circuit board assemblies, the other end and the normal phase input end of described operational amplifier
It is connected；The inverting input of described operational amplifier passes through described second resistance eutral grounding；Described 3rd resistance is connected to described fortune
Calculate between outfan and the inverting input of amplifier；Described 4th resistance one end and the first resistance and described operational amplifier
Normal phase input end be connected, other end ground connection.
Preferably, also include that divider resistance, described divider resistance are connected to described circuit board assemblies and described first resistance
Between.
Preferably, described amplifying circuit includes operational amplifier, the first resistance, the second resistance, the 3rd resistance and the 4th electricity
Resistance；One end of described first resistance is connected to described current-to-voltage converting circuit, and the other end is connected to described operational amplifier
Normal phase input end；The inverting input of described operational amplifier passes through described second resistance eutral grounding；Described 3rd resistance is connected to
Between outfan and the inverting input of described operational amplifier；Described 4th resistance one end is put with the first resistance and described computing
The normal phase input end of big device is connected, other end ground connection.
Preferably, described current-to-voltage converting circuit include test pin, grafting pin, the 5th resistance, the 6th resistance,
One electric capacity, the second electric capacity, the 3rd electric capacity and phasmajector；Described test pin and described grafting pin and described circuit board assemblies phase
Even；First outfan of described grafting pin is connected with positive source and the phasmajector of described circuit board assemblies, described insertion pipe
Second outfan of foot is connected with described amplifying circuit；Between described first outfan and the second outfan, parallel connection is provided with the first electricity
Hold and the second electric capacity；Described second outfan the 5th resistance in parallel and the 6th resistance are connected with described amplifying circuit；Institute
State the 3rd electric capacity and described 5th resistance and described 6th resistor coupled in parallel, and one end ground connection.
Preferably, described circuit board assemblies is the printed circuit board assembly of intelligent robot.
This utility model compared with prior art has the advantage that circuit board assemblies provided by the utility model detects
In circuit, amplifying circuit is amplified place to the voltage signal that running voltage or the operating current of circuit board assemblies are converted to
After reason, output amplifies voltage signal to filter circuit；Filter circuit exports to master control amplifying after voltage signal is filtered processing
Circuit；Governor circuit carries out analog digital conversion, with voltage data or the current values of output circuit board component, display screen display circuit
The voltage data of board component or current values；So that the running voltage of testing circuit board component or operating current are the most qualified, with
Ensure the quality of product.It is to be appreciated that this circuit board assemblies testing circuit simple in construction, circuit board assemblies is being carried out voltage
Simple with current detecting process operation, be conducive to improving detection efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is circuit theory diagrams of circuit board assemblies testing circuit in this utility model embodiment 1.
Fig. 2 is another circuit theory diagrams of circuit board assemblies testing circuit in this utility model embodiment 2.
10, current-to-voltage converting circuit；TP11, test pin；J9, grafting pin；R11, the 5th resistance；R12, the 6th electricity
Resistance；C11, the first electric capacity；C12, the second electric capacity；C13, the 3rd electric capacity；20, amplifying circuit；U21, operational amplifier；R21, first
Resistance；R22, the second resistance；R23, tertiary circuit；R24, the 4th resistance；R25, divider resistance；30, filter circuit；R31, filtering
Resistance；C31, filter capacitor；40, governor circuit；50, display screen；60, circuit board assemblies；D41, protection pipe.
Detailed description of the invention
In order to be more clearly understood from technical characteristic of the present utility model, purpose and effect, now comparison accompanying drawing is detailed
Detailed description of the invention of the present utility model is described.
Circuit board assemblies testing circuit provided by the utility model is for detecting the circuit board assemblies 60 of intelligent robot
Operating current or running voltage whether normal, to ensure the product quality of intelligent robot.Wherein, circuit board assemblies 60 refers to
The PCBA board of intelligent robot (such as model plane machine), wherein, PCBA (Printed Circuit BoardAssembly) plate refers to
Printed circuit board assembly, refer to printed circuit board containing components and parts (i.e. Printed Circuit Board, is called for short pcb board,
Without components and parts).
Embodiment 1
Fig. 1 illustrates in the present embodiment for detecting the circuit of the running voltage of the testing circuit board component 60 of intelligent robot
The circuit theory diagrams of board component testing circuit.As it is shown in figure 1, this circuit board assemblies testing circuit includes and circuit board assemblies 60 phase
Amplifying circuit 20 even, the filter circuit 30 being connected with amplifying circuit 20, the connected governor circuit 40 of filter circuit 30 and with master
The display screen 50 that control circuit 40 is connected.
Amplifying circuit 20, is connected with circuit board assemblies 60, for putting the running voltage of circuit board assemblies 60 input
Big process, voltage signal is amplified in output.Specifically, amplifying circuit 20 includes operational amplifier U21, the first resistance R21, the second electricity
Resistance R22, the 3rd resistance R23 and the 4th resistance R24.One end of first resistance R21 is connected with circuit board assemblies 60, the other end and fortune
The normal phase input end calculating amplifier U21 is connected.The inverting input of operational amplifier U21 passes through the second resistance R22 ground connection.3rd
Resistance R23 is connected between outfan and the inverting input of operational amplifier U21.4th resistance R24 one end and the first resistance
R21 is connected with the normal phase input end of operational amplifier U21, other end ground connection.
In the present embodiment, the voltage that the first resistance R21 and the second resistance R22 inputs to operational amplifier U21 is respectively
Vin1 and Vin2, if R23/R22=R24/R21, then the voltage VOUT=R23/R22* of operational amplifier U21 outfan output
(Vin1-Vin2).By regulating the first resistance R21, the second resistance R22, the 3rd resistance R23 and the resistance of the 4th resistance R24, can
Change the amplification of amplifying circuit 20.If it is to be appreciated that the voltage that the first resistance R21 inputs to operational amplifier U21
When Vin1 is excessive, it is also possible to be provided with divider resistance R25, divider resistance R25 and first between circuit board assemblies 60 and voltage R21
Resistance R21 and the 4th resistance R24 constitutes bleeder circuit, to ensure the normal work of operational amplifier U21.
Specifically, operational amplifier U21 is SGM724 operational amplifier, and during the work of SGM724 operational amplifier, dominant frequency can be high
Reaching 10MHz, operating current is little, exports track to track, the advantage that can gather minimum electric current (such as the small area analysis of 10MA).
Filter circuit 30, is connected with amplifying circuit 20, for being filtered processing and exporting master control to amplification voltage signal
Circuit 40, to avoid there is noise jamming in the amplification voltage signal that amplifying circuit 20 exports.As depicted in figs. 1 and 2, filtered electrical
Road 30 is RC low-pass filter circuit, including filter resistance R31 and filter capacitor C31.Wherein, filter resistance R31 one end and amplification
The outfan of the operational amplifier U21 of circuit 20 is connected, and the other end is connected with the AD conversion port of governor circuit 40.Filter capacitor
C31 one end is accessed between filter resistance R31 and the AD conversion port of governor circuit 40, other end ground connection.
Governor circuit 40, is connected with filter circuit 20, for filtered amplification voltage signal is carried out analog digital conversion, and
The voltage data of output circuit board component 60 is to display screen 50.
Display screen 50, is connected with governor circuit 40, for receiving the voltage of the circuit board assemblies 60 of governor circuit 40 output
Data also show, thus can be visually seen the voltage data of circuit board assemblies 60, in order to determine the work of circuit board assemblies 60
Voltage is the most normal.Wherein, this voltage data refers to the magnitude of voltage of running voltage.
As it is shown in figure 1, this circuit board assemblies testing circuit also includes being arranged between filter circuit 30 and governor circuit 40
Protection pipe D41, the electric current for avoiding filtered amplification voltage signal that filter circuit 30 exports is excessive and damages master control
Circuit 40.Specifically, protection pipe D41 includes the first diode and second diode of series connection.The positive pole of the first diode and filter
Wave circuit 30 is connected, and the positive pole of negative pole and the second diode is connected.The negative pole of the second diode is electric with the power supply of governor circuit 40
Pressure (i.e. VCC_3V3) is connected.The negative pole of the first diode and the positive pole of the second diode are connected to the AD conversion of governor circuit 40
Port.Wherein, the positive pole of the first diode is connected with one end of filter capacitor C31 ground connection.It is to be appreciated that protection pipe D41 can
When the amplification voltage signal of amplifying circuit 20 output is too high so that protection pipe D41 conducting, is to governor circuit by voltage clamp
The supply voltage of 40, i.e. VCC_3V3, thus protect governor circuit 40 to be not damaged by.
In the circuit board assemblies testing circuit that the present embodiment is provided, the work that circuit board assemblies 60 is inputted by amplifying circuit 20
After voltage is amplified processing, output amplification voltage signal is to filter circuit 30, and filter circuit 30 enters amplifying voltage signal
Export to governor circuit 40 after row Filtering Processing；Governor circuit 40 carries out analog digital conversion, with the voltage of output circuit board component 60
Data；The voltage data of display screen 50 display circuit board component 60, in order to whether the running voltage of testing circuit board component 60 closes
Lattice, to ensure the quality of product.It is to be appreciated that this circuit board assemblies testing circuit simple in construction, to circuit board assemblies 60
Carry out voltage detecting process simple to operate, only circuit board assemblies 60 need to be connected with amplifying circuit 20, can be by display screen 50
Check the voltage data of circuit board assemblies 60, be conducive to improving detection efficiency.
Embodiment 2
Fig. 2 illustrates the circuit board of the operating current of the circuit board assemblies 60 for detecting intelligent robot in the present embodiment
The circuit theory diagrams of component detection circuit.As in figure 2 it is shown, this circuit board assemblies testing circuit includes being connected with circuit board assemblies 60
Current-to-voltage converting circuit 10, with the amplifying circuit 20 of current-to-voltage converting circuit 10, the filtering that is connected with amplifying circuit 20
Circuit 30, the governor circuit 40 that filter circuit 30 is connected and the display screen 50 being connected with governor circuit 40.
It is to be appreciated that amplifying circuit 20, filter circuit 30, governor circuit 40 and the electricity of display screen 50 in the present embodiment
Line structure and principle and amplifying circuit 20, filter circuit 30, governor circuit 40 and the circuit structure of display screen 50 in embodiment 1 and
Principle is consistent, repeats the most one by one at this.Further, the circuit board detecting circuit that the present embodiment is provided, also filter circuit 30 He
Being provided with protection pipe D41 between governor circuit 40, its circuit structure is identical with the protection pipe D41 provided in embodiment 1 with principle.
Current-to-voltage converting circuit 10, is connected with circuit board assemblies 60, for the operating current of Acquisition Circuit board component 60,
And operating current is changed into running voltage output to amplifying circuit.Current-to-voltage converting circuit 10, including test pin TP11,
Grafting pin J9, the 5th resistance R11, the 6th resistance R12, the first electric capacity C11, the second electric capacity C12, the 3rd electric capacity C13 and electrostatic
Pipe D11.Test pin TP11 is connected with circuit board assemblies 60 with grafting pin J9；It is to be appreciated that detected at operating current
Cheng Zhong, only need to be connected circuit board assemblies 60 with test pin TP11 and grafting pin J9, simple to operate.Grafting pin J9
The first outfan plate positive with the power supply of circuit board assemblies 60 and phasmajector D11 be connected, second outfan of grafting pin J9 with
The first resistance R21 in amplifying circuit 20 is connected.Wherein, phasmajector D11 one end is connected with first outfan of grafting pin J9,
Other end ground connection, can be used for preventing circuit board assemblies 60 have high pressure by time operational amplifier U21 is caused damage, thus play
Protective effect.Between first outfan and second outfan of grafting pin J9, parallel connection is provided with the first electric capacity C11 and the second electric capacity
C12, plays the effect of voltage between the first outfan and second outfan of stable grafting pin J9.Specifically, grafting pin
Second outfan of J9 the 5th resistance R11 in parallel and the 6th resistance R12 and the second resistance R22 phase in amplifying circuit 20
Even；Wherein, the 5th resistance R11 and the 6th resistance R12 is sampling resistor, for being turned by the operating current that circuit board assemblies 60 inputs
Change running voltage into input to operational amplifier U21.3rd electric capacity C13 and the 5th resistance R11 and the 6th resistance R12 is in parallel,
And one end ground connection, to play filter action.
It is to be appreciated that the first resistance R21 phase of the second outfan of current-to-voltage converting circuit 10 and amplifying circuit 20
Even, or it is connected with the second resistance R22 of amplifying circuit 20 by the 5th resistance R11 and the 6th resistance R12, passes through operation amplifier
Device U21 is amplified process to two running voltages exported by the first resistance R21 and the second resistance R22 respectively and forms amplification
Voltage signal also exports to filter circuit.The amplification voltage signal received is filtered processing and exporting extremely by filter circuit 30
, there is noise jamming with the amplification voltage signal avoiding amplifying circuit 20 to export in governor circuit 40.After governor circuit 40 is to filtering
Amplification voltage signal carry out analog digital conversion, and the current data of output circuit board component 60 is to display screen 50.Display screen 50 with
Governor circuit 40 is connected, for receiving the current data of governor circuit 40 output circuit board component 60 and showing, thus can be directly perceived
See the operating current of circuit board assemblies 60, in order to determine that the operating current of circuit board assemblies 60 is the most normal, thus ensure
Product quality.Wherein, current data refers to the current value of operating current.It is to be appreciated that this circuit board assemblies testing circuit knot
Structure is simple, and carrying out circuit board assemblies 60, current detecting process operation is simple, only need to be by circuit board assemblies 60 and test pin
TP11 is connected with grafting pin J9, can be checked the current data of circuit board assemblies 60 by display screen 50, be conducive to improving inspection
Survey efficiency.
This utility model is illustrated by above-mentioned specific embodiment, it will be appreciated by those skilled in the art that, not
In the case of departing from this utility model scope, it is also possible to this utility model is carried out various conversion and equivalent substitutes.It addition, for
Particular condition or concrete condition, can make various amendment, without deviating from scope of the present utility model to this utility model.Therefore,
This utility model is not limited to disclosed specific embodiment, and should include falling in this utility model right
All embodiments.
Claims (10)
1. a circuit board assemblies testing circuit, it is characterised in that include amplifying circuit (20), filter circuit (30), master control electricity
Road (40) and display screen (50)；
Described amplifying circuit (20) is used for the running voltage to described circuit board assemblies (60) or described circuit board assemblies (60)
Operating current through the running voltage that current/voltage is converted to be amplified process, output amplify voltage signal；
Described filter circuit (30) is connected to described amplifying circuit (20), for described amplification voltage signal is filtered process
And export；
Described governor circuit (40) is connected to described filter circuit (30), for carrying out filtered described amplification voltage signal
Analog digital conversion, and export voltage data or the current data of described circuit board assemblies (60)；
Described display screen (50) is connected to described governor circuit (40), is used for showing the voltage data of described circuit board assemblies (60)
Or current data.
Circuit board assemblies testing circuit the most according to claim 1, it is characterised in that also include current-to-voltage converting circuit
(10), described current-to-voltage converting circuit (10) is connected between described circuit board assemblies (60) and described amplifying circuit (20),
For gathering the operating current of described circuit board assemblies (60), after described operating current changes into running voltage, output is to described
Amplifying circuit (20).
Circuit board assemblies testing circuit the most according to claim 1 and 2, it is characterised in that also include being arranged on described filter
Protection pipe (D41) between wave circuit (30) and described governor circuit (40).
Circuit board assemblies testing circuit the most according to claim 3, it is characterised in that described protection pipe (D41) includes string
First diode of connection and the second diode；The positive pole of described first diode is connected with described filter circuit (30), negative pole with
The positive pole of described second diode is connected；The supply voltage phase of the negative pole of described second diode and described governor circuit (40)
Even；The negative pole of described first diode and the positive pole of described second diode are connected to described governor circuit (40).
Circuit board assemblies testing circuit the most according to claim 4, it is characterised in that described filter circuit (30) includes filter
Ripple resistance (R31) and filter capacitor (C31)；Described filter resistance (R31) one end is connected with described amplifying circuit (20), the other end
It is connected with described governor circuit (40)；Described filter resistance (R31) and described master control electricity are accessed in described filter capacitor (C31) one end
Between road (40), other end ground connection；One end of described filter capacitor (C31) ground connection is connected with the positive pole of described first diode.
Circuit board assemblies testing circuit the most according to claim 1, it is characterised in that described amplifying circuit (20) includes fortune
Calculate amplifier (U21), the first resistance (R21), the second resistance (R22), the 3rd resistance (R23) and the 4th resistance (R24)；Described
One end of one resistance (R21) is connected with described circuit board assemblies (60), and the other end is defeated with the positive of described operational amplifier (U21)
Enter end to be connected；The inverting input of described operational amplifier (U21) passes through described second resistance (R22) ground connection；Described 3rd electricity
Resistance (R23) is connected between outfan and the inverting input of described operational amplifier (U21)；Described 4th resistance (R24) one
End is connected with the normal phase input end of described first resistance (R21) and described operational amplifier (U21), other end ground connection.
Circuit board assemblies testing circuit the most according to claim 6, it is characterised in that also include divider resistance (R25), institute
State divider resistance (R25) to be connected between described circuit board assemblies (60) and described first resistance (R21).
Circuit board assemblies testing circuit the most according to claim 2, it is characterised in that described amplifying circuit (20) includes fortune
Calculate amplifier (U21), the first resistance (R21), the second resistance (R22), the 3rd resistance (R23) and the 4th resistance (R24)；Described
One end of one resistance (R21) is connected to described current-to-voltage converting circuit (10), and the other end is connected to described operational amplifier
(U21) normal phase input end；The inverting input of described operational amplifier (U21) passes through described second resistance (R22) ground connection；
Described 3rd resistance (R23) is connected between outfan and the inverting input of described operational amplifier (U21)；Described 4th electricity
Resistance (R24) one end is connected with the normal phase input end of described first resistance (R21) and described operational amplifier (U21), another termination
Ground.
Circuit board assemblies testing circuit the most according to claim 8, it is characterised in that described current-to-voltage converting circuit
(10) test pin (TP11), grafting pin (J9), the 5th resistance (R11), the 6th resistance (R12), the first electric capacity are included
(C11), the second electric capacity (C12), the 3rd electric capacity (C13) and phasmajector (D11)；Described test pin (TP11) and described insertion pipe
Foot (J9) is connected with described circuit board assemblies (60)；First outfan of described grafting pin (J9) and described circuit board assemblies
(60) positive source is connected with phasmajector (D11), the second outfan of described grafting pin (J9) and described amplifying circuit
(20) it is connected；Between described first outfan and the second outfan, parallel connection is provided with the first electric capacity (C11) and the second electric capacity (C12)；
Described second outfan the 5th resistance (R11) in parallel is connected with described amplifying circuit (20) with the 6th resistance (R12)；Institute
State the 3rd electric capacity (C13) in parallel with described 5th resistance (R11) and described 6th resistance (R12), and one end ground connection.
Circuit board assemblies testing circuit the most according to claim 1, it is characterised in that described circuit board assemblies is intelligence
The printed circuit board assembly of robot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620425802.1U CN205786830U (en) | 2016-05-11 | 2016-05-11 | Circuit board assemblies testing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620425802.1U CN205786830U (en) | 2016-05-11 | 2016-05-11 | Circuit board assemblies testing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205786830U true CN205786830U (en) | 2016-12-07 |
Family
ID=57409664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620425802.1U Active CN205786830U (en) | 2016-05-11 | 2016-05-11 | Circuit board assemblies testing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205786830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109298029A (en) * | 2018-10-23 | 2019-02-01 | 王虹 | Intelligent humidity detection device based on integral operation |
-
2016
- 2016-05-11 CN CN201620425802.1U patent/CN205786830U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109298029A (en) * | 2018-10-23 | 2019-02-01 | 王虹 | Intelligent humidity detection device based on integral operation |
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