CN207396532U - A kind of driving source of Online Transaction Processing - Google Patents
A kind of driving source of Online Transaction Processing Download PDFInfo
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- CN207396532U CN207396532U CN201721554241.6U CN201721554241U CN207396532U CN 207396532 U CN207396532 U CN 207396532U CN 201721554241 U CN201721554241 U CN 201721554241U CN 207396532 U CN207396532 U CN 207396532U
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Abstract
The utility model discloses a kind of driving source of Online Transaction Processing, and continuous signal is converted into the driving voltage injection circuit of discrete signal and response current test circuit for receiving response current under being controlled including Online Transaction Processing；After the discrete signal of driving voltage injection circuit output is by circuit-under-test, response current, response current input response current test circuit are formed in circuit-under-test, response current test circuit obtains to return to the test electric current of Online Transaction Processing.The driving source of the utility model Online Transaction Processing avoids the complicated mathematical operation for bringing continuous signal discretization, while can realize that sampling is synchronous with excitation, improves the performance of VI data collecting systems.
Description
Technical field
The utility model is related to circuit-board card detection field more particularly to a kind of driving sources of Online Transaction Processing.
Background technology
VI measuring technologies refer to the periodic signal that certain amplitude and frequency are injected in circuit node, obtain electric current and become with voltage
The relation curve of change, i.e. VI curves.The shape of VI curves is determined by the impedance operator between being tested node.Device fault would generally
The change of impedance operator between pin port is shown as, thus corresponding VI curves will also change.By comparing fine or not electricity
Whether the VI curves of the identical pin of same node point or fine or not device are consistent on the plate of road, it can be found that malfunctioning node or device.Cause
This, the fault diagnosis of online circuit can be completed using VI measuring technologies, realize the general detection of circuit-board card, had on being easy to
Hand need not understand the advantages such as circuit theory, testing efficiency height.At present, VI measuring technologies have become electronic circuit fault diagnosis neck
One of the important research content in domain.Premised on effective acquisition of VI data, design can be obtained accurately for the realization of VI measuring technologies
The VI test data collection systems of VI curve datas are obtained, are of great significance for the development of correlative study.
The voltage source designing scheme of traditional VI test systems is using continuous signal, if triangular wave, sine wave are as VI
The driving source of test, wherein most commonly seen with the use of sine wave.In this case, to realize that VI is sampled, must just utilize
Continuous signal is converted discrete magnitude by the mathematical measures such as Fourier transformation, and with the increase of sampled point, not only calculating process is complicated, more
It is important be be difficult to ensure that VI test sampling it is synchronous with excitation.
Utility model content
(1) technical problems to be solved
In order to solve the above problem of the prior art, a kind of driving source of Online Transaction Processing of the present utility model.
(2) technical solution
To achieve the above object, the main technical schemes that the utility model uses include：
Continuous signal is converted into discrete letter by a kind of driving source of Online Transaction Processing under being controlled including Online Transaction Processing
Number driving voltage injection circuit and response current test circuit for receiving response current；
After the discrete signal of the driving voltage injection circuit output is by circuit-under-test, the response electricity of circuit-under-test is obtained
Stream, the response current input the response current test circuit, and the response current test circuit obtains to return described
The test electric current of Online Transaction Processing；
The driving voltage injection circuit includes：It is same for amplifying the first of the Online Transaction Processing input continuous signal
Phase amplifying circuit, for the voltage follower that improves output voltage signal driving force and for controlling the voltage follower defeated
The on-off circuit for going out and separating；
The input terminal of first in-phase amplification circuit is connected with data reforming unit AD, and described first is electric with mutually amplifying
The output terminal on road is connected with the driving end of the on-off circuit, the control terminal of the on-off circuit and the Online Transaction Processing
Be connected, the output terminal of the on-off circuit is connected with the input terminal of the voltage follower, the voltage follower it is defeated
Outlet is connected with the first probe；
The response current test circuit includes sample circuit and the second in-phase amplification circuit；
The input terminal of second in-phase amplification circuit is connected with the second probe, second in-phase amplification circuit it is defeated
Outlet is connected with sampling hold circuit, and the sample circuit is connected with the input terminal of second in-phase amplification circuit, institute
It states sample circuit input terminal to be connected between the input terminal and the second probe of second in-phase amplification circuit, the sample circuit
Output head grounding.
Further, first in-phase amplification circuit includes resistance R0, resistance R1, resistance R2 and operational amplifier U1；
The specific connection mode of first in-phase amplification circuit is：
One end of the resistance R0 is connected with the input terminal of first in-phase amplification circuit, and the resistance R0's is another
End is connected with the in-phase input end of the operational amplifier U1, resistance R1 one end ground connection, the other end and the operation amplifier
The reverse input end of device U1 is connected, and described resistance R2 one end is connected to the reversed of the resistance R1 and operational amplifier U1
Between input terminal, the other end is located at the output terminal of the operational amplifier U1, and the output terminal of the operational amplifier U1 is
One leads to the output terminal of amplifying circuit.
Further, the amplification factor of first in-phase amplification circuit is the resistance of the resistance R2 and resistance R1
Value ratio.
Further, the on-off circuit includes resistance R3, resistance R4, resistance R5, resistance R6, transistor Q1 and transistor
Q2；
The specific connection mode of the on-off circuit is：
One end of the resistance R3 is connected with the control terminal of the on-off circuit, one end connection+12V of the resistance R4
Power supply, the other end of the resistance R4 are connected with the other end of the resistance R3 and the base stage of the transistor Q2, the crystalline substance
The grounded collector of body pipe Q2, transmitting collection and the base stage of the transistor Q1 and one end of the resistance R5 of the transistor Q2
It is connected, the resistance R5 other ends are connected with the driving end of the on-off circuit, one end and the switch of the resistance R6
The driving end of circuit is connected, and the other end of the resistance R6 is connected with the collector of the transistor Q1, the transistor
The emitter of Q1 is the output terminal of the on-off circuit.
Further, the signal that the on-off circuit is exported by the Online Transaction Processing controls：
When it is high level to export signal, the on-off circuit is closed；
When it is low level to export signal, the on-off circuit is in opening state.
Further, the voltage follower includes resistance R7 and operational amplifier U2；
The specific connection mode of the voltage follower is：
The in-phase input end of the operational amplifier U2 is the input terminal of voltage follower, the operational amplifier U2's
Inverting input is connected with the output terminal of the operational amplifier U2, output terminal and the resistance of the operational amplifier U2
R7 one end is connected, and the other end of the resistance R7 is the output terminal of the voltage follower.
Further, the output voltage of the voltage follower is：
When the on-off circuit is closed, the voltage follower not output voltage；
When the on-off circuit in the open state, the output voltage of the voltage follower is with described first with mutually putting
The voltage that big circuit is exported is numerically identical.
Further, second in-phase amplification circuit includes resistance R9, resistance R10, resistance R11 and operational amplifier
U3；
The sample circuit includes resistance R8；
The specific connection mode of second in-phase amplification circuit and the sample circuit is：
Described resistance R9 one end is connected with the input terminal of second in-phase amplification circuit, the resistance R9 other ends and institute
The in-phase input end for stating operational amplifier U3 is connected, and resistance R11 one end ground connection, the other end is connected with the resistance R10,
The other end of the resistance R10 is connected with the output terminal of operational amplifier U3, and the inverting input of the operational amplifier U3 connects
It is connected between the resistance R10 and the resistance R11, the output terminal of the operational amplifier U3 is the second in-phase amplification circuit
Output terminal, one end of the resistance R8 be connected to second in-phase amplification circuit input terminal and second probe it
Between, the other end ground connection of the resistance R8.
Further, the amplification factor of second in-phase amplification circuit is the resistance R10 and resistance R11's
Resistance value ratio.
Further, sampling hold circuit is connected between first probe and the voltage follower, to being injected into
The voltage value of the pumping signal of the circuit-under-test synchronizes acquisition, and then obtains VI and test required dynamic electric voltage value；
Second probe is connected with another node of circuit-under-test, obtains the dynamic response electric current of the circuit-under-test, warp
It crosses the response current test circuit with sampling hold circuit to be connected, and then obtains the VI and test required dynamic current
Value.
(3) advantageous effect
The beneficial effects of the utility model are：
1) continuous signal is divided into the driving source that a series of pulse signal of different amplitudes test as VI, general is continuously
Waving map is converted into digital domain test, avoids the complex mathematical calculating process for bringing continuous signal discretization；
2) the bad control of sampled point of test is powered continuously, i.e., discretization can be carried out to it, but cannot be guaranteed to adopt
Sample is synchronous with excitation, and the driving source of pulse signal designs, and can effectively realize that sampling is synchronous with excitation, it is ensured that has ginseng
Two points for examining value complete test under identical conditions, and the VI test datas for making acquisition are more convincing；
3) testing time of each sampled point is adjustable, and test voltage amplitude is controllable, can be set for different test objects
Count different voltage magnitude scopes and testing time；
4) the voltage source design of small-signal, burst pulse, is not easy to damage measured device, ensure that the safety of VI tests
Property.
Description of the drawings
Fig. 1 is the schematic diagram of the excitation source circuit for the Online Transaction Processing that the utility model embodiment provides；
Fig. 2 is the enlarged diagram of the first in-phase amplification circuit in Fig. 1；
Fig. 3 is the enlarged diagram of the on-off circuit in Fig. 1；
Fig. 4 is the enlarged diagram of the voltage follower in Fig. 1；
Fig. 5 is the enlarged diagram of the second in-phase amplification circuit in Fig. 1；
Fig. 6 is the sample circuit ground enlarged diagram in Fig. 1.
【Reference sign】
Resistance：R0—R10；
Operational amplifier：U1—U3；
Data reforming unit：AD；
The output voltage of data conversion device：Ui；First leads to the output voltage of amplifying circuit：Uo；The output of on-off circuit
Voltage：Uk；The output voltage of voltage follower：U(V)；Response current：Ii；Sampled voltage：Us；Second in-phase amplification circuit it is defeated
Go out voltage：U(A).
Specific embodiment
It is below in conjunction with the accompanying drawings, right by specific embodiment in order to understand in order to preferably explain the utility model
The utility model is described in detail.
Embodiment
VI tests need to give circuit-under-test node injection driving voltage V, and test circuit-under-test another node sound
Induced current I, to form VI curves.The utility model devises a kind of driving source of Online Transaction Processing therefore, in order to further
The utility model is illustrated, a kind of embodiment of the driving source of Online Transaction Processing is provided, is controlled including Online Transaction Processing
It is lower that continuous signal is converted into the driving voltage injection circuit of discrete signal and for receiving the test of the response current of response current
Circuit, as shown in Figure 1.
Driving voltage injection circuit includes：First for amplifying the Online Transaction Processing input continuous signal mutually puts together
Big circuit, for the voltage follower that improves output voltage signal driving force and for control the voltage follower export and
The on-off circuit of partition, wherein, the connection mode of the first in-phase amplification circuit, on-off circuit and voltage follower is：First is same
The input terminal a1 of phase amplifying circuit is connected with data reforming unit AD, output terminal a2 and the switch electricity of the first in-phase amplification circuit
The driving end b1 on road is connected, and the control terminal b2 of on-off circuit is connected with Online Transaction Processing, the output terminal b3 of on-off circuit
It is connected with the input terminal c1 of voltage follower, the output terminal c2 of the voltage follower is connected with probe 1.
As shown in Fig. 2, the first in-phase amplification circuit includes resistance R0, resistance R1, resistance R2 and operational amplifier U1, tool
Body connection mode is：One end of resistance R0 is connected with the input terminal a1 of the first in-phase amplification circuit, the other end of resistance R0 with
The in-phase input end connection of operational amplifier U1, resistance R1 one end ground connection, the reverse input end of the other end and operational amplifier U1
It is connected, resistance R2 one end is connected between the reverse input end of resistance R1 and operational amplifier U1, and the other end is put positioned at computing
The output terminal of big device U1, the output terminal of operational amplifier U1 is the first output terminal a2 for leading to amplifying circuit.First mutually puts together
The resistance value ratio that the amplification factor of big circuit is resistance R2 and resistance R1.
As shown in figure 3, on-off circuit includes resistance R3, resistance R4, resistance R5, resistance R6, transistor Q1 and transistor Q2,
Its specific connection mode is：One end of resistance R3 is connected with the control terminal b2 of on-off circuit, one end connection+12V of resistance R4
Power supply, the other end of resistance R4 are connected with the base stage of the other end of resistance R3 and transistor Q2, and the collector of transistor Q2 connects
Ground, the transmitting collection of transistor Q2 are connected with the base stage of transistor Q1 and one end of resistance R5, the resistance R5 other ends and switch electricity
The driving end b1 on road is connected, and one end of resistance R6 is connected with the driving end b1 of on-off circuit, the other end and crystal of resistance R6
The collector of pipe Q1 is connected, and the emitter of transistor Q1 is the output terminal b3 of on-off circuit.
The CTR signals that on-off circuit is exported by Online Transaction Processing control：It is powered-down when it is high level to export CTR signals
Road is closed；When it is low level to export CTR signals, the on-off circuit is in opening state.
As shown in figure 4, voltage follower includes resistance R7 and operational amplifier U2, specific connection mode are：Computing is put
The in-phase input end of big device U2 is the input terminal c1 of voltage follower, the inverting input and operation amplifier of operational amplifier U2
The output terminal of device U2 is connected, and the output terminal of operational amplifier U2 is connected with resistance R7 one end, and the other end of resistance R7 is
The output terminal c2 of voltage follower.
The output voltage of voltage follower is：When on-off circuit is closed, voltage follower not output voltage；
When on-off circuit in the open state, the electricity that the output voltage U (V) of voltage follower is exported with the first in-phase amplification circuit
Press UoIt is numerically identical.
Response current test circuit includes sample circuit and the second in-phase amplification circuit, connection mode are：Second same phase
The input terminal d1 of amplifying circuit is connected with probe 2, and the output terminal d2 of the second in-phase amplification circuit is connected with sampling hold circuit
It connects, sample circuit is connected with the input terminal d1 of the second in-phase amplification circuit, and sample circuit input terminal e1 is connected to the second same phase
Between the input terminal d1 and the second probe of amplifying circuit, sample circuit output terminal e2 ground connection.
As shown in Figure 5 and Figure 6, the second in-phase amplification circuit includes resistance R9, resistance R10, resistance R11 and operational amplifier
U3, sample circuit include resistance R8.The specific connection mode of response current test circuit is：It is mutually put together with second resistance R9 one end
The input terminal d1 connections of big circuit, the resistance R9 other ends are connected with the in-phase input end of operational amplifier U3, resistance R11 one end
Ground connection, the other end are connected with resistance R10, and the other end of resistance R10 is connected with the output terminal of operational amplifier U3, operational amplifier
The inverting input of U3 is connected between resistance R10 and resistance R11, and the output terminal of operational amplifier U3 is the second same mutually amplification
One end of the output terminal d2 of circuit, resistance R8 are connected between the input terminal d1 of the second in-phase amplification circuit and probe 2, resistance R8
The other end ground connection.The amplification factor of second in-phase amplification circuit is the resistance value ratio of resistance R10 and resistance R11.
Between probe 1 and voltage follower sampling hold circuit is connected with, to being injected into the pumping signal of circuit-under-test
Voltage value synchronizes acquisition, and then obtains VI and test required dynamic electric voltage value；Second probe and another section of circuit-under-test
Point is connected, and obtains the dynamic response electric current of circuit-under-test, is connected by the response current test circuit with sampling hold circuit,
And then it obtains VI and tests required dynamic response current value.
In order to clearly illustrate the operating state of the utility model embodiment, below in terms of two illustrate：
1) driving voltage injection circuit
Online Transaction Processing sends target voltage digital quantity, is converted into analog quantity by data conversion device DA, data turn
Changing device output voltage UiIt is sent into the input port i.e. input terminal a1 of the first in-phase amplification circuit of driving voltage injection circuit, electricity
It hinders R0, resistance R1, resistance R2 and operational amplifier U1 and forms in-phase amplification circuit, amplification factor AU1For：AU1=R2/R1,
Then：Uo=(R2/R1) .Ui。
Resistance R3, resistance R4, resistance R5, resistance R6 and transistor Q1 and transistor Q2 form the switch electricity of totem pole configuration
Road, the CTR signals sent out by Online Transaction Processing are controlled, and control planning is：
When CTR is high level：UkFor high-impedance state；
When CTR is low level：Uk=Uo。
Resistance R7 and operational amplifier U2 forms voltage follower, to improve the driving force of output voltage signal U (V), U
(V) value is：U (V)=Uk
Then：
When CTR is high level：U (V) is high-impedance state；
When CTR is low level：U (V)=(R2/R1) .Ui。
U (V) signals are injected into one end of circuit-under-test node by probe 1, form pumping signal；Meanwhile it samples and protects
Circuit is held under Online Transaction Processing control, synchronizes to being injected into the voltage value of pumping signal U (V) of circuit-under-test and adopts
Collection.
The cardinal principle of driving voltage injection circuit is：Online Transaction Processing is exported by controlling data conversion device DA
Target voltage values are amplified to VI by the first in-phase amplification circuit and test required amplitude range；Online Transaction Processing passes through
Control signal CTR controls on-off circuit, and then controls the output of voltage follower with isolating, so as to fulfill pumping signal from
It dissipates and adjusts wide；Pass through Synchronization Control sampling hold circuit, the voltage value of the pumping signal U (V) to being injected into circuit-under-test simultaneously
Acquisition is synchronized, and then obtains VI and tests required dynamic electric voltage value U (V).
2) response current test circuit
By the pumping signal U (V) of the driving voltage injection circuit injection a certain node of circuit-under-test, formed in circuit-under-test
Response current Ii, response current test circuit, response current I are output to by the probe 2 for accessing another node of circuit-under-testiThrough
Resistance R8 samplings are crossed, forming sampled voltage Us is：Us=R8/Ii。
Resistance R9, R10, R11 and operational amplifier U3 form in-phase amplification circuit, amplification factor AU1For：AU2=R10/
R11,
Then：U (A)=(R8.R10.Ii)/R11。
Sampling hold circuit carries out the voltage value U (A) of response current test circuit output same under test system control
Step acquisition.The response current value I of response current test circuit output voltage values U (A) and circuit-under-testiLinear correspondence,
System is handled after tested, it can be deduced that the response current value I of another node of the circuit-under-test of VI curves.
It is to be appreciated that above to specific embodiment of the utility model carry out description simply to illustrate that this practicality
New technology path and feature, its object is to allow those skilled in the art that can understand the content of the utility model simultaneously
Implement according to this, but the utility model is not limited to above-mentioned particular implementation.Every scope in the utility model claims
The various change inside made or modification should all be covered within the protection scope of the present utility model.
Claims (10)
1. a kind of driving source of Online Transaction Processing, which is characterized in that turn continuous signal under being controlled including Online Transaction Processing
Turn to the driving voltage injection circuit of discrete signal and the response current test circuit for receiving response current；
After the discrete signal of the driving voltage injection circuit output is by circuit-under-test, the response current of circuit-under-test is obtained,
The response current inputs the response current test circuit, and the response current test circuit obtains to return described online
The test electric current of test system；
The driving voltage injection circuit includes：First for amplifying the Online Transaction Processing input continuous signal mutually puts together
Big circuit, for the voltage follower that improves output voltage signal driving force and for control the voltage follower export and
The on-off circuit of partition；
The input terminal of first in-phase amplification circuit is connected with data reforming unit, first in-phase amplification circuit it is defeated
Outlet is connected with the driving end of the on-off circuit, and the control terminal of the on-off circuit is connected with the Online Transaction Processing
It connects, the output terminal of the on-off circuit is connected with the input terminal of the voltage follower, the output terminal of the voltage follower
It is connected with the first probe；
The response current test circuit includes sample circuit and the second in-phase amplification circuit；
The input terminal of second in-phase amplification circuit is connected with the second probe, the output terminal of second in-phase amplification circuit
It is connected with sampling hold circuit, the sample circuit is connected with the input terminal of second in-phase amplification circuit, described to adopt
Sample circuit input end is connected between the input terminal and the second probe of second in-phase amplification circuit, the sample circuit output
End ground connection.
2. the driving source of a kind of Online Transaction Processing according to claim 1, which is characterized in that described first the same as mutually amplification
Circuit includes resistance (R0), resistance (R1), resistance (R2) and operational amplifier (U1)；
The specific connection mode of first in-phase amplification circuit is：
One end of the resistance (R0) is connected with the input terminal of first in-phase amplification circuit, the resistance (R0) it is another
End is connected with the in-phase input end of the operational amplifier (U1), resistance (R1) one end ground connection, the other end and the computing
The reverse input end of amplifier (U1) is connected, and described resistance (R2) one end is connected to the resistance (R1) and the operation amplifier
Between the reverse input end of device (U1), the other end is located at the output terminal of the operational amplifier (U1), the operational amplifier
(U1) output terminal is the first output terminal for leading to amplifying circuit.
3. the driving source of a kind of Online Transaction Processing according to claim 2, which is characterized in that described first the same as mutually amplification
The amplification factor of circuit is the resistance (R2) and the resistance value ratio of the resistance (R1).
4. the driving source of a kind of Online Transaction Processing according to claim 1, which is characterized in that the on-off circuit includes
Resistance (R3), resistance (R4), resistance (R5), resistance (R6), transistor (Q1) and transistor (Q2)；
The specific connection mode of the on-off circuit is：
One end of the resistance (R3) is connected with the control terminal of the on-off circuit, one end connection+12V of the resistance (R4)
Power supply, the other end of the resistance (R4) are connected with the base stage of the other end of the resistance (R3) and the transistor (Q2),
The grounded collector of the transistor (Q2), the transmitting collection of the transistor (Q2) and the base stage of the transistor (Q1) and described
One end of resistance (R5) is connected, and resistance (R5) other end is connected with the driving end of the on-off circuit, the resistance
(R6) one end is connected with the driving end of the on-off circuit, the other end and the transistor (Q1) of the resistance (R6)
Collector is connected, and the emitter of the transistor (Q1) is the output terminal of the on-off circuit.
5. the driving source of a kind of Online Transaction Processing according to claim 4, which is characterized in that the on-off circuit is by institute
State the signal control of Online Transaction Processing output：
When it is high level to export signal, the on-off circuit is closed；
When it is low level to export signal, the on-off circuit is in opening state.
A kind of 6. driving source of Online Transaction Processing according to claim 1, which is characterized in that the voltage follower bag
Include resistance (R7) and operational amplifier (U2)；
The specific connection mode of the voltage follower is：
The in-phase input end of the operational amplifier (U2) is the input terminal of voltage follower, the operational amplifier (U2)
Inverting input is connected with the output terminal of the operational amplifier (U2), the output terminal of the operational amplifier (U2) with it is described
Resistance (R7) one end is connected, and the other end of the resistance (R7) is the output terminal of the voltage follower.
7. the driving source of a kind of Online Transaction Processing according to claim 6, which is characterized in that the voltage follower
Output voltage is：
When the on-off circuit is closed, the voltage follower not output voltage；
When the on-off circuit in the open state, the output voltage of the voltage follower and described first electric with mutually amplification
The voltage that road is exported is numerically identical.
8. the driving source of a kind of Online Transaction Processing according to claim 1, which is characterized in that described second the same as mutually amplification
Circuit includes resistance (R9), resistance (R10), resistance (R11) and operational amplifier (U3)；
The sample circuit includes resistance (R8)；
The specific connection mode of second in-phase amplification circuit and the sample circuit is：
Described resistance (R9) one end is connected with the input terminal of second in-phase amplification circuit, resistance (R9) other end and institute
The in-phase input end for stating operational amplifier (U3) is connected, resistance (R11) one end ground connection, the other end and the resistance
(R10) connect, the other end of the resistance (R10) is connected with the output terminal of operational amplifier (U3), the operational amplifier
(U3) inverting input is connected between the resistance (R10) and the resistance (R11), the operational amplifier (U3) it is defeated
Outlet is the output terminal of the second in-phase amplification circuit, and one end of the resistance (R8) is connected to second in-phase amplification circuit
Input terminal and second probe between, the other end of the resistance (R8) ground connection.
9. the driving source of a kind of Online Transaction Processing according to claim 8, which is characterized in that described second the same as mutually amplification
The amplification factor of circuit is resistance (R10) and the resistance value ratio of resistance (R11).
10. a kind of driving source of Online Transaction Processing according to claim 1, which is characterized in that first probe and
Be connected with sampling hold circuit between the voltage follower, to be injected into the circuit-under-test pumping signal voltage value into
Row synchronous acquisition, and then obtain VI and test required dynamic electric voltage value；
Second probe is connected with another node of circuit-under-test, the dynamic response electric current of the circuit-under-test is obtained, by institute
It states response current test circuit with sampling hold circuit to be connected, and then obtains the VI and test required dynamic current value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721554241.6U CN207396532U (en) | 2017-11-20 | 2017-11-20 | A kind of driving source of Online Transaction Processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721554241.6U CN207396532U (en) | 2017-11-20 | 2017-11-20 | A kind of driving source of Online Transaction Processing |
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| Publication Number | Publication Date |
|---|---|
| CN207396532U true CN207396532U (en) | 2018-05-22 |
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ID=62323920
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721554241.6U Active CN207396532U (en) | 2017-11-20 | 2017-11-20 | A kind of driving source of Online Transaction Processing |
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| Country | Link |
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| CN (1) | CN207396532U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109691A (en) * | 2021-03-04 | 2021-07-13 | 国营芜湖机械厂 | Portable circuit board test equipment based on VI curve |
-
2017
- 2017-11-20 CN CN201721554241.6U patent/CN207396532U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109691A (en) * | 2021-03-04 | 2021-07-13 | 国营芜湖机械厂 | Portable circuit board test equipment based on VI curve |
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