CN209102765U - Interface detection unit based on micro control system - Google Patents
Interface detection unit based on micro control system Download PDFInfo
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- CN209102765U CN209102765U CN201821784780.3U CN201821784780U CN209102765U CN 209102765 U CN209102765 U CN 209102765U CN 201821784780 U CN201821784780 U CN 201821784780U CN 209102765 U CN209102765 U CN 209102765U
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- connector
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- analog switch
- detection unit
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Abstract
The utility model provides an interface detection unit based on a micro control system, which comprises a connector group, an analog switch group, an interface connector group, a measurement circuit and a control module; the connector group comprises a normal signal connector, a special signal connector and an excitation signal connector; the signal output end of the normal signal connector is in signal connection with the interface connector group; the signal output end of the special signal connector is in signal connection with the switch input end of the analog switch group; the switch output end of the analog switch group is divided into a normal measuring end, a special measuring end and an excitation signal output end, the normal measuring end is in signal connection with the interface connector group, the special measuring end is in signal connection with the measuring circuit, and the excitation signal output end is in signal connection with the input end of the excitation signal connector. The utility model discloses a setting of analog switch group has realized the switching detection of different kinds of detected signal, when having avoided using same detection circuitry, and the circuit that the excitation detection mode leads to easily burns out the problem.
Description
Technical field
The utility model belongs to Airborne Survey technical field, detects more particularly, to a kind of interface based on micro control system
Unit.
Background technique
Conventional teletypewriter set detection, needs to be correspondingly arranged 8 detection cases, and 8 detections on 8 detection cases and equipment
Interface is arranged in a one-to-one correspondence, and wiring is complicated, not easy to install, and detection case docks fixation with interface, can not exchange, and checks installation fee
When laborious, higher cost.
Summary of the invention
In view of this, the utility model is directed to a kind of interface detection unit based on micro control system, in microcontroller
The detection respectively that normal signal and distinctive signal are realized under the control of system, avoids causing circuit to burn using same detection circuit
It is bad.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of interface detection unit based on micro control system, including connector group, analog switch group, interface connector
Group, measuring circuit and control module；
The connector group includes normal signal connector, distinctive signal connector and pumping signal connector；
The analog switch group includes switch input terminal, switch control terminal and output switching terminal；
The signal output end of the normal signal connector is connect with interface connector group signal；
The signal output end of the distinctive signal connector is connect with the switch input terminal signal of analog switch group；
The output switching terminal of the analog switch group is divided into normal measurement end, special measurement end and pumping signal output end,
The normal measurement end is connect with interface connector group signal, and the special measurement end is connect with measuring circuit signal, described to swash
Signal output end is encouraged to connect with the input end signal of pumping signal connector；
The control module is connect with the switch control end signal of analog switch group；
The measuring circuit feedback end is connect with the control module signal.
Further, the interface detection unit based on micro control system further includes shell, and the connector group is fixed
On shell, the analog switch group, intermediate connector interface connector group, measuring circuit, identification circuit and control module are solid
It is scheduled in shell.
Further, the connector group includes cylindrical connector or rectangular connector.
Further, the control module is connected by adjusting the switch control end signal of circuit and the analog switch group
It connects.
Further, the adjusting circuit includes adjusting chip, which is ULN2003.
Further, the analog switch group is made of multiple analog switch chips, the analog switch chip model
IM03TS and/or AQW212A and/or LH1502.
Further, the interface connector group includes multiple interface chips, model PC104.
Further, the measuring circuit includes true rms measurement circuit.
Further, the true rms measurement circuit is made of RMS conversion device and peripheral circuit work, this really has
Valid value converter model is LTC1966.
Further, the connector group further includes identification signal connector, and the identification signal connector passes through identification
Circuit is connect with control module signal.
Further, the connector group includes multiple connector chips, and multiple connector chip presses its pin assignments,
Including normal signal connector, distinctive signal connector, pumping signal connector and identification signal connector.
Connector chip model is DF13.
Further, the identification circuit includes four identification resistance being disposed in parallel on control module input pin,
Four jacks of the signal input connector pass through the input pin of identification resistance access control module respectively.
Compared with the existing technology, the interface detection unit described in the utility model based on micro control system has following excellent
Gesture:
(1) the interface detection unit described in the utility model based on micro control system, by the setting of analog switch group,
The change detection for realizing variety classes detection signal when avoiding using same detection route, motivates caused by detection pattern
Route easy burn-out problem.
(2) the interface detection unit described in the utility model based on micro control system, it is real by the setting of identification circuit
Show interface detection unit to dock with measurement equipment to be checked detection the random of interface, realizes exchange when detection case detection installation.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is the interface detection unit schematic illustration based on micro control system described in the utility model embodiment；
Fig. 2 is the control module chip of the interface detection unit based on micro control system described in the utility model embodiment
Pin schematic diagram；
Fig. 3 (1) is the analog switch of the interface detection unit based on micro control system described in the utility model embodiment
Group chip distribution relation schematic diagram；
Fig. 3 (2) is the analog switch of the interface detection unit based on micro control system described in the utility model embodiment
The analog switch pin figure of three modes of group；
Fig. 4 is 8 DF13 connections of the interface detection unit based on micro control system described in the utility model embodiment
Device chip pin figure；
Fig. 5 (1), Fig. 5 (2), Fig. 5 (3), Fig. 5 (4) are connecing based on micro control system described in the utility model embodiment
4 group interface chip pin figures of the interface connector group of mouth detection unit；
Fig. 6 is the true rms measurement of the interface detection unit based on micro control system described in the utility model embodiment
Circuit diagram；
Fig. 7 is the adjusting chip pin of the interface detection unit based on micro control system described in the utility model embodiment
Figure.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another
It is described, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Fig. 1 to 7, the utility model provides a kind of interface detection unit based on micro control system, including connection
Device group, analog switch group, interface connector group, measuring circuit and control module；
The connector group includes normal signal connector, distinctive signal connector and pumping signal connector；
The analog switch group includes switch input terminal, switch control terminal and output switching terminal；
The signal output end of the normal signal connector is connect with interface connector group signal；
The signal output end of the distinctive signal connector is connect with the switch input terminal signal of analog switch group；
The output switching terminal of the analog switch group is divided into normal measurement end, special measurement end and pumping signal output end,
The normal measurement end is connect with interface connector group signal, and the special measurement end is connect with measuring circuit signal, described to swash
Signal output end is encouraged to connect with the input end signal of pumping signal connector；
The control module is connect with the switch control end signal of analog switch group；
The measuring circuit feedback end is connect with the control module signal.
Further, the interface detection unit based on micro control system further includes shell, and the connector group is fixed
On shell, the analog switch group, intermediate connector interface connector group, measuring circuit, identification circuit and control module are solid
It is scheduled in shell.
Further, the connector group includes cylindrical connector or rectangular connector.
Interface detection unit there are two setting on detection case, one is fixed on the front side board of shell using cylindrical connector,
Another is fixed on the back side panel of the shell using rectangular connector.
Further, the control module is connected by adjusting the switch control end signal of circuit and the analog switch group
It connects.
Further, the adjusting circuit includes adjusting chip, which is ULN2003.
Further, the analog switch group is made of multiple analog switch chips, the analog switch chip model
IM03TS and/or AQW212A and/or LH1502.
Fig. 3 (1) illustrates analog switch pin and distribution relation in analog switch group, and analog switch group is divided into three kinds of moulds
Formula, the first is conventional switch mode, and such as Fig. 3 (2a), second is the pressure-adjusting type analog switch group equipped with divider resistance, is such as schemed
3 (2b), the third is the switching mode for applying excitation, such as Fig. 3 (2c).
Further, the interface connector group includes multiple interface connectors, model PC104.
It is constituted as shown in figure 5, interface connector group connects machine by 4 groups of PC104, and every group includes tetra- PC104 of A, B, C, D
Connector, to realize that the signal of normal detection signal and master control borad connects.
Further, the measuring circuit includes true rms measurement circuit.
Further, the true rms measurement circuit is made of RMS conversion device and peripheral circuit, this is very effective
Value converter model is LTC1966.
Further, the connector group further includes identification signal connector, the identification signal identification signal connector
It is connect by identification circuit with control module signal.
Further, the identification circuit includes that four be correspondingly arranged on four input pins of control module know side by side
Other resistance, four jacks of the signal input connector pass through the input pin of identification resistance access control module respectively.
Further, the connector group includes multiple connector chips, model DF13, has 8 in the present embodiment,
8 DF13 connector chips press its pin assignments, including normal signal connector, distinctive signal connector, pumping signal connect
Connect device and identification signal connector.
The utility model, which realizes, is divided to two-way access two to connect the 256 road test node of detection interface of measurement equipment to be checked
The signal input part of the connector group of mouth detection unit, and signal isolation and signal, which are examined, to be realized to the access with distinctive signal
It surveys.
The interface detection unit of the utility model is fixed on detection case, cooperates detection circuit board and master control in detection case
Device processed uses.
Air equipment needs 8 detection cases to dock with 8 detection interfaces of the air equipment originally, now should
8 detection interfaces of air equipment are divided into 4 groups, every group of detection case, and one is respectively equipped on the front and back panel of the detection case
A interface detection unit is cylindrical connector on front panel, is rectangular connector on rear panel；
The interface detection unit is in order to complete cylindrical connector or rectangular connector to mutual between PC104+ socket between plate
Connection, while active signal channel is realized and is improved, the normal signal end and distinctive signal end of the cylindrical connector on front panel
The normal measurement end of rear analog switch group is interconnected with 4 PC104+ sockets, the normal signal of the rectangular connector on rear panel
The normal measurement end of end and distinctive signal end rear analog switch group is interconnected with 4 PC104+ sockets.
It is additionally provided with voltage transformation module in the interface detection unit, the voltage transformation module input terminal and detection tank shell
Power interface connection, output end are that analog switch group, connector group, interface connector group and control module power supply, the voltage turn
It is in 5V supply voltage that block, which is changed the mold, by the conversion of 28V supply voltage, provides 5V/5A power supply.
According to the air equipment with detection case connecting interface it is found that the active signal sum on rear panel rectangular connector is
16, the active signal sum on front panel cylindrical connector is 22.
Rectangular connector, cylindrical connector rear end 24 road switching channel of analog switch Zu Wei, the analog switch group use
Single-pole double-throw switch (SPDT).
Cylindrical connector connection relation list is as follows on front panel:
Rectangular connector connection relationship is as follows on rear panel:
In above table, rectangle connects on 1~231 foot of cylindrical connector and rectangle air plug pad on round air plug pad
1~231 foot for connecing device is normal signal connector, and the pin connecting with analog switch group is distinctive signal connector, and circle is even
Connecing the pin connecting on device with control box is identification signal connector.
The specific work process of the utility model are as follows:
Connector group receives the output signal of measurement equipment to be checked, and the road signal Fen Sanlu, the first via is connected by normal signal
Device input interface connector group, secondary route distinctive signal connector input the switch input terminal of analog switch group, third routing
The identified circuit input control module of identification signal connector；
Master control borad exports control instruction to control module, so that the opening and closing of control module control analog switch group；
Analog switch group inputs 115V 400Hz to equipment through pumping signal connector under the control of control module at this time
Electric excitation is exchanged, equipment output 36V 400Hz, 12V 400Hz exchange and 6V 400Hz alternating voltage are improved；
The received normal detection signal of normal signal connector is through in interface connector group input master control borad in connector group
Detection, and (i.e. equipment is in control module by adjusting circuit and analog switch group to feedback letter after its output drive for distinctive signal
Number) switching of the meeting through analog switch group, for normal measuring signal through interface connector group input master control borad, special measuring signal is direct
It is input in measuring circuit, is detected by measuring circuit and fed back to control module, then master control borad is fed back to by control module, complete
Space equipment detection, volume easy to operate is convenient, and detection quickly, saves manpower.
And in the utility model identification circuit setting, exported on different channels according to tetra- road signal wire of cable Zhong Zhe
Different signals realizes control module according to identification circuit and identifies that the output signal of measurement equipment to be checked belongs to measurement equipment to be checked
Which channel, and feed back to master control borad, facilitate essence of the analog switch group of interface detection unit under main controller controls
Really opening and closing, while also achieving detection case and detecting flexible exchange when installing in equipment interface.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (9)
1. a kind of interface detection unit based on micro control system, it is characterised in that: including connector group, analog switch group, connect
Mouth connector group, measuring circuit and control module；
The connector group includes normal signal connector, distinctive signal connector and pumping signal connector；
The analog switch group includes switch input terminal, switch control terminal and output switching terminal；
The signal output end of the normal signal connector is connect with interface connector group signal；
The signal output end of the distinctive signal connector is connect with the switch input terminal signal of analog switch group；
The output switching terminal of the analog switch group is divided into normal measurement end, special measurement end and pumping signal output end, described
Normal measurement end is connect with interface connector group signal, and the special measurement end is connect with measuring circuit signal, the excitation letter
Number output end is connect with the input end signal of pumping signal connector；
The control module is connect with the switch control end signal of analog switch group；
The measuring circuit feedback end is connect with the control module signal.
2. the interface detection unit according to claim 1 based on micro control system, it is characterised in that: described to be based on micro-control
The interface detection unit of system processed further includes shell, and the connector group is fixed on shell, and the analog switch group, centre connect
Device interface connector group, measuring circuit, identification circuit and control module is connect to be immobilized in the shell.
3. the interface detection unit according to claim 2 based on micro control system, it is characterised in that: the connector group
Including cylindrical connector or rectangular connector.
4. the interface detection unit according to claim 1 based on micro control system, it is characterised in that: the control module
It is connect by adjusting circuit with the switch control end signal of the analog switch group.
5. the interface detection unit according to claim 4 based on micro control system, it is characterised in that: the adjusting circuit
Including adjusting chip, which is ULN2003.
6. the interface detection unit according to claim 1 based on micro control system, it is characterised in that: the analog switch
Group is made of multiple analog switch chips.
7. the interface detection unit according to claim 1 based on micro control system, it is characterised in that: the measuring circuit
Including true rms measurement circuit, the true rms measurement circuit is made of RMS conversion device and peripheral circuit work.
8. the interface detection unit according to claim 1 based on micro control system, it is characterised in that: the connector group
It further include identification signal connector, the identification signal connector is connect by identification circuit with control module signal.
9. the interface detection unit according to claim 8 based on micro control system, it is characterised in that: the identification circuit
Including four identification resistance being disposed in parallel on control module input pin, four jacks point of the signal input connector
Not Tong Guo one identification resistance access control module input pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821784780.3U CN209102765U (en) | 2018-10-31 | 2018-10-31 | Interface detection unit based on micro control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821784780.3U CN209102765U (en) | 2018-10-31 | 2018-10-31 | Interface detection unit based on micro control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209102765U true CN209102765U (en) | 2019-07-12 |
Family
ID=67157505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821784780.3U Active CN209102765U (en) | 2018-10-31 | 2018-10-31 | Interface detection unit based on micro control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209102765U (en) |
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2018
- 2018-10-31 CN CN201821784780.3U patent/CN209102765U/en active Active
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