CN204556784U - A kind of circuit module measures switching device - Google Patents
A kind of circuit module measures switching device Download PDFInfo
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- CN204556784U CN204556784U CN201420673480.3U CN201420673480U CN204556784U CN 204556784 U CN204556784 U CN 204556784U CN 201420673480 U CN201420673480 U CN 201420673480U CN 204556784 U CN204556784 U CN 204556784U
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- filter
- switching
- circuit
- amplifier
- signal
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Abstract
The utility model provides a kind of circuit module to measure switching device, comprise by switching motherboard, patchplug, power filter device, switching base plate, signal isolating device, multi-tap, stablize fastener, arranged switching base plate and motherboard socket by switching motherboard, motherboard socket is connected with outside detecting instrument; Patchplug, power filter device, signal isolating device are fixed on switching base plate; Patchplug input end is connected with motherboard socket, and the input end of power filter device, signal isolating device is connected with the output terminal of patchplug; Stable fastener is fixed on switching base plate, and stable fastener is provided with the binding groove of fastening measured device, and multi-tap is positioned at the bottom of binding groove, and multi-tap is connected with the output terminal of power filter device and signal isolating device.The utility model can effective built-up circuit module, and has signal isolation, power filter function.
Description
Technical field
The present invention relates to aeronautical maintenance field, particularly a kind of circuit module of machine compact Installation Modes measures switching device.
Background technology
During Avionic Products maintenance, according to failure condition, product bug circuit module need be measured, with looking up the fault electronic devices and components.Avionic Products is compact Installation Modes, is made up of common-use size circuit module, and is arranged in order in order in internal system, and inner structure is unified, dense arrangement, and traditional repair method cannot be measured it, causes plate level to repair difficulty and increases.Existing repair method carries out independent measurement for utilizing common apparatus to malfunctioning module, and resource occupation amount is large, and cost is high, and by extraneous anti-dry large, as circulation interference, natural disturbance, artificial interference.
Conventional repairing mode comprises and utilizes common apparatus, such as oscillograph, digital multimeter etc., directly measuring-signal and utilize transit cable to be drawn by circuit module to measure in circuit module.Owing to limitting by cramped construction design, the survey instruments such as the probe of common apparatus cannot stretch into inside circuit and measure; The circuit module interference of being measured by transit cable is larger.
Summary of the invention
Large in order to overcome prior art resource occupation amount, the problems such as cost is high, poor anti jamming capability, the invention provides one can effective built-up circuit module, and has the circuit module measurement switching device of signal isolation, power filter function.
A kind of circuit module measures switching device, comprises by switching motherboard, patchplug, power filter device, switching base plate, signal isolating device, multi-tap, stablizes fastener.Arranged switching base plate and motherboard socket by switching motherboard, motherboard socket is connected with outside detecting instrument; Patchplug, power filter device, signal isolating device are fixed on switching base plate; Patchplug input end is connected with motherboard socket, and the input end of power filter device, signal isolating device is connected with the output terminal of patchplug; Stable fastener is fixed on switching base plate, and stable fastener is provided with the binding groove of fastening measured device, and multi-tap is positioned at the bottom of binding groove, and multi-tap is connected with the output terminal of power filter device and signal isolating device.
The present invention compared with prior art, have the following advantages: (1) the present invention is that the circuit module with anti-interference structure measures switching device, by being provided with the switching circuit board of signal isolation and power filter function, effectively promote the reliability that the switching of circuit block module is measured.(2) the utility model structure is simple, easy to use, and switching is reliable, and cost is low, and antijamming capability is strong, and therefore practicality is good, is easy to apply, and has larger practical value.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is that circuit module measures switching device structural representation; Wherein Fig. 1 (a) is cut-open view, and Fig. 1 (b) is front view;
Fig. 2 is that signal of the present invention moves towards block diagram;
Fig. 3 is the present invention 2 road electric source filter circuit schematic diagram;
Fig. 4 is the present invention 32 tunnel signal isolation circuit schematic diagram.
Embodiment
Composition graphs 1 (a) and Fig. 1 (b), a kind of circuit module measures switching device, comprises patchplug 2, power filter device 3, switching base plate 4, signal isolating device 5, multi-tap 6, stablizes fastener 7.Arranged switching base plate 4 and motherboard socket by switching motherboard 1 upper bottom surface, bottom surface is provided with the roller that switching device is conveniently moved, and motherboard socket is connected with outside detecting instrument.Described switching base plate 4 is rectangular slab, it is inlaid with patchplug 2, power filter device 3, signal isolating device 5, stablizes fastener 7.Patchplug 2 input end is connected with motherboard socket, and output terminal is connected with the input end of power filter device 3 and signal isolating device 5.Stablizing fastener 7 is fixed on switching base plate 4; Stablize the binding groove 8 that fastener 7 upper bottom surface is provided with fastening measured device, multi-tap 6 is arranged at the bottom of binding groove 8, and multi-tap 6 is connected with the output terminal of power filter device 3 and signal isolating device 5.
Described multi-tap 6 is 150 pin rectangular receptacle.During detection, circuit-under-test plate is inserted on socket 6 after inserting binding groove 8, and patchplug 2 is connected with external detection system.
Composition graphs 2, coupling arrangement comprises patchplug 2, switching base plate 4, multi-tap 6.Clutter in power filter device 3 filter out power transmitting procedure, ensures the stability of power supply, reaches the function suppressing and prevent to disturb, voltage signal is inputed to detected circuit board.Signal isolating device 5 ensures in measured signal transmitting procedure undistorted, improve the electrical separation between the signal of each road, prevent disturb generation, the command signal/detection signal of pick-up unit is transferred to detected circuit plate, simultaneously by the Signal transmissions of detected circuit plate to pick-up unit.Coupling arrangement for realizing the transmission of supply voltage between test macro and system under test (SUT), and realizes effective passage of command signal/detection signal.
Composition graphs 3, filter comprises 2 road electric source filter circuits, and every road electric source filter circuit is made up of following circuit component: current-limiting resistance one end connects the input end of power supply, and the other end connects biasing resistor one end and coupling capacitance one end respectively; The biasing resistor other end is by filter capacitor ground connection, and the biasing resistor other end connects the reverse input end of filter amplifier; The coupling capacitance other end connects filter amplifier output terminal and pull-up resistor one end respectively; The pull-up resistor other end connects filter amplifier input end and divider resistance one end in the same way respectively; Divider resistance other end ground connection; Filtered supply voltage is transferred to tested device by connected system by filter amplifier output terminal.
Wherein first via electric source filter circuit first current-limiting resistance R11 one end connects the input end of power supply 1, and the R11 other end connects first biasing resistor R21 one end and first coupling capacitance C11 one end respectively; The first biasing resistor R21 other end is by the first filter capacitor C21 ground connection, and the first biasing resistor R21 other end connects the reverse input end of the first filter amplifier A11; The first coupling capacitance C21 other end connects the first filter amplifier A11 output terminal and first pull-up resistor R31 one end respectively; The first pull-up resistor R31 other end connects the first filter amplifier A11 input end and first divider resistance R41 one end in the same way respectively; First divider resistance R41 other end ground connection; Filtered supply voltage is transferred to tested device by connected system by the first filter amplifier A11 output terminal.
Wherein second road electric source filter circuit second current-limiting resistance R12 one end connects the input end of power supply 1, and the R12 other end connects second biasing resistor R22 one end and second coupling capacitance C12 one end respectively; The second biasing resistor R22 other end is by the second filter capacitor C22 ground connection, and the second biasing resistor R22 other end connects the reverse input end of the second filter amplifier A12; The second coupling capacitance C22 other end connects the second filter amplifier A12 output terminal and second pull-up resistor R32 one end respectively; The second pull-up resistor R32 other end connects the second filter amplifier A11 input end and second divider resistance R42 one end in the same way respectively; Second divider resistance R42 other end ground connection; Filtered supply voltage is transferred to tested device by connected system by the second filter amplifier A12 output terminal.
Described R11=R12=R21=R22=1k Ω ~ 100k Ω; R31=R32=R41=R42=10k Ω ~ 10M Ω; C11=C12==0.01 μ F ~ 1 μ F; C21=C22=2f/ (π × biasing resistor); The technical indicator of A11, A12 is V
iO≤ 10mV, I
iO≤ 70nA, I
iB≤ 300nA.
Composition graphs 4, signal isolating device comprises 32 tunnel signal isolation circuit, and every road signal isolation circuit is made up of following circuit component: current-limiting resistance (R
sI1, R
sI2, R
sI3...R
sI32) one end link order/detection signal electrode input end; Current-limiting resistance (R
sI1, R
sI2, R
sI3...R
sI32) other end connects OP amplifier (OP1, OP2, OP3...OP32) positive input; OP amplifier (OP1, OP2, OP3...OP32) reverse input end connects OP amplifier out (OP1, OP2, OP3...OP32) and coupling mechanism (C31, C32, C32...C331, C332) input end; Order/detection signal after isolation is transferred to tested device by connected system by coupling mechanism (C31, C32, C32...C331, C332) output terminal; Coupling mechanism (C31, C32, C32...C331, C332) inputs negative pole, coupling mechanism (C31, C32, C32...C331, C332) output negative pole, instruction/detection signal negative pole connect ground respectively.
Wherein R
sI1=R
sI2=R
sI3=...R
sI32=1k Ω ~ 1M Ω; The technical indicator of OP amplifier (OP1, OP2, OP3...OP32) is V
iO≤ 2mV, I
iO≤ 25nA, I
iB≤ 100nA; The technical indicator of coupling mechanism (C31, C32, C32...C331, C332) is voltage ratio=1, frequency of operation≤400Hz, no-load current≤100mA.
Claims (6)
1. a circuit module measures switching device, comprise by switching motherboard (1), patchplug (2), power filter device (3), switching base plate (4), signal isolating device (5), multi-tap (6), stablize fastener (7), it is characterized in that
Arranged switching base plate (4) and motherboard socket by switching motherboard (1), motherboard socket is connected with outside detecting instrument;
Patchplug (2), power filter device (3), signal isolating device (5) are fixed in switching base plate (4); Patchplug (2) input end is connected with motherboard socket, and the input end of power filter device (3), signal isolating device (5) is connected with the output terminal of patchplug (2);
Stablizing fastener (7) is fixed in switching base plate (4), stablize the binding groove (8) that fastener (7) is provided with fastening measured device, multi-tap (6) is positioned at the bottom of binding groove (8), and multi-tap (6) is connected with the output terminal of power filter device (3) and signal isolating device (5).
2. circuit module according to claim 1 measures switching device, and it is characterized in that, multi-tap (6) is 150 pin rectangular receptacle.
3. circuit module according to claim 1 measures switching device, and it is characterized in that, power filter device (3) comprises 2 road electric source filter circuits, and every road electric source filter circuit is made up of following circuit component:
Current-limiting resistance one end connects the input end of power supply, and the other end connects biasing resistor one end and coupling capacitance one end respectively; The biasing resistor other end is by filter capacitor ground connection, and the biasing resistor other end connects the reverse input end of filter amplifier; The coupling capacitance other end connects filter amplifier output terminal and pull-up resistor one end respectively; The pull-up resistor other end connects filter amplifier input end and divider resistance one end in the same way respectively; Divider resistance other end ground connection; Filtered supply voltage is transferred to tested device by connected system by filter amplifier output terminal.
4. circuit module according to claim 3 measures switching device, and it is characterized in that, the parameter of the circuit component in the electric source filter circuit of every road is:
Current-limiting resistance=biasing resistor=1k Ω ~ 100k Ω; Pull-up resistor=divider resistance=10k Ω ~ 10M Ω; Coupling capacitance=2f/ (π × biasing resistor); μ F ~ 1, filter capacitor=0.01 μ F; Filter amplifier: V
iO≤ 10mV, I
iO≤ 70nA, I
iB≤ 300nA.
5. circuit module according to claim 1 measures switching device, and it is characterized in that, signal isolating device (5) comprises 32 tunnel signal isolation circuit, and every road signal isolation circuit is made up of following circuit component:
Current-limiting resistance one end link order/detection signal electrode input end; The current-limiting resistance other end connects OP amplifier positive input; OP amplifier inverting input connects OP amplifier out and coupler input; Order/detection signal after isolation is transferred to tested device by connected system by coupler output; Coupling mechanism input negative pole, coupling mechanism output negative pole, instruction/detection signal negative pole connect ground respectively.
6. circuit module according to claim 5 measures switching device, and it is characterized in that, the circuit element parameter in the signal isolation circuit of every road is:
Current-limiting resistance=1k Ω ~ 1M Ω; OP amplifier: V
iO≤ 2mV, I
iO≤ 25nA, I
iB≤ 100nA; Coupling mechanism: voltage ratio=1, frequency of operation≤400Hz, no-load current≤100mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420673480.3U CN204556784U (en) | 2014-11-12 | 2014-11-12 | A kind of circuit module measures switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420673480.3U CN204556784U (en) | 2014-11-12 | 2014-11-12 | A kind of circuit module measures switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204556784U true CN204556784U (en) | 2015-08-12 |
Family
ID=53831878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420673480.3U Expired - Fee Related CN204556784U (en) | 2014-11-12 | 2014-11-12 | A kind of circuit module measures switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204556784U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375076A (en) * | 2014-11-12 | 2015-02-25 | 中国人民解放军第五三一一工厂 | Circuit module measurement switching device |
| CN107589279A (en) * | 2017-08-11 | 2018-01-16 | 中国人民解放军63686部队 | The test adaptor device of small spacing junction block |
-
2014
- 2014-11-12 CN CN201420673480.3U patent/CN204556784U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375076A (en) * | 2014-11-12 | 2015-02-25 | 中国人民解放军第五三一一工厂 | Circuit module measurement switching device |
| CN104375076B (en) * | 2014-11-12 | 2018-09-04 | 中国人民解放军第五三一一工厂 | A kind of circuit module measurement switching device |
| CN107589279A (en) * | 2017-08-11 | 2018-01-16 | 中国人民解放军63686部队 | The test adaptor device of small spacing junction block |
| CN107589279B (en) * | 2017-08-11 | 2020-01-14 | 中国人民解放军63686部队 | Test adapter of small-spacing wire holder |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20181112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |