CN201955104U

CN201955104U - Signal conditioning box of transient measuring instrument

Info

Publication number: CN201955104U
Application number: CN2010206309463U
Authority: CN
Inventors: 邱国廷; 李金鹏
Original assignee: BEIJING XINFENG MACHINERY FACTORY
Current assignee: Beijing Aerospace Xinfeng Machinery Equipment Co Ltd
Priority date: 2010-11-29
Filing date: 2010-11-29
Publication date: 2011-08-31
Anticipated expiration: 2020-11-29

Abstract

The utility model provides a signal conditioning box of a transient measuring instrument, which comprises a signal conditioning mother board, wherein a plurality of amplifying plugging modules and filtering plugging modules can be plugged or disassembled on a channel of the signal conditioning mother board; the whole channel is an open circuit; however, a circuit is arranged on the channel and is respectively connected with the signal input end and the signal output end; and the amplifying plugging modules and the filtering plugging modules are internally provided with independent amplifying and filtering circuits. When the amplifying plugging modules and the filtering plugging modules are plugged on the signal conditioning mother board, the circuit in the amplifying plugging modules is connected in series with the circuit in the filtering plugging modules and is also connected with the circuit on the channel, so that the whole channel forms a closed circuit, the signal is introduced by a sensor, and the signal conditioning box realizes the signal amplification and filtering and then the signal is sent out. The signal conditioning box is mainly used for amplification and filtering of the electric signals.

Description

A kind of signal process box of instantaneous measurement instrument

Technical field

The utility model relates to a kind of instantaneous measurement instrument, particularly a kind of signal process box of instantaneous measurement instrument.

Background technology

At present, the instantaneous measurement instrument generally comprises single-chip microcomputer or industrial computer, signal process box, sensor, and signal process box comprises panel, signal regulating panel.There is signal to go on the panel and goes out to patch base with signal, signal regulating panel generally adopts dull and stereotyped integral structure, amplification, filtering circuit directly are welded on the signal regulating panel in the mode of Surface Mount components and parts, form fixing amplification channel and filtering channel, sensor is gone into to patch on the base by the signal that connector is connected in panel, import sensor signal into, amplification on the signal regulating panel, filtering circuit amplify the sensor signal that collects and Filtering Processing, import the signal after handling into single-chip microcomputer or industrial computer carries out acquisition process.Because the amplification on the signal regulating panel in the sort signal conditioning case, the circuit elements device of filtering circuit are welding fabrications, amplification, filtering channel are fixed, so can only carry out a kind of processing of mode to the sensor signal in a certain particular range, if will realize the outer sensor signal of particular range is handled, can only change signal regulating panel, can not realize simultaneously difference amplification, the filtering of multiple sensors signal are regulated, so general instantaneous measurement instrument versatility is relatively poor, design cost height when handling multiple signal.

The utility model content

For overcoming the above problems, the utility model provides a kind of signal process box of instantaneous measurement instrument, comprise the signal regulating panel motherboard, it is characterized in that being being connected with on the signal regulating panel motherboard that some dismountable amplifications patch module and some dismountable filtering patches module.

Described signal regulating panel motherboard is some, is contained in the guide tracked draw-in groove in the signal process box.

Described amplification patches connecting mode that module and filtering patches module and signal condition motherboard for pegging graft, and this inserting mode can be pin and pegs graft.

Described signal process box comprises that also linear power supply, signal go out to patch base and signal goes into to patch base.

Described signal condition motherboard is provided with point detection signal and signal inserts terminal; Each signal inserts the corresponding passage of terminal, and this passage has circuit to go out to patch base with signal access terminal with signal respectively and links to each other for opening circuit on the passage; Amplify and to patch module and filtering and patch module and be plugged on the above-mentioned passage, amplify and patch module and filtering and patch the circuit that is provided with in the module on independently amplification, filtering circuit and the passage and link.

It is 12,22 or 36 that signal on the described signal condition motherboard inserts terminal, and its passage is arranged side by side.

This signal process box specifically can comprise (as shown in Figure 1): linear power supply 1, and signal goes out to patch base 2, signal regulating panel motherboard 3, signal goes into to patch base 4, and some dismountable amplifications patch module 5 and some dismountable filtering patches module 6.Signal condition motherboard 3 is connected in the signal process box by the guide tracked draw-in groove in the signal process box, on the signal regulating panel motherboard 3 amplification is arranged, filtering patches module and patches pin 31, point detection signal 32, signal inserts terminal 33, amplify patch module 5 and filtering patch have on the module 6 with the signal condition motherboard on patch pin 31

corresponding jointing holes

51 or 61, amplify and to patch module 5 and filtering and patch module 6 by jointing holes 51 or jointing holes 61 with patch pin 31 and be plugged on the signal regulating panel motherboard 3, amplify and patch module 5 and filtering and patch to be provided with in the module 6 independently and amplify, filtering circuit.During use, sensor is connected in signal by connector goes into to patch on the base 4, signal is gone into to patch base 4 and signal and is inserted between the terminal 33 and connect by cable, each signal inserts arbitrary passage among the terminal 33 corresponding Y1-Y11, this passage is for opening circuit, but having circuit to go out to patch base 2 with signal access terminal 33 with signal respectively on the passage links to each other, select specific amplification to patch module 5 according to signal amplification factor, select specific filtering to patch module 6 according to the frequency of clutter, be inserted on the signal regulating panel motherboard 3, amplify to patch that circuit and filtering in the module 5 patch circuit series connection in the module 6 and to link to each other and make whole passage formation path with circuit on the passage, import sensor signal into, realize that signal amplifies, spread out of after the Filtering Processing.Also can realize separately amplifying or the filtering signal processing capacity, amplify when independent grafting and patch module 5 or filtering when patching module 6, must carry out short circuit, make passage form path the pin 31 that patches of another module correspondence.Can according to the different qualities of front end sensors signal to amplification patch module 5, filtering patches module 6 and selects.

Can handle simultaneously by the physics collection connection of two or more signal regulating panel motherboards 3 being realized more multichannel signal.

Description of drawings

Fig. 1 is the signal process box structural representation;

Fig. 2 amplifies or filtering patches module and patches the face synoptic diagram;

Embodiment

Example 1 8MPa pressure signal amplifies 100 times of filtering 50Hz-60Hz acquisition process examples

Pressure transducer converts pressure signal to the electric signal of millivolt magnitude, go into to patch base 4 by the signal that twisted-pair feeder is connected on the conditioning case, signal is gone into to patch base 4 and signal and is inserted between the terminal 33 and connect by cable, selecting enlargement factor is that the filtering that 100 times amplification patches module 5 and power frequency filtering 50Hz-60Hz patches module 6, and with them by jointing holes 51 or jointing holes 61 with amplify, patching pin 31 is plugged on the signal condition motherboard Y1 passage, electric signal is by motherboard bus and amplify and to patch the circuit transmission that module 5 and filtering patches in the module 6 and go out to patch base 2 to signal, go out to patch base 2 by pci bus and signal and be connected and transfer signals in the capture card, finish signal condition and acquisition function.

Example 24 tunnel 800 degree thermocouple signals amplify 50 times of acquisition process examples

Temperature signal is converted to the electric signal of millivolt magnitude by thermocouple sensor, go into to patch base 4 by the signal that twisted-pair feeder is connected on the conditioning case, going into to patch base 4 and signal by signal inserts between the terminal 33 and connects by cable, the selection enlargement factor is that 50 times amplification patches module 5, and with them by jointing holes 51 with patch pin 31 and be connected on the signal condition motherboard Y1-Y4 passage, the pin 31 that patches that filtering is patched the module correspondence carries out short circuit.Signal is transferred to signal by motherboard bus goes out to patch base 2, transfer signals in the capture card, finish signal condition and acquisition function by pci bus.

Example 3 22 paths (8 road pressure signals, 3 road temperature signals, 5 road thrust signals, 6 road direct current signals) signals collecting example

By guide tracked draw-in groove in the adjustment conditioning case, place two block signal conditioning plate motherboards, realize the physics collection connection between the motherboard, the amplification of the respective channel of selection insertion simultaneously patches module 5 and filtering patches module 6.For 8 road pressure signals, selecting 8 enlargement factors respectively is that the filtering that 100 times amplification patches module 5 and power frequency filtering 50Hz-60Hz patches module 6, and with them by jointing

holes

51 or 61 and patch pin 31 and be plugged into block signal conditioning motherboard Y1-Y8 passage; For 3 road temperature signals, selecting three enlargement factors is that 50 times amplification patches module 5, and with them by jointing holes 51 with patch the Y9-Y11 passage that pin 31 is plugged into same signal condition motherboard, the pin 31 that patches that filtering is patched the module correspondence carries out short circuit; For 5 road thrust signals, selecting 5 respectively, to select enlargement factors be that the filtering that 200 times amplification patches module 5 and power frequency filtering 50Hz-70Hz patches module 6, and with them by jointing

holes

51 or 61 and patch the Y1-Y5 passage that pin 31 is connected to another signal condition motherboard; Temperature signal is converted to the electric signal of millivolt magnitude by thermocouple sensor, go into to patch base 4 by the signal that twisted-pair feeder is connected on the conditioning case, going into to patch base 4 and signal by signal inserts between the terminal 33 and connects by cable, the selection enlargement factor is that 50 times amplification patches module 5, and with them by jointing holes 51 with patch pin 31 and be connected to Y1-Y4 passage on the signal condition motherboard, the module that patches of this another module correspondence is patched pin 31 and carries out short circuit; All signals will patch module 5, filtering by motherboard bus and amplification and patch module 6 and be transferred to signal and go out to patch base 2, transfer signals in the capture card by pci bus, finish signal condition and acquisition function.

Claims

1. the signal process box of an instantaneous measurement instrument comprises the signal regulating panel motherboard, it is characterized in that being connected with on the signal regulating panel motherboard that some dismountable amplifications patch module and some dismountable filtering patches module.

2. the signal process box of instantaneous measurement instrument as claimed in claim 1 is characterized in that the signal regulating panel motherboard is some, is contained in the guide tracked draw-in groove in the signal process box.

3. the signal process box of instantaneous measurement instrument as claimed in claim 1 is characterized in that described amplification patches module and filtering patches the connecting mode of module and signal condition motherboard for pegging graft.

4. the signal process box of instantaneous measurement instrument as claimed in claim 3 is characterized in that described inserting mode is that pin is pegged graft.

5. the signal process box of instantaneous measurement instrument as claimed in claim 1 is characterized in that signal process box comprises that also linear power supply, signal go out to patch base and signal goes into to patch base.

6. the signal process box of instantaneous measurement instrument as claimed in claim 5 is characterized in that the signal condition motherboard is provided with point detection signal and signal inserts terminal; Each signal inserts the corresponding passage of terminal, and this passage has circuit to go out to patch base with signal access terminal with signal respectively and links to each other for opening circuit on the passage; Amplify and to patch module and filtering and patch module and be plugged on the above-mentioned passage, amplify and patch module and filtering and patch the circuit that is provided with in the module on independently amplification, filtering circuit and the passage and link.

7. the signal process box of instantaneous measurement instrument as claimed in claim 6 is characterized in that the signal access terminal on the signal condition motherboard is 12,22 or 36, and its passage is arranged side by side.