CN103760601A - Rock burst microquake signal processing circuit - Google Patents
Rock burst microquake signal processing circuit Download PDFInfo
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- CN103760601A CN103760601A CN201410018848.7A CN201410018848A CN103760601A CN 103760601 A CN103760601 A CN 103760601A CN 201410018848 A CN201410018848 A CN 201410018848A CN 103760601 A CN103760601 A CN 103760601A
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Abstract
The invention discloses a rock burst microquake signal processing circuit, and belongs to a microquake signal processing circuit. The signal processing circuit comprises a 24V switch power module U1, a boosting module U2, a voltage automatic regulating and sensor short circuit detection module U3, a sensor U4 and a sensor signal amplification filter module U5. The 24V switch power module U1 is connected with the voltage automatic regulating and sensor short circuit detection module U3 through the boosting module U2, the sensor short circuit detection module U3 is connected with the sensor U4, the sensor U4 is connected with the sensor signal amplification filter module U5, and the sensor signal amplification filter module U5 electrically isolates the input end from the output end through double optocouplers. The modules are connected in a cascade mode. Each rock burst microquake signal processing circuit picks up one path of rock burst microquake signals, the range of input currents is from 0mA to 4mA, and output voltages can be amplified to +/-10V. By the adoption of the rock burst microquake signal processing circuit, stability of monitoring signals is good, anti-interference capacity is high, and reliability and accuracy for safely monitoring underground microquake signals are improved.
Description
Technical field
The present invention relates to a kind of microseismic signals treatment circuit, particularly a kind of impulsion pressure microseismic signals treatment circuit.
Background technology
Coal petrography destroys under effect of stress, can cause a series of mine disasters such as roof caving, tunnel obstruction, water bursting in mine, coal and Gas Outburst, rock burst and personal injury after rock breakdown.Ore deposit shake has become one of major impetus disaster threatening mine production.A kind of impulsion pressure microseismic signals treatment circuit is mainly used to processes sensor monitoring coal petrography the break vibration signal that produces or the vibration signal of other objects, the accuracy of its processing signals, stationarity are for accurate forecast and effectively control mine disaster prerequisite guarantee is provided, and are one of ingredients important in microseism real-time monitoring system.
Summary of the invention
The object of the present invention is to provide a kind of impulsion pressure microseismic signals treatment circuit of stable and reliable for performance, strong interference immunity.
The technical scheme that technical solution problem of the present invention adopts is: this signal processing circuit comprises: 24V switch power module U1, boost module U2, voltage regulate and short circuit sensor detection module U3, sensor U4 and sensor signal amplification filtering module U5 automatically; 24V switch power module U1 automatically regulates with voltage through boost module U2 and short circuit sensor detection module U3 is connected, short circuit sensor detection module U3 is connected with sensor U4, sensor U4 is connected with sensor signal amplification filtering module U5, and sensor signal amplification filtering module U5 adopts two optocouplers to realize input end and output terminal electrical isolation; Each module connected mode is that cascade connects.
Described sensor signal amplification filtering module U5 comprises: two optocoupler analog signal isolation module U51, voltage follower and signal frequency detection module U52 and filter shape module U53, each module connected mode is that cascade connects.
Described filter shape module U53 comprises: the active high-pass filtering module of second order U531, single order amplification module U532, step low-pass active power filtering module U533, enlargement factor are selected module U534,50Hz filtration module U535 and second order high-pass filtering module U536, and each module connected mode is that cascade connects.
The automatic adjusting of described voltage and short circuit sensor detection module be not to being automatically adjusted to 40～42v output voltage higher than 64v input voltage.
Described voltage regulates and short circuit sensor detection module detecting sensor short-circuit conditions automatically.
Described sensor signal amplification filtering module adopts two optocouplers to realize input end and output terminal electrical isolation.
Described voltage follower and signal deteching circuit module detect and have or not sensor signal input.
Beneficial effect, owing to having adopted such scheme, by the amplification of microseismic signals, filtering are processed, the safety in production that the present invention is colliery provides safe and reliable data, reduce the loss that colliery microseism brings, have the advantages that anti-interference row is strong, signal to noise ratio (S/N ratio) is high, stationarity is good, reliability is strong.After circuit is connected, 24V switch power module U1, for the present embodiment provides 24V DC voltage, through boost module U2, boosts to working sensor voltage 48V by input voltage 24V.Voltage regulates automatically and short circuit sensor detection module U3 can prevent the phenomenon that boost module damage causes sensor supply voltage rising infringement sensor, and can detect short circuit sensor problem.Voltage automatically regulates and short circuit sensor detection module U3 to take comparer U102 pin be reference point.When power input voltage raises, electric current increases through triode T2, and triode T2 emitter voltage rises, make triode T1 base voltage increase, cause triode T1 emitter current to increase, thereby reduce triode T1 emitter voltage, realize voltage automatic regulation function.When sensor is short-circuited fault, triode T2 emitter voltage increases, and triode T3 base voltage is raise, and causes triode T3 conducting, and it is green that red and green color light emitting diode D20 is, and with this, represents the sensor fault that is short-circuited.When sensor U4 monitors, coal seam is micro-to shake during signal, sensor U4 is usingd resistance R 60 both end voltage by the micro-signal that shakes in coal seam and is entered in filter shape module U53 two optocoupler analog signal isolation circuit U 531 optocoupler O1 as source signal, microseismic signals is by optocoupler O1 coupling output, enter operational amplifier U1A output voltage, make triode Q1 conducting, through resistance R 16, produce voltage and make optocoupler O2 conducting, at optocoupler O2, form feedback, realize the linear Amplification and insulation to microseismic signals.Triode Q2 and resistance R 13, R5, red and green color light emitting diode D3 form signal deteching circuit, can detect 0～500Hz input signal.During no signal, not conducting of triode Q2, red and green color light emitting diode D3 takes on a red color; While having signal input, triode Q2 conducting, red and green color light emitting diode D3 lights simultaneously, is micro-yellow.The microseismic signals of processing through voltage follower and signal deteching circuit is Shaping Module U53 output ± 10V voltage signal after filtering again.
Advantage: each impulsion pressure microseismic signals treatment circuit picks up a road impulsion pressure microseismic signals, and input current scope is 0～4mA, can be amplified to ± 10V of output voltage.Process colliery microseismic signals, can realize the target of the good and strong interference immunity of processing signals stationarity, reliability and the accuracy of raising underground safety monitoring microseismic signals.
Accompanying drawing explanation
Fig. 1 is the theory diagram of impulsion pressure microseismic signals treatment circuit of the present invention.
Fig. 2 is the theory diagram of sensor signal filtering and amplifying circuit of the present invention.
Fig. 3 is the theory diagram of filtering shaping circuit of the present invention.
Fig. 4 is the circuit diagram of boost module of the present invention.
Fig. 5 is the circuit diagram that voltage of the present invention regulates automatically and short circuit sensor detects.
Fig. 6 is the circuit diagram of filtering shaping circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing and experimental example, describe the present invention.
Embodiment 1: in Fig. 1, a kind of impulsion pressure microseismic signals treatment circuit is automatically regulated by 24V switch power module U1, boost module U2, voltage and short circuit sensor detection module U3, sensor U4, sensor signal amplification filtering module U5 form.24V switch power module U1, for the present embodiment provides 24V DC voltage, through boost module U2, boosts to working sensor voltage 48V by input voltage 24V.Voltage regulates automatically and thereby short circuit sensor detection module U3 can prevent the phenomenon that boost module damage causes sensor supply voltage rising infringement sensor, and can detect short circuit sensor problem.0～4mA sensor current monitor signal is as the input of sensor signal amplification filtering module U5, and U5 adopts two optocouplers to realize input end and output terminal electrical isolation, after sensor filtering shaping circuit, and the voltage signal of output ± 10V.
The automatic adjusting of described voltage and short circuit sensor detection module be not to being automatically adjusted to 40～42v output voltage higher than 64v input voltage.
Described voltage regulates and short circuit sensor detection module detecting sensor short-circuit conditions automatically.
Described sensor signal amplification filtering module adopts two optocouplers to realize input end and output terminal electrical isolation.
Described voltage follower and signal deteching circuit module detect and have or not sensor signal input.
In Fig. 2, described sensor signal amplification filtering module U5 is comprised of two optocoupler analog signal isolation module U51, voltage follower and signal frequency detection module U52, filter shape module U53.
In Fig. 3, described filter shape module U53 selects module U534,50Hz filtration module U535, second order high-pass filtering module U536 to form by the active high-pass filtering module of second order U531, single order amplification module U532, step low-pass active power filtering module U533, enlargement factor, realizes sensor signal amplification filtering.
In Fig. 4, described boost module U2 is by the chip U9 that boosts, capacitor C 50～C56, resistance R 52～R54, diode V1, and inductance L 6 forms, and realizes input voltage 24V is boosted to working sensor voltage 48V.After electrochemical capacitor C53, C54, C55 parallel connection, be connected between 24V Switching Power Supply input end+24V_S and ground SGND.Boost chip U91 pin through resistance R 53, capacitor C 56 ground connection.The chip U95 pin that boosts meets 24V Switching Power Supply input end+24V_S.The chip U94 pin that boosts connects output terminal through diode V1.Inductance L 6 is connected on boosts between chip U94 pin, 5 pin.Boost between chip U92 pin connecting resistance R52, R54.Resistance R 52 another termination diode cathodes.Resistance R 54 other end ground connection SGND.After capacitor C 50～C52 parallel connection, connect between boost module output terminal+48V and ground SGND.The described chip U9 model of boosting is UC2577.
In Fig. 5, described voltage automatically regulates and short circuit sensor detection module U3 is comprised of the automatic adjustment module of voltage and short circuit sensor detection module two parts, by operational amplifier U10, triode T1～T3, resistance R 55～R76, adjustable resistance W5, diode D7～D9, D12, D15～D17, TVS4, red and green color light emitting diode D20 forms.The automatic adjustment module of voltage is by operational amplifier U10, resistance R 55～R59, R64; R67～R72, R74; diode D8, D16; triode T1, T2 form; boost module can be caused boost module output 64V be automatically adjusted to 40～42V voltage with interior voltage because chip or circuit damage, realize sensor overvoltage protection automatic regulation function.Short circuit sensor detection module is by triode T3, resistance R 60～R62, R65, R66, R73, R75, R76, adjustable resistance W5, diode D9, D12, D15, D17, TVS4, red and green color light emitting diode D20 forms, and can realize the function of detecting sensor short circuit.After resistance R 55～R58 cascade between connect+48V input end and triode T12 pin.Triode T1 emitter connects diode D7 negative electrode through resistance R 59.Between diode D7 anode connecting resistance R68 and R70.Resistance R 67 connects between triode T1 emitter and T2 base stage.Resistance R 72 connects between triode T2 base stage and ground SGND.Triode T1 base stage connects triode T2 collector.Resistance R 68 1 termination operational amplifier U102 pin, between other end connecting resistance R70 and diode D7 anode.Diode D7 negative electrode connects triode T2 emitter.Between operational amplifier U103 pin connecting resistance R64 and R71.Resistance R 64 another termination triode T2 emitters.Resistance R 71 other end ground connection SGND.Between operational amplifier U104 pin connecting resistance R74 and diode D16 anode.Resistance R 74 other end ground connection SGND.Operational amplifier U107 pin divides two-way to connect respectively diode D16 negative electrode and D8 anode.Diode D16 anode is through resistance R 74 ground connection SGND.Connect+48V of diode D8 negative electrode input voltage.Operational amplifier U106 pin connects triode T1 base stage through resistance R 69.Resistance R 66 connect triode T3 collector and+48V input voltage between.Triode T3 base stage connects adjustable resistance W5 tap.Triode T3 emitter connects red and green color light emitting diode D20 Green light-emitting diodes tube anode.Diode D15 negative electrode connects triode T3 collector, and anode connects red light emitting diodes anode in red and green color light emitting diode D20.Red and green color light emitting diode D20 common cathode ground connection SGND.Resistance R 63 1 termination triode T2 emitters, the stiff end of another termination adjustable resistance W5.Another stiff end of resistance R 73 1 termination adjustable resistance W5, other end ground connection SGND.Between diode D9, D12, D17 series connection triode T2 emitter and ground SGND.Resistance R 65 connects between triode T2 emitter and sensor input signal S_AIN.Resistance R 60 connects between triode T2 emitter and sensor input signal G_AIN.After resistance R 61, R62 series connection, connect between sensor input signal G_AIN and output signal AIN+.After resistance R 75, R76 series connection, connect between output signal AIN-and ground SGND.Described operational amplifier U10 model is OP2177.
In Fig. 6, described two optocoupler analog signal isolation module U51 are by photoelectrical coupler O1, O2, operational amplifier U1A, triode Q1 and resistance R 11, R3, R4, R12, R16, R19, R20, adjustable resistance W2, capacitor C 3, C6, C7, C11, C15, C18, voltage stabilizing diode D1, D2 form, and adopt two optocouplers to realize the electrical isolation of input end and output terminal.Photoelectrical coupler O11 pin and 2 pin meet respectively sensor signal S_AIN and G_AIN, and photoelectrical coupler O13 pin is through connect-12V of resistance R 11 voltage, photoelectrical coupler O14 pin series voltage stabilizing diode D1, connect-12V of D2 power supply.Photoelectrical coupler O14 pin connects photoelectrical coupler O23 pin, and photoelectrical coupler O24 pin is through connect+12V of resistance R 4 voltage, and photoelectrical coupler O21 pin connects triode Q1 emitter through resistance R 12, and photoelectrical coupler O22 pin connects triode Q1 emitter through resistance R 16.Operational amplifier U1A2 foot meridian capacitor C11 ground connection GND, capacitor C 6 is connected between operational amplifier U1A1 pin and 2 pin, U1A3 pin ground connection GND, resistance R 3 be connected on operational amplifier U1A8 pin and+12V voltage between, after capacitor C 3, C7 parallel connection, be connected on operational amplifier U1A8 pin and ground GND between.Operational amplifier U1A4 pin, through connect-12V of resistance R 19 voltage, is connected on after capacitor C 15, C18 parallel connection between operational amplifier U1A4 pin and ground GND.Operational amplifier U1A1 pin connects triode Q1 base stage, connect+12V of triode Q1 collector voltage, and Q1 emitter is successively through resistance R 16, adjustable resistance W2, connect-12V of resistance R 20 voltage.Two optocoupler analog signal isolation circuit U 51 have realized input end and output terminal electrical isolation and amplification.The model of described operational amplifier U1A is OP2177.
In Fig. 6, described voltage follower and signal detection module U52 are divided into voltage follower and signal detection module two parts, and by operational amplifier U1B, triode Q2, resistance R 13, R5, red and green color light emitting diode D3 forms.Operational amplifier U1B5 pin is connected on two optocoupler analog signal isolation module U531 optocoupler O22 pin, and operational amplifier U1B6 pin connects U1B7 pin, forms voltage follower, and front late-class circuit is played to buffer action.Signal detection module is by triode Q2, resistance R 13, R5, and red and green color light emitting diode D3 forms, and can be used for detection and has or not sensor signal input.Triode Q2 base stage connects red diode anode in red and green color light emitting diode D3 through resistance R 13, Q2 emitter is through connect+12V of resistance R 5 voltage, Q2 collector connects red and green color light emitting diode D3 Green diode anode, red and green color light emitting diode D3 plus earth GND.Described operational amplifier U1B model is OP2177.
As shown in Figure 3, the filter shape module U53 of the present embodiment selects module U534,50Hz filtration module U535, second order high-pass filtering module U536 to form by the active high-pass filtering module of second order U531, single order amplification module U532, step low-pass active power filtering module U533, enlargement factor, realizes sensor signal amplification filtering.
In Fig. 6, U531 is by operational amplifier U2A for the active high-pass filtering module of described second order, capacitor C 1, C4, C9, C10, C13, C16, and resistance R 1, R7, R14, R17 form.Capacitor C 9 is connected between Q2 emitter and resistance R 7.Capacitor C 10 1 ends are connected between capacitor C 9 and resistance R 7, another termination operational amplifier U2A3 pin.Resistance R 14 connects between operational amplifier U2A3 pin and ground GND.Operational amplifier U2A2 pin connects U2A1 pin, and operational amplifier U2A8 pin is through connect+12V of resistance R 1 voltage.Operational amplifier U2A4 pin is through connect-12V of resistance R 17 voltage.After capacitor C 13, C16 parallel connection, be connected between operational amplifier U2A4 pin and ground GND.Described operational amplifier U2A model is OP2177.
In Fig. 6, described single order amplification module U532 is by operational amplifier U2B, resistance R 6, R8, R15, and adjustable resistance W1 forms.Resistance R 8 is connected between operational amplifier U2A1 pin and U2B6 pin, and resistance R 6 is connected between operational amplifier U2B6 pin and adjustable resistance W1, and another stiff end of the tap of adjustable resistance W1 and adjustable resistance W1 is connected between resistance R 6 and operational amplifier U2B7 pin.Described operational amplifier U2B model is OP2177.
In Fig. 6, described step low-pass active power filtering module U533 is by operational amplifier U3B, resistance R 2, R9, R10, R18, and capacitor C 2, C5, C8, C12, C14, C17 form.Resistance R 9 is connected between operational amplifier U2B7 pin and resistance R 10.Resistance R 10 another termination operational amplifier U3B5 pin, operational amplifier U3B6 pin connects capacitor C 8, between capacitor C 8 other end connecting resistance R9 and R10, operational amplifier U3B5 foot meridian capacitor C12 ground connection GND, operational amplifier U3B6 pin and U3B7 pin join, operational amplifier U3B8 pin is through connect+12V of resistance R 2 voltage, and operational amplifier U3B4 pin is through connect-12V of R18 voltage.After capacitor C 2 is in parallel with C5, be connected between operational amplifier U3B8 pin and ground GND, after capacitor C 14 is in parallel with C17, be connected between operational amplifier U3B4 pin and ground GND.Described operational amplifier U3B model is OP2177.
In Fig. 6, described enlargement factor selects module U534 by operational amplifier U3A, operational amplifier U4A, capacitor C 19, C20, C24, C29, C30, C33, resistance R 21, R23, R24, R26, R28, R30, R31, R36, R38, R42, R43, four tunnel selector switch SW1 form.Capacitor C 24 is connected between operational amplifier U3A3 pin and ground GND.U3A3 pin connects U3A1 pin through resistance R 36 and capacitor C 29.Between resistance R 42 1 terminating resistor R36 and capacitor C 29, another termination U3B7 pin.Operational amplifier U3A2 pin connects U3A1 pin.After resistance R 23, R26, R28, the parallel connection of R31 one end, connect operational amplifier U3A2 pin, resistance R 23, R26, R28, the R31 other end be Jie Si road selector switch SW11,2,3,4 pin respectively, and output terminal 5,6,7,8 pin of four tunnel selector switch are connected to U4A2 pin.Resistance R 24 is connected between operational amplifier U4A2 pin and 1 pin.Operational amplifier U4A3 pin is through resistance R 38 ground connection GND.Operational amplifier U4A8 pin, through connect+12V of resistance R 21 voltage, is connected on after capacitor C 19 and C20 parallel connection between operational amplifier U4A8 pin and ground GND.Operational amplifier U4A4 pin, through connect-12V of resistance R 43 voltage, is connected on after capacitor C 30 and C33 parallel connection between operational amplifier U4A4 pin and ground GND.Operational amplifier U3A and U4A model are OP2177.
In Fig. 6, described 50Hz filtration module U535 is by operational amplifier U4B, operational amplifier U5A, capacitor C 21, C22, C23, C25, C31, C32, resistance R 22, R25, R29, R30, R32, R35, R37, R40, R44, adjustable resistance W3, W4, two tunnel selector switch SW2 form.Operational amplifier U4B6 foot meridian capacitor C25, resistance R 30 connect U4A1 pin.Resistance R 35 1 ends are connected between resistance R 30 and capacitor C 25, and the other end is through adjustable resistance W4 ground connection.Operational amplifier U4B5 pin ground connection GND.Resistance R 25 is connected between operational amplifier U4B6 pin and 7 pin, and capacitor C 21 1 ends are connected between resistance R 30 and capacitor C 25, another termination operational amplifier U4B7 pin.Operational amplifier U4B7 pin connects operational amplifier U5A2 pin through resistance R 32, adjustable resistance W3, and U5A2 pin connects U4A1 pin through resistance R 37.U5A3 pin is through resistance R 40 ground connection GND.Resistance R 29 is connected between operational amplifier U5A2 pin and 1 pin.Operational amplifier U5A8 pin, through connect+12V of resistance R 22 voltage, is connected between operational amplifier U5A8 pin and ground after capacitor C 22, C23 parallel connection.Operational amplifier U5A4 pin, through connect-12V of resistance R 44 voltage, is connected between operational amplifier U5A4 pin and ground after capacitor C 31, C32 parallel connection.Operational amplifier U5A1 Jiao Jie bis-tunnel selector switch SW21 pin, operational amplifier U4A1 Jiao Jie bis-tunnel selector switch SW22 pin.Two tunnel selector switch SW23 pin, 4 pin connect by capacitor C 26 as the active high-pass filtering circuit U536 input of second order.Described operational amplifier U4B and U5A model are OP2177.
In Fig. 6, the active high-pass filtering module of described second order U536 is by operational amplifier U5B, capacitor C 26, C27, C28, resistance R 27, R33, R41, and diode D5, D10 form.Operational amplifier U5B5 foot meridian capacitor C27, C26Jie bis-tunnel selector switch SW23 pin and 4 pin.Operational amplifier U5B5 pin is through resistance R 41 ground connection GND.Resistance R 27 1 termination operational amplifier U5B6 pin and 7 pin, the other end is connected between capacitor C 26, C27.Operational amplifier U5B6 pin connects 7 pin and forms feedback.Diode D5 anode connects D10 anode, and D5 negative electrode meets output AOUT, diode D10 plus earth GND.Capacitor C 28 connects between output AOUT and ground GND.Operational amplifier U5B7 pin is through resistance R 33 output-10V～+ 10V voltage signal AOUT.Described operational amplifier U5B model is OP2177.
The principle of work of the present embodiment is as follows:
After circuit is connected, 24V switch power module U1, for the present embodiment provides 24V DC voltage, through boost module U2, boosts to working sensor voltage 48V by input voltage 24V.Voltage regulates automatically and short circuit sensor detection module U3 can prevent the phenomenon that boost module damage causes sensor supply voltage rising infringement sensor, and can detect short circuit sensor problem.Voltage automatically regulates and short circuit sensor detection module U3 to take operational amplifier U10 be that comparer 2 pin are reference point.When power input voltage raises, electric current increases through triode T2, and triode T2 emitter voltage rises, make triode T1 base voltage increase, cause triode T1 emitter current to increase, thereby reduce triode T1 emitter voltage, realize voltage automatic regulation function.When sensor is short-circuited fault, triode T2 emitter voltage increases, and triode T3 base voltage is raise, and causes triode T3 conducting, and it is green that red and green color light emitting diode D20 is, and with this, represents the sensor fault that is short-circuited.When sensor U4 monitors, coal seam is micro-to shake during signal, sensor U4 is usingd resistance R 60 both end voltage by the micro-signal that shakes in coal seam and is entered in filter shape module U53 two optocoupler analog signal isolation circuit U 531 optocoupler O1 as source signal, microseismic signals is by optocoupler O13,4 pin coupling outputs, enter operational amplifier U1A2 pin, 1 pin output voltage, make triode Q1 conducting, through R16, produce voltage and make optocoupler O2 conducting, at optocoupler O23 pin, form feedback, realize the linear Amplification and insulation to microseismic signals.Triode Q2 and resistance R 13, R5, red and green color light emitting diode D3 form signal deteching circuit, can detect 0～500Hz input signal.During no signal, not conducting of triode Q2, red and green color light emitting diode D3 takes on a red color; While having signal input, triode Q2 conducting, red and green color light emitting diode D3 lights simultaneously, is micro-yellow.The microseismic signals of processing through voltage follower and signal deteching circuit is Shaping Module U53 output ± 10V voltage signal after filtering again.
Those of ordinary skill in the art will appreciate that; embodiment described here is in order to help reader understanding's principle of the present invention; the protection domain that should be understood to invention is not limited to such special statement and embodiment; everyly according to foregoing description, make various possible being equal to and replace or change, be all considered to belong to the protection domain of claim of the present invention.
Claims (6)
1. an impulsion pressure microseismic signals treatment circuit, is characterized in that: this signal processing circuit comprises: 24V switch power module U1, boost module U2, voltage regulate and short circuit sensor detection module U3, sensor U4 and sensor signal amplification filtering module U automatically; 24V switch power module U1 automatically regulates with voltage through boost module U2 and short circuit sensor detection module U3 is connected, short circuit sensor detection module U3 is connected with sensor U4, sensor U4 is connected with sensor signal amplification filtering module U5, and sensor signal amplification filtering module U5 adopts two optocouplers to realize input end and output terminal electrical isolation; Each module connected mode is that cascade connects;
Described sensor signal amplification filtering module U5 comprises: two optocoupler analog signal isolation module U51, voltage follower and signal frequency detection module U52 and filter shape module U53, each module connected mode is that cascade connects.
2. a kind of impulsion pressure microseismic signals treatment circuit according to claim 1, it is characterized in that: described filter shape module U53 comprises: the active high-pass filtering module of second order U531, single order amplification module U532, step low-pass active power filtering module U533, enlargement factor are selected module U534,50Hz filtration module U535 and second order high-pass filtering module U536, each module connected mode is that cascade connects.
3. a kind of impulsion pressure microseismic signals treatment circuit according to claim 1, is characterized in that: voltage automatically regulate and short circuit sensor detection module to not automatically being adjusted to 40～42v output voltage higher than 64v input voltage.
4. a kind of impulsion pressure microseismic signals treatment circuit according to claim 1, is characterized in that: voltage regulates and short circuit sensor detection module detecting sensor short-circuit conditions automatically.
5. a kind of impulsion pressure microseismic signals treatment circuit according to claim 2, is characterized in that: sensor signal amplification filtering module adopts two optocouplers to realize input end and output terminal electrical isolation.
6. a kind of impulsion pressure microseismic signals treatment circuit according to claim 2, is characterized in that: voltage follower and signal deteching circuit module detect and have or not sensor signal input.
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