CN205920130U - IEPE type intelligence acceleration sensor - Google Patents

Abstract

The utility model discloses a IEPE type intelligence acceleration sensor, including the piezo electric crystal module that is used for converting the acceleration into charge signal with be used for enlargeing charge signal after convert preamplifier module that voltage signal goes on exporting etc. Into. The utility model discloses can carry out on -the -spot check -up to the sensor to quality state to the sensor carries out equitable judgement. And simultaneously, the utility model discloses still have sensor electricity subdata table window function, through communication mode reading sensor's important information, realize that the scene of sensor is tracked and on -the -spot sensitivity calibration value setting, simultaneously can on -the -spot built -in information of rewriting the sensor.

Description

Iepe type intelligence acceleration transducer

Technical field

This utility model belong to acceleration transducer technical field and in particular to a kind of iepe type intelligence acceleration sensing Device.

Background technology

Acceleration transducer is widely used in the fields such as fault diagnosis, vibration-testing, by gathering acceleration signal, to setting The vibration level of standby malfunction or equipment is confirmed.Obviously, the state of acceleration transducer itself has directly to the signal of collection The impact connecing.For example, the sensitivity of sensor occurs drift, the frequency response of sensor to change, the circuit of sensor occurs to break Road, short circuit or insulation decline, the signal of collection obviously understands distortion, if can not finding in time and excluding sensor fault, to point The result of analysis will produce serious influence, and lead to the conclusion of mistake, thus causing to judge by accident to the state of equipment.But in some tests Scene, often uses the conventional acceleration sensor shown in Fig. 2, does not possess self checking and sensor electronic tables of data window Function, because the arrangement quantity of sensor and arrangement scope are larger, if all of sensor is all taken off delivered in metering Scheming amount, or scene verified using portable set, and its workload will be very big, it will expends substantial amounts of manpower thing Power, and because some transducer arrangements are in narrow space, field-checking is difficult to carry out.Additionally, each acceleration sensing The sensitivity calibration value of device is all different, when the quantity of live sensor is more, if adopting ordinary sensors, acquisition system The installation site of alignment sensor and the corresponding sensitivity calibration value of setting, can very waste time and energy and easily malfunction.

Utility model content

The purpose of this utility model is to overcome a kind of above-mentioned not enough offer iepe type intelligence acceleration transducer.

This utility model iepe type intelligence acceleration transducer, including the piezoelectricity for acceleration is converted to charge signal Crystal module 1 and for being converted to the pre-amplifier module 2 that voltage signal is exported after charge signal is amplified；Also Including micro controller module 3, communication level modular converter 4, the size for monitoring power supply constant current for completing level conversion Simultaneously in time mode switching signal sent with direction to the constant current monitoring modular 5 of micro controller module 3, be used for harvester 13 Power storage is got up, and provides the energy-storage module 6 of electric energy supply for constant voltage source module 7, for changing into the electric energy of energy-storage module 6 The constant voltage source module 7 of constant voltage source, the part continuous current providing harvester 13 are converted into supply current and to energy storage mould Charging module 8 that block 6 is charged, for there is AC signal and providing checking signal is carried out to pre-amplifier module 2 There is circuit module 9, the powered communication switching control for switching between powering mode and communication pattern in sophisticated signal Module 12 and the checking signal for producing sophisticated signal generation circuit module 9 are converted to charge signal and are coupled to preposition The standard capacitance module 10 of outputting standard checking signal after amplifier module 2；The signal output part of described piezoquartz module 1 with The signal input part of pre-amplifier module 2 is connected, the signal output part of described constant current monitoring modular 5 and micro controller module 3 Signal input part be connected, the input of described energy-storage module 6 passes through the signal output part phase of charging module 8 and harvester 13 Even, the outfan of described energy-storage module 6 is connected with the input of constant voltage source module 7, and described sophisticated signal occurs circuit module 9 Signal output part is connected with pre-amplifier module 2 signal input part by standard capacitance module 10, described micro controller module 3 Signal output part be connected with the signal input part of powered communication switching control module 12, described micro controller module 3 with communicate Level switch module 4 carries out both-way communication, the signal input part of described signal source switching control module 11 and micro controller module 3 Signal output part be connected, the outfan of described constant voltage source module 7 is sent out with micro controller module 3 input and sophisticated signal simultaneously Raw circuit module 9 input is connected, and the signal output part of described signal source switching control module 11 is in electric crystal module 1, precision Switch between the input grounding three of signal generating circuit module 9 and pre-amplifier module 2.

This utility model can carry out field-checking to sensor, thus reasonably being sentenced to the quality state of sensor Disconnected.Meanwhile, this utility model also has sensor electronic tables of data window function, reads the important of sensor by communication mode Information, the scene realizing sensor is followed the trail of and live sensitivity calibration value setting, simultaneously can the live interior confidence rewriting sensor Breath.

Brief description

Fig. 1 is this utility model iepe type intelligence acceleration sensor structure schematic diagram.

Fig. 2 is conventional acceleration sensor construction schematic diagram.

Specific embodiment

Below in conjunction with specific embodiment, this utility model is further described:

This utility model iepe type intelligence acceleration transducer, including the piezoelectricity for acceleration is converted to charge signal Crystal module 1 and for being converted to the pre-amplifier module 2 that voltage signal is exported after charge signal is amplified；Also Including micro controller module 3, communication level modular converter 4, the size for monitoring power supply constant current for completing level conversion Simultaneously in time mode switching signal sent with direction to the constant current monitoring modular 5 of micro controller module 3, be used for harvester 13 Power storage is got up, and provides the energy-storage module 6 of electric energy supply for constant voltage source module 7, for changing into the electric energy of energy-storage module 6 The constant voltage source module 7 of constant voltage source, the part continuous current providing harvester 13 are converted into supply current and to energy storage mould Charging module 8 that block 6 is charged, for there is AC signal and providing checking signal is carried out to pre-amplifier module 2 There is circuit module 9, the powered communication switching control for switching between powering mode and communication pattern in sophisticated signal Module 12 and the checking signal for producing sophisticated signal generation circuit module 9 are converted to charge signal and are coupled to preposition The standard capacitance module 10 of outputting standard checking signal after amplifier module 2, the signal output part of described piezoquartz module 1 with The signal input part of pre-amplifier module 2 is connected, the signal output part of described constant current monitoring modular 5 and micro controller module 3 Signal input part be connected, the input of described energy-storage module 6 passes through the signal output part phase of charging module 8 and harvester 13 Even, the outfan of described energy-storage module 6 is connected with the signal input part of constant voltage source module 7, and described sophisticated signal occurs circuit mould The signal output part of block 9 is connected with pre-amplifier module 2 signal input part by standard capacitance module 10, described microcontroller The signal output part of module 3 is connected with the signal input part of powered communication switching control module 12, described micro controller module 3 with Communication level modular converter 4 carries out both-way communication, the signal input part of described signal source switching control module 11 and microcontroller The signal output part of module 3 is connected, the outfan of described constant voltage source module 7 simultaneously with micro controller module 3 signal input part and Sophisticated signal occurs circuit module 9 input to be connected, and the signal output part of described signal source switching control module 11 is in piezo crystals Module 1, sophisticated signal occur to switch between circuit module 9 and the input grounding three of pre-amplifier module 2.This reality It is with new above-mentioned modules to be commercially available and bring the hardware module that direct wiring uses.

Described micro controller module 3 is internally integrated eeprom, and described micro controller module 3 executes corresponding function and includes: Instructing the upload for information about of sensor according to harvester 13；Instruction according to harvester 13 stores rewriting information； According to the instruction of harvester 13, signal source is switched over, switch to sophisticated signal during checking mode and circuit module 9 occurs, just Often switch to piezoquartz module 1 during mode of operation, charge mode is by the input grounding of pre-amplifier module 2；According to adopting Acquisition means 13 instruct, and control sophisticated signal to occur circuit module 9 to send frequency and the certain signal of amplitude, preposition amplification is carried out Verification；The Charge Management of responsible power circuit；Control 12 is instructed according to harvester 13, between communication pattern and powering mode Directly switch over.

The method of work of described iepe type intelligence acceleration transducer comprises the following steps:

Step 1: when using for the first time, after harvester 13 normal power supply, sensor first passes through charging module 8 to energy storage mould Block 6 is charged, and is normal operation of sensor savings electric energy；

Step 2: after the harvester 13 default time, if sensing system is normal, when sensor energy-storage module 6 Supply voltage exceed setting the voltage threshold upper limit when, now constant voltage source module 7 is started working, and system automatically wakens up；

Step 3: after automatically wakening up, the position of the switch of signal source switching control module 11 is set to checking mode by system, defeated Go out checking signal, now constant-current source one side is powered to pre-amplifier module 2, on the other hand can continue as energy-storage module 6 and fill Electricity；Now harvester 13 can verify to sensor, also indicate that sensor normal work simultaneously；If harvester 13 do not receive checking signal, show that sensing system is abnormal, and this sensor mark is fault sensor；

Step 4: now harvester 13 can cut off constant-current source and enter communication pattern, the constant current monitoring modular 5 in sensor The size of electric current and direction in circuit can be monitored, automatic decision is powering mode or communication pattern, if communication pattern, Micro controller module 3 is notified to proceed to communication pattern immediately, now both sides can carry out handshake communication by the agreement of prior agreement, collection Device 13 can send order, the information of read-write sensor, notice sensor switching working mode to sensor；

Step 5: if in a communication mode, sensor electric energy will consume, and micro controller module 3 can monitor that voltage is low In bottom threshold, now charge request can be sent to harvester 13, harvester 13 is immediately converted as powering mode, sensor Constant current monitoring modular 5 can monitor constant current signal, also switch to charge mode immediately, and pre-amplifier module 2 is defeated Enter signal ground, pre-amplifier module 2 module is exported zero setting and automatically proceeds to step 2, continue to complete remaining after charging complete Under work；If electric energy is sufficient in a communication mode, proceed to communicate；

Step 6: after harvester 13 has been collected information and correctly arranged, control sensor to start normal work.

Element of the present utility model all using micro-power device, reduces the power consumption of whole sensor, to extend intelligent sensing The working time in communications status for the device.Utility model intelligence sensor still adopts two-wire system, does not increase line cost and cloth The difficulty of line, communication and the transmission of analogue signal are realized by the way of time-sharing multiplex.

This utility model intelligence sensor, with micro controller module 3 as core, completes the scheduling of whole Sensor Task, its The module that it coordinates realizes respective function under the scheduling of microcontroller.

This utility model intelligence sensor mainly has self checking function and sensor electronic tables of data window function.Research Show, the fault of acceleration transducer mainly appears on preamplifier, accounts for more than the 90% of sensor fault.Therefore, originally The preamplifier of the main check sensor of utility model.When needing to carry out field-checking to sensor, harvester 13 leads to Cross communication mode and sensor is sent with instruction, after micro controller module 3 receives instruction, the instruction according to harvester 13 is to signal Occur circuit to be controlled, send required frequency and range signal, therefore can carry out field-checking to sensor, thus The quality state of sensor is reasonably judged.Meanwhile, this utility model intelligence sensor also has sensor electronic number According to table window function, read the important information of sensor by communication mode, the scene realizing sensor is followed the trail of and live sensitive Degree calibration value setting, simultaneously can the live built-in information rewriting sensor.

Claims (1)

1. a kind of iepe type intelligence acceleration transducer, including the piezoquartz module for acceleration is converted to charge signal (1) and for after being amplified to charge signal be converted to the pre-amplifier module (2) that voltage signal is exported；Its feature It is also to include signal source switching control module (11), micro controller module (3), turn for completing the communication level of level conversion Die change block (4), the size and Orientation for monitoring power supply constant current simultaneously send mode switching signal to micro controller module in time (3) constant current monitoring modular (5), for harvester (13) power storage is got up, be that constant voltage source module (7) provides electric energy to supply The energy-storage module (6) given, for the electric energy of energy-storage module (6) is changed into constant voltage source constant voltage source module (7), will collection dress The part continuous current that putting (13) provides be converted into supply current and energy-storage module (6) is charged charging module (8), use In the sophisticated signal occurring AC signal providing that pre-amplifier module (2) is carried out with checking signal occur circuit module (9), For powered communication switching control module (12) that switches between powering mode and communication pattern and for by precision The checking signal that signal generating circuit module (9) produces is converted to charge signal and to be coupled to pre-amplifier module (2) defeated afterwards Go out the standard capacitance module (10) of criteria check signal, the signal output part of described piezoquartz module (1) and preamplifier The signal input part of module (2) is connected, the signal output part of described constant current monitoring modular (5) and the letter of micro controller module (3) Number input is connected, and the input of described energy-storage module (6) passes through the outfan phase of charging module (8) and harvester (13) Even, the outfan of described energy-storage module (6) is connected with the input of constant voltage source module (7), and described sophisticated signal occurs circuit mould The signal output part of block (9) is connected with pre-amplifier module (2) signal input part by standard capacitance module (10), described micro- The signal output part of controller module (3) is connected with the signal input part of powered communication switching control module (12), described micro-control Device module (3) processed and communication level modular converter (4) carry out both-way communication, the signal of described signal source switching control module (11) Input is connected with the signal output part of micro controller module (3), the outfan of described constant voltage source module (7) simultaneously with microcontroller The input that device module (3) input occurs circuit module (9) with sophisticated signal is connected, described signal source switching control module (11) signal output part is in electric crystal module (1), sophisticated signal generation circuit module (9) and pre-amplifier module (2) Switch between input grounding three.