CN110375975A - A kind of disconnected spring detection circuit of track damping spring - Google Patents
A kind of disconnected spring detection circuit of track damping spring Download PDFInfo
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- CN110375975A CN110375975A CN201910677036.6A CN201910677036A CN110375975A CN 110375975 A CN110375975 A CN 110375975A CN 201910677036 A CN201910677036 A CN 201910677036A CN 110375975 A CN110375975 A CN 110375975A
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- 238000013016 damping Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 title claims description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 54
- 230000005355 Hall effect Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000007717 exclusion Effects 0.000 abstract 1
- 230000008447 perception Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses a kind of acquisition of data and transmission circuits, and being used to detect track damping spring whether there is disconnected spring, which includes aware circuit, data processing circuit and transmission circuit.Formation using aware circuit perception spring changes, to obtain the real time data in relation to spring, is distinguished based on the data of normal spring and disconnected spring and judge disconnected spring, the presence that is convenient, identifying disconnected spring in real time of circuit energy, convenient for promptly carrying out track risk exclusion, track operational safety has been ensured.
Description
Technical field
The present invention relates to sensing technologies, more particularly, to a kind of technology of the whether disconnected spring of monitoring track damping spring.
Background technique
Judgement work for track shock-absorption device operating status, it is domestic using installation spring indicator or spring at present
The mode of indicating bar differentiates whether damping spring is broken by artificial site inspection.The advantages of this mode be installation it is simple, at
This is cheap.But it is limited by the limitation of Along Railway environment and maintenance test period, it will lead to damping spring state feedback letter
The delay of breath cannot timely obtain the real-time status of track damping spring；Checking additionally by artificial scene causes to safeguard people
Heavy workload, the poor reliability, inefficiency of member.
However in the prior art, spring indicator or spring indicating bar being installed on track damping spring, and pass through
Artificial scene judge the mode whether spring is broken, and due to manually checking, there are time delay or erroneous judgements, it may appear that spring breakage is but not
The case where capable of understanding in time, brings serious security risk to the operation of train.Such as: in the gap of artificial site inspection twice
There is spring breakage in phase, then the state-maintenance personnel during this and does not know about, necessarily bring security risk, furthermore artificial inspection
It looks into and also needs to consume a large amount of manpower, financial resources spending.
In the disconnected spring detection field of track damping spring, does not occur also detecting disconnected spring automatically in the prior art and upload spring inspection of breaking
The technology of result is surveyed, all only continues to use the artificial detection technology of spring indicating bar substantially.Based on this, it is a kind of can in time, efficiently
Ground, accurately, reliably, economically the technical solution of solution resolution spring test problems is to those skilled in the art one
The problem that part urgently needs.
Summary of the invention
The purpose of the present invention is passing through the state of sensor real-time remote monitoring damping spring, and judge automatically damping spring
Whether it is broken.The invention can accurately perceive the change in location of spring indicator, be judged by the change in location of spring indicator
Whether damping spring is in disconnected spring state.The state that each damping spring can be grasped in real time using invention maintenance unit, from
And maintenance work is arranged according to spring state, the reliability and accuracy of maintenance are not only improved in this way, and are effectively reduced
Maintenance cost mitigates maintenance personnel's workload.
The present invention provides a kind of disconnected spring detection circuit of track damping spring comprising spring travel aware circuit, environment temperature
Spend aware circuit, processing circuit, transmission circuit.
Spring travel aware circuit includes: switching mode or linear hall-effect device Q2 comprising three pins, 1 foot are connected to
Power vd D, 2 feet are connected to GND, and 3 feet are connected to the output, wherein 1 foot connects the drain electrode of PMOS tube Q1 and is additionally coupled to capacitor
The other end of one end of C20, capacitor C20 is grounded and its capacitor is 10uF, and the source electrode of PMOS tube Q1 meets VDD, PMOS tube Q1's
Grid connects PW-C1, which is connected to 13 feet of U1 chip.2 feet are additionally coupled to the one of the capacitor C11 that capacitance is 1nF
End, the other end of capacitor C11 are connected to 3 feet of Q2, and 3 feet of Q2 are additionally coupled to the one end for the resistance R4 that resistance value is 20K, resistance R4
The other end be connected to 1 foot；3 feet of Q2 are connected to the one end for the resistance R10 that resistance value is 2K, and the other end of resistance R10 is connected to
Resistance value is one end of the resistance R12 of 2K and is additionally coupled to output end DATA, and output end DATA is connected to 2 feet of U1 chip, electricity
Hinder the other end ground connection of R12.
The environment temperature aware circuit includes: that chip U3 includes pin 1 to pin 6, and wherein pin 1 and pin 6 are temperature
The data-interface of sensor is spent, pin 1 is connected to power vd D by the resistance R14 that resistance value is 5.1K, and pin 1 also directly connects
14 feet of chip U1 are connected to, pin 6 is connected to power vd D by the resistance R13 that resistance value is 5.1K, and pin 6 is also linked directly to
15 feet of chip U1；Pin 2 connects GND；Pin 3 is hanging；Pin 4 is connected to one end of GND and capacitor C6, and capacitor C6's is another
One end is connected to pin 5, and pin 5 is also connected to power vd D by the resistance R15 that resistance value is 4.7K.
The processing circuit includes: chip U1, and pin 1 is connected to power vd D, and is connected to the capacitor that capacitance is 1uF
One section, capacitor other end ground connection；Pin 2 is connected to the end DATA；Pin 456789 for radio frequency chip control pin, connect
Mouth is SPI, and pin 10 is connected to the anode of LED1, the minus earth of LED1 by the R3 that resistance value is 1K；Pin 14 15 be temperature
The data-interface of sensor, is respectively connected to the pin 1 and pin 6 of environment temperature aware circuit, pin 16 17 be chip programming
Pin, pin 19 are grounded by the resistance R1 that resistance value is 22K, and pin 20 is grounded, and pin 3,11,18 is hanging.
The transmission circuit includes: chip U2, pin 123456 be chip controls interface, respectively with chip U1
Pin 987654 it is corresponding be connected, interface type SPI, pin 7 is connected to power vd D, and is connected to power supply BT1's
Anode, and it is additionally coupled to one section of shunt capacitance C12 and C13, the other end ground connection of shunt capacitance C12 and C13, pin 8 are grounded,
Pin 9 is connected to the NC foot (i.e. pin 1) of oscillator X1, and is grounded by the capacitor C15 that capacitance is 15pF, and oscillator X1's draws
Foot 2 is grounded, and the CLK0 foot (i.e. pin 3) of oscillator X1 is grounded by the capacitor C10 that capacitance is 15pF, and the pin is additionally coupled to
The pin 4 of the pin 10 of chip U2, oscillator X1 is grounded；The electricity for being 1M by resistance value between the pin 9 and pin 10 of chip U2
R5 is hindered to be connected with each other；The pin 11 of chip U2 is connected to one end of shunt capacitance C8 and C9, the other end of shunt capacitance C8 and C9
The pin 12 of ground connection, chip U2 is connected to by the inductance L3 that inductance value is 10nH and connects one end of capacitor C8 and C9；Chip U2
Pin 13 be 3.9nH by inductance value inductance L1 be connected to one end of the capacitor C5 that capacitance is 1.5pF, capacitor C5's is another
One end connects the one end for the capacitor C7 that capacitance is 1pF and is connected to transmitting antenna, the other end ground connection of capacitor C7；Chip U2's
The inductance L2 connection for being 6.8nF with inductance value between pin 12 and pin 13；The pin 14 of chip U2 is grounded, the pin of chip U2
15 meet power vd D；The pin 16 of chip U2 is grounded by the resistance R2 that resistance value is 22K；The pin 17 of chip U2 is grounded；Chip U2
Pin 18 connects power vd D；It being connected between the pin 19 and 20 of chip U2 by capacitor C4, the pin 20 of chip U2 is also grounded,
Wherein, capacitor C5 connects radio-frequency transmissions antenna with C7, is the matching element of antenna, guarantees that the gain of antenna is in optimum state.
The power vd D also passes through shunt capacitance C1 and C3 ground connection, to enhance the job stability of chip.
The beneficial effect comprise that there is timeliness, high efficiency, it, at any time can be with due to the application of sensor technology
It detects whether spring is broken, therefore compared to manual inspection, there is significant timely sexual clorminance, can check at any time newest
Testing result, thus efficiently it is convenient.
Accuracy: since the present invention can accurately perceive the change in location of spring indicator, compared to the master of manual inspection
The property seen judgement, has more accurate judgement.
Reliability: since there is no the inspection gap of artificial detection, therefore whether normal operating conditions is in for spring
Testing result, testing result have very high reliability.
Economy: it is consumed since there is no a large amount of manpower consumptions and financial resources, therefore advantage is significant in cost control.
The above technical effect is the certain advantages that technical solution in the prior art does not have, therefore the present invention takes
Corresponding technological progress was obtained, there is beneficial technical effect.
Detailed description of the invention
Fig. 1 is the aware circuit structure chart of present pre-ferred embodiments.
Fig. 2 is the technology frame chart of present pre-ferred embodiments.
Fig. 3 is the spring travel aware circuit of present pre-ferred embodiments.
Fig. 4 is the environment temperature aware circuit of present pre-ferred embodiments.
Fig. 5 is the processing circuit of present pre-ferred embodiments.
Fig. 6 is the transmission circuit of present pre-ferred embodiments.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.In embodiments of the present invention, first, second etc., it only uses unless otherwise stated
In the different description object of differentiation.
A kind of disconnected spring detection circuit of track damping spring, being used to detect track damping spring whether there is disconnected spring, reference
Fig. 1, the device include aware circuit, data processing circuit and transmission circuit.
In certain class embodiment, aware circuit includes spring travel aware circuit.With reference to Fig. 2,6 top of damping spring includes
One spring protection bracket 5, the spring protection bracket 5 are fixed bracket 1 and fix, and a spring is provided on spring protection bracket 5
Damping indicating bar 4 includes that a permanent magnet 2 is provided with a Hall near permanent magnet on the top of spring shock absorption indicating bar 4
Device 3, for incuding the magnetic field strength of permanent magnet 2.
In certain class embodiment, hall device 3 can be Hall switch device, be also possible to linear hall-effect device.
In certain class embodiment, permanent magnet can be fixed on any suitable position of spring shock absorption indicating bar, rather than only
It can only be in apical position.
With reference to Fig. 3, a physical circuit figure of specific implementation spring travel aware circuit is provided.Q2 is switching mode or line
Property hall device, 1 foot are connected to power supply, and 2 feet are connected to GND, and 3 feet are connected to the output.For 3 heel of Hall switch device
High level or low level are exported according to magnetic field strength, corresponding analog voltage is exported according to magnetic field strength for linear hall-effect device
Value.PW-C1 is that Hall element power supply controls foot and is connected with 13 foot of U1 chip (subsequent detailed description), and when sensor dormancy turns off electricity
Source achievees the purpose that power saving, improves the battery life of sensor.
Specifically, above-mentioned spring travel aware circuit includes: switching mode or linear hall-effect device Q2 comprising three are drawn
Foot, 1 foot are connected to power supply, and 2 feet are connected to GND, and 3 feet are connected to the output, wherein 1 foot connects the drain electrode of PMOS tube Q1 and also connects
It is connected to one end of capacitor C20, the other end of capacitor C20 is grounded and its capacitor is 10uF, and the source electrode of PMOS tube Q1 meets VDD,
The grid of PMOS tube Q1 connects PW-C1, which is connected to 13 feet of U1 chip.2 feet are additionally coupled to the electricity that capacitance is 1nF
Hold one end of C11, the other end of capacitor C11 is connected to 3 feet of Q2, and 3 feet of Q2 are additionally coupled to the one of the resistance R4 that resistance value is 20K
End, the other end of resistance R4 are connected to 1 foot；3 feet of Q2 are connected to the one end for the resistance R10 that resistance value is 2K, and resistance R10's is another
End is connected to the one end for the resistance R12 that resistance value is 2K and is additionally coupled to output end DATA, and output end DATA is connected to U1 chip
2 feet, resistance R12 the other end ground connection.
In certain class embodiment, aware circuit includes environment temperature aware circuit.Discovery hall device is by work in practice
Make the influence of environment temperature and deviation occur, measurement data will appear large error, therefore in order to reduce the error, the environment
Temperature sensing circuit is configurable for detection environment temperature.In subsequent processing, can according to environment temperature difference come pair
Measurement data is compensated and is corrected, and guarantees the consistency of the measurement data under different temperature environments.
With reference to Fig. 4, a physical circuit figure of specific implementation environment temperature aware circuit is provided.Chip U3 is temperature sensing
Device interface, pin 5 are supply pin, and pin 4 is address foot, and pin 2 is grounding leg, and pin 3 is warning output foot, and this application is not required to
Warning function is wanted, therefore the friendship is hanging.Pin 16 be temperature sensor data-interface, the pin of interface type I2C and U1
14 15 be correspondingly connected with.
Specifically, it includes pin 1 to pin 6 that above-mentioned environment temperature aware circuit, which includes: chip U3, wherein pin 1 and is drawn
Foot 6 is the data-interface of temperature sensor, and pin 1 is connected to power vd D by the resistance R14 that resistance value is 5.1K, and pin 1 is also
14 feet of chip U1 are connected directly to, pin 6 is connected to power vd D by the resistance R13 that resistance value is 5.1K, and pin 6 is also direct
It is connected to 15 feet of chip U1；Pin 2 connects GND；Pin 3 is hanging；Pin 4 is connected to one end of GND and capacitor C6, capacitor
The other end of C6 is connected to pin 5, and pin 5 is also connected to power vd D by the resistance R15 that resistance value is 4.7K.
In certain class embodiment, data processing circuit uses low-power consumption MCU, which is responsible for handling the number of aware circuit
According to and data being handled and are judged, then data be packaged according to the agreement of agreement is sent to transmission electricity by treated
Road is sent.
With reference to Fig. 5, a physical circuit figure of specific processing circuit is provided.Chip U1 is central processing element, pin 1
For supply pin, pin 20 is GND, pin 456789 control pin, interface SPI for radio frequency chip, pin 10 is instruction
Lamp output pin, for installing state instruction when sensor；Pin 14 15 be temperature sensor data-interface, interface type
I2C；13 foot of pin is that the power supply of hall device controls foot；16 17 of pin is chip programming pin, remaining pin that do not use is outstanding
Sky is directly or indirectly.
Specifically, above-mentioned processing circuit includes: chip U1, and pin 1 is connected to power vd D, and being connected to capacitance is 1uF
One section of capacitor, the capacitor other end ground connection；Pin 2 is connected to the end DATA；Pin 456789 for radio frequency chip control draw
Foot, interface SPI, pin 10 are connected to the anode of LED1, the minus earth of LED1 by the R3 that resistance value is 1K；Pin 14 15
For the data-interface of temperature sensor, be respectively connected to the pin 1 and pin 6 of environment temperature aware circuit, pin 16 17 be core
Piece programming pin, pin 19 are grounded by the resistance R1 that resistance value is 22K, and pin 20 is grounded, and pin 3,11,18 is hanging.
In certain class embodiment, transmission circuit is by the status data of spring and scene temperature data transmission to live number
According to acquisition base station, using wireless transmission, transmission mode includes but is not limited to 2.4G wireless technology, bluetooth, zigbee for data transmission
Etc. modes.
With reference to Fig. 6, a physical circuit figure of specific transmission circuit is provided.Chip U2 is rf chip, is responsible for
By sensor acquire data be modulated and send, pin 123456 be chip controls interface and chip U1 pin
987654 it is corresponding be connected, interface type SPI.C5 connects radio-frequency transmissions antenna with C7, is the matching element of antenna, protects
The gain of card antenna is in optimum state.
Specifically, above-mentioned transmission circuit includes: chip U2, pin 123456 be chip controls interface, respectively with
The pin 9 of chip U1 87654 it is corresponding be connected, interface type SPI, pin 7 is connected to power vd D, and is connected to power supply
The anode of BT1, and it is additionally coupled to one section of shunt capacitance C12 and C13, the other end ground connection of shunt capacitance C12 and C13, pin 8
Ground connection, pin 9 is connected to the NC foot (i.e. pin 1) of oscillator X1, and is grounded by the capacitor C15 that capacitance is 15pF, oscillator
The pin 2 of X1 is grounded, and the CLK0 foot (i.e. pin 3) of oscillator X1 is grounded by the capacitor C10 that capacitance is 15pF, and the pin is also
It is connected to the pin 10 of chip U2, the pin 4 of oscillator X1 is grounded；It is by resistance value between the pin 9 and pin 10 of chip U2
The resistance R5 of 1M is connected with each other；The pin 11 of chip U2 is connected to one end of shunt capacitance C8 and C9, shunt capacitance C8's and C9
The pin 12 of other end ground connection, chip U2 is connected to by the inductance L3 that inductance value is 10nH and connects one end of capacitor C8 and C9；
The inductance L1 that the pin 13 of chip U2 is 3.9nH by inductance value is connected to the one end for the capacitor C5 that capacitance is 1.5pF, capacitor
The other end of C5 connects the one end for the capacitor C7 that capacitance is 1pF and is connected to transmitting antenna, the other end ground connection of capacitor C7；Core
The inductance L2 connection for being 6.8nF with inductance value between the pin 12 and pin 13 of piece U2；The pin 14 of chip U2 is grounded, chip U2
Pin 15 meet power vd D；The pin 16 of chip U2 is grounded by the resistance R2 that resistance value is 22K；The pin 17 of chip U2 is grounded；
Chip U2 pin 18 connects power vd D；It is connected between the pin 19 and 20 of chip U2 by capacitor C4, the pin 20 of chip U2 is also
Ground connection, wherein C5 connects radio-frequency transmissions antenna with C7, is the matching element of antenna, guarantees that the gain of antenna is in optimum state.
In certain class embodiment, with continued reference to Fig. 6, power vd D is designed by capacitor C1 and C3 ground connection in parallel, this kind,
The reliable and stable operation that can guarantee chip, improves system robustness.
Description based on the above-mentioned technical proposal, after there is disconnected spring in track damping spring, the spring that is connect with damping spring
Positional relationship/vibration stroke between damping indicating bar and permanent magnet and hall device on the indicating bar occur it is abnormal, suddenly
Your changes of magnetic field of units test to permanent magnet is abnormal, and then thus abnormal data filters out the disconnected spring seat with disconnected spring feature
Mark/number finds rapidly to realize and positions disconnected spring problem.
It should be noted that the above circuit is not only implemented by software or hardware, it can also include software, combination of hardware
It realizes, and it is only to divide only in accordance with the division of hardware that the partitioning standards of circuit, which are not, the application is to specific embodiment
It is not specifically limited.
The above embodiments are only used to illustrate the present invention, and not limitation of the present invention, in relation to the common of technical field
Technical staff can also make a variety of changes and modification without departing from the spirit and scope of the present invention, therefore all
Equivalent technical solution also belongs to scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (6)
- The spring detection circuit 1. a kind of track damping spring breaks comprising spring travel aware circuit, environment temperature aware circuit, place Manage circuit, transmission circuit.
- 2. detection circuit according to claim 1, it is characterised in that: the spring travel aware circuit includes: switching mode Or linear hall-effect device Q2 comprising three pins, 1 foot are connected to power vd D, and 2 feet are connected to GND, and 3 feet are connected to output End, wherein the one end of 1 foot connection PMOS tube Q1 to drain and be additionally coupled to capacitor C20, the other end of capacitor C20 is grounded and it Capacitor is 10uF, and the source electrode of PMOS tube Q1 meets VDD, and the grid of PMOS tube Q1 connects PW-C1, which is connected to U1 chip 13 feet；2 feet are additionally coupled to the one end for the capacitor C11 that capacitance is 1nF, and the other end of capacitor C11 is connected to 3 feet of Q2, and the 3 of Q2 Foot is additionally coupled to the one end for the resistance R4 that resistance value is 20K, and the other end of resistance R4 is connected to 1 foot；3 feet of Q2 are connected to resistance value and are One end of the resistance R10 of 2K, the other end of resistance R10 are connected to the one end for the resistance R12 that resistance value is 2K and are additionally coupled to export DATA, output end DATA is held to be connected to 2 feet of U1 chip, the other end ground connection of resistance R12.
- 3. detection circuit according to claim 1 to 2, it is characterised in that: the environment temperature aware circuit includes: chip U3 includes pin 1 to pin 6, and wherein pin 1 and pin 6 are the data-interface of temperature sensor, and pin 1 is 5.1K by resistance value Resistance R14 be connected to power vd D, and pin 1 is also linked directly to 14 feet of chip U1, and pin 6 is 5.1K's by resistance value Resistance R13 is connected to power vd D, and pin 6 is also linked directly to 15 feet of chip U1；Pin 2 connects GND；Pin 3 is hanging；Draw Foot 4 is connected to one end of GND and capacitor C6, and the other end of capacitor C6 is connected to pin 5, and pin 5 is also 4.7K by resistance value Resistance R15 be connected to power vd D.
- 4. detection circuit according to claim 1 to 3, it is characterised in that: the processing circuit includes: chip U1, pin 1 is connected to power vd D, and is connected to one section of capacitor of capacitance for 1uF, capacitor other end ground connection；Pin 2 is connected to DATA End；Pin 456789 control pin, interface SPI for radio frequency chip, pin 10 is connected to by resistance value for the R3 of 1K The anode of LED1, the minus earth of LED1；Pin 14 15 be temperature sensor data-interface, be respectively connected to environment temperature The pin 1 and pin 6 of aware circuit, pin 16 17 be chip programming pin, pin 19 by resistance value be 22K resistance R1 Ground connection, pin 20 are grounded, and pin 3,11,18 is hanging.
- 5. detection circuit described in -4 according to claim 1, it is characterised in that: the transmission circuit includes: chip U2, pin 123456 be chip controls interface, respectively with the pin 9 of chip U1 8765 it is 4 corresponding connected, interface type is SPI, pin 7 are connected to power vd D, and are connected to the anode of power supply BT1, and are additionally coupled to the one of shunt capacitance C12 and C13 Section, the other end ground connection of shunt capacitance C12 and C13, pin 8 are grounded, and pin 9 is connected to the NC foot (i.e. pin 1) of oscillator X1, And be grounded by the capacitor C15 that capacitance is 15pF, the pin 2 of oscillator X1 is grounded, and the CLK0 foot (i.e. pin 3) of oscillator X1 is logical It crosses the capacitor C10 that capacitance is 15pF to be grounded, and the pin is additionally coupled to the pin 10 of chip U2, the pin 4 of oscillator X1 is grounded； It is connected with each other between the pin 9 and pin 10 of chip U2 by the resistance R5 that resistance value is 1M；The pin 11 of chip U2 is connected to simultaneously Join one end of capacitor C8 and C9, the other end ground connection of shunt capacitance C8 and C9, the pin 12 of chip U2 is 10nH by inductance value Inductance L3 be connected to and connect one end of capacitor C8 and C9；The pin 13 of chip U2 is connected by the inductance L1 that inductance value is 3.9nH Be connected to capacitance be 1.5pF capacitor C5 one end, capacitor C5 the other end connection capacitance be 1pF capacitor C7 one end and It is connected to transmitting antenna, the other end ground connection of capacitor C7；It with inductance value is 6.8nF's between the pin 12 and pin 13 of chip U2 Inductance L2 connection；The pin 14 of chip U2 is grounded, and the pin 15 of chip U2 meets power vd D；The pin 16 of chip U2 passes through resistance value It is grounded for the resistance R2 of 22K；The pin 17 of chip U2 is grounded；Chip U2 pin 18 connects power vd D；19 He of pin of chip U2 It is connected between 20 by capacitor C4, the pin 20 of chip U2 is also grounded, wherein capacitor C5 connects radio-frequency transmissions antenna with C7, is The matching element of antenna guarantees that the gain of antenna is in optimum state.
- 6. detection circuit described in -5 according to claim 1, it is characterised in that: the power vd D also pass through shunt capacitance C1 and C3 ground connection, to enhance the job stability of chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910677036.6A CN110375975A (en) | 2019-07-25 | 2019-07-25 | A kind of disconnected spring detection circuit of track damping spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910677036.6A CN110375975A (en) | 2019-07-25 | 2019-07-25 | A kind of disconnected spring detection circuit of track damping spring |
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| CN110375975A true CN110375975A (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910677036.6A Pending CN110375975A (en) | 2019-07-25 | 2019-07-25 | A kind of disconnected spring detection circuit of track damping spring |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074034A (en) * | 1992-10-22 | 1993-07-07 | 浙江大学 | High-voltage isolation-type Hall effect displacement sensor |
| CN1900650A (en) * | 2006-07-06 | 2007-01-24 | 尹学军 | Device for monitoring spring support member height change and use |
| CN102866595A (en) * | 2012-09-26 | 2013-01-09 | 哈尔滨工业大学 | Two-dimensional micro-displacement measuring method for double workpiece tables of photoetching machine and sensing device |
| CN204346356U (en) * | 2014-12-22 | 2015-05-20 | 新乡北方车辆仪表有限公司 | Contactless brake block displacement detector |
-
2019
- 2019-07-25 CN CN201910677036.6A patent/CN110375975A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074034A (en) * | 1992-10-22 | 1993-07-07 | 浙江大学 | High-voltage isolation-type Hall effect displacement sensor |
| CN1900650A (en) * | 2006-07-06 | 2007-01-24 | 尹学军 | Device for monitoring spring support member height change and use |
| CN102866595A (en) * | 2012-09-26 | 2013-01-09 | 哈尔滨工业大学 | Two-dimensional micro-displacement measuring method for double workpiece tables of photoetching machine and sensing device |
| CN204346356U (en) * | 2014-12-22 | 2015-05-20 | 新乡北方车辆仪表有限公司 | Contactless brake block displacement detector |
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Application publication date: 20191025 |
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| RJ01 | Rejection of invention patent application after publication |