CN208155488U - A kind of load cell control device - Google Patents
A kind of load cell control device Download PDFInfo
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- CN208155488U CN208155488U CN201721797463.0U CN201721797463U CN208155488U CN 208155488 U CN208155488 U CN 208155488U CN 201721797463 U CN201721797463 U CN 201721797463U CN 208155488 U CN208155488 U CN 208155488U
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- load cell
- control device
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- power
- box body
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Abstract
The utility model discloses a kind of load cell control device, power circuit components connect load cell and signal conditioner；Wherein load cell includes elastomer, and the Wheatstone bridge for being internally provided with strain gauge resistance composition of elastomer, elastomer top is provided with the diaphragm of output voltage signal, the above-mentioned voltage signal of signal conditioner reception；Signal conditioner includes the box body of sealing, and array filtering cover and power-supply filter, array filtering cover connection power-supply filter, array filtering cover connection printed board assembly, printed board assembly output control signal are provided in box body.The device has the characteristics that small in size, anti-electromagnetic interference capability is strong, measurement accuracy is high, can automatically control, temperature stability is good and high reliablity.
Description
Technical field
The utility model belongs to dynamometry technical field；More particularly to a kind of load cell control device.
Background technique
Ship-based missile is Warship Air Defense, anti-ship and antisubmarine primary armament, and early stage is all inclination transmitting.Major defect is such as
Under：1, emitter is required to turn to target, and the reaction time is long；2, it is big to occupy volume；3, emitter is exposed on deck, easily
It is destroyed.
It marine stormy waves and jolts traditional vertical launch system pointing time can be made to lengthen, tactics adaptability and transmitting are imitated
Rate is not able to satisfy the requirement of modern military.For this case, control motor action may be implemented by dynamometry control device,
Coupling mechanism force is applied to guided missile and whether in place real-time detection coupling mechanism force changing rule judges pressure, the research and development of the product are also filled up
Apply the technological gap of the stress condition measurement and control of coupling mechanism force to guided missile.
Utility model content
The utility model provides a kind of load cell control device；The device has small in size, electromagnetism interference energy
Power is strong, measurement accuracy is high, can automatically control, the characteristics of temperature stability is good and high reliablity.
The technical solution of the utility model is：A kind of load cell control device, power circuit components connect dynamometry and pass
Sensor and signal conditioner；Wherein load cell includes elastomer, and the surface of elastomer is provided with strain gauge resistance composition
Wheatstone bridge, elastomer top are provided with the diaphragm of output voltage signal, and signal conditioner receives above-mentioned voltage signal；Signal
Conditioner includes the box body of sealing, and array filtering cover and power-supply filter, array filtering cover connection electricity are provided in box body
Source filter, array filtering cover connection printed board assembly, printed board assembly output control signal；Wherein printed board assembly is integrated
There are amplifying circuit, hysteresis comparator circuit and driving circuit, driving circuit output control signal；Power-supply filter is signal conditioner
It powers with load cell；Array filtering cover connection diaphragm, and receive the voltage signal of its transmission.
Further, the utility model is also characterized by：
Its elastomer and diaphragm are arranged in the shell of sealing, and the side of shell is provided with locking wire seat, the connection of locking wire seat
Diaphragm.
Wherein locking wire nut is provided on locking wire seat.
Wherein the lower part of box body is provided with tabletting, and tabletting is fixed on box body by the first fixing piece.
Connecting hole is wherein provided on box body, connection array filtering cover and the connecting line of power-supply filter are stretched from connecting hole
Out.
Box cover is wherein stamped above box body, box cover is fixed on box body by the second fixing piece.
Connection copper post is wherein provided between box cover and printed board assembly.
Wherein signal conditioner further includes zeroing circuit, and sensor voltage signal is covered by array filtering, then zeroed
Circuit inputs printed board assembly after carrying out voltage bias adjustment.
Wherein power-supply filter input system is powered, and power-supply filter output connection voltage-stablizer, the output of voltage-stablizer
It powers for signal conditioner, and signal conditioner provides driving voltage for load cell.
Compared with prior art, the utility model has the beneficial effects that：The device includes a load cell and one
Signal conditioner, wherein load cell is electromechanical transformation device, and the pressure being subject to when for motor drive mechanism to be locked guided missile is real
When linear transformation be voltage signal, and the voltage signal is output to signal conditioner；When elastomer is by tension, cause favour
Stone electric bridge is uneven, and according to Hooke's law and resistance-strain principle, strain ga(u)ge exports the electricity linear with tension
Signal is pressed, which is only millivolt level；The milli that signal conditioner exports sensor is paid magnitude voltage signals and is filtered by array
Cover is filtered, amplifying circuit, hysteresis comparator circuit and driving circuit, finally output control signal, and control signal control is electronic
Mechanism action；Synchronous signal conditioning is provided with power-supply filter, and power-supply filter connects system power supply, and by filtering
It powers afterwards for signal conditioner and load cell；In synchronous signal conditioner using electromagnetic compatibility formula design, optimize circuit and
Box body structure reaches the effect of best electromagnetism interference.The device is with small in size, anti-electromagnetic interference capability is strong, dynamometry
Precision is high, temperature stability is good, high reliability.
Further, in the housing by elastomer and diaphragm seal setting, and by being provided with lock on 2 side of shell
Line seat exports voltage signal.
Further, the connecting line below box body is fixed by tabletting and box cover；And by opening up connection
Hole exports the connecting line for connecting array filtering cover and power-supply filter；It is simultaneously box cover and printing board group by connecting copper post
Part is not directly contacted with, it is therefore prevented that the abrasion to printed board assembly；It is fixed by fixing piece, connection is reliable, product can be made to reach
To the boundary condition of optimum measurement.
Further, zeroing circuit is further reduced error for being adjusted to the voltage signal of input.
The device of the utility model can be suitable for the Vertical Launch mechanism of various models, and the scope of application is wider.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model；
Fig. 2 is the working principle diagram of the utility model load cell；
Fig. 3 is the structural schematic diagram of load cell in the utility model；
Fig. 4 is the structural schematic diagram of signal conditioner in the utility model.
In figure：1 is diaphragm；2 be shell；3 be locking wire seat；4 be locking wire nut；5 be elastomer；6 be the first fixing piece；7
For tabletting；8 be box body；9 be array filtering cover；10 be power-supply filter；11 be connection copper post；12 be the second fixing piece；13
For box cover；14 be printed board assembly.
Specific embodiment
The technical solution of the utility model is further illustrated in the following with reference to the drawings and specific embodiments.
The utility model provides a kind of load cell control device, including load cell and signal conditioner；Its
Middle load cell is electromechanical transformation device, and the pressure real time linear being subject to when motor drive mechanism is locked guided missile is converted to voltage
Signal, and the voltage signal is output to signal conditioner；The voltage signal that signal conditioner exports sensor is put by filtering
Big circuit, hysteresis comparator circuit, driving circuit, finally output a control signal to motor drive mechanism, to control motor drive mechanism movement.
As shown in figure 3, load cell includes the shell 2 of sealing, shell 2 is internally provided with elastomer 5, elastomer 5
Be internally provided with strain gauge resistance composition Wheatstone bridge；The top of elastomer 5 is connected with diaphragm 1,1 output voltage of diaphragm
Signal；Locking wire seat 3 is provided on the side of shell 2, locking wire seat 3 is fixed on shell 2 by locking wire nut 4, wherein on diaphragm 1
Voltage signal pass through locking wire seat 3 export.
As shown in figure 4, signal conditioner includes the box body 8 of sealing, box body 8 is internally provided with array filtering cover 9 and electricity
Source filter 10, array filtering cover 9 are connect with printed board assembly 14, and the top of array filtering cover 9 is arranged in printed board assembly 14,
The upper opening of box body 8 is sealedly connected with box cover 13, and box cover 13 is covered on printed board assembly 14 by the fixation of the second fixing piece 12
Side, and connection copper post 11 is provided between printed board assembly 14 and box cover 13, connection copper post 11 makes printed board assembly 14 and box cover
There is certain interval between 13, prevent the abrasion between printed board assembly 14 and box cover 13；The lower section of box body 8 is fixed by first
Part 6 is connected with tabletting 7, and is provided with connecting hole on box body 8, wherein the connection of connection array filtering cover 9 and power-supply filter 10
Line is stretched out from connecting hole.
Preferably, the first fixing piece 6 and the second fixing piece 12 are cross recessed countersunk head sscrew.
Preferably, signal conditioner further includes zeroing circuit, and zeroing zeroing circuit is connect with array filtering cover 9.
Preferably, system power supply is input in power-supply filter, and power-supply filter connects voltage-stablizer, voltage-stablizer output
The utilization voltage of the present apparatus, while powering for signal conditioner and load cell, synchronous signal conditioner is also to force-measuring sensing
Device provides driving voltage.
The course of work of the utility model, as shown in Figure 1, wherein system power supply is surveyed by power-supply filter and voltage-stablizer
Force snesor and signal conditioner power supply；When wherein load cell experiences pressure, deformation occurs for elastomer 5, leads to Hui Si
Energization bridge is uneven, according to recklessly can law and resistance-strain principle, it is linear by diaphragm output and above-mentioned pressure
Voltage signal；Signal conditioner receives above-mentioned voltage signal, and is filtered by array filtering cover, amplifies conditioning, slow
It exports according to the drive voltage signal after pressure logic judgment after stagnant comparison and driving circuit to motor drive mechanism, to control electricity
The movement of motivation structure.
The course of work of load cell is in the utility model：Elastomer 5 is locked pressure when guided missile by motor drive mechanism
Power, therefore certain microstrain deformation occurs for elastomer 5, becomes so as to cause the strain gauge resistance inside elastomer 5
Change, uneven so as to cause the Wheatstone bridge of its composition, Wheatstone bridge is passed through by 1 output voltage signal of diaphragm
The connection of locking wire seat 3 and array filtering cover 9 passes to signal conditioner.
The utility model is in use：After motor drive mechanism push rod stretches out, the ballast that pressure sensor is subject to is negative
When lotus reaches 115 ± 15kgf, stablize output high level signal 28.5 × (1 ± 10%) VDC in place, stops motor drive mechanism dynamic
Make.During motor drive mechanism push rod is withdrawn, during pressure sensor is reduced to 90kgf by compressive load, stablize output
High level signal 28.5 × (1 ± 10%) VDC in place；When pressure sensor is reduced to (75 ± 15) kgf by compressive load, in place
High level signal is removed, and low level signal (0 ± 0.1) VDC is exported.
Claims (9)
1. a kind of load cell control device, which is characterized in that including power circuit components, power circuit components connect dynamometry
Sensor and signal conditioner；Wherein load cell includes elastomer (5), and the surface of elastomer (5) is provided with strain gauge electricity
Resistance composition Wheatstone bridge, elastomer (5) top are provided with the diaphragm (1) of output voltage signal, and signal conditioner receives above-mentioned
Voltage signal；Signal conditioner includes the box body (8) of sealing, and array filtering cover (9) and power filter are provided in box body (8)
Device (10), array filtering cover (9) connection printed board assembly (14), printed board assembly (14) output control signal；
The printed board assembly (14) includes sequentially connected amplifying circuit, hysteresis comparator circuit and driving circuit, driving circuit
Output control signal；
The power-supply filter (10) provides power supply disturbance inhibition and filtering processing for signal conditioner and load cell power supply；
Array filtering cover (9) connection diaphragm (1), and receive the voltage signal of its transmission.
2. load cell control device according to claim 1, which is characterized in that the elastomer (5) and diaphragm (1)
It is arranged in the shell (2) of sealing, the side of shell (2) is provided with locking wire seat (3), and locking wire seat (3) connects diaphragm (1).
3. load cell control device according to claim 2, which is characterized in that be provided on the locking wire seat (3)
Locking wire nut (4).
4. load cell control device according to claim 1, which is characterized in that the lower part of the box body (8) is arranged
Have tabletting (7), tabletting (7) is fixed on box body (8) by the first fixing piece (6).
5. load cell control device according to claim 4, which is characterized in that be provided with connection on the box body (8)
The connecting line of hole, connection array filtering cover (9) and power-supply filter (10) is stretched out from connecting hole.
6. load cell control device according to claim 4, which is characterized in that be stamped above the box body (8)
Box cover (13), box cover (13) are fixed on box body (8) by the second fixing piece (12).
7. load cell control device according to claim 6, which is characterized in that the box cover (13) and printing board group
Connection copper post (11) is provided between part (14).
8. load cell control device according to claim 1, which is characterized in that the signal conditioner further includes adjusting
Zero circuit, sensor voltage signal input printing after carrying out voltage bias adjustment by array filtering cover, then zeroed circuit
Board group part (14).
9. load cell control device according to claim 1, which is characterized in that power-supply filter (10) input
System power supply, and power-supply filter (10) output connection voltage-stablizer, the output of voltage-stablizer is signal conditioner power supply, and is believed
Number conditioner provides driving voltage for load cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721797463.0U CN208155488U (en) | 2017-12-20 | 2017-12-20 | A kind of load cell control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721797463.0U CN208155488U (en) | 2017-12-20 | 2017-12-20 | A kind of load cell control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208155488U true CN208155488U (en) | 2018-11-27 |
Family
ID=64414126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721797463.0U Active CN208155488U (en) | 2017-12-20 | 2017-12-20 | A kind of load cell control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208155488U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340516A (en) * | 2021-06-07 | 2021-09-03 | 中国工程物理研究院总体工程研究所 | Pressure measuring cell |
-
2017
- 2017-12-20 CN CN201721797463.0U patent/CN208155488U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340516A (en) * | 2021-06-07 | 2021-09-03 | 中国工程物理研究院总体工程研究所 | Pressure measuring cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200924 Address after: 710110 801, 8th floor, No.1 complex building, No.166, West Avenue, hi tech Zone, Xi'an City, Shaanxi Province Patentee after: AVIC testing instrument (Xi'an) Co.,Ltd. Address before: 723007 Xinyuan Road, North Zone, Hanzhoung economic development, Shaanxi Patentee before: ZHONGHANG ELECTRONIC MEASURING INSTRUMENTS Co.,Ltd. |
|
| TR01 | Transfer of patent right |