CN108414353A - Force-sensing circuit - Google Patents
Force-sensing circuit Download PDFInfo
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- CN108414353A CN108414353A CN201810035031.9A CN201810035031A CN108414353A CN 108414353 A CN108414353 A CN 108414353A CN 201810035031 A CN201810035031 A CN 201810035031A CN 108414353 A CN108414353 A CN 108414353A
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- force
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- 238000004891 communication Methods 0.000 claims abstract description 9
- 238000004088 simulation Methods 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims abstract description 5
- 238000012546 transfer Methods 0.000 claims abstract description 4
- 230000035807 sensation Effects 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 9
- 238000001514 detection method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 241000837181 Andina Species 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The present invention relates to a kind of force-sensing circuits.The present invention includes pressure sensor, is used for linking probe, acquires pressure simulation signal；AD converter, for the pressure simulation signal to be converted to pressure on the number signal；Microcontroller, the pressure on the number signal that the AD converter generates is received in connection, for converting the pressure on the number signal to pressure Value Data in real time；Memory module, for accumulating the pressure Value Data for storing the microcontroller output；Key-press module, for receiving the external command to the microcontroller；OLED display module, the pressure Value Data for microcontroller output described in real-time display；Communication module is gone out for obtaining the pressure Value Data in the memory module by the microcontroller, and by the data line ports module transfer；DC power supplier, for providing working power for above-mentioned modules.The present invention can carry out force prompting by the way that sound sensation and vision are combined, improve accuracy and operability that force value judges.
Description
Technical field
The present invention relates to electric connector detection technique field, specifically a kind of force-sensing circuit.
Background technology
The industry direction of the present invention uses in the detection process of army's electric connector, is mainly used for cable and checks and accepts crimp type
Whether connector, detection contact reach defined retentivity.Common detection method has：It is manually light to draw conducting wire (rear end), visit
Needle presses (front end), mechanical force application means detect (front end) three kinds of methods.It is manually light to draw conducting wire and probe pressure to the size that exerts a force
It is unable to control, whether reaches retentivity by operation micro-judgment, can not quantify, certainly will there is individual difference, Er Qieshi
It is excessive that it is easy to cause force in the operation of border, and then connector is caused to damage；Although mechanical force application means pressure can be with control force
Size, but during manual operation actual operating force whether be more than limitation can not record, still cannot to detection exert a force size
Strictly monitored, simultaneously as judge whether force size is suitable using the method for visual (having graticule on tool), behaviour
It is not convenient enough to make, and be easy to cause operating personnel's fatigue.People are highly desirable to obtain a kind of dynamometry instrument that technique effect is excellent, by
This beforehand research present invention.
Invention content
Place aiming at the above shortcomings existing in the prior art, the technical problem to be solved in the present invention is to provide a kind of dynamometry
Circuit.
Present invention technical solution used for the above purpose is：A kind of force-sensing circuit, including following module：
Pressure sensor is used for linking probe, acquires pressure simulation signal；
AD converter connects the pressure sensor, for the pressure simulation signal to be converted to pressure on the number signal；
Microcontroller connects the AD converter, the pressure on the number signal that the AD converter generates is received, for real-time
Ground converts the pressure on the number signal to pressure Value Data；
Memory module connects the microcontroller, for accumulating the pressure Value Data for storing the microcontroller output；
Key-press module connects the microcontroller, for receiving the external command to the microcontroller；
OLED display module connects the microcontroller, the pressure value number for microcontroller output described in real-time display
According to；
Communication module connects the microcontroller, for obtaining the pressure in the memory module by the microcontroller
Force value data, and gone out by the data line ports module transfer；
Data line ports module connects the communication module；
DC power supplier, for providing working power for above-mentioned modules.
Further include charging module, connect the DC power supplier and data line end mouth mold block, for being the direct current
Source module charges.
The charging module includes charging circuit and regulator circuit；The input terminal of the charging circuit connects the data line
Port module, control terminal connect the microcontroller, and output end connects the regulator circuit；The input terminal of the regulator circuit connects
The charging circuit is connect, output end connects the DC power supplier.
Further include auditory tone cues module, connect the microcontroller, is carried for being sent out under the control of the microcontroller
Show sound；
The microcontroller setting upper limit of pressure value and lower limiting value, when the pressure on the number signal corresponding pressure value is super
When crossing upper limit value or being less than lower limiting value, triggers the auditory tone cues module and send out prompt tone.
The auditory tone cues module has a variety of voice prompts, and different prompts is triggered under the control of the microcontroller
Sound.
The present invention has the following advantages and beneficial effects：
1, the present invention is Promethean uses sound sensation (short " drop " adds " yowl ") and vision (visual dynamic force value and shape
State is shown) combined force based reminding method, improve the accuracy and operability that force value judges in detection process.
2, the present invention realizes peak-data record (pressure Value Data) and force value data export function by memory module,
Data safeguard is provided for detection quality control and subsequent quality analysis.
Description of the drawings
Fig. 1 is the overall structure block diagram of the present invention；
Fig. 2 is the structure chart of the AD converter in the embodiment of the present invention；
Fig. 3 is the structure chart of the charging module in the embodiment of the present invention；
Fig. 4 is the structure chart of the voltage stabilization part of the charging module in the embodiment of the present invention；
Fig. 5 is the structure chart of the memory module in the embodiment of the present invention；
Fig. 6 is the structure chart of the communication module in the embodiment of the present invention；
Fig. 7 is the structure chart of the microcontroller in the embodiment of the present invention.
Specific implementation mode
The present invention is described in further detail with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of force-sensing circuit, including following module：Pressure sensor is used for linking probe, acquires pressure
Analog signal；AD converter connects the pressure sensor, for the pressure simulation signal to be converted to pressure on the number letter
Number；Microcontroller connects the AD converter, receives the pressure on the number signal that the AD converter generates, in real time will
The pressure on the number signal is converted into pressure Value Data；Memory module connects the microcontroller, described micro- for accumulating storage
The pressure Value Data of controller output；Key-press module connects the microcontroller, for receiving the outside to the microcontroller
Instruction；OLED display module connects the microcontroller, the pressure Value Data for microcontroller output described in real-time display；
Communication module connects the microcontroller, for obtaining the pressure Value Data in the memory module by the microcontroller,
And it is gone out by the data line ports module transfer；Data line ports module connects the communication module；DC power supply mould
Block, for providing working power for above-mentioned modules.
Further include charging module, connect the DC power supplier and data line end mouth mold block, for being the direct current
Source module charges.The charging module includes charging circuit and regulator circuit；The input terminal of the charging circuit connects the number
According to line port module, control terminal connects the microcontroller, and output end connects the regulator circuit；The input of the regulator circuit
End connects the charging circuit, and output end connects the DC power supplier.
Further include auditory tone cues module, connect the microcontroller, is carried for being sent out under the control of the microcontroller
Show sound；The microcontroller setting upper limit of pressure value and lower limiting value, when the pressure on the number signal corresponding pressure value is more than
Upper limit value or less than lower limiting value when, trigger the auditory tone cues module and send out prompt tone.The auditory tone cues module has a variety of
Voice prompt triggers different voice prompts under the control of the microcontroller.
As shown in Fig. 2, carrying out the signal acquisition of pressure sensor using the special A/D chip of high-precision, miniaturized pressure is passed
Sensor carries out function with this chip and is combined, and has reached good AD values effect, calibration value is higher.In one embodiment of the present of invention
In, AD converter use special AD conversion chip HX711, including positive-negative-positive silicon triode Q3, resistance R8, R14, R15, R18,
R19, capacitance C9, C14, C19 and plug J3.Wherein, plug J3 receptions are obtained by the pressure sensor by the external world
Signal intensity carries out signal integration, amplification, analog-to-digital conversion, from SCK and DOUT pins by INA- and INA+ pins through HX711
Output digit signals give microcontroller processing.
As shown in figure 3, in one embodiment of the invention, the composition of charging module is as follows：Core is TP4056 chips,
It is that a complete single-unit lithium ion battery uses the linear charger of constant current/constant voltage.Utilize the power of chip interior
Transistor carries out constant current and constant-voltage charge to DC power supplier (rechargeable battery).Charging current can be programmed with non-essential resistance
Setting, maximum continue charging current up to 1A, need not separately add blocking diode and current sense resistor.BAT pins are battery
Connecting pin, to battery provide supply current and 4.2V limitation voltage.LED1 and LED2 is shown respectively to be charged and is filling
State when electricity is completed, with different colours to distinguish.As shown in figure 4, the attached voltage stabilizing function of charging module, master chip are
TPS76333 is constituted as follows：Capacitance C12, C13, electrolytic capacitor E2 can stablize and control voltage in 3.3V or so.
As shown in figure 5, in one embodiment of the invention, the function of memory module is as follows：W25X80 be it is a can
Serial (SPI) storage unit of quick access path is provided for system program, but be a ideal core application,
The memory of text file and data.It supports the single power supply power supply of 2.7~3.6V.
As shown in fig. 6, in one embodiment of the invention, the composition of communication module is as follows：Core is CH340T chips,
Receive signal RXD and TXD that prime microcontroller is sent, is handled and decoded by chip interior, data can be passed through data
Line port module exports to computer from D+ and D-.Periphery is equipped with crystal oscillating circuit, and composition has：Capacitance C10, C11, C15, crystal oscillator
12MHz。
Data line ports module can use routine mini USB ports to charge, and DC power supply is built-in rechargeable battery, and power consumption is few, lead to
Cross working condition and charged state that OLED display module shows product.Circuit structure is compact, and component mainly uses patch
Packing forms are convenient for hand-held.As shown in fig. 7, microcontroller selects 32 microcontrollers, pin function is powerful, expands function
Open up the advantage for there are other low bits MCUs incomparable.OLED display module selects low power consumption OLED display module, low in energy consumption,
Relative to traditional LED can the more characters of reality and function, it is also more energy efficient for traditional liquid crystal, occupy microcontroller pin more
Few, the uniqueness with technology is innovative.
The upper limit value and lower limiting value of pressure value can be arranged in microcontroller, when test value reaches upper limit or lower limit
When, different auditory tone cues are sent out by auditory tone cues module.Product can under the conditions of -25 DEG C~70 DEG C steady operation.Product
Overvoltage protection, overcurrent protection may be implemented, and state of charge can be prompted by display screen.Compact overall structure, dynamically with static state
It is functional.Have a wide range of application, market prospects are good.With more huge economic value and social value.
In another embodiment of the present invention, pressure, the upper limit value reinforced and lower limiting value are applied to pressure sensor
It differs, test effect is auditory tone cues module short one sound of sound when reaching lower limiting value 10N, and sound module is long when being more than upper limit 33N
A sound is rung, prompt can not be further continued for intensified pressure test；And there is writing function (by memory module cumulative record), number can be used
Data are exported according to line connection computer end；It is another have the difference is that：Menu alignment option is selected, if it is desired to being pressure sensor
It recalibrates, selects this function；In order to accurately reach calibration degree, five calibration datum marks are provided with for the invention tester, point
It Wei not 0N, 10N, 20N, 30N, 40N and 50N.Wherein 0N is zero point correction, and 50N is full scale calibration, and general forcing press test is
There are this 2 calibration values.This tester adds three datum marks so that the AD sampled value linearities are more preferable, calibration accuracy higher, together
When can make up the linearity of pressure sensor itself, the novelty with scientific research technology.
Claims (5)
1. a kind of force-sensing circuit, which is characterized in that including following module：
Pressure sensor is used for linking probe, acquires pressure simulation signal；
AD converter connects the pressure sensor, for the pressure simulation signal to be converted to pressure on the number signal；
Microcontroller connects the AD converter, receives the pressure on the number signal that the AD converter generates, in real time will
The pressure on the number signal is converted into pressure Value Data；
Memory module connects the microcontroller, for accumulating the pressure Value Data for storing the microcontroller output；
Key-press module connects the microcontroller, for receiving the external command to the microcontroller；
OLED display module connects the microcontroller, the pressure Value Data for microcontroller output described in real-time display；
Communication module connects the microcontroller, for obtaining the pressure value in the memory module by the microcontroller
Data, and gone out by the data line ports module transfer；
Data line ports module connects the communication module；
DC power supplier, for providing working power for above-mentioned modules.
2. a kind of force-sensing circuit according to claim 1, which is characterized in that further include charging module, connect the direct current
Power module and data line end mouth mold block, for charging for the DC power supplier.
3. a kind of force-sensing circuit according to claim 2, which is characterized in that the charging module includes charging circuit and steady
Volt circuit；The input terminal of the charging circuit connects the data line ports module, and control terminal connects the microcontroller, output
End connects the regulator circuit；The input terminal of the regulator circuit connects the charging circuit, and output end connects the direct current
Source module.
4. a kind of force-sensing circuit according to claim 1, which is characterized in that further include auditory tone cues module, described in connection
Microcontroller, for sending out prompt tone under the control of the microcontroller；
The microcontroller setting upper limit of pressure value and lower limiting value, when the pressure on the number signal corresponding pressure value is more than upper
Limit value or less than lower limiting value when, trigger the auditory tone cues module and send out prompt tone.
5. a kind of force-sensing circuit according to claim 4, which is characterized in that the auditory tone cues module has a variety of prompts
Sound triggers different voice prompts under the control of the microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810035031.9A CN108414353A (en) | 2018-01-15 | 2018-01-15 | Force-sensing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810035031.9A CN108414353A (en) | 2018-01-15 | 2018-01-15 | Force-sensing circuit |
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| Publication Number | Publication Date |
|---|---|
| CN108414353A true CN108414353A (en) | 2018-08-17 |
Family
ID=63125623
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|---|---|---|---|
| CN201810035031.9A Pending CN108414353A (en) | 2018-01-15 | 2018-01-15 | Force-sensing circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844677A (en) * | 2018-08-31 | 2018-11-20 | 无锡市瑞丰计量科技有限公司 | A kind of force snesor calibrating installation |
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2018
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| CN202075091U (en) * | 2011-04-07 | 2011-12-14 | 西安理工大学 | Real time pressure display and alarm device |
| CN102860831A (en) * | 2012-09-03 | 2013-01-09 | 杭州电子科技大学 | Uterine contraction pressure monitoring system and dynamic pressure calibrating method thereof |
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Application publication date: 20180817 |
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