CN209707291U - A kind of soft material hardness measuring device - Google Patents
A kind of soft material hardness measuring device Download PDFInfo
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- CN209707291U CN209707291U CN201920314409.9U CN201920314409U CN209707291U CN 209707291 U CN209707291 U CN 209707291U CN 201920314409 U CN201920314409 U CN 201920314409U CN 209707291 U CN209707291 U CN 209707291U
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- probe
- pressure sensor
- measuring device
- soft material
- compressing member
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Abstract
The utility model provides a kind of soft material hardness measuring device, including shell, display screen and on & off switch, reset key on the shell is set, lean out the probe of outer casing bottom and built-in probe, and the measuring mechanism that setting is fixedly connected inside the shell and with probe, measuring mechanism and display screen and on & off switch, reset key are electrically connected；Measuring mechanism includes the digital sampling and processing being carried on baffle, the S type pressure sensor being threadedly coupled with baffle, the nano pressure sensor being fixedly connected by bracket component with S type pressure sensor, and it is bolted in the spring-compressed component of nano pressure sensor bottom, spring-compressed component and probe are threadedly connected to one.The measuring device structure is simple, easy to operate and easy to carry, and measurement result is accurate, can be widely applicable to the measurement of different hardness range, and practicability is good.
Description
Technical field
The utility model relates to a kind of measuring devices, and in particular to a kind of soft material hardness measuring device.
Background technique
In robotic assisted surgery field, tissue characteristics are often considered as biomarker, therefore biological properties
It determines most important for description health tissues and pathological tissues.By numerous studies, according to measurement tissue elasticity (or hardness)
Sensor mechanism, measuring system can be divided into two major classes: active sensing and passive sensing.Currently, generalling use the survey of active sensing
Amount system or device mainly combine active vibration element and passive sensing element, by the variation for measuring resonant frequency
Estimate elasticity (or hardness) parameter of contact tissue, usually structure is complicated, trivial operations for this kind of hardness measuring device, measurement knot
Fruit is only estimated value, and accuracy is bad.
Therefore, the drawbacks described above for how overcoming the prior art, designing one kind can be according to load or the relationship of depth of cup
To measure the measuring device of soft tissue to be measured (or soft material) elasticity number (or hardness number), just become those skilled in the art urgently
Technical problem to be solved.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the utility model provides a kind of soft material hardness measurement dress
It sets, the measuring device structure is simple, easy to operate, and easy to carry, measurement result is accurate, can be widely applicable to different hardness range
Measurement, practicability is good.
In order to achieve the above object, the utility model uses following technical scheme:
Display screen and on & off switch, reset on the housing is arranged in a kind of soft material hardness measuring device, including shell
Key leans out the probe of the outer casing bottom and built-in probe, and is arranged in the shell and is fixedly connected with the probe
Measuring mechanism, the measuring mechanism and the display screen and on & off switch, reset key are electrically connected；The measuring mechanism includes holding
The digital sampling and processing being loaded on baffle, the S type pressure sensor being threadedly coupled with the baffle, by bracket component with
The nano pressure sensor that the S type pressure sensor is fixedly connected, and it is bolted in nano pressure sensor bottom
Spring-compressed component, the spring-compressed component and the probe are threadedly connected to one.
Further, the spring-compressed component includes compressed spring and the first compression member set gradually from top to bottom
Part, the second compressing member, third compressing member, first compressing member and nano pressure sensor screw fastening connect
It connects, be bolted at the top of second compressing member in the middle part of first compressing member and touched with the nano pressure sensor
It connects, the bottom piston formula of second compressing member is socketed in the third compressing member, and the compressed spring shores setting
Between first compressing member and third compressing member, the probe is bolted in the bottom of the third compressing member.
Further, the bracket component includes the first support and second support of screw connection, in the first support
The threaded hole being longitudinally spirally connected equipped with one with the S type pressure sensor, the second support be equipped at least one with it is described
The screw hole of the longitudinally secured connection of nano pressure sensor.
Further, the peripheral side circumferential direction of the nano pressure sensor and the spring-compressed component is cased with a rigid crust
Body, the stiff case and the probe are integrally formed.
Further, the top of the stiff case is equipped with the screw hole fixed with the second support transverse direction screw.
Further, the shell in cuboid and have sliceable structure, including be fixedly connected by screw first
Shell and second housing.
Further, it is cylinder type that the outer casing bottom, which is provided with circular hole and the probe, and the aperture of the circular hole is greater than
The diameter of the probe.
Further, STM32 built in the digital sampling and processing handles chip.
Further, the probe is leant out outside probe and the length of the probe is greater than the length of the probe.
Compared with the prior art, the utility model has the following beneficial effects:
Soft material hardness measuring device provided by the utility model, structure is simple, easy to operate, when use only need it is hand-held should
Probe and probe are close to tested soft material by measuring device, and downward push can show measured material in display screen
Hardness (or hardness level).The measuring device is easy to carry, and measurement result is accurate, and can be widely applicable to different hardness range
Measurement, practicability are good.
Detailed description of the invention
Fig. 1 is the utility model overall appearance schematic diagram；
Fig. 2 is the utility model internal structure chart；
Fig. 3 is the utility model internal structure cross-sectional view；
Fig. 4 is the utility model partial structural diagram.
Specific embodiment
The utility model is described in further detail with specific embodiment with reference to the accompanying drawing.The embodiment
Example be shown in the accompanying drawings, the specific embodiment described in following the embodiments of the present invention is only used as practical
The exemplary illustration of novel specific embodiment, it is intended to for explaining the utility model, and be not configured to the utility model
Limitation.
A kind of soft material hardness measuring device, as shown in Figure 1, it is whole in a rectangular parallelepiped shape, including shell 10 and lean out shell
The probe 20 of 10 bottoms, probe 20 are cylinder type, wherein display screen 11(such as LED display is provided on shell 10, but
It is without being limited thereto) and control respectively the measuring device switch, reset on & off switch 12, reset key 13, display screen 11 for show to
The measurement hardness of object is surveyed, 20 built-in probes 21 of popping one's head in, probe 21 is leant out outside probe 20 and the length of probe 21 is greater than probe 20
Length.Above-mentioned soft material hardness measuring device, as shown in Fig. 2, further including being arranged in shell 10 and being fixedly connected with probe 21
Measuring mechanism, measuring mechanism is electrically connected with display screen 11 and on & off switch 12, reset key 13.
As shown in Fig. 2, shell 10 is in cuboid and has sliceable structure, including the first shell 14 and second housing 15.
First shell 14 and second housing 15 by both the equally distributed screw of surrounding opposite position be fixedly connected on one, splice
Formula constitutes shell 10.The bottom of shell 10 is also provided with the circular hole stretched out convenient for probe 20, and the aperture of circular hole is slightly larger than probe 20
Diameter avoids shell 10 and probe 20 from generating friction and has an impact to measurement result.
As shown in figure 3, measuring mechanism includes the digital sampling and processing 31 being carried on baffle 34, with 34 screw thread of baffle
The S type pressure sensor 32 of connection, the nano pressure sensor being fixedly connected by bracket component with S type pressure sensor 32
(model nano17) 33, and it is bolted in the spring-compressed component 40 of 33 bottom of nano pressure sensor, spring-compressed component
40 are threadedly connected to one with probe 21.The horizontal fixed setting of baffle 34 (such as weld, but not limited to this) inside shell 10,
It is provided with tapped through hole 91 in the middle part of baffle 34, is provided with screw hole in the middle part of the top and bottom ends of S type pressure sensor 32, top middle portion
Screw hole is corresponding with the position of tapped through hole 91, and sunk screw sequentially passes through tapped through hole 91 and screw hole can be by baffle 34 and S type
Pressure sensor 32 is fastenedly connected.
It being shown in Fig. 3, bracket component includes passing through the first support 35 interconnected of screw 37 and second support 36, and first
The middle part of bracket 35 is equipped with a threaded hole 92, and the threaded hole 92 is opposite with the screwhole position of 32 center bottom of S type pressure sensor
It answers, sunk screw sequentially passes through threaded hole 92 and screw hole can be by first support 35 and the longitudinally secured spiral shell of S type pressure sensor 32
It connects.Second support 36 is equipped at least one screw hole with the longitudinally secured connection in 33 top of nano pressure sensor (in figure not
Show), thus second support 36 and nano pressure sensor 33 can be fastenedly connected.
As shown in Figures 3 and 4, spring-compressed component 40 includes the first compressing member 41, second set gradually from top to bottom
Compressing member 42, third compressing member 43 and compressed spring 44, the top of the first compressing member 41 and nano pressure sensor 33
Bottom be fastenedly connected by screw, the top of the second compressing member 42 be bolted in the first compressing member 41 middle part and and nano
The bottom of pressure sensor 33 touches, and the bottom piston formula of the second compressing member 42 is socketed in third compressing member 43, compression
Spring 44, which is shored, to be arranged between the first compressing member 41 and third compressing member 43, and 21 internal and external threads of probe are connected to third pressure
The bottom of contracting element 43.
The peripheral side circumferential direction of nano pressure sensor 33 and spring-compressed component 40 is cased with the rigidity to shield
Shell 38, and stiff case 38 and probe 21 are integrally formed, and probe 21 is also made of rigid material.The top of stiff case is set
There is the screw hole 39 fixed with the lateral screw of second support 36.
Digital sampling and processing 31 is for acquiring number measured by S type pressure sensor 32 and nano pressure sensor 33
According to, be internally provided with STM32 processing chip.Nano pressure sensor 33 is used to measure the numerical value of internal force, S type pressure sensor
32 are used to measure total power numerical value when pushing, and stiff case 38, due to being unlikely to deform, can guarantee S type pressure in pushing process
The gross pressure of sensor measurement is total power numerical value.
The course of work of the utility model soft material hardness measuring device is as follows:
In use, pressing on & off switch 3 opens measuring device, hold in the middle part of measuring device, probe 20 is directed at tested softwood
Material presses vertically downward, it is assumed that tested soft material surface flat-satin, since probe 21 stretches out outside probe 20 when starting to push, this
When probe measure total power numerical value be equal to measuring device internal force numerical value；When being depressed into a certain degree, stiff case 38 and tested
When soft material just contacts, probe 21 is concordant with the end of probe 20, and digital sampling and processing 31 resets the numerical value of total power；
Continue to push, since the probe 21 of stiff case 38 and rigid is not deformed by pressure, 21 retraction of probe probe is internal, and
Probe 21 is fixedly connected with 40 internal and external threads of spring-compressed component, and compressed spring 44 is compressed, and S type pressure sensor 32 measures always
The numerical value of power rises comparatively fast, when the numerical value of total power reaches twice of internal force numerical value, at this point, digital sampling and processing 31 records
Under internal force at this time numerical value, and the internal force numerical value such as is filtered at the processing and obtains the hardness of tested soft material, be shown in display
On screen 11.It is possible to further according to set hardness level parameter, after being handled by digital sampling and processing 31,
Directly show that the hardness level of tested soft material, measurement result are accurate on display screen 11.After measurement, reset key 13 can be pressed
In order to measure again.
When the hardness of tested soft material is smaller, the utility model measuring device power required when pushing is smaller；Work as clearing
When total power afterwards is twice of interior force value, the decrement of compressed spring 44 is smaller, i.e. the interior force value of measuring device is smaller.When tested
When the hardness of object is larger, then biggish power is needed to push the measuring device；Total power after clearing rises to twice of internal force
When, the decrement of compressed spring 44 is larger, and the interior force value of measuring device is larger.Thus, it is possible to which the numerical value by internal force distinguishes simultaneously
Processing, obtain the hardness of different soft materials, in addition, the hardness range of the surveyed soft material of the utility model measuring device with its inside
The coefficient of elasticity of compressed spring is related, compressed spring that can be different by selection coefficient of elasticity, different to be widely used in measurement
The soft material of hardness level.
In conclusion soft material hardness measuring device provided by the utility model, structure is simple, easy to operate, when use
It only needs to hold the measuring device, probe and probe is close to tested soft material, and press down on and can show in display screen
The hardness (or hardness level) of measured material.The measuring device is easy to carry, and measurement result is accurate, and can be widely applicable to difference
The measurement of hardness range, practicability are good.
It should be noted that above-described embodiment is to illustrate rather than to limit the utility model to the utility model
System, and those skilled in the art can be designed alternative embodiment without departing from the scope of the appended claims.In
In claim, word " comprising " does not exclude the presence of data or step not listed in the claims.
Claims (9)
1. a kind of soft material hardness measuring device, it is characterised in that: including shell, display screen on the housing is arranged and opens
Crucial, reset key leans out the probe of the outer casing bottom and built-in probe, and be arranged in the shell and with the probe
The measuring mechanism being fixedly connected, the measuring mechanism and the display screen and on & off switch, reset key are electrically connected；The measuring machine
Structure includes the digital sampling and processing being carried on baffle, and the S type pressure sensor being threadedly coupled with the baffle passes through branch
The nano pressure sensor that frame component is fixedly connected with the S type pressure sensor, and it is bolted in the nano pressure sensing
The spring-compressed component of device bottom, the spring-compressed component and the probe are threadedly connected to one.
2. a kind of soft material hardness measuring device according to claim 1, it is characterised in that: the spring-compressed component packet
The first compressing member, the second compressing member, the third compressing member for including compressed spring and setting gradually from top to bottom, described first
Compressing member is fastenedly connected with the nano pressure sensor screw, is bolted in described first at the top of second compressing member
It is touched in the middle part of compressing member and with the nano pressure sensor, the bottom piston formula of second compressing member is socketed on described
In third compressing member, the compressed spring, which is shored, to be arranged between first compressing member and third compressing member, described
Probe is bolted in the bottom of the third compressing member.
3. a kind of soft material hardness measuring device according to claim 1, it is characterised in that: the bracket component includes spiral shell
The first support and second support of connection are followed closely, what the first support was longitudinally spirally connected equipped with one with the S type pressure sensor
Threaded hole, the second support are equipped with the screw hole of at least one and the longitudinally secured connection of nano pressure sensor.
4. a kind of soft material hardness measuring device according to claim 3, it is characterised in that: the nano pressure sensor
It is cased with a stiff case with the peripheral side circumferential direction of the spring-compressed component, the stiff case and the probe are integrally formed.
5. a kind of soft material hardness measuring device according to claim 4, it is characterised in that: the top of the stiff case
Equipped with the screw hole fixed with the second support transverse direction screw.
6. a kind of soft material hardness measuring device according to claim 1, it is characterised in that: the shell in cuboid simultaneously
With sliceable structure, including the first shell and second housing being fixedly connected by screw.
7. a kind of soft material hardness measuring device according to claim 6, it is characterised in that: the outer casing bottom is provided with circle
Hole and the probe are cylinder type, and the aperture of the circular hole is greater than the diameter of the probe.
8. a kind of soft material hardness measuring device according to claim 1, it is characterised in that: the data acquisition process mould
STM32 built in block handles chip.
9. a kind of soft material hardness measuring device according to claim 1, it is characterised in that: it is outer that the probe leans out probe
And the length of the probe is greater than the length of the probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920314409.9U CN209707291U (en) | 2019-03-13 | 2019-03-13 | A kind of soft material hardness measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920314409.9U CN209707291U (en) | 2019-03-13 | 2019-03-13 | A kind of soft material hardness measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209707291U true CN209707291U (en) | 2019-11-29 |
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ID=68644017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920314409.9U Active CN209707291U (en) | 2019-03-13 | 2019-03-13 | A kind of soft material hardness measuring device |
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| Country | Link |
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| CN (1) | CN209707291U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765133A (en) * | 2019-03-13 | 2019-05-17 | 南京邮电大学 | A kind of soft material hardness measuring device |
| CN113203631A (en) * | 2021-05-08 | 2021-08-03 | 河南隆飞路桥工程有限公司 | Highway subgrade compressive strength testing arrangement |
-
2019
- 2019-03-13 CN CN201920314409.9U patent/CN209707291U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765133A (en) * | 2019-03-13 | 2019-05-17 | 南京邮电大学 | A kind of soft material hardness measuring device |
| CN109765133B (en) * | 2019-03-13 | 2024-01-19 | 南京邮电大学 | Hardness measuring device for soft material |
| CN113203631A (en) * | 2021-05-08 | 2021-08-03 | 河南隆飞路桥工程有限公司 | Highway subgrade compressive strength testing arrangement |
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