CN2043357U - Hand-held hardness tester - Google Patents
Hand-held hardness tester Download PDFInfo
- Publication number
- CN2043357U CN2043357U CN 89200438 CN89200438U CN2043357U CN 2043357 U CN2043357 U CN 2043357U CN 89200438 CN89200438 CN 89200438 CN 89200438 U CN89200438 U CN 89200438U CN 2043357 U CN2043357 U CN 2043357U
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- hardness number
- hardness
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- hand
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a hand-held hardness tester, which is used for testing the hardness of an object. The hand-held hardness tester is composed of an impact sensor (1), an analog-to-digital conversion system (2), a one-chip microprocessor (3), a memory (4), a display (5), a keyboard (6) and a printing system (7). The Ridgways' hardness number, the Rockwell hardness number, the Brinell hardness number, the Vickers hardness number and the Shore hardness number can be displayed when the tester is used for testing, and the Ridgways' hardness number, the Rockwell hardness number, the Brinell hardness number, the Vickers hardness number and the Shore hardness number can be outputted and printed. Compared with the prior art, the utility model has the advantages of small size, convenient carryover, low cost, high testing precision, reliable and convenient use, etc.
Description
The utility model is a kind of tester that is used for Measuring Object hardness.
Existing hardness-testing device, the lee ' hardness tester as Switzerland produces mainly can show that by one the sclerometer of lee ' hardness value and sensor constitute, this tester only can show single lee ' hardness value, and can not the printing test result; And for example, the hardness tester that mechanical engineering consulting service company produces, form by portable common computer and shock transducer, though this instrument can convert measured lee ' hardness value to Rockwell, Brinell figure, and can print its result, but it is to adopt multi-purpose computer to carry out numerical value and test processes, so whole instrument involves great expense, measuring accuracy is lower, and volume is big etc.
Change the multi-purpose computer test macro into special-purpose single-sheet miniature disposal system in order to address the above problem the utility model, make tester test data can not only be converted to Rockwell, Bu Shi, Vickers, Shore value from the lee ' hardness value, but also can reduce cost, improve measuring accuracy, reduce volume.
The utility model is to realize like this, a kind of hand-held hardness-testing device is made up of shock transducer and sclerometer, it is characterized in that, described sclerometer includes onechipmicroprocessor, memory, display, keyboard, print system, and the analog to digital conversion system, wherein shock transducer is connected with the A-D converter circuit, and A-D converter is connected with onechipmicroprocessor, memory, display, keyboard circuit respectively.The principle of work of this instrument is, during test object hardness, shock transducer is obtained the analog electrical signal of a hardness number by the testee surface, this signal is imported in the A-D converter, carry out signal and amplify conversion, after converting digital signal to, enter again in onechipmicroprocessor and the memory and store, handle, show by display then, the operable key dish enters onechipmicroprocessor with message from keyboard and handles simultaneously, makes shown lee ' hardness value convert Bu Shi to, Rockwell, the Vickers Shore hardnes figure, and, promptly finish test process by the print system output print.
Enumerate an embodiment below.
Fig. 1 is a block scheme of the present utility model,
Fig. 2 is a circuit diagram of the present utility model,
See Fig. 1, among Fig. 2, (1) shock transducer, (2) analog to digital conversion system, (3) onechipmicroprocessor, (4) memory, (5) display, (6) keyboard, (7) print system.
Sensor in this tester adopts existing shock transducer (1); Onechipmicroprocessor (3) adopts the 80C31 type; Memory (4) adopts the 27C256 type.
See Fig. 2, A/D conversion system (2) includes an analog to digital converter (ADC0801) and an amplifier (358A), in order to improve processing accuracy, on the negative input end of amplifier, increases by a voltage U
4, make the non-processing section of measured signal, not within 0～256 bit digital quantity, improved processing accuracy thus.
The utility model has the advantages that, when test, energy display respectively Richter scale, Bu Shi, Rockwell, Vickers, Shore hardnes figure, and can output print. And it is low to have a cost, and volume is little, measuring accuracy height, the advantage such as easy to use.
Claims (2)
1, a kind of hand-held hardness-testing device, form by shock transducer and sclerometer, it is characterized in that: described sclerometer includes onechipmicroprocessor (3), memory (4), display (5), keyboard (6), print system (7), and analog to digital conversion system (2), wherein shock transducer (1) is connected with the analog to digital conversion circuit system, and analog to digital conversion system (2) is connected with onechipmicroprocessor (3), memory (4), display (5), keyboard (6) circuit respectively again.
2, by the described tester of claim 1, it is characterized in that: increase a voltage (U on the amplifier negative input end in A/D conversion system (2)
4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89200438 CN2043357U (en) | 1989-01-13 | 1989-01-13 | Hand-held hardness tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89200438 CN2043357U (en) | 1989-01-13 | 1989-01-13 | Hand-held hardness tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2043357U true CN2043357U (en) | 1989-08-23 |
Family
ID=4858528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89200438 Pending CN2043357U (en) | 1989-01-13 | 1989-01-13 | Hand-held hardness tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2043357U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322321C (en) * | 2004-01-06 | 2007-06-20 | 武汉大学 | Full digital type vickers hardness scale capable of converting dial of experimental result |
-
1989
- 1989-01-13 CN CN 89200438 patent/CN2043357U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322321C (en) * | 2004-01-06 | 2007-06-20 | 武汉大学 | Full digital type vickers hardness scale capable of converting dial of experimental result |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication |