CN2665681Y - Tuning fork frequency determinator - Google Patents
Tuning fork frequency determinator Download PDFInfo
- Publication number
- CN2665681Y CN2665681Y CN 200320108626 CN200320108626U CN2665681Y CN 2665681 Y CN2665681 Y CN 2665681Y CN 200320108626 CN200320108626 CN 200320108626 CN 200320108626 U CN200320108626 U CN 200320108626U CN 2665681 Y CN2665681 Y CN 2665681Y
- Authority
- CN
- China
- Prior art keywords
- tuning fork
- fork
- loudspeaker
- circuit
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model relates to a tuning fork frequency measurement meter which changes the current contacting method in tuning fork frequency measurement. The meter realizes non-contact measurement by high sensitive horn receiving signals. The meter comprises a tuning fork, a signal collection and an output apparatus which is characterized in that the signal collection is a horn (1) which is communicated with the output apparatus by circuit; the output apparatus is a data output display screen (2). Compared with the present tuning fork measuring instrument, The utility model is reliable in performance, long in service life and low in experimental expense, the measuring method of which is unique and effective and is easy for students to comprehend and grasp the measuring principle.
Description
[technical field]
The utility model relates to a kind of teaching and experiment equipment, particularly a kind of fork frequency analyzer.
[background technology]
Domestic fork frequency measurement mechanism all adopts the contact method to measure at present, promptly is provided with inductor (usually to paste the form of sensing chip) on tuning fork, and inductor links to each other with processor by lead.During test, knock tuning fork, sensing chip is converted to electric signal with the vibrations of tuning fork, by lead signal conveys to processor is handled, and demonstrates the frequency of institute's acoustic fork then.When carrying out the fork frequency measurement with this device, need special-purpose tested tuning fork, tuning fork must be connected with lead with processor during experiment, therefore it is comparatively expensive and operation is very inconvenient to test the consumptive material expense, if be that sensing chip does not post or poor wire connection on the tuning fork, then can directly influence the measurement effect of experiment.
[utility model content]
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome the technological deficiency that existing product exists, and provides a kind of contactless, dependable performance, fork frequency analyzer simple to operate.
The utility model is taked following technical scheme: a kind of fork frequency analyzer, comprise tuning fork, signals collecting and output unit, it is characterized in that described signal pickup assembly is loudspeaker, loudspeaker are connected with output unit by circuit, and described output unit is the data output display screen.When using this setting to carry out the fork frequency measurement, tuning fork need not be connected with induction installation or contact, as long as the user is by the be subjected to range of sound of the tuning fork of beating near loudspeaker, loudspeaker are converted to electric signal with the vibrations of tuning fork, through oversampling circuit the amplification and the frequency division of signal are handled, and fork frequency is separated, form with data on display screen is exported, the user just can be according to data presented, and frequency and the measuring error of measuring tuning fork easily are less, is generally in ± 1Hz.
Circuit between described loudspeaker and the output display screen comprises signal and amplifies and the frequency division treatment circuit.This partial circuit adopts conventional signal processing circuit, its effect is that the tuning fork vibration signal that loudspeaker receive is amplified, handle by frequency division then, separate other impurity sound, with the frequency translation of institute's acoustic fork is digital signal, export by display screen, so as the user easily the numerical value from the display screen learn fork frequency.
Described signals collecting and output device are a box body structure, which is provided with the button that scalable output shows.The adjusting button is set makes the user change output unit, make it can adapt to different use occasions, reduced the volume size of analyzer simultaneously, make it to be convenient to carry and use according to the height of institute's acoustic fork frequency.
The utility model is compared with existing equipment has following advantage: adopt highly sensitive loudspeaker to carry out the reception of signal, realize measurement in non-contacting mode to fork frequency, not only convenience, dependable performance are measured in use, experimental expenses is lower and it is widely used, and it can measure the frequency of daily any sound source in theory; The experiment measuring precision is higher simultaneously, is convenient to student's correct understanding and grasps the principle that fork frequency is measured.
[description of drawings]
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is a structural representation of the present utility model.
Among the figure: 1, loudspeaker 2, display screen 3, control knob 4, box body
[embodiment]
Below in conjunction with theory diagram the utility model is further described:
As shown in the figure: the utility model comprises a common tuning fork, the box body 4 that separates with tuning fork, the box body top is provided with high-sensitive loudspeaker 1, circuit signal collection, amplification, processing, data storage display circuit in loudspeaker 1 and the box body 4 link to each other, and the box body side is provided with output display screen and the control knob that is connected with display circuit.When carrying out the tuning fork measurement, only need the tuning fork of beating is placed the range of sound that is subjected to of loudspeaker, high-sensitive loudspeaker receive the tuning fork vibration signal rapidly, be translated into electric signal, then through circuit in the box body to this electric signal amplify, frequency division and data processing, at last electric signal is converted into digital signal, by the frequency numerical value of display screen output institute acoustic fork.This measuring process is simple to operate and precision is higher, and usually error is in ± 1Hz.The utility model adopts highly sensitive loudspeaker to carry out the reception of signal, realize measurement in non-contacting mode to fork frequency, not only convenience, dependable performance are measured in use, the required expense of experiment is cheap and can effectively improve measuring accuracy, prolong the serviceable life of instrument, make things convenient for the student to understand and grasp experimental principle.
Claims (3)
1, a kind of fork frequency analyzer comprises tuning fork, signals collecting and output unit, it is characterized in that described signal pickup assembly is loudspeaker (1), and loudspeaker are connected with output unit by circuit, and described output unit is data output display screen (2).
2, fork frequency analyzer according to claim 1 is characterized in that the circuit between described loudspeaker and the output display screen comprises signal amplification and frequency division treatment circuit.
3, fork frequency analyzer according to claim 2 is characterized in that described signals collecting and output device are a box body (3) structure, which is provided with the control knob (4) that scalable output shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320108626 CN2665681Y (en) | 2003-12-02 | 2003-12-02 | Tuning fork frequency determinator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320108626 CN2665681Y (en) | 2003-12-02 | 2003-12-02 | Tuning fork frequency determinator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2665681Y true CN2665681Y (en) | 2004-12-22 |
Family
ID=34342776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320108626 Expired - Fee Related CN2665681Y (en) | 2003-12-02 | 2003-12-02 | Tuning fork frequency determinator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2665681Y (en) |
-
2003
- 2003-12-02 CN CN 200320108626 patent/CN2665681Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2906674Y (en) | Live high-pressure transmission line composite insulator tester with liquid crystal graph display | |
| CN209070006U (en) | A kind of current sensor | |
| CN2665681Y (en) | Tuning fork frequency determinator | |
| CN206609911U (en) | Current transformer on-line testing system based on new pincerlike Rogowski coil | |
| CN205384249U (en) | Ultrasonic transducer of size is pressed in control | |
| CN202710518U (en) | Watermelon ripeness detector | |
| CN201096843Y (en) | Detection device for measuring metal conductivity instrument based on backset phase | |
| CN215263720U (en) | Tester capable of measuring contact resistance and opening and closing time of high-voltage switch | |
| CN201780162U (en) | Multichannel noise signal acquisition device | |
| CN201828301U (en) | Liquid level detecting needle and liquid level detecting device | |
| CN101498751B (en) | Wrist wearing type digital electric field detection meter | |
| CN106645969A (en) | Portable semiconductor non-contact resistivity tester and use method thereof | |
| CN208506265U (en) | A kind of Handheld metal detector | |
| CN206489220U (en) | One kind is based on single-chip microcomputer microresistivity survey system | |
| CN202854215U (en) | Inductive test pencil based on six-inverter integrated circuit | |
| CN202330570U (en) | Detection device of electromagnetic field strength | |
| CN107843623A (en) | A kind of apple internal quality analyzer | |
| CN2777517Y (en) | Sensor on-line detector for outdoor large electronic weighing apparatus | |
| CN202793656U (en) | Non-contact piezomagnetic measurement apparatus | |
| CN103575949A (en) | High-accuracy handhold digital oscilloscope | |
| CN2600820Y (en) | Internal resistance of source measuring instrument | |
| CN219000308U (en) | Urine collector | |
| CN203101510U (en) | Portable frequency spectrum analyzer | |
| CN220602595U (en) | Intelligent spot inspection acquisition device | |
| CN217403362U (en) | Screw in-place detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |