CN208860970U - Acceleration of gravity measuring device based on array optical electric transducer - Google Patents
Acceleration of gravity measuring device based on array optical electric transducer Download PDFInfo
- Publication number
- CN208860970U CN208860970U CN201821834526.XU CN201821834526U CN208860970U CN 208860970 U CN208860970 U CN 208860970U CN 201821834526 U CN201821834526 U CN 201821834526U CN 208860970 U CN208860970 U CN 208860970U
- Authority
- CN
- China
- Prior art keywords
- electric transducer
- optical electric
- array optical
- photoemission
- acceleration
- 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
Abstract
The utility model discloses a kind of acceleration of gravity measuring device based on array optical electric transducer, comprising: experiment tubing string, experiment tubing string are placed vertically, so that detectable substance from top to bottom makees the movement of falling object in experiment tubing string；It is set at the different height of experiment tubing string and is separated by the first array optical electric transducer and second array formula photoelectric sensor of pre-determined distance, wherein, each array optical electric transducer includes that multiple photoemission arranged along the vertical direction are received to pipe, and each photoemission reception generates detection signal to pipe when detectable substance is fallen at corresponding height；Processing circuit, processing circuit is connected with the first array optical electric transducer and second array formula photoelectric sensor respectively, and processing circuit receives the fall time of detection signal acquisition detectable substance that at least one photoemission reception in the detection signal and second array formula photoelectric sensor that generate to pipe generates pipe in pre-determined distance according at least one photoemission in the first array optical electric transducer.
Description
Technical field
The utility model relates to experimental instrument technology, in particular to a kind of gravity based on array optical electric transducer
Acceleration measurement device.
Background technique
The measurement acceleration of gravity experiment of freely falling body method is currently one of the infrastest of undergraduate education physics subject, is had become
For essential part in Present College Physical Experiment.It is the detection freely falling body gravity that fallen by object freely falling body method
The size of acceleration g occupys an important position in the teaching and scientific research of College Physics subject at present.
Lead to since the calculating of gravity acceleration g needs to measure one section of spacing of object fall for the vertical range and object of s
It crosses the time interval t in this spacing, then the size of gravity acceleration g when acquiring object fall by poor method is passed through by experimenter.
The measurement of gap length s at present is more accurate, and the measurement of time interval t leads to its measurement knot since measurement method is limited
Fruit deviation is larger.
Most of Free Falling Object And Acceleration of Gravity measuring instrument using cylinder unit and is set to currently on the market
Photoelectric door on cylinder, photoelectric door are made of a small spot light lamp bulb and a photosensitive tube, the infrared laser warp of light bulb transmitting
It crosses cylinder center to be received across transparent cylinder by photosensitive tube, induction time set carries out time counting.But in an experiment first
It needs to take much time and the descent path position of steel ball is adjusted, steel ball drop point vertical lower is made just to correspond to photoelectric door hair
Received opticpath is penetrated, to make opticpath of the steel ball drop by way of photoelectric door, reaches the triggering of photoelectric door, and then play
Triggering starts and stops the purpose of timing respectively, but this needs a large amount of Preparatory work of experiment work.Simultaneously during steel ball drop under
It falls track and often deviates the received opticpath of photoelectric door transmitting, and then cause to tend not to be detected during steel ball drop
It arrives, causes the missing of time t experimental data in experiment with falling objects, and then lead to the failure of experiment.Therefore, current experiment dress
It needs the plenty of time to carry out experiment adjusting before setting experiment, often is caused to count by photoelectric door missing inspection because of whereabouts steel ball again in experimentation
When failure, there are the disadvantages such as Preparatory work of experiment overlong time, experiment success rate be low for current experimental provision.
Utility model content
The utility model is intended to solve one of the technical problem in above-mentioned technology at least to a certain extent.For this purpose, this reality
It is to propose a kind of acceleration of gravity measuring device based on array optical electric transducer with novel purpose, can be improved gravity
The success rate of acceleration analysis experiment, and a large amount of Preparatory work of experiment time can be saved, so that experimentation is more efficient.
In order to achieve the above objectives, the utility model proposes a kind of, and the acceleration of gravity based on array optical electric transducer is surveyed
Measure device, comprising: experiment tubing string, the experiment tubing string places vertically, for detectable substance in the experiment tubing string from top to bottom
Make the movement of falling object；It is set at the different height of the experiment tubing string and is separated by the first array optical fax of pre-determined distance
Sensor and second array formula photoelectric sensor, wherein each array optical electric transducer includes multiple arranging along the vertical direction
Photoemission receive to pipe, each photoemission is received to pipe generation when the detectable substance is fallen at corresponding height
Detect signal；Processing circuit, the processing circuit respectively with the first array optical electric transducer and the second array formula
Photoelectric sensor is connected, and the processing circuit is received according at least one photoemission in the first array optical electric transducer
The reception of at least one photoemission generates pipe in the detection signal and the second array formula photoelectric sensor generated to pipe
Detect signal acquisition described in fall time of the detectable substance in the pre-determined distance, so as to according to the pre-determined distance and it is described under
Fall time calculating acceleration of gravity.
Acceleration of gravity measuring device according to the present utility model based on array optical electric transducer, by being set to reality
It tests at the different height of tubing string and is separated by two array optical electric transducers of pre-determined distance to judge that detectable substance is fallen to respectively
At respective heights, each array optical electric transducer includes that multiple photoemission arranged along the vertical direction are received to pipe, as a result,
A possibility that effectively detectable substance capable of being avoided to be missed, improves the success rate of acceleration of gravity measurement experiment, and real in measurement
Without the accurate descent path for adjusting detectable substance before testing, a large amount of Preparatory work of experiment time is also saved, so that experimentation is more
Efficiently.
In addition, the acceleration of gravity measuring device according to the present utility model based on array optical electric transducer can also have
There is following additional technical characteristic:
Each photoemission reception includes the light emitting diode and photodiode being set at sustained height to pipe.
The detectable substance is spherical, and adjacent photoemission receives small to the spacing of pipe in each array optical electric transducer
In the diameter for being equal to the detectable substance.
The processing circuit includes: that the multichannel photoemission of corresponding each array optical electric transducer setting receives triggering control
Circuit processed receives output end of the trigger control circuit with the reception of a corresponding photoemission to pipe per the photoemission all the way
It is connected, the multichannel photoemission receives trigger control circuit and received according to photoemission in corresponding array optical electric transducer
Trigger signal is generated to the detection signal that pipe generates；The logic control circuit of corresponding each array optical electric transducer setting, institute
It states logic control circuit to be connected with multichannel photoemission reception trigger control circuit, the logic control circuit is according to
Trigger signal generates triggering timing signal；Single-chip microcontroller, the single-chip microcontroller are connected with the logic control circuit, the single-chip microcontroller point
It is not opened according to the first array optical electric transducer and the corresponding triggering timing signal of the second array formula photoelectric sensor
Dynamic timing and stopping timing, to obtain fall time of the detectable substance in the pre-determined distance.
Receiving trigger control circuit per the photoemission all the way includes operational amplifier, the operational amplifier it is just defeated
Enter end and be connected to corresponding photoemission reception to the output end of pipe, the negative input end of the operational amplifier is connected to reference to electricity
Pressure side, the output end that the output end of the operational amplifier receives trigger control circuit as the road photoemission export the touching
It signals, wherein the reference voltage that the reference voltage end provides is adjustable.
The logic control circuit include multiple NOT gates and one or, the input terminal of each NOT gate is connected to correspondence
The photoemission described all the way receive trigger control circuit output end, the output end of each NOT gate with it is described or door defeated
Enter end to be connected, described or door output end is connected to export the triggering timing signal to the single-chip microcontroller with the single-chip microcontroller.
The adsorption piece for adsorbing the fixed detectable substance is provided at the top of the experiment tubing string, the experiment tubing string
Bottom is provided with for accepting the detectable substance mesh bag to fall.
The acceleration of gravity measuring device based on array optical electric transducer further includes being connected with the adsorption piece
Absorption switch.
The side wall of the experiment tubing string indicates graduation mark, in order to which the pre-determined distance is arranged.
The acceleration of gravity measuring device based on array optical electric transducer further includes being used to support the experiment
The screw of height of the pedestal, setting of tubing string on the base and for adjusting the pedestal and setting are on the base
And the level meter of the verticality for demarcating the experiment tubing string.
Detailed description of the invention
Fig. 1 is the structure of the acceleration of gravity measuring device based on array optical electric transducer of the utility model embodiment
Schematic diagram；
Fig. 2 is the structural schematic diagram of the array optical electric transducer of the utility model one embodiment；
Fig. 3 is the block diagram of the processing module of the utility model one embodiment；
Fig. 4 is that the photoemission of the utility model one embodiment receives the schematic diagram of trigger control circuit；
Fig. 5 is the schematic diagram of the logic control circuit of the utility model one embodiment；
Fig. 6 is the acceleration of gravity measuring device based on array optical electric transducer of the utility model one embodiment
Structural schematic diagram.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
As shown in Figure 1, the acceleration of gravity measuring device based on array optical electric transducer of the utility model embodiment,
Including experiment tubing string 1, the first array optical electric transducer for being set at the different height of experiment tubing string 1 and being separated by pre-determined distance
2 and second array formula photoelectric sensor 3, processing circuit 4.Wherein, experiment tubing string 1 is placed vertically, so that detectable substance 5 is in experiment tube
From top to bottom make the movement of falling object in column 1.As shown in Fig. 2, each array optical electric transducer includes multiple along vertical side
It receives to the photoemission of arrangement to pipe (in Fig. 2 for 6), each photoemission reception falls to phase in detectable substance to pipe
Detection signal is generated when should highly locate.Processing circuit 4 respectively with the first array optical electric transducer 2 and second array formula photoelectric transfer
Sensor 3 is connected, and processing circuit 4 can be received according at least one photoemission in the first array optical electric transducer 2 and be generated to pipe
Detection signal and second array formula photoelectric sensor 3 at least one photoemission receive the detection signal acquisition that generates to pipe
Fall time of the detectable substance 5 in pre-determined distance, to calculate acceleration of gravity according to pre-determined distance and fall time.
In one embodiment of the utility model, as shown in Fig. 2, it includes being set to together that each photoemission, which is received to pipe,
Light emitting diode and photodiode at one height.In one embodiment of the utility model, detectable substance 5 is spherical shape, often
Adjacent photoemission receives the diameter R for being less than or equal to detectable substance 5 to the spacing d of pipe in a array optical electric transducer.As a result,
It can guarantee that at least photoemission reception is blocked to pipe and generates detection signal all the way when detectable substance 5 falls.Photoelectricity hair
The spacing of pipe can be determined according to the size of experiment tubing string by penetrating to receive to receive quantity and the adjacent photo transmitting of pipe.Wherein, phase
Adjacent photoemission, which is received, is much smaller than above-mentioned pre-determined distance to the spacing of pipe, such as above-mentioned pre-determined distance can be 10cm or more, adjacent
Photoemission reception can be grade to the spacing of pipe.This prevents detection is generated in the first array optical electric transducer 2
The photoemission of signal, which receives, receives to pipe the photoemission that detection signal is generated in pipe and second array formula photoelectric sensor 3
The distance between and the pre-determined distance deviation to calculate acceleration of gravity it is too big, to guarantee that the detection of acceleration of gravity is accurate
Degree.
In one embodiment of the utility model, as shown in figure 3, processing circuit 4 includes corresponding each array photoelectricity
The multichannel photoemission of sensor setting receives the logic of trigger control circuit 41, corresponding each array optical electric transducer setting
Control circuit 42 and single-chip microcontroller 43.Wherein, trigger control circuit 41 is received per photoemission all the way to send out with a corresponding photoelectricity
It penetrates to receive and be connected to the output end of pipe, multichannel photoemission receives trigger control circuit 41 can be according to corresponding array optical fax
Photoemission, which is received, in sensor generates trigger signal to the detection signal that pipe generates；Logic control circuit 42 and multichannel photoemission
It receives trigger control circuit 41 to be connected, logic control circuit 42 can generate triggering timing signal according to trigger signal；Single-chip microcontroller 43
It is connected with logic control circuit 42, single-chip microcontroller 43 can be respectively according to the first array optical electric transducer 2 and second array formula photoelectricity
The corresponding triggering timing signal enabling timing of sensor 3 and stopping timing, when obtaining whereabouts of the detectable substance 5 in pre-determined distance
Between.
In one embodiment of the utility model, as shown in figure 4, receiving trigger control circuit 41 per photoemission all the way
Including operational amplifier, the positive input terminal of operational amplifier is connected to output end of the corresponding photoemission reception to pipe, operation
The negative input end of amplifier is connected to reference voltage end, and the output end of operational amplifier receives triggering control as the road photoemission
The output end OUT of circuit 41 processed exports trigger signal, wherein the reference voltage that reference voltage end provides is adjustable.Further, such as
Shown in Fig. 4, photoemission, which is received, connects the anode that pipe includes light emitting diode DS1 and photodiode D1, DS1 by resistance R1
It is connected to+5V power supply, minus earth, the cathode of D1 is connected to+5V power supply by resistance R2, and anode is grounded by resistance R3.Operation
Amplifier Model can be LM324AD, and positive input terminal is connected to the cathode of D1, negative input end and is connected to+5V electricity by resistance R19
Source is simultaneously grounded by slide rheostat R25.By the ginseng for adjusting the adjustable operational amplifier negative input end of slide rheostat R25
Examine voltage.
In one embodiment of the utility model, as shown in figure 5, logic control circuit 42 includes multiple NOT gates and one
Or door, the input terminal of each NOT gate are connected to corresponding photoemission all the way and receive the output end of trigger control circuit (Fig. 5 is shown
6 road output end OUT1~OUT6), the output end of each NOT gate with or the input terminal of door be connected or the output end Y and single-chip microcontroller of door
43 are connected to export triggering timing signal to single-chip microcontroller 43.
Trigger control circuit 41 and logic control circuit 42 are received by above-mentioned photoemission, when light emitting diode and reception
When not being blocked between diode, reception diode conducting, for operational amplifier as comparator, positive input terminal is high electricity
It is flat, it is high level by comparing voltage output, all photoemission receptions corresponding photoelectricity hair when not being blocked to the optical path of pipe
It penetrates reception trigger control circuit 41 and all exports high level.When the detectable substance 5 to be fallen between light emitting diode and reception diode
When blocking, reception diode does not receive optical signal and by causing the voltage drop of operational amplifier positive input terminal to pass through as low as 0
Compare, leading to op-amp output voltage is low level, and it is exactly that detectable substance 5 falls that high level, which is converted to low level failing edge,
The trigger signal generated when to array optical electric transducer.First pass through NOT gate per touching signal all the way and negate, then pass through or door into
Row multichannel phase and form be combined, any trigger signal all the way be failing edge signal when or door output triggering timing letter
Number become high level for rising edge.Respectively correspond the first array optical electric transducer 2 and second array formula for being separated by pre-determined distance
Photoemission reception in photoelectric sensor 3 successively triggers single-chip microcontroller timing to the triggering timing signal that pipe generates, and reaches timing
Purpose.
In addition, the periphery of single-chip microcontroller 43 may also be configured with keyboard, display and voice announcer.What keyboard can be tested
Setting, display and voice announcer can be respectively used to show and broadcast experimental result.
Further, as shown in fig. 6, the top of experiment tubing string 1 is provided with the adsorption piece for adsorbing fixed test object 5
6, experiment tubing string 1 bottom be provided with for accepts fall 5 mesh bag 7 of detectable substance, mesh bag 7 can be used for falling detectable substance 5 delay
Punching avoids detectable substance 5 from damaging other devices of bottom since impact force is big when falling.
Further, as shown in fig. 6, the acceleration of gravity based on array optical electric transducer of the utility model embodiment
Measuring device may also include the absorption switch 8 being connected with adsorption piece 6, by adsorbing the opening and closing of switch 8, can correspond to control
Adsorption piece 6 adsorbs detectable substance 5 and release detectable substance 5.
Further, as shown in fig. 6, the side wall of experiment tubing string 1 indicates graduation mark 9, in order to be arranged it is above-mentioned it is default away from
From.In a specific embodiment of the utility model, the minimum division value of graduation mark 9 is 0.01mm.
Further, as shown in fig. 6, the acceleration of gravity based on array optical electric transducer of the utility model embodiment
Measuring device may also include the height for being used to support the pedestal 10 of experiment tubing string 1, being arranged on pedestal 10 and being used for adjustment base 10
The screw 11 of degree and the level meter 12 that the verticality on pedestal 10 and for calibration experiment tubing string 1 is set.
Further, as shown in fig. 6, the acceleration of gravity based on array optical electric transducer of the utility model embodiment
Measuring device may also include the vacuum pumping pump 13 for being vacuumized to experiment tubing string 1, to be entire experiment with falling objects
Create vacuum environment.
Further, as shown in fig. 6, the acceleration of gravity based on array optical electric transducer of the utility model embodiment
Measuring device may also include power supply 14, and power supply 14 can be powered the electrical appliance in whole device.
In a specific embodiment of the utility model, experiment tubing string 1 is glass tube, and detectable substance 5 is steel ball, adsorption piece
6 be electromagnetic adsorption part, adsorbs switch 8 as electromagnetic adsorption switch, C8051F300 chip can be used in single-chip microcontroller 43.
In conclusion the acceleration of gravity based on array optical electric transducer according to the utility model embodiment measures dress
It sets, at the different height by being set to experiment tubing string and is separated by two array optical electric transducers of pre-determined distance to judge to examine
It surveys object to fall at respective heights respectively, each array optical electric transducer includes multiple photoemission arranged along the vertical direction
It receives to pipe, thereby, it is possible to effectively detectable substance be avoided to be missed, improves the success of acceleration of gravity measurement experiment
Rate, and also save a large amount of Preparatory work of experiment time without the accurate descent path for adjusting detectable substance before measurement experiment, make
It is more efficient to obtain experimentation.
The meaning of " plurality " is two or more in the description of the present invention, unless otherwise clearly specific
It limits.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (10)
1. a kind of acceleration of gravity measuring device based on array optical electric transducer characterized by comprising
Tubing string is tested, the experiment tubing string is placed vertically, so that detectable substance is from top to bottom made freely to fall in the experiment tubing string
Body movement；
It is set at the different height of the experiment tubing string and is separated by the first array optical electric transducer and second of pre-determined distance
Array optical electric transducer, wherein each array optical electric transducer includes multiple photoemission arranged along the vertical direction
It receives to pipe, each photoemission reception generates detection signal to pipe when the detectable substance is fallen at corresponding height；
Processing circuit, the processing circuit respectively with the first array optical electric transducer and the second array formula photoelectric transfer
Sensor is connected, and the processing circuit is received according at least one photoemission in the first array optical electric transducer to Guan Sheng
At detection signal and the second array formula photoelectric sensor at least one photoemission receive the detection letter generated to pipe
Number the fall time of the detectable substance in the pre-determined distance is obtained, so as to according to the pre-determined distance and the fall time
Calculate acceleration of gravity.
2. the acceleration of gravity measuring device according to claim 1 based on array optical electric transducer, which is characterized in that
Each photoemission reception includes the light emitting diode and photodiode being set at sustained height to pipe.
3. the acceleration of gravity measuring device according to claim 1 based on array optical electric transducer, which is characterized in that
The detectable substance is spherical, and adjacent photoemission is received to the spacing of pipe less than or equal to institute in each array optical electric transducer
State the diameter of detectable substance.
4. the acceleration of gravity measuring device according to claim 1 based on array optical electric transducer, which is characterized in that
The processing circuit includes:
The multichannel photoemission of corresponding each array optical electric transducer setting receives trigger control circuit, per the photoelectricity described all the way
Transmitting, which receives trigger control circuit and receives with a corresponding photoemission, is connected to the output end of pipe, the multichannel photoemission
It receives trigger control circuit and receives the detection signal life generated to pipe according to photoemission in corresponding array optical electric transducer
At trigger signal；
The logic control circuit of corresponding each array optical electric transducer setting, the logic control circuit and the multichannel photoelectricity
Transmitting receives trigger control circuit and is connected, and the logic control circuit generates triggering timing signal according to the trigger signal；
Single-chip microcontroller, the single-chip microcontroller are connected with the logic control circuit, and the single-chip microcontroller is respectively according to first array
Photoelectric sensor and the corresponding triggering timing signal enabling timing of the second array formula photoelectric sensor and stopping timing, to obtain
Take fall time of the detectable substance in the pre-determined distance.
5. the acceleration of gravity measuring device according to claim 4 based on array optical electric transducer, which is characterized in that
Receiving trigger control circuit per the photoemission all the way includes operational amplifier, the positive input terminal connection of the operational amplifier
The output end to pipe is received to corresponding photoemission, the negative input end of the operational amplifier is connected to reference voltage end, institute
The output end that the output end for stating operational amplifier receives trigger control circuit as the road photoemission exports the trigger signal,
Wherein, the reference voltage that the reference voltage end provides is adjustable.
6. the acceleration of gravity measuring device according to claim 5 based on array optical electric transducer, which is characterized in that
The logic control circuit include multiple NOT gates and one or, the input terminal of each NOT gate is connected to corresponding institute all the way
State the output end that photoemission receives trigger control circuit, the output end of each NOT gate and described or door input terminal phase
Even, described or door output end is connected to export the triggering timing signal to the single-chip microcontroller with the single-chip microcontroller.
7. the acceleration of gravity measuring device according to claim 1 based on array optical electric transducer, which is characterized in that
The adsorption piece for adsorbing the fixed detectable substance, the bottom setting of the experiment tubing string are provided at the top of the experiment tubing string
Have for accepting the detectable substance mesh bag to fall.
8. the acceleration of gravity measuring device according to claim 7 based on array optical electric transducer, which is characterized in that
It further include the absorption switch being connected with the adsorption piece.
9. the acceleration of gravity measuring device according to claim 1 based on array optical electric transducer, which is characterized in that
The side wall of the experiment tubing string indicates graduation mark, in order to which the pre-determined distance is arranged.
10. the acceleration of gravity measuring device according to claim 1 based on array optical electric transducer, feature exist
In further including the pedestal for being used to support the experiment tubing string, setting on the base and for adjusting the height of the pedestal
Screw and setting on the base and for demarcate it is described experiment tubing string verticality level meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821834526.XU CN208860970U (en) | 2018-11-08 | 2018-11-08 | Acceleration of gravity measuring device based on array optical electric transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821834526.XU CN208860970U (en) | 2018-11-08 | 2018-11-08 | Acceleration of gravity measuring device based on array optical electric transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208860970U true CN208860970U (en) | 2019-05-14 |
Family
ID=66422050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821834526.XU Expired - Fee Related CN208860970U (en) | 2018-11-08 | 2018-11-08 | Acceleration of gravity measuring device based on array optical electric transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208860970U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970653A (en) * | 2021-10-21 | 2022-01-25 | 陕西鼎泰光宇科技有限公司 | Novel laser sensing simulation speed measurement method, system, equipment and terminal |
-
2018
- 2018-11-08 CN CN201821834526.XU patent/CN208860970U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970653A (en) * | 2021-10-21 | 2022-01-25 | 陕西鼎泰光宇科技有限公司 | Novel laser sensing simulation speed measurement method, system, equipment and terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208860970U (en) | Acceleration of gravity measuring device based on array optical electric transducer | |
| CN109343137B (en) | Free falling body gravity acceleration measuring device based on capacitance sensor | |
| CN203164406U (en) | GTEM chamber based ultrahigh frequency sensor sensitivity testing device | |
| CN101886912B (en) | Electronic altitude touch machine | |
| CN201463837U (en) | Touch lever type electronic altitude touch machine | |
| CN109061759B (en) | Gravity acceleration measuring instrument based on free falling body method | |
| CN201408324Y (en) | Camera shutter test instrument | |
| CN205103129U (en) | Novel particulate matter sensor | |
| CN201540089U (en) | Electronic altitude touch machine | |
| CN205460820U (en) | Table tennis table bounce tester | |
| CN213482473U (en) | Device for measuring gravity acceleration | |
| CN207202863U (en) | A kind of sensor-based human body pulse frequency detection device | |
| CN201859857U (en) | Silicon wafer level image sensor test device adopting a LED backlight board and a parallel light barrel | |
| CN105126292A (en) | Laser reception principle based electronic height instrument | |
| CN208799735U (en) | A kind of basketball training device | |
| CN110322761B (en) | Multifunctional instrument device for college physical experiment | |
| CN202453517U (en) | Gravity acceleration gauge | |
| CN105344615A (en) | Detecting device for bearing ring | |
| CN109031388A (en) | Radon consistence absolute measuring system and method in a kind of water | |
| CN201463827U (en) | Intelligent electronic altitude touch machine | |
| JP3682744B2 (en) | Echo chip type hardness tester | |
| CN111240183B (en) | Testing device for satellite synchronous clock | |
| CN209215098U (en) | A kind of mechanical load of photovoltaic module deformation measuring device | |
| CN102511972A (en) | Foot size measurer | |
| CN206804683U (en) | One kind is based on laser induced impact tachymeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190514 Termination date: 20201108 |