CN205594069U - Time measuring apparatu frequently - Google Patents
Time measuring apparatu frequently Download PDFInfo
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- CN205594069U CN205594069U CN201620416724.9U CN201620416724U CN205594069U CN 205594069 U CN205594069 U CN 205594069U CN 201620416724 U CN201620416724 U CN 201620416724U CN 205594069 U CN205594069 U CN 205594069U
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- frequency
- pin
- time
- shaping circuit
- processor
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Abstract
The utility model discloses a time measuring apparatu frequently, include treater, data latch ware, decoding display, functional select switch, frequency signal input, time signal input, frequency shaping circuit, time shaping circuit, frequency dividing circuit and key in the end, wherein: the frequency signal input is connected with frequency shaping circuit, the time signal input is connected with time shaping circuit, functional select switch and frequency shaping circuit are connected, functional select switch and time shaping circuit are connected, functional select switch is connected with the treater, the treater is connected with the data latch ware, the data latch ware is connected with the decoding display, the treater is connected with frequency dividing circuit, it is connected with the treater to key in the end. The utility model discloses a time measuring apparatu frequently simple structure, easy to maintain.
Description
Technical field
This utility model relates to a kind of measurement equipment, more particularly, to a kind of time and frequency measurement instrument.
Background technology
In recent years, phase coincidence point detection technique and the various high-precision side of cyclical signal parameter measurement
Method is widely applied at home.
In prior art, conventional measuring method has frequency method and periodic method, due to the existence of error,
For improving accuracy of measurement, the frequency of high-frequency signal is suitable for using frequency to send out measurement, and low frequency signal
Frequency is suitable for measuring by periodic method, and the low frequency signal measuring circuit of prior art and apparatus structure are complicated,
Not easy care, it is therefore desirable to a kind of new measuring instrument structure so that measuring instrument more easy care.
Utility model content
A purpose of the present utility model is to solve time and frequency measurement instrument not easy care of the prior art
Defect.
According to first aspect of the present utility model, it is provided that a kind of time and frequency measurement instrument, including processor,
Data latches, decoding monitor, functional select switch, frequency signal input end, time signal are defeated
Enter end, frequency shaping circuit, temporal shaping circuit, frequency dividing circuit and key-press input end, wherein:
Described frequency signal input end is connected with the input pin of described frequency shaping circuit；Described time signal
Input is connected with the input pin of described temporal shaping circuit；The shaping of described functional select switch is defeated
Enter pin to be connected with the shaping output pin of described frequency shaping circuit；Described functional select switch whole
Shape input pin is connected with the shaping output pin of described temporal shaping circuit；Described functional select switch
Fuction output pin be connected with the function input pin of processor；The data output of described processor is drawn
Foot is connected with the data-out pin of described data latches；The latch output of described data latches is drawn
Foot is connected with the display input pin of described decoding monitor；The frequency dividing data pin of described processor with
The frequency dividing data pin of described frequency dividing circuit connects；The button output pin of described key-press input end and institute
The key-press input pin stating processor connects.
Preferably, described processor is 8751 single-chip microcomputers.
Preferably, described data latches is 74LS374 latch.
Preferably, described decoding monitor includes 74LS247 element, 74LS06 element and charactron.
Preferably, described frequency dividing circuit includes the crystal for providing clock.
One of the present utility model has the technical effect that, by carrying out modular design and less unit device
Part so that time and frequency measurement instrument simple in construction, more to safeguard.
By detailed description to exemplary embodiment of the present utility model referring to the drawings, this practicality
Novel further feature and advantage thereof will be made apparent from.
Accompanying drawing explanation
Combined in the description and the accompanying drawing of the part that constitutes description shows this utility model
Embodiment, and be used for explaining principle of the present utility model together with its explanation.
Fig. 1 is the frame principle figure of time and frequency measurement instrument of the present utility model.
Fig. 2 is frequency shaping circuit and the schematic diagram of temporal shaping circuit of this utility model embodiment.
Fig. 3 is the circuit theory diagrams of the functional select switch of this utility model embodiment.
Fig. 4 is the circuit theory diagrams of the frequency dividing circuit of this utility model embodiment.
Fig. 5 is the circuit theory diagrams of the processor of this utility model embodiment.
Detailed description of the invention
Various exemplary embodiment of the present utility model is described in detail now with reference to accompanying drawing.It should be noted that
Arrive: unless specifically stated otherwise, the relative cloth of the parts illustrated the most in these embodiments and step
Put, numerical expression and numerical value are not intended to scope of the present utility model.
Description only actually at least one exemplary embodiment is illustrative below, never makees
For to this utility model and application thereof or any restriction of use.
May not beg in detail for technology, method and apparatus known to person of ordinary skill in the relevant
Opinion, but in the appropriate case, described technology, method and apparatus should be considered a part for description.
Shown here with in all examples discussed, any occurrence should be construed as merely example
Property rather than as limit.Therefore, other example of exemplary embodiment can have different
Value.
It should also be noted that similar label and letter represent similar terms, therefore, one in following accompanying drawing
A certain Xiang Yi the accompanying drawing of denier is defined, then need not it is carried out further in accompanying drawing subsequently
Discuss.
Time and frequency measurement instrument of the present utility model can be integrated in the circuit structure on circuit board, it is also possible to
Form a kind of portable equipment, it is simple to actual measurement.
Fig. 1 shows the frame principle figure of time and frequency measurement instrument of the present utility model.
As it is shown in figure 1, time and frequency measurement instrument includes processor 10, data latches 21, decoding monitor
22, functional select switch 31, frequency signal input end 34, time signal input 35, frequency are whole
Shape circuit 32, temporal shaping circuit 33, frequency dividing circuit 40 and key-press input end 50.
Wherein, described frequency signal input end 34 connects with the input pin of described frequency shaping circuit 32
Connect；Described time signal input 35 is connected with the input pin of described temporal shaping circuit 33；Institute
The shaping of the shaping input pin and described frequency shaping circuit 32 of stating functional select switch 31 exports draws
Foot connects；The shaping input pin of described functional select switch 31 and described temporal shaping circuit 33
Shaping output pin connects；The fuction output pin of described functional select switch 31 and processor 10
Function input pin connects；The data output pins of described processor 10 and described data latches 21
Data-out pin connect；The latch output pin of described data latches 21 and described coding display
The display input pin of device 22 connects；The frequency dividing data pin of described processor 10 and described frequency dividing electricity
The frequency dividing data pin on road 40 connects；The button output pin of described key-press input end 50 and described place
The key-press input pin of reason device 10 connects.
Data latches can be 74LS374 latch, decoding monitor can include 74LS247,
74LS06 and charactron.Frequency dividing circuit can include the crystal for providing clock.
Key-press input end 50 can provide the user input function, such as input and select any frequency dividing merit
Energy.Frequency signal input end 34 and time signal input 35 are as the entrance of signal detection.Receive
Frequency shaping circuit 32 and temporal shaping circuit 33, then access function is respectively enterd after signal
Selecting switch 31, the fuction output selected according to user is in processor 10.Frequency dividing circuit 40 is place
Reason device 10 provides accurate clock signal.After processor 10 receives reshaping signal, data are latched
In data latches 21, can deliver to data as required decoding monitor 22 is carried out afterwards
Display.
So, just time and frequency measurement instrument be divide into the mutually coordinated work of several modules, if certain module
Break down, can individually safeguard, greatly reduce the difficulty of maintenance.
Fig. 2 shows the frequency shaping circuit of this utility model embodiment and the former of temporal shaping circuit
Reason figure.
As in figure 2 it is shown, frequency signal is by after frequency signal input end J1, through resistance R11, R12
Dividing potential drop effect and the rectified action of diode D1, D2 enter in comparator U10A and compare,
Dividing potential drop effect through resistance R2, R8 is triggered the effect arrival Schmidt trigger U4A of device U3A again,
Eventually pass trigger U3D and be connected to control signal PLC.Time signal passes through time signal input
J2, the dividing potential drop effect through resistance R3 and R4 enters trigger U3B, then integrates with signal JSC
After be connected to control signal QATE through trigger U3C.
Fig. 3 shows the circuit theory diagrams of the functional select switch of this utility model embodiment.
As it is shown on figure 3, switch K1 is connected to control signal FV through the dividing potential drop effect of R5；Switch K2
Dividing potential drop effect through R6 is connected to control signal PL；Switch K3 is through the dividing potential drop effect of resistance R7
It is connected to control signal JS.
So, just having provided the user three kinds of outputs and selected, selected signal can pass through coding display
Device shows.More switch can also be increased as required more selection is provided.
Fig. 4 shows the circuit theory diagrams of the frequency dividing circuit of this utility model embodiment.
As shown in Figure 4, crystal ZT1 vibration produce frequency signal, U6B, U6A, U5B, U5A, U6C,
Base selection part when U7A constitutes, the time base of output is controlled by 4USC and 4MSC, its output action
Counting input end in processor.
Fig. 5 shows the circuit theory diagrams of the processor of this utility model embodiment.
As it is shown in figure 5, processor can be 8751 single-chip microcomputers, its pin P10 to P13 is respectively with front
Control signal 4USC, 4MSC, PLC, JSC of stating are corresponding.Interrupt signal INT1, INT0 are with front
Control signal QATE stated is corresponding with JS.T1 pin is corresponding with control signal FS.Processor also may be used
To be connected with key-press input end, the part that not shown in figure, processor is connected with key-press input end.So
It is achieved that the work being carried out detection and input and output by the whole measuring instrument of Single-chip Controlling.
Although specific embodiments more of the present utility model being described in detail by example,
But it should be appreciated by those skilled in the art, example above is merely to illustrate rather than be
Restriction scope of the present utility model.It should be appreciated by those skilled in the art, can be without departing from this reality
In the case of novel scope and spirit, above example is modified.Model of the present utility model
Enclose and be defined by the following claims.
Claims (5)
1. a time and frequency measurement instrument, it is characterised in that include that processor, data latches, decoding show
Show device, functional select switch, frequency signal input end, time signal input, frequency shaping circuit,
Temporal shaping circuit, frequency dividing circuit and key-press input end, wherein:
Described frequency signal input end is connected with the input pin of described frequency shaping circuit；
Described time signal input is connected with the input pin of described temporal shaping circuit；
The shaping input pin of described functional select switch draws with the shaping output of described frequency shaping circuit
Foot connects；
The shaping input pin of described functional select switch draws with the shaping output of described temporal shaping circuit
Foot connects；
The fuction output pin of described functional select switch is connected with the function input pin of processor；
The data output pins of described processor is connected with the data-out pin of described data latches；
The display input pin latching output pin and described decoding monitor of described data latches is even
Connect；
The frequency dividing data pin of described processor is connected with the frequency dividing data pin of described frequency dividing circuit；
The button output pin of described key-press input end is connected with the key-press input pin of described processor.
Time and frequency measurement instrument the most according to claim 1, it is characterised in that described processor is
8751 single-chip microcomputers.
Time and frequency measurement instrument the most according to claim 1, it is characterised in that described data latches
For 74LS374 latch.
Time and frequency measurement instrument the most according to claim 1, it is characterised in that described decoding monitor
Including 74LS247 element, 74LS06 element and charactron.
5. the time and frequency measurement instrument described in claim 1, it is characterised in that described frequency dividing circuit includes using
In the crystal providing clock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620416724.9U CN205594069U (en) | 2016-05-09 | 2016-05-09 | Time measuring apparatu frequently |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620416724.9U CN205594069U (en) | 2016-05-09 | 2016-05-09 | Time measuring apparatu frequently |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205594069U true CN205594069U (en) | 2016-09-21 |
Family
ID=56930635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620416724.9U Expired - Fee Related CN205594069U (en) | 2016-05-09 | 2016-05-09 | Time measuring apparatu frequently |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205594069U (en) |
-
2016
- 2016-05-09 CN CN201620416724.9U patent/CN205594069U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zeng Liezhou Inventor before: Xia Liqin |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170527 Address after: 510220 Guangdong city of Guangzhou province Jiang Li Lu Jiang Li Haizhuqu District Street No. 9 Room 403 Patentee after: Guangzhou Universal Technology Co.,Ltd. Address before: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20170527 Address after: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: Yongxing South Road, Longwan District of Wenzhou city streets pool 325025 Zhejiang province No. 18 Lane 26 Patentee before: Xia Liqin |
|
| 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: 20160921 Termination date: 20180509 |