CN205749554U - A kind of speed detector - Google Patents
A kind of speed detector Download PDFInfo
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- CN205749554U CN205749554U CN201620048206.6U CN201620048206U CN205749554U CN 205749554 U CN205749554 U CN 205749554U CN 201620048206 U CN201620048206 U CN 201620048206U CN 205749554 U CN205749554 U CN 205749554U
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Abstract
This utility model provides a kind of speed detector, a kind of speed probe drawing tach signal from ignition coil, belongs to electronic sensor field.This utility model is provided with controller and receives and process tach signal, it is possible to accurate, the rotating speed of stable detection machine runner.It is also provided with display for showing rotating speed, and powers for other components and parts while detection rotating speed, there is simple in construction, easy for installation, utilization rate advantages of higher.
Description
Technical field
This utility model belongs to electronic sensor field, particularly to a kind of speed detector.
Background technology
Electromotor, motor etc. have rotor, the machine of stator in use needs to monitor its rotating speed in real time, use the actual speed of the sensor such as Hall element, photoelectric sensor detection rotor in prior art more.Wherein the precision of Hall element is relatively low, easily produces the situation of detection mistake；The price of photoelectric sensor costly, and needs the calculation procedure writing complexity to calculate the rotating speed of reality.On the one hand, said two devices all has its fixing scope that tests the speed and the scope that tests the speed less, it is difficult to popularization and application is in motor；On the other hand, the sensor is higher to the requirement of environment, and needs to be arranged near rotor, and this needs machine to arrange mount point specifically for it.
Summary of the invention
In order to solve the problems referred to above, this utility model provides a kind of speed detector, has simple in construction, feature easy for installation, it is possible to accurate, the rotating speed of each machine rotors of stable detection.
To achieve these goals, the technical solution adopted in the utility model is: include signal lead-out wire and the controller drawn from ignition coil, described signal lead-out wire exports periodic square wave or sine wave in controller, and controller receives and processes, calculates rotating speed.
Further, described speed detector is provided with controller, and described speed detector is provided with display, and described speed detector is provided with display, and display is connected with controller and is controlled.Described display is used for showing current rotating speed.
Further, described speed detector is provided with rechargeable battery, and rechargeable battery is that display, controller are powered.Described rechargeable battery, can automatic charging when to have other power supplys be controller, monitor power supply；If during without other power supplys, power for display, controller etc..When runner rotates, rechargeable battery is charged by power outlet.
Further, described speed detector includes the power outlet powered for controller drawn from ignition coil.Power outlet output 5V DC voltage, powers for controller and other circuit.
Further, described controller, display and rechargeable battery are integrated on same panel.
Operation principle of the present utility model and having the beneficial effect that: (1), in order to be able to accurately detect out the rotating speed of runner, the mode that this utility model uses detection runner every revolution in real time to produce a signal of telecommunication determines runner actual speed.Part machine has carried lighter, and described lighter is provided with the magnetic pole interacted with runner, and runner every revolution just cuts the magnetic field on a magnetic pole, produces a signal of telecommunication on the ignition coil within lighter.A signal lead-out wire drawn from ignition coil by the Speed sensing device that this utility model provides, then inputted by the signal of signal lead-out wire to controller, controller carry out simple calculating process and draw the rotating speed of runner.
Owing to the rotating speed of runner is very fast, in a relatively short period of time, the low voltage signal that described signal lead-out wire provides is periodic square wave or sine wave, and its frequency is corresponding with runner rotating speed.After described controller receives this periodic low voltage signal, can immediately arrive at runner rotating speed according to its frequency, for the rotating speed that prompting operator is current, this utility model is provided with display, the rotating speed detected for display.
Common detection speed probe, such as Hall element and photoelectric sensor, need to install near runner, i.e. need to add installation speed probe on machine, there is certain error in the sensor detection rotating speed, and relatively costly, uses also inconvenient.And lighter only need to be changed by scheme that this utility model provides a little, from ignition coil, draw a bars lead-out wire, the detection to machine runner rotating speed can be realized, not only eliminate the sensor of extra setting, reduce making and maintenance cost, it is ensured that what machine ran stablizes.Further, tach signal is directed to the induction coil within lighter, it is ensured that the verity in tach signal source and reliability.
(2) this utility model is in order to improve the practicality of scheme, has separately drawn power outlet from ignition coil, and described power outlet includes that power and ground, described power line are that the electronic devices and components such as controller, display are powered.This power outlet can source same with signal lead-out wire, but need additionally through over commutation, filtering, pressure regulation/electronic circuit such as blood pressure lowering, voltage stabilizing process after obtain stable voltage source.This utility model achieves the dual use to signal lead-out wire, improves the utilization rate of components and parts, it also avoid secondary and changes, has simplified structure.
In brief, this utility model provides a kind of speed probe drawing tach signal from ignition coil, it is possible to accurately, the rotating speed of stable detection machine runner, has simple in construction, easy for installation, cheap, the advantages such as economic benefit is high.
Accompanying drawing explanation
Fig. 1 is a kind of speed detector embodiment one operation principle schematic diagram；
Fig. 2 is a kind of speed detector embodiment two operation principle schematic diagram.
Shown in figure: magnetic runner 1；Magnetic pole 2；Primary coil 3；Power supply processing circuit 4；Power outlet 5；Rechargeable battery 6；Display 7；Controller 8；Signal lead-out wire 9；Signal processing circuit 10；Secondary coil 11.
Detailed description of the invention
As it is shown in figure 1, the present embodiment includes primary coil 3, magnetic pole 2, magnetic runner 1, display 7, controller 8, power supply processing circuit 4, signal processing circuit 10 and with its both be connected respectively power outlet 5, signal lead-out wire 9.The exit of primary coil 3 is divided into power outlet 5, signal lead-out wire 9, signal lead-out wire 9 output to be connected to signal processing circuit 10 input, and power outlet 5 output is connected to power supply processing circuit 4.Signal processing circuit 10 output is connected to controller 8, and power supply processing circuit 4 is output as the power supply such as display 7, controller 8.
Wherein, primary coil 3, magnetic pole 2, magnetic runner 1 and power supply processing circuit 4, signal processing circuit 10 are arranged in the lighter at ignition coil place.Magnetic pole 2 coordinates installation with magnetic runner 1, it is provided with Magnet with magnetic pole 2 place of cooperation at magnetic runner 1, magnetic runner 1 does not turns over a circle, magnetic field produced by a Magnet magnetic pole 2 of cutting, and in the primary coil 3 of ignition coil, produce a signal of telecommunication, whereby perception detect the real-time rotating speed of current magnetic runner 1；From primary coil 3, draw two-way lead-in wire more respectively, two-way lead-in wire is respectively connecting to power supply processing circuit 4 and signal processing circuit 10；Draw again outside power outlet 5 and signal lead-out wire 9 to lighter from the outfan of power supply processing circuit 4 and signal processing circuit 10；Power outlet 5 is connected with controller 8, display 7, and signal lead-out wire 9 is connected with controller 8 input.
Power supply processing circuit 4 has the effect of rectification, filtering, pressure regulation and voltage stabilizing, the output DC source of the power outlet 5 of gained, and this supply voltage accurately and is stablized, powered with display 7 for controller 8；Signal processing circuit 10 has the effect of rectification, filtering, pressure regulation, makes the signal of signal lead-out wire 9 maintain on a low pressure range, it is to avoid to cause controller 8 to damage because voltage is excessive.The output signal of signal lead-out wire 9 is the most sinusoidal wave or square wave.
Rechargeable battery 6 is the most also charged by power outlet 5, rechargeable battery 6 supply controller 8 and display 7 power supply.
Fig. 2 show embodiment two, and the present embodiment differs only in enforcement one shown in Fig. 1: the signal source of described power outlet 5 is the secondary coil 11 in igniter fire coil.Drawing signal lead-out wire 9 output from primary coil 3 and be connected to controller 8, when producing a signal of telecommunication in primary coil 3, in secondary coil 11, sensing produces a signal of telecommunication too.Secondary coil 11 is high-tension coil, and the output signal voltage of the power outlet 5 drawn from which is higher, and need to be connected to power supply processing circuit 4 could be that controller 8, display 7 are powered after blood pressure lowering processes, and otherwise controller 8 will be burned.
Claims (6)
1. a speed detector, it is characterised in that: including signal lead-out wire and the controller drawn from ignition coil, described signal lead-out wire exports periodic square wave or sine wave in controller, and controller receives and processes, calculates rotating speed.
A kind of speed detector the most according to claim 1, it is characterised in that: described speed detector is provided with display, and display is connected with controller and is controlled.
A kind of speed detector the most according to claim 2, it is characterised in that: described speed detector is provided with rechargeable battery, and rechargeable battery is that display, controller are powered.
A kind of speed detector the most according to claim 1, it is characterised in that: the output signal of described signal lead-out wire is low-voltage signal.
A kind of speed detector the most according to claim 1, it is characterised in that: described speed detector include drawing from ignition coil for controller, the power outlet of monitor power supply.
A kind of speed detector the most according to claim 3, it is characterised in that: described controller, display and rechargeable battery are integrated on same panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620048206.6U CN205749554U (en) | 2016-01-19 | 2016-01-19 | A kind of speed detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620048206.6U CN205749554U (en) | 2016-01-19 | 2016-01-19 | A kind of speed detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205749554U true CN205749554U (en) | 2016-11-30 |
Family
ID=57387647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620048206.6U Active CN205749554U (en) | 2016-01-19 | 2016-01-19 | A kind of speed detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205749554U (en) |
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2016
- 2016-01-19 CN CN201620048206.6U patent/CN205749554U/en active Active
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |