CN203117214U - Engine rotating speed signal simulation device based on Hall sensor - Google Patents
Engine rotating speed signal simulation device based on Hall sensor Download PDFInfo
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- CN203117214U CN203117214U CN 201220725289 CN201220725289U CN203117214U CN 203117214 U CN203117214 U CN 203117214U CN 201220725289 CN201220725289 CN 201220725289 CN 201220725289 U CN201220725289 U CN 201220725289U CN 203117214 U CN203117214 U CN 203117214U
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- speed signal
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- rotating speed
- simulation device
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Abstract
The utility model discloses an engine rotating speed signal simulation device based on a Hall sensor. The engine rotating speed signal simulation device based on the Hall sensor at least comprises a motor, wherein the motor is arranged above a support, one end of the motor is connected with a signal disc, a sensor is connected above the signal disc, and the sensor is further connection with a shaping circuit and an oscilloscope in order. The engine rotating speed signal simulation device employs a same speed detection principle as a practical diesel engine, so the engine rotating speed signal simulation device outputs a signal identical to that of the practical diesel engine; the engine rotating speed signal simulation device has advantages of simple structure, low cost and convenient maintenance.
Description
Technical field
The utility model belongs to the signal imitation technical field, is specifically related to a kind of engine rotational speed signal analogue means based on Hall element.
Background technology
Electronic controlled diesel is widely applied on motorbus and the lorry because of its high burning efficiency, owing to be becoming tight petroleum resources day, the research of being devoted to fuel-economizing and lifting electronic controlled diesel dynamic property never is interrupted.In the electronic controlled diesel, rotating speed is not only a simple working parameter of engine, and for control module computing and control provide rotating speed and top dead centre reference signal, is that correct time benchmark is sprayed in foundation and the control of other calculation of parameter of electronic control system.When engine electric-controlled unit ECU is developed; in order to control cost of development; usually can adopt pulsing circuit to come the simulated engine tach signal in the laboratory; there is some difference but with the engine rotational speed signal of reality; bury hidden danger for stability and reliability that engine electric-controlled unit carries out, become the major issue that faces in the practical application.
Summary of the invention
The utility model has been developed a kind of engine rotational speed signal analogue means based on Hall element.
To achieve these goals, the utility model adopts following technical scheme to be achieved:
A kind of engine rotational speed signal analogue means based on Hall element, at least comprise motor, above motor was arranged on support, an end of motor was connected with signal panels, the top of signal panels is connected with sensor, and sensor links to each other with oscillograph with shaping circuit more successively.
Other technologies of the present utility model are characterized as:
Described sensor is Hall element, and model is KHO-03DA.
Described motor is the YD801-4/2 threephase asynchronous machine.
Described shaping circuit adopts the circuit of finite gain low-pass filter.
Described oscillograph model is TDS1000B.
The utility model replaces engine with motor, adjust motor with some known speed operation, signal panels and motor are installed together, rotate with motor, be fixed on Hall element on the support perpendicular to tachometer disk, export the rectangular pulse signal of the different densities corresponding with rotating speed, after the filtering of low pass shaping circuit, be shown in the oscillograph.Because it is simple in structure, with low cost that the measuring principle that employing is identical with actual diesel engine, the signal that this engine rotational speed signal analogue means is exported with truly diesel engine is in full accord, have simultaneously, is convenient to advantages such as maintenance.
Description of drawings
Fig. 1 is general structure synoptic diagram of the present utility model.
Wherein each symbol is represented following implication respectively among the figure: 1, support, 2, motor, 3, signal panels, 4, sensor, 5, power supply, 6, shaping circuit, 7, oscillograph.
Fig. 2 is signal panels structural representation of the present utility model.
Below in conjunction with accompanying drawing and example content of the present utility model is described in further detail.
Embodiment
Referring to Fig. 1, engine rotational speed signal analogue means based on Hall element of the present utility model, at least comprise motor 2, above motor 2 is arranged on support 1, one end of motor 2 is connected with signal panels 3, the top of signal panels 3 is connected with sensor 4, and sensor 4 links to each other with oscillograph 7 with shaping circuit 6 more successively.
With reference to Fig. 2, signal panels 3 are formed by block plate self-control, have 6 teeth on the dish, one 40 ° wide tooth (as the injection timing reference signal) are wherein arranged, the narrow tooth of 5 20 ° of degree; Centering on disk center has the hole of 4 uniform (being separated by 90 °), and 2 big bore dias are 21mm, and 2 hole diameters are 10.6mm in addition, and disk center also has the center pit of a diameter 52mm.As special hole, these several holes are mainly used in the location at engine the wide tooth tooth limit macropore corresponding with the disk center line.Replace motor 2 with double-speed motor, signal panels 3 are installed together with motor 2, rotate with motor 3, sensor 4 is fixed on the support, perpendicular to tachometer disk, a permanent magnet is installed in the position relative with it, when tachometer disk rotated, Hall element 4 was just exported rectangular pulse signal, exported 6 pulses, the corresponding cylinder of each signal of working cycle of corresponding engine, 2 wide pulse signals wherein cooperate the top dead centre signal accurately to determine the position of top dead centre.
With reference to Fig. 3, Hall element 4 is made up of sensing element, aluminium block, magnet steel and wire harness, and model is KHO-03DA, and sensing element, aluminium block, magnet steel and wire harness are separately fixed on the support.
It is 8mm that sensing element approaches distance, and working power voltage is 4 ~ 24VDC, and load current is 20mA, and frequency of operation is 5kHz.Output type is NPN, and overall dimensions are M8 * 16mm.
The installation site of the complete simulated engine upper sensor of the installation of Hall element.Aluminium block, magnet steel and sensor are fitted together in advance, are fixed on the fixed support together after installing again.Magnet steel is riveted tightly on aluminium block, and is not loosening in order to guarantee on aluminium block, can smear some fluid sealants at magnet steel.Sensor 4 passes through two nut screwing clampings on aluminium block.Aluminium block then is fixed on the fixed support by two screws, and what guarantee sensor is 8mm near distance, as shown in the figure.
With reference to Fig. 4, the used YD801-4/2 threephase asynchronous machine 2 of the utility model, the rotating speed of starter motor 21420r/min, the demonstration of observation oscilloscope changes, and has demonstrated rectangular wave as shown in Figure 4 at oscillograph; Stop the rotating speed of back starter motor 2850r/min, occurred rectangular wave as shown in Figure 4 on the oscillograph.
Principle of the present utility model, the signals of rotational speed sensor dish of motor 2 is installed on the bent axle, and sensor 4 output signals can obtain corresponding square-wave pulse signal during work after shaping.Utilize the input capture function of M68HC11 single-chip microcomputer, can obtain the mistiming of two adjacent rising edges, can calculate current rotation speed n for [3] n=j@2000000@60/ (i@T)=1.2@108@j/ (i@T) (r/min), wherein i is tach signal dish revolution output signal number; J is the number of turns that signal panels change 1 circle engine to be changeed (j=1 when signal panels are installed on the bent axle is contained on the camshaft then j=2); T is the time difference between adjacent two rising edges of calculating of single-chip microcomputer input capture.
Claims (5)
1. engine rotational speed signal analogue means based on Hall element, at least comprise motor (2), it is characterized in that: be arranged on support (1) top at motor (2), one end of motor (2) is connected with signal panels (3), the top of signal panels (3) is connected with sensor (4), and sensor (4) links to each other with oscillograph (7) with shaping circuit (6) more successively.
2. the engine rotational speed signal analogue means based on Hall element as claimed in claim 1, it is characterized in that: described sensor (4) is Hall element, and model is KHO-03DA.
3. the engine rotational speed signal analogue means based on Hall element as claimed in claim 1, it is characterized in that: described motor (2) is the YD801-4/2 threephase asynchronous machine.
4. the engine rotational speed signal analogue means based on Hall element as claimed in claim 1 is characterized in that: the circuit of described shaping circuit (6) employing finite gain low-pass filter.
5. the engine rotational speed signal analogue means based on Hall element as claimed in claim 1, it is characterized in that: described oscillograph model is TDS1000B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220725289 CN203117214U (en) | 2012-12-25 | 2012-12-25 | Engine rotating speed signal simulation device based on Hall sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220725289 CN203117214U (en) | 2012-12-25 | 2012-12-25 | Engine rotating speed signal simulation device based on Hall sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203117214U true CN203117214U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220725289 Expired - Fee Related CN203117214U (en) | 2012-12-25 | 2012-12-25 | Engine rotating speed signal simulation device based on Hall sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN203117214U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105573146A (en) * | 2016-02-26 | 2016-05-11 | 上海工程技术大学 | Shaft transmission-based engine rotation speed signal simulation system |
| CN110631833A (en) * | 2019-09-09 | 2019-12-31 | 哈尔滨工程大学 | Magnetoelectric rotating speed generator |
-
2012
- 2012-12-25 CN CN 201220725289 patent/CN203117214U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105573146A (en) * | 2016-02-26 | 2016-05-11 | 上海工程技术大学 | Shaft transmission-based engine rotation speed signal simulation system |
| CN105573146B (en) * | 2016-02-26 | 2019-04-30 | 上海工程技术大学 | A kind of engine rotational speed signal simulation system based on axis transmission |
| CN110631833A (en) * | 2019-09-09 | 2019-12-31 | 哈尔滨工程大学 | Magnetoelectric rotating speed generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20131225 |