CN205333823U - Photoelectricity speed indicator and speedtransmitter test bench - Google Patents
Photoelectricity speed indicator and speedtransmitter test bench Download PDFInfo
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- CN205333823U CN205333823U CN201620022778.7U CN201620022778U CN205333823U CN 205333823 U CN205333823 U CN 205333823U CN 201620022778 U CN201620022778 U CN 201620022778U CN 205333823 U CN205333823 U CN 205333823U
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- velocity sensor
- radiator fan
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Abstract
The utility model discloses a photoelectricity speed indicator and speedtransmitter test bench has solved under different work condition, and the problem of unable its wind speed of automatically regulated of radiator fan, its technical scheme main points be, during temperature rising when temperature detecting element detects photoelectricity speed indicator and speedtransmitter test bench in, then modulation unit is with the oscillating signal's that increases the multi resonant oscillating unit and exported duty cycle, the utility model discloses a photoelectricity speed indicator and speedtransmitter test bench is through the duty cycle of adjusting oscillating signal for ambient temperature reduces its duty cycle so that radiator fan's wind speed reduces, thereby reduces its power when lower, in order to reach the sparingly effect of electric energy, avoids appearing being in all the time the waste or the not good circumstances of radiating effect of the electric energy that same kind of wind speed heat dissipation led to the fact.
Description
Technical field
This utility model relates to testing equipment, more specifically, it relates to a kind of photoelectric speed table and velocity sensor testing stand。
Background technology
Testing stand is applicable to various product and carries out correlation test, and testing stand also includes a variety of, has for mechanical parameter detection, also have for electric parameter detection, by testing stand, product is detected, to obtain the parameter of correspondence, in order to product is improved with perfect by the later stage。
Photoelectric speed table and velocity sensor testing stand are the equipment in order to provide pulse signal to the locomotive carrying out electrical control, this pulse signal is the major parameter of motorcycle safety, normal operation, and photoelectric speed table and velocity sensor testing stand mainly include servomotor, industry capture card, oscilloscope module, industrial computer (IPC) composition, programmable power supply can be adjusted according to host computer instruction and provide power supply for sensor, adjust sensor rotation speed by servomotor, rotate code-disc simulating wheel according to instruction with arbitrary speed and rotate thus producing signal for testing。
Owing to being provided with many electrical equipments inside trial target, so when in the process brought into operation, then can generate heat, so the temperature that powerful radiator fan carries out dispelling the heat to keep inside generally can be arranged, but when winter or temperature are relatively low, still adopt powerful radiator fan to carry out dispelling the heat, the waste of electric energy can be caused, be unfavorable for energy-conservation。
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is in that to provide a kind of photoelectric speed table and velocity sensor testing stand, can its servomotor be monitored in real time。
For achieving the above object, this utility model provides following technical scheme: a kind of photoelectric speed table and velocity sensor testing stand, including radiator fan, also includes the auto-adjusting circuit being automatically adjusted wind speed for controlling radiator fan；Described auto-adjusting circuit includes detecting the temperature detecting unit of signal for the temperature detecting in photoelectric speed table and velocity sensor testing stand with output temperature, for providing oscillator signal to the multi-harmonic-oscillations unit of radiator fan, for receiving temperature detection signal and exporting modulation signal to the modulating unit of multi-harmonic-oscillations unit；
Detect that when temperature detecting unit when the temperature in photoelectric speed table and velocity sensor testing stand reduces, then modulating unit is to reduce the dutycycle of the oscillator signal that multi-harmonic-oscillations unit exports。
Adopt such scheme, by regulating the dutycycle of oscillator signal, when making ambient temperature relatively low, reduce its dutycycle so that the wind speed of radiator fan reduces, thus reducing its power, to reach to save the effect of electric energy, and when ambient temperature raises, then increase its dutycycle so that the wind speed of radiator fan improves, its radiating effect is improved, when dispelling the heat according to high wind speed, then appear in temperature relatively low time, dispel the heat for a long time when carrying out dispelling the heat without high wind speed and cause the situation of waste electric energy, when dispelling the heat according to low wind speed, then appear in temperature higher time, equipment well cannot be dispelled the heat, do not reach intended radiating effect, above-mentioned situation is can effectively solve the problem that by auto-adjusting circuit, namely can guarantee that the saving of electric energy, also the function of heat radiation can well be realized。
As preferably, described temperature detecting unit is critesistor RT1。
Adopt such scheme, critesistor RT1 device is a class of sensing element, the typical feature of critesistor RT1 device is temperature sensitive, different resistance values is shown at different temperature, and adopt critesistor RT1 more economically, and can well realize the detection of temperature in testing stand, and simple in construction, easy to use。
As preferably, described modulating unit includes the first divider resistance R2 and the second divider resistance R3, described second divider resistance R3 is connected with the first divider resistance R2 with after critesistor RT1 parallel connection, and the junction between described first divider resistance R2 and critesistor RT1 is to provide modulation signal。
Adopt such scheme, after critesistor RT1 and the second divider resistance R3 parallel connection and the first mutual dividing potential drop of divider resistance R2, so that when critesistor RT1 makes its change in resistance in extraneous variations in temperature, can be reflected by magnitude of voltage, it is achieved the situation of change of ambient temperature is changed by voltage signal and represents。
As preferably, described critesistor RT1 is provided with some and corresponds to different model, some described critesistor RT1 is all coupled with switching switch K1 so that its arbitrary critesistor RT1 is cut circuit。
Adopt such scheme, can realize the critesistor RT1 of different model is switched over by switching the switching of switch K1, it is easy to be applied in each environment, such as need temperature variation little, but in the environment that change in resistance is big etc., or when one of them critesistor RT1 damages, then can pass through to switch to intact critesistor RT1 place。
As preferably, being additionally provided with control unit between described multi-harmonic-oscillations unit and radiator fan, described control unit is to receive oscillator signal to control the wind speed of radiator fan。
As preferably, described multi-harmonic-oscillations unit is made up of 555 chips。
Adopt such scheme, adopt such scheme, control unit is bidirectional triode thyristor VT, enable it to control powerful electromechanical equipment with milliampere level electric current, avoid interfering between forceful electric power and weakness and cause whole circuit unstable, simultaneously bi-directionally the reaction of controllable silicon VT is exceedingly fast, and opens, turns off in Microsecond grade；And it is contactless operation, no-spark, noiselessness, efficiency is high, cost is low, and the simple in construction of 555 chips and facilitating implementation, the multi-harmonic-oscillations unit consisted of 555 chips can very simply control the gate pole of bidirectional triode thyristor VT, it is only necessary to is connected with gate pole by the 3rd foot of 555 chips, so simple in construction is easily achieved。
As preferably, described auto-adjusting circuit also includes display unit, and described display unit is coupled to regulon to receive modulation signal, and display unit is provided with a reference value Vref, if modulation signal is more than reference value Vref, then display unit is to show that radiator fan is in high-speed cruising state。
Adopt such scheme, whether radiator fan can be in high-speed cruising state by display unit displays, to remind the concrete situation of user, if the temperature in the external world gradually rises, then the voltage modulating signal also can gradually rise, and the voltage of this modulation signal compares mutually with reference value Vref, if the voltage of modulation signal is more than reference value Vref, then display unit displays, and represents that being currently in radiator fan is in the state of heat radiation at a high speed so that user is situation clearly。
As preferably, described auto-adjusting circuit includes 555 multivibrators, critesistor RT1, first divider resistance R2, second divider resistance R3, bidirectional triode thyristor VT, comparator and display lamp LED, described critesistor RT1, connect with the first divider resistance R2 after second divider resistance R3 is parallel with one another and the junction of critesistor RT1 and the first divider resistance R2 is connected to the 5th pin place of 555 multivibrators, 3rd pin of described 555 multivibrators is connected with the gate pole of bidirectional triode thyristor VT, the main terminal of described bidirectional triode thyristor VT is connected with radiator fan, the end of oppisite phase of described comparator is connected to the junction between critesistor RT1 and the first divider resistance R2, in-phase end place is provided with a reference value Vref, described display lamp LED be connected with the outfan of comparator after ground connection ground。
Adopt such scheme, can effectively solve the problem that technical problem, can effectively ensure, when realizing rationally heat radiation, to save electric energy as much as possible。
This utility model is in terms of existing technologies:
1, when ambient temperature is relatively low, overregulating the dutycycle of oscillator signal, the wind speed of radiator fan being reduced reducing its dutycycle, thus reducing its power；When ambient temperature is too high, by increasing the dutycycle of oscillator signal so that the wind speed of radiator fan can improve automatically, to reach better radiating effect。
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings。
Fig. 1 is the structural representation of the photoelectric speed table of the present embodiment and velocity sensor testing stand；
Fig. 2 is the circuit theory diagrams of the auto-adjusting circuit of the present embodiment。
In figure: 1, auto-adjusting circuit；11, temperature detecting unit；12, multi-harmonic-oscillations unit；13, modulating unit；14, control unit；15, display unit。
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail。
This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made the amendment not having creative contribution as required by those skilled in the art after reading this specification, but as long as being affected by the protection of Patent Law in right of the present utility model。
The disclosed a kind of photoelectric speed table of the present embodiment and velocity sensor testing stand, as it is shown in figure 1, velocity sensor controls to provide pulse signal for locomotive electric cad system, be the major parameter of motorcycle safety, normal operation。Velocity sensor test system must possess the measuring accuracy guarantee velocity sensor of broader test the speed scope and Geng Gao can provide rate signal accurately。Ferrum mark TB/T2760.X-2010 design pressed by photoelectric whirl degree table and velocity sensor。It is exclusively used in the list verification of locomotive speedmeter and velocity sensor and combines verification。Photoelectric speed table and velocity sensor testing stand mainly include servomotor, industry capture card, oscilloscope module, industrial computer (IPC) composition。Can be adjust programmable power supply according to host computer instruction to provide power supply for sensor, adjust sensor rotation speed by servomotor。Rotate code-disc simulating wheel according to instruction arbitrary speed to rotate thus producing signal for testing。The industry capture card function of tonic chord: logic control, timing controlled, tally control, step motion control etc.。What this test system was selected is the industrial capture card with the output of two-way high-speed counter。The oscillograph pulse wave shape that speed probe is exported, pulse duty factor, level, pulsewidth effectively measure analysis。Basic specification and parameter: specifications and models are nonstandard；Input power is AC220V, 50HZ；Velocity interval is 0 ~ 300km/h；The range of speeds is 0 ~ 2000r/min；Certainty of measurement is 0.3 grade；Overall dimensions are 1380 × 950 × 1500mm。
As in figure 2 it is shown, photoelectric speed table and velocity sensor testing stand also include radiator fan, also include the auto-adjusting circuit 1 being automatically adjusted wind speed for controlling radiator fan；Auto-adjusting circuit 1 includes detecting the temperature detecting unit 11 of signal for the temperature detecting in photoelectric speed table and velocity sensor testing stand with output temperature, for providing oscillator signal to the multi-harmonic-oscillations unit 12 of radiator fan, for receiving temperature detection signal and exporting modulation signal to the modulating unit 13 of multi-harmonic-oscillations unit 12；Detect that when temperature detecting unit 11 when the temperature in photoelectric speed table and velocity sensor testing stand reduces, then modulating unit 13 is to reduce the dutycycle of the oscillator signal that multi-harmonic-oscillations unit 12 exports。
Embodiment one, as shown in Figure 2, temperature detecting unit 11 is critesistor RT1, critesistor RT1 is a class of sensing element, semistor RT1 and negative tempperature coefficient thermistor RT1 it is divided into according to temperature coefficient difference, the typical feature of critesistor RT1 is temperature sensitive, shows different resistance values at different temperature。Semistor RT1 device resistance value when temperature is more high is more big, and negative tempperature coefficient thermistor RT1 device resistance value when temperature is more high is more low, and they belong to semiconductor device, and the present embodiment preferably employs negative tempperature coefficient thermistor RT1。
Multi-harmonic-oscillations unit 12 is made up of 555 chips, during power on, the three foot output high level of 555, power supply is charged to electric capacity C2 by R2 and R3 simultaneously, when the voltage on C2 arrives threshold voltage (2/3 supply voltage) of 555 integrated circuit six feet, seven feet of 555 bleed off the electricity in electric capacity C2, and three feet are become low level by high level。When the voltage of electric capacity C2 drops to 1/3 supply voltage, three feet become again high level, and power supply charges to electric capacity C2 through R2 and R3 again simultaneously, so goes round and begins again, and form vibration。
Modulating unit 13 includes the first divider resistance R2 and the second divider resistance R3, second divider resistance R3 is connected with the first divider resistance R2 with after critesistor RT1 parallel connection, junction between first divider resistance R2 and critesistor RT1 is to provide modulation signal, the junction of critesistor RT1 and the first divider resistance R2 is connected to the 5th pin place of multi-harmonic-oscillations unit 12, this critesistor RT1 is negative tempperature coefficient thermistor RT1, namely when ambient temperature raises, then the resistance of critesistor RT1 reduces, and the second divider resistance R3 is in parallel with critesistor RT1, then its resistance also reduces, afterwards with the first mutual dividing potential drop of divider resistance R2, make the voltage on the first divider resistance R2 more and more higher, namely the voltage modulating signal can be more and more lower, otherwise, then modulation signal raises。
Control unit 14 it is additionally provided with between multi-harmonic-oscillations unit 12 and radiator fan, control unit 14 is to receive oscillator signal to control the wind speed of radiator fan, the preferably bidirectional controllable silicon VT of control unit 14, power supply owing to providing for radiator fan is alternating current, and bidirectional triode thyristor VT can be suitably used for alternating current, and powerful electromechanical equipment can be controlled with milliampere level electric current, avoid interfering between forceful electric power and weakness and cause whole circuit unstable, simultaneously bi-directionally the reaction of controllable silicon VT is exceedingly fast, and opens, turns off in Microsecond grade；And being contactless operation, no-spark, noiselessness, efficiency is high, and cost is low。
Critesistor RT1 and the first divider resistance R2 series connection and both junctions are connected to the 5th pin place of 555 multivibrators, 3rd pin of the multi-harmonic-oscillations unit 12 being made up of 555 chips is connected with the gate pole of bidirectional triode thyristor VT, the main terminal of bidirectional triode thyristor VT is connected with radiator fan, by the temperature that critesistor RT1 detection is extraneous, when ambient temperature raises, then the resistance of critesistor RT1 reduces, and the second divider resistance R3 is in parallel with critesistor RT1, then its resistance also reduces, can be obtained by the formula of dutycycle, q=(Ra+Rb)/(Ra+2Rb), Ra is the first divider resistance R2 herein, and Rb is the resistance after critesistor RT1 and the second divider resistance R2 parallel connection, can obtain by calculating, dutycycle increases, and then regulate the angle of flow of bidirectional triode thyristor VT, thus the voltage changed between radiator fan, thus realizing the rotating speed automatically improving radiator fan to improve radiating efficiency, otherwise, then reduce the rotating speed of radiator fan to reduce the consumption of electric energy。
Embodiment two, as shown in Figure 2, the present embodiment realizes based on embodiment one, critesistor is provided with some and corresponds to different model, all being coupled with switching switch K1 on some critesistor so that its arbitrary critesistor is cut circuit, critesistor is preferably three, respectively critesistor RT1, critesistor RT2 and critesistor RT3, and the temperature coefficient of three critesistor is all different, and it is the critesistor of negative temperature coefficient。
Embodiment three, as shown in Figure 2, the present embodiment realizes based on embodiment one, auto-adjusting circuit 1 also includes display unit 15, display unit 15 is coupled to regulon to receive modulation signal, and display unit 15 is provided with a reference value, if modulation signal is more than reference value, then display unit 15 is to show that radiator fan is in high-speed cruising state, display unit 15 includes comparator and display lamp LED, comparator is preferably LM393A, the end of oppisite phase of comparator is connected to the junction between critesistor RT1 and the first divider resistance R2, in-phase end place is provided with a reference value Vref, this reference value Vref is arranged by R5, display lamp LED be connected with the outfan of comparator after ground connection, namely when ambient temperature raises, the voltage that modulation signal is corresponding reduces, by comparator, the voltage of modulation signal is compared mutually with reference value Vref, when the voltage of modulation signal is less than reference value Vref, then represent that being in radiator fan is in high-speed cruising state, the outfan of comparator controls display lamp LED and lights, otherwise, then display lamp LED extinguishes。
Claims (8)
1. photoelectric speed table and a velocity sensor testing stand, including radiator fan, is characterized in that: also include being automatically adjusted the auto-adjusting circuit (1) of wind speed for controlling radiator fan；Described auto-adjusting circuit (1) include for the temperature detecting in photoelectric speed table and velocity sensor testing stand with output temperature detect signal temperature detecting unit (11), for provide oscillator signal to radiator fan multi-harmonic-oscillations unit (12), be used for receiving temperature detection signal and export the modulation signal modulating unit (13) to multi-harmonic-oscillations unit (12)；
Detect that when temperature detecting unit (11) when the temperature in photoelectric speed table and velocity sensor testing stand reduces, then modulating unit (13) is to reduce the dutycycle of the oscillator signal that multi-harmonic-oscillations unit (12) exports。
2. photoelectric speed table according to claim 1 and velocity sensor testing stand, is characterized in that: described temperature detecting unit (11) is critesistor RT1。
3. photoelectric speed table according to claim 2 and velocity sensor testing stand, it is characterized in that: described modulating unit (13) includes the first divider resistance R2 and the second divider resistance R3, described second divider resistance R3 is connected with the first divider resistance R2 with after critesistor RT1 parallel connection, and the junction between described first divider resistance R2 and critesistor RT1 is to provide modulation signal。
4. photoelectric speed table according to claim 2 and velocity sensor testing stand, it is characterized in that: described critesistor RT1 is provided with some and corresponds to different model, some described critesistor RT1 are all coupled with switching switch K1 so that its arbitrary critesistor RT1 is cut circuit。
5. photoelectric speed table according to claim 1 and velocity sensor testing stand, it is characterized in that: be additionally provided with control unit (14) between described multi-harmonic-oscillations unit (12) and radiator fan, described control unit (14) is to receive oscillator signal to control the wind speed of radiator fan。
6. photoelectric speed table according to claim 1 and velocity sensor testing stand, is characterized in that: described multi-harmonic-oscillations unit (12) is made up of 555 chips。
7. photoelectric speed table according to claim 1 and velocity sensor testing stand, it is characterized in that: described auto-adjusting circuit (1) also includes display unit (15), described display unit (15) is coupled to regulon to receive modulation signal, and display unit (15) is provided with a reference value Vref, if modulation signal is more than reference value Vref, then display unit (15) is to show that radiator fan is in high-speed cruising state。
8. photoelectric speed table according to claim 1 and velocity sensor testing stand, it is characterized in that: described auto-adjusting circuit (1) includes 555 multivibrators, critesistor RT1, first divider resistance R2, second divider resistance R3, bidirectional triode thyristor VT, comparator and display lamp LED, described critesistor RT1, connect with the first divider resistance R2 after second divider resistance R3 is parallel with one another and the junction of critesistor RT1 and the first divider resistance R2 is connected to the 5th pin place of 555 multivibrators, 3rd pin of described 555 multivibrators is connected with the gate pole of bidirectional triode thyristor VT, the main terminal of described bidirectional triode thyristor VT is connected with radiator fan, the end of oppisite phase of described comparator is connected to the junction between critesistor RT1 and the first divider resistance R2, in-phase end place is provided with a reference value Vref, described display lamp LED be connected with the outfan of comparator after ground connection。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620022778.7U CN205333823U (en) | 2016-01-12 | 2016-01-12 | Photoelectricity speed indicator and speedtransmitter test bench |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620022778.7U CN205333823U (en) | 2016-01-12 | 2016-01-12 | Photoelectricity speed indicator and speedtransmitter test bench |
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| CN205333823U true CN205333823U (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620022778.7U Expired - Fee Related CN205333823U (en) | 2016-01-12 | 2016-01-12 | Photoelectricity speed indicator and speedtransmitter test bench |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108241071A (en) * | 2016-12-23 | 2018-07-03 | 大陆汽车电子（连云港）有限公司 | There are the test system and method for the velocity sensor of angle detecting |
| CN111664888A (en) * | 2020-05-15 | 2020-09-15 | 杭州杰牌传动科技有限公司 | Distributed speed reduction motor energy monitoring system and method |
-
2016
- 2016-01-12 CN CN201620022778.7U patent/CN205333823U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108241071A (en) * | 2016-12-23 | 2018-07-03 | 大陆汽车电子（连云港）有限公司 | There are the test system and method for the velocity sensor of angle detecting |
| CN111664888A (en) * | 2020-05-15 | 2020-09-15 | 杭州杰牌传动科技有限公司 | Distributed speed reduction motor energy monitoring system and method |
| CN111664888B (en) * | 2020-05-15 | 2022-08-02 | 杭州杰牌传动科技有限公司 | Distributed speed reduction motor energy monitoring system and method |
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| C14 | Grant of patent or utility model | ||
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| 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: 20160622 Termination date: 20180112 |