CN206362905U

CN206362905U - The detecting system of brush motor

Info

Publication number: CN206362905U
Application number: CN201621468264.0U
Authority: CN
Inventors: 邹维克
Original assignee: SHANGHAI AOBOOR ELECTRONIC CO Ltd
Current assignee: SHANGHAI AOBOOR ELECTRONIC CO Ltd
Priority date: 2016-12-29
Filing date: 2016-12-29
Publication date: 2017-07-28
Anticipated expiration: 2026-12-29

Abstract

This application provides a kind of detecting system of brush motor, the application passes through the setting signal induction installation in effective search coverage of the armature field that produces and stator field after brush motor to be measured energization, obtain the second induced voltage signal that the first induced voltage signal and stator field of the armature field initiation at position trigger, utilize polarity (or phase sequence) relation of the two induced voltage signals, according to the steering judgment rule for the brush motor to be measured that prestores, it is determined when front steering and is exported, and utilize the steering rule of the standard specimen brush motor prestored, judge to deserve whether front steering is correctly to turn to and export, so that testing staff learns being required when whether front steering meets its steering for the brush motor to be measured.It can be seen that, the application only sets the detecting system to can detect motor and turned in the surrounding space of brush motor, and detection process is simple, and in the absence of Mechanical Contact and wear problem, and detecting system is simple in construction, it is easy to accomplish.

Description

The detecting system of brush motor

Technical field

The application is related to motor detection technique field, and in particular to the detecting system of brush motor.

Background technology

In daily life and various Industry Controls, motor plays irreplaceable work as power set With because motor steering mistake will cause driving abnormal, it is therefore necessary to which the steering to motor is detected.

Wherein, for the detection of conventional at present DC permanent magnet brush motor or excitation brush motor, prior art It is connected typically by by grating encoder with motor reel, or the roller for being provided with grating encoder is connect with motor reel Touch and rotate with, afterwards, analyzed by the output waveform to grating encoder, it is determined that detected brush motor Turn to.

But, the structure of existing this detecting system is complex, cumbersome, and can produce in detection process machine Tool weares and teares.

Utility model content

In view of this, this application provides the detecting system of brush motor, the inspection of existing brush motor is solved Examining system is complicated, cumbersome and there is the technical problem of mechanical wear.

In order to solve the above-mentioned technical problem, technical scheme provided herein is as follows：

A kind of detecting system of brush motor, the system includes：Signal induction device, control circuit and power supply dress Put, wherein：

The signal induction device is arranged on effective search coverage of the brush motor to be measured, obtains at position Armature field trigger the first induced voltage signal and stator field trigger the second induced voltage signal, after energization around The armature field and stator field that space is produced are determined；

The control circuit is connected with the signal induction device and the signal output apparatus respectively, utilizes the institute of acquisition The characteristic relation of the first induced voltage signal and second induced voltage signal is stated, is had according to the AC permanent magnet to be measured that prestores The steering judgment rule of brush motor, determines that the brush motor to be measured works as front steering, and have brush electricity using the standard specimen prestored The steering rule of motivation, judge the brush motor to be measured when front steering whether be it is correct turn to, acquisition judged result and The brush motor to be measured works as front steering；

The electric supply installation is connected with the brush motor to be measured.

It is preferred that,

When the brush motor to be measured is DC permanent magnet brush motor, the stator field is specially stator permanent magnet Body magnetic field, first induced voltage signal and the characteristic relation of second induced voltage signal that the control circuit is obtained The polar relationship of specially described first induced voltage signal and second induced voltage signal；

When the brush motor to be measured is excitation brush motor, the stator field is specially stator excitation magnetic , first induced voltage signal and the characteristic relation of second induced voltage signal that the control circuit is obtained are specific For the polarity or phase order relation of first induced voltage signal and second induced voltage signal.

It is preferred that, the signal induction device includes：The first magneto sensor for making magnetic induction direction be set into first angle With the second magneto sensor, wherein：

The central shaft of the brush motor to be measured is pointed in the magnetic induction direction of first magneto sensor, obtains institute in place Put the first induced voltage signal that the armature field at place triggers；

Second magneto sensor obtains the second induced voltage signal that the stator field at position triggers.It is preferred that , the signal induction device includes：3rd magneto sensor；

The magnetic induction direction of 3rd magneto sensor and the central shaft of the brush motor to be measured are into second angle, institute State second angle and be not equal to 0 degree, 90 degree, 180 degree and 270 degree

It is preferred that, the control circuit includes：First signal processing circuit, secondary signal process circuit, judging circuit, deposit Reservoir and controller, wherein：

First signal processing circuit is connected with first magneto sensor, the secondary signal process circuit with it is described Second magneto sensor is connected；

The judging circuit is connected with first process circuit and the second processing circuit respectively, after identifying processing The polarity or phase sequence of first induced voltage signal and the second induced voltage signal；

The controller is connected with the memory and the judging circuit respectively, is believed using the first induced voltage of acquisition Polarity or phase order relation number with second induced voltage signal, described to be measured have brush electricity according to what is obtained from the memory The steering judgment rule of motivation, determines that the brush motor to be measured works as front steering, and utilize the mark obtained from the memory Whether the steering rule of sample brush motor, it is correct turn to when front steering to judge the brush motor to be measured.

It is preferred that, the signal induction device and the control circuit are arranged in same housing, and the system also includes：

It is arranged in the housing, and the telecommunication circuit that is connected of control circuit, the telecommunication circuit is by external equipment The triggering command of transmission is transmitted to the control circuit, so that the control circuit triggers the signal induction device and enters work State；And control obtained judged result and the brush motor to be measured to be set when front steering is sent to the outside by described It is standby；

Or, the signal output apparatus in the housing is arranged on, the judgement that the control circuit is obtained is obtained and export And the brush motor to be measured works as front steering as a result.

Signal induction device

It is preferred that, the signal induction device is arranged in two separate first shell bodies with the control circuit； Or, first magneto sensor, second magneto sensor and the control circuit are separately positioned on three independent In two housings；The system also includes signal output apparatus, wherein：

The signal output apparatus is arranged on where the control circuit in housing, or is arranged on and is different from described first In 3rd housing of housing and second housing, export the obtained judged result of control circuit and described to be measured have brush Motor works as front steering.

It is preferred that, the system also includes：

On-off circuit, so that the electric supply installation is connected by the on-off circuit with the brush motor to be measured, control Make the break-make between the electric supply installation and the brush motor to be measured.

It is preferred that, the system also includes：Cue circuit, wherein：

The cue circuit for the brush motor to be measured different steerings, and judge it is described it is to be measured have brush electronic Machine exports corresponding prompt message when the whether correct different judged results of front steering.

It is preferred that, the signal output apparatus includes：Display and/or speech player.

As can be seen here, this application provides the detecting system of brush motor, the application passes through in brush motor to be measured Armature field and effective detecting area of stator field that (such as DC permanent magnet brush motor or exciting motor) is produced after being powered Setting signal induction installation in domain, to obtain the first induced voltage signal of the armature field initiation at its position and determine The second induced voltage signal that sub- magnetic field (i.e. stator permanent magnet magnetic field or stator excitation magnetic field) is triggered, so that control circuit profit With first induced voltage signal and the characteristic relation of the second induced voltage signal, according to the steering for the brush motor to be measured that prestores Judgment rule, obtains the brush motor to be measured and works as front steering, simultaneously, additionally it is possible to utilize turning for the standard specimen brush motor prestored To rule, learn brush motor to be measured when front steering whether be it is correct turn to so that testing staff learns that this to be measured has brush electricity Motivation when front steering whether meet its turn to require.As can be seen here, the application is only set in the surrounding space of brush motor The detecting system is that detectable motor is turned to, and detection process is simple, in the absence of Mechanical Contact and wear problem, and detects system System is simple in construction, it is easy to accomplish.

Brief description of the drawings

, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this The embodiment of application, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis The accompanying drawing of offer obtains other accompanying drawings.

Fig. 1 is a kind of structural representation of the detecting system of straight brush motor of the application；

Fig. 2 is the structural representation of the detecting system of another brush motor of the application；

Fig. 3 is the structural representation of the detecting system embodiment of the application another brush motor；

Fig. 4 (a) is a kind of DC permanent magnet brush motor permanent magnet polarity arrangement of the application and armature energization polarity shape State；

Fig. 4 (b) is the Distribution of Magnetic Field figure corresponding to Fig. 4 (a)；

Fig. 4 (c) and Fig. 4 (d) is the induced voltage signal oscillogram corresponding to two kinds of magnetic field in Fig. 4 (b)；

Fig. 5 (a) is another DC permanent magnet brush motor permanent magnet polarity arrangement of the application and armature energization polarity State；

Fig. 5 (b) is the Distribution of Magnetic Field figure corresponding to Fig. 5 (a)；

Fig. 5 (c) and Fig. 5 (d) is the induced voltage signal oscillogram corresponding to two kinds of magnetic field in Fig. 5 (b)；

Fig. 6 (a) is the arrangement of another DC permanent magnet brush motor permanent magnet polarity of the application and armature energization polarity State；

Fig. 6 (b) is the Distribution of Magnetic Field figure corresponding to Fig. 6 (a)；

Fig. 6 (c) and Fig. 6 (d) is the induced voltage signal oscillogram corresponding to two kinds of magnetic field in Fig. 6 (b)；

Fig. 7 (a) is the stator excitation pole arrangement and armature energization polarity shape of a kind of excitation brush motor of the application State；

Fig. 7 (b) is the Distribution of Magnetic Field figure corresponding to Fig. 7 (a)；

Fig. 7 (c) and Fig. 7 (d) is the induced voltage signal oscillogram corresponding to two kinds of magnetic field in Fig. 7 (b)；

Fig. 8 (a) is the stator excitation pole arrangement and armature energization polarity of another excitation brush motor of the application State；

Fig. 8 (b) is the Distribution of Magnetic Field figure corresponding to Fig. 8 (a)；

Fig. 8 (c) and Fig. 8 (d) is the induced voltage signal oscillogram corresponding to two kinds of magnetic field in Fig. 8 (b)；

Fig. 9 (a) is the stator excitation pole arrangement and armature energization polarity of another excitation brush motor of the application State；

Fig. 9 (b) is the Distribution of Magnetic Field figure corresponding to Fig. 9 (a)；

Fig. 9 (c) and Fig. 9 (d) is the induced voltage signal oscillogram corresponding to two kinds of magnetic field in Fig. 9 (b)；

Figure 10 (a) is the stator excitation pole arrangement and armature energization polarity of another excitation brush motor of the application State；

Figure 10 (b) is the Distribution of Magnetic Field figure corresponding to Figure 10 (a)；

Figure 10 (c) and Figure 10 (d) is the induced voltage signal oscillogram corresponding to two kinds of magnetic field in Figure 10 (b)；

Figure 11 (a) and Figure 11 (b) is by the sense under the excitation brush motor different magnetic field polarity of AC-powered respectively Answer the phase relation schematic diagram of voltage signal；

The part-structure schematic diagram of the detecting system embodiment for another brush motor that Figure 12 provides for the application；

The structural representation of the detecting system embodiment for another brush motor that Figure 13 provides for the application；

The structural representation of the detecting system embodiment for another brush motor that Figure 14 provides for the application.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete Site preparation is described, it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.It is based on Embodiment in the application, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of the application protection.

In order that the above-mentioned purpose of the application, feature and advantage can be more obvious understandable, below in conjunction with the accompanying drawings and specifically Embodiment is described in further detail to the application.

As shown in figure 1, a kind of structural representation of the detecting system embodiment of the brush motor provided for the application, is fitted For the detection of DC permanent magnet brush motor and excitation brush motor, such as Fig. 1 only using DC permanent magnet brush motor as Example carries out schematically illustrate.In actual applications, the detecting system that the present embodiment is provided can include：Signal induction device 100, control Circuit 200 and electric supply installation 300 processed, wherein：

Electric supply installation 300 can be connected with brush motor 400 to be measured, according to actually detected needs, to be measured have brush for this The power supply of motor 400 is allowed to operate.

In the present embodiment, when brush motor 400 to be measured is specially DC permanent magnet brush motor, the electric supply installation 300 can be specifically commercial power rectification power supply or program-control DC power etc., when brush motor 400 to be measured is specially that excitation has brush electricity During motivation, the electric supply installation 300 can be specifically mains ac power supply, rectifier power source, or exchange programmable power supply, or direct current is program control Power supply etc., the application is not construed as limiting to the particular circuit configurations of electric supply installation 300, can be according to the structure of brush motor to be measured To determine, but it should be recognized that in actual applications, when the circuit structure of the electric supply installation 300 of selection is different, for reality Now brush motor 400 to be measured is powered, specific control process can be different.

Optionally, when electric supply installation 300 is programmable power supply, the electric supply installation 300 can be connected with control circuit 200 (annexation is not drawn into figure), so as to directly control electric supply installation 300 to be brush motor to be measured by the control circuit 200 400 power supplies.

Wherein, electric supply installation 300 can be arranged in a housing with control circuit 200, and user can be by being exposed at shell The external control electric supply installation 200 of control button trigger control circuit 200 works；Or, electric supply installation 300 is used as independent dress Put, worked by user by controlling the button on its own directly to trigger electric supply installation 300；Or, outside can also be passed through Equipment (such as computer equipment) sends a triggering command to the electric supply installation, controls it to be powered for brush motor to be measured, this Application is to triggering electric supply installation work, so as to be not construed as limiting for the concrete mode that brush motor to be measured is powered.

Certainly, the application can also be controlled the working condition of programmable power supply by other controllers, and the application is to program-controlled electric The control mode in source is not especially limited.

It should be noted that when electric supply installation 300 is programmable power supply, brush motor 400 to be measured can be direct current forever Magnetic brush motor or excitation brush motor, for different types of brush motor, it is necessary to from respective type Programmable power supply power.

Optionally, if electric supply installation 300 be mains supply, as shown in Fig. 2 the figure still using DC permanent magnet brush motor as Example progress is schematically illustrate, and the detecting system that the application is provided can also include on-off circuit 500, so that electric supply installation 300 is logical Cross the on-off circuit 500 to be connected with brush motor 400 to be measured, control electric supply installation 300 is logical with brush motor 400 to be measured It is disconnected, realize the power supply control to brush motor 400 to be measured.Similarly, in the practical application of the alternative embodiment, for difference The brush motor of type from the mains supply (mains ac power supply or commercial power rectification power supply) of respective type, it is necessary to be powered.

Optionally, as shown in figure 3, the figure carried out by taking excitation brush motor as an example it is schematically illustrate, with DC permanent magnet brush The detection mode of motor is similar, and the application no longer provides respective drawings, then in the application practical application, said switching circuit 500 can include relay, and the relay adhesive can be controlled by control circuit 200, so that electric supply installation 300 has to be to be measured Brush motor 400 is powered, now, as shown in figure 3, the Control end can be connected with control circuit 200, two ends are divided in addition It is not connected with brush motor 400 to be measured and electric supply installation 300.Certainly, the application can also be controlled using other controllers The adhesive and disconnection of relay, it is not limited to attachment structure as shown in Figure 3.

It should be noted that being not limited to above-mentioned relay for the application said switching circuit 500, electricity can also be Sub switch etc., the application is not construed as limiting to its concrete structure, and the application is only illustrated by taking relay as an example.

Signal induction device 100 can be arranged on effective search coverage of brush motor 400 to be measured, obtain position The second induced voltage signal that the first induced voltage signal and stator field that the armature field at place triggers trigger.

Wherein, effective search coverage of brush motor 400 to be measured can be that surrounding is empty after brush motor to be measured is powered Between the armature field that produces determine with stator field, be described in detail below.

In actual applications, electric supply installation 300 is the brush motor 400 to be measured after brush motor 400 to be measured is powered Armature will trigger dynamic magnetic field i.e. armature field because of the change of operating current, the armature field can include to be measured having brush Motor 400 is in the mutation magnetic field for starting moment initiation and the alternation pulsating field of stable operation stage, moreover, the armature magnetic Field will spread to the shell and its surrounding of brush motor 400 to be measured；Similarly, the stator of brush motor 400 to be measured is produced Magnetic field also can to brush motor 400 to be measured shell and its surrounding spread.It can be seen that, during actually detected, detection system Above-mentioned signal induction device 100 in system may be in the armature field and stator field, and be specifically to be located at armature field In the effective detection region of stator field, to ensure that signal induction device 100 is able to detect that corresponding induced electricity after working Press signal.

Wherein, in this application, it is above-mentioned fixed when brush motor 400 to be measured is specifically DC permanent magnet brush motor Sub- magnetic field is specifically stator permanent magnet magnetic field, now, the effective detecting area for the detection brush motor that signal induction device 100 is set Domain can be specifically the armature field and effective detection in stator permanent magnet magnetic field that direct current is produced after brush motor 400 is powered forever Region, and the second induced voltage signal is then the induced voltage signal triggered by stator permanent magnet magnetic field.

When brush motor 400 to be measured is specifically excitation brush motor, said stator magnetic field is specifically stator excitation Magnetic field, now, effective search coverage that signal induction device 100 is located at can be specifically that excitation brush motor 400 to be measured is led to The armature field produced after electricity and effective search coverage in stator excitation magnetic field, and the second induced voltage signal is encouraged by stator The induced voltage signal that magnetic magnetic field is triggered.

In this application, for the specific detection process of DC permanent magnet brush motor to be measured, only with AC permanent magnet to be measured There are brush motor 400 a pair of permanent magnets to be that S poles and N extremely example are illustrated.

Assuming that the mode of the permanent magnet S pole and N poles in DC permanent magnet brush motor 400 to be measured as shown in Fig. 4 (a) is entered Shown in polarity such as Fig. 4 (a) after row arrangement, and the armature energization of the DC permanent magnet brush motor 400 to be measured, i.e. permanent magnet N The armature operating current of pole side outwards, represents that the armature operating current of permanent magnet S pole side is represented, root with "+" inwards with " " According to the Left Hand Rule in electromagnetism, it may be determined that the armature of the DC permanent magnet brush motor 400 to be measured will be rotated clockwise, also It is to say, it is assumed that the permanent magnet polarity arrangement of DC permanent magnet brush motor 400 to be measured and armature energization polarity such as Fig. 4 (a) institutes Show, then the correct steering of the DC permanent magnet brush motor 400 to be measured should be clockwise rotates forward.

Mode according to the above analysis, if in Fig. 4 (a) DC permanent magnet brush motor 400 to be measured armature energization polarity hair It is raw to change, such as shown in 5 (a)；Or permanent magnet polarity arrangement changes, shown in such as Fig. 6 (a), both changes will all cause this to treat Survey DC permanent magnet brush motor 400 to turn to counterclockwise, i.e., incorrect to turn to, that is to say, that in the present embodiment, direct current to be measured Permanent magnet brush motor turns to be only correctly clockwise.

For the steering detection process of excitation brush motor to be measured, for the ease of description, still there is brush with the excitation to be measured Motor 400 is illustrated exemplified by having a pair of excitation poles.

Assuming that the armature and stator exciting coil to excitation brush motor 400 to be measured connect what forward dc electricity was produced Shown in current direction such as Fig. 7 (a), the right-hand law in electromagnetism, the stator excitation of the excitation brush motor 400 to be measured Polarity is the right N of left S, the Left Hand Rule in electromagnetism, it may be determined that the armature of the excitation brush motor 400 to be measured is by up time Pin is rotated, that is to say, that, it is assumed that the stator exciting coil of excitation brush motor 400 to be measured corresponds to armature coil and connects positive After direct current, shown in pole polarity such as Fig. 7 (a) of generation, then the correct steering of the excitation brush motor 400 to be measured should It is clockwise.

Method according to the above analysis, if the stator exciting coil of excitation brush motor 400 to be measured is around to changing in Fig. 7 (a) Become, or energization reversing, it can all cause stator excitation reversing shown in such as Fig. 8 (a)；Or, armature coil is around to changing Become or energization polarity changes, such as can all cause armature field reversing shown in 9 (a).Both changes will all cause The excitation brush motor 400 to be measured is turned to counterclockwise, i.e., incorrect to turn to, that is to say, that in the present embodiment, excitation to be measured Brush motor turns to be only correctly clockwise.

As can be seen here, DC permanent magnet brush motor is turned to and its stator permanent magnet polar alignment and armature energization polarity Relevant, the steering of excitation brush motor is relevant with its stator excitation polar alignment and armature energization polarity, and actually should In, when stator permanent magnet polar alignment (or the stator excitation polarity of excitation brush motor of DC permanent magnet brush motor Arrangement) it is different when, the stator permanent magnet magnetic field (or stator excitation magnetic field) of the permanent magnet (or magnet exciting coil) formation also can be Difference, similarly, when brush motor armature energization polarity to be measured is different, the armature is caused by its operating current direction change Armature field also can be different, the application can by analyzing these magnetic fields distributed to brush motor ambient envelope, from And determine brush motor to be measured work as front steering.

Wherein, during actually detected, the application can according to used in signal induction device 100 device detection performance Etc. factor, determine that it is able to detect that the maximum space scope for each magnetic field signal that brush motor to be measured is produced, afterwards, by this Signal induction device 100 sets and completes the detection to brush motor to be measured in the range of the maximum space.

Specifically, the armature in brush motor 400 to be measured is powered and produces armature field, and stator (i.e. stator permanent magnet Or stator exciting coil) produce stray field after, the signal induction device 100 can simultaneously be detected the electricity by the application The maximum space scope of pivot magnetic field and stray field is as its effective search coverage, when actually detected, can be by the signal sense Device 100 is answered to be arranged in effective search coverage.

In the present embodiment, can be powered the armature of brush motor 400 to be measured the armature field produced, and stator The maximum space scope that the magnetic field of generation can be collectively covered is as the first preset range, while signal induction device 100 is set Put in first preset range, and the useful signal maximum region of magnetic field generation can be detected, i.e., with AC permanent magnet to be measured The radially line of two permanent magnets of brush motor 400 be symmetry axis formation maximum angle as effective angle β, such as scheme Shown in 4 (b), or formed using the radially line of a pair of excitation poles of excitation brush motor 400 to be measured as symmetry axis Maximum angle as effective angle β, shown in such as Fig. 7 (b), when signal induction device 100 is located at diverse location, the effective angle Degree β direction will accordingly change.

It should be noted that above-mentioned Fig. 1~3 are only entered so that the signal induction device 100 is located at the position of the second quadrant as an example The mark explanation of row effective angle, when the signal induction device 100 is located at third quadrant, shown in such as Fig. 4 (b) or Fig. 7 (b), Its corresponding effective search coverage in magnetic field also can accordingly change, that is, become the lower section for the effective angle β that Fig. 1~3 are currently marked Symmetrical region, because the detection method under both of these case is similar, the application is no longer described in detail one by one herein.

Based on similar analysis, signal induction device 100 is located at the signal characteristic and the second quadrant that first quartile is sensed Identical, it is identical with third quadrant that signal induction device 100 is located at the signal characteristic that senses of fourth quadrant, and the application is herein not yet Another one is described in detail.

To sum up analyze, above-mentioned first preset range and effective angle β public domain are the above-mentioned effective detection of the application Region, its particular location is related to the particular location of signal induction device 100.It should be noted that tool of the application to angle beta Body numerical value is not construed as limiting, and can be set by modes such as experiment or experiences.

When actually detected, signal induction device 100 can be arranged on to effective search coverage, such as Fig. 4 (b) or Fig. 7 (b) shown in.That is, the application is while signal induction device 100 is arranged in the first preset range, for be measured For the detection of DC permanent magnet brush motor, the RADIAL at its center between permanent magnet S and permanent magnet N can also be made into pre- If angle [alpha], for the detection of excitation brush motor to be measured, then the footpath at its center between two magnetic pole of the stator can be made To line into predetermined angle α, wherein, α<β/2, angle [alpha] can be as far as possible small in the case of conditions permit, but the application is not limited Its concrete numerical value；Moreover, having brush electricity apart from DC permanent magnet brush motor to be measured and excitation to be measured for signal induction device 100 The specific distance values on motivation surface, the application is also not construed as limiting, mainly can correctly recognize armature field and stator field The signal of initiation is setting principle.

It should be noted that in detection process of the application to brush motor 400 to be measured, once setting signal senses Behind the position of device 100, it can't change in detection process.

Based on above-mentioned analysis, the application can be treated by the analysis of the induced voltage signal triggered to magnetic field to realize The analysis of the armature field and stator field that are produced after brush motor 400 is powered is surveyed, to determine the brush motor to be measured 400 work as front steering, so, the application after setting signal induction installation 100, can fill by the induction of signal in the manner described above The first induced voltage signal that 100 acquisitions are triggered by armature field is put, and is believed by the second induced voltage that stator field triggers Number, and first induced voltage signal and the second induced voltage signal are sent to control circuit 200.

Optionally, in actual applications, as shown in figure 3, signal induction device 100 can include the first magneto sensor 110 With the second magneto sensor 120, but it is not limited thereto, wherein：

When setting the first magneto sensor 110 and the second magneto sensor 120, both magnetic induction directions can be made into first Angle is set, moreover, making the magnetic induction direction of the first magneto sensor 110 point to the central shaft of brush motor to be measured.

In the present embodiment, the first sense that the armature field at position triggers is obtained by the first magneto sensor 110 Voltage signal is answered, the second induced voltage signal that the stator field at position triggers is obtained by the second magneto sensor 120, Wherein, effective detection of armature field and stator field is respectively positioned on the first magneto sensor 110 and the second magneto sensor 120 Region, the application does not limit particular location.

It is preferred that, the first angle between the magnetic induction direction of the above-mentioned magneto sensor 120 of first magneto sensor 110 and second It can be 90 degree, that is to say, that the first magneto sensor 110 and the second magneto sensor 120 can be with respect to be orthogonal settings, such as Fig. 3 It is shown, but be not limited thereto, signal can be correctly recognized as suitable angle using both, and each accompanying drawing of the application is only with 90 degree Example is illustrated, and the detection process under other appropriate angles is similar, and the application is no longer described in detail one by one.

It should be noted that in this application, the magnetic induction direction of the first magneto sensor 110 and the second magneto sensor 120 And position is once set, can not arbitrarily it change again in the detection process of the brush motor to be measured 400 of the type, The detection of the type motor is completed for standard according to this.Wherein, either the first magneto sensor 110 or the second magneto sensor 120, when the direction in its corresponding magnetic field detected is identical with its magnetic induction direction, the induced electricity triggered by the magnetic field sensed Pressure signal is positive voltage signal；Conversely, if the direction in the corresponding magnetic field detected and its magnetic induction are in opposite direction, sense by The induced voltage signal that the magnetic field is triggered is negative voltage signal, such as Fig. 4 (c), Fig. 4 (d), Fig. 5 (c), Fig. 5 (d), Fig. 6 (c), Fig. 6 (d) shown in, or, such as Fig. 7 (c), Fig. 7 (d), Fig. 8 (c), Fig. 8 (d), Fig. 9 (c), Fig. 9 (d) are shown.

Optionally, the first magneto sensor 110 and the second magneto sensor 120 in the present embodiment can be Hall element Deng the application is not especially limited to this.

Optionally, above-mentioned signal induction device 100 can be the 3rd magneto sensor, this feelings only including a magneto sensor Under condition, the central shaft of the magnetic induction direction of the 3rd magneto sensor and brush motor to be measured can be set into second angle, It should be noted that the second angle is not equal to 0 degree, 90 degree, 180 degree and 270 degree, that is to say, that setting the 3rd magnetosensitive member , it is necessary to make the not parallel also out of plumb of central shaft of its magnetic induction direction and brush motor, so that the 3rd magneto sensor during part The existing central axis direction for pointing to brush motor to be measured in magnetic induction direction the first component, have again and first component orthogonal Second component, be respectively intended to obtain the first induced voltage signal that the armature field of position triggers, and stator field The second induced voltage signal triggered, its application principle in the application detecting system and above-mentioned signal induction device include two The application principle of the alternative embodiment description of individual magneto sensor is similar, and the present embodiment will not be described in detail herein.

Control circuit 200 can be connected with signal induction device 100, utilize the first induced voltage signal of acquisition and second The polarity or phase relation (power supply characteristic that can be specifically accessed according to brush motor to be measured is determined) of induced voltage signal, are pressed According to the steering judgment rule for the brush motor to be measured that prestores, determine that brush motor to be measured works as front steering, and utilize the mark prestored Sample brush motor steering rule, judge brush motor to be measured when front steering whether correctly after, acquisition judged result and Brush motor to be measured works as front steering.

In the present embodiment practical application, when induced voltage signal is positive voltage signal, it is believed that the induced voltage The polarity of signal is just；It is on the contrary, it is believed that the polarity of induced voltage signal is negative, and for the steering of brush motor to be measured Judgment rule, i.e., the corresponding pass between the polar relationship of two induced voltage signals of gained and the steering of brush motor to be measured System, the application can analyze determination in such a way.

It should be noted that the analysis of the application hereafter each embodiment, can include the first sense with signal induction device 100 Answer and illustrate exemplified by the sensing element 120 of element 110 and second, wherein, the first sensing element 110 and the second sensing element 120 Set-up mode be referred to the description of corresponding part above.

In actual applications, when brush motor to be measured is DC permanent magnet brush motor, fixed according to mentioned above principle Signal induction device 100, it is still electronic with the DC permanent magnet brush to be measured after being powered to DC permanent magnet brush motor 400 to be measured Machine 400 has exemplified by a pair of permanent magnets, it is assumed that the armature energization pole of the DC permanent magnet brush motor 400 to be measured shown in Fig. 4 (a) Property and permanent magnet polarity arrangement be correct, then, the ambient envelope of DC permanent magnet brush motor 400 to be measured will be formed such as Magnetic field shown in Fig. 4 (b), describes that this is represented by dashed line in the different types of magnetic field to be formed, illustrations for convenience The armature field that the armature energization of DC permanent magnet brush motor 400 to be measured triggers, the stator of its permanent magnet is shown forever with solid line Magnets magnetic fields.Similarly, as the waveform of the first induced voltage signal triggered by armature field is represented by dashed line in Fig. 4 (c), Fig. 4 (d) Figure, the oscillogram of the second induced voltage signal indicated by the solid line triggered by stator permanent magnet magnetic field hereafter no longer illustrates one by one.

For leading to electropolar AC permanent magnet to be measured with the correct permanent magnet polarity arrangement shown in Fig. 4 (a) and armature and having Brush motor, if the effective angle during signal induction device 100 is set in figure 4 (b) above DC permanent magnet brush motor to be measured When spending in β, the first induced voltage signal U1 (t) oscillograms that should be sent out by armature field that the signal induction device 100 is sensed Dotted line waveform figure that will be as shown in Fig. 4 (c), while the second induced voltage signal triggered by stator permanent magnet magnetic field sensed U2 oscillograms will be as shown in Fig. 4 (c) solid line waveform figure.

In DC permanent magnet brush motor energization start-up course to be measured, its armature starting current will trigger mutation moment Magnetic field, the induced voltage signal that now signal induction device 100 is obtained will be such as the wave head part of Fig. 4 (c) dotted line waveform figures, it Afterwards, DC permanent magnet brush motor to be measured enters after stable operation stage, and the less operating current of its armature can produce weaker Alternation pulsating field, during this period, the induced voltage signal amplitude that signal induction device 100 is obtained are smaller, such as Fig. 4 (c) dotted lines The less oscillogram of rear amplitude on oscillogram medium wave head point, the application can represent the wave head part pole of armature field Property, the i.e. polarity of induced voltage signal.

Specifically, as shown in Fig. 4 (c), the first induced voltage signal U1 (t) that armature field triggers polarity for just, and The polarity for the second induced voltage signal U2 that stator permanent magnet magnetic field is triggered is negative, it is seen then that when signal induction device 100 is located at figure When at the position P1 shown in 4 (b), the polarity of the first induced voltage signal triggered by armature field is obtained and by stator permanent magnet The opposite polarity for the second induced voltage signal that magnetic field is triggered.Similarly, if being treated during signal induction device 100 is set in figure 4 (b) Survey in the effective angle β below DC permanent magnet brush motor, at the position P2 as shown in Fig. 4 (b), then, induction of signal dress Put obtain the oscillogram of the first induced voltage signal (being represented by dashed line) and the second induced voltage signal (indicated by the solid line) will be as Shown in Fig. 4 (d), it is seen then that the polarity of the first induced voltage signal now obtained and the polarity of the second induced voltage signal are still Conversely.

It can be seen that, it is assumed that the correct permanent magnet polarity of DC permanent magnet brush motor 400 to be measured is arranged and armature energization pole Property such as Fig. 4 (a) shown in, signal induction device 100 obtain the polarity of the first induced voltage signal triggered by armature field with by The opposite polarity for the second induced voltage signal that stator permanent magnet magnetic field is triggered.So, the application, which can be defined, works as armature field The polarity and the polarity phase of the second induced voltage signal triggered by stator permanent magnet magnetic field of the first induced voltage signal triggered Inverse time, DC permanent magnet brush motor to be measured is clockwise turn to when front steering；Conversely, when the first sensing of armature field initiation When the polarity of second induced voltage signal of the polarity of voltage signal with being triggered by stator permanent magnet magnetic field is identical, direct current to be measured is forever Magnetic brush motor is counterclockwise turn to when front steering.So as to according to this corresponding relation, determine DC permanent magnet brush electricity to be measured Motivation works as front steering.

In order to further verify the first induced voltage signal that armature field defined above triggers with by stator field (i.e. Stator permanent magnet magnetic field or stator excitation magnetic field) trigger the second induced voltage signal polar relationship, with treating for respective type The corresponding relation surveyed between the steering of brush motor, the application is referred to above-mentioned analysis method, changes this respectively to be measured straight Armature energization polarity and the permanent magnet polarity arrangement of permanent magnet brush motor are flowed, or changes the electricity of excitation brush motor to be measured Pivot and stator exciting coil energization polar alignment, during determining that the brush motor to be measured of respective type is inverted counterclockwise, by it The first induced voltage signal and the pole of the second induced voltage signal relation triggered by corresponding stator field that armature field triggers Sexual intercourse determines that herein by taking DC permanent magnet brush motor to be measured as an example, process is as follows：

On the basis of above-mentioned Fig. 4 (a), DC permanent magnet brush motor armature energization polarity is adjusted, shown in such as Fig. 5 (a), Keep permanent magnet polarity arrangement mode constant, make armature energization polarity and the armature energization opposite polarity shown in Fig. 4 (a), according to Left Hand Rule learns that now DC permanent magnet brush motor should be reversion counterclockwise.

From the point of view of DC permanent magnet brush motor is powered the magnetic field to be formed, such as shown in Fig. 5 (b), stator permanent magnet magnetic field side It is constant to (direction that magnetic field solid arrow is pointed in figure), and armature field direction and armature field in Fig. 4 (b) are in opposite direction. Now, if signal induction device 100 is arranged at Fig. 5 (b) position P1, the first sensing triggered by armature field of acquisition Voltage signal U1 (t) oscillograms and second induced voltage signal U2 oscillograms such as Fig. 5 (c) institutes triggered by stator permanent magnet magnetic field Show, be negative voltage signal；If signal induction device 100 is arranged at Fig. 5 (b) position P2, acquisition by armature field The first induced voltage signal U1 (t) oscillograms triggered and the second induced voltage signal U2 ripples triggered by stator permanent magnet magnetic field It is positive voltage signal shown in shape figure such as Fig. 5 (d).

As can be seen here, on the basis of Fig. 4 (a), after the energization polarity for changing permanent magnet brush generator, either by signal Induction installation 100 is arranged in Fig. 5 (b) in the effective angle β above DC permanent magnet brush motor to be measured, or direct current to be measured In effective angle β below permanent magnet brush motor, signal induction device 100 obtains the first induced voltage signal and the second sensing The polarity of voltage signal is all identical.

Similarly, on the basis of above-mentioned Fig. 4 (a), the polar alignment of the permanent magnet of DC permanent magnet brush motor is only adjusted, As shown in Fig. 6 (a), permanent magnet S and permanent magnet N are exchanged, learnt according to Left Hand Rule, now DC permanent magnet brush motor It is reversion counterclockwise.

Mode is understood according to the above analysis, in this case, and DC permanent magnet brush motor is powered the magnetic field to be formed will As shown in Fig. 6 (b), if signal induction device 100 is arranged at Fig. 6 (b) position P1, acquisition is triggered by armature field First induced voltage signal U1 (t) oscillograms and the second induced voltage signal U2 oscillograms for being triggered by stator permanent magnet magnetic field are such as It is positive voltage signal shown in Fig. 6 (c)；If signal induction device 100 is arranged at Fig. 6 (b) position P2, acquisition by First induced voltage signal U1 (t) oscillograms of armature field initiation and the second induced voltage triggered by stator permanent magnet magnetic field It is negative voltage signal shown in signal U2 oscillograms such as Fig. 6 (d).

As can be seen here, on the basis of Fig. 4 (a), after the polar alignment for only changing permanent magnet, either induction of signal is filled Put in the 100 effective angle β being arranged in Fig. 6 (b) above DC permanent magnet brush motor to be measured, or AC permanent magnet to be measured has In effective angle β below brush motor, signal induction device 100 obtains the first induced voltage signal and the second induced voltage letter Number polarity be all identical.

Similarly, in actual applications, when brush motor to be measured is excitation brush motor, fixed according to mentioned above principle Signal induction device 100, after being powered to excitation brush motor 400 to be measured, still only has with the excitation brush motor 400 to be measured Exemplified by a pair of excitation poles, it is assumed that the armature and excitation pole of the excitation brush motor 400 to be measured shown in Fig. 7 (a) lead to Polar alignment after forward dc electricity is correct, then, the ambient envelope of excitation brush motor 400 to be measured will be formed as schemed Magnetic field shown in 7 (b), describes this is represented by dashed line in the different types of magnetic field to be formed, illustrations for convenience and treats The armature field that the armature energization of excitation brush motor 400 triggers is surveyed, its stator excitation magnetic field is shown with solid line.Similarly, such as Fig. 7 (c), Fig. 7 (d) are represented by dashed line the oscillogram of the first induced voltage signal triggered by armature field, it is indicated by the solid line by The oscillogram for the second induced voltage signal that stator excitation magnetic field is triggered, hereafter no longer illustrates one by one.

Based on this, for being arranged with the stator excitation polarity corresponding with armature for connecting forward dc electricity exemplified by Fig. 7 (a) The excitation brush motor to be measured of row, if signal induction device 100 is arranged in Fig. 7 (b) in excitation brush motor to be measured In the effective angle β of side during P1 positions, the first induced voltage that should be sent out by armature field that the signal induction device 100 is sensed Signal U1 (t) oscillograms will be as shown in Fig. 7 (c) dotted line waveform figure, while sense triggered by stator excitation magnetic field Two induced voltage signal U2 (t) oscillograms will be as shown in Fig. 7 (c) solid line waveform figure.

As can be seen here, it is electronic with above-mentioned DC permanent magnet brush to be measured in the actual test of excitation brush motor to be measured The test process of machine is similar, in the start-up course that excitation brush motor to be measured connects direct current, and its armature starting current will Mutation magnetic field can be triggered moment, the induced voltage signal that now signal induction device 100 is obtained will be such as Fig. 7 (c) dotted line waveform figures Wave head part, afterwards, excitation brush motor to be measured enter stable operation stage after, the less operating current of its armature can be produced Raw weaker alternation pulsating field, during this period, the induced voltage signal amplitude that signal induction device 100 is obtained is smaller, such as Fig. 7 (c) the wave head part can be represented armature magnetic by the less oscillogram of rear amplitude on dotted line waveform figure medium wave head point, the application The polarity of the polarity, i.e. induced voltage signal of field.

Specifically, as shown in Fig. 7 (c), the first induced voltage signal U1 (t) that armature field triggers polarity for just, and The polarity for the second induced voltage signal U2 (t) that stator excitation magnetic field is triggered is negative, it is seen then that when signal induction device 100 is located at When at the position P1 shown in Fig. 7 (b), the polarity of the first induced voltage signal triggered by armature field is obtained and by stator excitation The opposite polarity for the second induced voltage signal that magnetic field is triggered.Similarly, treated if signal induction device 100 is arranged in Fig. 7 (b) Survey in the effective angle β below excitation brush motor, at the position P2 as shown in Fig. 7 (b), then, signal induction device is obtained The oscillogram for obtaining the first induced voltage signal (being represented by dashed line) and the second induced voltage signal (indicated by the solid line) will be such as Fig. 7 (d) shown in, it is seen then that the polarity of the first induced voltage signal now obtained and the polarity still phase of the second induced voltage signal Instead.

It can be seen that, it is assumed that the correct stator excitation polar alignment of excitation brush motor 400 to be measured and armature energization polarity As shown in Fig. 7 (a), signal induction device 100 obtains the polarity of the first induced voltage signal triggered by armature field and by fixed The opposite polarity for the second induced voltage signal that sub- excitation field triggers.So, the application can be defined when armature field triggers The first induced voltage signal polarity and the second induced voltage signal for being triggered by stator excitation magnetic field opposite polarity when, should Excitation brush motor to be measured is clockwise turn to when front steering；Conversely, when the first induced voltage signal of armature field initiation Second induced voltage signal of the polarity with being triggered by stator excitation magnetic field polarity it is identical when, the excitation brush motor to be measured When front steering is counterclockwise turns to.So as to according to this corresponding relation, determine that excitation brush motor to be measured works as front steering.

And the checking of the verification process for excitation brush motor to be measured and above-mentioned DC permanent magnet brush motor to be measured Process is similar, on the basis of Fig. 7 (a), changes excitation brush motor stator excitation energization polarity, shown in such as Fig. 8 (a), protects Hold armature energization polarity mode constant, learnt according to Left Hand Rule, now excitation brush motor should be reversion counterclockwise.

From the point of view of the magnetic field of excitation brush motor, such as shown in Fig. 8 (b), stator excitation magnetic direction (magnetic field solid line in figure The direction that arrow is pointed to) change, and armature field direction is identical with armature field direction in Fig. 7 (b).Now, if by signal Induction installation 100 is arranged at Fig. 8 (b) position P1, the first induced voltage signal U1 (t) triggered by armature field of acquisition Oscillogram and second induced voltage signal U2 (t) the oscillograms such as Fig. 8 (c) triggered by stator excitation magnetic field are shown, are positive electricity Press signal；If signal induction device 100 is arranged at Fig. 8 (b) position P2, the first sense triggered by armature field of acquisition Answer voltage signal U1 (t) oscillograms and second induced voltage signal U2 (t) the oscillograms such as Fig. 8 triggered by stator excitation magnetic field (d) it is negative voltage signal shown in.As can be seen here, on the basis of Fig. 7 (a), changing excitation has the stator excitation for brushing hair motor After polarity, signal induction device 100 is either arranged on the effective angle β in Fig. 8 (b) above excitation brush motor to be measured It is interior, or in effective angle β below excitation brush motor to be measured, signal induction device 100 obtains the first induced voltage letter Number and the polarity of the second induced voltage signal be all identical.

If on the basis of above-mentioned Fig. 7 (a), only changing the armature polarity of excitation brush motor, shown in such as Fig. 9 (a), pressing Learnt according to Left Hand Rule, now the excitation brush motor is also reversion counterclockwise.In this case, excitation brush motor Be powered formed magnetic field will as shown in Fig. 9 (b), if signal induction device 100 is arranged at Fig. 9 (b) position P1, acquisition The first induced voltage signal U1 (t) oscillograms triggered by armature field and the second induced voltage triggered by stator excitation magnetic field It is negative voltage signal shown in signal U2 (t) oscillograms such as Fig. 9 (c)；If signal induction device 100 is arranged on into Fig. 9's (b) At the P2 of position, the first induced voltage signal U1 (t) oscillograms triggered by armature field of acquisition and drawn by stator excitation magnetic field It is positive voltage signal shown in second induced voltage signal U2 (t) oscillograms such as Fig. 9 (d) of hair.As can be seen here, in Fig. 7 (a) On the basis of, after the energization polarity for only changing armature, signal induction device 100 is either arranged on excitation to be measured in Fig. 9 (b) In effective angle β above brush motor, or in effective angle β below excitation brush motor to be measured, induction of signal It is all identical that device 100, which obtains the first induced voltage signal and the polarity of the second induced voltage signal,.

Understood based on the above-mentioned analysis verification process to different types of brush motor, if DC permanent magnet brush to be measured is electric The permanent magnet polarity arrangement of motivation and armature energization polarity such as Fig. 4 (a) are shown, or excitation brush motor to be measured connects positive Stator excitation and armature polar alignment such as Fig. 7 (a) are shown after electric current, and the correct steering of brush motor to be measured is clockwise, inspection The polarity of the first induced voltage signal triggered by armature field measured and the second sensing triggered by corresponding stator field The polarity of voltage signal must be opposite；And when brush motor to be measured be mistake steering counterclockwise, detect by armature magnetic The polarity and the polarity of the second induced voltage signal triggered by corresponding stator field for the first induced voltage signal that field is triggered Must be identical.So, the control circuit of the application is receiving the first induced voltage signal of signal induction device transmission and the After two induced voltage signals, can by judging the polar relationship of first induced voltage signal and the second induced voltage signal, As polarity is identical or on the contrary, according to above-mentioned steering judgment rule, determine brush motor to be measured works as front steering.

It should be noted that for permanent magnet quantity or stator excitation number of pole-pairs in brush motor to be measured, not Above-mentioned a pair enumerated are confined to, can be multipair.When it includes multipair permanent magnet or multipair stator excitation logarithm, its The specific detection process turned to and the above-mentioned DC permanent magnet brush motor to be measured with a pair of permanent magnets or above-mentioned have one Corresponding detection process to the excitation brush motor of excitation pole is similar, and the application will not be described in detail herein.

Further, since the permanent magnet polarity arrangement of different types of DC permanent magnet brush motor to be measured and armature energization pole Character state can be different, and the magnet exciting coil and armature of different types of excitation brush motor to be measured lead to electropolar ordered state Also can be different, and (DC permanent magnet brush motor i.e. to be measured or excitation to be measured have brush electricity to the brush motor to be measured of respective type Motivation) correct steering can be it is clockwise turn to can also be it is counterclockwise turn to, so, it is determined that the to be measured of respective type has Brush motor when front steering be it is clockwise turn to or turn to counterclockwise after, can also have brush electricity by the standard specimen with corresponding types The steering rule of motivation is contrasted, with judge the brush motor to be measured obtained when whether front steering is correct steering.

Therefore, the application can be by sampling to standard specimen brush motor, method according to the above analysis, it is determined that and depositing Store up the polarity of its first induced voltage signal as caused by armature field and the second induced voltage signal as caused by stator field Combined result and its corresponding steering, realize the application is obtained in the manner described above brush motor to be measured when front steering Determine whether.

Furthermore, it is necessary to explanation, for the detection of excitation brush motor, if having in the excitation to be measured shown in Fig. 7 (a) The direct current of brush motor turn-on reversal, shown in such as Figure 10 (a), using above-mentioned identical analysis method, the excitation to be measured has brush The steering of motor is still clockwise, and further analysis is available connects positive direct current with the excitation brush motor to be measured Identical turn to correctness result of determination, i.e., for same tested excitation brush motor, at the same change armature with And the polarity of the power supply of stator exciting coil does not influence steering to sentence method for distinguishing and result.

Further illustrate, if connecting alternating current, the armature of generation in the excitation brush motor to be measured exemplified by Fig. 7 (a) Magnetic field and setting signal induction installation in effective search coverage in stator excitation magnetic field, to obtain the armature magnetic at its position The second induced voltage signal U2 (t) that the first induced voltage signal U1 (t) and stator excitation magnetic field that field is triggered trigger, such as schemes Shown in 11 (a), U1 (t) is anti-phase with U2 (t)；Handed over if being connected in the excitation brush motor to be measured exemplified by Fig. 8 (a), Fig. 9 (a) Stream electricity, the first induced voltage signal U1 (t) and stator excitation magnetic that the armature field where obtaining it at same position triggers The second induced voltage signal U2 (t) that field is triggered, as shown in Figure 11 (b), the same phases of U1 (t) and U2 (t).

In summary, the application having by the armature field that produces after brush motor to be measured energization and stator field Setting signal induction installation in search coverage is imitated, to obtain the first induced voltage letter that the armature field at its position triggers Number and the second induced voltage signal for triggering of stator field so that control circuit utilizes first induced voltage signal and the The polarity or phase order relation of two induced voltage signals, judge to advise according to the steering of the brush motor to be measured for the respective type that prestores Then, the brush motor to be measured is determined when front steering and is exported, simultaneously, additionally it is possible to which the standard specimen using the respective type prestored has brush The steering rule of motor, judges brush motor to be measured that the application determines in the manner described above when whether front steering is correct Turn to, so that testing staff learns being required when whether front steering meets its steering for the brush motor to be measured.

As can be seen here, the application only sets detecting system in brush motor surrounding space to be measured, you can detect that this is to be measured Brush motor works as front steering, and detection process is simple, and in the absence of Mechanical Contact and wear problem, and detecting system structure is simple It is single, it is easy to accomplish, moreover, the steering that this detection method that the application is provided can be applied to DC permanent magnet brush motor is examined Survey, the steering that can be also applied to excitation brush motor is detected, very useful.

, as shown in figure 12, specifically can be with for the control circuit 200 in above-described embodiment as another embodiment of the application Including：First signal processing circuit 210, secondary signal process circuit 220, judging circuit 230, memory 240 and controller 250, wherein：

Include the first magneto sensor 110 and the second magneto sensor 120 the two magneto sensors in signal induction device 100 In the case of, the first signal processing circuit 210 can be connected with the first magneto sensor 110, for sending out first magneto sensor 110 The first induced voltage signal sent is handled, and such as noise reduction, amplification processing, the application are not construed as limiting to this, can be according to reality It needs to be determined that.

Similarly, secondary signal process circuit 220 can be connected with the second magneto sensor 120, for second magnetosensitive member The second induced voltage signal that part 120 is sent is handled, the application to the specific processing method of the second induced voltage signal not It is construed as limiting.

Optionally, can be by first when signal induction device 100 only includes the 3rd this magneto sensor of magneto sensor Signal processing circuit 210 and secondary signal process circuit 220 are connected with the 3rd magneto sensor, for sending out the 3rd magneto sensor The first induced voltage signal sent and the second induced voltage signal carry out respective handling, process and above-mentioned signal induction device 100 Example including two magneto sensors is similar, and the application is not described further to this.

Judging circuit 230 can connect with above-mentioned first signal processing circuit 210 and secondary signal process circuit 220 respectively Connect, receive after the first induced voltage signal and the second induced voltage signal after the processing that two process circuits are sent, can be with Direct Recognition goes out the polarity of the two induced voltage signals, is positive voltage signal or negative voltage signal, for the first sensing Voltage signal can determine its polarity by recognizing its wave head part.Wherein, with the excitation brush motor of AC-powered In detection process, the judging circuit 230 can also recognize the phase sequence of the two induced voltage signals.

Controller 250 can be connected with the judging circuit 230 and memory 240, be believed using the first induced voltage of determination Number (it is to by exchanging with the polar relationship of the second induced voltage signal (i.e. polarity identical or opposite polarity) or phase order relation The phase order relation using two induced voltage signals is needed in the detection of the excitation brush motor of electricity power supply), according to from storage The steering judgment rule for the brush motor to be measured that device 240 is obtained, determines the front steering of working as of the brush motor to be measured, i.e. up time Pin is turned to or turned to counterclockwise, and then the steering rule of the standard specimen brush motor prestored using the memory 240, judges to obtain The brush motor to be measured when front steering whether be correct turn to.

Wherein, the controller 250 implements the description that process can refer to above-described embodiment corresponding part, the present embodiment It will not be repeated here.

Optionally, in actual applications, above-mentioned each circuit in control circuit 200 can be arranged in same housing, Now control circuit 200 is realized as an autonomous device and is connected with other devices realization in detecting system；Certainly, the control Each circuit in circuit 200 can be divided into multiple individual components, and connecting components as needed are to realize difference in functionality, to this The application is no longer described in detail one by one herein.

In summary, the application is by the way that signal induction device to be arranged on to the correct position of brush motor to be measured, detection When the brush motor to be measured is powered, its armature triggers and is diffused into the armature field of the brush motor ambient envelope to be measured, And stator permanent magnet or stator exciting coil trigger and be diffused into the magnetic field of the brush motor ambient envelope to be measured, so as to obtain Two induced voltage signals must be triggered by the armature field and corresponding stator permanent magnet magnetic field or stator excitation magnetic field respectively, utilized The two induced voltage signals realize the steering detection of brush motor to be measured, and need not set grating encoder, simplify Detection process, and be not present because of the mechanical wear that the roller of grating encoder is contacted and produced with brush motor axle to be measured.

Optionally, for the various embodiments described above, in actual applications, the application provide detecting system in each device or Circuit can be arranged in same housing；It can also be independently arranged in different housings, now, staff can be according to reality Detection needs, and by wire or other communication modes, sets the annexation of the device or circuit, and determine the installation of each device Position, flexibly and conveniently.

Based on this, as a kind of embodiment of the application, signal induction device 100 and control circuit 200 can be arranged on In same housing, it may be necessary to it is integrated on a circuit board, but be not limited thereto.In this case, the application is provided Detecting system can by external equipment (such as computer equipment) carry out triggering control, specifically, the detecting system may be used also With including being arranged in the housing, 200 telecommunication circuit is connected with control circuit, user by operating external equipment so that External equipment sends triggering command by the telecommunication circuit to control circuit, and then control circuit 200 is triggered the induction of signal Device 100 enters working condition；The judged result and brush motor to be measured 400 obtained simultaneously for control circuit 200 is worked as Front steering, can also be sent to the external equipment by the telecommunication circuit, be directly displayed by external circuit or reported testing result.

Wherein, above-mentioned telecommunication circuit can include I/O (input/output) bus, or other wire communication modules or nothing Line communication module etc., to realize the information exchange between control circuit and external equipment.The application is to the telecommunication circuit bag The concrete structure contained is not construed as limiting.

In addition, above-mentioned telecommunication circuit may be embodied in control circuit, it is of course also possible to be arranged on as independent circuit State in housing, the application is not construed as limiting to its set location, and in the telecommunication circuit Figure of description and being not drawn into, can be with Foregoing description is combined according to actual needs, the annexation of the telecommunication circuit in different embodiments is determined, the application is herein not An another explanation.

In addition, for said external equipment, in addition to can be by controlling the work of circuit trigger signal induction installation, may be used also Powered using triggering electric supply installation as brush motor to be measured, that is to say, that the external equipment can also connect with electric supply installation 300 Connect, as shown in figure 13, user's operation external equipment, by controlling the trigger switch circuit 500 of circuit 200 to enter working condition, is opened Move brush motor 400 to be measured to operate, afterwards, by controlling the trigger signal induction installation 100 of circuit 200, in the manner described above Detection work is proceeded by, specific detection process will not be repeated here.

Optionally, reference picture 2 and Fig. 3, the application detecting system can also include the signal output being arranged in housing Circuit 600, the judged result obtained by the direct output control circuit 200 of the signal output apparatus 600 and it is to be measured have brush electricity Motivation 400 when the information such as front steering.In practical application, the signal output apparatus 600 can be integrated in control circuit 200, It can also be used as an autonomous device, outside the housing as where being arranged on signal induction device 100 and control circuit, work Principle is similar, facilitates staff to learn the testing result to brush motor to be measured by the signal output apparatus 600.

In this application, above-mentioned signal output apparatus 600 can be specifically display and/voice device etc., it is determined that Brush motor to be measured when front steering and its after whether be the judged result correctly turned to, these can be believed by display Breath is shown, can also be played back these information by voice device, so that testing staff judges that this to be measured has accordingly Whether brush motor meets the steering requirement of the default brush motor to be measured when front steering.

In addition to the above-mentioned display enumerated or report mode, can also be represented by different indicator lamps it is various steering with And the information such as judged result, detect in the manner described above after above- mentioned information, by controlling corresponding indicator lamp to light, to inform Testing staff's testing result, naturally it is also possible to substitute indicator lamp using suggestion devices such as the buzzers that can send alternative sounds Etc., the application is no longer described in detail one by one herein.

As can be seen here, the application is not construed as limiting to the particular circuit configurations of above-mentioned signal output apparatus 600, that is to say, that For whether dc motor to be measured obtained above is when front steering and its be the defeated of the information such as the judged result that correctly turns to Go out mode to be not construed as limiting

It is unlike the embodiments above as the another embodiment of the application, signal induction device 100 and control circuit 200 can be arranged in two separate first shell bodies, and be both provided with corresponding communication in vitro in each first shell Port, connection between each device or circuit is realized will pass through the COM1.Or, above-mentioned first magneto sensor 110, Two magneto sensors 120 and control circuit 200 can be separately positioned in three independent second shell bodies.As can be seen here, signal The first magneto sensor 110 and the second magneto sensor 120 in induction installation 100 can be arranged in same housing or In different housings, used as autonomous device, the installation site of convenient each magneto sensor of setting.

Moreover, on the basis of above-described embodiment, the detecting system that the application is provided can also include signal output apparatus 600, now, signal output apparatus 600 as described above is similar with the position relationship of other devices, can specifically be arranged on control In housing where circuit 200 processed；Or can be arranged on and be different from the 3rd housing of said first shell and the second housing, I.e. as autonomous device, the judged result that is obtained for output control circuit 200 and brush motor to be measured work as front steering Etc. information.Concrete structure on the signal output apparatus 600 is referred to the description of above-described embodiment corresponding part, this implementation Example will not be described in detail herein.

As the another embodiment of the application, on the basis of above-described embodiment, in order to realize the output to testing result with And the flexible control to detecting system, the application can also by external equipment respectively with control circuit 200, electric supply installation 300 with And on-off circuit 500 sets up communication connection, reference picture 13, so that user is by operating external device start electric supply installation to be to be measured Brush motor is powered, and trigger signal induction installation 100 proceeds by detection, and detailed process is referred to above-described embodiment pass In the associated description of external equipment, the present embodiment will not be repeated here.

Wherein, when each magneto sensor in signal induction device 100 is as autonomous device, it is arranged in different housings In embodiment, the ambient envelope diverse location of brush motor to be measured according to actually detected needs, can be placed on, for respectively Stator field and armature field are detected, specific detection content is referred to the description of above-mentioned appropriate section.It should be noted that The application determines the installation site of each magneto sensor, not limited to facilitate installation and can detect useful signal as principle In the position shown in Figure of description.

In addition, for the electric supply installation 300 in the various embodiments described above and on-off circuit 500, can also be arranged on same In housing, accompanying drawing is simultaneously not drawn into corresponding construction；Can also be with controlling circuit 200, signal output apparatus 600 etc. to be arranged on same shell In vivo, used as an integral device, now, signal induction device 100 can be used as autonomous device, to be put Put and carry out signal detection in place, as shown in figure 14.It should be noted that the structure for the detecting system that the application is provided Several attachment structures that accompanying drawing is provided are not limited to, can be met what is be actually needed according to foregoing description, flexible combination Various detecting system structures, belong to the application protection domain, and the application will not enumerate herein.

As the another embodiment of the application, what the application can also be obtained in control 200 pair of first sensing element 110 of circuit The second induced voltage signal that first induced voltage signal and the second sensing element are obtained (or controls circuit 200 after handle After having handled first the second induced voltage signal of induced voltage signal that the 3rd magneto sensor is obtained), directly by after processing First induced voltage signal and the second induced voltage signal are sent directly to signal output apparatus or external equipment output, so that Testing staff intuitively learns the polar relationship of first induced voltage signal and the second induced voltage signal, and then has according to be measured The steering judgment rule of brush motor, i.e., the polar relationship of two induced voltage signals and the corresponding relation turned to, it is determined that this is treated Survey brush motor and work as front steering, and then compared by the steering rule with standard specimen brush motor, verify that this to be measured has brush Motor when front steering whether be correct turn to.

In addition, on the basis of above-described embodiment, the application can also be set on the circuit board where control circuit 200 Various cue circuit and external plug-in component ports, control circuit 200 obtain brush motor to be measured when front steering and judge Deserve after whether front steering be the judged result correctly turned to, different cues can also be exported by cue circuit to represent These information.

Optionally, cue circuit can include multiple indicator lamps, and the application can represent a kind of letter using an indicator lamp Breath, or different information etc. are represented by the different conditions of indicator lamp, the application is not construed as limiting to this.

Similarly, if the cue circuit includes buzzer, alternative sounds can also be sent by it to represent different information, this Apply being not construed as limiting the specific prompting mode that suggestion device provides the information that user currently controls circuit 200 to obtain.

Optionally, the application can also realize the prompt facility to testing result by the cue circuit in external equipment, Prompting mode and the description with reference to above-mentioned cue circuit.

On the basis of the various embodiments described above, as shown in figure 14, the detecting system that the application is provided can also include：Bottom plate 700 and support 800, wherein：

Support 800 may be mounted on bottom plate 700, and brush motor 400 to be measured can be arranged on into the support 800 On, signal induction device 100 can be arranged on bottom plate 700, it is necessary to illustrate, when installing the signal induction device 100, Need to meet the status requirement of foregoing description, that is, be located at armature field and stator field after brush motor to be measured is powered Effective search coverage in, specifically can be located at apart from the preset range of brush motor surface first to be measured, and with it is to be measured The permanent magnet of brush motor or the radially line of stator exciting coil are into first angle, and the first angle has less than above-mentioned Angle beta is imitated, specific setting requirements can refer to the description of above-described embodiment corresponding part.

It should be noted that in the application practical application, above-mentioned support 800 is not limited to the installation side shown in Figure 14 Formula, it can arbitrarily be installed according to actual needs, be such as horizontally mounted, installed on vertically-mounted or inclined-plane with arbitrary angle Deng the specific mounting means of the application support 800 is not construed as limiting.Accordingly, the mounting means of brush motor to be measured and outer Shape structure can arbitrarily be adjusted according to the position of the support 800, it is not limited to the mode shown in Figure 14.

In addition, during the application is actually detected, determining signal induction device 100 relative to be measured in the manner described above After the installation site of brush motor 400, in the detection process of the brush motor 400 to be measured, the signal induction device 100 Installation site will immobilize；, can be according to upper after the model or detection environment of brush motor 400 to be measured change Mode is stated, installation site of the signal induction device 100 relative to brush motor to be measured is redefined, afterwards, then started pair The brush motor to be measured is detected, and signal induction device 100 is also changeless in the detection process, so as to ensure To the reliability and accuracy of the testing result of brush motor 400 to be measured.

Finally, it is necessary to illustrate, in the various embodiments described above, such as first, second or the like relational terms are only Only it is used for making a distinction an operation or entity with another operation or entity, is closed in order to describe the course of work or connection System, and not necessarily require or imply between these entities or operation there is any this actual relation or order.

The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other Between the difference of embodiment, each embodiment identical similar portion mutually referring to.

This specification is for the ease of description, for the detection of DC permanent magnet brush motor, only with a pair of magnetic Analyzed exemplified by the DC permanent magnet brush motor of pole and a pair of carbon brush structures, based on similar operation principle, the application Steering detection can also be carried out to the DC permanent magnet brush motor of multipair magnetic pole and multiple carbon brush structures, herein no longer one by one Enumerate.Similarly, for the detection of excitation brush motor, also only analyzed exemplified by with a pair of excitation magnetic numbers of poles, Detection and analysis process for multipair excitation magnetic number of poles is similar, and this is also no longer described in detail the application one by one.

The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use the application. A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein General Principle can in other embodiments be realized in the case where not departing from spirit herein or scope.Therefore, the application The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one The most wide scope caused.

Claims

1. a kind of detecting system of brush motor, it is characterised in that the system includes：Signal induction device, control circuit And electric supply installation, wherein：

The signal induction device is arranged on effective search coverage of the brush motor to be measured, obtains the electricity at position The second induced voltage signal that the first induced voltage signal and stator field that pivot magnetic field is triggered trigger, effective detecting area Domain surrounding space is produced after the brush motor energization to be measured armature field and stator field are determined；

The control circuit is connected with the signal induction device and the signal output apparatus respectively, utilizes described the of acquisition The characteristic relation of one induced voltage signal and second induced voltage signal, according to turning for the brush motor to be measured that prestores To judgment rule, determine that the brush motor to be measured works as front steering, and utilize the steering rule of the standard specimen brush motor prestored Then, judge the brush motor to be measured when front steering whether be it is correct turn to, obtain judged result and described to be measured have brush Motor works as front steering；

2. system according to claim 1, it is characterised in that

When the brush motor to be measured is DC permanent magnet brush motor, the stator field is specially stator permanent magnet magnetic , first induced voltage signal and the characteristic relation of second induced voltage signal that the control circuit is obtained are specific For first induced voltage signal and the polar relationship of second induced voltage signal；

When the brush motor to be measured is excitation brush motor, the stator field is specially stator excitation magnetic field, institute State first induced voltage signal of control circuit acquisition and the characteristic relation specially institute of second induced voltage signal State the polarity or phase order relation of the first induced voltage signal and second induced voltage signal.

3. system according to claim 1, it is characterised in that the signal induction device includes：Make magnetic induction direction into The first magneto sensor and the second magneto sensor that first angle is set, wherein：

The central shaft of the brush motor to be measured is pointed in the magnetic induction direction of first magneto sensor, is obtained at position Armature field trigger the first induced voltage signal；

Second magneto sensor obtains the second induced voltage signal that the stator field at position triggers.

4. system according to claim 1, it is characterised in that the signal induction device includes：3rd magneto sensor；

The magnetic induction direction of 3rd magneto sensor and the central shaft of the brush motor to be measured are into second angle, and described the Two angles are not equal to 0 degree, 90 degree, 180 degree and 270 degree.

5. system according to claim 3, it is characterised in that the control circuit includes：First signal processing circuit, Binary signal process circuit, judging circuit, memory and controller, wherein：

First signal processing circuit is connected with first magneto sensor, the secondary signal process circuit and described second Magneto sensor is connected；

The judging circuit is connected with first signal processing circuit and the secondary signal process circuit respectively, identifying processing The first induced voltage signal afterwards and the polarity or phase sequence of the second induced voltage signal；

The controller is connected with the memory and the judging circuit respectively, using acquisition the first induced voltage signal with The polarity or phase order relation of second induced voltage signal, according to the brush motor to be measured obtained from the memory Steering judgment rule, determine that the brush motor to be measured works as front steering, and have using the standard specimen obtained from the memory Whether the steering rule of brush motor, it is correct turn to when front steering to judge the brush motor to be measured.

6. system according to claim 5, it is characterised in that the signal induction device and the control circuit are arranged on In same housing, the system also includes：

It is arranged in the housing, the telecommunication circuit being connected with the control circuit, the telecommunication circuit sends external equipment Triggering command transmit to the control circuit so that the control circuit triggers the signal induction device and enters work shape State；And control obtained judged result and the brush motor to be measured to be set when front steering is sent to the outside by described It is standby；

Or, the signal output apparatus in the housing is arranged on, the judged result that the control circuit is obtained is obtained and export And the brush motor to be measured works as front steering.

7. system according to claim 5, it is characterised in that the signal induction device is arranged on the control circuit In two separate first shell bodies, or, first magneto sensor, second magneto sensor and control electricity Road is separately positioned in three independent second shell bodies；The system also includes signal output apparatus, wherein：

The signal output apparatus is arranged on where the control circuit in first shell body, or is arranged on and is different from described first In 3rd housing of housing and second housing, export the obtained judged result of control circuit and described to be measured have brush Motor works as front steering.

8. the system according to claim 6 or 7, it is characterised in that the system also includes：

On-off circuit, so that the electric supply installation is connected by the on-off circuit with the brush motor to be measured, controls institute State the break-make between electric supply installation and the brush motor to be measured.

9. system according to claim 6, it is characterised in that the system also includes：Cue circuit, wherein：

The cue circuit is turned to for the different of the brush motor to be measured, and judges that the brush motor to be measured is worked as The whether correct different judged results of front steering, export corresponding prompt message.

10. the system according to claim 6 or 7, it is characterised in that the signal output apparatus includes：Display and/or Speech player.