CN204330852U - Can sensed position change electrical measurement - Google Patents
Can sensed position change electrical measurement Download PDFInfo
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- CN204330852U CN204330852U CN201420769976.0U CN201420769976U CN204330852U CN 204330852 U CN204330852 U CN 204330852U CN 201420769976 U CN201420769976 U CN 201420769976U CN 204330852 U CN204330852 U CN 204330852U
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Abstract
This application discloses a kind of can sensed position change electrical measurement.This electrical measurement comprises: fuselage; Acceleration transducer, it is connected to fuselage, for detecting the acceleration of fuselage to generate the detection signal representing described acceleration; And Signal Processing Element, it is couple to acceleration transducer to receive detection signal, and described Signal Processing Element is configured to generate one or more control signal according to detection signal.For electrical measurement of the present utility model, its can utilize the acceleration transducer on fuselage to sense fuselage motion and/or towards, and then according to the motion of fuselage and the operation controlling electrical measurement towards situation.Under a lot of application scenario, the above-mentioned control mode user that is more convenient for uses this electrical measurement.
Description
Technical field
The utility model relates to electronic measurement technique, more specifically, relate to a kind of can sensed position change electrical measurement.
Background technology
The various measurement mechanism for measuring electrical quantity (such as voltage, electric current and impedance) is widely used in commercial production and daily life.Namely multimeter is a kind of typical electrical parameter measuring device, and it mainly can measure interchange or DC voltage, electric current and impedance.Typical multimeter generally includes fuselage and a pair p-wire, wherein the test test pencil of each p-wire one end is connected to Devices to test or device, the other end is then inserted into the corresponding jack of multimeter fuselage, thus the metering circuit of this Devices to test with multimeter fuselage interior is electrically connected.
When using multimeter to measure, operating personnel often need to grip test test pencil to connect Devices to test, and multimeter fuselage is then placed on nigh test board or test desk.In some cases, operating personnel need mobile test test pencil but have forgotten mobile multimeter fuselage, this may cause the tested line of multimeter fuselage pull and fall from test board or test desk, thus causes p-wire to come off from the jack of fuselage, is separated with fuselage.P-wire is separated the loss that may cause measurement result with fuselage.
Therefore, need to provide a kind of electrical measurement that can solve the problem.
Utility model content
An object of the present utility model be to provide a kind of can the electrical measurement of sensed position change, this electrical measurement can adjust measurement or other operations according to the change in location situation of fuselage.
Disclose in one of the present utility model a kind of can sensed position change electrical measurement.This electrical measurement comprises: fuselage; Acceleration transducer, it is connected to described fuselage, for detecting the acceleration of described fuselage to generate the detection signal representing described acceleration; And Signal Processing Element, it is couple to described acceleration transducer to receive described detection signal, and described Signal Processing Element is configured to generate one or more control signal according to described detection signal.
Can find out, for electrical measurement of the present utility model, its can utilize the acceleration transducer on fuselage to measure fuselage motion and/or towards, and then according to detected fuselage moving situation and/or towards the operation controlling electrical measurement.Under a lot of application scenario, the above-mentioned movement control mode user that is more convenient for uses this electrical measurement.
In certain embodiments, described fuselage is provided with one or more jack, is connected to the metering circuit in described fuselage by described jack one or more test test pencil.
In certain embodiments, described acceleration transducer is configured to respond to the free-falling of described fuselage and generates the first detection signal; Described Signal Processing Element is configured to generate the first control signal according to described first detection signal; Described metering circuit comprises sample circuit, it is couple to described test test pencil and described Signal Processing Element, and described first control signal be configured to according to receiving from described signal processing circuit samples to obtain sampled signal to the device under test being couple to described test test pencil; Described metering circuit is configured to process described sampled signal, to obtain measurement result.Like this, the burst that this electrical measurement can detect fuselage is moved, thus avoids or reduce some of fuselage burst is mobile causing measurement result to be lost.
In certain embodiments, described electrical measurement also comprises storer, and it is couple to described metering circuit, is configured to receive and stores described measurement result.
In certain embodiments, described Signal Processing Element is configured to the acceleration of described fuselage or its change to compare with predetermined threshold or predetermined curve, and generates described control signal.
In certain embodiments, described acceleration transducer comprises two or more detection axis to obtain the detection signal of the acceleration be associated from different detection axis, and described Signal Processing Element is further configured to the acceleration be associated from different detection axis or its to change and compares with predetermined threshold or predetermined curve, and generates different control signals.
In certain embodiments, described acceleration transducer comprises two or more detection axis to obtain representing the second detection signal of the linear acceleration comprised along different detection axis, and described Signal Processing Element be further configured to according to described second detection signal determine described fuselage towards, and according to by the fuselage determined towards generation second control signal.
In certain embodiments, two or more detection axis described comprise two or three mutually orthogonal detection axis.
In certain embodiments, described acceleration transducer detects along the linear acceleration of two or more detection axis described and/or the angular acceleration around two or more detection axis described.
In certain embodiments, described electrical measurement also comprises display unit, it is couple to described Signal Processing Element to receive described second control signal, and described display unit is configured to the direction of the user interface changing display on it according to described second control signal.
In certain embodiments, described Signal Processing Element comprises: amplifying circuit, and it is couple to described acceleration transducer, and is configured to adjust and amplifies the detection signal that described acceleration transducer provides; Sample circuit, it is couple to described amplifying circuit, for through to adjust and the detection signal amplified is sampled and generated acceleration sampled signal; Computing unit, it is couple to described sample circuit, for receiving described acceleration sampled signal, and generates control signal based on described acceleration sampled signal; Control module, it is couple to described computing unit, for receiving described control signal from described computing unit, and controls according to the parts of described control signal to electrical measurement.
In certain embodiments, described Signal Processing Element also comprises comparator circuit, and it is coupled between described amplifying circuit and described computing unit, for to be adjusted and the detection signal amplified and predetermined threshold compare.
In certain embodiments, described acceleration transducer is arranged on the centre of gravity place of described fuselage.
In certain embodiments, described electrical measurement also comprises input block, described functional switch signal is also supplied to described Signal Processing Element by the functional switch signal that described input block receives operating personnel's input, and described Signal Processing Element is configured to start according to described function switching signal or close to the reception of described detection signal and generates described one or more control signal.
In certain embodiments, described electrical measurement is digimer.
In certain embodiments, described electrical measurement is pincerlike meter, and wherein said pincerlike meter has current transformer and metering circuit, and described current transformer to be arranged on described fuselage and the metering circuit be connected in described fuselage.Alternatively, the fuselage of described pincerlike meter is also provided with one or more jack, is connected to the metering circuit in described fuselage by described jack one or more test test pencil.
Be more than the general introduction of the application, the situation of simplification, summary and omissions of detail may be had, therefore those skilled in the art will appreciate that this part is only Illustrative, and be not intended to limit the application's scope by any way.This overview section is the key feature of not intended to be determination claimed subject or essential feature both, and also not intended to be is used as the supplementary means of the scope determining claimed subject.
Accompanying drawing explanation
Be combined with accompanying drawing by following description and appending claims, the above and other feature understanding teachings herein will be known more fully.Be appreciated that these drawings depict only some embodiment of teachings herein, therefore should do not think the restriction to teachings herein scope.By adopting accompanying drawing, teachings herein will obtain definitely and explain.
Fig. 1 shows the external structure schematic diagram of the electrical measurement 100 according to the application's embodiment;
Fig. 2 shows an embodiment of the circuit block diagram of the electrical measurement 100 of Fig. 1;
Fig. 3 shows the exemplary circuit diagram of Signal Processing Element in the electrical measurement 100 of Fig. 2.
Embodiment
In the following detailed description, with reference to the accompanying drawing forming its part.In the accompanying drawings, the ingredient that similar symbol ordinary representation is similar, unless otherwise indicated by context.The illustrated embodiment describe in detail, described in accompanying drawing and claims not intended to be limit.When not departing from the spirit or scope of theme of the application, other embodiments can be adopted, and other changes can be made.Be appreciated that and can carry out multiple differently composed configuration, replacement, combination, design to the various aspects of general teachings herein that describe, graphic extension in the accompanying drawings herein, and all these forms a part for teachings herein clearly.
Fig. 1 shows the external structure schematic diagram of the electrical measurement 100 according to the application's embodiment.It should be noted that, in the embodiment shown in fig. 1, electrical measurement 100 is constructed to digimer.In other embodiments of the application, electrical measurement 100 also can be constructed to pincerlike meter or other Portable electrical measurement devices.
As shown in Figure 1, this electrical measurement 100 comprises fuselage 102.Fuselage 102 has digital display unit 104, manually can operation push-button 106 and pattern rotary switch 108.This pattern rotary switch 108 may be used for the measurement pattern arranging electrical measurement 100, such as, be measuring resistance.Other input blocks except button 106 and rotary switch 108 can be used, such as touch-screen or touch pad.This electrical measurement 100 also comprises a pair p-wire 110,112, and it has plug 116 and 118 respectively.These two plugs 116 and 118 are inserted in the jack 120,122 on electrical measurement 100 fuselage 102, and connect two electrical lead contact input (not shown in figure 1)s of electrical measurement 100 internal measurement circuit 140 respectively.Jack 124 and 126 may be used for inserting in plug 116 or 118, carries out resistance measurement, current measurement, voltage measurement or other electric parameter measurements with the selection of matching model rotary switch 108.P-wire 110 and 112 also has the first test test pencil 130 and the second test test pencil 132 respectively, and it connects the test point 136 and 138 on device under test 134 respectively, is connected to internal measurement circuit 140 to make device under test 134 by p-wire 110 and 112.Such as, when measuring the internal resistance of battery, measuring current can be applied on the positive and negative electrode of tested battery by these two test test pencils by electrical measurement 100.These two test test pencils can also gather the voltage difference between the positive and negative electrode of tested battery, thus can calculate the resistance determining tested battery.Electrical measurement 100 can also comprise Signal Processing Element (not shown), and this measurement data is presented at display unit 104 for controlling by it, thus is prompted to the personnel of operation electrical measurement 100.Be appreciated that the above-mentioned description constructed about electrical measurement 100 be exemplary and and nonrestrictive, those skilled in the art can according to practical application need various amendment or replacement are carried out to the structure of electrical measurement 100 and structure.
Electrical measurement 100 also comprises acceleration transducer 150, and it is connected to fuselage 102, such as, be arranged on fuselage interior regularly, or is arranged on other appropriate locations be connected with fuselage 102.Acceleration transducer 150 is connected with fuselage 102, and it can move along with fuselage 102, and detects the acceleration of fuselage 102, this acceleration be associated with fuselage 102 motion and/or towards.By means of the acceleration transducer on fuselage 102, electrical measurement 100 can sense himself change in location, the motion state (such as Linear-moving or rotation) of such as fuselage and/or fuselage towards.In some embodiments, acceleration transducer 150 is arranged on the center of gravity place of fuselage 102 or the position near fuselage 102 center of gravity, this can reduce or be avoided fuselage 102 to rotate (angular acceleration) to move the impact detected for acceleration transducer 150, particularly when not detection angle acceleration.
Electrical measurement in the application can use any applicable acceleration transducer, such as, on market obtainable commercial acceleration transducer product.In some embodiments, acceleration transducer 150 is single-axis acceleration sensors.In some embodiments, described single-axis acceleration sensors can detect acceleration of gravity, thus responds to the motion that described electrical measurement falls under gravity downwards.
In some embodiments, acceleration transducer 150 is the multi-shaft acceleration transducer such as diaxon, three axles.For two axle acceleration sensors, it has two mutually orthogonal detection axis, vertical direction (fore-and-aft direction along shown in Fig. 1) when one of them detection axis (assuming that this detection axis is z-axis) can be in normal laying state (user interface that such as display unit 104 shows and plane-parallel) with fuselage 102 overlaps substantially, and another detection axis (assuming that this detection axis is x-axis) is in horizontal direction, such as, along above-below direction or the left and right directions of the fuselage 102 shown in Fig. 1.Diaxon or 3-axis acceleration sensor may be used for measuring the linear acceleration along each detection axis.When two axle acceleration sensors 150 measure the acceleration of fuselage 102 motion, measured acceleration can have two components in x-axis and z-axis, and these two components show respectively the projection vector value of fuselage 102 acceleration of motion in x-axis and z-axis.For 3-axis acceleration sensor, it has three mutually orthogonal detection axis, vertical direction when one of them detection axis (assuming that this detection axis is z-axis) can be in normal laying state with fuselage 102 overlaps substantially, the plane that another two detection axis (assuming that these two detection axis are x-axis and y-axis) are formed is then substantially parallel with surface level, wherein x-axis is the above-below direction shown in Fig. 1, and y-axis is the left and right directions shown in Fig. 1.Similarly, when 3-axis acceleration sensor 150 measures the acceleration of fuselage 102 motion, measured acceleration can have the component on x-axis, y-axis and z-axis three directions, these three components represent respectively fuselage 102 along the vertical direction, the linear acceleration of left and right directions and fore-and-aft direction, and the vector of these three components illustrates the acceleration of fuselage 102.It will be understood by those skilled in the art that acceleration transducer 150 also can measure the angular acceleration of fuselage 102 around some detection axis.Such as, acceleration transducer 150 can be 6 axle acceleration sensors, and it can detect along the linear acceleration of three detection axis and the angular acceleration around three detection axis.
Can find out, when acceleration transducer 150 has two or three detection axis, when fuselage 102 moves with different directions, acceleration transducer 150 detects the detection signal obtained can be different.For 3-axis acceleration sensor 150, and suppose that z-axis is vertically arranged, and x-axis is arranged along the above-below direction on the surface level vertical with vertical direction, the left and right directions that y-axis goes up along the horizontal plane is arranged.In the case, when fuselage 102 moves along x-axis acceleration level, there is component in detection signal, and be 0 at the component of y-axis in x-axis and z-axis; Wherein the component of x-axis is caused by horizontal accelerated motion, and the component of z-axis produced due to gravity.But when fuselage 102 moves along y-axis acceleration level with identical velocity amplitude, there is component in detection signal, and the component in x-axis is 0 in y-axis and z-axis.
Except detecting the acceleration that fuselage 102 moves, acceleration transducer 150 can also detect fuselage 102 such as, towards angle relative to vertical direction or surface level of, fuselage 102.Such as, when fuselage 102 is positioned horizontally on worktable, the acceleration of gravity that acceleration transducer 150 detects is substantially along z-axis, and the component in x-axis and/or y-axis is 0.Again such as, when fuselage 102 by front and back turn over turnback place on the table time, the acceleration of gravity that acceleration transducer 150 detects is still basic along z-axis, and in x-axis and/or y-axis, still do not have component, but when at this moment the z-axis component of detection signal is normally placed with fuselage 102, the direction of z-axis component is contrary.Again such as, when fuselage 102 is placed on the table around x-axis or y-axis 90-degree rotation, the acceleration of gravity that acceleration transducer 150 detects substantially along x-axis or y-axis, and does not substantially have component in z-axis.Can find out, acceleration transducer 150 along different detection axis accekeration (i.e. detection signal) or along the vector of each detection axis accekeration can reflect fuselage 102 towards.
Electrical measurement 100 can comprise Signal Processing Element, and it is accommodated in fuselage 102, and is couple to acceleration transducer 150 to receive the detection signal representing fuselage acceleration.This Signal Processing Element is configured to generate one or more control signal according to the detection signal of the acceleration of this expression fuselage.These control signals may be used for the operation and the measurement that control electrical measurement 100.Like this, electrical measurement 100 can according to the motion of its fuselage 102 and/or towards automatically changing mode of operation, and without the need to the manual input of control commands of operating personnel.Under some application scenarios, this automatic control mode is more convenient, and can avoid or reduce the mobile impact on measuring of some burst of fuselage 102.Fig. 2 shows the circuit block diagram schematic diagram of the electrical measurement 100 according to the application's embodiment.The process of the signal transacting that electrical measurement 100 is carried out according to detection signal is described further below in conjunction with Fig. 2.
As shown in Figure 2, this electrical measurement 100 comprises acceleration transducer 150, Signal Processing Element 142, metering circuit 140 and storer 146.
Particularly, metering circuit 140 comprises sample circuit 144.This sample circuit 144 is couple to the first test test pencil 130 and second be inserted in fuselage 102 and tests test pencil 132, and by the first test test pencil 130 and the second test test pencil 132 and device under test 134 electric coupling.Sample circuit 144 is configured to sample to obtain sampled signal to device under test 134.Metering circuit 140 can process this sampled signal, to generate measurement result, and this measurement result is supplied to Signal Processing Element 142.In some embodiments, metering circuit 140 can also comprise such as amplifying circuit, integrating circuit, filtering circuit etc., and it can carry out various default signal transacting to sampled signal, to obtain the measurement result reflecting device under test 134 electrical quantity characteristic.Signal Processing Element 142 and metering circuit 140 couple, and receive the measurement result that metering circuit 140 provides, and carry out some signals and/or data processing to this measurement result.In some embodiments, Signal Processing Element 142 is couple to storer 146 further, and it can control measurement result to be stored in storer 146.Signal Processing Element 142 can by supporting that the execution that be stored in programmed instruction in storer 146 is used as the operation of electrical measurement 100, control and computing center.Storer 146 can adopt form that is volatile or nonvolatile memory, such as ROM (read-only memory), random access memory, flash memory or other memory technologies.
As previously mentioned, acceleration transducer 150 can detect the acceleration of fuselage 102, thus generates the detection signal of the acceleration representing fuselage 102.Correspondingly, the detection signal that Signal Processing Element 142 can provide according to acceleration transducer 150 determine fuselage 102 motion and/or towards.In some embodiments, Signal Processing Element 142 can determine the change of fuselage 102 acceleration of motion according to detection signal, this acceleration or its change is compared with predetermined threshold or predetermined curve, and generates control signal.Such as, when fuselage 102 free-falling, the acceleration that acceleration transducer 150 detects static relative to fuselage 102 place time detect acceleration be changed to 1g (g is unit acceleration of gravity).In other words, the acceleration change of 1g can represent that fuselage 102 is in free-falling state usually.Therefore, Signal Processing Element 142 can process to detection signal the change (detection signal under such as itself and fuselage being remained static asks poor) determining the acceleration that fuselage 102 moves, such as, and the acceleration obtain process or its change compare with a predetermined threshold, compare with the threshold value of 0.95g or 0.98g.When fuselage 102 acceleration of motion detected or its change exceed this predetermined threshold, Signal Processing Element 142 can determine that fuselage 102 is in free-falling state, and then generates corresponding control signal.In addition, when fuselage 102 is in different motion states, the acceleration that acceleration transducer 150 detects is usual not identical over time yet.Such as, when fuselage 102 is rocked, the change of acceleration may present specific curve shape.Can store away in advance by curve corresponding to different motion state.Like this, after signal transacting, the detection signal provided by acceleration transducer 150 can compare with these curves that prestores, with determine the acceleration of fuselage or its change with whether with these Curve Matchings that prestores.If with certain Curve Matching that prestores, then can generate corresponding control signal, specifically control for the follow-up operation to electrical measurement.
After signal processing circuit 142 generates control signal according to the first detection signal that the free-falling of induction fuselage generates, this control signal can be supplied to the sample circuit 144 coupled with it by Signal Processing Element 142.According to this control signal, sample circuit 144 can sample to obtain sampled signal to device under test 134.The generation of this control signal and response mode can be avoided effectively because fuselage 102 falls to affecting the problem measured.Particularly, when fuselage 102 pulls because of p-wire or falls from worktable or other positions because of operating personnel or other people collision, acceleration transducer 150 can detect the change of fuselage 102 acceleration of motion immediately.Meanwhile, because fuselage 102 has just started to fall, the speed that fuselage 102 moves is also smaller, and also very little relative to the displacement of original position (such as on worktable), and thus the plug of p-wire is not also separated with the jack on fuselage 102.Therefore, after the control signal of generation is supplied to sample circuit 144 by Signal Processing Element 142, sample circuit 144 has time enough to sample to device under test 134, and the measuring-signal obtained of sampling is supplied to Signal Processing Element 142, to carry out data processing and storage.
Sample circuit 144 can receive the real time analogue signals of the tested electrology characteristic of device under test 134 from test test pencil, and processes received real time analogue signals according to the sample mode preset.In some embodiments, sample circuit 144 carries out sampling and refers to that electrical measurement 100 is under sampling pulse effect, the time that simulating signal (electrical quantity of device under test) continuous in time converted to upper discrete simulating signal, this discrete simulating signal can carry out subsequent treatment (such as amplification, analog to digital conversion etc.) to obtain measurement result by measured circuit 140.
Signal processing circuit 142 can control the signal sampling of device under test 134 according to the detection signal of fuselage motion.Be appreciated that the sampling that sample circuit 144 can also control device under test 134 signal based on other control mode or steering logic.In some embodiments, sample circuit 144 can from Signal Processing Element 142 reception control signal, and determine whether to sample to device under test 134 based on this control signal.Such as, the sample command that Signal Processing Element 142 manually can be inputted by such as input block 106 according to operating personnel generates control signal, and then this control signal is supplied to sample circuit 144, and instruction sample circuit 144 is sampled.In other embodiments, Signal Processing Element 142 can generate control signal according to the control of the automatic sampling process run in electrical measurement 100, and then control signal is supplied to sample circuit 144 to sample.Such as, automatic sampling process can indicate every the control signal of predetermined time interval generation for sampling.The control mode that these control modes and steering logic can detect with motion is collaborative carries out.Similarly, Signal Processing Element 142 can also generate various control signal based on the input of input block 106, and with the miscellaneous part to electrical measurement 100, the such as operation of display unit 104 grade controls.
As previously mentioned, multi-shaft acceleration transducer 150 generate detection signal can reflect fuselage 102 towards.Signal Processing Element 142 can based on this detection signal determination fuselage towards, thus control the display of electrical measurement 100 display unit 104, particularly, change the direction of the user interface that it shows.Like this, user interface all the time can be presented on display unit 104 close to vertical direction (such as with the x-axis direction shown in Fig. 1), thus the user that is more convenient for observes measurement result.Be appreciated that the image wherein shown or the arrangement of word may adjust, to match with the size of display unit 104 after the display direction of user interface changes.
Such as, when fuselage 102 grips with the x-axis direction shown in Fig. 1, the detection signal measured by acceleration transducer 150 such as only has the component of x-axis.In the case, in display unit 104, the user interface direction of display is also downward along the x-axis direction.But, when fuselage 102 is turn 90 degrees to make its display unit 104 on the right side of Fig. 1 by dextrorotation, detection signal measured by acceleration transducer 150 only has the component of y-axis, and what it represented fuselage 102 is oriented y-axis (positive dirction or specifically depend in the other direction the occurrence of this component).In the case, Signal Processing Element 142 can according to detection signal determination fuselage 102 towards, and then generate control signal, this control signal can control the user interface dextrorotation that display unit 104 shown and turn 90 degrees.In actual applications, the concrete accekeration of detection signal (component value in such as y-axis) and a predetermined threshold can compare, to generate control signal after accekeration exceedes predetermined threshold by Signal Processing Element 142.Such as, Signal Processing Element 142 can the predetermined threshold (corresponding to 45 degree) of degree of will speed up y-axis component value and 0.707g compare, generate the control signal of instruction rotator user interface display when y-axis component value is greater than 0.707g, and generate the control signal of instruction non rotating user interface display when y-axis component value is less than or equal to 0.707g.
In some embodiments, when fuselage 102 acceleration of motion or its change exceed predetermined threshold, Signal Processing Element 142 can generate control signal, and this control signal can be associated with some and specifically operate.These operations include, but not limited to the change of measurement pattern, the switch of display unit 104 backlight, the sampling of signal, etc.The acceleration change that fuselage 102 moves can be caused by the Non-follow control due to user, and such as, user can forward, backward,, upwards, move down fuselage 102 to the right left, or all around or the fuselage 102 that teetertotters, etc.For diaxon, three axles or more axle acceleration sensor, it comprises two or more detection axis, thus generates the detection signal comprising and represent acceleration and/or its change on different detection axis direction.Correspondingly, fuselage 102 can generate different control signals according to different detection signals.Such as, when fuselage 102 is moved up and down along the x-axis direction shown in Fig. 1, in the detection signal that acceleration transducer 150 generates, the accekeration in x-axis direction more greatly and constantly change, and very little at the accekeration of y-axis and/or z-axis.This detection signal and a predetermined threshold can compare by Signal Processing Element 142, after the x-axis accekeration of change at a time exceeds this predetermined threshold, Signal Processing Element 142 generates a control signal, such as, generate the control signal for changing measurement pattern.Again such as, when fuselage 102 is moved forward and backward along the z-axis direction shown in Fig. 1, in the detection signal that acceleration transducer 150 generates, the accekeration in z-axis direction more greatly and constantly change.Correspondingly, Signal Processing Element 142 by comparing with predetermined threshold the above-mentioned movement identifying fuselage 102, thus can generate control signal, such as, generate the control signal being used for switch/display element 104 backlight.Can find out, this movement control mode makes the operation of electrical measurement 100 and uses more convenient.
In some embodiments, whether the above-mentioned motion control function of electrical measurement 100 can be selected to open or close by operating personnel.Such as, some or a part in the input block 106 shown in Fig. 1 can be set to the functional switch signal receiving operating personnel's input, and this functional switch signal is supplied to Signal Processing Element 142.Whether Signal Processing Element 142 according to functional switch signal enabling or the response of closing detection signal, such as, can receive detection signal and whether correspondingly generates one or more control signal.
Fig. 3 shows the exemplary circuit diagram of Signal Processing Element in the electrical measurement 100 of Fig. 1.
As shown in Figure 3, this Signal Processing Element comprises amplifying circuit 161, sample circuit 162, comparator circuit 163, computing unit 164 and control module 165.。Wherein, amplifying circuit 161 is couple to acceleration transducer 150, and is configured to adjust and amplifies the detection signal that acceleration transducer 150 provides.Sample circuit 162 is couple to amplifying circuit, for through to adjust and the detection signal amplified is sampled and generated acceleration sampled signal, can determine the occurrence of the acceleration be detected based on this acceleration sampled signal.In some embodiments, sample circuit 162 comprises analog to digital conversion circuit (not shown), or its rear class couples analog to digital conversion circuit, carries out analog to digital conversion with degree of will speed up sampled signal, thus obtains the digital signal reflecting acceleration magnitude.Comparator circuit 163 is also couple to amplifying circuit 161, and it is configured to be adjusted and the detection signal amplified and predetermined threshold compare, and to export comparative result, such as, represents that detection signal is greater than predetermined threshold or is less than the value of predetermined threshold.
Computing unit 164 is couple to sample circuit 162 and comparator circuit 163, and it receives the digital signal of reflection acceleration magnitude from sample circuit 162, and receives the comparative result of detection signal and predetermined threshold from comparator circuit 163, to calculate it and to process.Computing unit 164 can from the relevant information of these extracting data acceleration and change thereof, and then judge whether to need to generate corresponding control signal.In some embodiments, computing unit 164 can according to representing the control signal that the comparative result generation that detection signal is greater than predetermined threshold such as indicates metering circuit to sample to device under test.In some embodiments, the change curve of the digital signal of reflection acceleration magnitude can also compare with the curve that prestores by computing unit 164, with determine the acceleration of fuselage or its change with whether with these Curve Matchings that prestores.Acceleration change curve when these curves prestored such as represent that fuselage is rocked, or acceleration change curve when fuselage falls, etc.If the change curve detected and the Curve Matching that prestores, computing unit 164 can determine the motion state of fuselage, and then generates corresponding control signal.
Control module 165 is couple to computing unit 164, and it is from computing unit 164 reception control signal, and correspondingly performs the concrete control of the miscellaneous part (such as metering circuit, display unit etc.) to electrical measurement according to this control signal.
In some embodiments, acceleration transducer 150 can be multi-shaft acceleration transducer, correspondingly, Signal Processing Element can comprise multichannel amplifying circuit 161, sample circuit 162 and comparator circuit 163, and wherein each road correspondingly processes the accekeration that a detection axis detects.Such as namely Fig. 3 shows the Signal Processing Element of 3 axle acceleration sensors and correspondence thereof, and this Signal Processing Element comprises No. three amplifying circuits 161, sample circuit 162 and comparator circuit 163.
In some embodiments, the Signal Processing Element of acceleration transducer also can not comprise independent comparator circuit, such as, but the acceleration sampled signal provided by computing unit 164 pairs of sample circuits 162 processes, and compares, to determine the motion state of fuselage with predetermined threshold.
In FIG, electrical measurement 100 is represented as the structure being inserted with two test test pencils, such as multimeter or voltage table.In certain embodiments, electrical measurement of the present utility model also can be the Portable electrical measurement device of other structures and purposes, such as, and pincerlike meter.
In some embodiments, pincerlike meter can comprise fuselage, is provided with current transformer, can measure electric current or other electrical quantitys contactlessly.Current transformer is connected to the metering circuit in fuselage.The fuselage of pincerlike meter is connected with acceleration transducer, and it is for detecting the acceleration of fuselage to the detection signal to generate correspondence.Pincerlike meter also comprises Signal Processing Element, and it is accommodated in fuselage, and is couple to acceleration transducer.The detection signal that this Signal Processing Element is configured to provide according to acceleration transducer generates one or more control signal.In some embodiments, pincerlike meter can also comprise one or more jack, can be connected to the metering circuit in fuselage by jack test test pencil.
It should be noted that, the block diagram shown in Fig. 2 and Fig. 3 illustrates just to the object of example, is not the restriction to the application.In some cases, some modules wherein can be increased or reduce as required.The device of the application can be realized by hardware circuits such as VLSI (very large scale integrated circuit) or gate array, logic chip or programmable hardware devices, also with the software simulating performed by various types of processor, also can be realized by the combination (such as firmware) of above-mentioned hardware circuit and software.
Although it should be noted that the some parts being referred to electrical measurement in above-detailed, this division is not enforceable.In fact, according to the embodiment of the application, the Characteristic and function of two or more parts above-described can be specialized in parts.Otherwise, the Characteristic and function of above-described parts can Further Division for be specialized by multiple parts.
The those skilled in the art of the art can pass through research instructions, disclosed content and accompanying drawing and appending claims, understand and implement other changes to the embodiment disclosed.In the claims, word " comprises " element and step of not getting rid of other, and wording " one ", " one " do not get rid of plural number.In the practical application of the application, the function of the multiple technical characteristics quoted during a part possibility enforcement of rights requires.Any Reference numeral in claim should not be construed as the restriction to scope.
Claims (17)
1. can sensed position change an electrical measurement, it is characterized in that, comprising:
Fuselage;
Acceleration transducer, it is connected to described fuselage, for detecting the acceleration of described fuselage to generate the detection signal representing described acceleration; And
Signal Processing Element, it is couple to described acceleration transducer to receive described detection signal, and described Signal Processing Element is configured to generate one or more control signal according to described detection signal.
2. electrical measurement according to claim 1, is characterized in that, described fuselage is provided with one or more jack, is connected to the metering circuit in described fuselage by described jack one or more test test pencil.
3. electrical measurement according to claim 2, is characterized in that, described acceleration transducer is configured to respond to the free-falling of described fuselage and generates the first detection signal; Described Signal Processing Element is configured to generate the first control signal according to described first detection signal;
Described metering circuit comprises sample circuit, it is couple to described test test pencil and described Signal Processing Element, and described first control signal be configured to according to receiving from described Signal Processing Element samples to obtain sampled signal to the device under test being couple to described test test pencil;
Described metering circuit is configured to process described sampled signal, to obtain measurement result.
4. electrical measurement according to claim 3, is characterized in that, described electrical measurement also comprises storer, and it is couple to described metering circuit, is configured to receive and stores described measurement result.
5. electrical measurement according to claim 1, is characterized in that, described Signal Processing Element is configured to the acceleration of described fuselage or its change to compare with predetermined threshold or predetermined curve, and generates described control signal.
6. electrical measurement according to claim 5, it is characterized in that, described acceleration transducer comprises two or more detection axis to obtain the detection signal of the acceleration be associated from different detection axis, and described Signal Processing Element is further configured to the acceleration be associated from different detection axis or its to change and compares with predetermined threshold or predetermined curve, and generates different control signals.
7. electrical measurement according to claim 1, it is characterized in that, described acceleration transducer comprises two or more detection axis to obtain representing the second detection signal of the linear acceleration comprised along different detection axis, and described Signal Processing Element be further configured to according to described second detection signal determine described fuselage towards, and according to by the fuselage determined towards generation second control signal.
8. the electrical measurement according to claim 6 or 7, is characterized in that, two or more detection axis described comprise two or three mutually orthogonal detection axis.
9. the electrical measurement according to claim 6 or 7, is characterized in that, described acceleration transducer detects along the linear acceleration of two or more detection axis described and/or the angular acceleration around two or more detection axis described.
10. electrical measurement according to claim 7, it is characterized in that, described electrical measurement also comprises display unit, it is couple to described Signal Processing Element to receive described second control signal, and described display unit is configured to the direction of the user interface changing display on it according to described second control signal.
11. electrical measurement according to claim 1, is characterized in that, described Signal Processing Element comprises:
Amplifying circuit, it is couple to described acceleration transducer, and is configured to adjust and amplifies the detection signal that described acceleration transducer provides;
Sample circuit, it is couple to described amplifying circuit, for through to adjust and the detection signal amplified is sampled and generated acceleration sampled signal;
Computing unit, it is couple to described sample circuit, for receiving described acceleration sampled signal, and generates control signal based on described acceleration sampled signal;
Control module, it is couple to described computing unit, for receiving described control signal from described computing unit, and controls according to the parts of described control signal to electrical measurement.
12. electrical measurement according to claim 11, it is characterized in that, described Signal Processing Element also comprises comparator circuit, and it is coupled between described amplifying circuit and described computing unit, for to be adjusted and the detection signal amplified and predetermined threshold compare.
13. electrical measurement according to claim 1, is characterized in that, described acceleration transducer is arranged on the centre of gravity place of described fuselage.
14. electrical measurement according to claim 1, it is characterized in that, described electrical measurement also comprises input block, described functional switch signal is also supplied to described Signal Processing Element by the functional switch signal that described input block receives operating personnel's input, and described Signal Processing Element is configured to according to described functional switch signal enabling or closes the reception of described detection signal and generate described one or more control letter and to make number.
15. electrical measurement according to claim 1, is characterized in that, described electrical measurement is digimer.
16. electrical measurement according to claim 1, it is characterized in that, described electrical measurement is pincerlike meter, and wherein said pincerlike meter has current transformer and metering circuit, and described current transformer to be arranged on described fuselage and the metering circuit be connected in described fuselage.
17. electrical measurement according to claim 16, is characterized in that, described fuselage is also provided with one or more jack, are connected to the metering circuit in described fuselage by described jack one or more test test pencil.
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| CN201420769976.0U CN204330852U (en) | 2014-12-09 | 2014-12-09 | Can sensed position change electrical measurement |
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| CN201420769976.0U CN204330852U (en) | 2014-12-09 | 2014-12-09 | Can sensed position change electrical measurement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109709377A (en) * | 2019-03-06 | 2019-05-03 | 浙江天地人科技有限公司 | A kind of current detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109709377A (en) * | 2019-03-06 | 2019-05-03 | 浙江天地人科技有限公司 | A kind of current detector |
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Effective date of registration: 20160518 Address after: Washington State Patentee after: Fluke Corp. Address before: 200335, building 6, building 4, 280 Lane Road, Changning District, Shanghai Patentee before: Danaher (Shanghai) Industrial Instruments Technology Research and Development Co., Ltd. |