CN206321734U - Handheld meter - Google Patents
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- CN206321734U CN206321734U CN201621208809.4U CN201621208809U CN206321734U CN 206321734 U CN206321734 U CN 206321734U CN 201621208809 U CN201621208809 U CN 201621208809U CN 206321734 U CN206321734 U CN 206321734U
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Abstract
The utility model provides a kind of handheld meter, including：First hander, including the first housing, N number of first probe and the first detection circuit, each first probe and the first detection circuit are arranged in the first housing, and wherein N is the integer more than or equal to 2；Second hander, including the second housing and N number of second probe, each second probe are arranged in the second housing；Wherein, the first detection circuit can be connected with the first end of one first probe, and can be connected with the first end of one second probe, and whether the circuit that the second end that the first detection circuit is used for the second end and the second probe for detecting the first probe is contacted simultaneously turns on.Handheld meter of the present utility model, can realize makes circuit on-off test operation more convenient, and improves the efficiency of circuit on-off test.
Description
Technical field
The utility model is related to electronic device technology, more particularly to a kind of handheld meter.
Background technology
Among actual production life, it is often necessary to circuit is tested, to determine the break-make situation of circuit.
At present mainly using the break-make situation of universal meter measurement circuit, universal meter includes table body and two probe pens.Specifically
Operating process is：On the platform that first table body need to be reliably placed near test point or ground, then both hands respectively hold a probe pen
The two ends of the test point of circuit are contacted, and then judge the break-make situation of circuit.
It is that when being tested using universal meter, both hands respectively hold a probe pen, and table body needs reliability in place of the deficiencies in the prior art
Ground is placed on the platform near test point or ground, if operation scene is without such condition, is generally required with body
Table body is fixed at other positions, and very big inconvenience is so carried out to calibration tape.
Utility model content
The utility model provides a kind of handheld meter, for solving the problem of on off test is inconvenient in the prior art.
The utility model provides a kind of handheld meter, including：
First hander, including the first housing, N number of first probe and the first detection circuit, each first probe and institute
State the first detection circuit to be arranged in the first housing, wherein N is the integer more than or equal to 2；
Second hander, including the second housing and N number of second probe, each second probe are arranged at the second housing
In；
Wherein, the first detection circuit can be connected with the first end of first probe, and can be with one described second
The first end connection of probe, the first detection circuit is used for the second of the second end and the second probe for detecting first probe
Whether the circuit of end contact simultaneously turns on.
According to handheld meter as described above, alternatively, the specifications of at least 2 first probes are different and/or at least
There is the specification of 2 second probes different.
According to handheld meter as described above, alternatively, also including switching switch, the first detection circuit is by cutting
Switch is changed to be connected with each first probe.
According to handheld meter as described above, alternatively, first probe includes the first slideway and the first probe pen, institute
The first installation of slide track is stated on first housing, first probe is by first slideway to outside first housing
Portion is skidded off.
According to handheld meter as described above, alternatively, second probe includes the second slideway and the second probe pen, institute
The second installation of slide track is stated on second housing, second probe is by second slideway to outside second housing
Portion is skidded off.
According to handheld meter as described above, alternatively, the first detection circuit includes：
Power supply；
First bleeder circuit, and the power sources in parallel, first resistor that first bleeder circuit includes being sequentially connected in series, the
Two resistance and 3rd resistor；
Second bleeder circuit, with the power sources in parallel, second bleeder circuit includes the 4th resistance, the company being sequentially connected in series
End and the 5th resistance are connect, the first end of the connection end is used to connect first probe, and the second end of the connection end is used for
Connect second probe；
Comparator, with the power sources in parallel, the first input end of the comparator is connected to the second resistance and described
Between 3rd resistor, the second input of the comparator be connected to the connection end the second end and the 5th resistance it
Between；
Indicator, is connected with the output end of the comparator, and the indicator is used for the electricity exported according to the output end
Ordinary mail number sends instruction；
Wherein, the first resistor is identical with the 4th resistance, the 3rd resistor and the 5th resistance resistance
Value is identical.
According to handheld meter as described above, alternatively, the indicator includes at least one in following instrument：Honeybee
Ring device, LED.
According to handheld meter as described above, alternatively, second hander also includes being arranged on the second shell
The second detection circuit in body, the second detection circuit can be connected with the first end of first probe, and can be with an institute
The first end connection of the second probe is stated, the second detection circuit is used for the second end and the second probe for detecting first probe
The second end simultaneously contact circuit whether turn on.
According to handheld meter as described above, alternatively, the second detection circuit and described first detects circuit
Structure is identical.
According to handheld meter as described above, alternatively, also including illuminating lamp, the illuminating lamp is separately positioned on described
On first hander and second hander, for providing illumination.
The handheld meter that the utility model is provided, by setting two the first handers that can be hand-held and second hand-held
It is provided with device, and the first hander on the first probe and the second hander and is provided with the second probe, the first probe and second
Probe is connected with the first detection circuit respectively, so, and can be realized as circuit on-off by the first detection circuit tests, such
Handheld meter, which can be realized, makes circuit on-off test operation more convenient, and improves the efficiency of circuit on-off test.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are
Some embodiments of the present utility model, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
The structural representation for the handheld meter that Fig. 1 provides for the embodiment of the utility model one；
Structural representation in the handheld meter that Fig. 2 provides for another embodiment of the utility model；
The front view of the first hander in the handheld meter that Fig. 3 a provide for another embodiment of the utility model；
The left view of the first hander in the handheld meter that Fig. 3 b provide for another embodiment of the utility model；
The right view of the first hander in the handheld meter that Fig. 3 c provide for another embodiment of the utility model；
The front view of the second hander in the handheld meter that Fig. 4 a provide for another embodiment of the utility model；
The left view of the second hander in the handheld meter that Fig. 4 b provide for another embodiment of the utility model；
The right view of the second hander in the handheld meter that Fig. 4 c provide for another embodiment of the utility model；
The structural representation of the first detection circuit in the handheld meter that Fig. 5 provides for the utility model another embodiment
Figure.
Reference：
1：First hander； 2：Second hander； 3：Du Pont's line；
11：First housing； 21：Second housing； 41：Female；
12：First probe； 22：Second probe； 42：Male；
13：First illuminating lamp； 23：Second illuminating lamp； 31：Power supply；
14：The switch of first illuminating lamp； 24：The switch of second illuminating lamp； 36：Power switch；
121：First probe pen； 221：Second probe pen； 35：Indicator；
122：First slideway； 222：Second slideway； 351：First current-limiting resistance；
32：First bleeder circuit； 33：Second bleeder circuit； 352：Second current-limiting resistance；
321：First resistor； 331：4th resistance； 353：LED；
322：Second resistance； 332：Connection end； 355：Buzzer；
323：3rd resistor； 333：5th resistance； 354：VMOS FETs；
34：Comparator； 3321：The first end of connection end； 3541：Grid；
341：The first input end of comparator； 3322：Second end of connection end； 3542：Source electrode；
342：Second input of comparator； 344：First power end of comparator； 3543：Drain electrode；
343：The output end of comparator； 345：The second source end of comparator； 123：First slide key；
223：Second slide key.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Embodiment one
The structural representation for the handheld meter that Fig. 1 provides for the embodiment of the utility model one.As shown in figure 1, this implementation
The handheld meter of example includes：First hander 1 and the second hander 2.
Wherein, the first hander 1 (is not marked including the first housing 11, the detection circuit of N number of first probe 12 and first in Fig. 1
Go out), each detection circuit of first probe 12 and first is arranged in the first housing 11, and wherein N is the integer more than or equal to 2；
Second hander 2 includes the second housing 21 and N number of second probe 22, and each second probe 22 is arranged in the second housing 21.
For example, the first housing 11 and the second housing 21 profile is ergonomically designed, such as hand hand-held to facilitate
Handle, while the volume of the first housing 11 and the second housing 21 is unsuitable excessive, such as so that the appearance of spectacle case size can be put in order
Volume in tool is preferred, so light and portable.In addition the first detection circuit package can be entered one in the first housing 11
Step ground makes handheld meter light and portable.
It should be noted that the number of the first probe 12 and the second probe 22 can be all provided with being set to multiple.Each first visits
First 12 specification can be with identical, can also be different, or the specification of at least 2 first probes 12 is different, equally,
The specification of each second probe 22 can be with identical, can also be different, or at least 2 second probes 22 specification not
Together.
When the specification of each first probe 12 is identical, if there is one first probe 12 to damage, other one can be used
Individual first probe 12 continues detection, so ensure that the promptness of test.It is identical when the second probe 22.
If moreover, there is the probe of multiple different sizes, can easily facilitate using the probe of corresponding specification to detect electronics
Whether the circuit of equipment turns on, you can be detected using the first probe 12 and the second probe 22 of same size simultaneously,
The first probe 12 and second that can also be used specification different pops one's head in be detected, can specifically set according to actual needs.
For example, the number of the first probe 12 and the second probe 22 at least 3 respectively, i.e., the first probe 12 and second
Probe 22 at least has Φ 1.5mm, Φ 2mm, tri- kinds of specifications of Φ 2.5mm, when the aperture of the test point of circuit to be tested is
During Φ 1.5mm, just using Φ 1.5mm probe tests, when the aperture of the test point of circuit to be tested is Φ 2mm, just use
Φ 2mm or Φ 1.5mm probe tests, as long as the aperture that selected probe specification is no more than test point is met, with such
Push away, on off test is carried out according to the suitable probe of the aperture of the test point of circuit selection.
More specifically, when a test point of circuit to be tested is the pin in 9 pin serial line interfaces, if using
Universal meter of the prior art test, be limited to universal meter popped one's head in it is thick, it is impossible to be inserted directly into engaged test in 9 pin serial line interfaces
Point, is at this moment often accomplished by being wound up universal meter probe with a thinner copper wire, 9 pin serial line interfaces is contacted by copper wire
In test point measure, it is clear that this on off test efficiency is low.More specifically, when circuit to be tested is terminal block
During circuit, because the metal terminal installation site of terminal block is deep, universal meter probe goed deep into terminal due to pop one's head in slightly be difficult to
The instrument connection contacting metal terminal measurement of row.According to the handheld meter of the present embodiment, operator is using handheld meter
When, on off test is carried out according to the suitable probe of the aperture of the test point of circuit selection, so as to realize to multiple aperture
The circuit of test point carries out preferably on off test.
Wherein, the first detection circuit can be connected with the first end of one first probe 12, and can be with one second probe 22
First end connection, first detection circuit be used for detect first probe 12 the second end and second probe 22 the second end connect simultaneously
Whether tactile circuit turns on.For example, two test points of circuit to be tested are respectively in 9 different pin serial line interfaces,
One of test point is connected with the second end of the first probe 12, and another test point is connected with the second end of the second probe 22,
The first end of first probe 12 and the first end of the second probe 22 are connected with the first detection circuit respectively, at this moment, the first detection electricity
Road judges the break-make situation of tested circuit according to test result.
First detection circuit can be connected with each first probe 12 and each second probe 22, be tested
When, the first detection circuit is connected with one first probe 12 and one second probe 22 respectively.First detection circuit and each probe
The mode of connection can have a variety of, for example, being attached by switching switch.For example, the first hander 1 has 3 the
One probe 12, then in the type selecting switched to switching, will at least choose the switching switch of three tunnels and the above, switching switch switching
Circuit belongs to prior art, will not be described here.
Alternatively, it is provided with first housing 11 of the present embodiment on Du Pont's line connector, such as female 41, the second housing
Du Pont's line 3 can be connected with by being provided with Du Pont's line connector, such as male 42, Liang Ge Du Ponts line connector, the first detection electricity
Road can be connected by Du Pont's line 3 with the second probe 22.In addition, the distance between test point according to circuit is freely selected
Du Pont's line 3 of corresponding length connects the first hander 1 and the second hander 2, it is clear that the present embodiment extends hand by Du Pont's line 3
Tester is held, can avoid the occurrence of and the difficult situation of on off test occur because the test point of circuit is apart from each other, and then can
Realize the convenience for further improving circuit on-off test.
Alternatively, handheld meter also includes illuminating lamp, and illuminating lamp is separately positioned on the first hander 1 and the second hander
On 2, for providing illumination.For example, the first hander 1 is provided with the switch 14 of the first illuminating lamp 13 and the first illuminating lamp,
Second hander 2 is provided with the switch 24 of the second illuminating lamp 23 and the second illuminating lamp, is illuminated by being installed in handheld meter
Lamp, so that operator can choose whether to use illuminating lamp according to the light levels at operation scene, is provided more preferably on off test
Ground lighting environment, and then realize that preferably circuit on-off is tested.
The handheld meter that the present embodiment is provided, by setting two the first handers 1 and second that can be hand-held hand-held
It is provided with device 2, and the first hander 1 on first probe 12 and the second hander 2 and is provided with the second probe 22, the first probe
12 are connected with the first detection circuit respectively with the second probe 12, so, circuit on-off are can be realized as by the first detection circuit
Test, such handheld meter, which can be realized, makes circuit on-off test operation more convenient, and improves circuit on-off test
Efficiency.
Embodiment two
The present embodiment does further supplementary notes to the handheld meter of embodiment one.The specifically hand-held survey to embodiment one
The first probe, the second probe in examination instrument do further supplementary notes.
Structural representation in the handheld meter that Fig. 2 provides for another embodiment of the utility model；Fig. 3 a are this practicality
The front view of the first hander in the handheld meter that new another embodiment is provided；Fig. 3 b, which are that the utility model is another, to be implemented
The left view of the first hander in the handheld meter that example is provided；Fig. 3 c for another embodiment of the utility model provide it is hand-held
The right view of the first hander in tester；In the handheld meter that Fig. 4 a provide for another embodiment of the utility model
The front view of two handers；A left side for the second hander in the handheld meter that Fig. 4 b provide for another embodiment of the utility model
View；The right view of the second hander in the handheld meter that Fig. 4 c provide for another embodiment of the utility model.
As shown in Figure 3 a-3b, the first probe 12 of first hander 1 of the present embodiment includes the first slideway 122 and first
Probe pen 121；As shown in Fig. 4 a-4b, the second probe of second hander 2 of the present embodiment includes the second slideway 222 and second and visited
Pen 221.
Specifically, the first slideway 122 is arranged on the first housing 11, and the first probe 12 is by the first slideway 122 to the
The outside of one housing 11 is skidded off, and the second slideway 222 is arranged on the second housing 21, second probe 22 by the second slideway 222 to
The outside of second housing 21 is skidded off, and each probe has corresponding slideway and probe pen.
For example, the first hander 1 and the second hander 2 are provided with the probe pen laying in 3 probes, 3 probes
In slideway, slide key is set in every probe pen, such as the first slide key 123 or or the second slide key 223 be used for by probe pen in cunning
Skid off and slide into road, realize that function that probe pen is skidded off and slided into slideway is not limited to illustrate in every probe pen
Slide key is set.
The present embodiment probe includes slideway and probe pen, the smooth movement that probe pen can be on slideway, so as to according to circuit
The aperture of test point, simply and easily selects the probe of appropriate size model to carry out on off test.
Embodiment three
The present embodiment does further supplementary notes to the first detection circuit of above-described embodiment.Fig. 5 be the utility model again
The structural representation of the first detection circuit in the handheld meter that one embodiment is provided.As shown in figure 5, the first detection circuit bag
Include：Power supply 31, the first bleeder circuit 32, the second bleeder circuit 33, comparator 34 and indicator 35.
Wherein, power supply 31 is the energy source of the first detection circuit, such as can be used as power supply using DC 6V button cells
31, it can additionally set a power switch 36 to be used to control whether power supply 31 turns on.For example, working as needs to use handheld test
During instrument, 36 are turned on the power switch, the first detection circuit is able to carry out on off test work；When handheld meter need not be used
When, disconnecting power switch 36, the first detection circuit because non-transformer supply, it is impossible to perform on off test work.The present embodiment can be with
It can realize that control first detects whether circuit performs on off test and work by the cooperation of power supply 31 and a power switch 36,
So as to realize that reduction by first detects the loss of circuit, the service life of handheld meter is further lifted.
Wherein, the first bleeder circuit 32 is in parallel with power supply 31, and the first bleeder circuit includes the first resistor being sequentially connected in series
321st, second resistance 322 and 3rd resistor 323；Second bleeder circuit 33 is in parallel with power supply 31, the second bleeder circuit 33 include according to
4th resistance 331 of secondary series connection, the resistance 333 of connection end 332 and the 5th, the first end 3321 of connection end 332 are used to connect first
Probe 12, the second end 3322 of connection end is used to connect the second probe 22；Wherein, first resistor 321 and the resistance of the 4th resistance 331
Identical, 3rd resistor 323 is identical with the resistance of the 5th resistance 333.
It should be noted that the particular circuit configurations of the first bleeder circuit 32 and the second bleeder circuit 33 are not limited, citing comes
Say, the first bleeder circuit 32, the second bleeder circuit 33 are not limited to three resistance of only connecting, and can also connect more resistance, string
The bleeder circuit of 3, connection and its above resistance composition is advantageous in that, with the first bleeder circuit 32 and second in the present embodiment
Bleeder circuit 33 is for example, identical in the resistance 331 of first resistor 321 and the 4th, the resistance of the resistance of 3rd resistor 323 and the 5th
Under the identical premise of value 333, second resistance 322 is preset as to the resistance critical value 200m Ω of circuit on-off, by compare with
Connection end 332 connect circuit to be measured and second resistance 322 resistance size, be connected with connection end 332 circuit to be measured
More than second resistance 322 resistance when, circuit is off, the circuit to be measured being connected with connection end 332 be less than second
During the resistance of resistance 322, circuit is in connected state, and then can realize that the break-make situation simply and easily to circuit has
Effect judges.
Wherein, the first input end 341 of comparator 34 is connected between second resistance 322 and 3rd resistor 323, comparator
34 the second input 342 is connected between the second end 3322 of connection end 332 and the 5th resistance 333.It should be noted that than
In parallel with power supply 31 by the first power end 344 and second source end 345 compared with device 34, i.e., power supply 31 is that comparator 34 provides work
Power supply.
For example, comparator 34 is chosen as voltage comparator, and first input end 341 is chosen as the positive of voltage comparator
Input, the second input 342 is chosen as the inverting input of voltage comparator, when the electricity of the first input end 341 of comparator
When pressure is more than the voltage of the second input 342 of comparator, the output high level of output end 343 of comparator, otherwise comparator
Output end 343 exports low level.In the present embodiment, the circuit to be measured being connected with connection end 332 is less than second resistance 322
During resistance, the output high level of output end 343 of comparator 34.The circuit to be measured being connected with connection end 332 is more than second resistance
During 322 resistance, the output low level of output 343 of comparator 32.
Wherein, indicator 35 is connected with the output end 343 of comparator 34, and indicator 35 is used for the output according to comparator 34
The level signal of the output of end 343 sends instruction.
For example, the circuit structure of indicator 35 can be using a VMOS (V-groove metal-oxide
Semiconductor, V-groove metal-oxide semiconductor (MOS)) FET 354, buzzer 355 and/or LED 353 constitute, when
During line conduction, buzzer 355 can send sound, or LED 353 can send light.Wherein, VMOS FETs
354 have three connection ends, respectively grid 3541, source electrode 3542 and drain electrode 3543, when the grid of VMOS FETs 354
When the voltage of the source electrode 3542 of 3541 and VMOS FETs is more than 0.6V, VMOS FETs 354 work in saturation region, quite
Turned in VMOS FETs 354, electric current flows through source electrode 3542 and the drain electrode 3543 of VMOS FETs 354；When VMOS effects
When voltage that should be between the grid 3541 of pipe and the source electrode 3542 of VMOS FETs is less than 0.6V, the work of VMOS FETs 354
Make in cut-off region, closed equivalent to VMOS FETs 354, no current flows through source electrode 3542 and the leakage of VMOS FETs 354
Pole 3543.
Using the characteristics design indicator of VMOS FETs 354, such as, the grid 3541 of VMOS FETs 354
It is connected by the first current-limiting resistance 351 with the output end 343 of comparator 34, the drain electrode 3543 of VMOS FETs 354 passes through
Two current-limiting resistances 352 are connected with the positive pole of power supply 31, and the source electrode 3542 of VMOS FETs 354 is connected with the negative pole of power supply 31,
It is in series with simultaneously between the source electrode 3542 of VMOS FETs 354 and the negative pole of power supply 31 in following device or circuit at least
It is a kind of：Buzzer 355, LED (light emitting diode, light emitting diode) lamp 353, by buzzer 355 and LED
353 compose in parallel circuit, or are in series with buzzer between the drain electrode 3543 of VMOS FETs 354 and the positive pole of power supply 31
355 or LED 353 or circuit is composed in parallel by buzzer 355 and LED 353.It should be noted that being not limited to utilize VMOS
The characteristics design indicator of FET, can also be other power electronic devices.
When the circuit to be measured being connected with connection end 332 is less than the resistance of second resistance 322, the output end of comparator 34
343 output high level, VMOS FETs 354 are turned on, and buzzer 355 produces buzzing, or LED 353 sends light, or buzzing
Device 355 produces buzzing, and LED 353 sends light simultaneously.When the circuit to be measured being connected with connection end 332 is more than second resistance
During 322 resistance, the output low level of output end 343 of comparator 34, VMOS FETs 354 are closed, and buzzer 355 is not produced
Buzzing, or LED 353 do not send light, or buzzer 355 does not produce buzzing while LED 353 does not send light.This implementation
The indicator 35 of example design is indicated the on off operating mode of circuit using buzzer 355 or LED 353, can solve the problem that light
The problem of on off test is inconvenient during poor and/or noise larger operating environment, and then realize that preferably circuit on-off is tested.
Alternatively, the second hander 2 also includes the second detection circuit being arranged in the second housing 21, the second detection circuit
It can be connected, and can be connected with the first end of one second probe 22 with the first end of one first probe 12, the second detection circuit
For detecting whether the circuit that the second end of the first probe 12 and the second end of the second probe 22 are contacted turns on simultaneously.Alternatively,
The structure of second detection circuit and the first detection circuit is identical, and the second detection circuit is not repeated herein.When operator is using this
When handheld meter in embodiment carries out on off test, the inspection of the first hander 1 or the second hander 2 can be freely selected
Slowdown monitoring circuit, all sets detection circuit to be in order at the consideration of Redundancy Design, improves hand-held in the first hander 1 or the second hander 2
The reliability of tester.
The handheld meter that the present embodiment is provided, by setting the first bleeder circuit 32, second in parallel with power supply 31
Bleeder circuit 33 and comparator 34 realize the detection of circuit on-off, and by the teaching process person's test result of indicator 35, so
It is simple in construction and cost is relatively low on the basis of effectively circuit on-off is judged.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing program can be stored in a computer read/write memory medium, the program
Upon execution, the step of including above method embodiment is performed；And foregoing storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or to which part technical characteristic progress etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from each embodiment technology of the utility model
The scope of scheme.
Claims (10)
1. a kind of handheld meter, it is characterised in that including：
First hander, including the first housing, N number of first probe and the first detection circuit, each first probe and described the
One detection circuit is arranged in the first housing, and wherein N is the integer more than or equal to 2；
Second hander, including the second housing and N number of second probe, each second probe are arranged in the second housing；
Wherein, the first detection circuit can be connected with the first end of first probe, and can be with second probe
First end connection, it is described first detection circuit be used for detect it is described first probe the second end and second probe the second end it is same
When the circuit that contacts whether turn on.
2. handheld meter according to claim 1, it is characterised in that the specifications of at least 2 first probes it is different and/
Or the specification of at least 2 second probes is different.
3. handheld meter according to claim 1, it is characterised in that also including switching switch, the first detection electricity
Road is connected by switching switch with each first probe.
4. handheld meter according to claim 1, it is characterised in that first probe includes the first slideway and first
Probe pen, first installation of slide track is on first housing, and first probe passes through first slideway to described first
The outside of housing is skidded off.
5. handheld meter according to claim 1, it is characterised in that second probe includes the second slideway and second
Probe pen, second installation of slide track is on second housing, and second probe passes through second slideway to described second
The outside of housing is skidded off.
6. the handheld meter according to any one of claim 1-5, it is characterised in that the first detection circuit bag
Include：
Power supply；
First bleeder circuit, with the power sources in parallel, first bleeder circuit includes first resistor, the second electricity being sequentially connected in series
Resistance and 3rd resistor；
Second bleeder circuit, with the power sources in parallel, second bleeder circuit includes the 4th resistance, the connection end being sequentially connected in series
With the 5th resistance, the first end of the connection end is used to connect first probe, and the second end of the connection end is used to connect
Second probe；
Comparator, with the power sources in parallel, the first input end of the comparator is connected to the second resistance and the described 3rd
Between resistance, the second input of the comparator is connected between the second end of the connection end and the 5th resistance；
Indicator, is connected with the output end of the comparator, and the level that the indicator is used to be exported according to the output end is believed
Number send instruction；
Wherein, the first resistor is identical with the 4th resistance, the 3rd resistor and the 5th resistance phase
Together.
7. handheld meter according to claim 6, it is characterised in that the indicator is included in following instrument at least
It is a kind of：Buzzer, LED.
8. handheld meter according to claim 6, it is characterised in that second hander is also described including being arranged on
The second detection circuit in second housing, the second detection circuit can be connected with the first end of first probe, and can be with
The first end connection of one second probe, the second detection circuit is used for the second end and for detecting first probe
Whether the circuit that the second end of two probes is contacted simultaneously turns on.
9. handheld meter according to claim 8, it is characterised in that the second detection circuit and first detection
The structure of circuit is identical.
10. handheld meter according to claim 1, it is characterised in that also including illuminating lamp, the illuminating lamp is set respectively
Put on first hander and second hander, for providing illumination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621208809.4U CN206321734U (en) | 2016-11-09 | 2016-11-09 | Handheld meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621208809.4U CN206321734U (en) | 2016-11-09 | 2016-11-09 | Handheld meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206321734U true CN206321734U (en) | 2017-07-11 |
Family
ID=59263952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621208809.4U Active CN206321734U (en) | 2016-11-09 | 2016-11-09 | Handheld meter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324425A (en) * | 2016-11-09 | 2017-01-11 | 中车大连电力牵引研发中心有限公司 | Portable tester |
| CN116566505A (en) * | 2023-07-12 | 2023-08-08 | 陕西龙冠通信科技有限公司 | Automatic debugging device for communication equipment |
-
2016
- 2016-11-09 CN CN201621208809.4U patent/CN206321734U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324425A (en) * | 2016-11-09 | 2017-01-11 | 中车大连电力牵引研发中心有限公司 | Portable tester |
| CN116566505A (en) * | 2023-07-12 | 2023-08-08 | 陕西龙冠通信科技有限公司 | Automatic debugging device for communication equipment |
| CN116566505B (en) * | 2023-07-12 | 2023-09-26 | 陕西龙冠通信科技有限公司 | Automatic debugging device for communication equipment |
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