CN102121955A - Circuit detection device - Google Patents
Circuit detection device Download PDFInfo
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- CN102121955A CN102121955A CN201010002319XA CN201010002319A CN102121955A CN 102121955 A CN102121955 A CN 102121955A CN 201010002319X A CN201010002319X A CN 201010002319XA CN 201010002319 A CN201010002319 A CN 201010002319A CN 102121955 A CN102121955 A CN 102121955A
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Abstract
The invention provides a circuit detection device comprising a contact module, an anode and cathode detection module and a voltage strength detection module, wherein the contact module comprises two contact pins which are respectively used for contacting the anode and the cathode of a circuit to be detected; the anode and cathode detection module is connected with the contact module, and is used for detecting the polarity of the circuit to be detected; the voltage strength detection module is connected with the contact module, and is used for detecting the voltage strength level of the circuit to be detected; and the voltage strength level corresponds to the preset voltage value range. The circuit detection device provided by the invention has the advantages of simple circuit structure, smaller volume and high practicality and is very convenient for inspectors to use, and the polarity of the circuit to be detected can be detected.
Description
Technical field
The present invention relates to the electric circuit inspection technical field, relate in particular to a kind of circuit checker.
Background technology
At present a lot of equipment usually need the circuit of equipment is detected when debugging or fault eliminating.Electric circuit inspection generally includes two steps, and step is to detect the whether conducting of this circuit, and the further positive-negative polarity of decision circuitry; Another step is to measure the electric parameter of this circuit, as the size of voltage, can utilize instrument such as multimeter to measure usually.
In some special-purpose Circuits System, mining industry supervisory system such as mine, debugging or fault when getting rid of, the voltage strength grade that only needs the positive-negative polarity of testing circuit and circuit usually is that the scope of magnitude of voltage gets final product, and need not measure the value of electric parameter accurately.Use multimeter obviously can bring a lot of inconvenience this moment, and multimeter belongs to exact instrument, complicated operation, and inconvenience is carried.And some detect electroprobes, though the aspect of carrying, detection mode is single, positive-negative polarity that usually can only testing circuit, voltage strength grade that can't metering circuit.
As the above analysis, existing checkout equipment exists detection mode single or manipulate not easy problem, in some special-purpose Circuits System such as mining industry supervisory system, is difficult to obtain good result of use when carrying out electric circuit inspection.
Summary of the invention
The invention provides a kind of circuit checker,, improve the efficient of electric circuit inspection to realize the positive-negative polarity and the voltage strength grade of testing circuit easily and effectively.
The embodiment of the invention provides a kind of circuit checker, comprising: contact modules, both positive and negative polarity detection module and voltage strength detection module;
Described contact modules comprises two contact pins, and described contact pin is respectively applied for the positive pole and the negative pole of contact circuit to be detected;
Described both positive and negative polarity detection module is connected with described contact modules, is used to detect the positive-negative polarity of described circuit to be detected;
Described voltage strength detection module is connected with described contact modules, is used to detect the voltage strength grade of described circuit to be detected, and described voltage strength grade is corresponding with default range of voltage values.
Described both positive and negative polarity detection module comprises anodal testing circuit and negative pole testing circuit, when after described contact modules contacts circuit to be detected, forming forward circuit, and then anodal testing circuit conducting, the negative pole testing circuit ends; When after described contact modules contacts circuit to be detected, forming negater circuit, then negative pole testing circuit conducting, anodal testing circuit ends.
Described anodal testing circuit comprises a light emitting diode, and described negative pole testing circuit comprises a light emitting diode.
Described voltage strength detection module comprises that at least two voltage ratios are than driver.
Described voltage strength detection module comprises light emitting diode, and the negative pole end of each described light emitting diode is connected than driver with a described voltage ratio, and positive terminal is connected with described contact modules.
Described voltage strength detection module comprises the LB1405 chip, and described LB1405 chip is made up of than driver 5 voltage ratios.
Described voltage strength detection module also comprises slide rheostat, described slide rheostat is connected with described LB1405 chip, be used for the highest detection voltage of LB1405 chip and the highest reference voltage of circuit to be detected are mated, the lowest detection voltage of LB1405 chip and the minimum reference voltage of circuit to be detected are mated.
Described contact pin comprises probe and/or crocodile clip.
Circuit checker provided by the invention, positive-negative polarity and the voltage strength grade that can treat testing circuit detect, and circuit structure is simple, and volume is less, and the testing staff is used very easily.Has very high practicality.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the circuit checker that Fig. 1 provides for one embodiment of the invention;
The structural representation of the LB1405 chip in the circuit checker that Fig. 2 provides for one embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope of protection of the invention.
Fig. 1 is the structural representation of an embodiment of circuit checker of the present invention, and the circuit checker of present embodiment is used for the voltage strength grade of the positive-negative polarity of circuit and circuit is detected.As shown in Figure 1, this circuit checker can comprise: contact modules 1, both positive and negative polarity detection module 2 and voltage strength detection module 3.
Wherein, contact modules 1 comprises two contact pins: the first contact pin 11 contacts pin 12 with second, and these two contact pins are respectively applied for the positive pole and the negative pole of contact circuit to be detected; The contact pin all can be probe and/or crocodile clip, is overlapped on the circuit to be detected to measure by the first contact pin 11 is contacted pin 12 with second.
Both positive and negative polarity detection module 2 is connected with contact modules 1, is used to detect the positive-negative polarity of circuit to be detected.When the voltage of first contact pin 11 contact during greater than the voltage of the second contact pin, 12 contacts, with the circuit to be detected of contact this moment as forward circuit; When the voltage of first contact pin 11 contact during less than the voltage of the second contact pin contact, with the circuit to be detected of contact this moment as negater circuit.Both positive and negative polarity detection module 2 comprises anodal testing circuit and negative pole testing circuit, when forming forward circuit behind the contact modules 1 contact circuit to be detected, and anodal testing circuit conducting, the negative pole testing circuit ends; When forming negater circuit behind the contact modules 1 contact circuit to be detected, the conducting of negative pole testing circuit, anodal testing circuit ends.
Observe for ease of the user, comprise a forward LED21 on the anodal testing circuit, when anodal testing circuit conducting, forward LED21 is luminous; Comprise a reverse LED22 on this negative pole testing circuit, when anodal testing circuit conducting, oppositely LED22 is luminous.The testing staff is luminous by observing which LED, just can know the positive-negative polarity of circuit to be detected.
Voltage strength detection module 3 is connected with contact modules 1, be used to detect the strength grade of circuit to be detected, this voltage strength grade is corresponding with default range of voltage values, scope as the first voltage strength grade corresponding voltage value is 8v to 10v, and the scope of the second voltage strength grade corresponding voltage value is 6v to 8v.
Detection to the voltage strength grade of circuit can utilize voltage ratio to realize than driver, each voltage ratio can detect voltage in a certain scope than driver, can detect magnitude of voltage in 0v to the 2v scope as first voltage ratio than driver, second voltage ratio can detect magnitude of voltage in 2v to the 4v scope than driver.When actual measurement, to the voltage strength grade classification of major general's circuit be two grades, therefore, voltage strength detection module 3 comprises that at least two voltage ratios are than driver.When voltage strength detection module 3 has been selected 5 voltage ratios than driver for use, optionally, can use the LB1405 chip of forming than driver by 5 voltage ratios.
Observe for ease of the user, voltage strength detection module 3 comprises a plurality of LED, and each LED connects a voltage ratio than driver, and the negative pole end of LED is connected than driver with voltage ratio, and positive terminal is connected with test module 1.When the magnitude of voltage of circuit is in the range of voltage values that some voltage ratios detect than driver, then luminous than the LED that driver is connected with this voltage ratio.The testing staff is luminous by observing which LED, just can know the voltage strength grade of circuit to be detected.
When specific implementation, be that example describes with circuit checker shown in Figure 1, referring to Fig. 1, the first contact pin 11 of contact modules 1 is positioned on the anodal testing circuit, and the second contact pin 12 is positioned on the negative pole testing circuit.Forward LED21 on the anodal testing circuit can be the LED of a green, and the reverse LED22 on the negative pole testing circuit can be the LED of a redness.
Voltage strength detection module 3 comprises: LB1405 chip and 5 LED.Referring to Fig. 2 is the structural representation of LB1405 chip, each pin of each this chip of digitized representation among the figure.The LB1405 chip internal comprises that 5 voltage ratios are than driver: first voltage ratio than driver, second voltage ratio than driver, tertiary voltage relatively driver, the 4th voltage ratio than driver and the 5th voltage ratio than driver.
The principle of work of LB1405 chip is as follows: the voltage division that will import the LB1405 chip is 5 voltage strength grades, and each voltage ratio can detect voltage in a certain scope than driver.As, the voltage of input LB1405 chip is 10v, then first voltage ratio can detect the voltage of 0v to 2v than driver; Second voltage ratio can detect the voltage of 2v to 4v than driver; Tertiary voltage comparison driver can detect the voltage of 4v to 6v; The 4th voltage ratio can detect the voltage of 6v to 8v than driver; The 5th voltage ratio can detect the voltage of 8v to 10v than driver.
Each voltage ratio connects a LED than driver, when the voltage of importing is in the range of voltage values that certain voltage ratio detects than driver, then corresponding LED can be luminous, as when input voltage is 3v, then second voltage ratio can detect this input voltage than driver, and is luminous than the LED meeting that driver is connected with second voltage ratio.
In this circuit checker, C is a filter capacitor, and R1 and R2 are the sampling divider resistance, and the resistance ratio of R1 and R2 is 1: 10, and then the intrinsic standoff ratio of R1 and R2 is 1: 10.As shown in Figure 1, a end points of R1 is connected with the voltage input end of LB1405 chip with the b end points of R2.The LB1405 chip is also external slide rheostat W1 and slide rheostat W2, this slide rheostat W1 and slide rheostat W2 are used for the highest detection voltage of LB1405 chip and the highest reference voltage of circuit to be detected are mated, and the lowest detection voltage of LB1405 chip and the minimum reference voltage of circuit to be detected are mated.Wherein, the highest detection voltage of LB1405 chip is that the LB1405 chip can detected ceiling voltage, and the lowest detection voltage of LB1405 chip is that the LB1405 chip can detected minimum voltage.The highest reference voltage of circuit to be detected is the maximum voltage value in the circuit to be detected, and the minimum reference voltage of circuit to be detected is the minimum voltage value in the circuit to be detected, and this highest reference voltage and minimum reference voltage can directly obtain in circuit to be detected.
Before circuit checker uses, need debug so that the detection voltage of LB1405 chip and the reference voltage of circuit to be detected are mated, debugging comprises following two steps:
The first step, the slide of slide rheostat W2 is placed the centre position, contact modules 1 inserts the highest reference voltage of circuit to be detected, by regulating slide rheostat W1, make the 5th voltage ratio luminous just, thus the highest reference voltage of circuit to be detected and the highest detection voltage of LB1405 chip are mated than the LED that driver connects.
Second step, contact modules 1 inserts the minimum reference voltage of circuit to be detected, by regulating slide rheostat W2, make first voltage ratio luminous just than the LED that driver connects, thus the minimum reference voltage of circuit to be detected and the lowest detection voltage of LB1405 chip are mated.
After above-mentioned debugging step was finished, according to the principle of work of LB1405 chip as can be known, to the highest reference voltage range, the LB1405 chip can detect the voltage strength grade of this circuit to be detected at the minimum reference voltage of circuit to be detected.
When this circuit checker detected, at first two pins by contact modules 1 were overlapped on the positive and negative electrode of circuit to be detected.The testing staff is that red light is bright or green light is bright by observing in the device for detecting positive and negative electrodes, just can know the positive-negative polarity of circuit to be detected, and is luminous by observing which LED that is connected with the LB1405 chip, just can know the voltage strength grade of circuit.
In addition, the circuit checker that the embodiment of the invention provides, circuit structure is fairly simple, therefore can make the very little detecting device of volume, in some special-purpose Circuits System such as mining industry supervisory system, not only can satisfy the demand that positive-negative polarity and voltage strength grade to circuit detect, and can offer convenience for the testing staff.
The circuit checker that present embodiment provides, positive-negative polarity and the voltage strength grade that can treat testing circuit detect, and circuit structure is simple, and volume is less, and the testing staff is used very easily.Has very high practicality.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a circuit checker is characterized in that, comprising: contact modules, both positive and negative polarity detection module and voltage strength detection module;
Described contact modules comprises two contact pins, and described contact pin is respectively applied for the positive pole and the negative pole of contact circuit to be detected;
Described both positive and negative polarity detection module is connected with described contact modules, is used to detect the positive-negative polarity of described circuit to be detected;
Described voltage strength detection module is connected with described contact modules, is used to detect the voltage strength grade of described circuit to be detected, and described voltage strength grade is corresponding with default range of voltage values.
2. circuit checker according to claim 1, it is characterized in that, described both positive and negative polarity detection module comprises anodal testing circuit and negative pole testing circuit, when after described contact modules contacts circuit to be detected, forming forward circuit, then described anodal testing circuit conducting, described negative pole testing circuit ends; When after described contact modules contacts circuit to be detected, forming negater circuit, the conducting of then described negative pole testing circuit, described anodal testing circuit ends.
3. circuit checker according to claim 2 is characterized in that, described anodal testing circuit comprises a light emitting diode, and described negative pole testing circuit comprises a light emitting diode.
4. circuit checker according to claim 1 is characterized in that, described voltage strength detection module comprises that at least two voltage ratios are than driver.
5. circuit checker according to claim 4 is characterized in that, described voltage strength detection module comprises light emitting diode, and each described light emitting diode connects a described voltage ratio than driver; The negative pole end of described light emitting diode is connected than driver with described voltage ratio, and positive terminal is connected with described contact modules.
6. circuit checker according to claim 1 is characterized in that, described voltage strength detection module comprises the LB1405 chip, and described LB1405 chip is made up of than driver 5 voltage ratios.
7. circuit checker according to claim 1, it is characterized in that, described voltage strength detection module also comprises slide rheostat, described slide rheostat is connected with described LB 1405 chips, be used for the highest detection voltage of LB1405 chip and the highest reference voltage of circuit to be detected are mated, the lowest detection voltage of LB1405 chip and the minimum reference voltage of circuit to be detected are mated.
8. circuit checker according to claim 1 is characterized in that, described contact pin comprises probe and/or crocodile clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010002319XA CN102121955A (en) | 2010-01-07 | 2010-01-07 | Circuit detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010002319XA CN102121955A (en) | 2010-01-07 | 2010-01-07 | Circuit detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102121955A true CN102121955A (en) | 2011-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010002319XA Pending CN102121955A (en) | 2010-01-07 | 2010-01-07 | Circuit detection device |
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| Country | Link |
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| CN (1) | CN102121955A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439662A (en) * | 2013-08-16 | 2013-12-11 | 崧顺电子（深圳）有限公司 | Low-cost battery electricity quantity detection circuit |
| CN109564264A (en) * | 2018-10-31 | 2019-04-02 | 深圳市汇顶科技股份有限公司 | Test macro |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206596U (en) * | 1986-12-18 | 1987-09-12 | 许兆安 | Multipurpose voltage detector |
| CN2187795Y (en) * | 1994-01-23 | 1995-01-18 | 阚玉里 | Multi-function electricity tester |
| CN201017010Y (en) * | 2007-03-14 | 2008-02-06 | 刘鑫 | Vehicle malfunction detection pens |
| CN201096873Y (en) * | 2007-08-22 | 2008-08-06 | 邹力华 | Dry battery voltage detection device based on voltage method |
| CN201583587U (en) * | 2010-01-07 | 2010-09-15 | 淮南矿业(集团)有限责任公司 | Circuit detecting device |
-
2010
- 2010-01-07 CN CN201010002319XA patent/CN102121955A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206596U (en) * | 1986-12-18 | 1987-09-12 | 许兆安 | Multipurpose voltage detector |
| CN2187795Y (en) * | 1994-01-23 | 1995-01-18 | 阚玉里 | Multi-function electricity tester |
| CN201017010Y (en) * | 2007-03-14 | 2008-02-06 | 刘鑫 | Vehicle malfunction detection pens |
| CN201096873Y (en) * | 2007-08-22 | 2008-08-06 | 邹力华 | Dry battery voltage detection device based on voltage method |
| CN201583587U (en) * | 2010-01-07 | 2010-09-15 | 淮南矿业(集团)有限责任公司 | Circuit detecting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439662A (en) * | 2013-08-16 | 2013-12-11 | 崧顺电子（深圳）有限公司 | Low-cost battery electricity quantity detection circuit |
| CN109564264A (en) * | 2018-10-31 | 2019-04-02 | 深圳市汇顶科技股份有限公司 | Test macro |
| CN109564264B (en) * | 2018-10-31 | 2021-05-14 | 深圳市汇顶科技股份有限公司 | Test system |
| US11486955B2 (en) | 2018-10-31 | 2022-11-01 | Shenzhen GOODIX Technology Co., Ltd. | Test system |
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Application publication date: 20110713 |