CN110568296A - Digital quantity sensor signal detection device - Google Patents
Digital quantity sensor signal detection device Download PDFInfo
- Publication number
- CN110568296A CN110568296A CN201910950533.9A CN201910950533A CN110568296A CN 110568296 A CN110568296 A CN 110568296A CN 201910950533 A CN201910950533 A CN 201910950533A CN 110568296 A CN110568296 A CN 110568296A
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- Prior art keywords
- signal detection
- detection circuit
- digital quantity
- quantity sensor
- photoelectric coupler
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- 238000001514 detection method Methods 0.000 title claims abstract description 47
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 10
- 229910052744 lithium Inorganic materials 0.000 claims description 10
- 230000007547 defect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention relates to a signal detection device, in particular to a digital sensor signal detection device, which comprises a power supply unit, a PNP signal detection circuit and an NPN signal detection circuit, wherein the power supply unit supplies power to the PNP signal detection circuit, the NPN signal detection circuit and a digital sensor to be detected; the technical scheme provided by the invention can effectively overcome the defect that the signal of the digital quantity sensor cannot be quickly and effectively detected in the prior art.
Description
Technical Field
the invention relates to a signal detection device, in particular to a signal detection device of a digital quantity sensor.
Background
In an automatic control system of an industrial production line, a plurality of digital quantity sensors are often installed to detect various digital signals, such as various magnetic switches, photoelectric switches, proximity switches, and the like. In the process of debugging an automatic control system, checking the IO control signal is important preparation work before debugging, and whether the IO control signal is correct or not relates to the stable operation of the control system.
At present, the method adopted by electrical personnel when checking digital quantity input signals is to wait for the wiring of the whole control system to be finished, and the method can be carried out only after the field has the conditions of electrification and ventilation. In some project sites, the system may not have the condition of checking the IO signal (for example, the system is not powered on, the connection from the sensor to the control cabinet is not completed, etc.) due to factors of various aspects, which brings difficulty to the debugging work, increases the debugging time of the system, and further affects the whole project cycle.
Some digital sensors need to be connected with a PLC (programmable logic controller), so that whether the installation positions of the sensors are correct or not and whether the detection signals of the sensors are normal or not can be judged. For example, the magnetic switch must be installed at a position close to a magnetic ring of the cylinder, the magnetic switch can detect the magnetic ring and output a signal, the magnetic ring is usually installed on a piston inside the cylinder, and the accurate position of the magnetic ring is difficult to judge from the surface, so that the position of the magnetic switch cannot be determined once when the magnetic switch is installed, adjustment is performed when IO signals are checked at a later stage, and work time is delayed.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects in the prior art, the invention provides a digital quantity sensor signal detection device which can effectively overcome the defect that the signal of the digital quantity sensor cannot be quickly and effectively detected in the prior art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
The utility model provides a digital quantity sensor signal detection device, includes power supply unit, PNP signal detection circuit and NPN signal detection circuit, power supply unit does PNP signal detection circuit, NPN signal detection circuit and digital quantity sensor power supply that awaits measuring, PNP signal detection circuit, NPN signal detection circuit all include input circuit module, output circuit module, input circuit module connects output circuit module.
Preferably, the input circuit module in the PNP signal detection circuit includes a current limiting resistor R1 and a photocoupler U1, and the output circuit module in the PNP signal detection circuit includes a BUZZER1, an indicator light LED1 and a current limiting resistor R2.
Preferably, the current-limiting resistor R1 is connected to an input end of the photocoupler U1, one output end and the other input end of the photocoupler U1 are both grounded, and the other output end of the photocoupler U1 is connected to the BUZZER1 and the indicator light LED1 which are connected in parallel.
Preferably, an input circuit module in the NPN signal detection circuit includes a current limiting resistor R3 and a photocoupler U2, and an output circuit module in the NPN signal detection circuit includes a BUZZER2, an indicator light LED2 and a current limiting resistor R4.
Preferably, the current-limiting resistor R3 is connected to one input end of the photocoupler U2, the other input end of the photocoupler U2 is connected to the power supply unit, one output end of the photocoupler U2 is grounded, and the other output end of the photocoupler U2 is connected to the BUZZER2 and the indicator light LED2 which are connected in parallel.
Preferably, the power supply unit comprises a terminal plug P1, a lithium battery pack PW1 and a power adapter X1 for converting 220V on the terminal plug P1 into 24V to charge the lithium battery pack PW 1.
(III) advantageous effects
Compared with the prior art, the signal detection device for the digital quantity sensor, provided by the invention, has the advantages that when the input side of the photoelectric coupler has the signal of the digital quantity sensor to be detected, the output side is conducted, so that the buzzer and the indicator lamp carry out acousto-optic reminding, and the lithium battery pack in the power supply unit can provide power for the digital quantity sensor to be detected, so that the signal of the digital quantity sensor can be quickly and effectively detected, and a constructor can detect the output signal of the sensor through the signal detection device when installing the digital quantity sensor to confirm whether the installation position of the sensor is correct, avoid readjustment of the installation position in the later period and improve the working efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram of a PNP signal detection circuit according to the present invention;
FIG. 2 is a schematic diagram of an NPN signal detection circuit according to the present invention;
Fig. 3 is a schematic diagram of a power supply unit according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A digital quantity sensor signal detection device is shown in figures 1 to 3 and comprises a power supply unit, a PNP signal detection circuit and an NPN signal detection circuit, wherein the power supply unit supplies power to the PNP signal detection circuit, the NPN signal detection circuit and a digital quantity sensor to be detected, the PNP signal detection circuit and the NPN signal detection circuit respectively comprise an input circuit module and an output circuit module, and the input circuit module is connected with the output circuit module.
An input circuit module in the PNP signal detection circuit comprises a current-limiting resistor R1 and a photoelectric coupler U1, and an output circuit module in the PNP signal detection circuit comprises a BUZZER BUZZER1, an indicator light LED1 and a current-limiting resistor R2.
The current-limiting resistor R1 is connected with an input end of a photoelectric coupler U1, one output end and the other input end of the photoelectric coupler U1 are both grounded, and the other output end of the photoelectric coupler U1 is connected with a BUZZER1 and an indicator light LED1 which are connected in parallel.
An input circuit module in the NPN signal detection circuit comprises a current-limiting resistor R3 and a photoelectric coupler U2, and an output circuit module in the NPN signal detection circuit comprises a BUZZER BUZZER2, an indicator light LED2 and a current-limiting resistor R4.
The current-limiting resistor R3 is connected with one input end of a photoelectric coupler U2, the other input end of the photoelectric coupler U2 is connected with the power supply unit, one output end of the photoelectric coupler U2 is grounded, and the other output end of the photoelectric coupler U2 is connected with a BUZZER2 and an indicator light LED2 which are connected in parallel.
The power supply unit comprises a terminal plug P1, a lithium battery pack PW1 and a power adapter X1 which is used for converting 220V on the terminal plug P1 into 24V to charge the lithium battery pack PW 1.
Working principles of the PNP signal detection circuit and the NPN signal detection circuit are as follows: when photoelectric coupler's input side has digital quantity sensor's that awaits measuring signal, its output side switches on for buzzer, pilot lamp carry out reputation and remind, and lithium cell group PW1 among the power supply unit can provide the power to digital quantity sensor that awaits measuring, thereby can effectively detect digital quantity sensor's signal fast.
In the technical scheme of the application, the power adapter X1 is a mature electronic product in the market, can be directly selected, and is not used for manufacturing the power adapter X1 independently. 18650 high-performance batteries are selected as the lithium battery pack PW1, the battery voltage is 3.7V, the whole lithium battery pack PW1 is formed by connecting 6 batteries in series, the system voltage is 3.7 × 6 ═ 22.2V, and the system voltage can be regarded as DC 24V.
the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (6)
1. a digital quantity sensor signal detection device characterized by: the digital sensor to be detected is powered by the power supply unit, the PNP signal detection circuit, the NPN signal detection circuit and the digital sensor to be detected are respectively provided with an input circuit module and an output circuit module, and the input circuit module is connected with the output circuit module.
2. The digital quantity sensor signal detecting device according to claim 1, characterized in that: an input circuit module in the PNP signal detection circuit comprises a current-limiting resistor R1 and a photoelectric coupler U1, and an output circuit module in the PNP signal detection circuit comprises a BUZZER BUZZER1, an indicator light LED1 and a current-limiting resistor R2.
3. The digital quantity sensor signal detecting device according to claim 2, characterized in that: the current-limiting resistor R1 is connected with one input end of the photoelectric coupler U1, one output end and the other input end of the photoelectric coupler U1 are both grounded, and the other output end of the photoelectric coupler U1 is connected with the BUZZER1 and the indicator light LED1 which are connected in parallel.
4. The digital quantity sensor signal detecting device according to claim 1, characterized in that: an input circuit module in the NPN signal detection circuit comprises a current-limiting resistor R3 and a photoelectric coupler U2, and an output circuit module in the NPN signal detection circuit comprises a BUZZER BUZZER2, an indicator light LED2 and a current-limiting resistor R4.
5. The digital quantity sensor signal detecting device according to claim 4, characterized in that: the current-limiting resistor R3 is connected with one input end of the photoelectric coupler U2, the other input end of the photoelectric coupler U2 is connected with a power supply unit, one output end of the photoelectric coupler U2 is grounded, and the other output end of the photoelectric coupler U2 is connected with the BUZZER BUZZER2 and the indicator light LED2 which are connected in parallel.
6. The digital quantity sensor signal detecting device according to claim 1, characterized in that: the power supply unit comprises a terminal plug P1, a lithium battery pack PW1 and a power adapter X1 which is used for converting 220V on the terminal plug P1 into 24V to charge the lithium battery pack PW 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910950533.9A CN110568296A (en) | 2019-10-08 | 2019-10-08 | Digital quantity sensor signal detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910950533.9A CN110568296A (en) | 2019-10-08 | 2019-10-08 | Digital quantity sensor signal detection device |
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| Publication Number | Publication Date |
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| CN110568296A true CN110568296A (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910950533.9A Pending CN110568296A (en) | 2019-10-08 | 2019-10-08 | Digital quantity sensor signal detection device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201084002Y (en) * | 2007-09-30 | 2008-07-09 | 沈之柱 | PLC digital quantity input interface circuit |
| CN204301763U (en) * | 2014-12-23 | 2015-04-29 | 深圳市志奋领科技有限公司 | A kind of Multifunction sensor tester |
| CN206523760U (en) * | 2017-02-24 | 2017-09-26 | 无锡气动技术研究所有限公司 | The general detection circuit of digital quantity input signal |
| CN108982897A (en) * | 2018-08-01 | 2018-12-11 | 华自科技股份有限公司 | Signal deteching circuit and measuring device and gear velocity-measuring system |
| CN210720613U (en) * | 2019-10-08 | 2020-06-09 | 安徽新境界自动化技术有限公司 | Digital quantity sensor signal detection device |
-
2019
- 2019-10-08 CN CN201910950533.9A patent/CN110568296A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201084002Y (en) * | 2007-09-30 | 2008-07-09 | 沈之柱 | PLC digital quantity input interface circuit |
| CN204301763U (en) * | 2014-12-23 | 2015-04-29 | 深圳市志奋领科技有限公司 | A kind of Multifunction sensor tester |
| CN206523760U (en) * | 2017-02-24 | 2017-09-26 | 无锡气动技术研究所有限公司 | The general detection circuit of digital quantity input signal |
| CN108982897A (en) * | 2018-08-01 | 2018-12-11 | 华自科技股份有限公司 | Signal deteching circuit and measuring device and gear velocity-measuring system |
| CN210720613U (en) * | 2019-10-08 | 2020-06-09 | 安徽新境界自动化技术有限公司 | Digital quantity sensor signal detection device |
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