CN113219271B - Detection instrument and detection method for non-contact sensor - Google Patents
Detection instrument and detection method for non-contact sensor Download PDFInfo
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- CN113219271B CN113219271B CN202110350501.2A CN202110350501A CN113219271B CN 113219271 B CN113219271 B CN 113219271B CN 202110350501 A CN202110350501 A CN 202110350501A CN 113219271 B CN113219271 B CN 113219271B
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
Abstract
The invention provides a detecting instrument and a detecting method of a non-contact sensor, wherein the detecting instrument comprises a rectifying unit, a voltage regulating unit, a voltage display unit, a sensor signal receiving unit, a relay, a sensor output mode switching switch and a working signal lamp, wherein the rectifying unit is used for converting alternating voltage into direct voltage, the voltage regulating unit is used for obtaining voltage required by the working of the sensor, the voltage display unit shows a voltage value, the sensor signal receiving unit is connected with a positive electrode lead, a negative electrode lead and a relay coil to enable the detected non-contact sensor to be connected with the detecting instrument, the sensor output mode switching switch is a double-throw switch, corresponds to NPN output type test when the positive electrode lead is connected, corresponds to PNP output type test when the negative electrode lead is connected, and judges whether the switching of the sensor output mode switching switch is correct or not through the working signal lamp. The instrument and the method can be used for detecting whether various sensor output types are damaged or not.
Description
Technical Field
The invention belongs to the technical field of instrument detection, and particularly relates to a detection instrument without a contact sensor and a detection method.
Background
The non-contact sensor is a non-contact detection sensor and is widely applied to safety detection, position detection and the like of various automatic equipment, mechanical equipment and the like at present. At present, no inspection instrument for the non-contact detection sensor exists in the markets at home and abroad.
When the touchless sensor is used for years, a new touchless sensor needs to be replaced to prevent potential safety hazards and faults of mechanical equipment, but unnecessary difficulties and trouble are added when the type of the touchless sensor is not determined.
The non-contact sensor fails in the use process, whether the non-contact sensor is damaged cannot be distinguished, and a new non-contact sensor is often purchased under the condition that the non-contact sensor is not determined to be good or bad, so that production is delayed, and maintenance cost is increased.
Disclosure of Invention
In order to overcome the defects in the prior art, the inventor performs intensive research, provides a detection instrument and a detection method for a non-contact sensor, and solves the problem that the type and whether the non-contact sensor is damaged cannot be distinguished.
The technical scheme provided by the invention is as follows:
the detecting instrument comprises a shell and circuit components arranged on a circuit board or a shell panel inside the shell, wherein the circuit components comprise a rectifying unit, a voltage regulating unit, a voltage display unit, a sensor connecting unit, a relay, a sensor output mode change-over switch and a working signal lamp, the rectifying unit comprises a main power switch, a control transformer and a bridge rectifier, the main power switch is used for controlling the on-off of the rectifying unit and an alternating current power supply, the control transformer is used for connecting the alternating current power supply and the bridge rectifier, and the bridge rectifier is in a bridge form by using 4 identical diodes to convert input alternating current into direct current;
the voltage regulating unit comprises a voltage regulating tube, a potentiometer and a constant resistor, wherein an anode lead and a cathode lead of the bridge rectifier are respectively connected with the voltage regulating tube and the potentiometer and then connected to the anode and the cathode of a test voltage input end of the voltage display unit;
the sensor connecting unit comprises a sensor positive electrode access end, a sensor negative electrode access end and a sensor signal feedback end access end, wherein the sensor positive electrode access end and the sensor negative electrode access end are used for respectively connecting a positive electrode end and a negative electrode end of a measured non-contact sensor to a positive electrode lead and a negative electrode lead after the voltage regulating unit, and receiving voltage output after voltage regulation; the sensor signal feedback end access end is used for connecting the signal feedback end of the measured non-contact sensor to one end of the relay coil;
the sensor output mode change-over switch is a single-pole double-throw switch, the movable end is connected to the other end of the relay coil, the two fixed ends are respectively connected to the positive electrode lead and the negative electrode lead, when the single-pole double-throw switch is connected with the positive electrode lead, the NPN output type test is corresponding, and when the single-pole double-throw switch is connected with the negative electrode lead, the PNP output type test is corresponding, so that the measured non-contact sensor is determined to be a PNP output type sensor or an NPN output type sensor;
the working signal lamp is connected to the alternating current, and is switched on and off by the switching-on and switching-off control circuit of the relay contact.
In a second aspect, a method for detecting a touchless sensor includes the steps of:
pressing the main power switch to close, starting the rectifying unit to work, and converting the alternating current voltage into direct current voltage;
adjusting the potentiometer until the digital voltage display meter displays the working voltage of the non-contact sensor;
correspondingly connecting a power line and a signal line of a sensor to be detected to an anode wiring terminal, a cathode wiring terminal and a feedback signal wiring terminal respectively, and connecting the power line and the signal line of the sensor to be detected to a sensor anode access end, a sensor cathode access end and a sensor signal feedback end access end of a circuit board respectively through internal leads;
placing a triggering medium in a signal sensing area of the measured non-contact sensor to trigger a signal receiving unit in the measured non-contact sensor;
when the sensor output mode change-over switch is switched correctly, the relay coil connected with the signal feedback end of the measured non-contact sensor controls the relay contact to be attracted, the working signal lamp acts, at the moment, the square can judge that the measured non-contact sensor is good, otherwise, the sensor is damaged, and meanwhile, the position indicated by the sensor output mode change-over switch is of a sensor type.
According to the detection instrument and the detection method of the non-contact sensor, provided by the invention, the detection instrument and the detection method have the following beneficial effects:
the detecting instrument and the detecting method of the non-contact sensor provided by the invention can convert alternating voltage into direct voltage by adopting a bridge rectification technology, can realize stepless voltage regulation in rated voltage by adopting the voltage regulating unit, can realize effective connection of the detected non-contact sensor and the detecting instrument by adopting the sensor connecting unit, can realize direct verification of the output type and damage or not of the detected non-contact sensor by adopting the sensor output mode change-over switch and the working signal lamp, are simple in device, are accurate and effective in test, and are suitable for testing the output types and the damage or not of the eddy current non-contact sensor, the capacitive non-contact sensor, the Hall non-contact sensor and the photoelectric non-contact sensor.
Drawings
FIG. 1 is an electrical schematic diagram of a touch sensor-less detection instrument according to the present invention;
fig. 2 is a diagram of an operation panel of a detecting instrument without a touch sensor according to the present invention.
Description of the reference numerals
The power supply comprises a 1-main power switch Guan Kongwei, a 2-direct current voltmeter hole site, a 3-sensor output mode switching switch hole site, a 4-working signal lamp hole site, a 5-potentiometer hole site, a 6-sensor feedback signal wiring terminal, a 7-sensor negative electrode wiring terminal, an 8-sensor positive electrode wiring terminal, a 9-main power switch, a 10-control transformer, an 11-bridge rectifier, a 12-potentiometer, a 13-voltage display unit, a 14-measured non-contact sensor, a 15-sensor output mode switching switch, a 16-working signal lamp and a 17-relay.
Detailed Description
The features and advantages of the present invention will become more apparent and clear from the following detailed description of the invention.
According to a first aspect of the present invention, as shown in fig. 1 and 2, there is provided a contact-free sensor detection apparatus, including a casing and circuit components mounted on a circuit board inside the casing or on a panel of the casing, the circuit components including a rectifying unit, a voltage regulating unit, a voltage display unit 13, a sensor connection unit, a relay 17, a sensor output mode switching switch 15 and a working signal lamp 16, the rectifying unit including a main power switch 9, a control transformer (TC 1) 10 and a bridge rectifier 11, the main power switch 9 being used for controlling on-off of the rectifying unit and an AC power supply (AC 220), the control transformer 10 being used for connecting the AC power supply and the bridge rectifier 11, the bridge rectifier 11 being connected in a bridge form by 4 identical diodes (D1-D4) to convert an input AC power into a dc power;
the bridge rectifier 11 can lead the negative pole to the load by utilizing the diode guiding function in the negative half cycle, when the power supply is in the positive half cycle, the D1 and the D3 are conducted, the D2 and the D4 are applied with reverse voltages to cut off the reverse voltages, the current finally returns to the TC1 secondary voltage through the D1 to the C1 and the D3 through the TC1 secondary voltage, and half of the rectified voltage is obtained on the load. When the power supply is in a negative half cycle, the D2 and the D4 are conducted, the D1 and the D3 are applied with reverse voltages to cut off the reverse voltages, the current finally returns to the TC1 secondary voltage through the TC1 secondary voltage, the current passes through the D2 to the C1 and then the D4, and the other half of rectified voltage is obtained on the load;
the voltage regulating unit comprises a voltage regulating tube (317), a potentiometer (RP 1) 12 and a constant resistor R1, wherein an anode lead and a cathode lead of the bridge rectifier 11 are respectively connected with the voltage regulating tube and the potentiometer 12 and then connected to the anode and the cathode of a test voltage input end of the voltage display unit 13, an alternating current access end of the voltage display unit 13 is connected to an alternating current power supply, the required output voltage is obtained by adjusting the resistance value of the potentiometer access circuit, and the output voltage value is displayed on the voltage display unit 13;
the sensor connecting unit comprises a sensor positive electrode access end, a sensor negative electrode access end and a sensor signal feedback end access end, wherein the sensor positive electrode access end and the sensor negative electrode access end are used for respectively connecting a positive electrode end (adopting a palm wire) and a negative electrode end (adopting a yellow wire) of the measured non-contact sensor 14 to a positive electrode lead wire and a negative electrode lead wire after the voltage regulating unit 12, and receiving voltage output after voltage regulation; the sensor signal feedback end access end is used for connecting the signal feedback end (black line) of the measured non-contact sensor 14 to one end of the coil of the relay 17;
the sensor output mode change-over switch 15 is a single-pole double-throw switch, the movable end is connected to the other end of the coil, the two fixed ends are respectively connected to the positive electrode lead and the negative electrode lead, when the single-pole double-throw switch is connected with the positive electrode lead, the NPN output type test is corresponding, and when the single-pole double-throw switch is connected with the negative electrode lead, the PNP output type test is corresponding;
the working signal lamp 16 is connected to the alternating current, and the on-off of the circuit is controlled through the on-off of the contact of the relay 17, namely whether the working signal lamp 16 acts or not.
In the present invention, the bridge rectifier 11 is connected with a first filter capacitor C1, and the voltage regulating unit is connected with a second filter capacitor C2.
In the present invention, the voltage display unit 13 is a digital voltage display meter.
In the invention, a main power switch hole site 1, a direct-current voltmeter hole site 2, a sensor output mode switching switch hole site 3, a working signal lamp hole site 4 and a potentiometer hole site 5 are arranged on a panel of a detection instrument shell, and correspond to the installation positions of a main power switch 9, a direct-current voltmeter 13, a sensor output mode switching switch 15, a working signal lamp 16 and a potentiometer on a circuit board respectively, and are used for installing and positioning the above devices on the shell; the detecting instrument shell is provided with a sensor positive electrode binding post 8, a sensor negative electrode binding post 7 and a feedback signal binding post 6, and the sensor positive electrode binding post, the sensor negative electrode binding post and the sensor signal feedback end are respectively connected to a sensor positive electrode access end, a sensor negative electrode access end and a sensor signal feedback end access end of a circuit board through leads and serve as intermediate connecting elements of the sensor positive electrode access end, the sensor negative electrode access end and the signal feedback end access end and a to-be-detected non-contact sensor positive electrode end, a to-be-detected non-contact sensor negative electrode end and a to-be-detected non-contact sensor signal feedback end. The circuit components mounted on the housing panel and the housing panel of the detecting instrument together form an operation panel of the detecting instrument.
In the invention, the detecting instrument of the touchless sensor is suitable for testing the output types of the eddy current touchless sensor, the capacitive touchless sensor, the Hall touchless sensor and the photoelectric touchless sensor and whether the sensor is damaged or not.
According to a second aspect of the present invention, there is provided a method of detecting a touchless sensor, comprising the steps of:
pressing the main power switch 9 to be closed, and starting the rectifying unit to work so as to convert the alternating voltage into direct voltage;
adjusting the potentiometer 12 until the digital voltage display table 13 displays the working voltage (such as 24V) of the non-contact sensor;
the power line and the signal line of the sensor to be detected are respectively and correspondingly connected to the positive electrode wiring terminal 8, the negative electrode wiring terminal 7 and the feedback signal wiring terminal 6, and are respectively connected to the positive electrode access end, the negative electrode access end and the feedback signal access end of the sensor of the circuit board through internal leads;
placing a triggering medium in the signal sensing area of the measured touchless sensor 14 to trigger the signal receiving unit in the measured touchless sensor 14;
when the sensor output mode change-over switch 15 is switched correctly, the relay coil connected with the signal feedback end of the measured non-contact sensor 14 controls the relay contact to be attracted, the working signal lamp 16 acts, at the moment, the measured non-contact sensor can be judged to be good, otherwise, the sensor is damaged, and meanwhile, the position indicated by the sensor output mode change-over switch 15 is of a sensor type.
The invention has been described in detail in connection with the specific embodiments and exemplary examples thereof, but such description is not to be construed as limiting the invention. It will be understood by those skilled in the art that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, and these fall within the scope of the present invention. The scope of the invention is defined by the appended claims.
What is not described in detail in the present specification is a well known technology to those skilled in the art.
Claims (6)
1. The detecting instrument without the contact sensor is characterized by comprising a shell and circuit components arranged on a circuit board or a shell panel inside the shell, wherein the circuit components comprise a rectifying unit, a voltage regulating unit, a voltage display unit (13), a sensor connecting unit, a relay (17), a sensor output mode switching switch (15) and a working signal lamp (16), the rectifying unit comprises a main power switch (9), a control transformer (10) and a bridge rectifier (11), the main power switch (9) is used for controlling the switching-on and switching-off of the rectifying unit and an alternating current power supply, the control transformer (10) is used for connecting the alternating current power supply and the bridge rectifier (11), and the bridge rectifier (11) is formed by connecting 4 identical diodes into a bridge mode to convert input alternating current into direct current;
the voltage regulating unit comprises a voltage regulating tube, a potentiometer (12) and a constant resistor, wherein an anode lead and a cathode lead of the bridge rectifier (11) are respectively connected with the voltage regulating tube and the potentiometer (12) and then connected to the anode and the cathode of a test voltage input end of the voltage display unit (13), an alternating current access end of the voltage display unit (13) is connected to an alternating current power supply, the required output voltage is obtained by adjusting the resistance value of an access circuit of the potentiometer, and the output voltage value is displayed on the voltage display unit (13);
the sensor connecting unit comprises a sensor positive electrode access end, a sensor negative electrode access end and a sensor signal feedback end access end, wherein the sensor positive electrode access end and the sensor negative electrode access end are used for respectively connecting a positive electrode end and a negative electrode end of a measured non-contact sensor (14) to a positive electrode lead wire and a negative electrode lead wire of the voltage regulating unit (12) and receiving voltage output after voltage regulation; the sensor signal feedback end access end is used for connecting the signal feedback end of the measured non-contact sensor (14) to one end of a coil of the relay (17);
the sensor output mode change-over switch (15) is a single-pole double-throw switch, the movable end is connected to the other end of the relay coil, the two fixed ends are respectively connected to the positive lead and the negative lead, when the single-pole double-throw switch is connected with the positive lead, the NPN output type test is corresponding, and when the single-pole double-throw switch is connected with the negative lead, the PNP output type test is corresponding;
the working signal lamp (16) is connected to alternating current, and is switched on and off by a switching-on and switching-off control circuit of a contact of the relay (17).
2. The touch sensor-less detecting instrument according to claim 1, wherein a first filter capacitor is connected to the bridge rectifier (11), and a second filter capacitor is connected to the voltage regulating unit.
3. The touch sensor-less detection instrument according to claim 1, wherein the voltage display unit (13) is a digital voltage display meter.
4. The detecting instrument without the contact sensor according to claim 1, wherein a main power switch hole site (1), a direct-current voltmeter hole site (2), a sensor output mode switching switch hole site (3), a working signal lamp hole site (4) and a potentiometer hole site (5) are arranged on a panel of the detecting instrument shell, and correspond to the installation positions of the main power switch (9), the direct-current voltmeter (13), the sensor output mode switching switch (15), the working signal lamp (16) and the potentiometer on a circuit board respectively, and are used for installing and positioning the above devices on the shell; the detecting instrument is characterized in that a sensor positive electrode binding post (8), a sensor negative electrode binding post (7) and a feedback signal binding post (6) are arranged on the detecting instrument shell and are connected to a sensor positive electrode access end, a sensor negative electrode access end and a signal feedback end access end of the circuit board through leads respectively to serve as intermediate connecting elements of the sensor positive electrode access end, the sensor negative electrode access end and the signal feedback end access end and the to-be-detected non-contact sensor positive electrode, negative electrode end and the signal feedback end.
5. The touchless sensor of claim 1, wherein the measured touchless sensor (14) is an eddy current touchless sensor, a capacitive touchless sensor, a hall touchless sensor, or a photoelectric touchless sensor.
6. A method for detecting a touchless sensor using the touchless sensor of any of claims 1 to 5, comprising the steps of:
the main power switch (9) is pressed to be closed, the rectifying unit starts to work, and the alternating current voltage is converted into direct current voltage;
adjusting the potentiometer (12) until the digital voltage display meter (13) displays the working voltage of the non-contact sensor;
the power line and the signal line of the sensor to be detected are respectively and correspondingly connected to an anode wiring terminal (8), a cathode wiring terminal (7) and a feedback signal wiring terminal (6), and are respectively connected to the anode access end, the cathode access end and the feedback signal access end of the sensor of the circuit board through internal leads;
placing a triggering medium in a signal sensing area of the measured touchless sensor (14) to trigger a signal receiving unit in the measured touchless sensor (14);
and when the sensor output mode change-over switch (15) is switched correctly, a relay coil connected with a signal feedback end of the measured non-contact sensor (14) controls the relay contact to be attracted, the working signal lamp (16) acts, at the moment, the measured non-contact sensor can be judged to be good, otherwise, the sensor is damaged, and meanwhile, the position indicated by the sensor output mode change-over switch (15) is of a sensor type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110350501.2A CN113219271B (en) | 2021-03-31 | 2021-03-31 | Detection instrument and detection method for non-contact sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110350501.2A CN113219271B (en) | 2021-03-31 | 2021-03-31 | Detection instrument and detection method for non-contact sensor |
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| Publication Number | Publication Date |
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| CN113219271A CN113219271A (en) | 2021-08-06 |
| CN113219271B true CN113219271B (en) | 2023-08-29 |
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| CN202110350501.2A Active CN113219271B (en) | 2021-03-31 | 2021-03-31 | Detection instrument and detection method for non-contact sensor |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19911526A1 (en) * | 1999-03-16 | 2000-09-21 | Bosch Gmbh Robert | Method for monitoring sensor for initiating monitoring phase of evaluation unit by setting signal of given trigger level on output line may be detected in sensor |
| CN202171469U (en) * | 2011-07-01 | 2012-03-21 | 深圳职业技术学院 | Sensor tester |
| CN202614856U (en) * | 2011-11-02 | 2012-12-19 | 山西太钢不锈钢股份有限公司 | Sensor testing device |
-
2021
- 2021-03-31 CN CN202110350501.2A patent/CN113219271B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19911526A1 (en) * | 1999-03-16 | 2000-09-21 | Bosch Gmbh Robert | Method for monitoring sensor for initiating monitoring phase of evaluation unit by setting signal of given trigger level on output line may be detected in sensor |
| CN202171469U (en) * | 2011-07-01 | 2012-03-21 | 深圳职业技术学院 | Sensor tester |
| CN202614856U (en) * | 2011-11-02 | 2012-12-19 | 山西太钢不锈钢股份有限公司 | Sensor testing device |
Non-Patent Citations (1)
| Title |
|---|
| 微电容式传感器信号检测电路的设计;刘少楠;李梅梅;孟飞;马昂;苏明磊;;电子器件(03);全文 * |
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| CN113219271A (en) | 2021-08-06 |
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