CN213238763U - Double-channel independent measurement digital display type inductance micrometer - Google Patents
Double-channel independent measurement digital display type inductance micrometer Download PDFInfo
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- CN213238763U CN213238763U CN202022001714.8U CN202022001714U CN213238763U CN 213238763 U CN213238763 U CN 213238763U CN 202022001714 U CN202022001714 U CN 202022001714U CN 213238763 U CN213238763 U CN 213238763U
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Abstract
The utility model discloses a binary channels independent measurement digital display formula inductance micrometer, include: the first sensor and the second sensor are respectively connected with the sensing signal selector and the zero adjustment selector, the sensing signal selector and the zero adjustment selector are both connected with the signal processor, the signal processor is connected with the amplification factor selector, the amplification factor selector is respectively connected with the first sensing signal amplification factor adjuster and the second sensing signal amplification factor adjuster, the first sensing signal amplification factor adjuster and the second sensing signal amplification factor adjuster are both connected with the amplification factor adjuster, the amplification factor adjuster is connected with the amplification factor output device, and the amplification factor output device is connected with the digital display meter. Adopt the utility model discloses, can use two sensors simultaneously, two sensors are mutually totally independent, mutually noninterfere, and two sensors can accomplish two independent measurement items.
Description
Technical Field
The utility model relates to an inductance micrometer field especially relates to a binary channels independent measurement digital display formula inductance micrometer.
Background
An inductance micrometer is a high-accuracy measuring instrument for measuring the small displacement, which is characterized in that an axial or lateral inductance sensor (measuring head) converts the displacement into an electric signal, and the electric signal is measured and displayed by a display device. The inductance micrometer is divided into three forms of digital display, pointer type and electronic column type according to the difference of the display device. The digital display outline is shown in figure 1. The functions of the components indicated by the respective reference numbers in the figures are as follows: 1-a digital meter; 2-measurement function selection switch; 3-range change-over switch; 4-magnification adjustment knob; 5-zero adjustment knob; 6-axial measuring head.
The back panel of the digital display type inductance micrometer is provided with two sensor sockets, and the names of the two sockets are A and B respectively. The measurement function selection switch in fig. 1 has three positions, i.e., left, middle, and right. When the selector switch is in the middle gear, the measurement value of the sensor a is displayed; when the selector switch is in the left gear, the sum of the measured values of the sensor a and the sensor B is displayed; when the selector switch is in the right gear, the difference value of the measured values of the sensor A and the sensor B is displayed, and when the two sensors are simultaneously arranged, the digital display type inductance micrometer cannot independently display the value of the sensor B.
The digital display type inductance micrometer has two magnification adjusting knobs. Such as the 4-magnification adjustment knob in fig. 1. The effect of the two sensor magnification adjustment knob is shown in fig. 2. In the figure, if the magnification of the A sensor is adjusted, the magnification of the B sensor is changed. The two sensor magnification adjustments are not independent.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model aims to provide a binary channels independent measurement digital display formula inductance micrometer can use two sensors simultaneously, and two sensors are mutually totally independent, mutually noninterfere, and two independent measuring items can be accomplished to two sensors.
Based on this, the utility model provides a binary channels independent measurement digital display inductance micrometer, inductance micrometer includes:
the device comprises a first sensor, a second sensor, a sensing signal selector, a zero adjustment selector, a signal processor, an amplification factor selector, a first sensing signal amplification factor adjuster, a second sensing signal amplification factor adjuster, an amplification factor output device and a digital display meter;
the first sensor and the second sensor are respectively connected with the sensing signal selector and the zero adjustment selector, the sensing signal selector and the zero adjustment selector are both connected with the signal processor, the signal processor is connected with the amplification factor selector, the amplification factor selector is respectively connected with the first sensing signal amplification factor adjuster and the second sensing signal amplification factor adjuster, the first sensing signal amplification factor adjuster and the second sensing signal amplification factor adjuster are both connected with the amplification factor adjuster, the amplification factor adjuster is connected with the amplification factor output device, and the amplification factor output device is connected with the digital display meter.
The sensing signal selector is a measurement function selection switch, and the measurement function selection switch is provided with a left gear, a middle gear and a right gear.
When the measurement function selection switch is switched to a left gear, the sensing signal selector selects a sensing signal generated by the second sensor, the zero adjustment selector selects a second zero adjustment signal generated by the second sensor, the amplification factor adjuster selects the sensing signal input by the second sensor to perform amplification factor adjustment, and the amplification factor output device selects the sensing signal input by the second sensor to perform amplification output.
Wherein the first sensor is an axial or side-pointing inductive sensor.
The sensing signal selector adopts a two-position 4-knife gear switch.
Wherein the first sense signal amplification factor adjuster includes a sense signal amplifier.
The amplification factor output device comprises an AD converter and a singlechip which are connected in sequence.
Adopt the utility model discloses, two sensors can be used simultaneously to a binary channels independent measurement digital display inductance micrometer, and two sensors are mutually totally independent, mutually noninterfere, and an original digital display inductance micrometer can only measure a project, and two independent measurement projects can be accomplished to two present sensors, have brought obvious economic benefits for the customer.
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 present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a dual-channel independent measurement digital display type inductance micrometer according to an embodiment of the present invention;
fig. 2 is a schematic view of a sensor magnification adjustment knob according to the prior art provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of a dual-channel independent measurement digital display type inductance micrometer according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating the connection and disconnection of the terminals of the shift switch on the left side according to the embodiment of the present invention;
fig. 5 is a schematic diagram illustrating the connection and disconnection of the terminal when the shift switch is on the right side according to the embodiment of the present invention;
fig. 6 is a circuit diagram of a sense signal amplifier according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Fig. 3 is the embodiment of the utility model provides a binary channels independently measure digital display formula inductance micrometer's schematic diagram, inductance micrometer includes:
a first sensor 301, a second sensor 302, a sensing signal selector 303, a zero adjustment selector 304, a signal processor 305, an amplification factor selector 306, a first sensing signal amplification factor adjuster 307, a second sensing signal amplification factor adjuster 308, an amplification factor adjuster 309, an amplification factor outputter 310, and a digital display table 311;
the first sensor 301 and the second sensor 302 are respectively connected to the sensing signal selector 303 and the zero adjustment selector 304, the sensing signal selector 303 and the zero adjustment selector 304 are both connected to the signal processor 305, the signal processor 305 is connected to the amplification factor selector 306, the amplification factor selector 306 is respectively connected to the first sensing signal amplification factor adjuster 307 and the second sensing signal amplification factor adjuster 308, the first sensing signal amplification factor adjuster 307 and the second sensing signal amplification factor adjuster 308 are both connected to the amplification factor adjuster 309, the amplification factor adjuster 309 is connected to the amplification factor outputter 310, and the amplification factor outputter 310 is connected to the digital display table 311.
The first sensor 301 or the second sensor 302 is an axial or side-pointing inductive sensor.
The sensing signal selector 303 is a measurement function selector switch, which has three gears, i.e., a left gear, a middle gear and a right gear, wherein the sensing signal selector adopts a two-bit 4-pole gear switch, and the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12 are the terminal numbers of the gear switch. The state of the respective terminals when the inhibitor switch is shifted to the left is shown in fig. 4. The state of each terminal when the inhibitor switch is shifted to the right is shown in fig. 5.
When the measurement function selection switch is switched to a left gear, the sensing signal selector selects a second sensing signal generated by the second sensor, the zero adjustment selector selects a second zero adjustment signal generated by the second sensor, the amplification factor adjuster selects the sensing signal input by the second sensor to perform amplification factor adjustment, and the amplification factor output device selects the sensing signal input by the second sensor to perform amplification output.
When the measuring function selection switch is shifted to a right gear, the sensing signal selector selects a first sensing signal generated by the first sensor, the zero adjustment selector selects a first zero adjustment signal generated by the first sensor, the amplification factor adjuster selects the sensing signal input by the first sensor to perform amplification factor adjustment, and the amplification factor output device selects the sensing signal input by the first sensor to perform amplification output.
When the measuring function selection switch is shifted to a middle gear, the sensing signal selector does not select the sensing signal generated by any sensor.
The null adjust selector 304 is configured to receive a first null adjust signal from the first sensor and a second null adjust signal from the second sensor. The null is an adjustment selector that selects one of a null adjustment signal of the first sensor and a null adjustment signal of the second sensor to be input to the signal processor.
The signal processor 305 includes a single chip microcomputer, and is configured to perform signal processing on the received first sensing signal, the first null adjustment signal, or the second sensing signal, and the second null adjustment signal. The signal processing includes identifying whether the received sensing signal is the first sensing signal or the second sensing signal, zeroing, and the like.
The magnification selector 306 may be a magnification adjustment knob that may select a magnification value within a predetermined magnification range.
And after the amplification factor selector determines the amplification factor value, the first sensing signal or the second sensing signal is input to the first sensing signal amplification factor adjuster or the second sensing signal amplification factor adjuster.
The first sensing signal amplification factor adjuster 307 includes a sensing signal amplifier, and fig. 6 is a circuit diagram of the sensing signal amplifier provided by the embodiment of the present invention, the sensing signal amplifier may specifically include:
the signal acquisition device, the signal amplification circuit and the voltage stabilization output circuit are sequentially connected;
the power supply end of the signal sampler is connected with VCC1, namely +5V voltage, and the grounding end of the signal sampler is grounded.
The first resistor R1, the second resistor R2 and the first operational amplifier AR1 form a first-stage amplifying circuit, and the amplification factor is determined by the first resistor R1 and the second resistor R2. The second resistor R2 is a slide rheostat, and the amplification factor selector can control the amplification factor value by controlling the blockage of the second resistor R2.
An isolation circuit is arranged between the first-stage amplification circuit and the second-stage amplification circuit, and the isolation circuit comprises a second operational amplifier for isolating mutual influence between the front stage and the rear stage.
The two-stage amplifying circuit includes: the G pole of the first MOS tube U1 is respectively connected with the output end of the first operational amplifier and the seventh resistor R7, the S poles of the first MOS tube U1 are respectively connected with the emitter of a first triode T1 and the third resistor R3, the other end of the third resistor R3 is respectively connected with a first capacitor C1, a fourth resistor R4, a power supply VCC2 and the collector of a second triode T2, the other end of the fourth resistor R4 is respectively connected with the D pole of the first MOS tube U1, the second capacitor C2 and the third capacitor C3, the other end of the second capacitor C2 is connected to the base of the first transistor T1, the other end of the capacitor C3 is connected to the fifth resistor R5 and the sixth resistor R6 respectively, the other end of the fifth resistor R5 is respectively connected with the collector of the first triode T1 and the base of the second triode T2, and the emitter of the second triode T2 is respectively connected with the other end of the sixth resistor R6, the other end of the seventh resistor R7 and the output end of the amplifying circuit.
The common source amplifier is composed of the first MOS tube, the first MOS tube U1 has the characteristics of high input impedance and low thermal noise, the common source connection method has higher gain, the input is voltage variable, the output is current variable, when small signals in an amplification region work, the first MOS tube U1 can be regarded as a linear transconductance amplifier with the coefficient of G, the second stage is a common base amplifier composed of a PNP transistor T1, the second capacitor C2 is an alternating current bypass, the base is in short circuit with the ground, and becomes a common reference point, an emitter input and a collector output, the amplifier has the characteristics of good frequency characteristic, high voltage gain, no current gain, low input impedance and high output impedance which are just matched with the front and rear stages, the third stage is a common collector amplifier composed of an NPN transistor T2, the circuit uses the collector as the common reference point through a power supply loop, the base input and the emitter output, and is also called an emitter follower, the amplifier has the characteristics of good frequency characteristic, no gain of voltage, output following base voltage, high input impedance, low output impedance, strong driving capability and good matching of three-stage amplification devices, and forms an amplification path which has good frequency characteristic, low noise, higher voltage and current gains, light loading of input to a front stage and strong driving capability of output to a rear stage.
The voltage stabilization output circuit includes: triode steady voltage output circuit.
The amplification factor output unit 310 includes an AD converter and a single chip microcomputer connected in sequence. The first sensing signal or the second sensing signal is amplified by the sensing signal amplifier, the sensing signal of the analog signal is converted into a digital signal by the AD converter, the digital signal is processed by the singlechip and then displayed by the digital display meter, and the digital display meter is a digital display screen.
In addition, the single chip microcomputer can acquire a second sensing value after acquiring the first sensing value within a preset time, and perform processing such as summing and difference processing on the first sensing signal value and the second sensing signal value, wherein the summing and difference processing is an existing program and need not be described herein.
Adopt the utility model discloses, two sensors can be used simultaneously to a binary channels independent measurement digital display inductance micrometer, and two sensors are mutually totally independent, mutually noninterfere, and an original digital display inductance micrometer can only measure a project, and two independent measurement projects can be accomplished to two present sensors, have brought obvious economic benefits for the customer.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a two channel independent measurement digital display formula inductance micrometer which characterized in that includes:
the device comprises a first sensor, a second sensor, a sensing signal selector, a zero adjustment selector, a signal processor, an amplification factor selector, a first sensing signal amplification factor adjuster, a second sensing signal amplification factor adjuster, an amplification factor output device and a digital display meter;
the first sensor and the second sensor are respectively connected with the sensing signal selector and the zero adjustment selector, the sensing signal selector and the zero adjustment selector are both connected with the signal processor, the signal processor is connected with the amplification factor selector, the amplification factor selector is respectively connected with the first sensing signal amplification factor adjuster and the second sensing signal amplification factor adjuster, the first sensing signal amplification factor adjuster and the second sensing signal amplification factor adjuster are both connected with the amplification factor adjuster, the amplification factor adjuster is connected with the amplification factor output device, and the amplification factor output device is connected with the digital display meter.
2. The dual channel independent measurement digital display type micrometer induction meter according to claim 1, wherein the sensing signal selector is a measurement function selection switch having three positions of left, middle and right.
3. The dual-channel independent measurement digital display type inductance micrometer according to claim 2, wherein when the measurement function selection switch is shifted to a left position, the sensing signal selector selects the sensing signal generated by the second sensor, the null adjustment selector selects the second null adjustment signal generated by the second sensor, the amplification adjuster selects the sensing signal input by the second sensor for amplification adjustment, and the amplification output unit selects the sensing signal input by the second sensor for amplification output.
4. The dual channel independent measurement digital display micrometer according to claim 1, wherein the first sensor is an axial or a lateral inductance sensor.
5. The dual channel independent measurement digital display type electrical micrometer according to claim 1, wherein the sensing signal selector employs a two-position 4-pole position switch.
6. The dual channel independent measurement digital display type micrometer according to claim 1, wherein the first sense signal amplification adjustment comprises a sense signal amplifier.
7. The dual-channel independent measurement digital display type inductance micrometer according to claim 1, wherein the amplification factor outputter comprises an AD converter and a single chip microcomputer which are connected in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022001714.8U CN213238763U (en) | 2020-09-14 | 2020-09-14 | Double-channel independent measurement digital display type inductance micrometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022001714.8U CN213238763U (en) | 2020-09-14 | 2020-09-14 | Double-channel independent measurement digital display type inductance micrometer |
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| Publication Number | Publication Date |
|---|---|
| CN213238763U true CN213238763U (en) | 2021-05-18 |
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| CN202022001714.8U Expired - Fee Related CN213238763U (en) | 2020-09-14 | 2020-09-14 | Double-channel independent measurement digital display type inductance micrometer |
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Granted publication date: 20210518 |