CN210442403U

CN210442403U - Sensor assembling frame for experiment

Info

Publication number: CN210442403U
Application number: CN201920888721.9U
Authority: CN
Inventors: 高帆; 牟艳男; 王柏生
Original assignee: Heihe University
Current assignee: Heihe University
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-05-01
Anticipated expiration: 2029-06-13

Abstract

Sensor split mounting frame for experiments. The utility model relates to a sensor assembles frame for experiments. The sensor be and put board I (1-3) and supplementary be and put between board I (1-4) and be connected through a set of telescopic link I (2), supplementary be and put board I (1-4) and sensor be and put between board II (1-5) and be connected through a set of telescopic link II (3), the sensor be and put board II (1-5) and supplementary be and put between board II (1-6) and be connected through a set of telescopic link III (4), supplementary be put board II (1-6) and sensor be and put between board III (1-7) and be connected through a set of telescopic link IV (5). The utility model discloses the voltage when measurable quantity sensor uses compromises test bench length, and convenient to use is swift.

Description

Sensor assembling frame for experiment

Technical Field

The utility model relates to a sensor assembles frame for experiments.

Background

The sensors used in the existing laboratory are connected at random, and are independently connected with a voltmeter when voltage needs to be tested, so that the sensors cannot be used for measurement any more, and the sensors cannot be conveniently found on a laboratory table due to more connecting wires.

Disclosure of Invention

The utility model aims at providing a sensor assembling frame for experiments, the voltage when measurable quantity sensor uses compromises test bench length, and convenient to use is swift.

The above purpose is realized by the following technical scheme:

a universal wheel is arranged at the bottom end of a support 1-1, a telescopic frame 1-2 is arranged at the top end of the support 1-1, the telescopic frame 1-2 is divided into a sensor placing plate I1-3, an auxiliary placing plate I1-4, a sensor placing plate II 1-5, an auxiliary placing plate II 1-6 and a sensor placing plate III 1-7, the sensor placing plate I1-3 and the auxiliary placing plate I1-4 are connected through a set of telescopic rods I2, the auxiliary placing plate I1-4 and the sensor placing plate II 1-5 are connected through a set of telescopic rods II 3, the sensor placing plate II 1-5 and the auxiliary placing plate II 1-6 are connected through a set of telescopic rods III 4, and the auxiliary placing plate II 1-6 and the sensor placing plate III 1-7 are connected through a set of telescopic rods III 4 The shrinkage rods IV 5 are connected with each other,

the device is characterized in that a metal plug A and a metal plug B are arranged on one side of the sensor placing plate I1-3, the sensor placing plate II 1-5 and the sensor placing plate III 1-7, and the metal plug A and the metal plug B are inserted into a voltage testing box 6.

Further, telescopic link I2, telescopic link II 3, telescopic link III 4 are the same with telescopic link IV 5 structure, baffle 10 will assist to be the frame of putting board I1-4 and divide into cavity I and cavity II, cavity I in pack into telescopic link I2, telescopic link I2's top connect pivot I11, pivot I11 insert the sensor and be the cavity of putting board I1-3 and hang, cavity II in pack into telescopic link II 3, telescopic link II 3's top connect pivot II 12, pivot II 12 insert the sensor and be the cavity of putting board II 1-5 and hang.

Furthermore, wiring grooves I1-8, wiring grooves II 1-9 and wiring grooves III 1-10 are respectively arranged on the sensor presenting placing plate I1-3, the sensor presenting placing plate II 1-5 and the sensor presenting placing plate III 1-7, the centers of the sensor presenting placing plate I1-3, the sensor presenting placing plate II 1-5 and the sensor presenting placing plate III 1-7 are respectively provided with a circular through hole 7, each circular through hole 7 divides the wiring grooves I1-8, the wiring grooves II 1-9 and the wiring grooves III 1-10 into an upper part and a lower part, each part of the wiring grooves is provided with a clamp which comprises an L-shaped clamp plate I8 and an L-shaped clamp plate II 9, the L-shaped clamp plate I8 and the L-shaped clamp plate II 9 are oppositely arranged, the opposite end of the L-shaped clamp plate I8 is provided with a slide block I13, the sliding block I13 slides on the sliding groove I14, the sliding groove I14 is formed in a sensor placing plate, a sliding block II 15 is arranged at the opposite end of the L-shaped clamping plate II 9, the sliding block II 15 slides on a sliding groove II 16, the sliding groove II 16 is formed in the sensor placing plate, and a spring 17 is connected between the sliding block I13 and the sliding block II 15. The circular through hole 7 is provided to fit various shapes of sensors.

Has the advantages that:

1. the utility model discloses a can move on the laboratory bench, flexible, convenient to use is swift.

2. The utility model discloses a voltage detection circuit can adjust according to actual conditions, changes more ranges, uses wider scope.

3. The utility model discloses a can cooperate large-scale test bench to use, the position of outstanding sensor makes things convenient for the student to observe, understands.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the telescopic rod of the present invention.

Fig. 3 is a circuit diagram of the voltage measurement of the present invention.

The specific implementation mode is as follows:

the voltage value of the sensor can be directly measured by arranging a metal plug A and a metal plug B on one side of the sensor placing plate I1-3, the sensor placing plate II 1-5 and the sensor placing plate III 1-7, inserting the metal plug A and the metal plug B into a voltage testing box 6, connecting the other ends of the metal plug A and the metal plug B with an insertion point 20 through a wire, arranging the insertion point 20 on a wiring groove, and inserting the sensor into the insertion point 20 through the wire.

Further, telescopic link I2, telescopic link II 3, telescopic link III 4 and telescopic link IV 5 structure the same, baffle 10 will assist to be the frame of putting board I1-4 and divide into cavity I and cavity II, cavity I in pack into telescopic link I2, the top of telescopic link I2 connect pivot I11, pivot I11 insert the sensor and be in the cavity of putting board I1-3 and hang and can not drop from the wall body, but the turn is crooked, cavity II in pack into telescopic link II 3, the top of telescopic link II 3 connect pivot II 12, pivot II 12 insert the sensor and be in the cavity of putting board II 1-5 and hang and can not drop from the wall body, but the turn is crooked.

Furthermore, wiring grooves I1-8, wiring grooves II 1-9 and wiring grooves III 1-10 are respectively arranged on the sensor presenting placing plate I1-3, the sensor presenting placing plate II 1-5 and the sensor presenting placing plate III 1-7, the centers of the sensor presenting placing plate I1-3, the sensor presenting placing plate II 1-5 and the sensor presenting placing plate III 1-7 are respectively provided with a circular through hole 7, each circular through hole 7 divides the wiring grooves I1-8, the wiring grooves II 1-9 and the wiring grooves III 1-10 into an upper part and a lower part, each part of the wiring grooves is provided with a clamp which comprises an L-shaped clamp plate I8 and an L-shaped clamp plate II 9, the L-shaped clamp plate I8 and the L-shaped clamp plate II 9 are oppositely arranged, the opposite end of the L-shaped clamp plate I8 is provided with a slide block I13, the sliding block I13 slides on the sliding groove I14, the sliding groove I14 is formed in a sensor placing plate, a sliding block II 15 is arranged at the opposite end of the L-shaped clamping plate II 9, the sliding block II 15 slides on a sliding groove II 16, the sliding groove II 16 is formed in the sensor placing plate, and a spring 17 is connected between the sliding block I13 and the sliding block II 15.

The working principle is as follows:

the sensor is fixed on an L-shaped clamp plate I8 and an L-shaped clamp plate II 9, a metal plug of a wire carried by the sensor is inserted into an insertion point 20, a metal plug A and a metal plug B are inserted into a voltage test box 6, the wire needing to be connected with the sensor is inserted into a metal jack of the sensor with the wire (the wire is inserted in the experiment in a laboratory at present), the connection of a circuit is completed, the circuit is started, and the voltage value of the sensor is measured when the sensor works or does not work.

A voltage testing circuit is arranged in the voltage testing box 6, and is shown in figure 3;

fig. 3 shows another voltage measuring circuit formed by using an integrated operational amplifier CA3130, since CA3130 has a very high input impedance, which can reach 1012 Ω of T Ω, and at the same time, has a very high input impedance, which can effectively reduce the measurement error and improve the measurement accuracy.

The circuit comprises a direct current 15V single-voltage key, a test meter pen, a voltage divider, a measuring range selection switch K2, an RC filter, an integrated operational amplifier in-phase proportional amplifier, a meter head 100 and an A meter head. In the figure, only 4 ranges are shown, and the switch K2 is turned to 100m range in the gear 1, 1V range in the gear 2, and 100V range in the gear 3 and 10V range in the gear 4. The two reverse parallel diodes 2CP11 form an operational amplifier input protection circuit, which plays a role of overvoltage protection and prevents the operational amplifier from being damaged due to the fact that the voltage of the input person is accidentally overlarge. R1 in the circuit and capacitor C form a low-pass filter (capable of filtering out the ac component in the circuit). R23R3 determines the closed-loop amplification factor a =1+ (R3R2) =101 (i.e., 40dB) of the circuit in the in-phase proportional amplifier formed by R2 and R and the operational amplifier CA 3130. The RP is a zero-setting potentiometer of the operational amplifier, and the zero-setting method of the error circuit which can eliminate the offset voltage to the small signal is to close the switch K, short the red and black pen meters and adjust the RP to make the head indication value zero. When the measuring range is calibrated, K is set at any gear, and corresponding standard voltage is input. (no matter which range calibration is selected, the input voltage of the operational amplifier is 0ony and the output voltage is 101V when the full-range voltage is input) in an experiment, firstly, a 10V range is selected for calibration, K2 is set at the position of a gear 3, a standard voltage value of 10V (from a high-precision direct-current stabilized power supply) is input between red and black gauges, then, a potentiometer RP2 is adjusted to enable a gauge head to display the full-range value, at the moment, the voltage of a non-inverting input end (3 feet) of the operational amplifier is 100mV, the voltage of an output end (6 feet) is 10V.1004, the gauge head internal resistance is combined with a resistor R and a potentiometer RP2, the total resistance value is 10V100A =100K0, the voltage dividing resistor R +91K is arranged in the circuit, the potentiometer RP2 can be continuously adjusted within 20K, as long as the gauge head internal resistance does not exceed 10K2, the internal resistance of the. The same can calibrate several other ranges.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims

1. The utility model provides a sensor assembles frame for experiments, characterized by: the bottom end of the support (1-1) is provided with universal wheels, the top end of the support (1-1) is provided with a telescopic frame (1-2), the telescopic frame (1-2) is divided into a sensor placing plate I (1-3), an auxiliary placing plate I (1-4), a sensor placing plate II (1-5), an auxiliary placing plate II (1-6) and a sensor placing plate III (1-7), the sensor placing plate I (1-3) and the auxiliary placing plate I (1-4) are connected through a group of telescopic rods I (2), the auxiliary placing plate I (1-4) and the sensor placing plate II (1-5) are connected through a group of telescopic rods II (3), the sensor placing plate II (1-5) and the auxiliary placing plate II (1-6) are connected through a group of telescopic rods (4), the auxiliary presenting placing plates II (1-6) are connected with the sensor presenting placing plates III (1-7) through a group of telescopic rods IV (5),

the sensor is that to put board I (1-3), the sensor is that to put board II (1-5) and the sensor is that to put one side of board III (1-7) and set up metal plug A and metal plug B, metal plug A and metal plug B insert in voltage test case (6).

2. The experimental sensor split frame according to claim 1, wherein: telescopic link I (2), telescopic link II (3), telescopic link III (4) and telescopic link IV (5) structure the same, baffle (10) will assist to be the frame of putting board I (1-4) and divide into cavity I and cavity II, cavity I in pack into telescopic link I (2), the top of telescopic link I (2) connect pivot I (11), pivot I (11) insert the sensor and be the cavity of putting board I (1-3) and hang, cavity II in pack into telescopic link II (3), the top of telescopic link II (3) connect pivot II (12), pivot II (12) insert the sensor and be the cavity of putting board II (1-5) and hang.

3. The experimental sensor split frame according to claim 1, wherein: the sensor is characterized in that wiring grooves I (1-8), wiring grooves II (1-9) and wiring grooves III (1-10) are respectively arranged on a sensor presenting placing plate I (1-3), a sensor presenting placing plate II (1-5) and a sensor presenting placing plate III (1-7), the centers of the sensor presenting placing plate I (1-3), the sensor presenting placing plate II (1-5) and the sensor presenting placing plate III (1-7) are respectively provided with a circular through hole (7), each circular through hole (7) divides the wiring grooves I (1-8), the wiring grooves II (1-9) and the wiring grooves III (1-10) into an upper part and a lower part, each wiring groove is provided with a clamp, each clamp comprises an L-shaped clamp plate I (8) and an L-shaped clamp plate II (9), the L-shaped clamp plate I (8) and the L-shaped clamp plate II (9) are oppositely arranged, the sensor positioning device is characterized in that a sliding block I (13) is arranged at the opposite end of the L-shaped clamping plate I (8), the sliding block I (13) slides on a sliding groove I (14), the sliding groove I (14) is formed in the sensor positioning plate, a sliding block II (15) is arranged at the opposite end of the L-shaped clamping plate II (9), the sliding block II (15) slides on a sliding groove II (16), the sliding groove II (16) is formed in the sensor positioning plate, and a spring (17) is connected between the sliding block I (13) and the sliding block II (15).