CN217276414U

CN217276414U - Oil mass sensor

Info

Publication number: CN217276414U
Application number: CN202123203875.6U
Authority: CN
Inventors: 化瑞峰; 陈勇浩; 陆文权
Original assignee: Guangzhou Haojin Motorcycle Group Co ltd
Current assignee: Guangzhou Haojin Motorcycle Group Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-08-23
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses an oil mass sensor, including gauge rod, float and circuit unit, the float install in on the gauge rod, and can follow the length direction of gauge rod slides, be provided with the magnet in the float, be provided with the waveguide silk of being made by the magnetostrictive material in the gauge rod, just the waveguide silk is followed the length direction of gauge rod extends, circuit unit with the waveguide silk is connected, circuit unit has emitter end and acceptance end, the emitter end is suitable for sending inquiry pulse current signal, and the liquid level of fluid in this oil mass sensor can the precision measurement motorcycle oilcan, and the reliability is high.

Description

Oil mass sensor

Technical Field

The utility model relates to a motorcycle technical field especially relates to an oil mass sensor.

Background

The existing liquid level monitoring technology has the modes of ultrasonic wave, liquid pressure, gas pressure measurement and the like. The ultrasonic liquid level sensor has large volume, has requirements on the precision of measuring distance, and is difficult to measure the distance within 20cm, so the ultrasonic liquid level sensor is suitable for a deeper container; the liquid pressure liquid level sensor can hardly measure the liquid level change in an oil tank with the depth of 18cm, and the cost is high; the gas pressure liquid level sensor has large measurement error and high cost due to the fact that the air compression rate changes along with the ambient temperature.

For the liquid level monitoring in the motorcycle oilcan, the above measuring mode is not applicable, and the liquid level monitoring in the motorcycle oilcan mainly adopts a magnetic reed pipe and a switch type Hall element at present. Because the magnetic reed tube and the switch type Hall element are separately arranged elements, only single-point or multi-point liquid level detection can be carried out, continuous monitoring of the liquid level can not be carried out, and the output signal is generally a voltage or current signal, so that the functional safety level is not high.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an oil mass sensor, the liquid level height of fluid in the motorcycle oilcan can be accurately measured, and the reliability is high.

The purpose of the utility model is realized by adopting the following technical scheme:

the utility model provides an oil mass sensor, includes gauge rod, float and circuit unit, the float install in on the gauge rod, and can follow the length direction of gauge rod slides, be provided with the magnet in the float, be provided with the waveguide silk of being made by magnetostrictive material in the gauge rod, just the waveguide silk is followed the length direction of gauge rod extends, circuit unit with the waveguide silk is connected, circuit unit has transmitting terminal and receiving terminal, the transmitting terminal is suitable for sending interrogation pulse current signal, the receiving terminal is suitable for receiving the torsional wave pulse that produces after interrogation pulse current signal met with the magnet, install the strain pulse detector on the circuit unit, the strain pulse detector is suitable for detecting the torsional wave pulse of accepting.

Further, the magnet is a permanent magnet.

Further, the detection rod includes sliding part, connecting portion and installation department, the sliding part pass through connecting portion with the installation department is connected, the float slidable install in on the sliding part, just the sliding part is kept away from the one end of connecting portion installs the stopper, circuit unit install in the installation department is kept away from the one end of connecting portion.

Further, this application still includes the fixing base, the circuit unit passes through the fixing base with the installation department is connected, set up the fixed orifices that supplies the bolt to pass on the fixing base.

Furthermore, the detection rod and the floater are coaxially arranged, and the magnets are distributed in a circumferential array by taking the axis of the floater as the center of a circle.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the float is internally provided with the magnet, the circuit element is matched with the strain pulse detector, an interrogation pulse current signal sent by the circuit element meets the magnetic field of the magnet to generate a torsional wave pulse at the position of the float, the torsional wave pulse is transmitted back to the circuit unit along the waveguide wire at a fixed speed and is detected by the strain pulse detector, the position of the float, namely the position of the liquid level, can be accurately determined by measuring the time difference between the pulse current and the torsional wave, so that the height of oil in the oil can be measured in real time, and the accuracy is high; and because the waveguide wire is embedded in the detection rod and cannot be contacted with oil in the oil can, the reliability is high.

Drawings

Fig. 1 is a schematic structural diagram of an oil quantity sensor according to the present application;

FIG. 2 is a schematic view of another angle of the oil sensor according to the present application;

the figure is as follows: 1. a probe rod; 101. a sliding part; 102. a connecting portion; 103. an installation part; 104. a limiting block; 2. a float; 3. a circuit unit; 4. a fixed seat.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1 and 2, the present application discloses an oil sensor, which includes a probe rod 1, a float 2 and a circuit unit 3, wherein the float 2 is mounted on the probe rod 1 and can slide along a length direction of the probe rod 1, a magnet is disposed in the float 2, a waveguide wire made of magnetostrictive material is disposed in the probe rod 1, the waveguide wire extends along the length direction of the probe rod 1, the circuit unit 3 is connected with the waveguide wire, the circuit unit 3 has a transmitting end and a receiving end, the transmitting end is adapted to transmit an interrogation pulse current signal, the receiving end is adapted to receive a torsional wave pulse generated after the interrogation pulse current signal meets the magnet, a strain pulse detector is mounted on the circuit unit 3, and the strain pulse detector is adapted to detect the received torsional wave pulse.

When the device works, an interrogation pulse current signal is sent by the transmitting end to meet a magnetic field generated by a magnet arranged in the floater 2, so that the magnetic field around the floater 2 is changed, a torsional wave pulse is generated at the position of the floater 2 by a waveguide wire made of magnetostrictive materials in the detection rod 1, and the pulse is transmitted back to the receiving end along the waveguide wire at a fixed speed and is detected by the strain pulse detector. The position of the float 2, i.e. the position of the liquid level, can be accurately determined by measuring the time difference between the interrogation pulse current signal and the torsional wave.

Preferably, the magnet in this application is a permanent magnet, so that there is no need to additionally provide power to the magnet in the float 2 in order to cause it to generate a magnetic force.

Preferably, the detection rod 1 includes a sliding portion 101, a connecting portion 102 and a mounting portion 103, the sliding portion 101 is connected to the mounting portion 103 through the connecting portion 102, the float 2 is slidably mounted on the sliding portion 101, a stopper 104 is mounted at an end of the sliding portion 101 away from the connecting portion 102 to prevent the float from being detached from the detection rod 1, and the circuit unit 3 is mounted at an end of the mounting portion 103 away from the connecting portion 102.

In addition, for making circuit unit 3 can install on the motorcycle, this application still includes fixing base 4, and circuit unit 3 passes through fixing base 4 and is connected with installation department 103, sets up the fixed orifices that supplies the bolt to pass on fixing base 4, and when the installation, only need utilize the bolt to pass the fixed orifices to fix fixing base 4 on the motorcycle.

Simultaneously, for improving measurement accuracy, feeler lever 1 and the coaxial setting of float 2 in this application, the magnet uses 2 axles of float as the centre of a circle to be the circumference array distribution to the magnetic field that makes the magnet produce can evenly surround feeler lever 1.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. An oil mass sensor characterized in that: comprises a detection rod (1), a floater (2) and a circuit unit (3), wherein the floater (2) is arranged on the detection rod (1), and can slide along the length direction of the detection rod (1), a magnet is arranged in the floater (2), a waveguide wire made of magnetostrictive material is arranged in the detection rod (1), the waveguide wire extends along the length direction of the detection rod (1), the circuit unit (3) is connected with the waveguide wire, the circuit unit (3) has a transmitting end and a receiving end, the transmitting end is suitable for sending out an interrogation pulse current signal, the receiver is adapted to receive a torsional wave pulse generated after the interrogation pulse current signal encounters the magnet, and a strain pulse detector is mounted on the circuit unit (3) and is suitable for detecting the received torsional wave pulse.

2. The fuel quantity sensor according to claim 1, wherein: the magnet is a permanent magnet.

3. The fuel quantity sensor according to claim 1, wherein: the detection rod (1) comprises a sliding portion (101), a connecting portion (102) and an installation portion (103), the sliding portion (101) is connected with the installation portion (103) through the connecting portion (102), the floater (2) is slidably installed on the sliding portion (101), a limiting block (104) is installed at one end, away from the connecting portion (102), of the sliding portion (101), and a circuit unit (3) is installed at one end, away from the connecting portion (102), of the installation portion (103).

4. A fuel quantity sensor according to claim 3, wherein: still include fixing base (4), circuit unit (3) pass through fixing base (4) with installation department (103) are connected, set up the fixed orifices that supplies the bolt to pass on fixing base (4).

5. The fuel quantity sensor according to claim 1, wherein: the detection rod (1) and the floater (2) are coaxially arranged, and the magnets are distributed in a circumferential array mode by taking the axis of the floater (2) as the circle center.