CN214097054U - Viscosity sensor device - Google Patents
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- CN214097054U CN214097054U CN202023086767.0U CN202023086767U CN214097054U CN 214097054 U CN214097054 U CN 214097054U CN 202023086767 U CN202023086767 U CN 202023086767U CN 214097054 U CN214097054 U CN 214097054U
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Abstract
The embodiment of the application provides a viscosity sensor device, and relates to the technical field of oil monitoring. The viscosity sensor device comprises a vibration executing mechanism and a vibration detecting mechanism; the vibration executing mechanism comprises a vibration conversion element, a circular flat diaphragm and a vibrator, wherein the vibration conversion element is arranged on a first surface of the circular flat diaphragm, the vibrator is arranged on a second surface of the circular flat diaphragm, and the vibrator vibrates along the normal line or the tangential line direction of the circular flat diaphragm; the vibration detection mechanism comprises a vibration detection circuit, and the vibration detection circuit is connected with the vibration conversion element. The viscosity sensor device can achieve the technical effect of improving the measuring range of the sensor.
Description
Technical Field
The application relates to the technical field of oil monitoring, in particular to a viscosity sensor device.
Background
At present, a viscosity sensor generally comprises a baffle, a transmission rod, an elastic beam, a positioning pipe, a protective sleeve and a force sensitive element, wherein the viscosity sensor is used for detecting the viscosity change of a fluid medium by using a signal output by the force sensitive element, is suitable for detecting the viscosity change of the medium on line in a reaction kettle with stirring, and can be used for Newtonian fluid media and non-Newtonian fluid media such as high molecular polymers. In the prior art, the viscosity sensor has narrow measuring range and poor practicability.
SUMMERY OF THE UTILITY MODEL
An object of the embodiments of the present application is to provide a viscosity sensor device and a viscosity measurement method, which can achieve the technical effect of increasing the measurement range of the sensor.
In a first aspect, an embodiment of the present application provides a viscosity sensor device, including a vibration actuator and a vibration detection mechanism;
the vibration executing mechanism comprises a vibration conversion element, a circular flat diaphragm and a vibrator, wherein the vibration conversion element is arranged on a first surface of the circular flat diaphragm, the vibrator is arranged on a second surface of the circular flat diaphragm, and the vibrator vibrates along the normal line or the tangential line direction of the circular flat diaphragm;
the vibration detection mechanism comprises a vibration detection circuit, and the vibration detection circuit is connected with the vibration conversion element.
In the implementation process, the viscosity sensor device comprises a resonance unit working in a liquid environment, wherein the resonance unit comprises a vibration execution mechanism and a vibration detection mechanism, and can measure the oil liquid based on a double-vibration mode, so that the vibrator vibrates along the normal line or the tangential direction of the circular flat diaphragm, the vibrator cuts surrounding liquid when vibrating along the normal line of the circular flat diaphragm, and the vibrator moves a certain volume of liquid when vibrating along the tangential line of the circular flat diaphragm; therefore, the viscosity sensor device measures the viscosity of oil by utilizing different resonance modes of the oscillator, and switches between the two vibration modes by adopting a return difference control mode, so that the measurement of a wide range can be effectively achieved, and the technical effect of improving the range of the sensor is realized.
Further, the apparatus further includes a first housing, and the vibration conversion element is mounted inside the first housing.
In the implementation process, the vibration conversion element is arranged in the first shell, and is isolated from the external liquid environment through the first shell and the circular flat diaphragm, so that the vibration conversion element is prevented from being corroded by liquid, and the stability and the reliability of the vibration conversion element are ensured.
Further, the device further comprises connectors, and the connectors are respectively connected with the vibration detection circuit and the vibration conversion element.
In the implementation process, the vibration conversion element is in signal transmission with the outside through the connector.
Further, the apparatus further includes a second housing installed on one side outer surface of the first housing, and the connector is installed in the second housing.
In the implementation process, the second shell is connected with the first shell in an airtight mode, so that the connector and the vibration conversion element are isolated from the external liquid environment, and the connector and the vibration conversion element are prevented from being corroded by liquid.
Further, the device still includes the safety cover, the safety cover set up in on the opposite side surface of first shell, the oscillator is installed in the safety cover.
In the above implementation process, the protective cover is used for protecting the vibrator.
Further, the vibrator is perpendicular to the surface of the circular flat diaphragm, and when the vibration conversion element works in a first resonance mode, the circular flat diaphragm is driven to vibrate along the tangential direction of the circular flat diaphragm.
In the implementation process, the viscosity sensor vibrates along the tangential direction of the circular flat membrane in the first vibration mode, and the viscosity sensor moves liquid with a certain volume at the moment.
Further, when the vibration conversion element works in the second resonance mode, the circular flat diaphragm is driven to vibrate along the normal direction of the circular flat diaphragm.
In the implementation process, the viscosity sensor vibrates along the normal direction of the circular flat membrane in the second vibration mode, and the viscosity sensor is used for shearing liquid with a certain volume.
Further, the vibration detection circuit includes a first signal transmission line and a second signal transmission line, and the first signal transmission line and the second signal transmission line are respectively connected to the vibration conversion element.
In the implementation process, the first vibration mode and the second vibration mode work in a time-sharing mode, and when the first vibration mode and the second vibration mode work in one vibration mode, the two signal transmission lines of the first signal transmission line and the second signal transmission line transmit signals together; when the vibration conversion element is in different vibration modes, signals are transmitted through the two signal transmission lines, and the two vibration modes work in a time-sharing mode, so that the mutual interference of the signals in the different vibration modes can be avoided, and the measurement accuracy is improved.
In a second aspect, the present application provides a viscosity measurement method applied to the viscosity sensor apparatus of any one of the first aspects, the method including:
driving the circular flat membrane to vibrate along the tangential direction of the circular flat membrane to obtain a first viscosity measurement value;
judging whether the first viscosity measured value is greater than the first viscosity preset value;
if so, marking the first viscosity measurement value as true, and ending the measurement or carrying out the next measurement;
and if not, driving the circular flat diaphragm to vibrate along the normal direction of the circular flat diaphragm to obtain a second viscosity measurement value.
In the implementation process, the first resonance mode is utilized, namely the circular flat diaphragm is driven to vibrate along the tangential direction of the circular flat diaphragm, so that the high-viscosity oil liquid is measured, and the viscosity measurement result is more accurate.
In a third aspect, an embodiment of the present application provides a viscosity measurement method applied to the viscosity sensor apparatus of any one of the first aspect, the method including:
driving the circular flat membrane to vibrate along the normal direction of the circular flat membrane to obtain a second viscosity measurement value;
judging whether the second viscosity measured value is smaller than the second viscosity preset value;
if so, marking the second viscosity measurement value as true, and ending the measurement or carrying out the next measurement;
if not, driving the circular flat diaphragm to vibrate along the tangential direction of the circular flat diaphragm, and obtaining a third viscosity measured value.
In the implementation process, the second resonance mode is utilized, namely the circular flat diaphragm is driven to vibrate along the normal direction of the circular flat diaphragm, so that the low-viscosity oil liquid can be measured, and the viscosity measurement result is more accurate.
Additional features and advantages of the disclosure will be set forth in the description which follows, or in part may be learned by the practice of the above-described techniques of the disclosure, or may be learned by practice of the disclosure.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a viscosity sensor device according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of another viscosity sensor apparatus provided in an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of vibration of a viscosity sensor in a first vibration mode according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of the vibration of the viscosity sensor in a second vibration mode provided by an embodiment of the present application;
FIG. 5 is a schematic flow chart of a viscosity measurement method according to an embodiment of the present disclosure;
fig. 6 is a schematic flow chart of another viscosity measurement method according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or a point connection; either directly or indirectly through intervening media, or may be an internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
The embodiment of the application provides a viscosity sensor device and a viscosity measuring method, which can be applied to the viscosity test of oil liquid and realize the technical effect of wide range; the viscosity sensor device comprises a resonance unit working in a liquid environment, wherein the resonance unit comprises a vibration executing mechanism and a vibration detecting mechanism, and can measure oil liquid based on a double-vibration mode, so that a vibrator vibrates along the normal line or the tangential direction of a circular flat diaphragm, the vibrator cuts surrounding liquid when vibrating along the normal line of the circular flat diaphragm, and the vibrator moves a certain volume of liquid when vibrating along the tangential line of the circular flat diaphragm; therefore, the viscosity sensor device measures the viscosity of oil by utilizing different resonance modes of the oscillator, and switches between the two vibration modes by adopting a return difference control mode, so that the measurement of a wide range can be effectively achieved, and the technical effect of improving the range of the sensor is realized.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a viscosity sensor device according to an embodiment of the present disclosure, where the viscosity sensor device includes a vibration actuator 100 and a vibration detector.
Illustratively, the vibration actuator 100 includes a vibration conversion element 110, a circular flat diaphragm 120, and a vibrator 130, the vibration conversion element 110 is disposed on a first surface of the circular flat diaphragm 120, the vibrator 130 is disposed on a second surface of the circular flat diaphragm 120, and the vibrator 130 vibrates along a normal line or a tangential line of the circular flat diaphragm 120.
Illustratively, the vibration detection mechanism includes a vibration detection circuit connected to the vibration conversion element 110.
Illustratively, the viscosity sensor device includes a resonance unit including a vibration actuator 100 and a vibration detection mechanism; the vibration actuator comprises a vibration conversion element 110 for applying vibration, a round flat diaphragm 120 for isolating the vibration conversion element 110 from a liquid environment, and a vibrator 130 connected with the round flat diaphragm 120; the vibration is applied to the vibrator 130 through the circular flat diaphragm 120 by the vibration conversion element 110, so that the vibrator 130 senses a change in the liquid environment as vibration, and a measurement signal of the vibrator is detected by the vibration detection mechanism. The vibration detection mechanism comprises a vibration detection circuit, and the vibration detection circuit processes the measurement signal so as to obtain the viscosity information of the liquid.
For example, the vibration conversion element 110 may receive an excitation signal to vibrate itself; when the vibration conversion element 110 has no input of the excitation signal, the vibration conversion element 110 may convert the vibration signal of the vibrator 130 into an electrical signal, and transmit the electrical signal to the vibration detection circuit; therefore, the vibration detection circuit can process the measurement signal, and the viscosity information of the liquid can be obtained.
In some embodiments, the viscosity sensor device includes a resonance unit operating in a liquid environment, the resonance unit includes a vibration actuator 100 and a vibration detection mechanism, and the oil can be measured based on a dual vibration mode, such that the vibrator 130 vibrates along a normal line or a tangential line of the circular flat diaphragm 120, the vibrator 130 shears surrounding liquid when vibrating along the normal line of the circular flat diaphragm 120, and the vibrator 130 moves a certain volume of liquid when vibrating along the tangential line of the circular flat diaphragm 120; therefore, the viscosity sensor device measures the viscosity of oil by using different resonance modes of the vibrator 130, and switches between the two vibration modes by adopting a return difference control mode, so that the measurement of a wide range can be effectively achieved, and the technical effect of improving the range of the sensor is realized.
In some embodiments, the vibration detection circuit includes a first signal transmission line 210 and a second signal transmission line 220, the first signal transmission line 210 and the second signal transmission line 220 being connected to the vibration conversion element 110, respectively.
Illustratively, the two vibration modes of the first vibration mode and the second vibration mode operate in a time-sharing manner, and when operating in one of the vibration modes, the two signal transmission lines of the first signal transmission line 210 and the second signal transmission line 220 transmit signals together; when the vibration conversion element 110 is in different vibration modes, signals are transmitted through the two signal transmission lines, and the two vibration modes work in a time-sharing mode, so that mutual interference of the signals in the different vibration modes can be avoided, and the measurement accuracy is improved.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another viscosity sensor device according to an embodiment of the present disclosure.
Illustratively, the viscosity sensor device further includes a first housing 140, and the vibration conversion element 110 is mounted inside the first housing 140.
Illustratively, the vibration conversion element 110 is mounted inside the first housing 140, and the first housing 140 and the circular flat diaphragm 120 jointly isolate the vibration conversion element 110 from the external liquid environment, so as to ensure that the vibration conversion element 110 is not corroded by the liquid, thereby ensuring the stability and reliability of the vibration conversion element 110.
Illustratively, the viscosity sensor device further includes connectors 150, and the connectors 150 are respectively connected to the vibration detection circuit and the vibration conversion element 110.
Illustratively, the vibration conversion element 110 performs signal transmission with the outside through the connector 150.
Illustratively, the viscosity sensor apparatus further includes a second housing 160, the second housing 160 being mounted on one side outer surface of the first housing 140, and the connector 150 being mounted in the second housing 160.
Illustratively, the second housing 160 is hermetically connected to the first housing 140, so as to ensure that the connector 150 and the vibration conversion element 110 are isolated from the external liquid environment and that the connector 150 and the vibration conversion element 110 are not corroded by the liquid.
Illustratively, the viscosity sensor device further includes a protective cover 170, the protective cover 170 being disposed on the other side outer surface of the first housing 140, and the vibrator 130 being mounted in the protective cover 170.
Illustratively, the protective cover 170 is used to protect the vibrator 130.
Referring to fig. 3, fig. 3 is a schematic vibration diagram of a viscosity sensor in a first vibration mode according to an embodiment of the present disclosure.
Illustratively, the vibrator 130 is perpendicular to the surface of the circular flat diaphragm 120, and when the vibration conversion element 110 operates in the first resonance mode, the circular flat diaphragm 120 is driven to vibrate in a tangential direction of the circular flat diaphragm 120.
Illustratively, in the first vibration mode, the viscosity sensor vibrates along the tangential direction of the circular flat membrane 120, and the viscosity sensor moves a certain volume of liquid; as shown in fig. 3, the viscosity sensor vibrates in the X-axis direction in the first vibration mode.
Referring to fig. 4, fig. 4 is a schematic vibration diagram of the viscosity sensor in the second vibration mode according to the embodiment of the present disclosure.
Illustratively, when the vibration conversion element 110 operates in the second resonance mode, the circular flat diaphragm 120 is driven to vibrate in a normal direction of the circular flat diaphragm 120.
Illustratively, in the second vibration mode, the viscosity sensor vibrates along the normal direction of the circular flat membrane 120, and the viscosity sensor is a liquid for shearing a certain volume; as shown in fig. 4, the viscosity sensor vibrates in the direction of the Z-axis in the second vibration mode.
Referring to fig. 5, fig. 5 is a schematic flow chart of a viscosity measurement method according to an embodiment of the present disclosure, the method includes the following steps:
s110: and driving the circular flat diaphragm to vibrate along the tangential direction of the circular flat diaphragm to obtain a first viscosity measured value.
S120: and judging whether the first viscosity measured value is larger than a first viscosity preset value.
S130: if so, the first viscosity measurement is flagged as true and the measurement is terminated or the next measurement is taken.
S140: if not, the circular flat diaphragm is driven to vibrate along the normal direction of the circular flat diaphragm, and a second viscosity measurement value is obtained.
Illustratively, the first resonance mode, namely, the circular flat diaphragm is driven to vibrate along the tangential direction of the circular flat diaphragm, is used for measuring oil with high viscosity, so that the viscosity measurement result is more accurate.
Referring to fig. 6, fig. 6 is a schematic flow chart of another viscosity measurement method according to an embodiment of the present disclosure, the method includes the following steps:
s210: and driving the circular flat diaphragm to vibrate along the normal direction of the circular flat diaphragm to obtain a second viscosity measurement value.
S220: and judging whether the second viscosity measured value is smaller than a second viscosity preset value.
S230: if so, the second viscosity measurement is flagged as true and the measurement is terminated or the next measurement is taken.
S240: if not, the circular flat diaphragm is driven to vibrate along the tangential direction of the circular flat diaphragm, and a third viscosity measured value is obtained.
Illustratively, the second resonance mode, namely driving the circular flat diaphragm to vibrate along the normal direction of the circular flat diaphragm, is used for measuring oil with low viscosity, so that the viscosity measurement result is more accurate.
In some embodiments, a viscosity sensor apparatus provided in the examples herein, comprises the following steps:
the method comprises the following steps: placing the viscosity sensor device in a liquid environment to be measured, wherein the liquid level completely submerges a vibration executing mechanism of the viscosity sensor;
step two: the viscosity of the liquid to be measured is measured, the viscosity changes obviously along with the temperature, if the temperature changes in the measuring process, the viscosity inevitably changes, the viscosity is reduced along with the temperature rise, and when the viscosity is reduced from a high viscosity range to a low viscosity range, the viscosity sensor is switched from a first vibration mode to a second vibration mode, so that the measurement is more accurate; otherwise, switching from the second vibration mode to the first vibration mode;
for example, when viscosity measurement is performed, a first resonance mode may be used for measurement, a first viscosity measurement value obtained by measurement is compared with a first viscosity preset value, if the first viscosity measurement value is greater than the first viscosity preset value, the measurement is still performed by using the first resonance mode, and if the first viscosity measurement value is less than or equal to the first viscosity preset value, the measurement is performed by using a second resonance mode; if the second viscosity measured value is smaller than the second viscosity preset value during the measurement in the second resonance mode, the measurement is still carried out in the second resonance mode, and if the second viscosity measured value is larger than or equal to the second viscosity preset value, the measurement is carried out in the first resonance mode; the first viscosity preset value and the second viscosity preset value are different, so that frequent switching of the vibration mode can be prevented when the liquid viscosity fluctuates up and down at the first viscosity preset value.
Optionally, the first viscosity preset value is 120cSt, and the second viscosity preset value is 150 cSt;
step three: after the measurement is finished, after the vibration mode is selected in step two, the measurement flag may be set to "0" to finish the measurement of the viscosity sensor.
Illustratively, the viscosity sensor divides a first resonance mode and a second resonance mode in the liquid environment, the vibrator 130 works in a resonance state under the signal action of the viscosity sensor, is influenced by a damping effect when freely vibrating in the liquid environment, and can calculate the viscosity information of the measured liquid through the detection of the vibration signal and a vibration model established by a vibration detection mechanism.
Illustratively, the excitation signal of the viscosity sensor brings the vibration into a first vibration mode, and measures the amplitude reduction rate of the current damping vibration mode, wherein the amplitude reduction rate is the ratio of two adjacent amplitudes in the same direction and is marked as alpha, and the natural logarithm of the amplitude reduction rate is called a logarithmic reduction coefficient and is expressed by delta; in the first vibration mode, the viscosity calculation formula is as follows:
wherein mu is the hydrodynamic viscosity, k is the equivalent stiffness of the vibrator, m is the effective mass of the vibrator, l is the length of the vibrator,
pi is the circumference ratio, A is the area of the vibrator, ρlIs the liquid density, ρ is the bulk mass density of the transducer, F is the cross-sectional area of the transducer, E is the modulus of elasticity of the transducer, I0The section moment of inertia of the vibrator, δ is a logarithmic amplitude reduction coefficient, δ ═ ln α, and α is an amplitude reduction rate. From the formula, the viscosity of the liquid increases with the increase of the logarithmic coefficient of reduction.
When the viscosity of the liquid to be measured is reduced to a low viscosity range, starting an excitation signal of the viscosity sensor, enabling the vibration of the viscosity sensor to enter a second vibration mode, and measuring the amplitude reduction rate of the current damping vibration mode of the viscosity sensor, wherein the amplitude reduction rate is in the same direction, the ratio of two adjacent amplitudes is expressed by alpha, and the natural logarithm of the amplitude reduction rate is called a logarithmic reduction coefficient and is expressed by delta. Wherein the radius of the round flat membrane is R (m), the thickness is H (m), the elastic modulus of the material is E (Pa), and the Poisson ratio of the material is mu; in the second vibration mode, the viscosity calculation formula is as follows:
wherein eta hydrodynamic forcesViscosity, keIs the equivalent stiffness of a circular flat diaphragm,
meis the equivalent mass of a circular flat diaphragm, AeIs the equivalent area of the circular flat diaphragm,
ρlis the liquid density, pi is the circumferential ratio, δ is the logarithmic decrement factor, δ ═ ln α, α is the amplitude decrement ratio. From the formula, the viscosity of the liquid increases with the increase of the logarithmic coefficient of reduction.
In some implementations, the flow of steps for using the viscosity sensor is as follows:
1) the programmable high-low temperature test box is used for controlling the change and constancy of the temperature, and the multichannel signal collector is used for transmitting the measurement information of the viscosity sensor to the upper computer;
2) placing 220cSt gear oil in a beaker, wherein the dosage of the gear oil is preferably just submerging a probe of the viscosity sensor;
3) the viscosity of the measurement oil was determined to be 211.9cSt at 40 ℃ and 18.34cSt at 100 ℃ according to the Walther equation: lglg(v+0.7)＝A-Blg(T +273.15) calculating a value of a to 8.88385586 and a value of B to 3.41258374 (wherein v is kinematic viscosity; T is temperature; constants a and B are determined by measuring viscosity values corresponding to 40 ℃ and 100 ℃);
4) selecting 3 viscosity points for measurement, wherein the viscosity values are 120cSt, 150cSt and 600cSt, the viscosity value 120cSt is a first preset viscosity value, the viscosity value 150cSt is a second preset viscosity value, and the temperatures corresponding to the viscosity points of 120cSt, 150cSt and 600cSt are respectively 50.4 ℃, 46.1 ℃ and 24.2 ℃ through calculation of a Walther equation;
5) keeping the temperature of the programmable high-low temperature test chamber at 24.2 ℃ for 1 hour, gradually increasing the temperature to 46.1 ℃ and keeping the temperature constant for 1 hour, then gradually increasing the temperature to 50.4 ℃ and keeping the temperature constant for 1 hour, firstly measuring by the viscosity sensor in a first resonance mode, wherein the measured viscosity value is more than 120cSt, and then still measuring in the first resonance mode; when the temperature is raised to 46.1 ℃, the measured viscosity value is more than 120cSt, and the viscosity sensor still performs measurement in the first resonance mode; and when the temperature is increased to 50.4 ℃, the measured viscosity value is less than or equal to 120cSt, and the viscosity sensor performs measurement in a second resonance mode.
6) Keeping the temperature of the programmable high-low temperature test chamber at 50.4 ℃ for 1 hour, gradually cooling to 46.1 ℃ for 1 hour, then gradually cooling to 24.2 ℃ for 1 hour, and measuring by the viscosity sensor in a second resonance mode when the viscosity value is less than 150cSt at 50.4 ℃; when the temperature is reduced to 46.1 ℃, the viscosity value measured by the viscosity sensor is more than or equal to 150cSt, and the viscosity sensor performs measurement in a first resonance mode; when the temperature is reduced to 24.2 ℃, the viscosity value measured by the viscosity sensor is more than or equal to 150cSt, and the measurement is still carried out in a first resonance mode;
7) the viscosity sensor represents a viscosity value of 0cSt in a measurement state in air, the vibrator 130 of the viscosity sensor performs vibration measurement in a damping mode in a liquid environment with viscosity, when the viscosity of liquid is particularly high, the vibration state of the vibrator 130 is weak, and the vibration state is regarded as a measurement upper limit of the sensor, particularly, an excitation signal of the sensor can be changed, energy applied to a vibration execution mechanism is increased, and the measurement upper limit of the viscosity sensor is further increased.
It should be noted that the embodiments of the present application are for the purpose of further understanding the present invention, but those skilled in the art can understand that: various alternatives and modifications are possible without departing from the invention and the scope of the appended claims, and therefore the invention should not be limited to the disclosure of the embodiments.
In all embodiments of the present application, the terms "large" and "small" are relatively speaking, and the terms "upper" and "lower" are relatively speaking, so that descriptions of these relative terms are not repeated herein.
It should be appreciated that reference throughout this specification to "in this embodiment," "in an embodiment of the present application," or "as an alternative implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in this embodiment," "in the examples of the present application," or "as an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are all alternative embodiments and that the acts and modules involved are not necessarily required for this application.
In various embodiments of the present application, it should be understood that the size of the serial number of each process described above does not mean that the execution sequence is necessarily sequential, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. The viscosity sensor device is characterized by comprising a vibration executing mechanism and a vibration detecting mechanism;
the vibration executing mechanism comprises a vibration conversion element, a circular flat diaphragm and a vibrator, wherein the vibration conversion element is arranged on a first surface of the circular flat diaphragm, the vibrator is arranged on a second surface of the circular flat diaphragm, and the vibrator vibrates along the normal line or the tangential line direction of the circular flat diaphragm;
the vibration detection mechanism comprises a vibration detection circuit, and the vibration detection circuit is connected with the vibration conversion element.
2. The viscosity sensor apparatus of claim 1, further comprising a first housing, the vibration conversion element being mounted inside the first housing.
3. The viscosity sensor device of claim 2, further comprising connectors that connect the vibration detection circuit and the vibration transducing element, respectively.
4. The viscosity sensor apparatus of claim 3, further comprising a second housing mounted on a side outer surface of the first housing, the connector being mounted within the second housing.
5. The viscosity sensor device of claim 4, further comprising a protective cover disposed on the other outer surface of the first housing, the vibrator being mounted within the protective cover.
6. The viscosity sensor device according to claim 1, wherein the vibrator is perpendicular to the surface of the circular flat diaphragm, and the vibration conversion element drives the circular flat diaphragm to vibrate in a tangential direction of the circular flat diaphragm when operating in the first resonant mode.
7. The viscosity sensor device of claim 6, wherein the vibration transducing element drives the circular planar diaphragm to vibrate in a direction normal to the circular planar diaphragm when operating in the second resonant mode.
8. The viscosity sensor apparatus of claim 7, wherein the vibration detection circuit comprises a first signal transmission line and a second signal transmission line, the first signal transmission line and the second signal transmission line being connected to the vibration transducing element, respectively.
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| CN202023086767.0U CN214097054U (en) | 2020-12-17 | 2020-12-17 | Viscosity sensor device |
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| CN202023086767.0U CN214097054U (en) | 2020-12-17 | 2020-12-17 | Viscosity sensor device |
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| CN214097054U true CN214097054U (en) | 2021-08-31 |
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