CN220831583U - Empty state sensor of liquid storage tank, liquid medicine tank, spraying system and unmanned aerial vehicle - Google Patents
Empty state sensor of liquid storage tank, liquid medicine tank, spraying system and unmanned aerial vehicle Download PDFInfo
- Publication number
- CN220831583U CN220831583U CN202322570864.4U CN202322570864U CN220831583U CN 220831583 U CN220831583 U CN 220831583U CN 202322570864 U CN202322570864 U CN 202322570864U CN 220831583 U CN220831583 U CN 220831583U
- Authority
- CN
- China
- Prior art keywords
- tank
- liquid medicine
- temperature
- liquid
- detecting element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007788 liquid Substances 0.000 title abstract description 125
- 239000003814 drug Substances 0.000 title abstract description 94
- 238000005507 spraying Methods 0.000 title abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 55
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 239000007921 spray Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 13
- 238000005086 pumping Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000000575 pesticide Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Catching Or Destruction (AREA)
Abstract
The embodiment of the utility model provides a liquid storage tank empty state sensor, a liquid medicine tank, a spraying system and an unmanned aerial vehicle, and relates to the technical field of liquid medicine tank detection. The empty tank state sensor of the liquid tank comprises a heat conducting piece, a heating piece and a temperature detecting element, wherein the heating piece is arranged on the heat conducting piece, the temperature detecting element is arranged on the heat conducting piece and is distributed with the heating piece at intervals, the temperature detecting element is used for acquiring the temperature of the position where the temperature detecting element is located, and the empty tank state sensor of the liquid tank can be applied to a tank body of a liquid tank, so that the accuracy of detecting the empty tank state of the liquid tank is improved.
Description
Technical Field
The utility model relates to the technical field of detection of liquid medicine boxes, in particular to a liquid medicine box empty state sensor, a liquid medicine box, a spraying system and an unmanned aerial vehicle.
Background
With the development of agricultural technology, plant protection machines, such as plant protection unmanned aerial vehicles, are increasingly used in pesticide spraying and other large-scale operations.
In the prior art, because agricultural unmanned aerial vehicle works in vibration environment, liquid medicine in the liquid medicine case of agricultural unmanned aerial vehicle produces a large amount of bubbles owing to the vibration, to non-contact liquid level detection, for example ultrasonic detection, because bubble influences the detection for misdetection is liquid medicine when there is not liquid medicine, lead to leaking to beat the medicine, influence the operation effect, or other modes that are used for detecting empty box are generally capacitive or float type, the capacitive is because the difference of liquid medicine, dielectric constant phase difference is great, and liquid medicine case surface residual liquid medicine or bubble lead to the false detection, and float type, because vibration condition is down to the float, detection error is great, the empty box state of all unable accurate detection liquid medicine case.
Disclosure of utility model
The utility model provides a liquid storage tank empty state sensor, a liquid medicine tank, a spraying system and an unmanned aerial vehicle, which can improve the accuracy of detecting the liquid medicine tank empty state.
Embodiments of the utility model may be implemented as follows:
In a first aspect, the present utility model provides a tank empty status sensor comprising:
a heat conductive member;
the heating piece is arranged on the heat conducting piece; and
The temperature detection elements are arranged on the heat conducting piece and are distributed with the heating piece at intervals, and the temperature detection elements are used for acquiring the temperature of the position where the temperature detection elements are located.
In an alternative embodiment, the heat conducting member is made of metal.
In an alternative embodiment, the heat conducting member is a plate structure.
In an alternative embodiment, the heating element is a heating resistor.
In an alternative embodiment, the temperature sensing element is a temperature sensitive resistor.
In a second aspect, the utility model provides a liquid medicine tank, which comprises a tank body and the empty tank state sensor of the liquid storage tank, wherein the heat conducting piece is connected with the tank body.
In an alternative embodiment, the tank empty status sensor is located at the bottom of the tank.
In an alternative embodiment, the medical fluid tank further comprises a liquid level sensor, and the liquid level sensor is arranged on the tank body.
In an alternative embodiment, the height of the liquid level sensor is greater than the height of the tank empty status sensor.
In a third aspect, the present utility model provides a spray system comprising a spray head, a water pump and a liquid medicine tank according to any one of the preceding embodiments, the spray head being in communication with the liquid medicine tank via the water pump, the water pump being for pumping liquid in the liquid medicine tank to the spray head.
In a fourth aspect, the present utility model provides a unmanned aerial vehicle, including a fuselage and a spraying system according to the previous embodiment, the spraying system being mounted on the fuselage.
The liquid storage tank empty state sensor, the liquid medicine tank, the spraying system and the unmanned aerial vehicle have the beneficial effects that:
The utility model provides a liquid storage tank empty state sensor, which comprises a heat conducting piece, a heating piece and a temperature detecting element, wherein the heating piece is arranged on the heat conducting piece, the temperature detecting element is arranged on the heat conducting piece and is distributed with the heating piece at intervals, the temperature detecting element is used for acquiring the temperature of the position of the temperature detecting element, the liquid storage tank empty state sensor can be applied to a tank body of a liquid medicine tank, when liquid medicine exists in the liquid medicine tank, the gap between the heating piece and the temperature detecting element is liquid medicine, the heat of the heating piece is mainly transferred to the liquid medicine, therefore, the temperature acquired by the temperature detecting element is not high, when the liquid medicine in the liquid medicine tank is emptied, the tank body is in an empty state, the gap between the heating piece and the temperature detecting element is air, and the heat generated by the heating piece is mainly transferred to the temperature detecting element through the heat conducting piece, and the heat sensed by the temperature detecting element is greatly increased, so that the liquid medicine tank is in an empty state can be judged, and the accuracy of detecting the liquid medicine tank empty state is improved.
The utility model provides a liquid medicine box, which comprises a box body and the liquid medicine box empty state sensor, wherein a heat conducting piece is connected with the box body, and the liquid medicine box has all functions of the liquid medicine box empty state sensor.
The utility model provides a spraying system which comprises a spray head, a water pump and the liquid medicine box, wherein the spray head is communicated with the liquid medicine box through the water pump, the water pump is used for pumping liquid in the liquid medicine box to the spray head, and the spraying system has all functions of the liquid medicine box.
The utility model provides an unmanned aerial vehicle, which comprises a body and the spraying system, wherein the spraying system is arranged on the body, and the unmanned aerial vehicle has all functions of the spraying system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a medical fluid tank provided in an embodiment of the present utility model;
Fig. 2 is a schematic diagram of a tank empty status sensor provided in an embodiment of the utility model.
Icon: 1000-a liquid medicine box; 100-box body; 200-a liquid storage tank empty state sensor; 210-a heat conducting member; 220-heating element; 230-a temperature detecting element; 300-level sensor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.
Referring to fig. 1 and 2, the liquid tank empty state sensor, the liquid medicine tank 1000, the spraying system, the unmanned aerial vehicle and the empty detection method according to the embodiment of the utility model can solve the problem, and will be described in detail.
The utility model provides an unmanned aerial vehicle, which is a rotor unmanned aerial vehicle, in particular a four-rotor unmanned aerial vehicle, and of course, the unmanned aerial vehicle can also be a single-rotor unmanned aerial vehicle, a double-rotor unmanned aerial vehicle, a six-rotor unmanned aerial vehicle, an eight-rotor unmanned aerial vehicle and the like. The unmanned aerial vehicle can automatically run according to a preset path, flight speed, gesture and the like, or is manually controlled by an operator.
This unmanned aerial vehicle includes fuselage (not shown) and sprinkler system, and sprinkler system installs in the fuselage, and wherein, sprinkler system includes shower nozzle (not shown), water pump (not shown) and liquid medicine case 1000, and the shower nozzle passes through the box 100 (detailed below) intercommunication of water pump and liquid medicine case, and the water pump is used for the liquid pumping to the shower nozzle in the box 100 of liquid medicine case.
The liquid medicine tank 1000 includes a tank body 100 and a tank empty state sensor 200, the tank body 100 can be installed on a machine body, the heat conducting element 210 is connected with the tank body 100, and the liquid medicine tank 1000 can improve the accuracy of detecting the empty state of the liquid medicine tank.
In general, pesticides may be stored in the pesticide tank 1000 so that the unmanned aerial vehicle sprays the pesticides in the pesticide tank 1000 during a flight operation.
Specifically, the empty state sensor 200 includes a heat conducting member 210, a heating member 220, and a temperature detecting element 230, the heating member 220 is disposed on the heat conducting member 210, the temperature detecting element 230 is disposed on the heat conducting member 210 and is spaced apart from the heating member 220, the temperature detecting element 230 is used for obtaining the temperature of the position where the temperature detecting element 230 is located, and the empty state sensor 200 can be applied to the tank body 100 of the medical fluid tank 1000.
When the liquid medicine is in the liquid medicine tank 1000, the gap between the heating element 220 and the temperature detecting element 230 is the liquid medicine, and the heat of the heating element 220 is mainly transferred to the liquid medicine, so that the temperature obtained by the temperature detecting element 230 is not high, and when the liquid medicine in the liquid medicine tank 1000 is emptied, the tank body 100 is in an empty tank state, and the gap between the heating element 220 and the temperature detecting element 230 is air.
Because the thermal conductivity and specific heat capacity of the air are much smaller than those of the liquid medicine, the heat generated by the heating element 220 is mainly transferred to the temperature detecting element 230 through the thermal conducting element 210, the heat sensed by the temperature detecting element 230 is greatly increased, and the air bubble is not influenced, so that the liquid medicine tank 1000 can be judged to be in an empty state, and the accuracy of detecting the empty state of the liquid medicine tank 1000 is improved.
For convenience of heat conduction, the heat conducting member 210 may be made of metal to facilitate heat conduction, and meanwhile, the heat conducting member 210 is of a plate structure. In this embodiment, the heating element 220 is a heating resistor, and the temperature detecting element 230 is a temperature sensitive resistor, so as to sense a temperature change.
In addition, in order to conveniently know the liquid medicine amount in the liquid medicine tank 1000, the liquid medicine tank 1000 further comprises a liquid level sensor 300, the liquid level sensor 300 is arranged on the tank body 100, the liquid level sensor 300 is arranged on the top of the tank body 100, and the liquid level sensor 300 can detect the liquid level height of the tank body 100 in an ultrasonic detection mode.
The height of the liquid level sensor 300 is greater than that of the liquid tank empty state sensor 200, and meanwhile, the liquid tank empty state sensor 200 is located at the bottom of the tank body 100, so that when the liquid medicine in the tank body 100 is used up, the gap between the heating element 220 and the temperature detecting element 230 is changed from the liquid medicine into air, and the detection accuracy of the empty state is improved.
The utility model also provides an empty box detection method, which can be applied to the liquid medicine box 1000, and comprises the following steps: controlling the heating member 220 to heat; acquiring a first temperature output by the temperature detecting element 230; according to the first temperature, it is determined whether the case 100 is in an empty case state.
When the liquid medicine is in the liquid medicine tank 1000, the gap between the heating element 220 and the temperature detecting element 230 is the liquid medicine, and the heat of the heating element 220 is mainly transferred to the liquid medicine, so that the first temperature obtained by the temperature detecting element 230 is not high, when the liquid medicine in the liquid medicine tank 1000 is emptied, the tank body 100 is in an empty tank state, the gap between the heating element 220 and the temperature detecting element 230 is air, and the heat generated by the heating element 220 is mainly transferred to the temperature detecting element 230 through the heat conducting element 210 because the heat conductivity and the specific heat capacity of the air are much smaller than those of the liquid medicine, the heat sensed by the temperature detecting element 230 is greatly increased, and the first temperature is raised to a preset value, so that the liquid medicine tank 1000 can be judged to be in the empty tank state.
It should be noted that, according to the first temperature, the step of determining whether the box 100 is in the empty box state includes:
acquiring a second temperature output by the temperature detecting element 230 when the heating element 220 is not heated; whether the case 100 is in the empty case state is judged according to the relationship between the first temperature and the second temperature.
Specifically, the step of determining whether the case 100 is in the empty case state according to the relationship between the first temperature and the second temperature includes: comparing the first temperature with the second temperature to obtain a temperature difference value; judging whether the temperature difference is larger than a preset reference value or not; if the temperature difference is greater than or equal to the preset reference value, the tank 100 is in an empty tank state, and if the temperature difference is less than the preset reference value, the tank 100 is in a liquid-carrying state.
In this embodiment, the step of obtaining the first temperature output by the temperature detecting element 230 includes: a first temperature output in real time by the temperature detecting element 230 is acquired.
The step of controlling the heating of the heating member 220 includes: constant power heats the heating member 220.
That is, after the unmanned aerial vehicle is mounted with the chemical tank 1000 containing the chemical, at this time, the heating element 220 is not heated, the second temperature output from the temperature detecting element 230 is first obtained, and then the heating element 220 is heated with constant power, and at the same time, the first temperature output from the temperature detecting element 230 is obtained in real time.
Comparing the first temperature with the second temperature to obtain a temperature difference value; judging whether the temperature difference is larger than a preset reference value or not; if the temperature difference is greater than or equal to the preset reference value, the box 100 is in an empty box state, a signal of the empty box state is fed back to the controller of the unmanned aerial vehicle, the unmanned aerial vehicle controller controls the unmanned aerial vehicle to finish operation and returns the refilled liquid medicine, and if the temperature difference is less than the preset reference value, the box 100 is in a liquid carrying state, and the unmanned aerial vehicle continues to execute spraying operation.
In summary, the empty tank status sensor 200 includes a heat conducting member 210, a heating member 220 and a temperature detecting element 230, the heating member 220 is disposed on the heat conducting member 210, the temperature detecting element 230 is disposed on the heat conducting member 210 and is spaced apart from the heating member 220, the temperature detecting element 230 is used for obtaining the temperature of the position of the temperature detecting element 230, and the empty tank status sensor 200 can be applied to the tank body 100 of the medical liquid tank 1000.
When the liquid medicine is in the liquid medicine tank 1000, the gap between the heating element 220 and the temperature detecting element 230 is the liquid medicine, and the heat of the heating element 220 is mainly transferred to the liquid medicine, so that the temperature obtained by the temperature detecting element 230 is not high, when the liquid medicine in the liquid medicine tank 1000 is emptied, the tank body 100 is in an empty state, and the gap between the heating element 220 and the temperature detecting element 230 is air, because the heat conductivity coefficient and the specific heat capacity of the air are much smaller than those of the liquid medicine, the heat generated by the heating element 220 is mainly transferred to the temperature detecting element 230 through the heat conducting element 210, and the heat sensed by the temperature detecting element 230 is greatly increased, so that the liquid medicine tank 1000 is in the empty state, and the accuracy of detecting the empty state of the liquid medicine tank 1000 is improved.
The chemical tank 1000 includes the tank body 100 and the tank empty state sensor 200, and the heat conductive member 210 is connected to the tank body 100, and the chemical tank 1000 has all the functions of the tank empty state sensor 200.
It should be noted that the connection manner between the heat conducting member 210 and the case 100 may be an indirect connection, for example, in some embodiments, the heating member 220 or the temperature detecting element 230 is fixed to the case 100, and the heat conducting member 210 is connected to the case 100 through the heating member 220 or the temperature detecting element 230.
The spraying system comprises a spray head, a water pump and the liquid medicine box, wherein the spray head is communicated with the liquid medicine box through the water pump, the water pump is used for pumping liquid in the liquid medicine box to the spray head, and the spraying system has all functions of the liquid medicine box.
The unmanned aerial vehicle comprises a machine body and the spraying system, wherein the spraying system is arranged on the machine body, and the unmanned aerial vehicle has all functions of the spraying system.
The empty tank detection method is applied to the liquid medicine tank 1000, and the method comprises the following steps: controlling the heating member 220 to heat; acquiring a first temperature output by the temperature detecting element 230; according to the first temperature, it is determined whether the tank body 100 is in an empty tank state, when the liquid medicine is in the liquid medicine tank 1000, the gap between the heating element 220 and the temperature detecting element 230 is the liquid medicine, and the heat of the heating element 220 is mainly transferred to the liquid medicine, so that the first temperature obtained by the temperature detecting element 230 is not high, when the liquid medicine in the liquid medicine tank 1000 is emptied, the tank body 100 is in the empty tank state, the gap between the heating element 220 and the temperature detecting element 230 is air, and since the heat conductivity and the specific heat capacity of the air are much smaller than those of the liquid medicine, the heat generated by the heating element 220 is mainly transferred to the temperature detecting element 230 through the heat conducting element 210, the heat sensed by the temperature detecting element 230 is greatly increased, and the first temperature is raised to a preset value, so that it can be determined that the liquid medicine tank 1000 is in the empty tank state.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (11)
1. A tank empty status sensor, comprising:
A heat conductive member (210);
A heating member (220), the heating member (220) being disposed on the heat conductive member (210); and
And the temperature detection elements (230) are arranged on the heat conducting piece (210) and are distributed at intervals with the heating piece (220), and the temperature detection elements (230) are used for acquiring the temperature of the position where the temperature detection elements (230) are located.
2. The tank empty status sensor according to claim 1, characterized in that the heat conducting member (210) is made of metal.
3. The tank empty status sensor according to claim 1, wherein the heat conducting member (210) is a plate structure.
4. The tank empty status sensor according to claim 1, characterized in that the heating element (220) is a heating resistor.
5. The tank empty status sensor according to claim 1, wherein the temperature detecting element (230) is a temperature sensitive resistor.
6. A medical fluid tank, characterized by comprising a tank body (100) and the tank empty state sensor according to any one of claims 1-5, wherein the heat conducting member (210) is connected to the tank body (100).
7. The medical fluid tank according to claim 6, wherein the tank empty status sensor is located at the bottom of the tank (100).
8. The medical fluid tank according to claim 6, further comprising a fluid level sensor (300), wherein the fluid level sensor (300) is arranged at the tank body (100).
9. The medical fluid tank of claim 8, wherein the level sensor (300) has a height that is greater than a height of the tank empty status sensor.
10. A spray system comprising a spray head, a water pump and the medical fluid tank of any one of claims 6-9, the spray head being in communication with the medical fluid tank via the water pump, the water pump being for pumping fluid within the medical fluid tank to the spray head.
11. A drone comprising a fuselage and the sprinkler system of claim 10 mounted to the fuselage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322570864.4U CN220831583U (en) | 2023-09-20 | 2023-09-20 | Empty state sensor of liquid storage tank, liquid medicine tank, spraying system and unmanned aerial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322570864.4U CN220831583U (en) | 2023-09-20 | 2023-09-20 | Empty state sensor of liquid storage tank, liquid medicine tank, spraying system and unmanned aerial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220831583U true CN220831583U (en) | 2024-04-26 |
Family
ID=90747626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322570864.4U Active CN220831583U (en) | 2023-09-20 | 2023-09-20 | Empty state sensor of liquid storage tank, liquid medicine tank, spraying system and unmanned aerial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220831583U (en) |
-
2023
- 2023-09-20 CN CN202322570864.4U patent/CN220831583U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4964185A (en) | Chemical solution dispenser apparatus and method of using | |
| US11737496B2 (en) | Device and method for checking fill level of a cartridge | |
| EP0229038A2 (en) | Chemical solution dispenser apparatus and method of use thereof | |
| CN101929490A (en) | Leak detection system in the wind turbine | |
| CN220831583U (en) | Empty state sensor of liquid storage tank, liquid medicine tank, spraying system and unmanned aerial vehicle | |
| CN107063386A (en) | A kind of passive type liquid level emasuring device | |
| CN105829832A (en) | Method and apparatus for determining an angle of rotation of an object about an axis of rotation | |
| EP3620050B1 (en) | Mobile agricultural sprayer and method of determining a concentration of chemical residue | |
| CN202769969U (en) | Drinking water heating device with boiling point automatic monitoring calibration | |
| CN108120485A (en) | A kind of ocean robot fuel tank fuel quantity measuring device and method | |
| EP2769918A1 (en) | Detecting propellant levels in spacecraft | |
| CN106989719A (en) | A kind of logistics unmanned plane method for determining height, device and unmanned plane | |
| CN104634030B (en) | The cold water temperature control method of refrigerating plant and refrigerating plant | |
| CN111547362B (en) | Measuring device for a cover for covering a container | |
| CN104977597A (en) | Inertial navigation-based GPS measurement system | |
| CN206695866U (en) | A kind of level monitoring device suitable for liquid nitrogen container | |
| JP2001264277A (en) | Method and device for detecting concentration and chemical diluting dispensing device | |
| CN108706533B (en) | High-altitude operation vehicle intelligent hydraulic failure analysis methods and system | |
| CN105759858A (en) | Control method of food processing machine | |
| JP2018138901A (en) | Detection device | |
| CN206847718U (en) | A kind of passive type liquid level emasuring device | |
| CN113043750B (en) | Liquid level sensing device and method, consumable verification method and print cartridge | |
| TWI442050B (en) | Contact object water content sensing device, sensing method and computer program products | |
| CN206627124U (en) | A kind of self-adapting calibration system of motion sensor | |
| US6799535B2 (en) | Method and system for measuring mobility of a tested animal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |