[특허]Level sensors for metering system container

CNH America LLC

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Level sensors for metering system container

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B67D-007/14 G01F-023/00
미국특허분류(USC)	222/065; 222/412; 222/056; 222/066; 073/301
출원번호	US-0533799 (2009-07-31)
등록번호	US-8464907 (2013-06-18)
발명자 / 주소	Ellingson, Jon Lagred, Ed Walton, Jerry
출원인 / 주소	CNH America LLC
대리인 / 주소	Henkel, Rebecca
인용정보	피인용 횟수 : 0 인용 특허 : 17

초록
▼

Level sensors for a metering system container are provided that facilitate determining material level within the container despite dusty or damp conditions. In an exemplary embodiment, a material metering system includes a first sensor assembly disposed within a lower portion of the container and a second sensor assembly disposed within an upper portion of the container. Each sensor assembly is configured to output a signal indicative of contact with the material. The material metering system also includes a controller communicatively coupled to the first and second sensor assemblies and configured to engage a transfer of material to the container in response to the signal from the first sensor assembly indicative of contact with the material and to disengage the transfer of material to the container in response to the signal from the second sensor assembly indicative of contact with the material.

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1. An agricultural material distribution system, comprising: a material holding bin;a metering system including a container, the metering system configured to deliver material from the container to an agricultural field as the distribution system is transported through the field;a material transport system configured to deliver material from the material holding bin to an opening within an upper portion of the container;a first sensor assembly positioned within a lower portion of the container and configured to indicate a low material level in the container based on physical contact with the material;a second sensor assembly positioned within the upper portion of the container and configured to indicate a substantially full material level in the container based on physical contact with the material; anda controller communicatively coupled to the first and second sensor assemblies and configured to operate the material transport system in response to output from the first and second sensor assemblies: wherein each pressure sensor assembly is substantially sealed and includes a filter configured to block material form entering the sensor assembly. 2. The agricultural material distribution system of claim 1, wherein the first and second sensor assemblies each comprise a pressure sensor. 3. The agricultural material distribution system of claim 2, wherein each pressure sensor comprises a diaphragm sensor. 4. The agricultural material distribution system of claim 3, wherein each sensor assembly further comprises means for preventing contaminants from entering the sensor assembly and for permitting free movement of a diaphragm. 5. The agricultural material distribution system of claim 1, wherein the metering system is configured to distribute the material from the lower portion of the container to a soil region. 6. The agricultural material distribution system of claim 1, wherein the controller is configured to activate the material transport system in response to output from the first sensor assembly indicating the low material level and to deactivate the material transport system in response to output from the second sensor assembly indicating the substantially full material level. 7. The agricultural material distribution system of claim 1, wherein the agricultural material distribution system is configured to be mounted on a vehicle. 8. A material metering system, comprising: a first pressure sensor assembly configured to indicate a low material level in a container;a second pressure sensor assembly configured to indicate a substantially full material level in the container; anda controller communicatively coupled to the first and second pressure sensor assemblies and configured to engage a transfer of material to the container in response to the low material level indication from the first pressure sensor assembly and to disengage the transfer of material to the container in response to the substantially full material level indication from the second pressure sensor assembly: wherein each pressure sensor assembly is substantially scaled and includes a filter configured to block material from entering the sensor assembly. 9. The material metering system of claim 8, wherein the material metering system is configured to receive material through an opening in an upper portion of the container. 10. The material metering system of claim 8, wherein the material metering system is configured to distribute material from a lower portion of the container to a soil region. 11. The material metering system of claim 8, wherein the first and second pressure sensor assemblies are configured to measure the pressure of a substantially dry powder. 12. The material metering system of claim 8, wherein the first and second pressure sensor assemblies each comprise a diaphragm sensor. 13. A material metering system, comprising: a first pressure sensor assembly configured to indicate a low material level in a container;a second pressure sensor assembly configured to indicate a substantially full material level in the container; anda controller communicatively coupled to the first and second pressure sensor assemblies and configured to engage a transfer of material to the container in response to the low material level indication from the first pressure sensor assembly and to disengage the transfer of material to the container in response to the substantially full material level indication from the second pressure sensor assembly; wherein the first and second pressure sensor assemblies each comprise a reed switch. 14. The material metering system of claim 8, wherein the controller is configured to activate an auger in response to the low material level indication from the first pressure sensor assembly and to deactivate the auger in response to the substantially full material level indication from the second pressure sensor assembly. 15. A material metering system, comprising: a container configured to receive material through an opening within an upper portion of the container;a first sensor assembly disposed within a lower portion of the container and configured to output a signal indicative of contact with the material;a second sensor assembly disposed within the upper portion of the container and configured to output a signal indicative of contact with the material; anda controller communicatively coupled to the first and second sensor assemblies and configured to engage a transfer of material to the container in response to the signal from the first sensor assembly indicative of contact with the material and to disengage the transfer of material to the container in response to the signal from the second sensor assembly indicative of contact with the material; wherein the first and second sensor assemblies each comprise a diaphragm sensor configured to detect contact with a substantially dry powder; wherein each diaphragm sensor comprises a substantially sealed enclosure including a filter configured to block material from entering the enclosure while facilitate the passage of air. 16. The material metering system of claim 15, wherein the first sensor assembly is positioned at a location corresponding to a low material level and the second sensor assembly is positioned at a location corresponding to a substantially full material level. 17. The material metering system of claim 15, wherein the controller is configured to activate an auger in response to the signal from the first sensor assembly indicative of contact with the material and to deactivate the auger in response to the signal from the second sensor assembly indicative of contact with the material.

이 특허에 인용된 특허 (17)

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특허 상세정보

Level sensors for metering system container

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특허 상세정보

Level sensors for metering system container

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이 특허에 인용된 특허 (17)

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IPC 상세정보(version : 201201)

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