1. A intelligent home control bus having at least one input node (sensor, announcer) A and at least a output node (operator, listener) L, wherein the control instructions are input from the input node A, and transferred to the output node L through a control bus, and the output node L outputs a logic operation result based on the instructions; the network have the following features:
the node A being a control device for transmitting data, node A having at least one input circuit for inputting a special logical state, and node A having at least one event data packet, wherein the node A transmits the event data packet to the bus when the state of the input circuit is varied;
the node L being a device for receiving data and performing a operation, the node L having at least one output circuit for outputting a special logical state, the node L having at least one read-write memory for storing the data packet generated in the programming process;
After received the event data packet transmitted from the node a through the bus, the node L compares it with the data packet stored in the memory, and determines the output logical state according to the result of the comparing.
2. A intelligent home control bus according to the claim 1, wherein data packets of the node A had been stored in a nonvolatile memory of the node A in advance, that is, a programming is impossible at the node A.
3. A intelligent home control bus according to the claim 1, wherein the node L further comprise a programming button for making the node L into a programming state, that is, a programming is possible at the node L.
4. A intelligent home control bus according to the claim 1, the logical relationship between the node A and the node L is formed based on the programming of the user to the node L without any relationship with the signification of the data (packet) from the node A.
5. A intelligent home control bus according to the claim 1, wherein said read-write memory of the node L is the data memory contained in the processor of the node L or corresponding nonvolatile memories.
6. A intelligent home control bus according to the claim 1, wherein the node L further comprises at least one LED for showing the work state of the node L or for at least showing whether the node L enter the programming state or not.
7. A intelligent home control bus according to the claim 2, wherein the nonvolatile memory of the node A is the read-only memory contained in CPU or MPU of the node A.
8. A intelligent home control bus according to the claim 3, wherein the programming state is a state where the node L waits for the event data (packet) from node A and the data of any corresponding operational instruction, which are acceptable and explainable by the node L, from the programming device.
9. A intelligent home control bus according to the claim 8, wherein the event data (packet) from the node A, the corresponding operational instruction from programming device and so on, all of them will be stored into said read-write memory as data after programming.
10. A intelligent home control bus according to the claim 1, wherein node A transmits the data packet to the bus using an encoding method that is similar to that of Manchester’s code; the encoding method means that binary number 1 is made from one pulse (no matter with the direction of the pulse ), and binary number 0 is made from two reversed pulses which are same width.
11. A intelligent home control bus according to the claim 10, wherein the pulse wave period of the binary number 1 is equal to the sum of two pulses wave periods of the binary number 0, that is, the binary numbers 1 and 0 have the same transmit time (100 s) and the same speed (10 Kbps).
12. A intelligent home control bus according to the claim 10, wherein respective kinds of event data (packet) have the same length, i.e., 10 bytes, the first byte is data sort code, the second to ninth byte contains node ID code, and the tenth byte is the check sum of the total data (packet).
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
We claim:
1 A magneto-resistive CrO2 polymer composite blend for use in magnetic storage devices such as in the audio and video tapes as magnetic read heads, magnetic field probes, or current voltage sensors in electrical devices comprising
88-93% ww of the polymer preferably Low Density Poly Ethylene;
5-8% ww of magnetic filler preferably CrO2 and
2-4% ww of an additive.
2 The polymer composite blend as claimed in claim 1, wherein the said additive is conducting carbon.
3 The polymer composite blend as claimed in claim 1, wherein the said polymer is in the form of powder.
4 The polymer composite blend as claimed in claim 1, wherein the said magnetic filler is in the form of powder.
5 The polymer composite blend as claimed in claim 1, wherein the said additive is in the form of powder.
6 The polymer composite blend as claimed in claim 1, wherein the said low density polyethylene is having a mesh size 200 micron and 99.9% purity.
7 The polymer composite blend as claimed in claim 1, wherein the melting temperature of the said polymer is 95 C. under a pressure of 5 Kpa.
8 A process for the preparation of said magneto-resistive CrO2 polymer composite blend, comprising
mixing the said polymer, said CrO2 and said additive in a mortar pestle to obtain a homogenous mixture
heating the said homogenous mixture at a temperature of 95-100 C. to obtain a blended melt
casting the said melt between two metal plates to obtain sheets by applying the pressure.
9 The process as claimed in claim 8, wherein the said pressure is applied to the metal plates to obtain said sheet is from 4-5.5 KPa.
10 A process for the preparation of a magneto-resistive CrO2 polymer composite blend, comprising, mixing the said polymer, said CrO2 and said additive as conducting carbon to obtain a homogenous mixture transferring the said homogenous mixture in a die at a pressure of 4.5-5.5 KPa to obtain a pellet, placing the said pellet in a metallic mould and keeping the said mould in a preheated hot press machine maintained at a temperature of 95 C. at a pressure of 4-5.5 KPa, allowing the polymer to melt and flow into thick sheet, cooling the said mould to obtain a film having magnetic properties.
11 The process as claimed in claim 10, wherein the said mould is made up of metal, preferably of aluminum.
12 The process as claimed in claim 10, wherein the diameter of the said films varies from 10 mm to 25 mm depending on the size of the powder compact of the mixture.
13 The process as claimed in claim 10, wherein the said hot press machine is uni-axial hot press machine