# US 2014/0190773 A1 · Test method for an elevator system and a monitoring device for carrying out the test method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0190773 A1 - Document ID: US20140190773A1 - Status: Published application - Kind: A1 - Application number: 14/237,390 - Filed: 2012-07-24 - Published: 2014-07-10 - Earliest claimed: 2011-08-11 - Assignees: Inventio AG - Inventors: Astrid Sonnenmoser; David Michel; Martin Hess - Web page: https://patentgrep.com/patent/US20140190773A1 ## CPC - B66B 5/0006: {Monitoring devices or performance analysers (B66B5/02 takes precedence)} - B66B 5/0031: {for safety reasons} - B66B 13/22: Operation of door or gate contacts - B66B: ELEVATORS; ESCALATORS OR MOVING WALKWAYS ({apparatus for raising or lowering persons on theatrical stages or the like A63J5/12} ; funicular railbound systems with rigid ground-supported tracks and cable traction, e.g. cliff railways, B61B9/00; arrangements of ammunition handlers in vessels B63G3/00; hoists, lifts, or conveyors for loading or unloading in general B65G; braking or detent devices controlling normal movements of winding drums or barrels B66D; ship-lifting devices E02C; garages for many vehicles with mechanical means for lifting vehicles E04H6/12; hoists for feeding ammunition or projectiles to launching apparatus or to loading mechanisms F41A9/00) ## Abstract A test method is applied to an elevator system having a control unit and at least one bus node. The bus node has a first microprocessor and a second microprocessor and the control unit and the bus node communicate by a bus. Furthermore, the first microprocessor and the second microprocessor are connected without interruption by a signal line. The test method includes the steps: a specification signal is transmitted by the control unit to the first microprocessor, the first microprocessor transmits the signal to the second microprocessor, and the second microprocessor provides the signal for the control unit. Finally, the control unit verifies whether the provided signal corresponds to a signal expected by the control unit. The elevator system includes a monitoring device for carrying out the test method. ## Claims ### Claim at position 1 1-11. (canceled) ### Claim 12 A test method for an elevator installation having a control unit and at least one bus node which bus node has a first microprocessor and a second microprocessor, the control unit and the bus node communicating via a bus, and the first microprocessor and the second microprocessor being connected without interruption via a signal line, comprising the steps of: the control unit transmits a specification signal to the first microprocessor; the first microprocessor transmits a first signal corresponding to the specification signal to the second microprocessor via the signal line; the second microprocessor provides a response signal for the control unit in response to the first signal; and the control unit verifies whether the response signal provided corresponds to a second signal expected by the control unit. ### Claim 13 (depends on 12) The test method according to claim 12 wherein the second signal provided by the second microprocessor is queried by the control unit at predetermined intervals of time. ### Claim 14 (depends on 13) The test method according to claim 13 wherein the intervals of time are between 1 second and 100 seconds. ### Claim 15 (depends on 12) The test method according to claim 12 wherein the control unit responds to a negative verification of the second signal by changing the elevator installation to a safe operating state. ### Claim 16 (depends on 12) The test method according to claim 12 wherein the specification signal is one of a voltage value, a current value, a frequency value, a switched-on duration value and a code value. ### Claim 17 (depends on 12) The test method according to claim 12 wherein the first signal transmitted from the first microprocessor to the second microprocessor is transmitted via a direct signal line inside the bus node. ### Claim 18 (depends on 12) The test method according to claim 12 including transmitting at least two specification signals having different values from the control unit to the first microprocessor, and the control unit verifying whether the response signal respectively provided by the second microprocessor corresponds to the second signal expected by the control unit. ### Claim 19 (depends on 12) The test method according to claim 12 including transmitting the specification signal having an error value from the control unit to the first microprocessor, and the control unit verifying whether the second microprocessor spontaneously transmits the response signal to the control unit. ### Claim 20 A monitoring device for carrying out a test method for an elevator system comprising: a control unit for generating a specification signal; at least one bus node including a first microprocessor and a second microprocessor; a bus connecting the control unit and the bus node, the control unit communicating the specification signal to the first microprocessor in the bus node via the bus; and the first microprocessor and the second microprocessor being connected without interruption via a signal line, the first microprocessor responding to the specification signal by generating a first signal to the second microprocessor for generating a response signal to the control unit via the bus. ### Claim 21 (depends on 20) The monitoring device according to claim 20 wherein the signal line directly connects the first microprocessor and the second microprocessor, ### Claim 22 (depends on 20) The monitoring device according to claim 20 wherein the signal line is arranged inside the bus node.