JPH0240588B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an elevator failure notification device that transmits elevator failure information to a central control center via a communication device.

[Prior Art] Elevator failure information is usually transmitted to a central control center by a communication device using a telephone line, and the control center takes appropriate measures based on input of the failure information. become.

However, conventionally, when multiple elevators are installed in a building, it is necessary to provide input interfaces for the number of elevators on the communication device side, and the elevator control panel is designed to detect failures in each elevator. Transmission paths to and from the communication equipment must also be provided for the number of elevators, resulting in a significant increase in costs.

[Summary of the Invention] The present invention has been made in view of the above points, and has an object to transmit failure information of each elevator to a communication device using a single transmission path, thereby reducing costs. The present invention provides an elevator failure reporting device that can perform the following functions.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In Figure 1, 1A, 1
B and 1C are elevator control panels designed to control each elevator and obtain elevator failure information, and are connected in parallel to each other and connected to the communication device 3 via a single transmission line 2. .

Therefore, 4 is each of the above-mentioned elevator control panels 1A,
A common control panel that controls the timing of transmitting failure information from 1B and 1C to the communication device 3 via the transmission line 2 transmits timing signals f, g, h as shown in Fig. 2 a, b,
As shown in c, they are made active for Tc time sequentially.
(Tc is set to a time sufficient for each elevator control panel to transmit elevator failure information).
When the elevator control board detects it, the elevator control board checks whether the timing signal to its own machine is active or not, and if the timing signal to its own machine is active, it encodes the fault information and transmits the signal. The data is transmitted to a communication device 3 via a transmission path 2. Further, when the timing signal to the own machine is not active, the failure information is transmitted after waiting until it becomes active.

That is, elevator control panels 1A, 1B, 1C
is serialized based on the logical product condition (AND element 10) of the timing signal f from the common control panel 4 as illustrated in the elevator control panel 1A and the coded fault information that is repeated for a certain period of time (Te). Failure information is transmitted from the transmission/output transistor 11 to the communication device 3 via the transmission path 2, and the failure information of each elevator is sequentially sent to the communication device 3 via the transmission path 2 based on a timing signal. .

Here, as is conventionally known, each elevator control panel 1A to 1C encodes the failure information of each elevator and repeatedly transmits it for a certain period of time Te by serial transmission. As shown in the figure, it consists of a 1-bit start bit, 8 data bits, and a stop bit.
The 2nd bit is the jamming status signal, the 1st bit is unusable, the 2nd bit is the motor temperature abnormality, the 3rd bit is the door failure, the 4th bit is the landing failure, and the 5th to 7th bits are used to determine the operating number. For example, ( 100), elevator control panel 1A, (010), elevator control panel 1B, (001), elevator control panel 1C.
It is designed to determine the machine number corresponding to each.

According to the above configuration, as shown in FIG. 2 a to c, the timing signals f, g, h are sequentially sent out from the common control panel 4 every cycle Tc, and then the control is repeated in which the timing signals are sent out sequentially again after a period of Tc. It turns out.

Therefore, elevator control panels 1A, 1B, 1
When C detects the occurrence of a corresponding elevator failure, it will send out a signal with a code corresponding to the failure via transmission path 2, and the transmission time will be
The value of Te (Fig. 2 d to f) is set to be sufficiently larger than 4×Tc, and the period Tc of the timing signals f, g, and h is
By selecting a value that is sufficiently larger than the time required to send one fault information, the fault information from the elevator control panels 1A, 1B, and 1C continues for Te, so a timing signal must exist during this time. Failure information (second
g) can be sent to the communication device 3. Then, each elevator control panel can send failure information to the communication device 3 independently from each other.

Note that the above embodiment describes the transmission of failure information for three elevators, but even if the number of elevators is three or more, the timing signal is increased and the value of Te is calculated as the number of elevators x Te. By making the above selections, it can be easily expanded.

[Effects of the Invention] As described above, according to the present invention, the first means repeatedly transmits failure information during the first period, and the communication device transmits the failure information through a single transmission path only during the period when the timing signal is active. an elevator control panel having a second means for transmitting failure information to a plurality of elevators; an elevator control panel group having this elevator control panel provided in each of a plurality of elevators and connected in parallel to each other; A timing signal set to be longer than the sending period is sent to each control panel of the elevator control panel group separately and sequentially with staggered timing, and the time it takes for one round of sending to each control panel. Since it is equipped with a common control panel that sets the time period to be shorter than the first period, it is possible to reliably transmit multiple pieces of fault information using a single communication device and transmission path regardless of the number of elevators, which can significantly reduce costs. You can try to bring it down.

[Brief explanation of drawings]

FIG. 1 is a circuit configuration diagram showing an embodiment of the present invention;
Figure 2 is a time chart of the operation of each part in Figure 1.
The figure is a frame configuration diagram illustrating the form of a transmission signal. 1A, 1B, 1C...Elevator control panel, 2...Transmission line, 3...Communication device, 4...Common control panel, f, g,
h...Timing signal.

Claims (1)

[Claims] 1. A first means for repeatedly sending failure information at a predetermined transmission frame period during a first period, and transmitting failure information to a communication device via a single transmission path only during a period when a timing signal is active. an elevator control panel having a second means for transmitting information; an elevator control panel group in which the elevator control panel is provided in each of a plurality of elevators and connected in parallel with each other; an active period is the transmission frame period of the failure information; A timing signal set to be longer than the above is sent to each control panel of the elevator control panel group separately and in order with shifted timing, and the time it takes for one round of sending to each control panel is set as above. A common control panel that is set to be shorter than the first period. A failure reporting device for an elevator.