JPH04855Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a repeater for a disaster prevention monitoring device.

[Background technology] Figure 3 shows the overall system configuration of the basic disaster prevention monitoring device.
The transmission signal formed in the format shown in FIG. ₄ is transmitted cyclically by time division multiplexing through ₁₀ Receive monitoring data from...
The transmission signal is a start mark indicating the beginning of the signal.
ST, mode data MD indicating control data polling or monitoring data polling, and repeater 3 ₁₀
Address data AD for calling ..., control data CD to be passed to repeater 3 ₁₀ ..., repeater 3 ₁₀
It consists of a return waiting period that sets the timing for returning the monitoring data RD from...
It is transmitted sequentially from the smoke prevention receiver 1.

FIG. 5 shows a basic circuit of the repeater 3, and the repeater 3 basically comprises a transmission signal processing section 4, a control output section 5, and a monitoring input section 6.
The transmission signal processing unit 4 has a function of receiving the transmission signal and returning the monitoring data RD, and an address comparison function of comparing the address data AD of the received transmission signal and the repeater-specific address to determine a match.
It is equipped with signal processing functions such as mode data MD determination. The control output unit 5 generates a control signal for driving a relay etc. that controls an external load from the control data CD received by the transmission signal processing unit 4 in accordance with the mode data MD when the addresses match, together with a control output timing pulse. The monitoring input section 6 is for receiving operation monitoring input of an external load or its own control check input from the outside using, for example, a contact signal, and returning it from the transmission signal processing section 4 as monitoring data RD.

By the way, as the repeater 3 used in the disaster prevention monitoring device, there are control repeaters 3 ₁₀ , 3 as shown in FIG.
₁₁ ... and monitoring repeaters 3 ₂₀ , 3 ₂₁ . The control repeaters 3 ₁₀ , 3 ₁₁ ... drive the relays to control the smoke prevention equipment 7, which is an external load, and take in the state of the relay contacts of the relays as their own control check inputs to monitor their own control. This is to return the RD. The monitoring repeaters 3 ₂₀ , 3 ₂₁ ... take in the device contacts provided in the smoke prevention device 7 and open and close according to the device operation as the operation monitoring input of the smoke prevention device 7, and send the monitoring data to the smoke prevention device 1. This will be returned as an RD.

Here, if the number of monitoring input points per repeater is twice the number of control output points, the operating status monitoring and control check can be performed in the same repeater, but in the conventional repeater 3 of this type, the number of monitoring input points and Most of them have the same number of control input points, and as mentioned above, there are two types of repeaters. Moreover, the monitoring input section 6 has the following problems. In other words, in order to eliminate noise, the monitoring input section 6 is widely used in a configuration in which the monitoring input is latched twice by a sampling input latch circuit 8 as shown in FIG.
It is set at a level of several tens of milliseconds, taking into account the chattering of the device contacts for external load operation monitoring input.
If this sampling width is longer than the width of one channel of the transmission signal, the control check timing of control-driven relays etc. cannot be obtained continuously after control data polling, and it is impossible to return the monitoring data RD by continuous polling. There's a problem. In other words, the data selector is switched using the control output timing pulse, etc., and monitoring data consisting of control check input is generated by continuous polling.
There is a problem in that the RD cannot be sent back and the transmission program on the smoke prevention receiver 1 side becomes complicated.

To further explain this problem based on Fig. 7, if the smoke prevention equipment 7 is controlled by the 1ch transmission signal shown in Fig. 7a, the monitoring input by the relay contact changes as shown in Fig. 7c. However, the transmission signal processing section 6 can take in the monitoring data RD, which is the control check input, after the timing at which the second clock shown in Fig. 5b rises due to a change in the monitoring input, as shown in Fig. d. After the transmission of the 4ch transmission signal, for example, the mode data of the 5ch transmission signal
Monitoring data polling by MD, its 5ch
The control check input must be returned as monitoring data RD when receiving the transmission signal of Signal processing was performed separately for the monitoring repeater and the monitoring repeater.

[Purpose of the invention] The present invention was made in view of the above-mentioned problems, and its purpose is to use the same repeater to transmit operation monitoring input of smoke prevention equipment and monitoring data consisting of control check input. The purpose of the present invention is to provide a repeater for a disaster prevention monitoring device that can transmit data.

[Disclosure of invention] The present invention will be explained below with reference to examples.

Embodiment FIG. 1 shows a circuit configuration diagram of a repeater according to an embodiment of the present invention, in which the repeater 3 is connected to the transmission signal processing section 4.
It is the same as the conventional structure in that it is composed of a control output section 5, and a monitoring input section 6, but the monitoring input section 6 includes a two-time sampling input latch circuit 8, a data selector section 10, and a high-speed sampling clock. The clock generating section 9a, a low-speed sampling clock generating section 9b, and a clock switching circuit 11 are constructed. The data selector unit 10 is designed to be able to switch inputs using a control output timing pulse generated from the control output unit 5 to determine the timing of the control output. A control check input for monitoring the control operation is taken in and outputted, and during a non-occurrence period, an operation monitoring input of the smoke prevention equipment 7 is taken in and outputted. The high-speed sampling clock generating section 9a has a clock generation cycle set so that a plurality of clocks can be generated during the transmission period of one channel of transmission signals, and the low-speed sampling clock generating section 9b has The clock generation cycle is made slower than the high speed clock mentioned above in consideration of chattering at the monitoring input contact. The clock switching circuit 11 is a circuit for switching the clock applied to the two-time sampling input latch circuit 8 between high speed and low speed, and the switching is performed by the above-mentioned control output timing pulse.

Then, the third
For example, as shown in Figure 2a,
The repeater 3, which has received the control data CD with the control polling mode set by the 5ch transmission signal, generates a control signal from the control output section 5, and also generates a control output timing pulse as shown in FIG. 2b. . When this control output timing pulse is generated, the clock applied to the twice sampling input latch circuit 8 is switched to a high-speed clock, and the monitoring input taken in by the data selector section 10 is switched to the second clock.
After switching to the control check input shown in Figure d, the sampling input latch circuit 8 latches twice at the rising edge of the second clock shown in Figure 2C, and the 6ch transmission is set to monitoring data polling mode. When accessed by the signal, the transmission signal processing unit 4 causes the control check data latched in the twice sampling input latch circuit 8 to be returned to the smoke prevention receiver 1 as monitoring data RD.

Here, the control output timing pulse is continuously output across 5ch and 6ch due to continuous access, so the high-speed clock is applied twice to the sampling input latch circuit 8 during that time, but access by the transmission signal of 6ch When the clock is completed, the clock is switched to a low-speed clock, and the input taken in by the data selector section 10 is switched to the smoke prevention equipment operation monitoring input. Therefore, the smoke prevention equipment operation monitoring input will be latched into the sampling input latch circuit 8 twice at the second rising edge of the low-speed clock, and the smoke prevention equipment will be activated by accessing the transmission signal after this latch timing. The operation monitoring input is sent back as monitoring data RD.

In this way, by returning the control check input using the transmission signal of the channel immediately after the channel in the control data polling mode, the timing for capturing the monitoring data RD of the control check input can be easily set.

[Effects of the invention] The present invention provides a repeater for a disaster prevention monitoring device configured as described above, in which the external load operation monitoring input and its own control check input are connected to the control output timing pulse when the control output section outputs the control signal. a data selector section that outputs a control check input during the period in which the control output timing pulse is generated;
A sampling input latch circuit that latches the output from the data selector section when a predetermined plurality of clocks are input, and a clock generation cycle that generates the predetermined plurality or more clocks within the transmission period of the transmission signal for one channel. The control output timing pulse switches between a high-speed clock that is set to be possible and a low-speed clock whose generation cycle is set to be larger than that of the high-speed clock, and inputs the signal to the sampling input latch circuit during the period in which the control output is generated. Since the clock is equipped with a switching means that changes the clock to a high-speed clock, it is possible to return two types of monitoring data, consisting of external load operation monitoring input and self-control check input, with the same circuit configuration. Since polling and monitoring data polling for its own control check can be performed continuously, it is easy to determine the timing for capturing monitoring data in the receiver, and the transmission program can be simplified.

[Brief explanation of the drawing]

Figure 1 is a circuit configuration diagram of an embodiment of the present invention;
The figure is a time chart for explaining the operation of the same as above, and Figure 3 is a configuration diagram of the entire system of a conventional disaster prevention monitoring device.
Fig. 4 is an explanatory diagram of the format of the transmission signal used in the above, Fig. 5 is a schematic configuration diagram of the same repeater, and Fig. 6 is a diagram explaining the format of the transmission signal used in the above.
The figure is a circuit configuration diagram of the monitoring input section same as above, and Fig. 7 is a time chart for explaining the operation of the same as above, 1 is a smoke prevention receiver, 2 is a transmission line, 3 is a repeater, and 4 is a transmission signal processing 5 is a control output section, 6 is a monitoring input section,
7 is a smoke prevention device, 8 is a two-time sampling input latch circuit, 9a is a high-speed sampling clock generator, 9b is a low-speed sampling clock generator, 1
0 is a data selector section, 11 is a clock switching circuit, AD is address data, MD is mode data, CD is control data, and RD is monitoring data.

Claims (1)

[Scope of utility model registration request] When the address data of the transmission signal sent by time division multiplex transmission from the receiver via the transmission path matches its own unique address, it receives control data based on the mode data or returns monitoring data to the receiver side. a transmission signal processing section that generates a control signal to control an external load such as smoke prevention equipment based on the control data taken in by the transmission signal processing section, and a control output section that generates a control signal to control an external load such as smoke prevention equipment based on the control data taken in by the transmission signal processing section; In a repeater of a disaster prevention monitoring device, which is equipped with a monitoring input section that takes in the monitoring input of the controller and outputs it as monitoring data to the transmission signal processing section, the external load operation monitoring input and its own control check input are connected to the control output section. A data selector section that outputs a control check input during the generation period of the control output timing pulse, which is switched by a control output timing pulse when a control signal is output, and an output from the data selector section that latches when a plurality of predetermined clocks are input. A sampling input latch circuit, a high-speed clock whose clock generation period is set to be able to generate the predetermined plurality of clocks or more within the transmission period of the transmission signal for one channel, and a high-speed clock whose clock generation period is set to be able to generate the above-mentioned plurality of clocks or more within the transmission period of the transmission signal for one channel; The disaster prevention device is characterized by comprising switching means for switching between a low-speed clock set larger than the generation cycle and a high-speed clock by the control output timing pulse and inputting the clock to the sampling input latch circuit during the generation period of the control output. Monitoring equipment repeater.