JPH0420515B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic transmission type observation device used for telemetering.

Conventionally, this type of device includes rainfall observation devices installed in areas with concentrated heavy rain, rivers with rapid water level changes, and water level observation devices installed in dams. When transmitting event data from these devices, the rainfall observation device transmits the received rainfall data when a rainfall signal from the rain gauge is detected, that is, when the event changes, and the water level observation device transmits the received rainfall data using a timer circuit. Water level data was sent at time intervals.

Therefore, with a device such as a rainfall observation device that transmits rainfall data only based on event changes, if no rainfall data is sent for a long period of time, it is impossible to determine whether the device is malfunctioning or whether no event change has occurred. There was a drawback.

In addition, in devices such as water level observation devices that transmit water level data at fixed time intervals using a timer circuit, if the timer circuit's activation time interval is long, changes in the water level cannot be known when it should be known, so the timer circuit Generally, there is a tendency to shorten the activation interval, which has the drawback of increasing the number of transmissions and increasing the power consumption of the device.

The present invention was made in order to eliminate the above-mentioned drawbacks of the conventional technology, and an object of the present invention is to provide a new automatic transmission type observation device that uses both the transmission of event data based on event changes and the transmission of event data based on the timer time of a timer circuit. It is something to do.

The present invention uses a timer circuit that alternately switches between a long time mode in which the timer time is long and a short time mode in which the timer time is short. While transmitting the event data directly received, the timer time is switched to short-time mode, and even if no change in the event is detected, the event data at that point is transmitted by the activation signal from the timer circuit, and
If the timer time is switched to the short-time mode and a change in event is detected while the timer is in the short-time mode, the event data received every time the event changes is stored and activated by the activation signal from the timer circuit. The above objective is achieved by transmitting the event data that has been detected and switching the timer time again to short-time mode, and if no change in the event is detected, no event data is transmitted and the timer time is switched to long-time mode. It is something.

The present invention will be explained below with reference to the drawings.

FIG. 1 shows a block diagram of an embodiment according to the present invention. In FIG. A main control circuit that is activated by a activation signal and controls the transmission of received event data and switches the operation mode of the timer circuit 3. 3 is a long-time mode in which the activation interval is a long time, such as 1 hour, 3 hours, or 6 hours. and a timer circuit that can alternately switch between two short-time mode startup intervals, such as 5 minutes and 10 minutes, and 4 is a timer circuit that transmits event data to the transmission line OL under the control of the main control circuit 2 This is a transmitting circuit that transmits data.

The operation of the automatic transmission type observation device configured in this way will be described next.

First, when the device is in its initial state, that is, when power is applied, the timer circuit 3 is set to a long-time mode.

(b) If the event change detection circuit 1 detects an event signal from the input line IL during the period when the timer circuit 3 is in the long time mode, the received event data is immediately transmitted by the main control circuit 2. The timer switching signal is sent from the circuit 4 to the transmission line OL and the timer switching signal is sent from the main control circuit 2 to the timer circuit 3.
The timer time of the timer circuit 3 is switched from the long time mode to the short time mode.

(b) If the event change detection circuit 1 does not detect an event signal from the input line IL while the timer time of the timer circuit 3 is in the long-time mode,
A start signal is sent from the timer circuit 3 to the main control circuit 2, event data at that point is sent from the transmission circuit 4 to the transmission line OL, and a timer switching signal is sent from the main control circuit 2 to the timer circuit 3.
The timer time of the timer circuit 3 is switched from the long time mode to the short time mode.

(c) If the event change detection circuit 1 detects an event signal from the input line IL during the period when the timer time of the timer circuit 3 is in the short time mode, the received event data is sequentially stored in the main control circuit 2. ,
This operation continues until the start signal is output from the timer circuit 3. When the start signal is given to the main control signal 2 from the timer circuit 3, the main control circuit 2 sends the stored event data all at once to the transmission circuit 4.
to the transmission line OL.

However, in this case, the timer time is switched to the short time mode again.

(d) If the event change detection circuit 1 does not detect an event signal from the input line IL while the timer time of the timer circuit 3 is in the short-time mode, a start signal is sent from the timer circuit 3 to the main control circuit 2. Even if given, the main control circuit 2 does not send out event data. The timer circuit then switches from the short time mode to the long time mode.

As an automatic transmission type observation device, if a change in an event occurs, it can be detected directly and event data can be transmitted in a timely and appropriate manner.In addition, since this device is generally installed in an uninhabited area, maintenance management is required. It is hoped that it will be easy, and especially that it will consume less power.

As mentioned above, the automatic transmission type observation device of the present invention manages its operation using two timer times that are alternately switched between long-time mode and short-time mode, and transmits event data depending on an event change and when using a timer. In particular, if event changes occur frequently during short-time mode, event data during this period will be sent all at once. If not, the event data is sent only by starting the timer in the long-time mode, so that the power consumption required for sending the event data can be kept to the minimum necessary.

FIG. 2 shows a block diagram when the automatic transmission type observation device according to the present invention shown in FIG. 1 is implemented in a rainfall observation device. The configuration is the same as that in FIG. 1 except that the detection circuit 1A is used, and the same parts as in FIG. 1 are denoted by the same reference numerals and detailed explanation will be omitted.

The third is a timing chart showing the operation of the rainfall observation device shown in FIG. 2. The operation of the rainfall observation device will be explained below based on FIG. 3.

(1) At time A, power is applied to the device, and the timer circuit 3 is set to a long-time mode in which the activation interval T2 is, for example, 6 hours.

(2) When a rainfall signal is input to the rainfall detection circuit 1A from a rain gauge (not shown) via the input line IL at time B, the main control circuit 2 is activated by the activation signal from the rainfall detection circuit 1A, and this activation The main control circuit 2, which has received the rainfall data following the signal, transmits the rainfall data received from the transmission circuit 4 to the transmission line OL.
Send to.

In this case, when the main control circuit 2 transmits the rainfall amount data, it sends a switching signal to the timer circuit 3 to switch to the short-time mode having an activation interval T1 of, for example, 10 minutes from time point B to time point C.

(3) Since the rain signal is not input to the rain detection circuit 1A by the time point C after time T1 has passed since switching to the short-time mode at time B, the start signal is sent from the timer circuit 3 to the main control circuit 2 at time C. However, the main control circuit 2 switches the timer circuit 3 to the long-term mode without transmitting rainfall amount data.

(4) When a rainfall signal and rainfall amount data are input at time D during the long-time mode, the device performs the same operation as at time B, and the timer circuit 3 switches to the short-time mode. A rainfall signal is input at times E and F during this short time mode, and the rainfall data from the rainfall detection circuit 1A is stored in the main control circuit 2. At time G after time T1, a start signal is sent from the timer circuit 3 to the main control circuit 2, and as a result, the main control circuit 2 transmits the rainfall amount data, which is the sum of the increases in rainfall at times E and F, to the transmission circuit 2. and send it to the transmission line OL. In this case, since the device transmitted the rainfall amount data at time G, the activation interval of the timer circuit 3 continues in the short time mode.

(5) Next, since the rainfall signal is not input to the rainfall change detection circuit 1 during the time T1 from time G to time H, the operation of the timer circuit 3 at time H is as short as the operation at time C. Switches from time mode to long time mode.

(6) When a rain signal is not detected during the long-time mode period T2 from time H to time I, a start signal is sent from the timer circuit 3 to the main control circuit 2 at time I, and the main control circuit 2 transmits the accumulated rainfall amount data from the transmission circuit 4 to the transmission line OL, and also switches the timer circuit 3 from the long-time mode to the short-time mode.

(7) If no rainfall signal is input to the device during time T1 from time I to time K, the operation of the device at time K switches to long-term mode operation; Since the rainfall signal is input to the rainfall detection path 1A at time J between time K and time K, the operation of the device at time K is to send out the rainfall amount data at time J in the same way as at time G, and also to set the timer. Circuit 3 continues operation in the short-term mode again.

Thereafter, since the rain signal is not input to the rain detection circuit 1A during the time period T1 up to time L, at time L the device operates in the same manner as at time H and enters the standby state.

As explained above, the rainfall observation device sets the activation interval of the timer circuit 3 to the long-time mode to the limit that allows failure determination of the device when there is no rain, that is, unless a rainfall signal is input, and when there is rain, the timer circuit 3 is activated immediately. The activation interval of the timer circuit 3 is switched to short-time mode by transmitting rainfall data to Since the system is designed to transmit event changes due to rainfall, it is transmitted moment by moment, and even if there is no rain, rainfall data accumulated by the long-time mode timer is transmitted, so it is possible to detect the occurrence of an event and the normality of the equipment. It is possible to know the operation in a timely and appropriate manner.

FIG. 4 shows a block diagram when the automatic transmitter observation device according to the present invention shown in FIG. 1 is implemented in a water level observation device. Change detection circuit 1
The configuration is the same as that in FIG. 1 except that B is used, and the same parts as in FIG.

FIG. 5 is a timing chart showing the operation of the water level observation device shown in FIG. 4, and will be described below based on FIG.

(1) At time M, power is applied to the device and the activation interval T2 is set to a long-term mode, for example after three hours.

(2) When the water level rises above the reference water level at time N, a water level signal is input from a water level meter (not shown) to the water level change detection circuit 1B via the input line IL, and the main control circuit is activated by a start signal from the water level change detection circuit 1B. 2 is activated, and the main control circuit 2, which has received the water level data following the Kio activation signal, transmits the water level data received from the transmitting circuit 4 to the transmission line OL.

In this case, when the main control circuit 2 transmits the water level amount data, it sends a switching signal to the timer circuit 3 to switch the long-time mode to a short-time mode from time N to time O, having an activation interval T1 of, for example, 5 minutes.

(3) The water level start signal is detected by the water level change detection circuit 1B between the time N when the mode is switched to the short time mode and the time O.
Therefore, even though the activation signal from the timer circuit 3 is sent to the main control circuit 2 at time O, the main control circuit 2 switches the timer circuit 3 to the long-term mode without transmitting water level data.

(4) If water level data exceeding the reference water level is input at time P during this long-term mode, the device performs the same operation as at time N, and the timer circuit 3 switches to short-time mode. .

When water level data exceeding the reference water level is input at times Q and R during this short-time mode, these water level data are stored in the main control circuit 2. At time S after time T1, a start signal is sent from the timer circuit 3 to the main control circuit 2,
This causes the main control circuit 2 to control the timing Q or R.
The larger water level data of the water level data at is transmitted from the transmitting circuit 4 to the transmission line OL.
In this case, since the device transmitted the number digit data at time S, the timer circuit 3 connects the short time mode.

(5) Next, since the water level does not rise above the reference water level during the time T1 from time S to time T, the water level start signal is not input to the main control circuit 2, and the timer circuit 3 is activated at time T and at time O. The mode switches from the short-time mode to the long-time mode in the same way as in the operation of , but water level data is not transmitted.

(6) When the water level start signal is not output during the long-time mode period T2 from time T to time U, the start signal is sent from the timer circuit 3 to the main control circuit 2 at time U, and the main control circuit 2 transmits the water level amount data at that point from the transmitting circuit 4 to the transmission line OL, and also switches the timer circuit 3 from the long-time mode to the short-time mode.

(7) The water level rises above the reference water level at time V during the time T1 from time U to time W, and the water level start signal is output from the water level change detection circuit 1B, so the device operates at time W. transmits the water level data at time V in the same way as at time S, and the timer circuit 3 resumes operation in the short time mode.

Thereafter, since the water level does not exceed the reference water level during time T1 up to time point X, at time point X the device performs the same operation as time point T and enters the standby state.

In this way, when the water level is below the reference water level, it operates in long-term mode, and when the water level rises above the reference water level, it immediately transmits water level data, and while operating in short-time mode, the water level is below the reference water level. If the water level goes up and down frequently, the system sends the maximum value of the water level data during the short-time mode and continues the short-time mode to monitor changes in the water level. In addition to automatic transmission, it is possible to minimize the power consumption of the device.

As explained above, according to the present invention, when a change occurs in an event, the event data is automatically transmitted immediately, and when no change occurs, the regularly accumulated event data is automatically transmitted. Since the system is configured to obtain data, it is possible to observe and transmit changes in events in a timely and appropriate manner, making it easy to determine equipment failures, and reducing power consumption, making maintenance and operation easier. This has the effect of configuring an economical telemeter system.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing one embodiment of the present invention, Figs. 2 and 3 are block diagrams and timing charts of the case where the automatic transmission type observation device according to the present invention is implemented in a rainfall observation device, and Fig. 4. FIG. 5 is a block diagram and a timing chart of the case where the automatic transmission type observation device according to the present invention is implemented in a water level observation device. 1...Event change detection circuit, 1A...Rainfall detection circuit, 1B...Water level change detection circuit, 2...Main control circuit, 3...Timer circuit, 4...Transmission circuit, IL
...Input line, OL...Transmission line.

Claims (1)

[Claims] 1. an event change detection circuit; a main control circuit that is activated by an event change signal detected by the event change detection circuit and controls transmission of received event data;
A transmission circuit that transmits the event data to the transmission line under the transmission control of the main control circuit, and a long time mode in which the timer time that defines the transmission control timing of the event data to the transmission circuit is long and short. a timer circuit that alternately switches between a certain short-time mode and a certain short-time mode by a switching signal from the main control circuit; When detects an event change, the received event change data is transmitted by the main control circuit to the transmission line via the transmission circuit, and the timer time of the timer circuit is changed by a switching signal from the main control circuit. (b) If the event change detection circuit does not detect an event change while the timer time of the timer circuit is in the long time mode, In response to the activation signal, the event data at that point is transmitted to the transmission line via the transmission circuit, and the timer time of the timer circuit is changed from the long-time mode to the short-time mode by the switching signal from the main control circuit. (c) If the event change detection circuit detects an event change while the timer time of the timer circuit is in the short time mode, the event change data detected by the event change detection circuit is switched to the main The event change data stored in the control circuit is transmitted to the transmission line via the transmission circuit by the start signal from the timer circuit, but the timer time of the timer circuit is shortened again. (d) If the event change detection circuit does not detect an event change while the timer time of the timer circuit is in the short time mode, the start signal from the timer circuit is controlled by the main control. An automatic transmission type observation device characterized in that the main control circuit stops transmitting event data even when the circuit receives the event data, and also switches the timer time of the timer circuit from a short time mode to a long time mode.