JPS6264099A - Safety device for electric field fence - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is intended to solve problems in the power circuit of electric grazing fences used in ranches to separate grazing areas for livestock animals such as cows, pigs, and sheep. This relates to a safety device for electric pasture fences to prevent damage to humans and livestock in the event of an accident.

[Problems to be solved by conventional technology and invention]

Traditionally, electric pasture fences have replaced barbed wire pasture fences because they are more economical and allow livestock to control the animals more easily, but they are susceptible to electrical leakage due to contact with grass, etc. Because fences often come off due to a drop in pulse voltage, farmers and other users are increasingly seeking higher output power within the range that guarantees human safety. However, since the power supply device of an electric fencing device is a device composed of various semiconductors and other electrical components, there is a possibility that the absolute safety for humans will be exceeded due to some abnormality.

For example, if the pulse interval of an electric fence's power supply is abnormally shortened due to a circuit failure, a large load will be placed on the human heart, and if the person gets caught in the electric fence, it will be difficult to escape. There is a danger that

[Means to solve the problem]

Therefore, in order to further improve the safety of conventional electric fences, the present invention aims to eliminate the above-mentioned dangers caused by the shortening of the pulse interval, which is the most dangerous for humans. To provide a safety device for an electric fence capable of lowering the energy released in one pulse to a safe range when it is abnormally shortened, and cutting off the power of the electric fence within a predetermined time. It is.

〔Example〕

The principle embodiment of the present invention is shown in FIG. 1 below.

In general, the basic circuit configuration of the electric fence device 7 is as shown in FIG. The output adjustment circuit 6 is normally connected to the electric fence 10.

In the present invention, for example, a pulse detector A is attached to the input side transformer circuit 2, and the pulse interval is detected from a change in the current or voltage supplied to the rectifier circuit 3.

This pulse detector includes, for example, an output adjustment circuit 6 and an electric fence 1.
It is connected to safety device B inserted between 0-kichi. This safety device B is activated when the pulse detector sent from the pulse detector A is shorter than a predetermined value, and reduces the energy of the shock pulse electricity sent to the electric fence to a predetermined value or less, and then after a predetermined period of time. This is to cut off the power to the electric fence device.

The pulse detector A1 and safety device B may be installed anywhere on the circuit of the electric fencing device 7, and are not limited to the location shown in FIG. 1, as long as the above-mentioned functions are satisfied.

More specific examples of the present invention are shown below.

Figure 2 shows a safety device 8 that is attached to the outside of the electric fencing device 7.
This shows an example of this.

The pulse detector A detects the pulses of the electric fencing device 7 through the pulse detection section A1. The detected pulses are sent to the counter A2, and the basic time generating circuit A3, which counts the number of pulses, sends a signal to the counter A2 at fixed time intervals to clear the count value of the counter A2. Therefore, the number of pulses within the basic time is output from the counter A2 every predetermined time.

The number of pulses is sent to a comparator B1, and based on a predetermined reference value B2, if the number of pulses increases beyond the predetermined reference value, it means that the pulse interval has shortened, so the pulse output suppression circuit B3 and , starts the operation of the timer 84.

If the pulse interval returns to a predetermined reference value or more, the operation of the pulse output suppression circuit B3 and timer B4 is canceled;
If the condition below the reference value continues, the timer 84 operates the circuit breaker B5 after a predetermined period of time and turns off the electric fence device 7.

FIG. 3 shows another embodiment of the safety device 8 built into the electric fencing device 7.

This consists of a pulse detector A consisting of a pulse detector A1 and a comparator A4, a pulse output suppression circuit B3, a timer B4,
The pulse interval constituted by the safety device B consisting of the circuit breaker B5 is detected by the pulse detection section A1 and sent to the comparator A4. This comparator A4 connects the safety device B and activates the pulse output suppression circuit B3 when the pulse interval is less than a predetermined time. This output suppression circuit B3 is composed of a semiconductor, a capacitor, a resistor, etc., and the resistor includes a timer B4 and a circuit breaker B.
A temperature heater is installed that also functions as 5.
When the output suppression circuit B3 is continued to be used, the fuse is blown by the heat generated by the resistor within a predetermined period of time, for example, within three minutes, and the power supply itself is cut off.

In FIG. 3, the pulse detector A is placed between the rectifier circuit 3 and the output-side transformer circuit 5, but it is not limited to this and may be placed anywhere as long as pulses can be obtained. Similarly, safety device B can be connected anywhere as long as it can perform the specified function.

FIG. 4 shows a modified embodiment of the device of FIG.

This consists of a pulse detector A consisting of a pulse detector A1 and a comparator A4, a pulse output suppression circuit B3, and a timer B4.
, and a safety device B consisting of a circuit breaker B5.

The pulse interval is detected by the pulse detector AI and sent to the comparator A4. This comparator A4 connects the safety device B and activates the pulse output suppression circuit B3 when the pulse interval is less than a predetermined time. This output suppression circuit B3 operates on the output adjustment circuit 6 to attenuate the output energy below the rated value.

By the way, if the pulse interval is abnormally shortened due to some kind of circuit failure, abnormal current will continue to flow in the input side transformer circuit 2, rectifier circuit 3, circuit 4, etc., so resistors etc. Although it generates heat, the safety function of the present invention can be activated by installing a pre-calculated temperature heater there.

In other words, the safety device of the present invention does not need to be integrated in terms of circuitry, and can be installed separately to achieve its purpose comprehensively.

FIG. 5 shows another embodiment of the safety device 8 built into the electric fencing device 7, similar to FIG. 3. Pulse detection part A
1. A pulse detector A consisting of a comparison test distributor A5 and a second
Output adjustment circuit B6, timer 134, and circuit breaker B5
Consists of safety device B consisting of:

The pulse interval is detected by the pulse detector A1 and sent to the comparison/test distributor A5. This distributor A5 has a function of cutting off the output adjustment circuit 6 that has been used so far and connecting the second output adjustment circuit B6 when the pulse interval is less than a predetermined value. When the second output adjustment circuit B6 starts operating, the timer B4 starts operating, and the circuit breaker B5 shuts off the power within a predetermined time. Here again, safety device B can be made relatively easily by using the aforementioned temperature fuse.

Although the output adjustment circuit 6 and the second output adjustment circuit B6 are shown separately in the figure, it is also possible to share a part of them.

As described above, the present invention can be used in conjunction with electric fencing equipment that has already been used in the past, as shown in Fig. 2, and can also be used in conjunction with electric fencing equipment, as shown in Figs. 3, 4, and 5. It is also possible to incorporate the garbage into the fence.

It should be noted that the embodiments are not limited to the above, and it goes without saying that many other examples can be considered.However, in order to make the present invention function effectively and eliminate danger, the following are the results of numerous test data. We believe that the values shown in are appropriate. In other words, if the pulse interval of the electric fencing device becomes less than 0.75 seconds, the energy of one pulse will be reduced to less than 2.5 g, and if this condition continues, the power to the electric fencing device will be cut off within 3 minutes. It is believed that a safety device designed to do so would be sufficient to accomplish the objectives of the present invention.

〔Effect of the invention〕

According to the present invention, it is now possible to safely use a high-power electric fencing machine, and the significant effects of being able to fully exhibit the excellent characteristics inherent to the electric fencing machine are significant. In other words,
This was a dilemma for conventional electric fences. It can be said that the present invention has made it possible to reconcile the contradictory issues of high output and safety.

For example, electric pasture fences can now be used on large-scale ranches such as public ranches, which were previously considered inappropriate. Specifically, this has the following benefits.

The first is that facility costs can be reduced by 30 to 50% compared to conventional pasture fence systems, and the second is that livestock can be easily controlled, resulting in better grassland management and improved livestock productivity.

As described above, the present invention improves the safety of high-power electric fences and allows anyone to use electric fences with peace of mind.
This means that large economic benefits can be obtained, and the effects of the present invention are extremely large.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing the principle embodiment of the present invention, and FIG.
The figure is a schematic configuration diagram showing a specific example of attaching the safety device of the present invention to the outside of an electric fence, and Figures 3, 4, and 5 show the safety device of the present invention being attached to an electric fence. FIG. 3 is a schematic configuration diagram showing another specific example of the built-in device. DESCRIPTION OF SYMBOLS 1... Power supply, 2... Input side transformation circuit, 3... Rectifier circuit, 4... Trigger circuit, 5... Output side transformation circuit, 6... Output adjustment circuit, 7... Electric fence equipment, 8...
・Safety device, 10...Electric fence, A...Pulse detector of safety device 8, A1...Pulse detection unit, A2...Counter, A3
...Basic time generation circuit, A4...Comparison tester, A5
... Comparison test distributor, B ... Safety device of safety device 8, B1 ... Comparator, B2 ...
...Reference value, B3...Pulse output suppression circuit, B4...
・Timer, B53. circuit breaker.

Claims (1)

[Claims] A pulse detection means installed in the power supply circuit of the electric fence, and when the pulse interval output from this pulse detector is shortened to a predetermined value or less, the energy released in one pulse is reduced so as to fall within a safe range. , and a safety means for cutting off the power to the electric fence within a predetermined time.