JPH01298699A - Actuator for electric meadow fence - Google Patents

Abstract

PURPOSE: To reduce radio wave failure as well as efficiently supply pulses to a meadow fence by internally detecting the load of an energizing device so as to control pulse output from plural signal generating means via a control means. CONSTITUTION: A parameter corresponding to a load via a load detection wire 7 connected to a pulse shaping circuit 6 for forming an energizing device together with pulse generators 2, 3 formed by a transformer, etc., is internally detected by a control circuit. In response to this detection, the thyristor switches of the generators 2, 3 are controlled by a control circuit and one side output pulse out of generators 2, 3 or both output pulses are supplied to the circuit 6 so that pulse electric power applied to electric meadow fences may be controlled in response to the load. Accordingly, pulses may be efficiently supplied to the meadow fences and also a radio wave failure may be reduced by supplying adequate pulses in comparison with supply of excessive pulse.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a biasing device for energizing a conductive system, such as an electric rack.

[Conventional technology]

Conventionally, energizing devices for electric shelving units typically provide a single output pulse to the shelving unit regardless of the load on the shelving unit. Providing a single output pulse to the corral in this manner regardless of the load on the trellis often results in pulses being wasted when the load on the trellis is low.

Furthermore, the life of the biasing device that operates as described above in response to the load demands of the cattle rack is unnecessarily shortened.

It is not possible to directly measure the load on a transformer, and safety regulations generally require 1000 V of insulation between the primary and secondary sides of the transformer coil. Due to the nature of their operation, energizing devices can cause radio interference, and in countries where wireless communications are very popular, it is unacceptable to eliminate this source of interference. This radio wave interference usually occurs due to sudden changes in voltage.

[Problem to be solved by the invention]

An energizing device for an electric rack with varying pulses is known, for example, from US Pat. No. 2,981,854, in which high and low surge voltages are continuously and alternately applied to the rack. There is. However, this patent does not have an independent means of monitoring load demands. U.S. Pat. No. 0.3378694 monitors the load demand, but the monitoring means is not in the energizer, but by a detector called a tweeter, which detects the conductivity of the soil at the location where it is installed. It is up to you to decide. Therefore, this detector does not directly measure the load when the energizing device itself is operating.

An object of the present invention is to provide an excellent energizing device for an electric shelving rack that can solve the above-mentioned conventional problems, efficiently supply pulses to the electric shelving rack, and reduce radio wave interference. It is in.

[Means to solve the problem]

The energizing device for an electric shelving device of the present invention that achieves the above object has the following features:
An energizing device for energizing a conductive system such as an electric rack, the method of operating the energizing device comprises the steps of monitoring a load demand, and energizing an amount of electricity in accordance with this demand. The energizing device comprises two or more signal generating means 2.3 for supplying electricity from the power supply to the Makidana system, and control means for controlling the pulse output from these signal generating means, and monitors the load demand of said system. It is characterized in that the step for generating the signal is issued from within the energizing device, and that the signal generating means comprises a transformer.

The biasing device may include means for monitoring the load on the fence so that pulses are generated in response to instantaneous load demands.

The means for detecting the load on the rack may measure various load parameters such as temperature, light, current, or voltage in any part of the circuit.

The energizing device may also incorporate circuit means for reducing radio interference.

[Effect]

In the energizing device for an electric shelving rack of the present invention, the control device detects the load on the shelving rack, and the operation of the plurality of pulse generators connected to the electric shelving device is determined according to the detected load. Electricity is supplied to the electric rack according to the amount of electricity. Additionally, a resonance circuit installed in the pulse generator prevents radio wave interference.

〔Example〕

FIG. 1 is a block diagram of an embodiment of the energizing device for an electric livestock rack according to the present invention.

pulse generator 2.3 and these two pulse generators 2.3
a control circuit 4 connected to the pulse generators 2 and 3;
The output terminal of the waveform shaper 6 is connected to the power supply terminal 5 of the electric fence, and the waveform shaper 6 and the control circuit 4 are connected to the load. They are connected by a detection line 7.

The charging circuit 1 supplies pulsed power to two separate pulse generators 2.3, respectively, and these two pulse generators 2.
．． 3 are both controlled in operation by a control circuit 4. The outputs of the pulse generators 2 and 3 are supplied via a waveform shaper 6 to a power terminal 5 of the electric rack.

For example, if the load on the electric fence is light, the control circuit 4 detects this via the load detection line 7 and controls one or both of the pulse generators 2.3 to match the instantaneous load on the electric fence. Works to start accordingly. Although two pulse generators are shown in Figure 1, the number of pulse generators is not limited to two, and the number of pulse generators with different capacities can be varied. The control circuit may adjust the outputs of these pulse generators in stages according to the load condition of the electric cattle rack. One way to achieve the control described above is to keep one pulse generator running at all times, but this is not a requirement.

The control circuit 4 may include switching means similar to the switching means described in New Sealant Patent No. 185,174.

Further, the energizing device for this electric livestock shelf may be of an alternating current type or a battery-driven type.

2 shows a specific example of the circuit configuration of the device shown in FIG. 1. In FIG. 0, 01. D2,03 is a diode,
C1, C2, C3 are capacitors, 5CR2, 5CR2 are thyristors such as semiconductor switches, 1 is an inductor, and T1.72 is an independent transformer that performs the stepwise operation described above. In this figure, the diode DI,
Capacitor C1, transformer T1 and Cyrisk 5CR
I constitutes the pulse generator 2 in FIG. 1, and the diodes D2 . Capacitor C2, transformer T2 and thyristor 5CR2 constitute pulse generator 3 in FIG.

When the load on the electric rack is normal, the detection line S detects the load and detects the negative amplitude of the primary side of the transformer T1.

When this negative amplitude falls below a preset reference value, the pulse generator 2 is activated by firing the thyristor 5CR2. Two pulse generators are then responsive to the load.

On the other hand, when the load is extremely light or heavy, the detection line S
detects that the voltage exceeds the reference value, and as a result, the pulse generator 2 is not activated because the Cyrisk 5CR2 is not turned on.

The load on the electric rack can actually be detected in two ways. One way to detect the load on an electric rack is to detect the current or voltage in the primary or secondary windings of the transformer; another way is to detect the current or voltage in the transformer's primary or secondary winding; It is to monitor the element temperature or the temperature of the air gap. When it is detected that either the temperature or the voltage is below the reference value, the thyristor 5C
R2 is fired, thereby achieving the required pulsing stage.

The transformer TI constitutes a resonant circuit with the inductor 1 and the capacitor C3 inserted on the primary side of the transformer T1, and reduces radio wave interference.

The resonant circuit of the transformer slows down the discharge time of the capacitor C3, and as a result, radio wave interference due to voltage characteristics occurring between the output terminals of the transformer is reduced.

FIG. 3 shows a detailed circuit of the electric shelf energizing device of the present invention, and the symbols attached to the parts surrounded by broken lines in FIG. 3 are the same as the component symbols in FIG. 2. We are doing so.

Capacitors C1 and 05, diodes 01 and D5, Zener diode D3, and resistor R1 form a power supply circuit to the control circuit, and this circuit guarantees the supply of a constant voltage of 5.6 V DC.

Capacitor C1 suppresses RFI spike current from the power supply circuit to the AC source.

Further, capacitors C3 and C4 form part of the charging circuit.

Fuse TC interrupts the circuit in the event of a failure.

Coil L1, resistor R5, and triac Q1 are all connected in series, and a capacitor C6 is connected in parallel to this series-connected circuit. These components form a resonant circuit to suppress triac switching noise that causes radio interference. This triac switching is performed by a circuit from the control circuit.

The control circuit is a custom-manufactured gate array;
The details are believed to be very complex and are therefore not included in this specification.

A thermistor RTI is attached to this control circuit, and this thermistor RTI detects the internal temperature of the energizing device. - Once the predetermined temperature is reached, 5CR in FIG.
Q3, which is the same as 2, becomes inactive, resulting in the control pulses ceasing to be generated.

The diodes D1 to D5 of FIG. 2 have their counterparts in FIG. The table below shows the comparison.

Figure 2 Figure 3 Di D4. D5 D2 D6. D7 D3 QI D4 058~D61 D5 D50~D57 The load detection line S in Fig. 2 is 82 and 8 in Fig. 3.
3.

Capacitor C1 in FIG. 2 is capacitor C9 in FIG. 3, and capacitor C2 in FIG.
In the figure, it is equal to capacitor CIO and capacitor C14.

The transformers are numbered the same in FIGS. 2 and 3.

In the resonant circuit in FIG. 2, the coil LL is represented by 2 in FIG. 3, and the capacitor C3 is represented by the capacitor C15.
and C16.

Further, 5CRI and 5CR2 in FIG. 2 are represented by 02 and 03 in FIG. 3, respectively.

The pulse generation step can also be achieved by controlling the charging of capacitor CI or C2.

Detection of the load on the electric rack is also carried out by measuring the output voltage or by inserting a light sensor, such as a light emitting diode, into the control circuit.

〔Effect of the invention〕

According to the biasing device for an electric shelving shelf of the present invention, since the load of the biasing device is measured inside the biasing device, it is possible to prevent unrepresentative feelers from being provided on the ground. The shelving rack is energized according to the load, so that unnecessary waste in the energizing device can be avoided. Furthermore, since each pulse generator is equipped with a transformer, more power can be provided when the electric shelving system needs it.

Radio interference can also be prevented by adopting means to reduce radio interference.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the energizing device for an electric shelving shelf of the present invention, and FIG. FIG. 3 is a circuit diagram showing the entire circuit configuration of the energizing device for an electric shelf according to the present invention. 1... Charging circuit, 2, 3... Pulse generator, 4...
- Control circuit, 5...Electric rack shelf terminal, 6...Waveform shaping circuit, 7, S...Load detection line.

Claims (1)

[Claims] 1. An energizing device for energizing a conductive system such as an electric rack, the method of operating this energizing device includes the steps of monitoring a load request and adjusting the amount according to this request. The energizing device includes two or more signal generating means (2) and (3) for supplying electricity from the power source to the Makidana system, and a control for controlling pulse output from these signal generating means. and wherein the step for monitoring the load demand of the system is issued from within the energizing device, and the signal generating means comprises a transformer. 2. An energizing device according to claim 1, including means for monitoring a load parameter of the shelving rack so that a pulse is output in response to the instantaneous load demand indicated by this parameter. 3. The energizing device for an electric shelving cabinet according to claim 1 or 2, wherein the means for monitoring the load of the system includes a load parameter of a component in the energizing device or a temperature of the free space. Including monitoring. 4. A biasing device for an electric shelving shelf according to claim 3,
The temperature monitoring means is realized by a temperature sensor (RTI) in the control circuit of the activation device. 5. The energizing device for an electric shelving rack according to any one of claims 1 to 4, wherein the means for detecting the load on the shelving rack is on either the primary side or the secondary side of the transformer. This is achieved by sensing the current or voltage load parameters on the side. 6. The energizing device for an electric livestock rack according to any one of claims 1 to 5, wherein the means for detecting the load on the livestock shelf is determined by measuring a load parameter of the output voltage. 7. The energizing device for an electric shelving rack according to any one of claims 1 to 6, wherein the load on the shelving rack is detected by an optical sensor such as a light emitting diode inserted into the control circuit. thing. 8. The electric shelving device energizing device according to any one of claims 1 to 7, wherein the pulse is generated by an SCR that is fired when any of the detected load parameters exceeds a predetermined value. what is done. 9. The electric shelf energizing device according to any one of claims 1 to 8, wherein pulse generation is performed by controlling charging of a capacitor. 10. The electric shelf energizing device according to any one of claims 1 to 9, wherein means for reducing high frequency interference is incorporated in the power supply circuit. 11. The energizing device for the electric shelving device is depicted in the accompanying drawings and in the foregoing description.