JPS63501747A - A device for remotely monitoring the presence within close range of a moving object, such as an animal or person - Google Patents

Abstract

A device for the remote surveyance of a moving object, an animal or a human being comprises, on the object, the animal or the human being monitored, a portable transmitter (1) including an RF oscillator (6) and means (8, 9) for chopping the output RF carrier from the oscillator (6) into a train of amplitude modulated signals forming a coded signal of identification of the transmitter holder, and also comprises a remote receiver housed into a portable casing (2). In order to facilitate the localization of the transmitter holder or carrier, the receiver comprises only a whip antenna (5) which is manually orientable in all directions and the receiver circuit comprises a decoder (28) at the input of which is applied the received coded signal, means (30, 31, 33) producing a sound signal are connected at the output of the decoder and means (32, 39-43) producing a variable light signal are connected to the output of the decoder (28) to give a visual indication varying as a function of the direction and the distance of the transmitter (1).

Description

[Detailed description of the invention] The present invention is useful for remotely monitoring the presence of moving objects, such as animals or people, within close range. It relates to a device for

Livestock frequently wander away from their sheds, i.e. at considerable distances from their normal sheds. It is known that it can become addictive. Owners of these livestock spend a lot of time I have no choice but to spend a lot of time looking for it, and sometimes I can't find it.

Additionally, similar issues arise when monitoring children who are likely to be kidnapped or vehicles that are likely to be stolen. Occurs regarding.

Devices ensuring such remote monitoring are already known. these devices (described in U.S. Pat. No. 4,528,566) This transmitter must be kept in the possession of a large or animal to be monitored. This send The machine consists of a radio frequency (RF) oscillator, and the carrier wave of this RF oscillator is It is modulated along with a coded signal that identifies the person in possession of the transmitter. like this The RF multiplied signal generated by the The signal is received at a distance by a receiving antenna connected to a data receiver. this In the known device, the receiving antenna section is on the one hand directly connected to the input of the RF amplifier. It consists of a whip antenna connected to the It is also connected to the input of the width gauge, so that it can be oriented approximately vertically to determine its direction. It consists of a half-wave resonant loop antenna. In addition, the goniometer receiver is RF multiplied by signal, the local oscillator, and the output signal of the low frequency amplifier that feeds the loudspeaker. It also consists of a combination.

Such known devices have some drawbacks that make them inconvenient to use. In some cases, this known device is relatively heavy and obtrusive, making it difficult to determine direction. Place the device's casing in a perpendicular position to the antenna in a circular loop so that An approximate location must be provided and the approximate location must be determined by the voice of the transmitter owner. the location of the person and/or animal, especially the location of the person and/or animal. It can't be close enough to be recognized. In addition, each transmission of a large number of holders All RF multiplied signals with the same carrier generated by the receiver at the same time are are received and superimposed, resulting in a low frequency signal that is no longer easily visible. It is difficult to clearly distinguish between signals transmitted by transmitters of multiple owners. I can't.

The present invention overcomes this problem with monitoring devices by means of a very easy to use method. The purpose is to This means is used for things that move, i.e. It is easier to locate a given animal or person from the herd, and , that is, the distance from the moving object to the animal or person being monitored is also determined. This makes it easy to accurately confirm the direction in which the image is moving.

For this purpose, a small transmitter consisting of an RF oscillator and an output signal from the RF oscillator are used. The transmitter transmits a series of RF signals that form the same coded signal as the owner of the transmitter. means for modulating the amplitude modulated signal into an amplitude modulated signal and for transmitting the coded signal. The antenna should be attached to a small object, such as an animal or person, that should be monitored. The remote receiver housed in the casing and the signals to be received sent from the small transmitter. Receiving antenna for receiving encoded signals and the location of the owner of the small transmitter and a means for producing a signal to indicate the direction in which the In a device for remotely monitoring a moving object such as a person or a person, a remote receiver is It has a single whip antenna that can be manually oriented in all directions, making it ideal for remote receivers. The circuit comprises a decoder having an input to which the received coded signal is applied; It operates only when the encoded signal is recognized as valid by the decoder. means for generating an audio signal connected to the output of the decoder so as to be activated; of the decoder to give a visual indication that changes depending on the direction and distance of the small transmitter. and means for generating a variable optical signal, connected to the output section.

One embodiment of the present invention will be described below with reference to the accompanying drawings, without being limited to this example. It will be done.

FIG. 1 is a diagram showing the main parts of a remote monitoring device according to the present invention.

FIG. 2 is a block diagram of the remote monitoring device.

FIG. 3 is a circuit diagram of an embodiment of a small transmitter.

FIG. 4 is a circuit diagram of one embodiment of a remote receiver.

The remote monitoring device according to the invention (the main part of which is shown in FIG. 1) is a moving device. , i.e. a transmitter worn by a large or animal, and a little from this transmitter It consists of a receiving section placed separately. The transmitter 1 may be configured in any suitable manner, e.g. worn by storing it in a collar 3 or presslet attached to the animal be able to. Transmitter 1 is a moving object, i.e. a large or It has an antenna that sends a coded signal that identifies the animal. This coded The signal is a VHF signal, for example, a digital signal having a frequency of 72 megahertz (Mllz). This code consists of a VHFHF signal that is amplitude modulated by a tall code signal. The coded signal identifies the owner of the transmitter.

The goniometer receiver is housed in a casing 2 made of molded plastic material. It has a shape that makes it easy to hold in the hand. This goniometer receiver is Only one “whip” antenna is used to receive the signal transmitted from transmitter 1. have The goniometer receiver determines whether the holder of transmitter 1 has It makes it possible to confirm direction and distance.

As can be seen in FIG. It has a VHF oscillator that transmits a VHF carrier wave at a wave number. This signal is supplied Interrupted from time to time due to unrelated growth. The VHF oscillator 6 is connected to the final amplification stage 7. The output of this final amplification stage 7 is connected to the transmitting antenna 4. Additionally, send The machine 1 includes a sequential circuit 8 connected to an encoder 9. The sequential circuit 8 has, for example, seven pillars. Encoder a rectangular signal made up of rectangular voltage pulses that alternate at every interval. Give to 9. This rectangular voltage pulse is separated by similar 7 second gaps between which The rectangular voltage pulse voltage in the gap is zero. Encoder 9 encodes several bits I, e.g. For example, a 9-bit word is generated at the output of encoder 9. This word is transmitter 1 It uses a unique method to confirm the holder of the This confirmation signal is supplied to the final amplification stage 7. be provided.

Referring to Figure 3, it will be seen that this figure shows a circuit diagram of one embodiment of the transmitter. Karu. This transmitter is connected by a switch 11 to the two poles of the buffer 12. It has a stabilized power supply 10. This stabilized power supply 10 supplies direct current ( D, C9) Apply voltage +5 volts (V). Therefore, switch 11 is closed. As soon as the circuit 8 is activated, the sequential circuits 8 are connected and activated. The operation of sequential circuit 8 is terminated by resistor 1. 3, 14 and a bridge of capacitor 15. Furthermore, VH The F oscillator 6 is of the type of crystal oscillator 17 and has a transistor 18 . to The collector of transistor 18 is connected to another transistor 19 constituting an intermediate frequency amplification stage. The emitter of this transistor 19 is connected to the base of the final amplification stage 7. The bases of the transistors 210 and 210 are sequentially connected to each other. two transitions The emitters of transistors 19 and 21 are connected to the collector of transistor 22, which The base of transistor 22 is connected to the output of encoder 9. antenna 4 and the transistor 21 of the final amplification stage so as not to damage the transmitted signal. A filter network 22 is inserted.

The goniometer receiver has an RF amplifier 24 inside the casing 2 (FIG. 2). . A signal received by the antenna 5 is applied to the input section of this RF amplifier 24. , the output of this RF amplifier 24 is connected to the input of a mixer 25. This mixture Another input of the combiner is connected to a local oscillator 26.

The frequency of this local oscillator 26 is the frequency of the carrier wave of the signal transmitted by the transmitter 1. slightly different from the number. The frequency of this local oscillator is, for example, 71.545MHz. There may be. The output signal of mixer 25 is given to low frequency amplifier 27, and this low frequency The output of the wave amplifier 27 is connected to a decoder 28 . In addition, the receiver amplifies 29 and a sequential circuit 31. The input of the amplifier 29 is the output of the mixer 25. The input section of the sequential circuit 31 is connected to the output section of the decoder 28.

Amplifier 29 and sequential circuit 31 are connected to field indicator 32 and simultaneously Another output of the circuit 31 is a circuit for controlling an audible alarm or buzzer 30. It is connected to road 33.

The field indicator 32 is attached to the casing 2 as shown in FIG. Seven visible electroluminescent diodes (LEDs) 37, 38, 39, 40 , 41, 42, and 43 drive circuits. These electroluminescent diodes It is distributed forming a margin angle. That is, two red dionides 37, 38 is far away, and two yellow diodes 39, 40 follow them. , followed by green diodes 41 and 42, and finally green diode 43 at the angle placed at the apex. All components of the receiver are connected to a regulated power supply 34.

This regulated power supply 34 is connected to a battery 35 by a switch-on switch 36. The DC (D, C,) voltage + 5 volts supplied to various circuits is connected to its output section. Generates a torque (V).

The various circuits of the receiver 2 are shown in the detailed circuit diagram of FIG. 4, which does not correspond to a limited embodiment. Shown below.

Receiver 2 operates as follows. When switch 36 is closed, all circuits are energized. It is under pressure. This is true for field indicators consisting of the 237BG type. Two electroluminescent diodes 37 and 38 connected to the output part "8" of the motor 32 Indicated by lighting. In addition, the local oscillator 26 also operates to generate a signal with a frequency of 72MH2. As soon as the signal is received by the antenna 5, the components of the mixing circuit and the intermediate frequency circuit Reliably modulates to a low frequency signal. This modulated signal is sent to the low frequency amplifier 27. After being amplified, Motorola's MCI45028 type is applied to the input of a decoder 28 which may consist of: Then two cases occur obtain.

1) The modulated signal differs from the predetermined code to which the decoder 28 was tuned. It has a code of At that time, decoder 28 is inactive. Also, and The field indicator 32 is connected to the amplifier 29 (LM358 type amplifier). Even if the output signal of the mixer 25 is received after being amplified by The field input is shorted by the transistor 44 connected to the The indicator 32 is in a zero state, in which case the buzzer 30 is deactivated and there is no audio signal. It does not emit a signal, nor does it indicate the location of the holder of transmitter 1, but it does emit two red electric fields. Only the lighting of photodiodes 37, 38 indicates that the device is operating.

2) The modulated signal applied to the input of the decoder 28 has a predetermined code. has a code that matches. In this case, the decoder 28 changes the state of the output section. Then, the sequential circuit 31 is operated. This sequential circuit 31 has a duration of 200 milliseconds, for example. The buzzer 30 is controlled by sending a periodic signal such that the buzzer 30 is activated every time the buzzer 30 is activated. The signal is generated at the output of the sequential circuit 31 which is connected to the circuit 33 which is connected to the circuit 33. In addition, the transistor 44 is shut off, so that field indicator 32 is no longer in a closed circuit state. It will no longer be. This field indicator 32 is an analog signal applied to the input section. The analog signal coming from the mixer 25 via the signal and amplifier 29 may be processed. stomach. This field indicator varies from the illumination of an electroluminescent diode to the transmitter's In order to be able to ascertain the direction in which the holder is located and the distance away, The electroluminescent diodes 39 to 43 are controlled to be selectively turned on. If all This is confirmed if the electroluminescent diodes 39 to 43 light up and the buzzer 30 operates. If antenna 5 is oriented in the correct direction or transmitter 1 is too close, It means to do something. If only one green diode 43 at the vertex of the angle goes out If the buzzer 30 is working, then the direction the antenna 5 is pointing is quite good. However, the transmitters are approximately 200-400 meters away.

The three green diodes 41, 42, and 43 are off, and the yellow diode 39 , 40 are lit and the buzzer 30 is operating, this means that the antenna 5 is The direction is pretty good, but the transmitter is 500-1000 meters away. means that it is in

In this way, selectively lighting up the electroluminescent diodes 39 to 43 depending on the amplitude of the signal applied to the field indicator 320 input. This fee The field indicator 32 indicates that the received coded signal is detected by the decoder 28. It always operates only when it is deemed effective. If red diodes 37, 38 This indicates that the received modulated signal is contains a valid code, moves the antenna 5 and connects the d lights of diodes 39 to 43. By this we mean that we can look for the direction of the transmitter.

Of course, various variant embodiments of reception m2 are conceivable. In particular, the RF amplifier 24, Single integration that integrates mixer 25, local oscillator 26 and low frequency amplifier 27 You can use the circuit.

Electroluminescent diode display device is more accurate and more in energy consumption Can be replaced by economical liquid crystal display.

Decoder 28, sequential circuit 31, display control operation and operation procedure display (battery status configuration courses, etc.) can be integrated into the same circuit.

According to a variant embodiment, there is also a reliable connection between the moving object (transmitter) and the monitoring receiver. It is conceivable to add a receiver to the transmitter that continues to communicate with the transmitter. This wireless link The transmitter 1 can be operated automatically as a function of the programmed perimeter . Distance and direction are determined by distinguishing two factors, and these various The information is clearly displayed to the monitoring receiver.

In the case of a "transmitter held by a person," this transmitter 1 has a can be provided with a direct call knob, in which case the receiver will receive continuous monitoring It becomes a state. When the direct call knob operates, the receiver operates, and transmitter 1 operates as described above. They will be sent in order so that the investigation procedure will be similar to that which was carried out.

For more collective use (e.g. for windsurfers or mountaineering assistants) and of a single frequency band to enable more effective and especially faster intervention. A choice can be made.

This single frequency band corresponding to two separate words is transmitted and received in the same way @ 2 distinguishes these signals.

Although the monitoring device according to the invention is described with particular application to monitoring people, it is of course may be used for other purposes, especially for monitoring any moving objects that are likely to be stolen. I can do it. In particular, vehicles such as trunks, motorcycles, etc. or moored vessels are These may be used for remote monitoring to prevent theft. can.

Deaf International examination failure ANNEX To’rH = INTERNAT 0NAj, 5ZARC)!　 REFORT 0N INTERNATIONAI, APPLICATION No, PCT/E’RE16100407 (SA)5336) υ5-A- 3366958Non@ CB-A-158615918103/81 Nonen-person-2541021 177087134NoneCB-A-207195623109/81 No n@US-A-3336530None

Claims (5)

[Claims] 1. A small transmitter (1) consisting of an RF oscillator (6) and an output from the RF oscillator (6). The transmitted RF carrier is the same coded transmitter as the owner of the small means (8, 9) for modulating the encoded signal into a series of modulated signals forming a signal; The antenna (4) for transmitting the signal transmitted by the animal or person to be monitored must be a remote receiver housed in a small casing (2); and a small transmitter (1). ) for receiving the coded signal to be received transmitted from (5) to indicate the direction in which the location of the owner of the small transmitter (1) is to be confirmed. a moving object, such as an animal or a person, having a means for generating a signal. In a device for physical monitoring, the remote receiver can be manually oriented in all directions. The circuit of the remote receiver has only one whip antenna (5) a decoder (28) having an input to which the received coded signal is applied; the encoded signal is recognized as valid by the decoder (28). an audio signal connected to the output of said decoder (28) so as to be activated only when means for generating signals (30, 31, 33) and the direction and distance of the small transmitter (1); connected to the output of the decoder (28) to provide a visual display that varies with distance. and means (32, 39 to 43) for generating a variable optical signal connected to each other. A device for remotely monitoring moving objects such as animals or people. 2. The output of the decoder (28) is a periodically operated audible alarm or block. connected to a sequential circuit (31) connected to a circuit (33) for controlling the For remotely monitoring a moving object such as an animal or a person according to claim 1. equipment. 3. The remote receiver comprises a plurality of electroluminescent diodes (37-43) with different colors. It consists of a field indicator (32) configured by a drive circuit, and the electric field The light emitting diodes (37-43) are connected to an RF amplifier (24) and a low frequency amplifier (27). and the output of the intermediate frequency mixing circuit (25) connected to the local oscillator (26). of the field indicator (32) connected to the power section via an amplifier (29). Claim 1 or 2, wherein the light is selectively turned on depending on the amplitude of the signal applied to the input section. is a device for remotely monitoring a moving object such as an animal or person as described in paragraph 2. . 4. The field indicator (32) indicates the received coded signal. If the code is not recognized as valid by the decoder (28), the circuit is closed; the decoder (2) to inactivate the field indicator (32); 8) connected to the switch transistor (44) connected to the output part of Devices for remotely monitoring moving objects such as animals or people as described in Section 3 . 5. The electroluminescent diodes (37-43) are visible on the surface of the casing (2). These electroluminescent diodes are distributed in an angular manner. , the two red diodes (37, 38) are farthest apart, and the two yellow diodes (37, 38) odes (39,40) follow, followed by two green diodes (41,42). Finally, a green diode (5) is located at the apex of the angle, and the antenna ( 5) is facing the correct direction and said small transmitter (1) is very close. Only the yellow diode and the green diode (39-43) are lit. Remotely monitoring moving objects such as animals or people described in Sections 3 or 4. device for