KR101827142B1 - Safety system for elevating work platform having wireless telecommunication system for guardrail sensor - Google Patents

Abstract

The present invention relates to a safety system for an elevating work platform using a helmet for an elevating work platform and, more particularly, to a safety system for an elevating work platform which includes a controller driving an actuator of an elevator elevating a work platform and a signal transmitting system transmitting a signal to the controller from a detector provided in the work platform. The signal transmitting system includes a wireless communication system, wherein the wireless communication system has one or more transmitters installed in the detector and a receiver connected to the controller and receiving a wireless signal of the transmitter. The transmitter includes: a sensor having a contact sensor or a non-contact sensor, wherein the contact sensor detects an impact or a contact to output a sensor output with intensity corresponding to intensity of the impact or the contact, and the non-contact sensor detects a distance in a non-contact manner to output a sensor output with intensity corresponding to the distance; and a transmitting unit analogously and wirelessly transmitting a wireless signal with intensity corresponding to the intensity of the sensor output in accordance with a predetermined analog wireless parameter. The receiver includes: a receiving unit analogously and wirelessly receiving the wireless signal from the transmitting unit in accordance with the analog wireless parameter; and a signal unit outputting a one-moment hold signal and a falling signal to the controller based on the wireless signal effectively received by the receiving unit. Therefore, the present invention can prevent a sensor signal detecting occurrence of pressure accidents from missing by transmitting the sensor signal to a control unit through wireless communication.

Description

TECHNICAL FIELD [0001] The present invention relates to a safety system for a high altitude work station having a wireless communication system for a detector,

More particularly, the present invention relates to a safety system for a high-altitude work station equipped with a wireless communication system for a detector, and more particularly, The present invention relates to a security system for a high-altitude work station having a sensor wireless communication system for rapidly and accurately delivering detection intensity information to a sensor and for causing a high-altitude work platform corresponding to the sensor to stop or descend.

In general, a high work bench having an elevator 20 capable of raising and lowering a work table 10 on which a worker is mounted is known for high-level work. Typical examples of the elevator 20 include a scissor elevator and a boom elevator, but the present invention is not limited to this.

The work table 10 is provided with a sensor including a handrail sensor 12 for generating a signal in response to an impact or contact of a contact structure 11 such as a handrail which is in contact with an obstacle w, The signal of the sensor 12 is connected to a controller 22 on the ground by a cable (not shown). The controller 22 controls the actuator 23 so as to move the mechanism 24 of the elevator 20 up and down according to an operation signal of the operator through the operation unit 21 or a signal of the rail sensor 12. [ do.

In the following patent document, the distance to the obstacle is detected in a non-contact manner through the obstacle distance detector 22 provided on the mounting bar 20 on the railing 16a of the basket 16 of the elevator platform 10, 100 stops the operation of the elevating operation portion 14 provided on the elevating portion 12 of the elevating platform 10.

Patent Publication No. 10-2009-0062778

The sensing signal of the distance sensor 22 of the basket 16 is transmitted to the lifting operation part 14 through the cable 10 through the operation control part 100 of the bogie part 12, There is a case where the cable is stuck and damaged between the basket 16 and the bogie 12 or an elevator such as a scissor lift. When the cable is damaged, the detection signal of the obstacle distance detector 22 can not be transmitted to the operation control unit 100, so that the operation of the elevation operation unit 14 can not be stopped, There is a problem.

In addition, since the cable moves physically as it ascends and descends, there is a problem in that it costs a cost to replace the cable that is periodically obsolete.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a sensor capable of preventing the omission of sensor signals from being transmitted by transmitting a signal of a sensor, And a safety system for a high-altitude work station having a wireless communication system for a high-altitude work station.

Another object of the present invention is to provide a safety system for a high-altitude work station equipped with a wireless communication system for a detector which does not incur the replacement cost of the old cable.

According to another aspect of the present invention, there is provided a safety system for a high work station having a wireless communication system for a sensor, comprising: a controller for driving an actuator of an elevator for elevating and lowering a work table; Wherein the signal transmission system comprises at least one transmitter installed in the sensor and a receiver coupled to the controller and receiving a radio signal of the transmitter, Wherein the transmitter senses a shock or a contact and outputs a sensor output of a strength corresponding to the impact or the contact strength or a contact sensor which senses a distance in a noncontact manner and outputs a sensor output of a strength corresponding to the distance the sensor and the sensor output comprising the output of non-contact type sensor According to a radio signal strength corresponding to the strength to a predetermined analog radio parameters it is done by a transmitter that transmits an analog radio, the receiver, the radio signal from the transmitter, for receiving analog radio according to the analog radio parameter and a receiver and, characterized by, based on the radio signal validly received by the reception section, yirueojim including the signal portion of one end outputs a stop signal and a falling signal to the controller.

Here, the analog wireless parameter preferably includes a parameter related to at least one of a channel to be used for analog wireless communication, a pattern of a separable waveform or waveform, or modulation .

In addition, as the intensity of the sensor output increases, the transmission intensity of the radio signal of the transmitter increases, and as the transmission intensity of the radio signal of the transmitter increases, the reception strength of the radio signal of the receiver increases, It is preferable that the larger the reception strength is, the larger the amount of the descent in the signal of the signal portion becomes.

The receiver may be configured to set the analog radio parameter if the distance between the transmitter and the receiver is within a predetermined distance and the transmitter is an unregistered transmitter determined according to the reception strength of the radio signal, It is preferable that a setting unit for registering with the receiver is further provided.

In the case of digitalization, a security system for a high-altitude work station having a controller for driving an actuator of an elevator for elevating and lowering a work table and a signal transmission system for transmitting a signal from the sensor provided in the work table to the controller, The system comprises a wireless communication system comprising at least one transmitter mounted on the sensor and a receiver coupled to the controller and receiving a radio signal of the transmitter, contact sensor that generates a sensor output of the intensity corresponding to the contact strength and, by detecting the distance without contact with the sensor made of a non-contact sensor that generates a sensor output of the intensity corresponding to the distance, corresponding to the strength of the sensor output A wireless signal including a digital strength value is transmitted to a predetermined < RTI ID = 0.0 > Depending on the hair of radio parameters is done by a transmitter for transmitting a digital radio, the receiver, and a receiver for receiving digital radio in accordance with the digital radio parameter to the radio signal from the transmitter, validly received by the receiving unit And a signal unit for temporarily outputting a stop signal and a down signal to the controller based on the radio signal.

Here, the digital wireless parameter preferably includes a parameter related to at least one of a channel to be used for digital wireless communication, a distinguishable protocol , or a modulation .

The higher the strength of the sensor output, the greater the digital strength value of the radio signal of the transmitter, and the greater the digital strength value of the radio signal of the transmitter, the greater the received digital strength value of the radio signal of the receiver. It is preferable that the larger the received digital strength value of the radio signal is, the larger the amount of descent in the down signal of the signal portion becomes.

And if the distance between the transmitter and the receiver is within a predetermined distance and the transmitter is an unregistered transmitter, the digital radio parameter is set according to a received digital strength value of the radio signal, And a setting unit for registering with the receiver.

According to the present invention, the signal of the sensor for detecting the occurrence of the crushing accident is transmitted to the control unit through the wireless communication instead of the cable, A safety system is provided.

Further, there is provided a safety system for a high-altitude work station equipped with a wireless communication system for a detector which does not incur the replacement cost of the old cable.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic explanatory diagram for explaining a situation of a high-altitude operation using a safety system for a high-altitude work station having a wireless communication system for a detector according to the present invention. FIG.
FIG. 2 is a block diagram of the present invention comprising (a) a conventional block without control by a detector, and (b) a receiver of the detector and a receiver of the controller.
3 is a flowchart for explaining the registration mode and the monitoring mode of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a safety system for a high-altitude work station having a wireless communication system for a detector according to the present invention will be described in detail with reference to the accompanying drawings. However, portions having the same function due to the same configuration are denoted by the same reference numerals even if they differ from each other, and detailed description thereof may be omitted. And a case in which the case is connected via an adapter or an intermediate member in the middle thereof. The hardware or software block performing a certain function may be implemented by being divided into two or more detailed blocks, or a plurality of blocks may be combined into one integrated block.

<Basic Configuration>

1, a safety system for a high work station having a wireless communication system for a detector according to the present invention comprises a controller 22 for driving an actuator 23 of an elevator 20 for elevating and lowering a work table 10, And a signal transmission system for transmitting a signal from the sensor provided in the controller (10) to the controller (22). The controller 22 may be manually operated by the operation unit 21. [ 2, the safety system includes at least one transmitter 40 installed in the detector and a receiver 50 connected to the controller 22 and receiving the radio signal of the transmitter 40 .

The transmitter (40) includes a sensor (41) and a transmitter (42) .

The sensor 41 may be a contact type sensor that senses an impact or a contact and outputs a sensor output of a strength corresponding to the impact or the contact strength or a contact type sensor that detects a distance and outputs a sensor output of a strength corresponding to the distance (For example, laser, ultrasonic) type sensor which is made of a non-contact type. The sensor 41 outputs a sensor output signal when the work table 10 is impacted or brought into contact with the obstacle w as shown in Fig.

In the sensor 41, the greater the intensity of the impact or contact, the greater the intensity of the sensor output. As such a sensor 41, a sensor of a type in which at least one of parameters such as a resistance R, an inductance L, and a capacitance C is changed by an impact or a contact, But is not limited thereto.

Particularly, the sensor 41 is configured to include a piezoelectric element for converting mechanical energy into electrical energy, and is a non-power-source type (passive type) in which electrical energy generated by deformation of the piezoelectric element due to impact or contact is output to the sensor output desirable. The non-power-source method is simple in structure, has no trouble, is light in weight, and does not require a battery, so that an operation error due to discharge does not occur.

However, the sensor 41 may be an electric-energy-type (active type) operated by a battery, and this method enables long-distance communication by a higher output signal.

The sensor 41 may be a noncontact (e.g., laser, ultrasonic) sensor that senses the distance in a noncontact manner and outputs a sensor output having a strength corresponding to the distance.

The transmitting unit 42 is a component for analog radio transmission of a radio signal having an intensity corresponding to the strength of the sensor output according to a predetermined analog radio parameter. Since the strength of the sensor output increases as the impact or contact strength increases, the transmission strength of the transmission section 42 also increases as the impact or contact strength increases. This is due to the characteristic of outputting the output signal proportional to the intensity (amplitude, size) of the input signal because it is an analog communication. That is, in the present invention, the analog input is directly output to the analog output without being converted to digital.

By employing the no conversion method, no data loss or delay time due to the conversion is generated. Therefore, rapid reaction is possible. In addition, there is no possibility that the conversion section fails and conversion error occurs or operation is disabled. As the input intensity increases, the output intensity becomes larger, so that the intensity information can be utilized at the downstream receiving end, the signal generating end, and further the control end.

The radio signal is transmitted by the transmitting unit 42 in accordance with a predetermined analog radio parameter. This radio signal is also received by the receiver 52 according to the analog radio parameter. That is, the protocol of the wireless communication is determined by the analog wireless parameter, and the wireless signal is transmitted only between the transmitting unit 42 and the receiving unit 52 whose protocol agrees with each other.

For example, when the detectors s1 and s2 are installed on the first elevated workbench and the detectors s3 and s4 are installed on the second elevated workbench, the wireless signal of the transmitter 42 is generated by the sensor output of the sensor 41 of the sensor s2 Only the elevator 20 of the first elevated work bench should be stopped or lowered by the receiving unit 52 of the first elevated work bench and there should be no influence on the second elevated work bench. To this end, there are provided, between the receiving section 52 of the first elevation workbench and the transmitting section 42 of the detectors s1 and s2, and between the receiving section 52 of the second elevated work bench and the transmitting section 42 of the detectors s3 and s4, The analog wireless communication must be established. That is, the parameters of the analog wireless communication must be set differently.

This analog radio parameter can then be used to distinguish one or more detectors assigned to any elevated workbench from those assigned to another elevated workbench. The assignment of the elevator workbench and the detector determines which elevator workbench will respond to the signal generated by the detector. That is, a concept similar to pairing in a digital signal or matching a broadcasting reception frequency of a television or a radio in an analog signal, and matching a communication channel of a radio is a concept.

The receiver 50 includes a receiving unit 52 and a signal unit 51 .

The receiving unit 52 is a component that analog-wirelessly receives the radio signal from the transmitting unit 42 in accordance with the analog radio parameter. As described above, each of the receiving units 52 is configured to perform wireless communication with at least one transmitting unit 42, and analog wireless parameters for the wireless communication are set. The receiving unit 52 waits for reception of the radio signal based on the set analog radio parameter.

Therefore, even if a radio signal is transmitted from the transmitting unit 42, if the analog radio parameters do not match, the receiving unit 52 can not effectively receive the radio signal, and only the radio signal using the analog radio parameter Check).

The signal unit 51 is a component that temporarily outputs a stop signal and a falling signal to the controller 22 based on the radio signal received by the receiving unit 52 effectively. Here, the determination of the validity can be determined, for example, by determining whether the difference between the input waveform tuned to the antenna of the receiver 52 and the reference waveform based on the analog radio parameter falls within a predetermined range, but is not limited thereto.

The one-stop signal is preferably a stop signal generated unconditionally immediately when the radio signal passes the check of the analog radio parameter. This is to prevent an accident from spreading, considering that there is a possibility that an accident has occurred somewhere in the worktable 10, apart from such a large and small size. Thus, as soon as the analog radio signal of the transmitter 40 is only acknowledged at the receiver 50 via the corresponding parameter without any data conversion and without any judgment of the condition, So that the safety effect can be greatly improved.

<Operation>

As shown in FIG. 3, the sensor 41 of the transmitter 40 mounted on the sensor senses an impact or a contact (S21) and generates a sensor output of a strength corresponding to the impact or contact The transmitter 40 generates an analog radio signal having an intensity corresponding to the intensity of the sensor output without performing any additional conversion or determination processing. At this time, the radio signal is analog-transmitted according to the analog radio parameter previously set and stored in the transmitter 40. [

On the other hand, the receiver 50 monitors the reception of the valid radio signal through the analog radio parameter previously set and stored. When the radio signal conforming to the analog radio parameter is detected (parameter check OK, S23) The stop signal is unconditionally output to the controller (S24) without performing conversion or judgment processing.

Therefore, since the transmission and reception of the radio signal to the sensor output are both processed by the analog radio signal, the time delay due to the AD conversion is eliminated, and quick response to the crushing accident becomes possible. In addition, as compared with the criticality of the squeeze accident such as the verification of the radio signal or the ascending status, the pause signal is outputted immediately when only the check of the analog radio parameters is performed without making any local judgment. It becomes possible.

<Analog wireless parameter>

Here, the analog wireless parameter preferably includes a parameter related to at least one of a channel to be used for analog wireless communication, a pattern of a separable waveform or waveform, or modulation .

The analog radio communication between the receiver 52 of the first elevated workbench and the transmitter 42 of the detectors s1 and s2 is made through the first channel and the analog radio communication between the receiver 52 of the second high workbench and the detectors s3 and s4 Since the radio signal of the sensor output of the sensor s2 is transmitted through the first channel by the transmitter 42 if the analog wireless communication between the transmitter 42 is set to be performed via the second channel, Only the receiving section 52 can be effectively received, and the receiving section 52 of the second high work bench can not receive. Therefore, the signal validity of the analog wireless communication can be set by the channel.

The analog radio communication between the receiver 52 of the first elevated workbench and the transmitter 42 of the detectors s1 and s2 comprises a first waveform (e.g., a sinusoidal wave), and the receiver 52 of the second elevated workbench and the detector s3 and the transmission section 42 of s4 is set to be composed of the second waveform (for example, triangular wave), the radio signal of the sensor output of the sensor s2 is transmitted as the first waveform by the transmission section 42, Only the receiving section 52 of the first elevated workbench is receivable and the receiving section 52 of the second elevated workbench is not receivable (or invalid). Therefore, the signal validity of the analog wireless communication can be controlled by the waveform. However, such a waveform may be a pattern of a waveform in which a plurality of waveforms are sequentially arranged in a predetermined order, not limited to a single waveform.

For example, the analog radio communication between the receiver 52 of the first elevated workbench and the transmitter 42 of the detectors s1 and s2 is first modulation (e.g., at an FM frequency of 832 MHz) If the analog radio communication between the transmitters 42 of the detectors s3 and s4 is set to be performed with the second modulation (e.g., AM frequency 1543 KHz), the radio signal of the sensor output of the sensor s2 is transmitted by the transmitter 42 to the first modulation Only the receiving section 52 of the first elevated workbench can receive and demodulate it, and the receiving section 52 of the second elevated workbench can not demodulate (or is invalid) even if it is received. Therefore, the signal validity of the analog wireless communication can be controlled by modulation.

As described above, the radio communication between the receiving section 52 of a high work platform and the transmitting section 42 of one or more detectors assigned to the receiving section 52 is performed by the receiving section 52 of another high work bench, And the transmitter 42 of the detector.

However, in the above description, all of the transmitting units 42 of the detectors corresponding to (paired with) the receiving unit 52 of one work station are all set to the same analog wireless parameters. However, the present invention is not limited to this, The transmitter 42 of the sensor corresponding to the receiving unit 52 of one high work bench is provided with different analog wireless parameters under the assumption that it is distinguished from the transmitter 42 of the sensor corresponding to the receiver 52 of the other high work platform It is not excluded that it is set.

For example, the analog radio communication between the receiver 52 of the first elevated workbench and the transmitter 42 of the detector s1 comprises a first parameter (e.g., first channel, triangular wave, FM frequency 832 MHz) (For example, a second channel, a square wave, and an AM frequency of 1832 KHz) between the receiver 52 of the second high work bench and the transmitter s2 of the detector s2 The analog wireless communication between the receiving unit 52 of the second high work bench and the transmitting unit 42 of the sensor s4 is composed of a third parameter (e.g., a first channel, a sine wave) Parameter (e.g., a third channel, a sine wave). In this case, when the first or second parameter is transmitted, only the receiving section 52 of the first elevated workbench can be effectively received, so that the receiving section 52 of the second elevated workbench is not affected and the third or fourth Only the receiving unit 52 of the second high work bench can effectively receive the parameter, so that it does not affect the receiving unit 52 of the first high work bench.

<Amount of descent according to sensor output analog strength>

On the other hand, as the intensity of the sensor output increases, the transmission intensity of the radio signal of the transmission section 42 increases and the reception intensity of the radio signal of the reception section 52 increases as the transmission intensity of the radio signal of the transmission section 42 increases And the amount of the descent of the signal portion 51 in the descending signal increases as the reception intensity of the radio signal of the receiver 52 increases. Since the strength of the radio signal is an analog signal, it is an attribute possessed by the signal itself without any additional information processing or conversion.

Thus, when a large sensor output occurs due to a severe collision of the sensor (or a noncontact calculation distance is very close), there is a possibility that a large accident occurs and a degree of compression is greatly generated. Therefore, (Or slightly noncontact distance) is small and a small sensor output is generated, the number of accidents is small and the degree of squeezing is not large, so that the work table 10 can be lowered. Since the falling signal is outputted after the stop signal which is essentially outputted irrespective of the impact of the sensor or the contact strength (or the noncontact calculation distance proximity), the strength of the analog radio signal So that complete escape can be achieved taking into account the squeezing state in accordance with the impact of the sensor or the strength of contact.

<Analog Pairing >

On the other hand, the detectors installed on one work station are not always fixed. Sometimes there is a lot of room to change the detectors assigned to the elevated workbench. In this case, it is necessary to newly set or update the matching (pairing) relationship between the reception unit 52 of the high-altitude workbench and the transmitter unit 42 of the newly carried sensor.

To this end, if the distance between the transmitter 42 and the receiver 52, which is determined according to the reception strength of the radio signal, is within a predetermined distance, and the transmitter 40 is an unregistered transmitter, And a setting unit 53 for setting the analog wireless parameter and registering the analog wireless parameter in the transmitter 40 and the receiver 50.

The pairing between the receiving unit 52 and the transmitting unit 42 is preferably performed when the work table 10 is at a home position, that is, the lowest position at which the sensor can be installed or a predetermined distance therefrom. If the work table 10 is lifted too far from the home position or a predetermined distance, the distance between the transmitter 42 and the receiver 52 becomes far away, and the sensor is already determined. The position of the work table 10 can be known from the distance between the transmitter 42 of the transmitter 40 of the detector installed in the work table 10 and the receiver 52 of the receiver 50 installed in the controller, Can be determined according to the reception strength of the radio signal.

3, the setting unit 53 sets the distance between the transmitter 40 and the receiver 50, that is, the distance between the transmitter 42 and the receiver 52 within a predetermined distance (near) Y), the registration mode is activated. The setting unit 53 may be used in the future wireless communication between the transmitting unit 42 and the receiving unit 52 if the nearby transmitter 40 is an unregistered transmitter S12 that is not registered in the receiver 50 Set the analog radio parameters to be set. The set analog radio parameters are registered (S13) by being stored in a storage unit (not shown) of the storage unit 43 and the receiver 50 of the transmitter 40 and registered in the radio communication in the monitoring mode .

Here, whether or not the transmitter is an unregistered transmitter may be determined on the basis of a predetermined time. Thus, a transmitter that has been registered in the past may also be considered unregistered after the reference time.

It is preferable that the start timing of the registration mode is started in a state where the work table 10 is raised from the home position to a position not too high. In the home position, there is a possibility that a pressure accident occurs when the work table 10 is raised to an excessively high position because the sensor is installed and then removed again, and the change is frequent. Therefore, It is preferable that the registration is performed when the height of the work table 10 is raised so that detachment of the sensor is impossible and the height of the sensor does not occur.

< Variation example  - emergency controller>

On the other hand, occurrence of a pressing accident may be caused by manual operation of the operating unit 21, but it is often caused by a failure of the controller 22. There is a possibility that the controller 22 may not operate properly even if the controller 22 outputs a pause signal and a falling signal in the signal unit 51. [

The receiver 50 is provided with an emergency controller 54 that receives the pause signal and the falling signal from the signal unit 51 and directly drives the actuator 23 to pause and fall in priority to the original controller 22 ) Is further preferably provided. There may be various configurations in which the emergency controller 54 operates prior to the original controller 22. For example, if the actuator 23 is of the fluid pressure type, at least one of the fluid pressure circuits of the original controller 22 A configuration may be adopted in which a solenoid valve is attached to a part and the electromagnetic valve is turned off by the emergency controller 54 and the fluid pressure circuit of the emergency controller 54 is connected to the actuator 23. For example, A switch is put on at least a part of the drive circuits of the original controller 22 to turn off the switch in the emergency controller 54 and drive the drive circuit of the emergency controller 54 to the actuator 23, As shown in Fig.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, the present invention is not limited thereto. For example, the detector may further include an alarm device (not shown) such as light, sound, and vibration, and a separate detection signal receiver (not shown). At this time, when an output of the rail sensor 41 of any one of the sensors is generated, it is a matter of course that the signal from the transmitter 40 is received and received by the receiver 50 side of the controller 22 as described above. At the same time, it is possible to output a predetermined accident occurrence alarm to the alarm device of the sensor which has output the rail sensor 41, so that it is possible to notify the surrounding workers to which sensor the accident occurred. Then, the signal output from the transmitter 40 is simultaneously received by the detection signal receivers of other nearby sensors, and an output indicating a predetermined emergency is output to the alarms of these sensors, It is preferable that the workers are constructed so that they can come up with a rapid emergency structure.

Meanwhile, both the transmitter and the receiver may be configured to perform digital wireless communication. In this case, the transmitter of the transmitter is configured to digital-wireless transmit a radio signal including a digital intensity value corresponding to the strength of the sensor output according to a predetermined digital radio parameter. The receiver of the receiver digitally wirelessly receives the radio signal from the transmitter according to the digital radio parameter. In this way, the intensity of the sensor output is transmitted digitized.

Here, the digital wireless parameter may be configured to include a parameter related to at least one of a channel to be used for digital wireless communication, a distinguishable protocol , or a modulation . By validating this digital radio parameter, the validity of the received radio signal can be verified.

In this structure, since the intensity of the sensor output is transmitted in the order of the transmitter, the receiver, and the signal portion, the signal portion can perform control corresponding to the intensity of the sensor output. That is, as the intensity of the sensor output increases, the digital intensity value of the radio signal of the transmitter increases, and as the digital intensity value of the radio signal of the transmitter increases, the received digital strength value of the radio signal of the receiver increases, And the amount of the falling of the signal portion in the falling signal becomes larger as the received digital intensity value of the radio signal becomes larger.

And if the distance between the transmitter and the receiver is within a predetermined distance and the transmitter is an unregistered transmitter, the receiver determines whether the digital value of the digital signal is digital And a setting unit for setting a wireless parameter and registering in the transmitter and the receiver.

Modifications, improvements, and modifications made by those skilled in the art within the scope of the claims are to be construed as being within the scope of the present invention.

INDUSTRIAL APPLICABILITY The present invention can be used in the industry of a safety system using a helmet for high-altitude operation.

10: Work table 11: Contact structure
12: Railing sensor
20: elevator 21:
22: controller 23: actuator
24: Mechanism
30: Bogie
40: Transmitter 41: Sensor
42: Transmission unit 43:
50: receiver 51:
52: Receiving unit 53: Setting unit
54: Emergency controller

Claims (8)

A safety system for a high-altitude work station having a controller for driving an actuator of an elevator for elevating and lowering a work platform, and a signal delivery system for transmitting a signal from the detector provided in the work platform to the controller,
The signal delivery system comprises:
At least one transmitter installed in the detector,
A receiver coupled to the controller and receiving a radio signal of the transmitter,
The wireless communication system comprising:
The transmitter includes:
Sensors to detect shock or contact made of a non-contact type sensor that detects a contact distance sensor and a non-contact outputs the sensor output of the intensity corresponding to said distance for outputting a sensor output of the intensity corresponding to the impact or contact strength ,
A transmitter for transmitting a radio signal having an intensity corresponding to the strength of the sensor output in analog radio transmission in accordance with a predetermined analog radio parameter;
And,
The receiver includes:
A receiver for analog radio reception of the radio signal from the transmitter in accordance with the analog radio parameter;
On the basis of the radio signal validly received by the receiving unit, the signal output unit for once a stop signal and a falling signal to the controller
, &Lt; / RTI &gt;
In the receiver,
And a setting unit for setting the analog wireless parameter and registering the analog wireless parameter in the transmitter and the receiver if the distance between the transmitter and the receiver is determined within a predetermined distance and the transmitter is an unregistered transmitter, More
And a safety system for a high-altitude work vehicle having a wireless communication system for a detector. The method according to claim 1,
The analog radio parameters include parameters relating to at least one of a channel to be used for analog radio communication, a pattern of distinguishable waveforms or waveforms, or modulation
And a safety system for a high-altitude work vehicle having a wireless communication system for a detector. The method according to claim 1 or 2,
The greater the intensity of the sensor output, the greater the transmission intensity of the radio signal of the transmitter,
The greater the transmission intensity of the radio signal of the transmission section, the greater the reception intensity of the radio signal of the reception section,
And the amount of descent in the down signal of the signal portion becomes larger as the reception strength of the radio signal of the receiver becomes larger
And a safety system for a high-altitude work vehicle having a wireless communication system for a detector. A safety system for a high-altitude work station having a controller for driving an actuator of an elevator for elevating and lowering a work platform, and a signal delivery system for transmitting a signal from the detector provided in the work platform to the controller,
The signal delivery system comprises:
At least one transmitter installed in the detector,
A receiver coupled to the controller and receiving a radio signal of the transmitter,
The wireless communication system comprising:
The transmitter includes:
Sensors to detect shock or contact made of a non-contact type sensor that detects a contact distance sensor and a non-contact outputs the sensor output of the intensity corresponding to said distance for outputting a sensor output of the intensity corresponding to the impact or contact strength ,
A transmitter for digitally wirelessly transmitting a radio signal including a digital intensity value corresponding to the intensity of the sensor output according to a predetermined digital radio parameter;
And,
The receiver includes:
A receiver for digitally wirelessly receiving the radio signal from the transmitter in accordance with the digital radio parameter;
On the basis of the radio signal validly received by the receiving unit, the signal output unit for once a stop signal and a falling signal to the controller
, &Lt; / RTI &gt;
In the receiver,
If the distance between the transmitting unit and the receiving unit, which is determined according to the received digital strength value of the radio signal, is within a predetermined distance and the transmitter is an unregistered transmitter, the digital radio parameter is set and registered in the transmitter and the receiver Additional setting section
And a safety system for a high-altitude work vehicle having a wireless communication system for a detector. The method of claim 4,
The digital wireless parameter includes a parameter relating to at least one of a channel to be used for digital wireless communication, a distinguishable protocol , or a modulation
And a safety system for a high-altitude work vehicle having a wireless communication system for a detector. The method according to claim 4 or 5,
The greater the intensity of the sensor output, the greater the digital intensity value of the radio signal of the transmitter,
The greater the digital strength value of the radio signal of the transmitter, the greater the received digital strength value of the radio signal of the receiver,
And the amount of descent in the down signal of the signal portion becomes larger as the received digital intensity value of the radio signal of the receiving portion is larger.
And a safety system for a high-altitude work vehicle having a wireless communication system for a detector. delete delete

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