Laser correlation detection technology-based personnel-deciding counting system for area to be detectedTechnical Field
The invention belongs to the technical field of safety production management, and particularly relates to a laser correlation detection technology-based personnel-deciding counting system for a region to be detected.
Background
In order to reduce the work safety risk in the dangerous area, the number of workers in the dangerous area must be limited. At present, most dangerous areas are still counted by operators manually turning over the counting cards. This way of counting people presents the following problems: 1) the multi-channel port cannot be considered, so that the personnel counting error is easily caused; 2) lack of excess alarm prompt for personnel; 3) the automation level is low, and the condition that the operator turns over the counting card less, more and mistakenly turns over the counting card exists; 4) the degree of intellectualization is low, and the access & exit of most dangerous areas also has some characteristics of open scene, for example, through personnel do not have identification (for example: identification cards, access cards, etc.); for another example, the entrance and the exit are not separated, and people entering and leaving the same entrance exist at the same time; the current personnel counting mode is difficult to realize intelligent counting.
Disclosure of Invention
The technical problem of the invention is solved: the defects of the prior art are overcome, the fixed-person counting system for the area to be measured based on the laser correlation detection technology is provided, and the problems that the prior art is easy to be interfered by the environment, cannot solve the problems of shielding, low counting precision, low intelligent degree and the like are solved.
In order to solve the technical problem, the invention discloses a laser correlation detection technology-based personnel-deciding counting system for a region to be detected, which comprises: the system comprises a first laser correlation detector, a second laser correlation detector, an address module and an alarm host, wherein the first laser correlation detector and the second laser correlation detector are arranged at any entrance and exit of a region to be detected in parallel at preset intervals; wherein,
the first laser correlation detector is used for generating a first light beam and a second light beam which are parallel, and reporting blocking information I according to the sequence of the blocked light beams;
the second laser correlation detector is used for generating a third light beam and a fourth light beam which are parallel, and reporting blocking information II according to the sequence of the blocked light beams;
the address module is used for coding the addresses of the first light beam, the second light beam, the third light beam and the fourth light beam respectively to obtain address codes, determining the blocked light beam according to the blocking information I and the blocking information II, and sending the address codes corresponding to the blocked light beam to the alarm host;
the alarm host is used for determining the sequencing of the address codes of the blocked light beams according to the address codes corresponding to the blocked light beams reported by the address module; and determining the personnel access information of the area to be measured according to the determined address code sequence of the blocked light beams.
In the above-mentioned surveyed area's that awaits measuring deciding staff counting system based on laser correlation technique, the alarm host computer still is used for:
counting according to the determined personnel access information of the area to be measured to obtain a counting result;
and determining the current personnel number information in the region to be detected according to the counting statistical result.
In the above system for counting the number of the fixed members of the region to be measured based on the laser correlation detection technique, the system further includes: an LED display screen; the LED display screen is connected with the alarm host;
and the LED display screen is used for receiving and displaying the current personnel number information in the area to be detected in real time.
In the above-mentioned surveyed area's that awaits measuring deciding staff counting system based on laser correlation technique, the alarm host computer still is used for:
and setting a personnel quantity limit value in the area to be tested, and when the current personnel quantity in the area to be tested is greater than or equal to the personnel quantity limit value, driving an audible and visual alarm to give an alarm through a relay so as to remind a manager to take personnel in and out control measures, thereby ensuring the safety and normal operation of the area to be tested.
In the above system for counting the number of the fixed members of the region to be measured based on the laser correlation detection technology, the address codes corresponding to the first light beam, the second light beam, the third light beam and the fourth light beam are sequentially as follows: the address coding I, the address coding II, the address coding III and the address coding IV.
In the above system for counting persons to be measured based on the laser correlation detection technique, when the alarm host determines the person entry and exit information of the area to be measured according to the determined sequence of the address codes of the blocked light beams, the method includes:
when the determined order of address codes of the blocked beams is: when the address code I → the address code II → the address code III → the address code IV, determining that a certain person enters the area to be tested;
when the determined order of address codes of the blocked beams is: when the address code IV → the address code III → the address code II → the address code I, determining that a person leaves the area to be tested.
In the above-mentioned order-taker counting system of the region to be measured based on the laser correlation detection technology, when the address code corresponding to the blocked light beam is sent to the alarm host by the address module, the system includes:
and converting the address code corresponding to the blocked light beam into a bus 485 signal and sending the bus 485 signal to the alarm host.
In the above-mentioned order-count system for the region to be measured based on the laser correlation detection technique,
the ground clearance of the first pair of laser correlation detectors and the second pair of laser correlation detectors is as follows: 80 cm-120 cm;
the preset interval between the first pair of laser correlation detectors and the second pair of laser correlation detectors is as follows: 150 cm-200 cm.
In the above-mentioned order-count system for the region to be measured based on the laser correlation detection technique,
the spacing between the first and second beams is: 60 cm-80 cm;
the interval between the third light beam and the fourth light beam is: 60 cm-80 cm.
In the above-mentioned order-count system for the region to be measured based on the laser correlation detection technique,
the single beam response time of the first laser correlation detector pair and the second laser correlation detector pair does not exceed 10 ms.
The invention has the following advantages:
(1) the system for counting the order-takers of the area to be measured based on the laser correlation detection technology utilizes at least two pairs of laser correlation detectors, an address module and an alarm host, realizes the statistics of the personnel access behaviors of the area to be measured (particularly a dangerous operation area) through light beam coding, and has the advantages of difficult environmental interference on light beams and better stability.
(2) The laser correlation detection technology-based personnel-deciding counting system for the area to be measured effectively improves the counting precision by improving the response time of a single light beam to be within 10ms, thereby ensuring the accuracy of a statistical result.
Drawings
FIG. 1 is a block diagram of a system for counting persons to be evaluated of an area to be evaluated based on a laser correlation detection technique according to an embodiment of the present invention
Fig. 2 is a schematic deployment diagram of a system for counting persons in an area to be measured based on a laser correlation detection technique according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, a block diagram of a system for counting persons in an area to be measured based on a laser correlation detection technique according to an embodiment of the present invention is shown. In this embodiment, the system for counting the number of the fixed-person in the region to be measured based on the laser correlation detection technology includes: the system comprises a first laser correlation detector 101 and a second laser correlation detector 102 which are arranged at any entrance and exit of an area to be detected in parallel according to a preset interval, an address module 103 which is respectively connected with the first laser correlation detector 101 and the second laser correlation detector 102, and an alarm host 104 which is connected with the address module 103. Wherein:
the first pair of laser correlation detectors 101 is used for generating a first light beam and a second light beam which are parallel, and reporting blocking information I according to the sequence of the blocked light beams.
And the second laser correlation detector 102 is used for generating a third light beam and a fourth light beam which are parallel, and reporting blocking information II according to the sequence of the blocked light beams.
And the address module 103 is used for coding the addresses of the first light beam, the second light beam, the third light beam and the fourth light beam respectively to obtain address codes, determining the blocked light beam according to the blocking information I and the blocking information II, and sending the address codes corresponding to the blocked light beam to the alarm host.
In this embodiment, the address codes corresponding to the first light beam, the second light beam, the third light beam, and the fourth light beam are sequentially: the address coding I, the address coding II, the address coding III and the address coding IV. It should be noted that the address code i, the address code ii, the address code iii, and the address code iv are only exemplary descriptions, and in an actual application process, the address code i, the address code ii, the address code iii, and the address code iv may be encoded by using any appropriate encoding method.
Preferably, when the address module sends the address code corresponding to the blocked light beam to the alarm host, the address module may specifically include: and converting the address code corresponding to the blocked light beam into a bus 485 signal and sending the bus 485 signal to the alarm host.
For example, when a person passes through and blocks the first light beam (i.e., the first light beam is blocked), the address module reports the address code corresponding to the first light beam to the alarm host. The process of blocking other light beams is similar to the first light beam and is not described in detail.
The alarm host 104 is used for determining the sequencing of the address codes of the blocked light beams according to the address codes corresponding to the blocked light beams reported by the address module; and determining the personnel access information of the area to be measured according to the determined address code sequence of the blocked light beams.
In this embodiment, when the alarm host determines the person entering and exiting information of the area to be measured according to the determined sequence of the address codes of the blocked light beams, the method may specifically include: when the determined order of address codes of the blocked beams is: when the address code I → the address code II → the address code III → the address code IV, determining that a certain person enters the area to be tested; when the determined order of address codes of the blocked beams is: when the address code IV → the address code III → the address code II → the address code I, determining that a person leaves the area to be tested.
In a preferred embodiment of the present invention, the alarm host may further be configured to: counting according to the determined personnel access information of the area to be measured to obtain a counting result; and determining the current personnel number information in the region to be detected according to the counting statistical result.
In a preferred embodiment of the present invention, the alarm host may further be configured to: the personnel quantity limiting value in the region to be detected is set, when the current personnel quantity in the region to be detected is larger than or equal to (exceeds) the personnel quantity limiting value, the audible and visual alarm is driven by the relay to give an alarm so as to remind a manager to take personnel access control measures, and therefore the safety and normal operation of the region to be detected are guaranteed.
In a preferred embodiment of the present invention, the system for counting the number of the dangerous areas based on the laser correlation detection technology may further include: and an LED display screen. And the LED display screen is connected with the alarm host.
Preferably, the LED display screen can be used for receiving and displaying the information of the number of the current personnel in the area to be detected in real time.
In a preferred embodiment of the invention, the single beam response time of the first and second pairs of laser correlation detectors does not exceed 10 ms. That is, after the person passes, the blocked beam can be restored to be connected within 10 ms.
In a preferred embodiment of the present invention, the height of the first pair of laser correlation detectors and the second pair of laser correlation detectors from the ground is: 80 cm-120 cm; the preset interval between the first pair of laser correlation detectors and the second pair of laser correlation detectors is as follows: 150 cm-200 cm.
In a preferred embodiment of the present invention, the interval between the first light beam and the second light beam is: 60 cm-80 cm; the interval between the third light beam and the fourth light beam is: 60 cm-80 cm.
Based on the above embodiments, the following description will be made with reference to a specific example.
At a certain entrance X of the dangerous arean(n is more than or equal to 1 and n is a positive integer) transversely and horizontally installing a laser correlation detector (double-beam coded laser correlation detector) S2n-1And a laser correlation detector S2n. Laser correlation detector S2n-1And a laser correlation detector S2nRespectively connected with address modules, which are opposite to the laser correlation detector S2n-1The two beams of light are sent out for encoding, and the address encoding is A1 and A2 in sequence, wherein A is used for indicating the laser correlation detector S2n-1(ii) a Similarly, the address module is to the laser correlation detector S2nThe two beams of light are sent out for encoding, and the address encoding is B2 and B1 in sequence, wherein B is used for indicating the laser correlation detector S2n。
The working principle (strategy) of the laser correlation detection technology-based member counting system for the region to be detected can be as follows: (1) when a certain entrance X of the dangerous areanWhen a person enters, the sequence of the address codes of the blocked light beams received by the alarm host is as follows: a1 → A2 → B2 → B1, the alarm host can judge that the person completely enters the dangerous area according to the sequence of the address codes. (2) Similarly, the sequence of the address codes of the blocked light beams received by the alarm host is as follows: b1 → B2 → A2 → A1, the alarm host can determine that the person completely leaves the dangerous area according to the sequence of the address codes.
In this embodiment, the alarm host may implement, based on the above working principle (policy), the judgment of the person entering or exiting condition in the dangerous area, and further implement the statistics and recording of the number of persons in the dangerous area.
Furthermore, through an LED display screen mounted on the alarm host through another 485 bus, the number of people in the dangerous area can be updated on line according to the statistics and record information of the number of people in the dangerous area acquired from the alarm host.
Furthermore, when the number of people on line exceeds the limit of the specified number of people, the audible and visual alarm can be driven to give an alarm through the relay, and managers are reminded to take personnel in and out control measures, so that the safety and normal operation of dangerous areas are guaranteed.
Preferably, a laser correlation detector S2n-1And a laser correlation detector S2nThe horizontal installation height of the laser correlation detector is generally in the range of the buttocks of a person (for example, 80 cm-120 cm), the response time of a single light beam is not more than 10ms, the distance between the two light beams is not less than 60cm, and the distance between the two pairs of laser correlation detectors is not less than 1.5 m.
In this embodiment, the alarm host can implement the defense area management functions of adding, managing, debugging and the like of the laser correlation detector; the counting and recording of the number of the personnel entering and exiting can be realized, and the functions of personnel number deciding, personnel number online returning to zero and personnel canceling can be set; the system can realize the functions of 'excess person' alarm statistics, recording the alarm occurrence time, storing complete historical alarms and personnel quantity records, and inquiring and printing reports.
The display content of the LED display screen is divided into two rows, the first row displays 'order member xx people online xx people', the second row displays 'normal' or 'over-member', the order member and the online people are updated according to the instruction sent by the alarm host, and the 'normal' or 'over-member' state is updated.
The audible and visual alarm realizes audible and visual alarm according to a linkage control instruction sent by a relay module in the alarm host, and reminds managers of paying attention and taking necessary personnel access limiting measures.
In addition, as shown in fig. 2, the number of each module unit in the staff-to-staff counting system for the area to be measured based on the laser correlation detection technology may be multiple groups, and the multiple groups are respectively disposed at different entrances and exits of the area to be measured to perform distributed counting statistics, or are respectively disposed at different entrances and exits of different areas to be measured, which is not limited in this embodiment.
The embodiments in the present description are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above description is only for the best mode of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Those skilled in the art will appreciate that the invention may be practiced without these specific details.