CN201225921Y

CN201225921Y - System for preventing mine car from weighing

Info

Publication number: CN201225921Y
Application number: CNU2008200710814U
Authority: CN
Inventors: 李书勋; 王辉
Original assignee: ZHENGZHOU TAX ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: ZHENGZHOU TAX ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2008-06-18
Filing date: 2008-06-18
Publication date: 2009-04-22
Anticipated expiration: 2018-06-18

Abstract

The utility model relates to a system that is used for preventing the tramcar from escaping the weighing, which comprises an orbit-type pressure sensor, two pairs of laser photoelectric switches, an inductance inductor, a weighing controller and a computer of a monitoring center, wherein, both the orbit-type pressure sensor and the inductance inductor are installed on the tramcar orbit; the two pairs of laser photoelectric switches are respectively arranged at both sides of the orbit-type pressure sensor, and the gap between the two pairs of the laser photoelectric switches is not more than the length of the tramcar; the orbit-type pressure sensor, the inductance inductor and the signal output ends of the two pairs of the laser photoelectric switches are respectively connected with the signal input end of the weighing controller; the signal output end of the weighing controller is connected with the computer of the monitoring center through a network; That whether the weighing result is valid or shows the situation such as the cheating and the damage of the induction parts is judged by the signals that are received on the signal input ends of the weighing controller; the cheating alarm signal and the alarm signal for the damage of the induction parts are transmitted to the computer of the monitoring sensor through the network.

Description

A kind of system that prevents mine car from evading weighing

Technical field

The utility model relates to and a kind ofly mineral products is carried out the system and method that prevents mine car from evading weighing that adopted when output monitoring is taxed in revenue department.

Background technology

Revenue department is that the output with mineral products is foundation when mineral products are taxed, and the gained data of weighing when ore removal of the mine car by being loaded with mineral products are levied taxes to mineral products manufacturing enterprise; In practical operation, the personnel of revenue department can not so just be necessary mineral products are effectively monitored for a long time at the scene, mining area, evade taxes to prevent mineral products manufacturing enterprise understatement output.

At present, be used to prevent that the method for output of mineral product cheating from mainly containing several:

1, the diagnostic method of weighing: two rail mounted pressure transducers are installed on tramroad, one of them rail mounted pressure transducer is controlled another rail mounted pressure transducer output control signal as the switch of weighing, its advantage can effectively distinguish the pedestrian by or mine car passes through, and shortcoming is, mineral products manufacturing enterprise can adopt equally " bridging " and method escape mine car and weigh.

2, ground induction coil diagnostic method: bury ground induction coil underground in the middle of track, when utilizing mine car to pass through, the magnetic field of coil changes, thereby judges that mine car passes through.Advantage: not disturbed by the pedestrian.Shortcoming: construction is big, and metal just can make thrashing.

3, infrared correlation diagnostic method: a kind of system that prevents mine car from evading weighing that provides for the patented claim of 200710078287.x as application number, two groups of infrared switches are installed in the track both sides respectively, when mine car through out-of-date, block infrared beam, differentiate mine car and pass through, its advantage is effectively to differentiate the direction that mine car passes through, but its shortcoming is the interference that is subject to pedestrian or large piece article, and infrared transmitter is easy to buying on the market, makes the risk of thrashing very high.

4, ultrasound wave diagnostic method: sonac is installed in orbit, is determined that according to reflection wave mine car passes through, but because of its cost height, cost performance is low, seldom use.

The utility model content

The purpose of this utility model provides a kind of system that can effectively prevent mine car from evading weighing.

A kind of system that prevents mine car from evading weighing, wherein: this system comprises the computing machine of rail mounted pressure transducer, two pairs of laser photoelectricity switches, inductance inductor, weighing controller and Surveillance center, wherein, rail mounted pressure transducer and inductance inductor are installed on the tramroad, distance between the corresponding respectively both sides that are installed in the rail mounted pressure transducer of the two pairs of laser photoelectricity switches, the two pairs of laser photoelectricity switches is not more than the length of a mine car; Corresponding respectively pressure signal input end, inductance signal input part, first, second laser signal input end that connects weighing controller of the signal output part of rail mounted pressure transducer, inductance inductor and two pairs of laser photoelectricity switches; The signal output part of weighing controller connects the computing machine of Surveillance center by network.

The utility model adopts technique scheme will reach following technique effect:

A kind of system that prevents mine car from evading weighing that the utility model provides, rail mounted pressure transducer, the two pairs of laser photoelectricity switches and three kinds of sensing apparatus of inductance inductor have been adopted, earlier whether effectively and whether do fraud, whether the sensing device failure is arranged the signal of receiving according to each signal input part of weighing controller judges weighing results, and does the alerting signal of fraud alerting signal, sensing device damage to the computing machine of Surveillance center by network.The relative common on the market system that prevents mine car from evading weighing that utilizes the manufacturing of infrared correlation diagnostic method principle, the inductance inductor of the technical program setting can respond to when metal mine car process and output signal arrives weighing controller, judgement signal in conjunction with rail mounted pressure transducer, two pairs of laser photoelectricity switches, can effectively tell weighing results and whether effectively reach the situations such as cheating, device failure of putting up a bridge, and accordingly result is sent to the computing machine of Surveillance center.As fully visible, the relative prior art of this system can more effectively prevent mine car from evading weighing, improves the accuracy rate of weighing-appliance; Each device that is adopted in the native system is existing components and parts, and is with low cost, and therefore, prior art is practical more economically relatively.

Description of drawings

Fig. 1 prevents the theory diagram of the system of mine car from evading weighing for the utility model;

Fig. 2 is the installation diagrammatic top view of system shown in Figure 1 on tramroad;

Fig. 3 is the installation diagrammatic side view of system shown in Figure 1 on tramroad.

Embodiment

Embodiment:

A kind of mine car 4 that prevents is escaped the system of weighing, as shown in Figure 1, this system comprises rail mounted pressure transducer 1, two couples of laser photoelectricity switch A, B, inductance inductor 2, the computing machine of weighing controller and Surveillance center, wherein, rail mounted pressure transducer 1 and inductance inductor 2 are installed on the tramroad 6 that mine car 4 advances, see installation diagrammatic top view shown in Figure 2 and the side view of Fig. 3, two couples of laser photoelectricity switch A, the corresponding respectively outside, two ends that is installed in rail mounted pressure transducer 1 of B: as Fig. 2, shown in Figure 3, the Laser emission element A1 of laser photoelectricity switch A, receiving element A2 divides and to be located at rail mounted pressure transducer 1 and inductance inductor 2 near two outsides that go out the mine endpiece, the Laser emission element B1 of laser photoelectricity switch B, receiving element B2 divides two outsides that are located at rail mounted pressure transducer 1 and inductance inductor 2 close mine depths ends, be provided with like this, also can be according to two laser photoelectricity switch A, the priority time sequencing of B output signal is differentiated sending a car of mine car 4 and is removed car, so that it is deduct mine car 4 railway carriage weight, heavy to the ore deposit yield meter more accurately; Wherein, the distance between two couples of laser photoelectricity switch A, the B is no more than the length of a mine car 4; Corresponding respectively pressure signal input end, inductance signal input part, first, second laser signal input end that connects weighing controller of the signal output part of rail mounted pressure transducer 1, inductance inductor 2 and two couples of laser photoelectricity switch A, B; The signal output part of weighing controller connects the computing machine of Surveillance center by network.Rail mounted pressure transducer 1, inductance inductor 2 and two couples of laser photoelectricity switch A, B are delivered to weighing controller with the corresponding signal that senses and judge, result after weighing controller will be judged again such as weighing results and warning message convert corresponding signal to and send the computing machine of Surveillance center of revenue department to by network, are handled accordingly by revenue department.

The above-mentioned mine car 4 that prevents of the present utility model is escaped the system of weighing, and its concrete determining step is as follows:

A), weighing controller is judged whether its first, second laser signal input end receives the signal of two couples of laser photoelectricity switch A, B simultaneously, and is judged whether its inductance signal input part receives the signal of inductance inductor 2, the output signal whether the pressure signal input end receives rail mounted pressure transducer 1 simultaneously:

If first, second laser signal input end has been received the signal of two couples of laser photoelectricity switch A, B simultaneously, and, simultaneously, its pressure signal input end, inductance signal input part are received the output signal of rail mounted pressure transducer 1, inductance inductor 2 respectively, enter step b);

If its first, second laser signal input end has been received the signal of two couples of laser photoelectricity switch A, B simultaneously, simultaneously, its pressure signal input end has been received the output signal of rail mounted pressure transducer 1, and its inductance signal input part is not received signal, enters step c);

If its first, second laser signal input end has been received the signal of two couples of laser photoelectricity switch A, B simultaneously, and its pressure signal input end, inductance signal input part are not all received signal, enter step d);

If its first, second laser signal input end has been received the signal of two couples of laser photoelectricity switch A, B simultaneously, and simultaneously, its inductance signal input part has been received the output signal of inductance inductor 2, and its inductance signal input part is not received signal, enters step e);

If its only laser signal input end received that the signal of corresponding laser photoelectricity switch or two laser signal input ends all do not receive signal, and its pressure signal input end, inductance signal input part have been received the output signal of rail mounted pressure transducer 1, inductance inductor 2 respectively, enter step f);

B), it is effective to be judged as weighing results; Continue to enter step a);

C), to be judged as weighing results effective, control its output terminal and send inductance inductor 2 faiture alarms to the computer equipment of Surveillance center by network; Continue to enter step a);

D), be judged as external interference, weighing results is invalid; Continue to enter step a);

E), be judged as the cheating of putting up a bridge, control its output terminal and send the cheating of putting up a bridge by network to the computing machine of Surveillance center and report to the police; Continue to enter step a);

F), to be judged as weighing results effective, control its output terminal and send electric laser optoelectronic switch faiture alarm to the computing machine of Surveillance center by network; Continue to enter step a).

The inductance inductor of the technical program setting can respond to when metal mine car process and output signal arrives weighing controller, judgement signal in conjunction with rail mounted pressure transducer, two pairs of laser photoelectricity switches, can effectively tell weighing results and whether effectively reach the situations such as cheating, device failure of putting up a bridge, and accordingly result is sent to the computing machine of Surveillance center.As fully visible, the relative prior art of this system can more effectively prevent mine car from evading weighing, improves the accuracy rate of weighing-appliance.

Claims

1, a kind of system that prevents mine car from evading weighing, it is characterized in that: this system comprises the computing machine of rail mounted pressure transducer, two pairs of laser photoelectricity switches, inductance inductor, weighing controller and Surveillance center, wherein, rail mounted pressure transducer and inductance inductor are installed on the tramroad, distance between the corresponding respectively both sides that are installed in the rail mounted pressure transducer of the two pairs of laser photoelectricity switches, the two pairs of laser photoelectricity switches is not more than the length of a mine car; Corresponding respectively pressure signal input end, inductance signal input part, first, second laser signal input end that connects weighing controller of the signal output part of rail mounted pressure transducer, inductance inductor and two pairs of laser photoelectricity switches; The signal output part of weighing controller connects the computing machine of Surveillance center by network.