CN2724050Y - Automatic detector for projector work state - Google Patents

Abstract

The utility model discloses an automatic detector for projector work state, which can ensure fast detecting whether the projector can normally work by the network, without dismounting projector. The utility model is composed of a phototonus element 2, a signal mediating processing circuit 3, a command execution circuit 4 for opening and closing the projector, and a central controller 5. The automatic detector for projector work state is characterized in that the phototonus element 2 installed on the projector, monitors the light path output of the projector, and then outputs different signals to the mediating processing circuit 3; these signals are mediated and processed, and then forms different electrical signals, When the light signal achieves a definite threshold value, and then the high level are outputted and represents the projector is at normal opening operating state. Otherwise, the low level is outputted and represents the projector is at abnormal condition. During a certain time, if the automatic detector for projector work state detects the state of the projector is at opening state, which indicates the opening is normal; otherwise, the opening is abnormal.

Description

Projector's duty automatic detection device

Technical field:

The utility model is a kind of by the network fast detecting projector pick-up unit of operate as normal whether.Belong to the microelectronic network applied technical field.

Technical background:

Projector is a widely used teaching utility appliance in the teaching field.In daily use, require the maintainer to want often its state to be checked to guarantee the normal use in teaching.Projector safeguarded after fault takes place in the past, do not have a kind of automatic detection device can be at any time initiatively checkout equipment, be passive to the maintenance of projector.Can not in time find and safeguard.

Summary of the invention:

The utility model purpose is to disclose a kind of projector duty automatic detection device, can guarantee under the situation of projector of needn't removing stage makeup and costume, by network fast detecting projector operate as normal whether.

The utility model principle of work: the sensor by being placed in ad-hoc location before the projector lens detects the duty of projector's light path, and detected value and normal setting value compared, simultaneously comparative result is carried out transmission process and demonstration by network, make equipment manager in time grasp a kind of equipment of the duty of projector.

Its composition of the utility model comprises: photoinduction element 2, signal are reconciled treatment circuit 3, projection machine open/close command execution circuit 4, central controller 5; It is characterized in that: be installed in the photoinduction element 2 in the projector, the projector's light path output situation that monitors, export different signals and reconcile treatment circuit 3 to signal, this signal is reconciled through signal and is handled, and forms different electric signal, light signal reaches certain threshold value, then export high level, represent projector to be in the normal boot-strap duty, otherwise, on behalf of projector, output low level be in abnomal condition.This result can deliver to central controller.System's output alarm signal; Central controller can send projector's power-on command, by projector's start, shutdown command executive circuit, and the start of control projector; Partly monitoring the state of projector by status monitoring, in the regular hour, is open state if detect the state of projector, show that then start is normal, otherwise it is undesired to start shooting.If start is normal, central controller continues to send out a shutdown command, within a certain period of time, closes if status monitoring partly monitors projector, show that then shutdown is normal, otherwise it is undesired to shut down.

Central processing unit U5 and gate circuit U21 and resistance R 4, variable resistor RW10, capacitor C 7 are formed the carrier frequency that oscillating circuit produces infrared projection control, after projector's control command that processor U2 sends central processing unit U5 and the carrier frequency modulation, amplify through amplifier Q1, Q2, TY_KZ1 sends infrared control signal by the infrared control signal generator, projector's start, the shutdown of control infrared control mode; For the projector of RS232 serial ports control mode, 3 pin of central processing unit U5 directly send the serial ports control command, directly control projector's start, shutdown through infrared control signal generator TY_KZ1.

Projector light circuit detector S_TY also cooperates resistance R 1 and capacitor C 1 can become electric signal with the projector light line state, after process processor U1 comparer and a standard of luminous intensity compare, the output light path testing result is delivered to the data input port of central processing unit U5.High level represents light path normal, and low level represents light path undesired.The standard of luminous intensity can be reconciled by resistance R 1 or variable resistor RW1.

Testing process is: central processing unit U5 sends the control command of start, shutdown, by S_TY feedback projector light line state information, judges whether projector's work is normal.

Description of drawings

Fig. 1 is the utility model system architecture diagram;

Fig. 2 is the utility model system circuit diagram;

Embodiment:

The utility model method of work is: the measurement numerical value of at first presetting this type normal operating conditions before projector installs.After projector opens; pick-up unit is according to the automatic sensor numerical value that detects and return projector of setting-up time, and while and normally default comparing are in case numerical value exceeds normal range; then pick-up unit can be pointed out warning to managerial personnel, cuts off power protection projector of projector simultaneously.This invention can duty timely and effective and active detecting projector also in time be reported to the police, and improves the equipment life cycle.And fully guarantee normally to impart knowledge to students.Effectively reduce the teaching accident that causes because of equipment failure, accomplish to prevent trouble before it happens.

The utility model advantage is: the active detecting of (1) duty, change the passive maintenance after projector goes wrong cisco unity malfunction in the past, and become regular active detecting, pinpoint the problems and in time safeguard.(2) initiatively report to the police.Pick-up unit is found the undesired alert notice technician at once of projector's work.(3) Network Transmission of realization detection signal makes the maintainer just can accurately judge the projector position of breaking down by network, reaches the spot fast and in time safeguards.

Claims (2)

1. projector's duty automatic detection device, its composition comprises: photoinduction element (2), signal are reconciled treatment circuit (3), projection machine open/close command execution circuit (4), central controller (5); It is characterized in that: be installed in the photoinduction element (2) in the projector, the projector's light path output situation that monitors, export different signals and reconcile treatment circuit (3) to signal, this signal is reconciled through signal and is handled, and forms different electric signal, light signal reaches certain threshold value, then export high level, represent projector to be in the normal boot-strap duty, otherwise, on behalf of projector, output low level be in abnomal condition; This result can deliver to central controller; System's output alarm signal; Central controller can send projector's power-on command, by projector's start, shutdown command executive circuit, and the start of control projector; Partly monitoring the state of projector by status monitoring, in the regular hour, is open state if detect the state of projector, show that then start is normal, otherwise it is undesired to start shooting; If start is normal, central controller continues to send out a shutdown command, within a certain period of time, closes if status monitoring partly monitors projector, show that then shutdown is normal, otherwise it is undesired to shut down;

2. projector as claimed in claim 1 duty automatic detection device, it is characterized in that: central processing unit U5 and gate circuit U21 and resistance R 4, variable resistor RW10, capacitor C 7 are formed the carrier frequency that oscillating circuit produces infrared projection control, after projector's control command that processor U2 sends central processing unit U5 and the carrier frequency modulation, amplify through amplifier Q1, Q2, TY_KZ1 sends infrared control signal by the infrared control signal generator, projector's start, the shutdown of control infrared control mode; For the projector of RS232 serial ports control mode, 3 pin of central processing unit U5 directly send the serial ports control command, directly control projector's start, shutdown through infrared control signal generator TY_KZ1; Projector light circuit detector S_TY also cooperates resistance R 1 and capacitor C 1 can become electric signal with the projector light line state, after process processor U1 comparer and a standard of luminous intensity compare, the output light path testing result is delivered to the data input port of central processing unit U5; High level represents light path normal, and low level represents light path undesired; The standard of luminous intensity can be reconciled by resistance R 1 or variable resistor RW1;

Testing process is: central processing unit U5 sends the control command of start, shutdown, by S_TY feedback projector light line state information, judges whether projector's work is normal.