TWI651461B - Exit push rail monitoring system and method of monitoring an exit push rail system for a door - Google Patents

Abstract

A time-delay escape exit push rail system for a door having a push rail, a sensor, and a controller coupled to the sensor, the push rail being relative to a housing in an original position and A second position moves to open the door, and when the push rail moves between the original position and the second position, the sensor determines the position of the push rail. The sensor detects a current position of the push rail at the original position, and the controller determines whether the current position of the push rail detected by the sensor is acceptable at a predetermined position relative to the original position Within the location range. If the controller determines that the current position of the push rail is outside of the predetermined range, the controller unlocks the door for immediate exit, communicates an error message via light or sound, and/or communicates with a remote monitoring device.

Description

Export push rail monitoring system and method for monitoring exit rail pushing system for door

The present application claims priority to U.S. Patent Application Serial No. 61/925,794, filed on Jan. 10, 2014, and U.S. Pat.

The present invention relates to the control of doors, and more particularly to doors employing push rails or pads that can be monitored for attempting to exit through the door.

The time-delay escape exit device includes a push track or pad with a "required to leave" surveillance function, and is commonly used in schools, nursing homes, delivery rooms, Alzheimer's disease areas, psychiatric hospitals, airports, shopping centers, libraries, and other locations. To provide a means of monitoring outings to prevent unauthorized departures from leaving the door. When a time-delay escape exit device is equipped and the push rail or pad is pressed away from the normal home position, the monitoring function within the device detects the movement and issues a warning horn or siren sound from the push rail To remind the staff that someone is trying to go out. The horn or siren sound can be delayed to wait for the push rail to remain compressed for a predetermined amount of time, for example, 1 to 5 seconds, to avoid nuisance alarms. Pressing the push rail or pad also triggers a "delayed escape" condition that starts the timer as the set time period. Then the outlet device can remain closed And locking to prevent the door from opening and going out, for a required amount of delay time, for example, 15 seconds or more, so that the staff has time to judge the violation to be handled to make an appropriate response. After the set time period expires, the push rail is released and the standard exit device allows the door latch to unlock to allow the individual to freely open and immediately exit the door. After this set period of time, the irreversible alarm state will then remain until its authorized personnel reset. After expiration of a predetermined period of time, for example 30 to 60 seconds, whether at the door or by remote control of the device, the exit device can be automatically reset and re-armed from an alarm condition, or manually weighted Assume.

Such time-delay escape exit devices can be used to control most standard types of door locks and latches, such as rims, surface vertical bars, concealed vertical bars, and blink outlet devices. They are typically stand-alone, externally-protected magnetic locks with a push-rod assembly. A standard size key-operated key cylinder in the push rail assembly or a remote control ground-connecting device that can be used by an authorized person to release the device and provide instant or out-of-the-box with a key, for example: 5 to 40 seconds or Above, skip the alert. The key can also be used by an authorized person to reset the device. If connected to a fire or other remote alarm, the time-delay escape device can also be released to allow immediate escape if such an alarm is triggered. When any one of the rows of doors enters an alarm state, the time-delay escape exit devices in the row of rows are connected such that the time-delay escape function can be group-released, or the rows of doors can be remotely released in other manners.

A spring or other mechanism maintains the push rail or pad of the time-delay escape exit device before and after the push rail or pad is pressed Extended or "original" position. If, when released, the device's push rail or pad does not remain or return to the proper original position, or even a slight distance difference, the product will enter "error mode", alerting the end user that the product is no longer Operable. Failure of the device's push rail or pad to be held or returned to the proper original position may be caused by incorrect installation, damage, obstruction or worn-out components, and any other condition that affects the push rail or pad.

In view of the problems and deficiencies of the prior art, it is an object of the present invention to provide a system and method for monitoring an exit push rail, and in particular, a time-delay escape exit device.

Another object of the present invention is to provide a time-delay escape exit device that has improved reliability and is less susceptible to errors due to problems with the push rail or pad in the original position.

It is a further object of the present invention to provide a time-delay escape exit device that maintains an operational state despite the slight misalignment of the push rail or pad upon release.

Still another object of the present invention is to provide a time lapse escape exit device that eliminates the need for frequent on-site adjustments and automatically adjusts the change in the trajectory or pad at the original position within a predetermined range.

It is still a further object of the present invention to provide a method and control system for a time lapse escape exit device that continuously monitors the original position of the push rail or pad.

Other objects and advantages of the present invention will be apparent from the description and will be apparent to some extent.

The above and other objects achieved in one aspect of the present invention will be apparent to those skilled in the art, which is directed to an exit push rail monitoring system that includes a housing mountable to a door, a push rail that moves between the original position and a second position of the housing, and a sensor that is coupled to one of the push rail or the housing. A control circuit is coupled to the sensor to detect the current position of the push rail at the home position. The control circuit uses the current position of the push rail detected by the sensor to determine whether the push rail is within a predetermined acceptable position range relative to one of the original positions.

The sensor can be an analog Hall effect sensor connected to one of the push rail or housing. The apparatus may further include a magnet coupled to the other of the push rail or the housing, the analog Hall effect sensor and the magnet being mountable when the push rail is in the home position and the first When moving between the two positions, there is relative motion between the analog Hall effect sensor and the magnet. The control circuit is connectable to the analog Hall effect sensor to detect a current position of the push rail at the original position, and the control circuit can use the push detected by the analog Hall effect sensor The current position of the track to determine if the push track is within the predetermined acceptable position range relative to the original position. The control circuit coupled to the analog Hall effect sensor can detect a current position of the push rail when the push rail moves away from a previous home position.

The system can further include an alarm coupled to the control circuit, and the control circuit can activate the alarm if the current position of the push rail is outside a predetermined range. A timer can be connected to the control circuit, and the control circuit can determine the interval set by the timer Whether the push rail is within the predetermined acceptable position range relative to the original position. The control circuit detects the current position of the push rail at periodic intervals.

If the current position of the push rail is outside a predetermined range, the control circuit can indicate an error in the exit push rail system, and/or the control circuit can initiate one or more of the following actions: a) activating one Alarm, b) unlock the door for immediate exit, c) communicate an error message via light and/or sound; d) communicate the alarm or error status to a remote monitoring device. The control circuit can determine whether the push rail is in the second position, and if the push rail is judged not to be in the second position, the current position of the push rail can be detected at periodic intervals.

In a further aspect, the present invention is directed to a method of monitoring an exit rail system for an door, the door including a push rail and an analog Hall effect sensor magnet, the push rail being relative to a housing Moving between an original position and a second position to open the door, the analog Hall effect sensor magnet is mounted to have a therebetween when the push rail moves between the original position and the second position Relative movement. The method includes using the analog Hall effect sensor to detect a current position of the push rail at the original position, and determining the current position of the push rail detected by the analog Hall effect sensor Whether the push rail is within a predetermined acceptable range of positions relative to the original position.

In another aspect, the present invention is directed to a method of monitoring a time delay escape exit railing system for a door, the door including a movable relative to a housing between an original position and a second position to open The push rail of the door, one for detecting the push rail in the original position and the second position A sensor that determines the position of the push rail when moving between the sets, and a controller connected to the sensor. The method includes using the sensor to detect a current position of the push rail at the original position, and using the controller to determine whether the current position of the push rail detected by the sensor is relative to the The original location is within a predetermined acceptable range of locations. If the controller determines that the current position of the push rail is outside a predetermined range, the controller indicates an error in the delayed escape exit trajectory system, and/or initiates one or more of the following actions: a) Activate an alarm, b) unlock the door for immediate exit, c) communicate an error message via light or sound, and/or d) communicate the alarm or error status to a remote monitoring device. The method can further include using the controller to determine whether the push rail is in the second position to open the door, wherein if the push rail is determined not to be in the second position, the controller determines the current position of the push rail.

The analog Hall effect sensor can be used to detect a current position of the push rail when the push rail moves away from a previous original position. The current position of the push track can be detected at periodic intervals. The current position of the push track can be detected by a control circuit in a controller. If the current position of the push rail is outside a predetermined range, the controller may initiate one or more of the following actions: a) activating an alarm, b) unlocking the door for immediate exit, c) passing a light or sound Communicate an error message and/or d) pass the alarm or error status to a remote monitoring device.

The method can further include determining whether the push rail is in the second position to open the door, and if the push rail is determined not to be in the second position, the current position of the push rail can be detected at periodic intervals.

20, 20’, 20” ‧ ‧ delayed escape exit devices

22‧‧‧

24‧‧‧ Hinges

24a‧‧‧Electric hinge

25‧‧‧Power and/or control connections

26‧‧‧ door frame

27‧‧‧Lock

28‧‧‧Latch

29‧‧‧Lock

30‧‧‧Tracking

32‧‧‧ housing

34a, 34b‧‧‧ bracket assembly

36‧‧‧Connecting arm

38a‧‧‧One end

38b‧‧‧Other end

39a, 39b‧‧ Axis

40‧‧‧Hall Effect Sensor

42‧‧‧ coil type return spring

43a, 43b‧‧‧ arms

44‧‧‧ magnet

50‧‧‧ Controller

52‧‧‧Main control system

60‧‧‧ Horn (alarm)

62‧‧‧Key tube

64‧‧‧ key

100‧‧‧Normal operation

It is believed that the features of the invention, which are novel and elemental features of the invention, are described in conjunction with the particularity of the invention. These figures are for illustrative purposes only and are not to scale. In any event, the invention as a matter of both the organization and the method of operation can be best understood by referring to the following detailed description, BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of an embodiment of a time-delay escape exit device of the present invention mounted on a portion of an open door.

Figure 2 is a front perspective view of the time-delay escape exit device of Figure 1.

Figure 3 is a top perspective view of the internal component of the time-delay escape exit device of Figure 1.

Figure 4 is a cross-sectional view of the push rail in the extended, home position, section 3 of the time-delay escape exit device along line 4-4.

Figure 5 is a cross-sectional view of the portion of the delayed escape exit device of the push rail in the compressed, second position, and third views.

Figure 6 is a flow chart showing the normal operation method of the delayed escape outlet device of the present invention.

Figure 7 is a flow chart showing the calibration method of the original position and voltage of the push rail of the time-delay escape outlet device of the present invention.

Figure 8 is a flow chart showing the error mode method of the time-delay escape outlet device of the present invention.

In the embodiments of the present invention, reference is made to the drawings of Figures 1 through 8, wherein like reference numerals refer to like features of the invention.

The invention modifies the prior art delayed escape outlet device, A monitoring function for measuring the position of the push rail or pad is provided. Unless otherwise stated, the term push rail should also refer to a pad or other mechanism that is pushed by a single user to attempt to exit through the door controlled by the time delay exit device. The monitoring function in one embodiment of the invention utilizes a magnet, an analog Hall effect sensor, and a microprocessor having firmware control therein. The push track is monitored by measuring the "original position" or any position difference from the "original position" which is a fully extended position. The movement of the magnet is arranged to combine with the movement of the push rail. The analog Hall effect sensor is a converter that changes the output voltage in response to the application of the magnetic field of the magnet and remains in a rest position. Therefore, any movement from the push rail is detected by the analog Hall effect sensor through the movement of the push rail and the magnet. The voltage output of the analog Hall effect sensor is detected by the processor. Any movement in the push rail provides a voltage difference. The processor can have a firmware or a software that determines whether the push rail is in the original position by voltage measurement. Any movement from this position can create a voltage difference that causes the firmware or software to evaluate whether the movement reaches a predetermined value to trigger the processor to activate the alarm mode, or whether the push rail is not in the home position to initiate the error mode. In a typical application, when a user presses the push rail, the push rail and magnet move toward the analog Hall effect sensor, which delivers a voltage differential to the processor to initiate the product into an alarm mode. For the original position monitoring function, the sensor determines whether the original position parameter, ie, the voltage output, is at a predetermined time through a self-adjusting calibration routine at startup, at any desired time or at periodic intervals. Within acceptable limits, and continuous calibration throughout the service. The method and system ensure that the device is at any time Proper operation.

An example of a time-delay escape exit device employing the system and method of the present invention is shown in Figures 1 through 5. The time-delay escape exit device 20 is horizontally mounted on a door 22 that swings between a closed position and an open position on the hinge 24, the hinges being mounted to an edge of the door and the door frame 26 (Fig. 1). Power and/or control connections 28 can be established to the time-delay escape exit device from a motorized hinge portion 24a of a master control system 52 that can monitor one or more time-delayed escape exit devices 20', 20 "The state of other similarly configured doors, and the operation of the doors, the time-delayed escape exit devices are separate or grouped. The latch 28 in the lock 27 at the other edge of the door is normally extended, locked in position The door latch 29 prevents the door from opening. When the time-delay escape exit device is operated by pushing the push rail 30 toward the door, a horn or alarm 60 emits a sound while waiting for a delay time while still remaining After the amount of depression is applied to the rail, the latch 28 will move inward to the unlocked position, allowing the user to push the rail by continuously applying the force to push the door open. After the user is outside the door and the door is closed For example, with a door closer, the latch automatically returns to the locked position normally. Any type of door lock or latch can be controlled by the time delay escape device 20.

A more detailed view of an embodiment of the time-delay escape exit device 20 is shown in Figures 2 through 4. The housing 32 is a rectangular structure and includes a pair of bracket assemblies 34a, 34b (Fig. 3) that support the long push rails 30. On each of the bracket assemblies, a connecting arm 36 is pivotally coupled to a shaft 39a fixed to the base of the housing 32 at one end 38a and to the push rail 30 at the other end 38b. A shaft 39b on the inner side. The push rail 30 shown in Fig. 4 is in an extended or home position with a distance d ₁ between the inner surface of the push rail and the base of the housing 30. As shown in FIG. 5, since the push rail 30 is pushed inwardly and compressed, the push rail 30 moves closer to the housing base to a shorter distance d ₂ , and the movement touches the sensor, To signal the presence of someone trying to go out, as explained further below. Simultaneous rotational pivoting of the pair of arms 36 also causes the push rail to move slightly horizontally (on the left side of Figures 3 through 5) when the push rail retaining position is parallel to and within the housing. Each bracket assembly can have a coil type return spring 42 that surrounds the shaft 39b and has arms 43a, 43b that engage the inside of the push rail 30 and the arm 36, respectively, to urge the connecting arm away from the The rail is pushed to urge the push rail away from the base of the housing, back to the extended or original position of the push rail, when a person does not apply force to push the push rail inward.

An analog Hall effect sensor 40 is provided and located on a stationary portion of the housing, shown here on the bracket assembly 34a (Figs. 4 and 5). In order to detect when the push rail has been pushed inward, and to trigger the system, a magnet 44 is provided and located on the connecting arm 36, the movement of the magnet is combined with the push rail, and in the sense of Hall effect Near the detector. Alternatively, the magnet 44 can be fixed to the non-movable housing, and the analog Hall effect sensor 40 can be fixed to the movable connecting arm or the push rail. Regardless of whether the component is fixed and movable, when the push rail moves between a home position extending away from the base of the housing and a second position closer to the base of the housing, the analog Hall effect sensor The relative motion with the magnet can be judged. Detecting the push rail movement and determining the degree of movement is achieved by a control circuit connected to the analog Hall effect sensing And located in controller 50 within housing 32. A controller 50 includes control circuitry and is coupled to the analog Hall effect sensor 40, the alarm 60, and the key cylinder 62. Due to the relative movement of the analog Hall effect sensor 40 and the magnet 44, the control circuit measures the voltage output of the analog Hall effect sensor 40, and once the voltage changes by a predetermined amount, the push rail 30 and the link arm 36 are indicated. Fully moving inward, the horn or alarm 60 in the housing is triggered by the control circuit, and a timer in the control circuit begins to count to determine when the latch is released to allow passage through the door. Go out. The key 64 can be operated by an authorized person to operate the key cylinder 60 to send a signal to the controller 50 to perform a skip, release, or reset delay escape exit device 20. Through the connection 28, the controller 50 can also be connected to a row of similarly configured doors by a main controller 52 and operated remotely as a component of the doors (Fig. 1).

Because of the erroneous installation, damage, obstruction, worn springs or other components of the push rail, or various other factors, the push rail 30 in the home position may not continue to lie at a repeatable, precise distance d ₁ . The change or misplacement of such push rail 30 at the home position is shown in Figure 4 by the variable Δd. In prior art devices, if the pusher or pad does not remain or return to the exact home position, or even a slight distance, when released, the time-delay device will enter an error mode and disable operation. In order to avoid such an erroneous mode to disable the device, the present invention determines whether the trajectory is within a predetermined acceptable range of positions relative to the original position prior to entering a disabled error mode. More specifically, the control circuit in the controller 50 uses the current position of the push rail detected by the analog Hall effect sensor to determine whether the push rail is within such a predetermined acceptable position range. And calibrate the error mode.

When the push rail is re-equipped and in the fully extended home position, the analog Hall effect sensor 40 combined with the magnet 44 outputs a voltage value ( _Vhome ). This V _home voltage value is measured by the microcontroller 50 and serves as a relative value for determining the position of the push rail. Comparing the relative value with the instantaneous measurement value, it is determined that the push rail has moved away from the original position to generate an alarm condition. Through experimental data, it can be determined without undue experimentation, and it can be determined that an acceptable voltage range is established when the push track is at the "original position". If the V _{home home} position voltage value is judged to be outside the predetermined range, it will be considered that an error condition has occurred. In accordance with the method of the present invention, a calibration routine can be periodically executed by the controller, for example, every 30 minutes to measure the V _home to ensure that it is within the predetermined voltage range. If it is within this predetermined range, the V _home value is used to calculate the position of the push track. If it is outside this range, a calibration error is considered to have occurred.

The normal operation of the time delay escape device of the present invention is shown in flowchart 100 of FIG. This normal operation is determined by condition 110, where 1) the door is closed and locked, 2) the latch is extended, and 3) the time-delay escape exit device is equipped, but not in an alarm state. The controller 50 then waits and determines if the push rail is pressed so that it passes the travel position (position d _{2 in} Fig. 5). By measuring the voltage of the analog Hall effect sensor 40 to the controller, the voltage is the _home position voltage Vhome, plus a voltage that varies or increases due to the closer movement of the magnet 44, such as +0.260 V. If the measured analog Hall effect sensor reaches a voltage value indicating that the push rail has been sufficiently pressed to indicate that a user wishes to exit through the gate 130, then after a predetermined set period of time, for example, 15 or For 30 seconds, the controller causes the horn or siren to sound, and unlocks the door and allows to go out. After this set period of time, the irreversible alarm state is then maintained until it is reset by the authorized person. If the push rail is not pushed for a predetermined period of time, for example, 30 minutes, the controller enters the push rail position calibration mode 200.

The push rail position calibration mode 200 is shown in more detail in the flow chart of FIG. The controller determines if the requirement 210 to perform the calibration is met. These requirements may include 1) any group action is inactive (ie no door delay release escape by other rows of connected doors), 2) the system alarm is not activated, and 3) the track activation mode is not activated Triggering (ie, the voltage from the analog Hall effect sensor does not indicate that the push rail is compressed). If the calibration conditions are not met, the calibration is skipped 220 and the device operates as planned, not in the error mode. If the calibration conditions are met, by measuring the analog Hall effect sensor voltage plus the allowable original positional deviation, such as between 0.390V and 1.033V, the controller determines if the push rail is at an original The predetermined allowable range of the position (Δd in Fig. 4). If the push rail is judged to be outside the allowed original voltage and position value range, the error mode 300 is entered, and as shown in Fig. 8: 1) the remote alarm is activated immediately, 2) the door is unlocked for immediate Go out, and 3) communicate the error message by light or sound, as explained in block 310 or in other desired manners. The lights can be located on the device as color LEDs or other indicators that can be emitted from the horn 60. Alternatively, the alert or error status can be communicated to a remote monitoring device, such as the primary control system 52, to alert the authorized personnel. If the push rail is judged to be within the original location and the voltage value of the allowable range, by reading and recording the current class than Hall effect sensor voltage V _home, 240 for calibration. Then, from the voltage reading of the relative position of the analog Hall effect sensor and the magnet, the new current position voltage value V _home is used to further determine the position of the push rail, and determine whether the push rail has been pressed. Exit through the door with a start delay.

An embodiment of the time-delay escape exit device and control system thereof of the present invention may take the form of a fully hardware embodiment or a form of embodiment using software (including firmware, resident software, microcode, etc.). Moreover, an embodiment can be embodied in the form of a computer program product via a physical computer usable storage medium having computer usable code, the code being included in the medium. The medium may be formed by a memory device or a processor 50 memory portion as shown in FIG. Computer code or firmware embodying embodiments of the present invention may also be present on an optical or magnetic storage medium, particularly when transported or stored prior to loading the computer code or firmware to a controller. The computer code or firmware can be loaded by connecting a computer system or an external controller to the program interface of the processor 50.

It should be understood and appreciated that the present invention can be implemented by a system, method, apparatus, computer readable medium, non-transitory computer readable medium, and/or computer program product. The present invention can take the form of a fully hardware embodiment, a fully soft embodiment (including firmware, resident software, microcode, etc.), or a combination of soft and hard form embodiments, the combined software And hardware forms are generally referred to herein as a "circuit," "module," or "system." The invention can In the form of a computer program product, one or more computer readable media having computer readable code embodied therein are implemented.

One or more computer readable media can be used alone or in combination. The computer readable medium can be a computer readable storage medium or a computer readable signal medium. A suitable computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Other embodiments of a suitable computer readable storage medium should include, but are not limited to, the following: an electrical connection having one or more wires, a portable computer magnetic disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), a programmable read-only memory (EPROM or flash memory), an optical fiber, a portable CD-ROM (CD-ROM), and a An optical storage device, a magnetic storage device, or any suitable combination of the foregoing. A suitable computer readable storage medium may be any physical medium that can contain or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium can include a propagated data signal having computer readable program code embodied therein, for example, in the base frequency or as part of a carrier. Such propagated signals may take any of a variety of forms including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium can be any computer readable medium that is not a computer readable storage medium, but can be communicated, propagated, or transmitted for use by or in connection with an instruction execution system, apparatus, or device. Program.

The code contained on a computer readable medium can be transmitted using any suitable medium, including but not limited to wireless, wireline, fiber optic cable, radio frequency (RF), etc., or any suitable combination of the foregoing.

Computer code for implementing the morphological operations of the present invention can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++, or the like, and a conventional programming language. Such as a C programming language or a similar programming language. The code may be executed entirely on the user's computing device (eg, a computer), partially on the user computing device (eg, a separate package of software), partially executed on the user computing device, and partially Execution is performed on a remote computing device or entirely on the remote computing device or server. In the latter case, the remote computing device can be connected to the user computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be connected to an external computing The device (for example, through the use of an Internet Service Provider (ISP) Internet).

The present invention is described herein with reference to flowchart illustrations and/or block diagrams of a method, apparatus (system), computer readable medium, non-transitory computer readable medium, and computer program product according to embodiments of the invention. . It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams can be implemented by computer program instructions. The computer program instructions can be provided to a general purpose computing device (e.g., a computer), a special purpose computing device, or a processor of other programmable data processing device to generate a mechanical language for transmission through the computing device or other programmable data. deal with The instructions executed by the processor of the device create a method of implementing the functions/actions specified in the block diagrams or blocks of the flowchart illustrations and/or blocks.

The computer program instructions can also be stored in a computer readable medium that can be used in a particular manner to indicate the functionality of a computing device, other programmable data processing device, or other device for storage in the The instructions in the computer readable medium produce an instruction set containing instructions for implementing the functions/actions specified in the block diagram or blocks of the flowchart illustration and/or block diagram.

The computer program instructions can also be loaded into a computing device, other programmable data processing device, or other device to cause a series of operational steps to be performed on the computing device, other programmable device, or other device to produce A computer-implemented program that causes the instructions executed on the computing device or other programmable device to provide functions/acts for performing the functions specified in the block or blocks of the flowchart illustrations and/or block diagrams. program.

It will be appreciated that the functional blocks or modules illustrated in the figures are illustrative of the architecture, functionality, and operation of systems, methods, and computer program media and/or products in accordance with the various embodiments of the invention. In this regard, each block in the figures can represent a module, a segment, or a portion of code that includes one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functionality noted in the blocks in the graph may be dysfunctional. For example, the functions of the two blocks shown in the following may be, in fact, They are executed substantially simultaneously, or the blocks may sometimes be executed in the reverse order, depending on the functionality involved. It should also be noted that each block and block combination in any one of the Figures can be implemented by a dedicated hardware-based system, or a combination of special-purpose hardware and computer instructions that perform the specified Function or action. Moreover, although communication between functional blocks or modules can be indicated in one direction in the figures, these communications can also be both.

Accordingly, the time lapse escape exit device of the present invention can periodically and continuously calibrate the original position of the push rail or pad to obtain new position values due to mechanical and/or electrical component variation effects or changes due to the environment. Accordingly, the present invention achieves one or more of the above objects and provides a failure to continuously detect such devices, whether or not the device is worn or mechanically blocked, or even if the original position of the push track is in each calibration cycle. Shift. The benefits of the time-delay escape exit device of the present invention include eliminating frequent field adjustments during and after installation of the prior art track monitoring system. The present invention improves product reliability based on accurate travel position monitoring and continuous calibration of the original position. Improve the switching reliability without changing the moving parts, and activate the alarm signal in this error mode to improve safety. The invention further provides for self-adjustment and detection during the manufacturing process.

While the invention has been described in detail with reference to the preferred embodiments embodiments Accordingly, it is contemplated that the sub-items will include any such alternatives, modifications, and variations as the sub-claims fall within the true scope and spirit of the invention.

Claims (20)

An exit push rail monitoring system comprising: a housing mountable to a door; a push rail movable relative to the housing between an original position and a second position, the original position having a relative position relative to the original position a predetermined acceptable range of positions; a sensor coupled to one of the push rails or the housing; a control circuit coupled to the sensor to detect a current position of the push rail relative to the original position The control circuit uses the current position of the push rail detected by the sensor to determine whether the push rail is within the predetermined acceptable position range relative to the original position; and a timer connected to the And a control circuit that determines whether the push rail is within the predetermined acceptable position range relative to the original position at an interval set by the timer. The system of claim 1, wherein the monitoring system is for a time-delay escape exit device, and the sensor is an analog Hall effect sensor connected to one of the push rail or the housing, and further comprising a magnet coupled to the other of the push rail or housing, the analog Hall effect sensor and the magnet being mounted when the push rail moves between the home position and the second position a relative motion between the analog Hall effect sensor and the magnet; and wherein the control circuit is coupled to the analog Hall effect sensor to detect a current position of the push rail relative to the original position The control circuit uses the current position of the trajectory detected by the analog Hall effect sensor to determine the trajectory Whether it is within the predetermined acceptable position range relative to the original position. The system of claim 2, wherein the control circuit coupled to the analog Hall effect sensor detects a current position of the push rail when the push rail moves away from the home position. The system of claim 3, further comprising an alarm coupled to the control circuit, the control circuit activating the alarm if the current position of the push track is outside a predetermined range. The system of claim 1 further comprising an alarm coupled to the control circuit, the control circuit activating the alarm if the current position of the push track is outside a predetermined range. The system of claim 1, wherein the control circuit detects the current position of the push rail at periodic intervals. The system of claim 1, wherein the control circuit connected to the sensor detects a current position of the push rail when the push rail moves to the original position, and if the push rail has finished moving, The current position of the push rail is outside the predetermined acceptable range of positions, and the control circuit initiates an error mode in the exit push rail monitoring system. The system of claim 1, wherein the control circuit initiates one or more of the following actions if the current position of the push track is outside a predetermined range: a) activating an alert through the light and/or sound, b) The door is unlocked for immediate exit, and/or c) an error message is sent to a remote monitoring device. The system of claim 1, wherein the control circuit determines whether the push rail is in the second position, and wherein if the push track is judged not to be in the first The second position detects the current position of the push rail at periodic intervals. A method of monitoring an exit railing system for a door, the door comprising a push rail and an analog Hall effect sensor magnet, the push rail being positionable between a home position and a second position relative to a housing Moving to open the door, the home position having a predetermined acceptable range of positions relative to the home position, the analog Hall effect sensor magnet being mounted on one of the push rail or the housing for Sensing relative motion between the push rail as it moves between the home position and the second position, the method comprising: using the analog Hall effect sensor magnet at an interval set by a timer Detecting a current position of the push rail relative to the original position; and at each interval, using the current position of the push rail detected by the analog Hall effect sensor magnet to determine whether the push rail is Within the predetermined acceptable range of positions relative to the original location. The method of claim 10, wherein the analog Hall effect sensor magnet is used to detect a current position of the push rail when moving the push rail away from the original position. The method of claim 10, wherein the current position of the push track is detected at periodic intervals. The method of claim 10, wherein the current position of the push track is detected by a control circuit in a controller. The method of claim 13, wherein the analog Hall effect sensor magnet is used to detect a current position of the push rail when the push rail is moved to the original position, and if the push rail has finished moving When, The current position of the push rail is outside the predetermined acceptable range of positions, and the controller initiates an error mode in the exit push rail system. The method of claim 14, wherein if the current position of the push track is outside a predetermined range, the controller initiates one or more of the following: a) activating an alert through the light and/or sound, b) The door is unlocked for immediate exit and/or c) an error message is sent to a remote monitoring device. The method of claim 10, further comprising determining whether the push rail is in the second position to open the door, and wherein if the push track is judged not to be in the second position, then the interval is detected at a periodic interval Measure the current position of the push rail. A method of monitoring a time delay escape exit railing system for a door, the door comprising a push rail, a sensor, and a controller coupled to the sensor, the push rail being tangible with respect to a housing Moving between the original position and a second position to open the door, the sensor determining the position of the push rail when the push rail moves between the original position and the second position, the method comprising: a timer-connected interval connected to the controller, the sensor is used to detect a current position of the push rail relative to the original position; and at each interval, the controller is used to determine the sense Whether the current position of the push track detected by the detector is within a predetermined acceptable position range relative to the original position. The method of claim 17, wherein when the push track is moved to the original position The sensor is configured to detect a current position of the push rail, and wherein if the push rail has finished moving, the controller determines that the current position of the push rail is outside the predetermined acceptable position range The controller initiates an error mode in the time-delay escape exit trajectory system. The method of claim 17, wherein if the current position of the push track is outside a predetermined range, the controller initiates one or more of the following actions: a) activating an alert through the light and/or sound, b) The door is unlocked for immediate exit and/or an error message is sent to a remote monitoring device. The method of claim 17, further comprising using the controller to determine whether the push rail is in the second position to open the door, and wherein the controller determines if the push track is determined not to be in the second position The current position of the push track.