TWI413946B - Security circuit device - Google Patents

Abstract

A security circuit device includes a security host to enforce the basic function. A signal transceiver line is connected to the security host to transmit and receive the command and power, and then read the ID data of a terminal ID chip. An input line is connected to the security host. A sensor is connected to the signal transceiver line and the input line to detect a secure state of the protection area, and feedback the secure state to the security host via signal transceiver line. The terminal ID chip is connected to the ends of the signal transceiver line and the input line, providing a code to be feedback to the security host via signal transceiver line.

Description

Security device with terminal password loop detection

The invention relates to a safety circuit device for monitoring a terminal detector, in particular to a security device with terminal password loop detection.

As the lifestyle changes, people's time at home is gradually shortened due to factors such as shifts or travel. At the same time, with the deterioration of public security, many households or company numbers have begun to choose to use security devices to protect their homes, people and property. On the security.

However, conventional security devices are prone to failure due to the destruction of thieves. Therefore, the security device starts to install the loop detection device. When the loop is abnormal, the security device will issue a warning to ensure the normal operation of the security device. In general, the loop detection is only a "circuit short circuit" or "loop open circuit" detection without terminal impedance. As shown in "1A" and "1B", the short-circuit detection wiring is installed on the parallel circuit. Multiple sensors are provided to automatically disconnect when the sensor detects an abnormality, and an alarm is issued when the host detects a short circuit. In addition, the disconnected detection wiring system is provided with a plurality of sensors on the series circuit, and when the sensor is abnormal, the circuit is automatically disconnected, and the security host detects the disconnection and issues an alarm.

In addition, the terminal impedance is added at the end of the loop. As shown in "2A" and "2B", the loop 1 provides a DC voltage, the loop 2 is connected to a ground protection resistor, and the loop 2 is connected to the host. The voltage value can be detected to determine whether the loop is normal or not, but the loop line may be increased due to aging, so the loop detection must be designed such that the voltage within a certain range is normal, higher than the range. If it is determined to be a short circuit in the loop, if it is lower than the range, it is considered as a loop open circuit to avoid the situation of maintaining the host's false alarm.

However, this method is vulnerable to the destruction of thieves, one is "connected impedance type", that is, the terminal impedance is connected to the safety circuit, and then the rear circuit line is cut, then all After the sensor on the loop is detached, the full host is invalidated. The other is "fixed voltage type", that is, the battery is connected to the security host circuit, and then the circuit after the circuit is cut off. At this time, the security host will still misjudge the loop as normal, but the actual situation of the security host is also lost. State.

In view of the above problems, the present invention provides a security device with terminal password loop detection, which can prevent the above-mentioned damage situation. The present invention uses the security host to read the password data of the terminal identification chip to detect whether the loop line is normal.

In order to achieve the above object, the present invention provides a security device with terminal crypto loop detection. The security device with terminal password data loop detection includes a security host to perform basic functions of preservation; an input and output line is connected to the security host to output signals and drive power, and then detects the input password data; an input line, connection The security host is connected to the output line and the input line to detect a security status in a protection zone, and the input line is transmitted back to the security host; and a terminal identifies the chip and is connected to the The input and the end of the input line are used to provide a password data, and the input and output lines are continuously fed back to the security host.

The security host further includes a detection loop device, which reads and determines the password data of the terminal through the input and output lines. The detection loop device further includes an open circuit bungee, which serves as a two-way communication between the maintenance host and the terminal identification chip. In addition, the present invention further includes a release device connected to the security host to perform a startup or a release on the security host. A control center is connected to the security host for monitoring the status of one of the hosts, and a memory device for storing the password data of the terminal identification chip.

The detailed features and advantages of the present invention are described in detail in the embodiments of the present invention. Anyone skilled in the art can easily understand the related purposes of the present invention and advantage.

Please refer to FIG. 3, which is a security device with terminal password loop detection disclosed in the present invention, including a security host 100, an input line 200, an input line 300, a sensor 400, and a terminal identification chip 500.

Referring to FIG. 3, the security host 100 can perform basic functions of security, such as receiving a security status from the sensor 400, and issuing an alarm signal. The security host 100 includes a central processing unit 101 and a memory device 102. The memory device 102 can be used to store the password information of the terminal identification chip 500. The input and receive lines 200 and the input line 300 are connected to the security host 100, and after the sensor 400 and the terminal identification chip 500 are connected to the input/output line 200 and the input line 300, a return line is formed. At the same time, the security host 100 outputs the driving power and control signals to the sensor 400 and the terminal identification chip 500 through the input and output lines 200, so that the sensor 400 and the terminal identification chip 500 can operate and transmit the relevant signals to the security host through the input and output lines 200. 100. To maintain the operation of the security device with terminal cryptographic data loop detection of the present invention. Only the circuit lines formed by the security host 100, the input and output lines 200 and the input line 300 are not limited to those shown in FIG. 1 , and the circuit lines of the present invention can be connected to form more than one according to the needs of the user. route.

As described above, the sensor 400 is connected across the input and output lines 200 and the input line 300 to detect the security status in the protection zone, and is transmitted back to the security host 100 by the input and output lines 200.

The terminal identification chip 500 is connected to the input/output line 200 and the input line 300, and the installation position is preferably the end of the input/output line 200 and the input line 300. The terminal identification chip 500 is used to provide a password data. The terminal identification chip 500 is a chip having unique password data, and is continuously fed back to the security host 100 through the input and output lines 200. As described above, the password information provided by the terminal identification chip 500 is stored together in the memory device 102 for the security host. The 100 comparison determines whether the input/output line 200 has a password data feedback in accordance with the terminal identification chip 500.

As shown in the figure, the security host 100 further includes a detection loop device 103, and the password data of the terminal identification chip 500 can be read through the input and output line 200. The detection loop device 103 can preferably be an Open Drain, which can serve as a two-way communication between the security host 100 and the terminal identification chip 500.

The security device with terminal password loop detection of the present invention further has a release device 600 connected to the security host 100 to start or release the security host 100. The control center 700 is connected to the security host 100 for monitoring the status of the security host 100. The security host 100 has a communication controller 104 for communicating with the control center 700.

Referring to FIG. 4, the security device with terminal crypto loop detection of the present invention further has a protection circuit 105 connected to the detection circuit device 103 via the input and output lines 200 and the input line 300, and is protected by the protection circuit 105. High voltage current through input line 300. Here, the protection circuit 105 can be a Zener diode or a surge absorber connected to the detection circuit device 103, or an inductor or a fuse connected in series to the detection circuit device 103. The high voltage current of the input line 300 is bypassed, but the invention is not limited thereto.

When the present invention is used, the security host 100 is brought into the setting mode (ARM) by setting the release unit 600. The detection loop device 103 can be connected in parallel with the boost resistor 106 from the DC voltage 107. After passing through the protection line 105, it passes through the output line 200 to the sensor 400, and the wafer 500 is identified by the terminal. Finally, it passes through the protection line 105 via the input line 300 and returns to the detection loop device 103.

The security device with terminal password loop detection of the present invention stores the password data of the terminal identification chip 500 of each loop in the memory device 102 during installation, and when the security device enters the protection mode, the detection loop device 103 continuously detects The terminal on each circuit identifies the cryptographic data of the chip 500 and checks whether the cryptographic data is the same as the content in the memory device 102. If the password information is incorrect, it is judged to be an error exception. If the password data cannot be read, if the potential at the time of reading continues to be high, the loop is judged to be a short-circuit abnormality; when the potential at the time of reading continues to be low, the loop is judged to be an open-circuit abnormality. At this time, the security host 100 transmits an abnormal state to the control center 700 through the communication controller 104.

The security device with terminal password loop detection of the present invention uses the detection loop device to continuously read the terminal to identify the chip password data, thereby achieving the method of preventing loop damage, which not only improves the security of the security device, but also reduces the error reporting. The number of times.

Although the technical content of the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any modifications and refinements made by those skilled in the art without departing from the spirit of the present invention are encompassed by the present invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.

100. . . Security host

101. . . CPU

102. . . Memory device

103. . . Detection loop device

104. . . Communication controller

105. . . Protection line

106. . . Lifting resistance

107. . . DC voltage

200. . . Output line

300. . . Input line

400. . . sensor

500. . . Terminal identification chip

600. . . Release device

700. . . Control center

Figure 1A is a short-circuit configuration diagram.

Figure 1B is a layout diagram of the open circuit type.

Figure 2A is a configuration diagram of a short-circuit type incorporating a terminal impedance.

Figure 2B is a block diagram of the open circuit type incorporating the termination impedance.

Figure 3 is a configuration diagram of an embodiment of the present invention.

Figure 4 is a configuration diagram of the detection loop device of the present invention.

100. . . Security host

101. . . CPU

102. . . Memory device

103. . . Detection loop device

104. . . Communication controller

200. . . Output line

300. . . Input line

400. . . sensor

500. . . Terminal identification chip

600. . . Release device

700. . . Control center

Claims (9)

A security device with terminal password loop detection, comprising: a security host, performing basic functions of preservation, including a detection loop device; an input and output line, connected to the security host, outputting a signal and driving power, and then detecting the input The password data; an input line connected to the security host; a sensor connected across the output line and the input line to detect a security status in a protection zone, and the output line is transmitted back to the security host; And a terminal identification chip connected to the input and output lines and the input line for providing the password data, the terminal identifying the chip continuously feeding back the password data to the detection loop device of the security host through the input and output lines, through the detection The loop circuit device determines that the terminal identifies the password data of the chip. The security device of claim 1, wherein the detection loop device further comprises an Open Drain as two-way communication between the security host and the terminal identification chip. The security device with the terminal cipher data loop detection of claim 1 further includes a protection circuit connected to the detection loop device for bypassing a high voltage current of the input line. The security device of claim 3, wherein the protection circuit comprises a Zener diode connected to the detection loop device for bypassing the high voltage current of the input line. . The security device of claim 3, wherein the protection circuit comprises a surge absorber connected to the detection circuit device for bypassing the high voltage current of the input line. The security device of claim 3, wherein the protection circuit comprises an inductor connected in series to the detection circuit device for bypassing the high voltage current of the input line. The security device of claim 3, wherein the protection circuit includes a fuse connected in series to the detection loop device for bypassing the high voltage current of the input line. The security device of claim 1, wherein the terminal identification chip is a chip having unique cryptographic data. The security device with the terminal cipher data loop detection of claim 1 further includes a memory device for storing the cryptographic data of the terminal identification chip.