TWI494902B - Security monitoring apparatus and system thereof - Google Patents
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Description
本發明是關於一種保全裝置，特別是一種保全監測裝置及其系統。The present invention relates to a security device, and more particularly to a security monitoring device and system therefor.
保全迴路為感知器材透過線路連接至保全主機而成為保全系統防護的第一線尖兵，利用感知器動作時產生之短路或斷線狀態作為迴路警戒或異常發報之依據。當感知器有非預期狀況的動作時，則保全人員可於第一時間內前往確認線路及感知器之訊息。The preserving loop is the first line of defense for the protection system to connect to the security host through the line. The short circuit or disconnection state generated by the sensor action is used as the basis for loop warning or abnormal reporting. When the sensor has an unexpected behavior, the security personnel can go to the confirmation line and the sensor information in the first time.
目前市面上之保全迴路的偵測，是以終端電阻值、電壓電位值、時間值或/及終端晶片回傳密碼資料等方式判讀保全迴路的正常與否。其中，終端電阻值、電壓電位值和時間值判讀資料只有電壓準位和時間差，所以安全性低。舉例而言，具終端電阻值的保全監測裝置係可能因終端電阻端被串接電阻或者並接定電壓源而降低安全性。其中，終端晶片回傳密碼資料具有唯一性的密碼，所以安全性較高，然終端晶片回傳密碼資料唯一性的密碼係容易 遭受竊賊依規律測試而破解，以致使保全系統失去防護。At present, the detection of the safety circuit on the market is to determine whether the safety circuit is normal or not by means of terminal resistance value, voltage potential value, time value or/and terminal chip return password data. Among them, the terminal resistance value, the voltage potential value and the time value interpretation data have only the voltage level and the time difference, so the safety is low. For example, a security monitoring device with a terminating resistance value may reduce safety due to the series resistance of the terminating resistor terminal or a voltage source. Among them, the terminal chip backhaul password data has a unique password, so the security is high, and the terminal chip returns the unique password of the password data is easy. The thief was cracked according to the regular test, so that the security system lost its protection.
因此，保全系統如何有效地防護係為本案之發明人以及從事此相關行業之技術領域者亟欲改善的課題。Therefore, how to effectively protect the system is the subject of the inventor of the case and the technical field of the relevant industry.
有鑑於此，本發明提出一種保全監測裝置，保全監測裝置連接保全迴路，保全監測裝置包含：訊號產生模組、訊號偵測模組及警報模組。訊號產生模組輸出偵測訊號至保全迴路，其中偵測訊號切分為複數個時槽，此些時槽的至少其中之一的偵測訊號的波形與其他此些時槽的偵測訊號的波形不同。並且，經由訊號偵測模組接收流經保全迴路的偵測訊號。訊號偵測模組用以比對流經保全迴路前後的偵測訊號的每一對應的此些時槽的波形是否相同，以致於流經保全迴路前後的偵測訊號相異時輸出告警訊號。最後，警報模組響應告警訊號而輸出警報。In view of the above, the present invention provides a security monitoring device, and the security monitoring device is connected to the security circuit. The security monitoring device includes: a signal generation module, a signal detection module and an alarm module. The signal generating module outputs a detection signal to the security loop, wherein the detection signal is divided into a plurality of time slots, and the waveform of the detection signal of at least one of the time slots and the detection signals of the other time slots The waveform is different. Moreover, the detection signal flowing through the security loop is received through the signal detection module. The signal detection module is configured to compare whether the waveforms of the corresponding time slots of the detection signals before and after flowing through the safety circuit are the same, so that the alarm signals are output when the detection signals before and after the safety loop are different. Finally, the alarm module outputs an alarm in response to the alarm signal.
在一實施例中，一種保全監測系統，包含：保全監測裝置、複數個感知器及多工器。複數個感知器連接保全監測裝置，每一感知器分別具有對應之偵測訊號及流經保全迴路的偵測訊號。多工器連接於保全迴路與訊號偵測模組之間，多工器以時間間隔選擇每一感知器，訊號偵測模組對應時間間隔比對每一感知器所相應之偵測訊號及流經保全迴路的偵測訊號。In one embodiment, a security monitoring system includes: a security monitoring device, a plurality of sensors, and a multiplexer. A plurality of sensors are connected to the security monitoring device, and each of the sensors has a corresponding detection signal and a detection signal flowing through the security circuit. The multiplexer is connected between the security loop and the signal detection module, and the multiplexer selects each sensor at intervals, and the signal detection module corresponds to the detection signal and stream corresponding to each sensor according to the time interval. The detection signal of the preserved loop.
本發明之實施例之保全監測系統利用保全監測裝置產生並識別偵測訊號以偵測保全迴路是否被破壊。 其中，偵測訊號具複數個分時的時槽，並且於此些分時的時槽中以不同的調變方式呈現不同的波形，且於保全狀態下，訊號產生模組係持續地輸出不相同的偵測訊號，並訊號偵測模組可以逐次地辨識流經保全迴路的偵測訊號是否變異，以致使偵測訊號無法經由拷貝或規律性的測試而遭不法人士的仿製，而得以有效地保持保全迴路之正確性，及提升保全防護之安全性。The security monitoring system of the embodiment of the present invention uses the security monitoring device to generate and identify the detection signal to detect whether the security circuit is broken. The detection signal has a plurality of time-division time slots, and different waveforms are presented in different time-varying time slots, and in the security state, the signal generation module continuously outputs no The same detection signal and the signal detection module can identify whether the detection signal flowing through the security circuit is mutated one by one, so that the detection signal cannot be copied by the lawless person through copying or regular testing, and is effective. The ground maintains the correctness of the safety circuit and enhances the safety of the protection.
以下在實施方式中詳細敘述本發明之詳細特徵以及優點，其內容足以使任何熟習相關技藝者瞭解本發明之技術內容並據以實施，且根據本說明書所揭露之內容、申請專利範圍及圖式，任何熟習相關技藝者可輕易地理解本發明相關之目的及優點。The detailed features and advantages of the present invention are set forth in the Detailed Description of the Detailed Description of the <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> </ RTI> <RTIgt; The objects and advantages associated with the present invention can be readily understood by those skilled in the art.
1‧‧‧保全監測系統1‧‧‧Security monitoring system
100‧‧‧保全監測裝置100‧‧‧Security monitoring device
10‧‧‧訊號產生模組10‧‧‧Signal Generation Module
11‧‧‧脈寬調變產生器11‧‧‧ Pulse width modulation generator
12‧‧‧低通濾波器12‧‧‧Low-pass filter
13‧‧‧數位類比轉換器13‧‧‧Digital Analog Converter
14‧‧‧運算單元14‧‧‧ arithmetic unit
15‧‧‧輸出放大電路15‧‧‧Output amplifier circuit
20‧‧‧訊號偵測模組20‧‧‧Signal Detection Module
21‧‧‧類比數位轉換器21‧‧‧ Analog Digital Converter
22‧‧‧控制單元22‧‧‧Control unit
23‧‧‧接收放大電路23‧‧‧ Receive amplifier circuit
30‧‧‧警報模組30‧‧‧Alarm module
200‧‧‧保全迴路200‧‧‧Safety loop
300-308‧‧‧感知器300-308‧‧‧ Sensor
400‧‧‧多工器400‧‧‧Multiplexer
S1/S11/S12‧‧‧偵測訊號S1/S11/S12‧‧‧ detection signal
S1’‧‧‧偵測訊號S1’‧‧‧ detection signal
S2/S21/S22‧‧‧偵測訊號S2/S21/S22‧‧‧Detection signal
S2’‧‧‧偵測訊號S2’‧‧‧ detection signal
T1-T5‧‧‧時槽T1-T5‧‧‧ slot
PW1-PW16‧‧‧脈波訊號PW1-PW16‧‧‧ pulse wave signal
Dt‧‧‧延遲時間Dt‧‧‧Delayed time
第1圖係本發明一實施例之保全監測系統之方塊示意圖。1 is a block diagram of a security monitoring system in accordance with an embodiment of the present invention.
第2A圖係本發明之偵測訊號之示意圖。Figure 2A is a schematic diagram of the detection signal of the present invention.
第2B圖係本發明之流經保全迴路的偵測訊號之示意圖。Figure 2B is a schematic diagram of the detection signal of the present invention flowing through the security loop.
第3圖係本發明之保全監測系統之第一實施例之方塊示意圖(一)。Figure 3 is a block diagram (1) of a first embodiment of the security monitoring system of the present invention.
第4圖係本發明之保全監測系統之第一實施例之方塊示意圖(二)。Figure 4 is a block diagram (2) of the first embodiment of the security monitoring system of the present invention.
第5圖係本發明之保全監測系統之第二實施例之方塊示意圖(一)。Figure 5 is a block diagram (1) of a second embodiment of the security monitoring system of the present invention.
第6圖係本發明之保全監測系統之第二實施例之方塊示意圖(二)。Figure 6 is a block diagram (2) of a second embodiment of the security monitoring system of the present invention.
第7圖係本發明之保全監測裝置之偵測訊號之示意圖。Figure 7 is a schematic diagram of the detection signal of the security monitoring device of the present invention.
第8圖係本發明另一實施例之保全監測系統之方塊示意圖。Figure 8 is a block diagram of a security monitoring system in accordance with another embodiment of the present invention.
第1圖係本發明一實施例之保全監測系統之方塊示意圖。第2A圖係本發明之偵測訊號之示意圖。第2B圖係本發明之流經保全迴路的偵測訊號之示意圖。1 is a block diagram of a security monitoring system in accordance with an embodiment of the present invention. Figure 2A is a schematic diagram of the detection signal of the present invention. Figure 2B is a schematic diagram of the detection signal of the present invention flowing through the security loop.
請參閱第1圖、第2A圖及第2B圖，保全監測裝置100連接保全迴路200，保全監測裝置100包含：訊號產生模組10、訊號偵測模組20及警報模組30。訊號產生模組10輸出偵測訊號S1至保全迴路200，如第2A圖所示，偵測訊號S1切分為複數個時槽T1-T3，此些時槽T1-T3的至少其中之一的偵測訊號S1的波形與其他此些時槽T1-T3的偵測訊號S1的波形不同(例如，偵測訊號S1於時槽T1的波形係與時槽T2或時槽T3不同)。如第2B圖所示，訊號偵測模組20接收流經保全迴路200的偵測訊號S1(於後稱偵測訊號S2)，以比對流經保全迴路200前的偵測訊號S1及流經保全迴路200後的偵測訊號S2的每一對應的此些時槽T1-T3的波形是否相同。訊號偵測模組 20比較出偵測訊號S2與偵測訊號S1不相同時，輸出告警訊號(圖中未顯示)。最後，警報模組30響應告警訊號而輸出警報。Referring to FIG. 1 , FIG. 2A and FIG. 2B , the security monitoring device 100 is connected to the security circuit 200 . The security monitoring device 100 includes a signal generation module 10 , a signal detection module 20 , and an alarm module 30 . The signal generating module 10 outputs the detecting signal S1 to the security circuit 200. As shown in FIG. 2A, the detecting signal S1 is divided into a plurality of time slots T1-T3, at least one of the time slots T1-T3. The waveform of the detection signal S1 is different from the waveform of the detection signal S1 of the other time slots T1-T3 (for example, the waveform of the detection signal S1 in the time slot T1 is different from the time slot T2 or the time slot T3). As shown in FIG. 2B, the signal detecting module 20 receives the detecting signal S1 (hereinafter referred to as the detecting signal S2) flowing through the security circuit 200 to compare the detecting signal S1 flowing through the preserving circuit 200 and flowing through it. Whether the waveforms of each of the corresponding time slots T1-T3 of the detection signal S2 after the protection circuit 200 are the same. Signal detection module 20 When the detection signal S2 is different from the detection signal S1, an alarm signal (not shown) is output. Finally, the alarm module 30 outputs an alarm in response to the alarm signal.
於本實施例中，如第2A圖及第2B圖所示，訊號偵測模組20所接收的偵測訊號S2與訊號產生模組10所輸出的偵測訊號S1完全相同，因而保全監測裝置100判定感知器300之保全狀態為正常。在此，訊號偵測模組20可根據每一時槽比對偵測訊號S1與偵測訊號S2。例如：以偵測訊號S1的時槽T1的波形比對偵測訊號S2的時槽T1的波形；以偵測訊號S1的時槽T2的波形比對偵測訊號S2的時槽T2的波形；及以偵測訊號S1的時槽T3的波形比對偵測訊號S2的時槽T3的波形。In the present embodiment, as shown in FIG. 2A and FIG. 2B, the detection signal S2 received by the signal detection module 20 is identical to the detection signal S1 output by the signal generation module 10, thereby preserving the monitoring device. 100 determines that the state of the sensor 300 is normal. Here, the signal detecting module 20 can compare the detecting signal S1 and the detecting signal S2 according to each time slot. For example, the waveform of the time slot T1 of the detection signal S1 is compared with the waveform of the time slot T1 of the detection signal S2; and the waveform of the time slot T2 of the detection signal S1 is compared with the waveform of the time slot T2 of the detection signal S2; And comparing the waveform of the time slot T3 of the detection signal S1 with the waveform of the time slot T3 of the detection signal S2.
並且，於保全狀態下，訊號產生模組10係持續地輸出不同波形的偵測訊號S1通過感知器300，並訊號偵測模組20逐次地依據流經保全迴路200前的偵測訊號S1比對流經保全迴路200後的偵測訊號S2，以致使偵測訊號S1/S2無法經由拷貝或規律性的測試而遭不法人士的仿製。Moreover, in the security state, the signal generation module 10 continuously outputs the detection signals S1 of different waveforms through the sensor 300, and the signal detection module 20 sequentially compares the detection signals S1 before flowing through the security circuit 200. The detection signal S2 after flowing through the security circuit 200 is such that the detection signal S1/S2 cannot be copied by the unscrupulous person through copying or regular testing.
在一些實施態樣中，本發明之訊號產生模組10所輸出的偵測訊號S1係可對訊號的時槽T1-T3的波形進行類比數位轉換而取得數位值並予以記錄，以致於訊號偵測模組20可比對流經保全迴路200的偵測訊號S2的數位值是否與所記錄之偵測訊號S1的數位值相符而快速的判斷保全迴路200有否遭破壊。In some implementations, the detection signal S1 output by the signal generation module 10 of the present invention can perform analog-to-digital conversion on the waveform of the time slot T1-T3 of the signal to obtain a digital value and record it, so that the signal is detected. The measuring module 20 can compare whether the digital value of the detecting signal S2 flowing through the security circuit 200 matches the digital value of the recorded detecting signal S1 to quickly determine whether the security circuit 200 is broken.
舉例而言，如第2A圖之偵測訊號S1的波形可由脈波訊號PW1-PW3表示不同值的數列，脈波訊號PW1的數值可為(2,1)；脈波訊號PW2的數值可為(1,2)；脈波訊號PW2的數值可為(0,3)；當訊號偵測模組20接收流經保全迴路200的偵測訊號S2(如第2B圖所示)時，即辨識脈波訊號PW4-PW6所表示的數列是否與脈波訊號PW1-PW3相同而判斷保全迴路200有否遭破壊。For example, the waveform of the detection signal S1 in FIG. 2A can be represented by the pulse signals PW1-PW3, and the value of the pulse signal PW1 can be (2, 1); the value of the pulse signal PW2 can be (1, 2); the value of the pulse signal PW2 can be (0, 3); when the signal detection module 20 receives the detection signal S2 flowing through the security circuit 200 (as shown in FIG. 2B), it is recognized Whether the sequence indicated by the pulse signal PW4-PW6 is the same as the pulse signal PW1-PW3 determines whether the security circuit 200 is broken.
在一實施例中，訊號偵測模組20確認偵測訊號S2與偵測訊號S1相同係在於辨識偵測訊號S2與偵測訊號S1的波形的特徵是否相同。換言之，於偵測訊號S1經保全迴路200而傳遞偵測訊號S2至訊號偵測模組20的過程中，偵測訊號S1係可能於迴路的過程中訊號衰減，或者偵測訊號S1係可能經中繼電路(如放大電路)而被放大，然而訊號偵測模組20接收偵測訊號S2進行辨識係依據偵測訊號S2的波形是否變異，而不限於波形的放大或縮小。In one embodiment, the signal detecting module 20 confirms that the detecting signal S2 is the same as the detecting signal S1 in that the characteristics of the waveforms of the detecting signal S2 and the detecting signal S1 are the same. In other words, in the process of transmitting the detection signal S2 to the signal detection module 20 via the security circuit 200, the detection signal S1 may be attenuated during the loop, or the detection signal S1 may be The relay circuit (such as the amplifying circuit) is amplified. However, the signal detecting module 20 receives the detecting signal S2 for identification based on whether the waveform of the detecting signal S2 is variated, and is not limited to the enlargement or reduction of the waveform.
舉例而言，訊號偵測模組20可於接收偵測訊號S2後，進行取得波形的特徵，如波形轉折點間的相對距離、波形的頻率或波形所圍繞的面積等，並比較偵測訊號S2與偵測訊號S1的波形的特徵，若偵測訊號S2與偵測訊號S1的波形的特徵為線性變化則確認偵測訊號S2與偵測訊號S1相同。For example, after receiving the detection signal S2, the signal detecting module 20 can acquire the characteristics of the waveform, such as the relative distance between the turning points of the waveform, the frequency of the waveform or the area surrounded by the waveform, and compare the detecting signal S2. And the characteristic of the waveform of the detection signal S1, if the characteristics of the waveforms of the detection signal S2 and the detection signal S1 are linearly changed, the confirmation detection signal S2 is identical to the detection signal S1.
在一實施例中，保全監測裝置100具有記憶單元(圖中未顯示)，記憶單元記錄訊號產生模組10所持續 輸出的偵測訊號S1，以致使訊號偵測模組20得以依據相對應的偵測訊號S1比對所接收的偵測訊號S2。舉例而言，記憶單元包含偵測訊號S1之資料表，或/及建立偵測訊號S2比對偵測訊號S1之關聯性以確認偵測訊號S2與偵測訊號S1是否相同。其中，上述之資料表可位於資料庫(即記憶單元包含資料庫)，並且可設定資料庫中的參數以建立各偵測訊號S2對照各偵測訊號S1的關聯性，所述關聯性可例如為：識別參數(如：各別的偵測訊號S2之識別參數與各別的偵測訊號S1之識別參數相對應)、預設可允許的延遲時間Dt、取得波形的特徵之方式、以線性變化等確認偵測訊號S2與偵測訊號S1是否為相同波形之方式，或者預設差異參數之方式(如：若偵測訊號S2與偵測訊號S1之差異在所設定之差異參數的範圍內則辨識偵測訊號S2與偵測訊號S1為相同)。In an embodiment, the security monitoring device 100 has a memory unit (not shown), and the memory unit records the signal generating module 10 for continued The detection signal S1 is outputted so that the signal detection module 20 can compare the received detection signal S2 according to the corresponding detection signal S1. For example, the memory unit includes a data table of the detection signal S1, and/or establishes the correlation between the detection signal S2 and the detection signal S1 to confirm whether the detection signal S2 and the detection signal S1 are the same. The data table may be located in the database (ie, the memory unit includes the database), and the parameters in the database may be set to establish the correlation between the detection signals S2 and the detection signals S1, and the correlation may be, for example, For: identification parameters (eg, the identification parameters of the respective detection signals S2 correspond to the identification parameters of the respective detection signals S1), the preset allowable delay time Dt, the manner of obtaining the characteristics of the waveform, and the linearity The manner of confirming whether the detection signal S2 and the detection signal S1 are the same waveform, or the manner of presetting the difference parameter (for example, if the difference between the detection signal S2 and the detection signal S1 is within the range of the difference parameter set Then, the identification detection signal S2 is the same as the detection signal S1.
第3圖為本發明第一實施例之示意圖。第7圖係本發明一實施例之偵測訊號之示意圖。Figure 3 is a schematic view of a first embodiment of the present invention. Figure 7 is a schematic diagram of a detection signal according to an embodiment of the present invention.
請合併參閱第3圖及第7圖，在本發明之第一實施例中，訊號產生模組10可包含脈寬調變產生器11及低通濾波器12；訊號偵測模組20可包含類比數位轉換器21及控制單元22。Referring to FIG. 3 and FIG. 7 , in the first embodiment of the present invention, the signal generating module 10 can include a pulse width modulation generator 11 and a low pass filter 12; the signal detecting module 20 can include The analog to digital converter 21 and the control unit 22.
如第3圖所示，可經由脈寬調變產生器11產生偵測訊號S11，如第7圖所示，偵測訊號S11可切分為多個時槽T1-T5，對應於時槽T1-T5的脈波訊號PW7-PW11可具有不同寬度的脈波。如第3圖所示，低通濾波器12接 收偵測訊號S11，低通濾波器12對脈波訊號PW7-PW11進行低通濾波而輸出偵測訊號S1至保全迴路200。其中，脈波訊號PW7-PW11經過低通濾波器12濾波後，偵測訊號S11會成為曲線較為平滑的偵測訊號S1。As shown in FIG. 3, the detection signal S11 can be generated by the pulse width modulation generator 11. As shown in FIG. 7, the detection signal S11 can be divided into a plurality of time slots T1-T5 corresponding to the time slot T1. The pulse signal PW7-PW11 of -T5 can have pulse waves of different widths. As shown in Figure 3, the low pass filter 12 is connected The detection signal S11 is received, and the low-pass filter 12 performs low-pass filtering on the pulse signals PW7-PW11 to output the detection signal S1 to the preservation circuit 200. After the pulse signal PW7-PW11 is filtered by the low-pass filter 12, the detection signal S11 becomes a smoother detection signal S1.
當訊號偵測模組20接收流經保全迴路200的偵測訊號S2後，以類比數位轉換器21轉換偵測訊號S2，以致於將偵測訊號S2的波形量化為偵測訊號S21，而得以比對偵測訊號S21的每一時槽T1-T5的波形與偵測訊號S11是否相同；或者，訊號偵測模組20可比對偵測訊號S21的每一時槽T1-T5的波形的數位值是否與所記錄之偵測訊號S11的數位值相符而有效率並正確地判斷保全迴路200有否遭破壊。After the signal detection module 20 receives the detection signal S2 flowing through the security circuit 200, the analog signal converter 21 converts the detection signal S2 so that the waveform of the detection signal S2 is quantized into the detection signal S21. Whether the waveform of each time slot T1-T5 of the comparison detection signal S21 is the same as the detection signal S11; or, the signal detection module 20 can compare the digit value of the waveform of each time slot T1-T5 of the detection signal S21. Corresponding to the digit value of the recorded detection signal S11, it is efficient and correct to determine whether the security circuit 200 has been broken.
第4圖為本發明第一實施例之另一實施態樣之示意圖。請合併參閱第4圖及第7圖，相較於第3圖，訊號產生模組10更可包含運算單元14，運算單元14產生任意波形並輸入脈寬調變產生器11而輸出脈波訊號PW7-PW11。其中，運算單元14可以依時間調整任意波形的週期或頻率等，以致使任意波形依時間的改變而於每一時槽T1-T5中呈現不相同的波形。Figure 4 is a schematic view showing another embodiment of the first embodiment of the present invention. Referring to FIG. 4 and FIG. 7 , the signal generation module 10 further includes an operation unit 14 . The operation unit 14 generates an arbitrary waveform and inputs the pulse width modulation generator 11 to output a pulse wave signal. PW7-PW11. The operation unit 14 can adjust the period or frequency of the arbitrary waveform according to time, so that the arbitrary waveforms exhibit different waveforms in each time slot T1-T5 according to the change of time.
舉例而言，如第7圖所示，運算單元14可調整偵測訊號S1時槽T1的波形的振幅後產生偵測訊號S1時槽T2的波形，即脈波訊號PW7與脈波訊號PW8於縱軸上具有高度差；於調整偵測訊號S1時槽T2的波形的相位後產生偵測訊號S1時槽T3的波形，即脈波訊號PW9與脈 波訊號PW8之相位相反。然本發明不以此為限，運算單元14可調整任意波形而使各脈波訊號之間具有相位差。For example, as shown in FIG. 7, the arithmetic unit 14 can adjust the amplitude of the waveform of the slot T1 when detecting the signal S1, and then generate the waveform of the slot T2 of the detecting signal S1, that is, the pulse signal PW7 and the pulse signal PW8. The vertical axis has a height difference; after adjusting the phase of the waveform of the slot T2 when the detection signal S1 is adjusted, the waveform of the slot T3 when the detection signal S1 is generated, that is, the pulse signal PW9 and the pulse is generated. The phase of the wave signal PW8 is opposite. However, the present invention is not limited thereto, and the arithmetic unit 14 can adjust an arbitrary waveform to have a phase difference between the pulse signals.
或者，運算單元14以不同的時間產生任意波形，以致使每一時槽T1-T5依據任意波形呈現不相同的波形，其中任意波形如：直流波、弦波、三角波、方波、脈波或諧波等。Alternatively, the arithmetic unit 14 generates arbitrary waveforms at different times so that each time slot T1-T5 exhibits a different waveform according to an arbitrary waveform, such as a DC wave, a sine wave, a triangular wave, a square wave, a pulse wave or a harmonic. Wave and so on.
舉例而言，如第7圖所示，於偵測訊號S1時槽T4，運算單元14可輸出弦波並輸入脈寬調變產生器11而輸出脈波訊號PW10，其中脈波訊號PW10的脈波與脈波之間的寬度是由脈寬調變產生器11的頻率決定。也就是說，若脈寬調變產生器11的頻率愈高，則所形成的脈波訊號PW10就愈接近原本的弦波，脈波訊號PW10的脈波與脈波之間的寬度就愈小。反之，若脈寬調變產生器11的頻率愈低，則脈波訊號PW10的脈波與脈波之間的寬度就愈寬。For example, as shown in FIG. 7, in the detecting signal S1 slot T4, the arithmetic unit 14 can output a sine wave and input the pulse width modulation generator 11 to output a pulse signal PW10, wherein the pulse signal PW10 is pulsed. The width between the wave and the pulse wave is determined by the frequency of the pulse width modulation generator 11. That is to say, if the frequency of the pulse width modulation generator 11 is higher, the pulse signal PW10 formed is closer to the original sine wave, and the width between the pulse wave and the pulse wave of the pulse signal PW10 is smaller. . On the other hand, if the frequency of the pulse width modulation generator 11 is lower, the width between the pulse wave and the pulse wave of the pulse wave signal PW10 is wider.
第5圖為本發明第二實施例之示意圖。請合併參閱第5圖及第7圖，在第二實施例中，訊號產生模組10可包含脈寬調變產生器11及數位類比轉換器13；訊號偵測模組20可包含類比數位轉換器21及控制單元22。Figure 5 is a schematic view of a second embodiment of the present invention. Please refer to FIG. 5 and FIG. 7 in combination. In the second embodiment, the signal generating module 10 can include a pulse width modulation generator 11 and a digital analog converter 13; the signal detecting module 20 can include analog digital conversion. The controller 21 and the control unit 22.
訊號產生模組10可經由脈寬調變產生器11產生偵測訊號S12，如第7圖所示，偵測訊號S12可切分為多個時槽T1-T5，對應於時槽T1-T5的脈波訊號PW7-PW11可具有不同寬度的脈波。如第5圖所示，數位類比轉換器13接收偵測訊號S12，數位類比轉換器13將脈波訊號 PW7-PW11轉換為類比訊號而輸出偵測訊號S1至保全迴路200。The signal generating module 10 can generate the detecting signal S12 via the pulse width modulation generator 11. As shown in FIG. 7, the detecting signal S12 can be divided into a plurality of time slots T1-T5, corresponding to the time slot T1-T5. The pulse signal PW7-PW11 can have pulse waves of different widths. As shown in FIG. 5, the digital analog converter 13 receives the detection signal S12, and the digital analog converter 13 transmits the pulse signal. The PW7-PW11 converts to an analog signal and outputs a detection signal S1 to the security circuit 200.
當訊號偵測模組20接收流經保全迴路200的偵測訊號S2後，以類比數位轉換器21轉換偵測訊號S2，以致於將偵測訊號S2的波形量化為偵測訊號S22，而得以比對偵測訊號S22的每一時槽T1-T5的波形與偵測訊號S12是否相同；或者，訊號偵測模組20可比對偵測訊號S22的每一時槽T1-T5的波形的數位值是否與所記錄之偵測訊號S12的數位值相符而有效率並正確地判斷保全迴路200有否遭破壊。After the signal detection module 20 receives the detection signal S2 flowing through the security circuit 200, the analog signal converter 21 converts the detection signal S2 so that the waveform of the detection signal S2 is quantized into the detection signal S22. Whether the waveform of each time slot T1-T5 of the comparison detection signal S22 is the same as the detection signal S12; or, the signal detection module 20 can compare the digit value of the waveform of each time slot T1-T5 of the detection signal S22. Corresponding to the digit value of the recorded detection signal S12, it is efficient and correct to determine whether the security circuit 200 is broken.
第6圖為本發明第二實施例之另一實施態樣之示意圖。請合併參閱第6圖及第7圖，相似於第一實施例，第二實施例之訊號產生模組10也可包含運算單元14，運算單元14運算數位編碼並輸入脈寬調變產生器11而輸出脈波訊號PW7-PW11。其中，數位編碼可為經加密之編碼(Code)、通訊協定(Potocol)碼或瞬間電壓差變化(△V/△t)，如電壓變化率、電壓均值或/及電壓變異值。Figure 6 is a schematic view showing another embodiment of the second embodiment of the present invention. Referring to FIG. 6 and FIG. 7 , similar to the first embodiment, the signal generating module 10 of the second embodiment may also include an arithmetic unit 14 that operates the digital code and inputs the pulse width modulation generator 11 . The pulse signal PW7-PW11 is output. The digital code may be an encrypted code, a protocol code or a transient voltage difference change (ΔV/Δt), such as a voltage change rate, a voltage mean value, and/or a voltage variation value.
舉例而言，如第7圖所示，於偵測訊號S1時槽T5，運算單元14可依二進制輸出二位元碼{0101}而輸出脈波訊號PW11。其中，脈波訊號PW11所代表的數位值為「5」。然本發明不以此為限，運算單元14可以八進制、十六進制或ASCII等，如ASCII的{0x41}所代表的數位值為「A」。於此，數位編碼之用意即是以數位值輸入脈寬調變產生器11而輸出脈波訊號。For example, as shown in FIG. 7, in the detecting signal S1 slot T5, the arithmetic unit 14 can output the pulse signal PW11 according to the binary output binary code {0101}. The digit value represented by the pulse signal PW11 is "5". However, the present invention is not limited thereto, and the arithmetic unit 14 may be octal, hexadecimal, or ASCII, etc., and the digit value represented by {0x41} of ASCII is "A". Here, the digital code is intended to input the pulse wave signal by inputting the pulse width modulation generator 11 with a digital value.
於本發明的實施例中，當偵測訊號S1與偵測訊號S2全部或部分不同時，可視為保全迴路200遭到破壊。如第7圖所示，當訊號偵測模組20比對偵測訊號S21/S22的時槽T3(即脈波訊號PW14)與偵測訊號S11/S12的時槽T3(即脈波訊號PW9)不相同時，保全監測裝置100由正常保全狀態進入保全系統異常處理程序。在保全系統異常處理程序中，訊號偵測模組20輸出告警訊號至警報模組30，以由警報模組30輸出警報(如通知保全管制中心、發出警告聲響或啟動監視等)。In the embodiment of the present invention, when the detection signal S1 is different from the detection signal S2 in whole or in part, it may be considered that the security circuit 200 is broken. As shown in FIG. 7, when the signal detecting module 20 compares the time slot T3 of the detecting signal S21/S22 (ie, the pulse signal PW14) and the time slot T3 of the detecting signal S11/S12 (ie, the pulse signal PW9) When not the same, the security monitoring device 100 enters the security system exception handling procedure from the normal security state. In the security system exception handling procedure, the signal detection module 20 outputs an alarm signal to the alarm module 30 to output an alarm (such as notifying the security control center, issuing a warning sound, or initiating monitoring, etc.) by the alarm module 30.
在一些實施態樣中，如第7圖所示，保全監測裝置100係預設有可允許的延遲時間Dt，若訊號產生模組10輸出偵測訊號S1後直至訊號偵測模組20接收到偵測訊號S2的期間小於延遲時間Dt，則保全監測裝置100判定感知器300之保全狀態為正常。若訊號偵測模組20的偵測訊號S2超過延遲時間Dt未回到保全監測裝置100(可能過度延遲或遺失)，則保全監測裝置100由正常保全狀態進入保全系統異常處理程序，並且訊號偵測模組20輸出告警訊號至警報模組30以輸出警報。In some implementations, as shown in FIG. 7, the security monitoring device 100 is pre-configured with an allowable delay time Dt. After the signal generation module 10 outputs the detection signal S1 until the signal detection module 20 receives When the period of the detection signal S2 is less than the delay time Dt, the security monitoring device 100 determines that the security state of the sensor 300 is normal. If the detection signal S2 of the signal detection module 20 does not return to the security monitoring device 100 (possibly excessive delay or loss), the security monitoring device 100 enters the security system exception processing program from the normal security state, and the signal detection The test module 20 outputs an alarm signal to the alarm module 30 to output an alarm.
在此，參照第一實施例之第4圖及第二實施例之第6圖，保全監測裝置100可包含輸出放大電路15及接收放大電路。輸出放大電路15連接於保全迴路200與訊號產生模組10之間。接收放大電路23連接於保全迴路200與類比數位轉換器21之間。Here, referring to FIG. 4 of the first embodiment and FIG. 6 of the second embodiment, the security monitoring device 100 may include an output amplifying circuit 15 and a receiving amplifying circuit. The output amplifying circuit 15 is connected between the preserving circuit 200 and the signal generating module 10. The reception amplifying circuit 23 is connected between the preserving circuit 200 and the analog digital converter 21.
輸出放大電路15用以放大訊號產生模組10輸 出的偵測訊號S1，並輸出經放大的偵測訊號S1’至保全迴路200。其中，保全監測裝置100以輸出放大電路15驅動偵測訊號S1，並得以經放大的偵測訊號S1’於保全迴路200中傳送至感知器300，而使偵測訊號S1不致於因迴路中的衰減而導致消失或波形變異，進而經放大的偵測訊號S1’通過感知器300後得以偵測訊號S2回到保全監測裝置100。The output amplifying circuit 15 is configured to amplify the signal generating module 10 The detection signal S1 is output, and the amplified detection signal S1' is output to the security circuit 200. The security monitoring device 100 drives the detection signal S1 by the output amplification circuit 15 and transmits the amplified detection signal S1' to the sensor 300 in the security circuit 200, so that the detection signal S1 is not caused by the loop. The attenuation causes the disappearance or the waveform variation, and the amplified detection signal S1' passes through the sensor 300 to detect the signal S2 and returns to the security monitoring device 100.
接收放大電路23接收流經保全迴路200的偵測訊號S2，並放大為偵測訊號S2’。其中，接收放大電路23將偵測訊號S2放大，而得以利於類比數位轉換器21量化經放大之偵測訊號S2’而不致於偵測訊號S2因迴路中的衰減而訊號變弱，導致波形的轉折點不明顯(即波形過於緩和)而量化錯誤。The receiving amplifying circuit 23 receives the detecting signal S2 flowing through the preserving circuit 200 and amplifies it into the detecting signal S2'. The receiving amplifier circuit 23 amplifies the detecting signal S2, so that the analog digital converter 21 can quantize the amplified detecting signal S2' without the signal S2 being weakened due to the attenuation in the loop, resulting in a waveform. The turning point is not obvious (that is, the waveform is too moderate) and the quantization error.
因此，若保全狀態為正常的情況下，偵測訊號S1與經放大的偵測訊號S1’、通過感知器300的偵測訊號S2及偵測訊號S2’的波形的特徵為相同。Therefore, if the security state is normal, the characteristics of the waveforms of the detection signal S1 and the amplified detection signal S1', the detection signal S2 of the sensor 300, and the detection signal S2' are the same.
在一些實施態樣中，偵測訊號S1的時槽T1-T5的波形可由低通濾波器(如第一實施例)產生；偵測訊號S1的時槽T1-T5的波形可由數位類比轉換器(如第二實施例)產生；或者，偵測訊號S1的時槽T1-T5的波形可部分由低通濾波器(如第一實施例)，及部分由數位類比轉換器(如第二實施例)產生。In some implementations, the waveform of the time slot T1-T5 of the detection signal S1 may be generated by a low-pass filter (such as the first embodiment); the waveform of the time slot T1-T5 of the detection signal S1 may be a digital analog converter. (as in the second embodiment) is generated; or, the waveform of the time slot T1-T5 of the detection signal S1 may be partially by a low-pass filter (as in the first embodiment), and partly by a digital analog converter (such as the second implementation) Example).
在一些實施態樣中，保全監測裝置100還具有電位檢知單元(圖中未顯示)。電位檢知單元可經由電阻、 電流或/及電壓的特性而檢知電位。In some implementations, the security monitoring device 100 also has a potential detection unit (not shown). The potential detection unit can be via a resistor, The potential is detected by the characteristics of current or/and voltage.
雖前述係將偵測訊號以電壓訊號為例，然本發明非以此為限，在一些實施態樣中，偵測訊號可為電流訊號。Although the foregoing method uses a voltage signal as an example, the present invention is not limited thereto. In some implementations, the detection signal may be a current signal.
第8圖本發明另一實施例之保全監測系統之方塊示意圖。Figure 8 is a block diagram of a security monitoring system in accordance with another embodiment of the present invention.
請參閱第8圖，保全監測系統1還具有多工器400，並複數個感知器301-308連接保全監測裝置100，每一感知器301-308分別具有對應之偵測訊號S1及流經保全迴路200的偵測訊號S2。多工器400連接於保全迴路200與保全監測裝置100之間，多工器400以時間間隔選擇每一感知器301-308，訊號偵測模組20對應時間間隔比對每一感知器301-308所相應之偵測訊號S1及流經保全迴路的偵測訊號S2。舉例而言，保全監測裝置100可建立對應每一感知器301-308的偵測訊號S1之資料表，及經多工器400依序或隨機對每一感知器301-308發送偵測訊號S1，並訊號偵測模組20依據資料表而得以將所接收的偵測訊號S2與相對應的偵測訊號S1作辨識。Referring to FIG. 8, the security monitoring system 1 further has a multiplexer 400, and a plurality of sensors 301-308 are connected to the security monitoring device 100. Each of the sensors 301-308 has a corresponding detection signal S1 and a flow through security. The detection signal S2 of the loop 200. The multiplexer 400 is connected between the security circuit 200 and the security monitoring device 100. The multiplexer 400 selects each of the sensors 301-308 at intervals, and the signal detection module 20 compares each sensor 301 with a time interval. The corresponding detection signal S1 of 308 and the detection signal S2 flowing through the security loop. For example, the security monitoring device 100 can establish a data table corresponding to the detection signal S1 of each of the sensors 301-308, and send the detection signal S1 to each of the sensors 301-308 sequentially or randomly via the multiplexer 400. And the signal detecting module 20 can identify the received detecting signal S2 and the corresponding detecting signal S1 according to the data table.
在一些實施態樣中，訊號產生模組20輸出感知器301-308其中之一所相應之偵測訊號S1與感知器301-308其中另一所相應之偵測訊號S1不同。舉例而言，感知器301之偵測訊號S1可如第2A圖所示，而感知器308之偵測訊號S1可如第7圖。也就是說，訊號產生模組10輸出各感知器301-308所相應之偵測訊號S1可不同波形， 其中各偵測訊號S1的時槽數目亦可不同。In some implementations, the signal generating module 20 outputs one of the sensors 301-308 corresponding to the detecting signal S1 and the other sensing signals S1 of the sensors 301-308. For example, the detection signal S1 of the sensor 301 can be as shown in FIG. 2A, and the detection signal S1 of the sensor 308 can be as shown in FIG. In other words, the signal generating module 10 outputs different detection signals corresponding to the sensing signals S1 of the respective sensors 301-308. The number of time slots of each detection signal S1 may also be different.
在一些實施態樣中，多工器400可以內嵌式整合於保全監測裝置100。In some implementations, the multiplexer 400 can be embedded in the security monitoring device 100 in-line.
本發明之實施例之保全監測系統利用保全監測裝置產生並識別偵測訊號以偵測保全迴路是否被破壊。其中，偵測訊號具複數個分時的時槽，並且於此些分時的時槽中以不同的調變方式呈現不同的波形，且於保全狀態下，訊號產生模組係持續地輸出不相同的偵測訊號，並訊號偵測模組可以逐次地辨識流經保全迴路的偵測訊號是否變異，以致使偵測訊號無法經由拷貝或規律性的測試而遭不法人士的仿製，而得以有效地保持保全迴路之正確性，及提升保全防護之安全性。The security monitoring system of the embodiment of the present invention uses the security monitoring device to generate and identify the detection signal to detect whether the security circuit is broken. The detection signal has a plurality of time-division time slots, and different waveforms are presented in different time-varying time slots, and in the security state, the signal generation module continuously outputs no The same detection signal and the signal detection module can identify whether the detection signal flowing through the security circuit is mutated one by one, so that the detection signal cannot be copied by the lawless person through copying or regular testing, and is effective. The ground maintains the correctness of the safety circuit and enhances the safety of the protection.
雖然本發明的技術內容已經以較佳實施例揭露如上，然其並非用以限定本發明，任何熟習此技藝者，在不脫離本發明之精神所作些許之更動與潤飾，皆應涵蓋於本發明的範疇內，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。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.
1‧‧‧保全監測系統1‧‧‧Security monitoring system
100‧‧‧保全監測裝置100‧‧‧Security monitoring device
10‧‧‧訊號產生模組10‧‧‧Signal Generation Module
20‧‧‧訊號偵測模組20‧‧‧Signal Detection Module
30‧‧‧警報模組30‧‧‧Alarm module
200‧‧‧保全迴路200‧‧‧Safety loop
300‧‧‧感知器300‧‧‧ Sensor
S1/S2‧‧‧偵測訊號S1/S2‧‧‧ detection signal
Claims (10)
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| TW102134606A TWI494902B (en) | 2013-09-25 | 2013-09-25 | Security monitoring apparatus and system thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0902932B1 (en) * | 1996-06-06 | 2004-07-28 | Sensormatic Electronics Corporation | Electronic article surveillance system with cancellation of interference signals |
| US7405658B2 (en) * | 1999-09-27 | 2008-07-29 | Time Domain Corp. | System and method for monitoring assets, objects, people and animals utilizing impulse radio |
| TW201003081A (en) * | 2008-05-09 | 2010-01-16 | Panasonic Elec Works Co Ltd | Sensor device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0902932B1 (en) * | 1996-06-06 | 2004-07-28 | Sensormatic Electronics Corporation | Electronic article surveillance system with cancellation of interference signals |
| US7405658B2 (en) * | 1999-09-27 | 2008-07-29 | Time Domain Corp. | System and method for monitoring assets, objects, people and animals utilizing impulse radio |
| TW201003081A (en) * | 2008-05-09 | 2010-01-16 | Panasonic Elec Works Co Ltd | Sensor device |
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