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1. 发明专利

JPS63144704A RELAY DC DRIVING CIRCUIT 失效
公开(公告)号：JPS63144704A
公开(公告)日：1988-06-16
申请号：JP29011486
申请日：1986-12-05
申请人： RAILWAY TECHNICAL RES INST , NIPPON TETSUDO KENSETSU KODAN , NIPPON SIGNAL CO LTD
发明人： SAKON TADAYOSHI , KATO YUJI , YOKOTA YOSHINAO , KAMOSHITA CHUHEI , INOUE KOJI
IPC分类号： H01H47/24 , B60L15/40 , B61L23/00 , H01H47/00 , H01H47/32
摘要： PURPOSE:To achieve a fall-safe of relay driving circuit only with DC signal by connecting first and second switching elements switched and controlled through first and second control signals with both ends of an output relay. CONSTITUTION:When DC control signals S1, S2 are applied to input terminals 9, 10, photo-couplers 11, 12 respectively emit light and transistors 3, 4 are turned ON. For this purpose, DC current flows in the order of a power terminal 1, a transistor 3, an output relay 7, a transistor 4 and a power terminal 2 so that the output relay 7 operates. On the other hand, when DC control signals S1, S2 are not given or only one of them is applied, the output relay 7 does not operate. Also, when the state of a sensor 8 connected between output terminals of the transistors 3, 4 and the DC control signals S1, S2 is monitored, a failure in a circuit can be detected.

2. 发明专利

JPS62118417A CLOCK SYNCHRONIZING CIRCUIT 失效
公开(公告)号：JPS62118417A
公开(公告)日：1987-05-29
申请号：JP25958985
申请日：1985-11-19
申请人： NIPPON SIGNAL CO LTD
发明人： KAMOSHITA CHUHEI
IPC分类号： G06F1/04 , G06F1/12
摘要： PURPOSE:To execute automatically the correction even when the frequency dividing clock of respective systems causes the phase shift by stopping the supplying of the original clock to a microprocessor in which the phase dislocation occurs until the same phase condition is obtained. CONSTITUTION:When the phase shift occurs at the frequency dividing clock of microprocessors 1 and 2, a phase comparing circuit 4 outputs the constant voltage of the time width inproportion to the phase dislocation. An integrating circuit 5 integrates the output of the comparing circuit 4, and when the integrating output exceeds the constant threshold, a comparator 6 detects this and detects the occurrence of the phase shift. A phase correcting means 7 receives the output of the comparator 6, and stops the supplying of the original clock from an original clock oscillating circuit 3 to the microprocessor to correct the phase dislocation until the same phase condition is obtained. Thus, the phase shift of the frequency dividing clock is automatically corrected.

3. 发明专利

JPH02272369A FAULT DETECTOR FOR ARRESTER 失效
公开(公告)号：JPH02272369A
公开(公告)日：1990-11-07
申请号：JP9469489
申请日：1989-04-14
申请人： NIPPON SIGNAL CO LTD
发明人： SHIOZAWA KAZUO , KAMOSHITA CHUHEI
IPC分类号： G01R31/00
摘要： PURPOSE:To prevent a malfunction of control device by detecting an electric potential at a middle point of junction for voltage limiting elements and current limiting element and detecting the fault of an arrester from the change of the detected value. CONSTITUTION:The change of the potential at the middle point of junction for the voltage limiting elements 3a, 3b and the current limiting element 4 is monitored by a detector 5 and when the current limiting element 4 is broken down in short-circuit mode, the potential is lowered down to approximately zero thereby the fault of the arrester 2 is detected. With this arrangement, the fault of the arrester 2 can be easily detected and this arrester 2 can be rapidly replaced with a normal one; therefore, the malfunction of the control device can be efficiently prevented.

4. 发明专利

JPH0222471B2 失效
公开(公告)号：JPH0222471B2
公开(公告)日：1990-05-18
申请号：JP12803481
申请日：1981-08-14
申请人： NIPPON SIGNAL CO LTD
发明人： KAMOSHITA CHUHEI
IPC分类号： G11C11/406 , G11C7/22

5. 发明专利

JPH0139304B2 失效
公开(公告)号：JPH0139304B2
公开(公告)日：1989-08-21
申请号：JP21237282
申请日：1982-12-03
申请人： NIPPON SIGNAL CO LTD
发明人： TASHIRO SHIGEYUKI , KAMOSHITA CHUHEI , YAMAMOTO MASANORI
IPC分类号： H02J1/00 , G06F1/26 , H02H7/12 , H02M3/00

6. 发明专利

JPS63142914A RELAY CONTACT INPUT CIRCUIT 失效
公开(公告)号：JPS63142914A
公开(公告)日：1988-06-15
申请号：JP29011586
申请日：1986-12-05
申请人： RAILWAY TECHNICAL RES INST , NIPPON TETSUDO KENSETSU KODAN , NIPPON SIGNAL CO LTD
发明人： SAKON TADAYOSHI , KATO YUJI , YOKOTA YOSHINAO , KAMOSHITA CHUHEI , INOUE KOJI
IPC分类号： B60L3/08 , H03K17/00
摘要： PURPOSE:To offer a fail safe collation pulse type input circuit of multiple constitution by providing a photocoupler switched by an N collation pulse given to a contact N at the operating position of a relay, a photocoupler whose conduction is switched by an R collation pulse given to a contact at the position of restoration and a sensor sensing the conducting state of the photocouplers. CONSTITUTION:In applying the N, R collation pulses respectively to transistors 7, 8, photo TRs 4a, 4b are conducted respectively and their conducting state is sensed by a sensor 3. When the output of the sensor 3 changes from '1' to '0', it represents the operating position contact N is active and when the output changes from '0' to '1', it depicts that the restorating position contact R is active. If the sensor output changes differently from the above, it shows that a fault takes place in the input circuit. Thus, a fault in the input circuit as well as the information input is sensed by monitoring the sensor output appearing at contact information input terminal 9. Moreover, even when the operating position contact N and the restoration position contact R of the relay are connected in parallel with other system, since the pulses of its own system are not bypassed to the other system, the constitution of a multiple system is attained.

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