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    • 22. 发明专利
    • GATE CONTROLLING METHOD
    • JPS61235914A
    • 1986-10-21
    • JP7668485
    • 1985-04-12
    • HITACHI LTD
    • HATA TOSHIOSUZUKI MASAYOSHI
    • G05D9/12
    • PURPOSE:To improve the accuracy of a flow rate by decreasing the number of object gates which are operated at the same time and by the same opening, by one gate each, determining automatically the number of gates in which an error range against a target water discharge quantity is the smallest, and also no minute opening is generated, and a target opening, and executing a gate control. CONSTITUTION:A total target water discharge quantity SIGMAQ from a gate is determined by a method prescribed in advance from the present stored water level H, n=N and Q=SIGMAQ are set and a target water discharge quantity Q1 per one gate is derived, and based on this Q1 and the stored water level H, a target opening P to the target water discharge quantity Q1 is derived from a polygonal line approximate calculation of H-P-Q. The target opening P is a real number and made an integer P' by bringing it to a fractional processing so as to become 1cm unit, compared with a minute opening K, and in case of P'>K, the gate is controlled. From the polygonal line approximate calculation of H-P-Q, a water discharge quantity Q1' to the target opening P' is derived, and Q1'=Q/n=SIGMAQ/N is set, but in case there is the gate which is excluded in the checking process, a value divided a value Q=Q-Qi obtained by subtracting the present water discharge quantity Qi from the excluded gate, by n=n-1 gate becomes a target water discharge quantity Q1' per one control object gate.
    • 23. 发明专利
    • PULSE GENERATING CIRCUIT
    • JPS61234120A
    • 1986-10-18
    • JP7428485
    • 1985-04-10
    • HITACHI LTD
    • IZAKI NAOYUKISUZUKI MASAYOSHISAGAWA AKIO
    • H03K5/02H03K17/60
    • PURPOSE:To prevent a flowing-in current at a transient time and eliminate any delay time, by inserting an inductance or resistance between two current sources connected in series and leading out an output terminal from the connecting point of a source DC source with the inductance or resistance. CONSTITUTION:When input signals change their level from '0' to '1', a current source 20 operates and another current source 30 through an inverter 11 stops its operations. An electric current I20 produced at this transient period tends to flow to the current source 30, but is made to flow to a load side having a lower impedance by means of a preventing circuit 16 and raises the potential V0 of the load connected with an output terminal 12 without delay. When the potential V0 becomes VSS (V0=VSS), the potential at both ends of the current source 20 becomes the same and the current source 20 is set to a standby state. When the input signals C are switched to '0' level thereafter, the current source 30 is controlled with a prescribed current value and no transient large current is made to flow and, moreover, since the impedance at the time of operation is higher than the preventing circuit 16, the electric current which is pulled out from the load at the time of discharge can be prevented.
    • 24. 发明专利
    • TESTING OF SEMICONDUCTOR ELEMENT
    • JPS61212776A
    • 1986-09-20
    • JP5230085
    • 1985-03-18
    • HITACHI LTD
    • SUZUKI MASAYOSHIOWADA JUNICHIKITAJIMA MASAAKIKAWAKAMI HIDEAKI
    • G01R31/26G02F1/13G02F1/136G02F1/1368G09G3/36H01L29/786
    • PURPOSE:To enable testing even when one of main terminals of a semiconductor element is insulated electrically, by applying a lamp voltage to one of the main terminals of the semiconductor element through a dielectric and a signal for controlling the conduction or non-conduction to a control terminal thereof to detect a displacement current flowing through at least one of the main terminals and the control terminal. CONSTITUTION:In a transistor TR1, a source terminal 3 of one main terminal at a gate terminal 4 of a control terminal is led out while a drain terminal of the other main terminal is opened on a device as indicated by 2A. A lamp voltage VDS is applied to a terminal 7 from a lamp voltage generator 8 to make a electrically closed circuit through an electrostatic capacitance near the drain terminal. With such an arrangement, while the voltage VDS is rising, a displacement current flows to the TR1 from the terminal 7 by electrostatic induction to form a circuit with a generator 8, the terminal 7, the TR1 and the terminal 3, creating a closed state. When a voltage VG is applied to the terminal 4 while the voltage VDS is rising, the TR1 is turned ON from OFF to cause a change in the current iS. Determination of this change enables testing for ON-OFF and amplification actions of the TR1.
    • 26. 发明专利
    • CONTROL METHOD OF WATER PIPELINE NETWORK
    • JPS6049411A
    • 1985-03-18
    • JP15888383
    • 1983-08-30
    • HITACHI LTD
    • SUZUKI MASAYOSHI
    • E03B5/00G05D7/06G05D16/00
    • PURPOSE:To cope with the emergent demand for water by increasing the opening degree of a control valve to a prescribed level in case the control system of the control valve has a fault or a service interruption occurs to the drive power supply of the control valve. CONSTITUTION:A fault detecting circuit 39 of a slave station 30 detects a fault of the control system of a control valve 4 covering a master station 21, a transmission circuit 7 and the station 30. A control valve control circuit 35 to which a fault detection signal is applied delivers a full-open command of the valve 4 or a command for a prescribed opening degree to a drive motor 4A of the valve 4. A power supply device 40 which is free from service interruption containing a battery is set in parallel to the service interruption of a drive power supply 13 of the valve 4. The circuit 35 delivers the full-open command of the valve 4 or the command for a prescribed opening degree to the motor 4A by a service interruption detecting signal given from a service interruption detecting circuit 41. In this way, a countermeasure to the emergent demand for water is ensured.
    • 28. 发明专利
    • Checking method of data update
    • 检查数据更新方法
    • JPS59127444A
    • 1984-07-23
    • JP218683
    • 1983-01-12
    • Hitachi Ltd
    • TSUCHIYA MINORUSUZUKI MASAYOSHI
    • H04L1/00G08C25/00H04Q9/14
    • G08C25/00
    • PURPOSE:To secure the abnormality detection of data update by judging the abnormality of data update that data is not updated when the same bit signal succeeds in a centralized monitor and control system. CONSTITUTION:A data update check signal generator 14-1 is installed in a distributing reservoir 3-1 and their outputs are assigned to data update monitor bits. A centralized monitor and control center 1 outputs the signal from the master station 5-1 of a telecontrol telemeter II and it is transmitted while assigned to data update monitor bits of the reverse transmission telemeter TMI of the master station 5 of a telecontrol telemeter I . The slave station 6 of the telecontrol telemeter I of a purification plant 2 sends the signal to a data update abnormality checking circuit 15, and when the inspection result indicates abnormality, the signal is outputted to the protecting circuit 17 of a pump control board 7-1 to interlock the control.
    • 目的:通过在集中式监控系统中相同比特信号成功的判断数据更新异常情况下,确保数据更新异常检测不被更新。 构成:数据更新检查信号发生器14-1安装在分配储存器3-1中,并且其输出被分配给数据更新监视器位。 集中式监视和控制中心1输出遥控遥测仪II的主站5-1的信号,并将其分配给远程遥测仪I的主站5的反向传输遥测仪TMI的数据更新监视位。 净化设备2的遥控遥测仪I的从站6将信号发送到数据更新异常检查电路15,并且当检查结果指示异常时,该信号被输出到泵控制板7的保护电路17, 1互锁控制。
    • 29. 发明专利
    • Ink jet printer
    • 喷墨打印机
    • JPS5942965A
    • 1984-03-09
    • JP15336782
    • 1982-09-04
    • Hitachi Koki Co LtdHitachi Ltd
    • SUZUKI MASAYOSHIIZAKI NAOYUKI
    • B41J2/045B41J2/055
    • B41J2/04541B41J2/04581B41J2/04588B41J2/04591B41J2/04593
    • PURPOSE:To regulate the flying state of ink droplets jetted from nozzles by a simplified circuit system in which a regulating means to adjust the rise time and duration time of pulse voltage is provided to a pulse voltage generation means. CONSTITUTION:Under the condition that voltage is applied to the terminal 31 of power source and a control voltage corresponding to the signal of reference density picture information is applied to a control voltage terminal 41d, a variable resistance 14b is regulated so that a reference size of ink droplets are jetted from nozzles, to set up the duration time of pulse voltage to be applied to a piezo-electric element 2. Each time the nozzle of a nozzle head is faced the picture element position, a sychronous signal is given to the input interminal 13 to trigger an one-shot multi-circuit 14, and a control voltage to be applied to the control voltage terminal 14d is varied according to density information from the picture information signal generation circuit 26. Whereupon, the size of ink droplets from the nozzles is varied to enable the size of recording dots to be altered.
    • 目的:通过简化的电路系统调节从喷嘴喷射的墨滴的飞行状态,其中调节装置将脉冲电压的上升时间和持续时间调节到脉冲电压产生装置。 构成:在电源端子31施加电压,将与参考密度图像信息对应的控制电压施加到控制电压端子41d的条件下,对可变电阻14b进行调整, 从喷嘴喷射墨滴,以建立施加到压电元件2的脉冲电压的持续时间。每当喷嘴头的喷嘴面对像素位置时,向输入端提供同步信号 中间电极13触发单触发多路电路14,并且施加到控制电压端子14d的控制电压根据来自图像信息信号产生电路26的浓度信息而变化。因此,来自 改变喷嘴以使得能够改变记录点的尺寸。
    • 30. 发明专利
    • Gate controlling system
    • 门控制系统
    • JPS598020A
    • 1984-01-17
    • JP11670382
    • 1982-07-07
    • Hitachi Ltd
    • HATA TOSHIOSUZUKI MASAYOSHI
    • G05B17/00G05D9/12
    • G05D9/12
    • PURPOSE:To avoid an error discharge and to improve both safety and reliability for automatic control of a gate, by checking previously whether the volume and level of reservoir water are in a range of allowable variation at a target opening amount. CONSTITUTION:A target opening amount TP is obtained by carrying out a process PAB with an opening amount A and a water level B. Then the level TH and volume TV of the reservoir water obtained with the amount TP are obtained from a process PTH or PTV. A gate is controlled with the amout TP only when both TH and TV are within a prescribed range epsilon.
    • 目的:为了避免错误排放,并提高门的自动控制的安全性和可靠性,通过先前检查储层水的体积和水位是否在目标开放量的允许变化范围内。 构成:通过执行开口量A和水位B的处理PAB来获得目标开度TP。然后,从处理PTH或PTV获得用TP量获得的储水器的水位TH和体积TV 。 只有当TH和TV都在规定的范围内时,门才能被控制。