JP2001289598A - Electronic fuse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive the reduction of a prime cost and development cost, the enhancement of reliability, and the lightening of burden in management, by providing an electronic fuse which is standardized to cope with a plurality of kinds of missiles. SOLUTION: This fuse is equipped with a voltage comparing circuit (19), a voltage application time clocking circuit (20), a safety dissolution and initiating output control circuit (24), and an output voltage control circuit (23) which are free of setting change, according to the types of machines where they are to be mounted. This is further equipped with an interface part (35) which receives a fuse program signal from an external input/output device (30), and ROMs (14 and 15) which store operation programs and operation parameters contained in that signal. A microprocessor (16) performs the setting change the above hardware circuits (19, 20, 23, and 24) so that they may not only execute the safety release control or the initiation control by software, but also execute the safety release control or the initiation control, based on the operation programs and operation parameters concerned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuze mounted on a flying object, and more particularly to an electronic fuze having an electronic circuit.

[0002]

2. Description of the Related Art Conventionally, a flying object such as a guided flying object is equipped with a fuse for releasing the safety of the flying object or detonating the flying object. With the development of electronic technology in recent years, a so-called electronic fuse, which has an electronic circuit and performs safety release processing or detonation processing according to a predetermined operation program, has been used as such a fuse.

[0003] Since the fuse requires a high degree of reliability,
It is not preferable to perform all the detonation processing by software processing. Therefore, conventionally, in order to ensure reliability, a redundant design in which software processing and hardware processing are used in combination or software processing and hardware processing are performed in parallel is often performed. Therefore, a hardware circuit such as a comparison circuit is incorporated in the electronic fuse.

There are a plurality of types of flying objects having different speeds and flight distances. Therefore, conventionally, a plurality of fuses having different safety release conditions and detonation conditions are prepared according to the characteristics of various flying objects, and different fuses are mounted for each flying object.

[0005]

However, in the conventional method in which the fuze is used for each type of flying object, the hardware characteristics of the fuze are specific to a specific flying object.
Hardware circuits with different configurations had to be manufactured for each type of flying object. For this reason, there is a limit in sharing parts and development processes, and it has been difficult to reduce costs and manufacturing costs. In addition, it was difficult to reuse the actual product because the fuse had to be redesigned every time the type of the flying object was changed. For this reason, it was difficult to improve reliability by diverting actual products. Furthermore, the burden was great in terms of model management.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electronic fuse which is standardized so as to correspond to a plurality of types of flying objects, thereby reducing cost and cost. The purpose is to reduce development costs, improve reliability, and reduce management burden.

[0007]

In order to achieve the above object, the present invention aims to standardize the control means by providing a control means capable of changing settings, while using an external input / output device to control the type of the mounted model. The setting of the control means is changed in accordance with.

Specifically, the electronic fuze according to the present invention comprises:
An electronic fuze mounted on a flying object, configured to execute safety release or detonation control, and a control means (40) capable of freely changing settings according to the type of the mounted flying object
Connected to the external input / output device (30).
(30) Interface means (35) for receiving a predetermined signal according to the type of flying object, and setting change means (38) for changing the setting of the control means (40) based on the signal It is what you have decided.

According to the above, by transmitting a signal corresponding to the type of the flying object from the external input / output device (30), the setting of the control means (40) is changed according to the mounted model. Thereby, the control means (40) executes the safety release control or the detonation control according to the mounted model. Therefore, the control means (40) can be applied to any type of flying object, and can reduce the cost cost, the development cost, the reliability, and the management burden by standardization.

The electronic fuse further includes a flying state detecting means (18) for detecting a flying state of the flying object, and a voltage supply for supplying a voltage for releasing safety or a voltage for detonating the primer (34). Means (36), wherein the control means (40) drives the voltage supply means (36) when the flying state of the flying object satisfies a predetermined safety release condition or a detonation condition, while the setting change means ( 38) may be configured to change the safety release condition or the detonation condition based on a signal from the external input / output device (30).

According to the above items, the safety release condition or the detonation condition is changed according to the type of the mounted flying object,
The safety release control or the detonation control according to the mounted model is executed.

The control means (40) preferably includes a hardware circuit (19, 20, 23, 24) whose setting can be changed.

Further, the control means (40) includes a control circuit (19, 20) for executing a predetermined process based on a determination result regarding a predetermined operation parameter, and a control circuit (19) based on a predetermined operation program. , 20), and the control circuit (19, 20) is formed by a hardware circuit capable of freely changing the setting of the judgment reference value, and is provided from an external input / output device (30). The determination reference value may be configured to be changed based on the above signal.

According to the above-mentioned matter, not only software but also hardware is changed for each model. Therefore, hardware can be standardized. In addition, the reliability is improved by using the hardware circuit as described above. Therefore, the fuse can be standardized in a highly reliable configuration.

The setting change means (38) is an external input / output device.
It is preferable to include storage means (14, 15) for storing one or both of the operation program and the operation parameter given from (30).

According to the above, one or both of the operation program and the operation parameter transmitted from the external input / output device are stored in the storage means, and the setting is changed based on the operation program or the operation parameter. .

The interface means (35) is formed so as to freely transmit and receive signals to and from the external input / output device (30).
When the reception of the signal from the external input / output device (30) ends normally, a confirmation signal indicating that the reception has been normally performed is returned to the external input / output device (30). Is preferred.

According to the above, it can be easily determined that the signal from the external input / output device has been normally transmitted based on the presence or absence of the confirmation signal, and the subsequent processing can proceed smoothly.

[0019]

As described above, according to the present invention, by transmitting a signal from an external input / output device, the setting of the control means is changed in accordance with the type of the mounted device. The means can be changed afterwards to a unique configuration according to the mounted model. Therefore, it can be mounted on an arbitrary type of flying object, and cost reduction, development cost, reliability improvement and management burden can be reduced by standardization.

By forming a part of the control means by a hardware circuit, hardware can be standardized and reliability can be improved. Therefore,
In a highly reliable configuration, the benefits of standardization can be enjoyed.

The provision of the storage means for storing one or both of the operation program and the operation parameter given from the external input / output device makes it possible to easily change the setting.

By returning a confirmation signal indicating that the signal from the external input / output device has been normally received to the external input / output device, it is easy to confirm that the signal has been normally transmitted. It is possible to make a determination, and subsequent processing can proceed smoothly.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

—Fuse Configuration— The fuze (1) according to the present embodiment is an electronic fuze mounted on a flying object and detonating the flying object body based on predetermined conditions. As shown in FIGS. 1 (a) and (b), the fuze (1)
Electronic circuit (7) inside a sealed cylindrical metal housing (2)
Is provided. The electronic circuit (7) is formed by mounting a plurality of electronic components on an electronic circuit board (5). The electronic circuit board (5) is fixed inside the metal housing (2) by the spacer (6). Metal housing
On the wall of (2), a connector (11) for connecting an external input / output device (30) (see FIG. 2) and an electronic circuit (7), an external power supply (32) (see FIG. 2) and an electronic A power supply terminal (21) for connecting to the circuit (7) is provided.

As shown in FIG. 2, the electronic circuit (7) includes an interface unit (35), a setting change unit (38), a safety release and detonation execution unit (36), and a control unit (40). Have.

The interface section (35) is a section for transmitting and receiving signals to and from the external input / output device (30).
Connector connected to external input / output device (30) via (31)
(11) and a communication unit having a driver circuit and a receiver circuit
(12) and a transmission data processing unit having a data processing RAM
(13). As the external input / output device (30), not only a dedicated input / output device designed for the fuze (1) but also a general-purpose computer such as a personal computer can be used. The interface unit (35) may be a special interface designed for the fuze (1), or may use a general-purpose interface such as RS-232C.

The setting change unit (38) includes a flash memory,
An operation program ROM (15) composed of a programmable non-volatile memory such as a PROM or an EEPROM and an operation parameter setting ROM (14) are provided. The operation program ROM (15) is configured to store an operation program corresponding to the type of the mounted flying object, and the operation parameter setting ROM (14) is configured to store various operation programs corresponding to the type of the mounted flying object. It is configured to store a reference value or the like of an operation parameter.

The safety release and detonation execution unit (36) includes a power supply terminal (2) connected to an external power supply (32) via a power supply cable (33).
1), a power supply circuit (22), a first switch (25) for turning ON / OFF a voltage supply from the power supply circuit (22), a charging voltage generating circuit (26), and a charging voltage generating circuit (26). And a second switch (28) for turning on / off the discharging of the charging circuit (27). Charge voltage generation circuit
(26) is a circuit having a property that the output voltage value is determined by the input voltage value (so-called function property), and the input voltage value is set by an output voltage control circuit (23) described later.

The control unit (40) includes a microprocessor (16) having a RAM for data processing, a voltage comparison circuit (19) formed by a hardware circuit whose setting can be changed, a voltage application time measurement circuit (20), Safety release and detonation output control circuit (2
4) and an output voltage control circuit (23). The output voltage control circuit (23) is configured to switch the charging voltage value according to the type of the flying object. The safety release and detonation output control circuit (24) turns on the first and second switches (25, 28).
/ OFF control is performed. The output voltage control circuit (23) has a mechanical relay, a semiconductor relay, a semiconductor analog switch, or the like.

The fuze (1) is provided with an acceleration detector (18) for detecting the flying state of the flying object. Between the acceleration detector (18) and the microprocessor (16),
An A / D converter (17) is provided.

Operation of Fuze Next, the operation of the fuse (1) will be described. In the fuze (1), an external input / output device (30) is used to perform a storage operation for storing an operation program and a reference value of an operation parameter in the electronic circuit (7) according to the type of the mounted flying object in advance. . Then, after launching the flying object, the safety release and detonation operations are executed based on such an operation program and operation parameters.

In the present embodiment, safety release and detonation are executed based on the acceleration detected by the acceleration detector (18).
The reference acceleration for that purpose differs depending on the type of flying object. The charging voltage value required for the charging circuit (27) also varies depending on the type of the flying object. Therefore, the reference value of acceleration in the safety release determination and the detonation determination (more specifically,
The voltage value and output time of the D-converted acceleration detector signal) and the charging voltage value correspond to the operation parameters referred to herein.

First, the storage operation will be described with reference to FIGS. First, connect one end of the signal cable (31) to the external input / output device (30), and connect the other end to a connector.
Connect to (11). Then, as shown in step ST1, the power of the fuse (1) and the external input / output device (30) is turned on.

Next, as shown in step ST2, the program transmission software of the external input / output device (30) is activated. In addition, this program transmission software uses a fuze from a plurality of operation programs and operation parameters stored in advance.
An operation program and operation parameters corresponding to the type of the flying object on which (1) is mounted are selected, and these operation programs and operation parameters are transmitted to the electronic circuit (7). By the activation of the program transmission software, a fuze program signal for each model including operation program and operation parameter information corresponding to the installed model is transmitted from the external input / output device (30) to the electronic circuit (7). Will be.

Then, as shown in step ST3, the fuse program signal is input to the transmission data processing unit (13) via the communication unit (12). And a transmission data processing unit
According to (13), the operation program is the operation program ROM
(15), and the operating parameters and their reference values are written to the operating parameter setting ROM (14).

When the above-mentioned writing operation is completed, as shown in step ST4, the external input / output device (30) sends a fuze program signal to each of the ROM (1) to the transmission data processing section (13).
In order to confirm whether or not the data has been normally stored in (4, 15), a write result data is requested. Then, step ST5
As shown in (5), the transmission data processing unit (13) returns write result data to the external input / output device (30) in response to the request. Specifically, when a write operation is performed normally, a normal mode signal (confirmation signal) is returned,
If the write operation is not performed normally, an abnormal mode signal is returned. This write result data is displayed on the display unit of the external input / output device (30). As a result, it is possible to quickly and accurately recognize whether or not the writing operation has been normally performed, so that the subsequent processing can be smoothly performed.

Then, as shown in step ST6, after confirming that the write operation has been performed normally, the storage operation is terminated.

When the storage operation is completed, the microprocessor (16) changes the setting of each hardware circuit (19, 20, 23, 24) according to the mounted model based on the fuse program signal. That is, the circuit configuration of each hardware circuit (19, 20, 23, 24) is constructed in a form according to the type of the flying object. For example, in the voltage comparison circuit (19), a resistance value is changed by switching a switch element (not shown) or the like, and a reference voltage value as a reference for comparison is changed. By such a circuit construction, each hardware circuit (19, 20, 23,
24) is a unique hardware circuit corresponding to the flying object to be mounted.

Next, the safety release and detonation operations will be described. As shown in FIG. 4, when the power of the fuse (1) is turned on in step ST11, the hardware processing shown in step ST12 and the software processing shown in step ST13 are executed, and the control of safety release and detonation is executed. Is done.

Specifically, first, when the flying object is fired, a large acceleration is applied to the flying object, so that the output voltage V of the acceleration detector (18) increases. The output voltage V of the acceleration detector (18) is set to a reference voltage V1 set for each model.
Then, a signal is transmitted to the voltage application time measurement circuit (20). The voltage application time measurement circuit (20) has an acceleration detector (1
8) The elapsed time t in which the output voltage V is equal to or higher than the reference voltage V1 is measured, and when the elapsed time t is equal to or longer than a predetermined time t1 set for each model, the safety release and detonation output control circuit (24) ) To send a safety release signal. The reason why the elapsed time is considered in this way is that the output voltage V occasionally exceeds the reference voltage V1 due to noise or the like, and the output voltage V instantaneously exceeds the reference voltage V1. If the safety release signal is transmitted immediately afterwards, a malfunction may occur.

When receiving the safety release signal, the safety release and detonation output control circuit (24) turns on the first switch (25). As a result, the charging voltage generation circuit (2
A voltage is applied to 6), the charging voltage generation circuit (26) generates a predetermined voltage, and the charging circuit (27) is charged.

Thereafter, when the flying object lands on the target, a large inverse G is applied to the flying object (that is, the flying object is rapidly decelerated), so that the output voltage V of the acceleration detector (18) decreases. When the output voltage V of the acceleration detector (18) falls below the reference voltage V2 set for each model, a signal is transmitted to the voltage application time measurement circuit (20). Voltage application time measurement circuit
(20) indicates that the output voltage V of the acceleration detector (18) is equal to the reference voltage V2.
The elapsed time t in the following state is measured, and when the elapsed time t becomes equal to or longer than the predetermined time t2, an initiation signal is transmitted to the safety release and activation output control circuit (24).

When receiving the initiation signal, the safety release / explosion output control circuit (24) turns on the second switch (28). Thereby, electric power is supplied from the charging circuit (27) to the primer (34).

-Effects of the Embodiment- As described above, the fuze (1) is hardened according to the type of the flying object mounted on the basis of the fuze program signal supplied from the external input / output device (30). Wear circuit (19, 20, 23, 24)
Is changed, it is possible to execute safety release and detonation of any flying object. Therefore, it can be mounted on a plurality of types of flying objects. This eliminates the need to design and manufacture a fuze for each type of flying object, and makes it possible to realize a common fuze. Therefore, the cost can be reduced by using common parts, and the number of development steps can be reduced. Further, since a proven product mounted on a specific flying object and having sufficient reliability can be diverted to another flying object, the reliability can be improved by diverting the proven product. Further, since it is not necessary to sort the fuses for each model, it is possible to reduce the burden of model management and the management cost.

-Modifications- In the above-described embodiment, the acceleration and the charging voltage value serving as references for safety release and detonation are used as operation parameters, but the operation parameters are not limited to these. For example, self-destruct when the flight distance or flight time exceeds a predetermined reference distance or time. The reference parameter or reference time in, the reference time (detonation delay time) when the detonation starts after a predetermined reference time has elapsed since the flying object reached the target, and the like may be used as the operation parameters.

These circuits may be omitted by substituting the processing of the driver circuit and the receiver circuit of the communication section (12) by software processing in the transmission data processing section (13).

Further, the processing of the transmission data may be performed by the microprocessor (16), and the transmission data processing section (13) may be omitted.

By storing the operating parameters in the operating program ROM (15) in addition to the operating program, the operating parameter setting ROM (14) may be omitted.

The microprocessor (16) and the operation program ROM (15) may be independent of each other in configuration.
It may be incorporated in one IC package. A microcomputer or a DSP may be used.

The first and second switches (25, 28) may be tangible switches such as mechanical switches and semiconductor relays, or may be intangible switches on software.

The voltage comparison circuit (19) may set the reference voltage value by appropriately switching a plurality of resistors by a switch element, and may use a microprocessor and a D / A converter or the like to set the reference voltage value. A value may be set.

The voltage application time measuring circuit (20) may measure an elapsed time by a built-in timer of a microprocessor, and may use a resistor of a time constant circuit (a timer IC or the like may be used). Set the time constant CR of capacitors and resistors by switching, VCO (Voltage
Control Oscillater) A voltage controlled oscillator circuit using an IC or the like and a clock frequency changed by a programmable oscillator, ISP (In-System Programming)
A device using a programmable logic device having a function may be used.

The output voltage control circuit (23) appropriately switches a plurality of semiconductor components such as fixed resistors and diodes having different resistance values using relays (mechanical relays, semiconductor relays, etc.), analog switches and the like. It may be. Further, a plurality of power supply circuits corresponding to each model may be provided, and these power supply circuits may be switched by a relay, an analog switch, or the like.

The measurement of the detonation delay time may use a built-in timer of the microprocessor, or may use the same means as the voltage application time measurement circuit (20).

Writing of the fuze program (operation program and operation parameters) may be performed at the time of manufacture of the fuze, or may be performed at the time of shipment or mounting of a flying object.

In the above embodiment, the setting change according to the model is performed for both the safety release control and the detonation control. However, it is needless to say that the setting change according to the model may be performed only with respect to the safety release control, or may be performed only with respect to the detonation control.

[Brief description of the drawings]

FIG. 1A is a perspective view of an electronic fuse, and FIG. 1B is a cross-sectional view showing an internal configuration of the electronic fuse.

FIG. 2 is a block diagram showing a configuration of an electronic fuse.

FIG. 3 is a flowchart of a storage operation.

FIG. 4 is a flowchart of a safety release and detonation operation.

[Explanation of symbols]

 (1) Electronic fuze (5) Electronic circuit board (6) Spacer (7) Electronic circuit (11) Connector (16) Microprocessor (main control unit) (18) Acceleration detector (flying state detection means) (30) External input / output device (36) Safety release and detonation execution part (voltage supply means) (38) Setting change part (setting change means) (40) Control part (control means)

Claims (6)

[Claims] An electronic fuze mounted on a flying object, wherein the control means is configured to execute safety release or detonation control, and is capable of freely changing settings according to the type of the mounted flying object. 40) and an external input / output device (30) connected to the external input / output device (30).
An electronic system comprising: an interface means (35) for receiving a predetermined signal corresponding to the type of the flying object from the apparatus; and a setting change means (38) for changing a setting of the control means (40) based on the signal. fuse. 2. An electronic fuze according to claim 1, wherein: a flying state detecting means for detecting a flying state of the flying object; and a voltage for releasing safety or a voltage for detonating a primer. The control means (40) is provided when the flying state of the flying object satisfies a predetermined safety release condition or a detonation condition.
And an electronic fuse that is configured to change the safety release condition or the detonation condition based on a signal from an external input / output device (30). 3. The electronic fuze according to claim 1, wherein said control means (40) is a hardware circuit whose setting can be changed.
Electronic fuse with (19,20,23,24). 4. The electronic fuze according to claim 1, wherein said control means (40) executes a predetermined process based on a result of determination on a predetermined operation parameter.
0) and the control circuit (19,
20), and the control circuit (19, 20) is formed by a hardware circuit capable of freely changing the setting of the determination reference value, and includes an external input / output device.
An electronic fuze, wherein the criterion value is changed based on the signal from (30). 5. The electronic fuse according to claim 4, wherein the setting change means stores one or both of an operation program and an operation parameter given from an external input / output device. An electronic fuse including storage means (14, 15). 6. The electronic fuze according to claim 1, wherein the interface means (35) comprises the external input / output device.
The transmission / reception of the signal with the external input / output device (30) is freely formed, and when the reception of the signal from the external input / output device (30) ends normally, a confirmation signal indicating that the reception has been normally performed is output to the external input / output device. An electronic fuze configured to return to the output device (30).